CN103336453B - Auto power-on and power-off controller of vehicle-mounted electronic equipment and control method thereof - Google Patents
Auto power-on and power-off controller of vehicle-mounted electronic equipment and control method thereof Download PDFInfo
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- CN103336453B CN103336453B CN201310237726.2A CN201310237726A CN103336453B CN 103336453 B CN103336453 B CN 103336453B CN 201310237726 A CN201310237726 A CN 201310237726A CN 103336453 B CN103336453 B CN 103336453B
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Abstract
The invention discloses an auto power-on and power-off controller of vehicle-mounted electronic equipment and a control method thereof. The controller comprises a first electric discharge channel, a second electric discharge channel, a first timer, a second timer, an AND gate, a triode and a relay, wherein the first electric discharge channel and the second electric discharge channel are connected to the first timer and the second timer respectively; output signals of the first timer and the second timer are inputted into the AND gate; an output end of the AND gate is connected to a base electrode of the triode; a collector electrode of the triode is connected to a coil of the relay; a contact point of the relay is connected between an uncontrolled power supply/a controlled power supply and an output power supply; the output power supply is the work power supply of the vehicle-mounted electronic equipment. Through the adoption of the circuits and the technology of double electric discharge channels, double timers, logic, arithmetic and the like, the control flexibility is greatly improved; the control functions to the electronic equipment are greatly increased; the requirement to auto power-on and power-off of the vehicle-mounted electronic equipment under various conditions can be satisfied.
Description
Technical field
The invention belongs to vehicle electronic device technical field, relate to a kind of vehicle electronic device controller, especially a kind of vehicle electronic device Auto Power On and closedown controller and control method thereof.
Background technology
Along with the arrival of China's automotive society, the vehicle electronic devices such as drive recorder, safe driving early-warning apparatus, navigating instrument installed by increasing automobile.Drive recorder is mainly used in traffic events " evidence obtaining ", and safe driving early-warning apparatus reminds driver to avoid breaking rules and regulations, so these two kinds of electronic equipments all should be in running order when running car.Current vehicle electronic device is all manual startup and shutdown, and general operation procedure connects electronic equipment again after starting engine, and kill engine after cutting off electronic equipment, running program mistake or omission can cause equipment operation irregularity again.Also likely in driving procedure, driver forgets the equipment of opening always, and equipment performs practically no function.Visible, although just touch the button by one, at every turn with all correct these equipment of manual open and close in time of car, be inconvenient for vast non-professional driver.
In prior art, the time relay of on-delay can solve the problem of vehicle electronic device automatic time delay start.Complete self-inspection at automobile and after starting engine, through appropriate time relay contact closure to power electronic equipment, achieve the automatic time delay start of vehicle electronic device.But due to the feature of the time relay, vehicle electronic device startup and shutdown are controlled with it, there is following two problems: one is the starting engine (restarting engine as during accident extinguishing) when vehicle electronic device works, and there will be the situation of vehicle electronic device operation irregularity.This is because the mechanical type of the time relay or electronic timer can not carry out time delay again rapidly after time delay terminates, but remaining on time delay done state always, the pole low-voltage of starting engine moment causes vehicle electronic device to power instantaneous interruption thus operation irregularity.Two is vehicle electronic device closing problems, and because its timer construction is simple, function singleness, first can not close electronic equipment off before shutdown, can only cut off the electricity supply and close electronic equipment and engine simultaneously, this does not meet car electrics working specification.
In sum, manual unlocking of the prior art and close the vehicle electronic device such as drive recorder, safe driving early-warning apparatus, navigating instrument and easily occur operating mistake or forget, although be not difficult to correct, after all or inconvenient.Although the problem of starting engine vehicle electronic device automatic time delay start under normal circumstances can be solved with the time relay of on-delay, but starting engine still there will be vehicle electronic device operation irregularity under special circumstances, and the car electrics working specification killed engine after can not realizing first closing vehicle electronic device.Therefore, user is in the urgent need to a kind of equipment that can control vehicle electronic device Auto Power On and specification shutdown.
Summary of the invention
The object of the invention is to the shortcoming overcoming above-mentioned prior art, a kind of vehicle electronic device Auto Power On and closedown controller and control method thereof are provided, this controller adopts two-way discharge path, two-way timer, the circuit such as logic and operation and technology, can realize the control of vehicle electronic device Auto Power On and specification shutdown.
