CA2043432A1 - Device for the centralised control of the opening points of a motor vehicle - Google Patents
Device for the centralised control of the opening points of a motor vehicleInfo
- Publication number
- CA2043432A1 CA2043432A1 CA002043432A CA2043432A CA2043432A1 CA 2043432 A1 CA2043432 A1 CA 2043432A1 CA 002043432 A CA002043432 A CA 002043432A CA 2043432 A CA2043432 A CA 2043432A CA 2043432 A1 CA2043432 A1 CA 2043432A1
- Authority
- CA
- Canada
- Prior art keywords
- conductors
- conductor
- motor
- opening points
- control unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B77/00—Vehicle locks characterised by special functions or purposes
- E05B77/22—Functions related to actuation of locks from the passenger compartment of the vehicle
- E05B77/24—Functions related to actuation of locks from the passenger compartment of the vehicle preventing use of an inner door handle, sill button, lock knob or the like
- E05B77/28—Functions related to actuation of locks from the passenger compartment of the vehicle preventing use of an inner door handle, sill button, lock knob or the like for anti-theft purposes, e.g. double-locking or super-locking
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/54—Electrical circuits
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/02—Power-actuated vehicle locks characterised by the type of actuators used
- E05B81/04—Electrical
- E05B81/06—Electrical using rotary motors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T70/00—Locks
- Y10T70/50—Special application
- Y10T70/5889—For automotive vehicles
- Y10T70/5973—Remote control
- Y10T70/5978—With switch
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T70/00—Locks
- Y10T70/60—Systems
- Y10T70/625—Operation and control
- Y10T70/65—Central control
Abstract
Device for the centralised control of the opening points of a motor vehicle ABSTRACT
The invention relates to a device for the centra-lised control of the opening points of a motor vehicle, in which the opening points have a triple-effect elec-trical actuator, including two locking states, and comprising at least one electric motor, and some opening points have a mechanically controled device with a lock key sending commands to a central control unit which also receives command coming particularly from the ignition key and/or from a remote-control set and from an anti-attack button.
The device according to the invention is charac-terised in that the central control unit is connected to each of the opening points by means of a single line (8) with three conductors (31, 32, 33) which will be used sometimes for power transfer and sometimes for inform-ation transfer, in that in each opening point the actuator is connected permanently between the three conductors of the said line (8), and in that the central control unit comprises means (20, 26) for selectively applying to each of the said conductors (31, 32, 33) the voltages necessary for the execution of a sequence.
The invention relates to a device for the centra-lised control of the opening points of a motor vehicle, in which the opening points have a triple-effect elec-trical actuator, including two locking states, and comprising at least one electric motor, and some opening points have a mechanically controled device with a lock key sending commands to a central control unit which also receives command coming particularly from the ignition key and/or from a remote-control set and from an anti-attack button.
The device according to the invention is charac-terised in that the central control unit is connected to each of the opening points by means of a single line (8) with three conductors (31, 32, 33) which will be used sometimes for power transfer and sometimes for inform-ation transfer, in that in each opening point the actuator is connected permanently between the three conductors of the said line (8), and in that the central control unit comprises means (20, 26) for selectively applying to each of the said conductors (31, 32, 33) the voltages necessary for the execution of a sequence.
Description
~43~32 The present invention relate~ to a device or the centralised con~rol of the opening points of a motor vehicle. It i5 intended for controlling the door locks, the ~n~ and other protected-access de~ice~, such as the petrol flap, the glove box, etc.
The control of tha locking or unlocking of these various opening points or acce~se~ is centralised, that is to say it can be controlled by the actuation of the key in the lock of one of the front doors or o~ the boot, by remote control or by an anti-attack button.
The door lock~ have two locking tates, namely a fix~t "secure" ~tate, in which the door is locked, and a second "super secure" 9tate which corresponds to a locking moda in which the lock is unpickable and can be ~nly ~lec~rio~lyunlocked.
In sy3tems with a centrali~ed control, the action o~ the key in the lock of one of the front door~ gener-ates elac~rical ~ignal~ which are transmitted to a cantral control unit which sends a ~'secure" or "de~ecure"
command to all the opening points or protectQd acces~es.
Thi~ central control unit can also receive a ~secure~ or ~desecure~ signal transmitted by a remote command made from ou~side the vehicle or by an anti-attack button.
Moreover, in motor vehicles there is generally an alarm device warning the driver that one of the protected acce~es i9 improperly closed and visually designating the acce~3 which i9 improperly closed. The in~ication of Lmpropar clo~ure is provided by a contactor which i8 most often located in the lock and is called an O.D.C:. or open-door contactor.
A~ a result of this, to perform all these function~ it i9 necessa~y to connect a large number of conductor~ to each protected access; this number can rise to eight for a front door having a "super secure" system.
Now the operation of electrically wiring of a motor-vehicle opening point is difficult and remains exp~nsive.
The ob~ect of the invention L~, therefore, to provide a device for tha centralised control o f tha 2~L3432 openlng points of a motor vehicle, which makss it pos~ible -to oonsiderably xeduce the nu~ber of conductor~
necessary for the conn~ction between the opening point.
and the cen~ral control unit.
The sub~ect of the inven~ion i9 a device for the centralised control of the opsning points of a motor vehicle, in which the opening points ha~e a double- or triple-effect electrical actuator comprising at least one alectric motor, and som~ opening points have a mechani-cally controled device with a lock key sending commands to a central control unit which also receives co~mands coming particularly from the ignition key and/or ~rom a remote control set and/or from an an~i-at~ack button, characterised in that the central cvntrol unit i5 con-nected to each of the opening points by means of a single line with three conductors used sometLmes for power transfer and sometimes for information tran fe.r, in that in each opening poin~ tha ac~uator is connectecl per-manently be~ween two or three conductors of the said line, and in that the central control unit ccmprises means for selectively applying to each o~ the said conductor~ the voltage~ neces3a~y for the execution of a sequence.
According to another characteristic of the inventionr in the opening point having a mechanical control with a lock key, a series of passive electronic voltage-levQl setting components is connected between two conductors contactlessly in the position of re~t.
Any "secure" or ~desecurQI~ command by the key de~ines a position of the said key which close~ the circuit by means of one or more of the abovementioned components and the two conductoxs, one bia~ed at the positive voltage of the source by maans of a re~istor and the other connected to earth.The central unit comprise.s a detector of the level of vol~age tapped at the terminal of the re istor ad~acent to the componentst this detector supplies control signals to the means for applying to the thre~ conduc~ors the polaritie~ corresponding to tha reguest.
~3~32 The invention will be better understood from the ~ollowing description given purely by way of example and msde with reference to the accompanying drawings ln whicho ~ Fig~re ~ ~g a ~l~c~ dia~am o an em~od~ment o~
the inverltion;
- Figure 2 is a diagram of the circuit located in a ~r~nt opening point;
- Figure 3 i~ a block diag:ram of the central control unit;
~ Figure~ 4 and 5 are de~ailed diagram~ of the central control unit;
- Figure 6 is a graph explaining Figur~ 5.
- Figure l is a gQneral block diagram o~ a d2vice according to ~hQ invention which comprises essen~ially a central contxol unit l intended ~or controlling the '~de~ecuring~', "securing" or "~uper ~ecuring" o~ opening point~, such a~ ~ront door~ 2, rear door~ 3 and a tail-gate 4. ~he central control unit can receivo command~
sent by the mechanism o the igni~ion kay 5, a remote-control raceiver 6 ox an anti-attack button.