The object of the invention is to be achieved through the following technical solutions:
This kind of vehicle electronic device Auto Power On and closedown controller, comprise the first discharge path, the second discharge path, first timer, second timer, with door, triode and relay.Described first discharge path and the second discharge path are connected to first timer and second timer respectively; The output signal of described first timer and second timer inputs to and door; The described base stage being connected to triode with the output terminal of door; The collector of described triode is connected to the coil of relay; The contact of described relay is connected to uncontrolled power supply or between controlled source and out-put supply, described out-put supply is vehicle electronic device working power; Described first timer delay time is greater than second timer.
Further, above-mentioned first discharge path and the second discharge path are capacitor rapid discharge path.
Further, above-mentioned first discharge path is made up of control circuit and discharge channel, and the second discharge path is composed in series by resistance and button.
Further, above-mentioned first timer and second timer form by RC timing circuit, resistor voltage divider circuit and operational amplifier; The in-phase input end of described operational amplifier connects RC timing circuit, inverting input contact resistance bleeder circuit, and output terminal is connected to and door; RC timing circuit is composed in series by timing resistor R and timing capacitor C, produces the voltage changed with the duration of charging; Described resistor voltage divider circuit is made up of two resistant series, produces the reference voltage that operational amplifier compares.
The power supply of above-mentioned first timer and second timer is connected to controlled source.
In above-mentioned first discharge path, control circuit is connected to the control end of controlled source and discharge channel, and other connecting terminals of discharge channel are connected to the time capacitor positive pole of controlled source and first timer; The time capacitor of the second discharge path and second timer is in parallel.
Above-mentioned vehicle electronic device comprises drive recorder, safe driving early-warning apparatus, navigating instrument etc.
Based on above-described vehicle electronic device Auto Power On and closedown controller, the present invention also proposes the control method of this vehicle electronic device Auto Power On a kind of and closedown controller.Specifically comprise following several control mode:
1) control procedure of complete specifications under normal circumstances
Initial state: engine and vehicle electronic device all do not work
Final state: engine and vehicle electronic device all do not work
(1) insert automobile key and rotate to ON position (being expressed as in figure " connection electric switch ", lower same), first timer and second timer trigger, automobile enters self-inspection state and continues 3 ~ 5S simultaneously;
(2) self-inspection terminates rear key and goes to START position (igniting), engine start;
(3) when described first timer time delay terminates, described vehicle electronic device Auto Power On and closedown controller start power to vehicle electronic device and keep always, and so far engine and vehicle electronic device transfer duty to by off position;
(4) click the button (button click) of the second discharge path, described vehicle electronic device Auto Power On and closedown controller cut off vehicle electronic device power supply, and vehicle electronic device is closed;
(5) between second timer time delay, automobile key goes to OFF position (stopping working), tail-off;
2) kill engine and car electronic equipment control procedure simultaneously
Initial state: engine and vehicle electronic device all work
Final state: engine and vehicle electronic device all do not work
Under the condition that engine and vehicle electronic device all work, automobile key goes to OFF position (directly stopping working), tail-off; Vehicle electronic device Auto Power On and closedown controller close vehicle electronic device simultaneously;
3) engine accident extinguishing restarts control procedure
Initial state: engine does not work, vehicle electronic device work
Final state: engine and vehicle electronic device all work
(1) key goes to START position (igniting) from ON position, engine start; Meanwhile, vehicle electronic device Auto Power On and closedown controller close vehicle electronic device;
(2) when first timer time delay terminates, described vehicle electronic device Auto Power On and closedown controller are powered to vehicle electronic device and are kept always;
4) first timer time delay terminates the control procedure of rear starting engine
Initial state: engine does not work, vehicle electronic device work
Final state: engine and vehicle electronic device all work
(1) key goes to START position (igniting) from ON position, engine start; Meanwhile, described vehicle electronic device Auto Power On and closedown controller close vehicle electronic device;
(2) when described first timer time delay terminates, described vehicle electronic device Auto Power On and closedown controller are automatically powered to vehicle electronic device and are kept always;
5) without the control procedure of the direct starting engine of self-inspection
Initial state: engine and vehicle electronic device all do not work
Final state: engine and vehicle electronic device all work
(1) insert automobile key and directly go to START position (direct-fire), engine start; Meanwhile, described first timer and second timer trigger;
(2) when described first timer time delay terminates, described vehicle electronic device Auto Power On and closedown controller are powered to vehicle electronic device and are kept always.