The two front doors 2 are equipped with a key lock 7 which i~ itted with electrical contact~ ~upplying electrical signal~ to the central control unit 1 for the purpo~e of l~desecuring~ ecuring~ or "~uper securing~
the opening point~.
Th~ ~tructure of the variou~ element~ of thi~
diagram i~ such that the connection between the central unlt 1 and the variou~ opening points is made simply by means of a line 8 with three conductor~ 31, 32, 33 which form~ a kind of bus ~unction between the central co~trol unit 1 and the opening points, each of these :being connected in parallel to the line 8.
~igure 2 is an electrical diagram of the circuit contained in an opening point, such a~ a ~ront door. This circuit e~ entially comprise~ three conductor~ 11, 12, 13, each connected to one of the conductor~ of the line 8 (control by key can take place, for exa~ple, between 11 and 12).
_ 5 2~343~
Each opening point comprises a triple-efect electrical actuator, for example two direct-current motor M1 and N2; the motor Ml controls the "securing" or l~desecuringll of the opening point, and the motor M2 S control~ the "super securing~ or ~de~ecuring" of the lock. In the ~super secure~ po~ition, the door cannot be opened by u~ing the mechanical con~rol element~ of the door, namely a lever or pu~her, but only by an electrical control provided by the insertion of a coded key into the lock 7 or by a remote command received by the detector 6.
According to the invention, for each actuator, the motor~ M1 and M2 are connected permanently between the three conductor~ 11, 12 and 13. In the example illustrated, the motor ~1 is connected between the conductor 13 and the conductor 12. The ~econd motor M2 is likewise connected batween the conductor~ 13 and 12. On thiR conductor 12, a diode Dl separates t h e terminals of the motors Nl and M2, and the cathode of Dl is connectad to M2. Noreover, the terminal o~ M~ ~oined ~0 ~o the conductor 12 is ex~ended on the conductor 11 by a diode D2, the cathode of which is connected to thi~
conductor 11. The control takes place be~ween the conductor~ 11 and 12. From the conductor ll an a~sembly of thxee elec~ronic components is connected, in the illustrated example Zener diodes 14 connected in series.
Fro~ the anodes o~ ~he~e Zener diodes, three term:inal~
are defined for a switch.
The other conductor 12 is connected to the common terminal of a three-po~ition switch 15 by means of a d~ode 16, the cathode of which is connected to the conductor 12. ~he function of the diode 16 is to preven~
a power current from pas ing through the Zener diodes if a key request occurs during a power transfer for "super ecuring". Thi~ three-position switch consists, in fact, of the coded key inserted into the lock 7; the three pos~ible po~itions of the lock key 15 corresp~nd to ~ho three abovementioned states of "de~ecure~, "secure" and "super secure". Thi~ switch close~ a circuit via one or more Zener diode~ according to tha particular request.
2~3~
Finally, a re~onant circuit con~i~ting of a coil 17 and of a capacitor 18 is connected batween the two conductors 11 and 12, with the in~erpo~ition of a contact 19 which correspond~ to the open-door contactor O,D.C.
and which is closed when the door i~ open or Lmproperly closed.
Th~ electrical circuit integrated in ~he other opening point~, such as the rear door~ or the tail gate, does not include tha elements 14 to 16 corre~ponding to the key lock 7.
Figuxe 3 illustrate~ the circuit of ths cen~ral control unit in simplified form. The line 8 is connected ~o three inputs 21, 22 and 23 which corre~pond respectivaly to the conductor~ 11, 12 and 13 of each of the opening point~. Each of these input~ i~ connec~ed to the contact of a control relay, Bl, B2 and B3 resp~
ectively, these being shown in the ~tate of xe~t. The coils of the relay~ B1, B2 and B3 are controlled by a microprocessor 20, a~ will be descxibed in de~ail later.
In the state of re~t corresponding to the vehicle lef~
unattended, the terminal 23 corre~ponding to the conductor 33 o~ the line 8 and the terminal 22 corres-ponding to ~he conductor 32 of the line 8 are connec~ed to the negative terminal 24 of the ~ehicle'~ ~upply battary. When the relays B2 and B3 are energi~ed into the working position, the terminals 22 and 23 are connected to the po~itive terminal 25 of the vehicle battery.
When the relay Bl i~ energised, the terminal 21 corre~ponding to the conductor 31 of the line 8 is connected to the negative terminal 24 o~ the battery. In the po~ition of rest, the terminal 21 i8 connected to a measuring detector 26 which supplie~ information to the microproce ~or 20. Thi~ terminal 21 i~ biased at the positive voltage by a re~ tor 10 which is connected to the conductor 2} by means of the break contact 27 of th~
relay Bl and the make contact of a switch 30' controlled by the actuation of the ignition key.
Moreover, when the vehicle i~.being u~ed, with the ignition key in3erted, the break contact 27 of the , _ 7 ~ 3~32 relay Bl can al30 be connected to an alternating-current generator 28 either by means of trap circuits connected in serias or by means of a resistor, in which case the ~tring of trap circuit can be connected in parallel between 12 and 13 or omitted. Each of the~ trap circuit~
i~ tuned to th re~onant frequency of the re~onant circui~ 17, 18 of one of the opening point~. An alarm device, such a~ an indicator lamp 29t is connecte~ in parallel to each of the resonant circuits. This indicator lamp can consist, for example, of a light~emitting diode.
The putting into opera~ion of the genera or 28 i~
controlled by a signal occurring as a result o tha clo~ing of a contact 30 which is clos2d by the ignition key of the vehicle and which corresponds to the circuit 5 of Figure l.
The microprocessor 20 al90 receiYas from the contact 30 information on the insertion of the ignition key of the vehicle. It also receives information by mean~
o~ an anti-attack contact 34 which can be clo4ed by thQ
u3er when he i5 in the vehicle. Finally, the microproces~or 20 receive~ a ~secure~ super secuxe~ or "de~ecura" command provided by means of a contact 35 as~ociated with the remote-control detector 6.
Figure 4 i~ a detailed diagram representing the detector circuit 26. ~he signal coming from the mea~uring conductor 31 is cent to three operational amplifiers 41, 42 and 43 which, in addition, each receive a nominal value matched to the voltage~ of the Zener diodes 14.
In the example illustrated, these reference signal~ are respectivQly equal to 2, 4 and 6 volts. The signal supplied by the first operational amplifier 41 i3 sent to an AND ga~e 44 with three inputs, the other two inputs of which re~eive a positive voltage corresponding ~o th~ logical state 1. The output of the logical AND
gate 44 is sent to a monostable multivibrator 45, the output of which supplies a first command signal.
The output of the second operational amplifier is sent to a logic ~ND circuit 46 with three input~; the second input of thi~ circuit receives the output signal - 8 2~3~
ro~ the operational ampliier 43 and the third input of thi~ circuit receives the in~erted ou~pu~ signal from the compar~tor 41, the inver~ion being carried out hy an in~erting gate 47. The output of this logic AND circuit 46 controls a second monostable multivibrator 48, the output of which likewise supplies a command signal.
The output of the operational amplifier 43 i~
sant to a logical AND circuit 49 wit~h three inputs, the other two inpu~s of which receive re~pectively the lQ inverted output signal from ~he operational amplifier 41 and the invertad output signal from the operational amplifi0r 42 by means of an inverting gate 51. The output of the logical ~ND circuit 49 controls a third mono~table multivibrator 52, the output of which liXewi~e ~upplie~
a command signal.
Figure 5 is a diagram ~howing the ~enerator 28 in detail. It con~ist3 essentially of four multivib.rator~
61, 62, 63 and 64 which are connected in serie~ 50 a~ to con~titute a ring counter; Figure 6 is a timing diagram respectively representing clock signals sent to each of the multi~ibr~tors and their output Q.
The output signal Q o each of the multivibrators controls a transi~tor 65 which forms a swltch arranged between the diract voltage source and the feed wire of each periodic-signal ~enerator 71, 72, 73 and 74. The output of each of thes0 generators is sent to the conductor 36 of Figure 3 upst~m of the trap circuits.
The frequencies of the signals supplied by the generators 71 to 74 corre~pond respectively to thQ
resonan~ frequencies of each o~ ~he resonant-circuit assemblies 17, 18 of the gate circuit and corresponding trap circuit assembly of the central control unit.
The device which has ~u~t bean de~cribed operate~
as follows~ When ~he door key is inserted into the lock . 35 7, thi~ key can a~ume the three positions of the switch 15. ~he voltage of the Zener diode9 14 i~ selected so as ~o be slightly below the tri~ering thre~hold of the comparator~ 41 to 43; thus, if a ZenQr diode vol~age ~lightly below 2 volt~ elected, the tr~qgerin~ of the 2 ~ 4 3 A 3 2 g comparater~ 41, 42 and 43 will be obtained when only one of the Zener diode~ 14 i~ connected by ths ~witch 15, the tr~ri~g of the comparators 42 and 43 when two diode~ are c~nnectæd and the triggering of ~he compara~or 43 when the thre~ Zener diode~ 14 are connected by the switch 15.
In the absenc~ of a request by the key in the lock 7, the voltags read off by the detecto.r 26 i~ the battsry voltaga which is sent from ~he terminal 25 via the re~i~tor 10.
Since this voltage i~ higher than the maximum thre~hold of 6 V, none of the ~omparator~ 41 to 43 change~ from tha logical value ~0" to the logical value ~1". No command is sent to tha coil~ of the relay~ Bl, B2 and B3. If the key is in~erted into ~he lock 7 and LS
actuated in the "de~ecuring~ ~irection, the contac~
corre~pond~ to the connecting of the three Zener diode~
14 in serie~ and only the comparator 43 supplie~ a logical "1" at its output, thereby unblocking the log.ical AND gate 49 which change~ to 1 and aCtivat~the multi vibrator 52 which provides a command for activating the coil of the relay B2. The efect of this i~; to apply the po~i~ive supply voltage to the conductor 32 o the bundle 8 and con equently to the control line 12. The motor M1 and tha motor M2 by mean~ of the diode D1 are thu~ fed in the l'de3ecuring" direction in each of the doors con-trolled by the central control unit.
If the door key is actuated in the ~securing~
direction, there ara two po3itions, the first corre~pond-ing to the normal ~ecuring~ of the door~ and the second to "~uper securing". ~he~e two positions can be two successive pQsition~ of the~kQy or the second poC;ition can correspond to keeping the key in the "securing"
position for a given tLme.
If the door key is actuated in order to obtain ~'securing~', the position corresponding to two diodes 14 in s2rie~ is obtained and the two oomparator~ 4~ and 43 change to the logical state "l"; the inverter 51 block~
the AND gate 49 and only thQ gate 46 changes to ~he logicai ~tate "1", thereby acti~ating the multivibrator - lo 2~43~32 48 which control~ the supp~y to ths coil of th~ relay B30 The re~ul~ o thi~ i~ that the motor Ml i5 fed in the oppo~ite d~rection to the lldesecuring" direction. The motor M2 i~ not actuated because its two terminals are S connected to the same positive supply potential and Dl opposes the pa~sage of current towardR 32.
Finally, if the key change~ to the ~uper secure"
position, only the first Zener diode 14 is connected to the measuring circuit and the comparators 41, 42 and 43 change to the logical state "1". The output of the comparator 41 bloc~s the gates 46 and 49 by means of the inverting circuits 47 and 51.~The result of this i~ that only ths gate 44 i~ unblocked, thereby actuating the multivibrator 45 which controls the supply ~o the coil of the relays B1 and B3. In thi~ case, the po~itive voltage is applied to the conductor 13, the other conductor3 being connected to the negative terminal; the motor M1 is actuated in the ~securing~ direction and th~ motor M2 ls llkewise actuated in the "securingl' direction, tho combination con~ituting the ~Isuper secure" ~acility.
The diodes D1 and D2 make it possible to isolate or select M2 according to the polarities applied to the three conductors, this allowing it to be put at re~t in the event of a request for simply "securing" when Ml alona i~ activated.
. Should there be two simultaneous key requests, the lowe~t Zener diode voltag0 ha~ priority, thu~ det~r-mining priority in the event o two simultaneou~
diferent key requests. In the example given, the "super secure" reque~t corresponding to the lowe~t Zener diode volta~e ha~ priority over the other commands. The same i8 true of the "secure" command which has priority over a "desecure" command. This is a choice which can be changed as de~ired. TAis and protection~ on the mono~table multivibratoxs prevent the tran~mission of two different RLmultaneou~ commands.
The Zener diode~ 14 can be replaced by other electronic components dividing a voltage applied to the terminal3 of the two conductor~. It would be po~sible, 11 2~l~3~32 or example, to use three resistor~ of different value~
connseted in parallel be~ween the conductor 11 and the movabla contact of the switch 15, each resis tor forming a voltage divider bridge with the resistor 10, ~he free end~ of the resi~tors forming three contact stud~ of the switch.
The microprocessor 20 can also be controlled by the remote control represented diagr~mmatically by the contact 35 which supplies ~desecuring~ or "securing"
information to the microprocessor 20.
The device according to the invention also comprises an anti-attack device rep esen~ed d~agram-matically by the contact 34 which is actuated by the occupant of the vehicle when he i~ inside this and which likewise transmits ~securing~ command information to the microprocessox 20.
The microprocessor 20 also receive~ inormation relating to the ignition key of the vehicle (contact 30).
The information provided as a re~ult of the actuation o the ignition key of the ~Jahicle allows the actuation of the anti-attack de~ice and inhibits the remote control.
Furthermore, the actua~ion of the ignition key of the vehicle command~ the monitoring procedure of the door contacts by acti~ating ths generator 28 which therefore operata3 only when the ignition key is in the active position. This position cancel~ the positive direct voltage applied to the control conductor 21 which is thu~
sub~ected to the periodic signals supplied by the gener-ator 2 8 .
Should a door "securing" or "desecuringl' command be tran~mitted during this monitoring as a result of the actuation of the anti-attack device, the monitoring i5 intarrupted for a brief moment by the microproce3~0r 2 for the purpose of execute the command.
The monitoring of the ~tate of closure of the doors is carried out by using two conductors only, namely the conductor~ 31 32, A~ can be seen by referring to Figure~ 5 and 6, the generator supplie~ a train of pulse~ of different 12 _ 2~3~
fre~uQncies which corre~pond respectively to the resonant frequ0ncie~ of the resonant-circuit/trap-circuit pairs of tha cen~ral control unit and of each door.
I~ one of the door contart~ 19 is clo3ed, tha current circulate~ via the two conductors ll and 12, thera i~ a drop of Lmpedance of the resonant circuit to the resonant freguency of the door in que~tion, and the re~ult of thi~ i~ that the voltage at ~he terminal~ o~
the corresponding trap circuit of the central control unit assumes a higher value, thereby actuating the alarm consi~ting, for example, of the indic:ator lamp 29 which flash~s at the cyclic frequency of the generator 28.