Compared with prior art, the present invention has following beneficial effect:
Vehicle electronic device Auto Power On of the present invention and closedown controller are provided with two-way timer, and every road timer has rapid discharge path, rapid discharge path onset under given conditions, time capacitor discharges rapidly, make timer can start rapidly time delay again after time delay terminates, and logic and operation is carried out in the output of two-way timer, substantially increase and control dirigibility and the controlling functions that adds electronic equipment, the demand of vehicle electronic device Auto Power On and shutdown under various condition can be met.
Accompanying drawing explanation
Fig. 1 is motor car engine under the present invention controls and vehicle electronic device finite state machine;
Fig. 2 is structured flowchart of the present invention;
Fig. 3 is the structural representation of discharge path of the present invention and timer.
Embodiment
See Fig. 2: vehicle electronic device Auto Power On of the present invention and closedown controller comprise the first discharge path, the second discharge path, first timer, second timer, with door, triode and relay; First discharge path and the second discharge path are connected to first timer and second timer respectively, the output signal of first timer and second timer inputs to and door, the base stage of triode is connected to the output terminal of door, the collector of triode is connected to the coil of relay, and the contact of relay is connected to uncontrolled power supply or between controlled source and out-put supply.Controlled source of the present invention refers to by igniting key position or whether inserts the power supply controlled; Controlled source does not refer to the not power supply that exists all the time by key controls, and out-put supply refers to the working power of vehicle electronic device.First timer 1 delay time of the present invention is greater than the delay time of second timer 2.The delay time of first timer 1 and second timer 2 all can set arbitrarily as required.
First discharge path of the present invention and the second discharge path, first timer 1 and second timer 2 structure are as Fig. 3.First timer and second timer form by RC timing circuit, resistor voltage divider circuit and operational amplifier.RC timing circuit is composed in series by timing resistor R and timing capacitor C.Between timer time delay, capacitor its voltage that charges constantly raises, and when voltage is increased to a certain reference value, time delay terminates.Resistor voltage divider circuit is formed by two resistant series, for operational amplifier provides the reference voltage compared.Operational amplifier is applied as voltage comparator, and its in-phase input end connects RC timing circuit, and inverting input contact resistance bleeder circuit, output terminal is connected to and door.Be specially: the two ends of RC timing circuit are connected to+12V and the ground wire of controlled source respectively, middle common port is connected to the in-phase input end of operational amplifier; The two ends of resistor voltage divider circuit are also connected to+12V and the ground wire of controlled source respectively, and common port is connected to the inverting input of operational amplifier.
First discharge path is made up of control circuit and discharge channel, control circuit connects+12V and the ground wire of controlled source, its output terminal is connected to the control end of discharge channel, and other connecting terminals of discharge channel meet the time capacitor C of+12V of controlled source, ground wire and first timer 1
1positive pole.Second discharge path is composed in series by resistance and button, with the time capacitor C of second timer 2
2be in parallel.
Between timer time delay, discharge path disconnects, and power supply is charged to capacitor C by resistance R, and because condenser voltage is lower than reference voltage, the output of operational amplifier is low level; When condenser voltage exceedes reference voltage, operational amplifier exports high level, and this timer time delay terminates.Under normal circumstances during starting engine, insert key and go to ON position, controlled source connection+12V, first timer 1 and second timer 2 trigger simultaneously, the equal output low level of its operational amplifier, electronic equipment does not work, and completes self-inspection and engine ignition between time delay, until the time delay of first timer 1 terminates, two operational amplifiers all export high level, also export high level with door, triode saturation conduction, the relay coil energising closing of contact, vehicle electronic device work; During electronic device works, the operational amplifier of two timers all exports high level, if now starting engine, between burn period, the control circuit controlled discharge passage of the first discharge path is connected, capacitor C
1rapid electric discharge and voltage reduce, and the output of operational amplifier 1 becomes low level at once, and with door also output low level, triode ends, and relay coil breaker point disconnects, and closes vehicle electronic device; Capacitor C at the end of igniting
1start again charging, first timer 1 enters delay stage, until time delay terminates, electronic equipment restores electricity.Before automobile flameout, engine and electronic equipment are all in running order, and the automatic resetting hand-driven clicking the second discharge path often drives button, press moment, capacitor C at button
2rapid electric discharge, operational amplifier 2 exports and becomes low level, closes electronic equipment, capacitor C after button release
2start again charging, second timer 2 enters delay stage, kills engine between its time delay.