Accordin~ to another ~mxxL~t of the ~tion, the generator 28 supplies a complex voltage comprising a plurali~y of equal voltage~, the frequencie5 of which correspond to the frequencie~ of the resonant circuit~.
In this case, a summing circuit can be u3ed to ssnd all the fraquencie~ along the conductor 11. In this CaBe, the ~our ~ignal ganerators ars supplied con~inuously and the rlng counter i~ no longer u~ed.
I~ can ba seQn that, when the vehicla is at a stand~till (no ignition contact made), a positi~e voltage is applied to the control conductor ll, 21, 31 and that, even if a door i~ improperly clo~ed, with a contact 19 ~5 closed, no current will circulate in the two control conductor~ ll and 12 because the capacitor of the reson-ant circuit o~ the Lmproperly closed door forms a direct-current switch.
According to anothsr ~xxlnent of ~he invention,.a single-frequency generator is provided in the central control unit only, and in each door the series resonant circuit i~ replaced by a vibrator operating at the frequency supplied by the generator of the central control unit.
~hi~ emxX~n~t makes it possible to limit t h e space ~red on the dashboard ~y nu~nus ~nd~cator lamps.
However, a single indicator lamp constituting a permanent alarm can be provided, whilst the operation of tha vibrator i8 delayed and the ~ound signal cease~ after a - 13 2~ 3~
particular time.
To prevent current con~umption when ignition contact i~ not made and a po~itive direct ~oltage i9 sent along tha fir~t control conductor 11J a capacitor can be arranged in sarie~ with each of the vibrator~. Since the indicator of an improperly closed door is in the door itself, the a~tention of the occupants i9 gained much more quickly, above all where rear doors are concerned.
According to ano~her embod~nt of the invention the trap circuits are omitted and the generator 28 permanently sends periodic wave trains o~ different frequenciq~ cyclically. These ~ignals pass through a re~istor arranged in series with the generator 28 i.n the central unit. To~ether with the impedance of the re~onant circuits, thîs re~i~tor performs the function of a voltage divider bridge: the amplitude vf each of the signal~ pa~sing through it i~ seen at it~ ter~inal ad~acent to the conductor 21. In the ab~ence of an impxoperly closed door, tha amplitude of the signal at the abovementioned terminal is that of the sign~l trans-mitted by the generator Z8. From the moment when a door contact l9 clo~e~, thi~ amplitude fall~ in the manner of a voltage divider bridge for the signal to the resonant frequency of the improperly closed door. An ala.rm is triggered a~ ~oon a~ thiq variation in voltage amplitude i~ detected. Since an~ signal at a given frequency i~
transmitted pariodically for a ~ period as a result of the ~pply o~ the sy3tem by the ring counter tsee Fig.
5)~ in the event of a voltage drop it is known exactly which door i8 involved since a door is sen~itive to its natural frequency and not to the other freque.ncies transmitted for the other door~ during tha remaining 3/4 of the period. The period is divided into a~ many portion~ as there are doors to be monitored (4 herQ in 3 5 tha example given ) .
According to another en~li~t of the mv~ntion, it is also possible to arrange the series of trap circuits in parallel between the two conductor~ 21 and 2 2 in the central unit, that iq to say between the output 36 of the :
~3~3~
_ 14 -generator connectPd to the conductor 21 and the negative polari~y of the battery connected to the conductor 22.
The generator 28 permanently send~ ~he periodic wave tr~ins at the various frequencie~ cyclically via a resistor. When its natural frequency i~ received, each ~rap circuit has a high Lmpedance. As soon as the door contact 19 of the coxresponding resonant circuit is closed, the Lmpedance at the terminaLs of the said trap circuit fall~, and the same i9 true of the voltage a~ it~
terminals. An alarm i5 triggered a~ soon as this voltage drop is detected.
It san be een that the inven~ion, using only three junction conductors forming a bu~ between the central control unit and each of the opening point~, make~ it po~sible to control in a centrali~ed manner the opening, "3ecuring" and even "super securing" of tha door~ and to send from each of the doors the necles~ary commands pro~ided b~ the door key.
Another advantage of ~he invention is that only passive elemen~s are accommodated in the door~, thi~
bein~ important from the point of view o~ cost and reliabllity.
Moreover, two of these conductors are sufficient to carry out the monitoring of the state of closure o~
all the opening points, with the improperly closed door being indicated each time.
~ he invention also applies to opening points compri~ing a double-effect actuator, such as opening point~ without "super ~ecuring" tluggage boot~ petrol flap etc.). In this ca~e, i the actuator i9 a reversibla motor, it will ~e connected permanently between two conductor~.
The control of tha locking or unlocking of these various opening points or acce~se~ is centralised, that is to say it can be controlled by the actuation of the key in the lock of one of the front doors or o~ the boot, by remote control or by an anti-attack button.
The door lock~ have two locking tates, namely a fix~t "secure" ~tate, in which the door is locked, and a second "super secure" 9tate which corresponds to a locking moda in which the lock is unpickable and can be ~nly ~lec~rio~lyunlocked.
In sy3tems with a centrali~ed control, the action o~ the key in the lock of one of the front door~ gener-ates elac~rical ~ignal~ which are transmitted to a cantral control unit which sends a ~'secure" or "de~ecure"
command to all the opening points or protectQd acces~es.
Thi~ central control unit can also receive a ~secure~ or ~desecure~ signal transmitted by a remote command made from ou~side the vehicle or by an anti-attack button.
Moreover, in motor vehicles there is generally an alarm device warning the driver that one of the protected acce~es i9 improperly closed and visually designating the acce~3 which i9 improperly closed. The in~ication of Lmpropar clo~ure is provided by a contactor which i8 most often located in the lock and is called an O.D.C:. or open-door contactor.
A~ a result of this, to perform all these function~ it i9 necessa~y to connect a large number of conductor~ to each protected access; this number can rise to eight for a front door having a "super secure" system.
Now the operation of electrically wiring of a motor-vehicle opening point is difficult and remains exp~nsive.
The ob~ect of the invention L~, therefore, to provide a device for tha centralised control o f tha 2~L3432 openlng points of a motor vehicle, which makss it pos~ible -to oonsiderably xeduce the nu~ber of conductor~
necessary for the conn~ction between the opening point.
and the cen~ral control unit.
The sub~ect of the inven~ion i9 a device for the centralised control of the opsning points of a motor vehicle, in which the opening points ha~e a double- or triple-effect electrical actuator comprising at least one alectric motor, and som~ opening points have a mechani-cally controled device with a lock key sending commands to a central control unit which also receives co~mands coming particularly from the ignition key and/or ~rom a remote control set and/or from an an~i-at~ack button, characterised in that the central cvntrol unit i5 con-nected to each of the opening points by means of a single line with three conductors used sometLmes for power transfer and sometimes for information tran fe.r, in that in each opening poin~ tha ac~uator is connectecl per-manently be~ween two or three conductors of the said line, and in that the central control unit ccmprises means for selectively applying to each o~ the said conductor~ the voltage~ neces3a~y for the execution of a sequence.
According to another characteristic of the inventionr in the opening point having a mechanical control with a lock key, a series of passive electronic voltage-levQl setting components is connected between two conductors contactlessly in the position of re~t.
Any "secure" or ~desecurQI~ command by the key de~ines a position of the said key which close~ the circuit by means of one or more of the abovementioned components and the two conductoxs, one bia~ed at the positive voltage of the source by maans of a re~istor and the other connected to earth.The central unit comprise.s a detector of the level of vol~age tapped at the terminal of the re istor ad~acent to the componentst this detector supplies control signals to the means for applying to the thre~ conduc~ors the polaritie~ corresponding to tha reguest.
~3~32 The invention will be better understood from the ~ollowing description given purely by way of example and msde with reference to the accompanying drawings ln whicho ~ Fig~re ~ ~g a ~l~c~ dia~am o an em~od~ment o~
the inverltion;
- Figure 2 is a diagram of the circuit located in a ~r~nt opening point;
- Figure 3 i~ a block diag:ram of the central control unit;
~ Figure~ 4 and 5 are de~ailed diagram~ of the central control unit;
- Figure 6 is a graph explaining Figur~ 5.
- Figure l is a gQneral block diagram o~ a d2vice according to ~hQ invention which comprises essen~ially a central contxol unit l intended ~or controlling the '~de~ecuring~', "securing" or "~uper ~ecuring" o~ opening point~, such a~ ~ront door~ 2, rear door~ 3 and a tail-gate 4. ~he central control unit can receivo command~
sent by the mechanism o the igni~ion kay 5, a remote-control raceiver 6 ox an anti-attack button.
The two front doors 2 are equipped with a key lock 7 which i~ itted with electrical contact~ ~upplying electrical signal~ to the central control unit 1 for the purpo~e of l~desecuring~ ecuring~ or "~uper securing~
the opening point~.
Th~ ~tructure of the variou~ element~ of thi~
diagram i~ such that the connection between the central unlt 1 and the variou~ opening points is made simply by means of a line 8 with three conductor~ 31, 32, 33 which form~ a kind of bus ~unction between the central co~trol unit 1 and the opening points, each of these :being connected in parallel to the line 8.
~igure 2 is an electrical diagram of the circuit contained in an opening point, such a~ a ~ront door. This circuit e~ entially comprise~ three conductor~ 11, 12, 13, each connected to one of the conductor~ of the line 8 (control by key can take place, for exa~ple, between 11 and 12).
_ 5 2~343~
Each opening point comprises a triple-efect electrical actuator, for example two direct-current motor M1 and N2; the motor Ml controls the "securing" or l~desecuringll of the opening point, and the motor M2 S control~ the "super securing~ or ~de~ecuring" of the lock. In the ~super secure~ po~ition, the door cannot be opened by u~ing the mechanical con~rol element~ of the door, namely a lever or pu~her, but only by an electrical control provided by the insertion of a coded key into the lock 7 or by a remote command received by the detector 6.
According to the invention, for each actuator, the motor~ M1 and M2 are connected permanently between the three conductor~ 11, 12 and 13. In the example illustrated, the motor ~1 is connected between the conductor 13 and the conductor 12. The ~econd motor M2 is likewise connected batween the conductor~ 13 and 12. On thiR conductor 12, a diode Dl separates t h e terminals of the motors Nl and M2, and the cathode of Dl is connectad to M2. Noreover, the terminal o~ M~ ~oined ~0 ~o the conductor 12 is ex~ended on the conductor 11 by a diode D2, the cathode of which is connected to thi~
conductor 11. The control takes place be~ween the conductor~ 11 and 12. From the conductor ll an a~sembly of thxee elec~ronic components is connected, in the illustrated example Zener diodes 14 connected in series.
Fro~ the anodes o~ ~he~e Zener diodes, three term:inal~
are defined for a switch.
The other conductor 12 is connected to the common terminal of a three-po~ition switch 15 by means of a d~ode 16, the cathode of which is connected to the conductor 12. ~he function of the diode 16 is to preven~
a power current from pas ing through the Zener diodes if a key request occurs during a power transfer for "super ecuring". Thi~ three-position switch consists, in fact, of the coded key inserted into the lock 7; the three pos~ible po~itions of the lock key 15 corresp~nd to ~ho three abovementioned states of "de~ecure~, "secure" and "super secure". Thi~ switch close~ a circuit via one or more Zener diode~ according to tha particular request.
2~3~
Finally, a re~onant circuit con~i~ting of a coil 17 and of a capacitor 18 is connected batween the two conductors 11 and 12, with the in~erpo~ition of a contact 19 which correspond~ to the open-door contactor O,D.C.
and which is closed when the door i~ open or Lmproperly closed.
Th~ electrical circuit integrated in ~he other opening point~, such as the rear door~ or the tail gate, does not include tha elements 14 to 16 corre~ponding to the key lock 7.
Figuxe 3 illustrate~ the circuit of ths cen~ral control unit in simplified form. The line 8 is connected ~o three inputs 21, 22 and 23 which corre~pond respectivaly to the conductor~ 11, 12 and 13 of each of the opening point~. Each of these input~ i~ connec~ed to the contact of a control relay, Bl, B2 and B3 resp~
ectively, these being shown in the ~tate of xe~t. The coils of the relay~ B1, B2 and B3 are controlled by a microprocessor 20, a~ will be descxibed in de~ail later.
In the state of re~t corresponding to the vehicle lef~
unattended, the terminal 23 corre~ponding to the conductor 33 o~ the line 8 and the terminal 22 corres-ponding to ~he conductor 32 of the line 8 are connec~ed to the negative terminal 24 of the ~ehicle'~ ~upply battary. When the relays B2 and B3 are energi~ed into the working position, the terminals 22 and 23 are connected to the po~itive terminal 25 of the vehicle battery.
When the relay Bl i~ energised, the terminal 21 corre~ponding to the conductor 31 of the line 8 is connected to the negative terminal 24 o~ the battery. In the po~ition of rest, the terminal 21 i8 connected to a measuring detector 26 which supplie~ information to the microproce ~or 20. Thi~ terminal 21 i~ biased at the positive voltage by a re~ tor 10 which is connected to the conductor 2} by means of the break contact 27 of th~
relay Bl and the make contact of a switch 30' controlled by the actuation of the ignition key.
Moreover, when the vehicle i~.being u~ed, with the ignition key in3erted, the break contact 27 of the , _ 7 ~ 3~32 relay Bl can al30 be connected to an alternating-current generator 28 either by means of trap circuits connected in serias or by means of a resistor, in which case the ~tring of trap circuit can be connected in parallel between 12 and 13 or omitted. Each of the~ trap circuit~
i~ tuned to th re~onant frequency of the re~onant circui~ 17, 18 of one of the opening point~. An alarm device, such a~ an indicator lamp 29t is connecte~ in parallel to each of the resonant circuits. This indicator lamp can consist, for example, of a light~emitting diode.
The putting into opera~ion of the genera or 28 i~
controlled by a signal occurring as a result o tha clo~ing of a contact 30 which is clos2d by the ignition key of the vehicle and which corresponds to the circuit 5 of Figure l.
The microprocessor 20 al90 receiYas from the contact 30 information on the insertion of the ignition key of the vehicle. It also receives information by mean~
o~ an anti-attack contact 34 which can be clo4ed by thQ
u3er when he i5 in the vehicle. Finally, the microproces~or 20 receive~ a ~secure~ super secuxe~ or "de~ecura" command provided by means of a contact 35 as~ociated with the remote-control detector 6.
Figure 4 i~ a detailed diagram representing the detector circuit 26. ~he signal coming from the mea~uring conductor 31 is cent to three operational amplifiers 41, 42 and 43 which, in addition, each receive a nominal value matched to the voltage~ of the Zener diodes 14.