Theoretical according to capacitor charging/discharging, start charging when capacitor initial voltage is zero, as the condenser voltage U of first timer 1
c1equal its reference voltage U
r1time, first timer time delay terminates, as the condenser voltage U of second timer 2
c2equal its reference voltage U
r2time, second timer time delay terminates.The delay time t of first timer 1 and second timer 2
1and t
2be calculated as follows:
In formula, each physical quantity unit is R: Ω; C:F; T:S.
The major advantage being made up of timer RC timing circuit, resistor voltage divider circuit and operational amplifier is that timing is accurate, and delay time is flexibly easy to adjust.Formula (1) and (2) show, delay time and supply voltage have nothing to do, and avoid the impact of mains voltage variations on time delay; Change R
1, C
1, R
3and R
4in any one value, delay time t can be adjusted
1, change R
2, C
2, R
5and R
6in any one value can adjust delay time t
2, usually change R
1or R
3or R
4resistance adjustment t
1, change R
2or R
5or R
6resistance adjustment t
2.Secondly the analog voltage on capacitor is changed into the digital output signal of timer, be convenient to Control and improve job stability.
Below principle of work of the present invention is described in detail:
Automotive ignition moment, battery tension becomes very low, for the electronic equipment such as drive recorder, safe driving early-warning apparatus, navigating instrument of duty, this moment low-voltage show as moment power failure, there is the situation of operation irregularity when power supply recovers again.Solve moment power failure and have two kinds of methods: one is to electronic equipment power source large capacitor in parallel, but this method can be impacted and even damaged supply line.Another kind sets up delay circuit, and appropriate time just starts power supply after firing, avoids power supply to the device before ignition.This method is economical, safe, reliable and feasible.The present invention adopts second method, and as Fig. 2, controlled source refers to by igniting key position or whether inserts the power supply controlled, and controlled source does not refer to the power supply that do not exist all the time by key control, and out-put supply refers to the working power of vehicle electronic device.First discharge path and the second discharge path act on first timer and second timer respectively, and discharge path is connected under given conditions, and the capacitor rapid discharge of timer, for timer, time delay is ready again at once.First timer 1 delay time is greater than second timer 2.Arranging second timer 2 is the control objects killed engine after first closing vehicle electronic device for the ease of realization.The button of the second discharge path is first clicked before killing engine, charging is started again after the capacitor rapid discharge of second timer 2, second timer 2 enters delay state, electronic equipment power-off while button click and closing, and kills engine between second timer 2 time delay.Close electronic equipment and the time interval the longest between killing engine is determined by the delay time of second timer.First closing vehicle electronic device before flame-out is required by car electrics working specification, it also avoid the impact of surge pulse to vehicle electronic device.The digital signal that first timer 1 and second timer 2 export inputs to and door, only when they all terminate delay stage, just exports high level with door, triode saturation conduction, and the relay coil energising closing of contact, for vehicle electronic device is powered; When first timer 1 and second timer 2 do not terminate delay stage entirely, vehicle electronic device is closed.
Based on above controller, the present invention proposes a kind of control method of this controller, and see Fig. 1, this control method comprises following several control mode:
1) control procedure of generally complete specifications
Initial state: engine and vehicle electronic device all do not work
Final state: engine and vehicle electronic device all do not work
(1) insert automobile key and rotate to ON position (connection electric switch), described first timer 1 and second timer 2 trigger, automobile enters self-inspection state and continues 3 ~ 5S simultaneously;
(2) self-inspection terminates rear key and goes to START position (igniting), engine start;
(3) through certain hour, until the time delay of described first timer 1 terminates, described vehicle electronic device Auto Power On and closedown controller start power to vehicle electronic device and keep always automatically, and so far engine and vehicle electronic device transfer duty to by off position;
(4) click the button of the second discharge path, described vehicle electronic device Auto Power On and closedown controller cut off vehicle electronic device power supply, and vehicle electronic device is closed;
(5) between second timer time delay, automobile key goes to OFF position (stopping working), tail-off.