In the example illustrated, these reference signal~ are respectivQly equal to 2, 4 and 6 volts. The signal supplied by the first operational amplifier 41 i3 sent to an AND ga~e 44 with three inputs, the other two inputs of which re~eive a positive voltage corresponding ~o th~ logical state 1. The output of the logical AND
gate 44 is sent to a monostable multivibrator 45, the output of which supplies a first command signal.
The output of the second operational amplifier is sent to a logic ~ND circuit 46 with three input~; the second input of thi~ circuit receives the output signal - 8 2~3~
ro~ the operational ampliier 43 and the third input of thi~ circuit receives the in~erted ou~pu~ signal from the compar~tor 41, the inver~ion being carried out hy an in~erting gate 47. The output of this logic AND circuit 46 controls a second monostable multivibrator 48, the output of which likewise supplies a command signal.
The output of the operational amplifier 43 i~
sant to a logical AND circuit 49 wit~h three inputs, the other two inpu~s of which receive re~pectively the lQ inverted output signal from ~he operational amplifier 41 and the invertad output signal from the operational amplifi0r 42 by means of an inverting gate 51. The output of the logical ~ND circuit 49 controls a third mono~table multivibrator 52, the output of which liXewi~e ~upplie~
a command signal.
Figure 5 is a diagram ~howing the ~enerator 28 in detail. It con~ist3 essentially of four multivib.rator~
61, 62, 63 and 64 which are connected in serie~ 50 a~ to con~titute a ring counter; Figure 6 is a timing diagram respectively representing clock signals sent to each of the multi~ibr~tors and their output Q.
The output signal Q o each of the multivibrators controls a transi~tor 65 which forms a swltch arranged between the diract voltage source and the feed wire of each periodic-signal ~enerator 71, 72, 73 and 74. The output of each of thes0 generators is sent to the conductor 36 of Figure 3 upst~m of the trap circuits.
The frequencies of the signals supplied by the generators 71 to 74 corre~pond respectively to thQ
resonan~ frequencies of each o~ ~he resonant-circuit assemblies 17, 18 of the gate circuit and corresponding trap circuit assembly of the central control unit.
The device which has ~u~t bean de~cribed operate~
as follows~ When ~he door key is inserted into the lock . 35 7, thi~ key can a~ume the three positions of the switch 15. ~he voltage of the Zener diode9 14 i~ selected so as ~o be slightly below the tri~ering thre~hold of the comparator~ 41 to 43; thus, if a ZenQr diode vol~age ~lightly below 2 volt~ elected, the tr~qgerin~ of the 2 ~ 4 3 A 3 2 g comparater~ 41, 42 and 43 will be obtained when only one of the Zener diode~ 14 i~ connected by ths ~witch 15, the tr~ri~g of the comparators 42 and 43 when two diode~ are c~nnectæd and the triggering of ~he compara~or 43 when the thre~ Zener diode~ 14 are connected by the switch 15.
In the absenc~ of a request by the key in the lock 7, the voltags read off by the detecto.r 26 i~ the battsry voltaga which is sent from ~he terminal 25 via the re~i~tor 10.
Since this voltage i~ higher than the maximum thre~hold of 6 V, none of the ~omparator~ 41 to 43 change~ from tha logical value ~0" to the logical value ~1". No command is sent to tha coil~ of the relay~ Bl, B2 and B3. If the key is in~erted into ~he lock 7 and LS
actuated in the "de~ecuring~ ~irection, the contac~
corre~pond~ to the connecting of the three Zener diode~
14 in serie~ and only the comparator 43 supplie~ a logical "1" at its output, thereby unblocking the log.ical AND gate 49 which change~ to 1 and aCtivat~the multi vibrator 52 which provides a command for activating the coil of the relay B2. The efect of this i~; to apply the po~i~ive supply voltage to the conductor 32 o the bundle 8 and con equently to the control line 12. The motor M1 and tha motor M2 by mean~ of the diode D1 are thu~ fed in the l'de3ecuring" direction in each of the doors con-trolled by the central control unit.
If the door key is actuated in the ~securing~
direction, there ara two po3itions, the first corre~pond-ing to the normal ~ecuring~ of the door~ and the second to "~uper securing". ~he~e two positions can be two successive pQsition~ of the~kQy or the second poC;ition can correspond to keeping the key in the "securing"
position for a given tLme.
If the door key is actuated in order to obtain ~'securing~', the position corresponding to two diodes 14 in s2rie~ is obtained and the two oomparator~ 4~ and 43 change to the logical state "l"; the inverter 51 block~
the AND gate 49 and only thQ gate 46 changes to ~he logicai ~tate "1", thereby acti~ating the multivibrator - lo 2~43~32 48 which control~ the supp~y to ths coil of th~ relay B30 The re~ul~ o thi~ i~ that the motor Ml i5 fed in the oppo~ite d~rection to the lldesecuring" direction. The motor M2 i~ not actuated because its two terminals are S connected to the same positive supply potential and Dl opposes the pa~sage of current towardR 32.
Finally, if the key change~ to the ~uper secure"
position, only the first Zener diode 14 is connected to the measuring circuit and the comparators 41, 42 and 43 change to the logical state "1". The output of the comparator 41 bloc~s the gates 46 and 49 by means of the inverting circuits 47 and 51.~The result of this i~ that only ths gate 44 i~ unblocked, thereby actuating the multivibrator 45 which controls the supply ~o the coil of the relays B1 and B3. In thi~ case, the po~itive voltage is applied to the conductor 13, the other conductor3 being connected to the negative terminal; the motor M1 is actuated in the ~securing~ direction and th~ motor M2 ls llkewise actuated in the "securingl' direction, tho combination con~ituting the ~Isuper secure" ~acility.
The diodes D1 and D2 make it possible to isolate or select M2 according to the polarities applied to the three conductors, this allowing it to be put at re~t in the event of a request for simply "securing" when Ml alona i~ activated.
. Should there be two simultaneous key requests, the lowe~t Zener diode voltag0 ha~ priority, thu~ det~r-mining priority in the event o two simultaneou~
diferent key requests. In the example given, the "super secure" reque~t corresponding to the lowe~t Zener diode volta~e ha~ priority over the other commands. The same i8 true of the "secure" command which has priority over a "desecure" command. This is a choice which can be changed as de~ired. TAis and protection~ on the mono~table multivibratoxs prevent the tran~mission of two different RLmultaneou~ commands.
The Zener diode~ 14 can be replaced by other electronic components dividing a voltage applied to the terminal3 of the two conductor~. It would be po~sible, 11 2~l~3~32 or example, to use three resistor~ of different value~
connseted in parallel be~ween the conductor 11 and the movabla contact of the switch 15, each resis tor forming a voltage divider bridge with the resistor 10, ~he free end~ of the resi~tors forming three contact stud~ of the switch.
The microprocessor 20 can also be controlled by the remote control represented diagr~mmatically by the contact 35 which supplies ~desecuring~ or "securing"
information to the microprocessor 20.
The device according to the invention also comprises an anti-attack device rep esen~ed d~agram-matically by the contact 34 which is actuated by the occupant of the vehicle when he i~ inside this and which likewise transmits ~securing~ command information to the microprocessox 20.
The microprocessor 20 also receive~ inormation relating to the ignition key of the vehicle (contact 30).
The information provided as a re~ult of the actuation o the ignition key of the ~Jahicle allows the actuation of the anti-attack de~ice and inhibits the remote control.
Furthermore, the actua~ion of the ignition key of the vehicle command~ the monitoring procedure of the door contacts by acti~ating ths generator 28 which therefore operata3 only when the ignition key is in the active position. This position cancel~ the positive direct voltage applied to the control conductor 21 which is thu~
sub~ected to the periodic signals supplied by the gener-ator 2 8 .
Should a door "securing" or "desecuringl' command be tran~mitted during this monitoring as a result of the actuation of the anti-attack device, the monitoring i5 intarrupted for a brief moment by the microproce3~0r 2 for the purpose of execute the command.
The monitoring of the ~tate of closure of the doors is carried out by using two conductors only, namely the conductor~ 31 32, A~ can be seen by referring to Figure~ 5 and 6, the generator supplie~ a train of pulse~ of different 12 _ 2~3~
fre~uQncies which corre~pond respectively to the resonant frequ0ncie~ of the resonant-circuit/trap-circuit pairs of tha cen~ral control unit and of each door.
I~ one of the door contart~ 19 is clo3ed, tha current circulate~ via the two conductors ll and 12, thera i~ a drop of Lmpedance of the resonant circuit to the resonant freguency of the door in que~tion, and the re~ult of thi~ i~ that the voltage at ~he terminal~ o~
the corresponding trap circuit of the central control unit assumes a higher value, thereby actuating the alarm consi~ting, for example, of the indic:ator lamp 29 which flash~s at the cyclic frequency of the generator 28.
Accordin~ to another ~mxxL~t of the ~tion, the generator 28 supplies a complex voltage comprising a plurali~y of equal voltage~, the frequencie5 of which correspond to the frequencie~ of the resonant circuit~.
In this case, a summing circuit can be u3ed to ssnd all the fraquencie~ along the conductor 11. In this CaBe, the ~our ~ignal ganerators ars supplied con~inuously and the rlng counter i~ no longer u~ed.
I~ can ba seQn that, when the vehicla is at a stand~till (no ignition contact made), a positi~e voltage is applied to the control conductor ll, 21, 31 and that, even if a door i~ improperly clo~ed, with a contact 19 ~5 closed, no current will circulate in the two control conductor~ ll and 12 because the capacitor of the reson-ant circuit o~ the Lmproperly closed door forms a direct-current switch.
According to anothsr ~xxlnent of ~he invention,.a single-frequency generator is provided in the central control unit only, and in each door the series resonant circuit i~ replaced by a vibrator operating at the frequency supplied by the generator of the central control unit.
~hi~ emxX~n~t makes it possible to limit t h e space ~red on the dashboard ~y nu~nus ~nd~cator lamps.
However, a single indicator lamp constituting a permanent alarm can be provided, whilst the operation of tha vibrator i8 delayed and the ~ound signal cease~ after a - 13 2~ 3~
particular time.
To prevent current con~umption when ignition contact i~ not made and a po~itive direct ~oltage i9 sent along tha fir~t control conductor 11J a capacitor can be arranged in sarie~ with each of the vibrator~. Since the indicator of an improperly closed door is in the door itself, the a~tention of the occupants i9 gained much more quickly, above all where rear doors are concerned.
According to ano~her embod~nt of the invention the trap circuits are omitted and the generator 28 permanently sends periodic wave trains o~ different frequenciq~ cyclically. These ~ignals pass through a re~istor arranged in series with the generator 28 i.n the central unit. To~ether with the impedance of the re~onant circuits, thîs re~i~tor performs the function of a voltage divider bridge: the amplitude vf each of the signal~ pa~sing through it i~ seen at it~ ter~inal ad~acent to the conductor 21. In the ab~ence of an impxoperly closed door, tha amplitude of the signal at the abovementioned terminal is that of the sign~l trans-mitted by the generator Z8. From the moment when a door contact l9 clo~e~, thi~ amplitude fall~ in the manner of a voltage divider bridge for the signal to the resonant frequency of the improperly closed door. An ala.rm is triggered a~ ~oon a~ thiq variation in voltage amplitude i~ detected. Since an~ signal at a given frequency i~
transmitted pariodically for a ~ period as a result of the ~pply o~ the sy3tem by the ring counter tsee Fig.
5)~ in the event of a voltage drop it is known exactly which door i8 involved since a door is sen~itive to its natural frequency and not to the other freque.ncies transmitted for the other door~ during tha remaining 3/4 of the period. The period is divided into a~ many portion~ as there are doors to be monitored (4 herQ in 3 5 tha example given ) .
According to another en~li~t of the mv~ntion, it is also possible to arrange the series of trap circuits in parallel between the two conductor~ 21 and 2 2 in the central unit, that iq to say between the output 36 of the :
~3~3~
_ 14 -generator connectPd to the conductor 21 and the negative polari~y of the battery connected to the conductor 22.
The generator 28 permanently send~ ~he periodic wave tr~ins at the various frequencie~ cyclically via a resistor. When its natural frequency i~ received, each ~rap circuit has a high Lmpedance. As soon as the door contact 19 of the coxresponding resonant circuit is closed, the Lmpedance at the terminaLs of the said trap circuit fall~, and the same i9 true of the voltage a~ it~
terminals. An alarm i5 triggered a~ soon as this voltage drop is detected.
It san be een that the inven~ion, using only three junction conductors forming a bu~ between the central control unit and each of the opening point~, make~ it po~sible to control in a centrali~ed manner the opening, "3ecuring" and even "super securing" of tha door~ and to send from each of the doors the necles~ary commands pro~ided b~ the door key.
Another advantage of ~he invention is that only passive elemen~s are accommodated in the door~, thi~
bein~ important from the point of view o~ cost and reliabllity.
Moreover, two of these conductors are sufficient to carry out the monitoring of the state of closure o~
all the opening points, with the improperly closed door being indicated each time.
~ he invention also applies to opening points compri~ing a double-effect actuator, such as opening point~ without "super ~ecuring" tluggage boot~ petrol flap etc.). In this ca~e, i the actuator i9 a reversibla motor, it will ~e connected permanently between two conductor~.
Claims (9)
1. Device for the centralised control of the opening points (2, 3, 4) of a motor vehicle, in which the opening points have a triple-effect electrical actuator (M1, M2) comprising at least one electric motor, and some opening points have a mechanically controlled device with a lock key (7) sending commands to a central control unit (1) which also receives commands coming particularly from the ignition key (5) and/or from a remote-control set (6) and/or from an anti-attack button, characterised in that the central control unit (1) is connected to each of the opening points (2, 3, 4) by means of a single line (8) with three conductors (31, 32, 33) used sometimes for power transfer and sometimes, where at least two of. them are concerned, for information transfer, in that in each opening point (2, 3, 4) the actuator (M1, M2) is connected permanently between the three conductors of the said line (8), and in that the central control unit (1) comprises means (20, 26, B1, B2, B3) for selectively applying to each of the said conductors (31, 32, 33) the voltages necessary for the execution of a sequence.
2. Centralised control device according to Claim 1, characterised in that, in the opening points (2) having a mechanical control with a lock key (7), a series of passive electronic voltage-level setting components (14) is connected to a first conductor (11), in that, for each position of the said key, contact is made between a second conductor (12) and one of the abovementioned components (14), in that a direct voltage is applied between the two conductors (11, 12) by means of a resistor (10), and in that the central unit comprises a voltage-level detector (26) which supplies control signals to the means (B1, B2, B3) for applying a polarity to the conductors (31, 32, 33).