2) kill engine and car electronic equipment control procedure simultaneously
Initial state: engine and vehicle electronic device all work
Final state: engine and vehicle electronic device all do not work
Under the condition that engine and vehicle electronic device all work, automobile key goes to OFF position (directly stopping working), tail-off.Vehicle electronic device Auto Power On and closedown controller close vehicle electronic device simultaneously.
3) engine accident extinguishing restarts control procedure
Initial state: engine does not work, vehicle electronic device work
Final state: engine and vehicle electronic device all work
(1) key goes to START position (igniting) from ON position, engine start.Meanwhile, vehicle electronic device Auto Power On and closedown controller close vehicle electronic device;
(2) through certain hour, until first timer (1) time delay terminates, described vehicle electronic device Auto Power On and closedown controller are automatically powered to vehicle electronic device and are kept always.
4) first timer time delay terminates the control procedure of rear starting engine
Initial state: engine does not work, vehicle electronic device work
Final state: engine and vehicle electronic device all work
(1) key goes to START position (igniting) from ON position, engine start.Meanwhile, vehicle electronic device Auto Power On and closedown controller close vehicle electronic device;
(2) through certain hour, until first timer (1) time delay terminates, described vehicle electronic device Auto Power On and closedown controller are automatically powered to vehicle electronic device and are kept always.
5) without the control procedure of the direct starting engine of self-inspection
Initial state: engine and vehicle electronic device all do not work
Final state: engine and vehicle electronic device all work
(1) insert automobile key and directly go to START position (direct-fire), engine start.Meanwhile first timer (1) and second timer (2) trigger;
(2) through certain hour, until first timer (1) time delay terminates, described vehicle electronic device Auto Power On and closedown controller are automatically powered to vehicle electronic device and are kept always.
Claims (10)
1. vehicle electronic device Auto Power On and a closedown controller, is characterized in that, comprise the first discharge path, the second discharge path, first timer, second timer, with door, triode and relay; Described first discharge path and the second discharge path are connected to first timer and second timer respectively; The output signal of described first timer and second timer inputs to and door; The described base stage being connected to triode with the output terminal of door; The collector of described triode is connected to the coil of relay; The contact of described relay is connected to uncontrolled power supply or between controlled source and out-put supply, described out-put supply is vehicle electronic device working power; The delay time of described first timer (1) is greater than the delay time of second timer (2).
2. vehicle electronic device Auto Power On according to claim 1 and closedown controller, is characterized in that, described first discharge path and the second discharge path are capacitor rapid discharge path.
3. vehicle electronic device Auto Power On according to claim 2 and closedown controller, is characterized in that, described first discharge path is made up of control circuit and discharge channel, and the second discharge path is composed in series by resistance and button.
4. vehicle electronic device Auto Power On according to claim 1 and closedown controller, is characterized in that, described first timer and second timer form by RC timing circuit, resistor voltage divider circuit and operational amplifier; The in-phase input end of described operational amplifier connects RC timing circuit, and inverting input contact resistance bleeder circuit, output terminal is connected to and door.
5. vehicle electronic device Auto Power On according to claim 4 and closedown controller, is characterized in that, described RC timing circuit is composed in series by timing resistor R and timing capacitor C, produces the voltage changed with the duration of charging.
6. vehicle electronic device Auto Power On according to claim 4 and closedown controller, is characterized in that, described resistor voltage divider circuit is made up of two resistant series, produces the reference voltage that operational amplifier compares.
7. vehicle electronic device Auto Power On according to claim 1 and closedown controller, is characterized in that, the power input of described first timer and second timer is connected to controlled source.
8. vehicle electronic device Auto Power On according to claim 1 and closedown controller, it is characterized in that, in described first discharge path, control circuit is connected to the control end of controlled source and discharge channel, and other connecting terminals of discharge channel are connected to the time capacitor positive pole of controlled source and first timer; The time capacitor of the second discharge path and second timer is in parallel.
9. vehicle electronic device Auto Power On according to claim 1 and closedown controller, is characterized in that, described vehicle electronic