3. Centralised control device according to Claim 2, characterised in that the actuator comprises a first motor (M1) connected between two conductors (12, 13) of the line (8) and a second motor (M2) connected directly to one of said two conductors (13) and connected to the other of these conductors (12), in that a first diode (D1), the cathode of which is connected directly to the said second motor, separates the terminals of the two motors on the said other conductor (12), and in that a second diode (D2) is connected between the terminal of the second motor (M2) connected between the terminal of the second motor (M2) connected to the said other conductor (13) and the third conductor (11) of the line (8), the anode of this second diode being connected to the second motor (M2).
4. Centralised control device according to any one of Claims 1 to 3, characterised in that, in the central control unit (1), the means for applying a polarity to the three conductors consist of relays (B1, B2, B3), the position of rest of which corresponds to a positive polarity one of the conductors (11) and to a negative polarity on the other two conductors (12, 13).
5. Centralised control device according to claims 2 , characterised in that the signal supplied by the detector (26) is sent to a microprocessor (20) which controls the means (B1, B2, B3) for applying a polarity and which receives a signal from the ignition key (5, 30), from the remote-control set (6, 35) or from an "anti-attack" control (34).
6. Centralised control device according to Claim 2 , characterised in that the electrical voltage-level setting components are Zener diodes (14) connected in series.
7. Centralised control device according to Claim 2 , characterised in that the central control unit (1)has comparators (41-43) receiving, on the one hand, the voltage supplied as a result of the actuation of the lock key (7) and, on the other hand, a reference voltage, and the output of each comparator (41-43) is sent to a logical circuit which interprets the key request, controlling a monostable multivibration (45, 48, 52) for actuating the means (B1, B2, B3) for applying polarity to the three conductors (31, 32, 33).
8. Centralised control device according to Claim 7, characterised in that there is a priority circuit (44, 45, 46, 47, 51, 48, 49, 52) making it possible to deter-mine priority among the various commands for controlling the opening points (2-4).
9. Centalised control device according to Claim 8, characterised in t h a t said circuit consists of logical AND circuit (44, 46, 49) and of inverters (47, 51) connected between the comparators (41-43) and the multivibrators (45, 48, 52).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9006935A FR2662736B1 (en) | 1990-06-05 | 1990-06-05 | DEVICE FOR CENTRALIZED CONTROL OF OPENING ELEMENTS OF A MOTOR VEHICLE. |
| FR9006935 | 1990-06-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2043432A1 true CA2043432A1 (en) | 1991-12-06 |
Family
ID=9397258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002043432A Abandoned CA2043432A1 (en) | 1990-06-05 | 1991-05-29 | Device for the centralised control of the opening points of a motor vehicle |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US5248898A (en) |
| EP (1) | EP0460986B1 (en) |
| JP (1) | JPH04231574A (en) |
| BR (1) | BR9102242A (en) |
| CA (1) | CA2043432A1 (en) |
| DE (1) | DE69103580T2 (en) |
| ES (1) | ES2063459T3 (en) |
| FR (1) | FR2662736B1 (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4205271C1 (en) * | 1992-02-21 | 1993-01-14 | Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De | Control circuit for central locking installation - uses switch to change potential to change state of control switch for remote operation of motor vehicle doors or boot |
| DE4323813C2 (en) * | 1992-07-17 | 1999-02-18 | Mitsui Mining & Smelting Co | Vehicle door locking device with overlock mechanism |
| WO1994019218A1 (en) * | 1993-02-16 | 1994-09-01 | Jan Zikl | Circuit arrangement of a safety system |
| JPH06307138A (en) * | 1993-04-21 | 1994-11-01 | Nissan Motor Co Ltd | Car theft prevention device |
| FR2715184A1 (en) * | 1994-01-14 | 1995-07-21 | Bru Henri Pierre Gaetan | Child safety lock device applied to individual doors on motor vehicle |
| FR2718182B1 (en) * | 1994-03-31 | 1996-06-21 | Rockwell Bcs France | Motor vehicle front door lock and set of locks for the front and rear doors and their electronic centralized control system. |
| US5572098A (en) * | 1994-07-01 | 1996-11-05 | General Motors Corporation | Motor vehicle accessory control with control module having single power terminal |
| JP2693407B2 (en) * | 1994-07-30 | 1997-12-24 | キーケルト、アクチェンゲゼルシャフト | Locking device for automobile |
| DE19530719A1 (en) * | 1995-08-18 | 1997-02-20 | Kiekert Ag | Operation of door lock electrical control system for vehicle with workshop mode |
| DE19530724A1 (en) * | 1995-08-18 | 1997-02-20 | Kiekert Ag | Control system for vehicle door central locking |
| GB2309481A (en) * | 1996-01-29 | 1997-07-30 | John Phillip Chevalier | Central locking system with electronic control circuitry |
| US5955940A (en) * | 1997-06-17 | 1999-09-21 | Advance Security Inc. | Integrated security door lock system |
| FR2791382B1 (en) | 1999-03-24 | 2001-06-29 | Valeo Securite Habitacle | ELECTRIC LOCK IN PARTICULAR FOR A MOTOR VEHICLE DOOR |
| DE102011113647A1 (en) * | 2011-09-19 | 2013-03-21 | Audi Ag | Motor vehicle lock |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2965810D1 (en) * | 1978-12-22 | 1983-08-04 | Lucas Ind Plc | Motor vehicle electrical system |
| US4440006A (en) * | 1979-03-24 | 1984-04-03 | Kiekert Gmbh & Co. Kommanditgesellschaft | Antitheft central lock system for a motor vehicle |
| US4340824A (en) * | 1980-02-11 | 1982-07-20 | Motorola, Inc. | Auxiliary steering wheel command system |
| DE3210923A1 (en) * | 1982-03-25 | 1983-09-29 | Fichtel & Sachs Ag, 8720 Schweinfurt | CENTRAL LOCKING DEVICE FOR DOORS OR THE LIKE, IN PARTICULAR ON MOTOR VEHICLES |
| DE3541995C2 (en) * | 1985-11-28 | 1994-09-01 | Teves Gmbh Alfred | Switching arrangement for electromotive actuators |
| US4883974A (en) * | 1988-05-06 | 1989-11-28 | United Technologies Automotive, Inc. | Vehicular door multiplexing system |
| US5054300A (en) * | 1988-11-09 | 1991-10-08 | Ohi Seisakusho Co., Ltd. | Vehicle door lock system |
-
1990
- 1990-06-05 FR FR9006935A patent/FR2662736B1/en not_active Expired - Lifetime
-
1991
- 1991-05-17 EP EP91401288A patent/EP0460986B1/en not_active Expired - Lifetime
- 1991-05-17 DE DE69103580T patent/DE69103580T2/en not_active Expired - Fee Related
- 1991-05-17 ES ES91401288T patent/ES2063459T3/en not_active Expired - Lifetime
- 1991-05-29 CA CA002043432A patent/CA2043432A1/en not_active Abandoned
- 1991-05-31 BR BR919102242A patent/BR9102242A/en unknown
- 1991-06-04 JP JP3132887A patent/JPH04231574A/en active Pending
- 1991-06-04 US US07/709,935 patent/US5248898A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE69103580D1 (en) | 1994-09-29 |
| ES2063459T3 (en) | 1995-01-01 |
| US5248898A (en) | 1993-09-28 |
| FR2662736A1 (en) | 1991-12-06 |
| JPH04231574A (en) | 1992-08-20 |
| FR2662736B1 (en) | 1992-10-30 |
| EP0460986B1 (en) | 1994-08-24 |
| DE69103580T2 (en) | 1994-12-22 |
| BR9102242A (en) | 1992-01-07 |
| EP0460986A1 (en) | 1991-12-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |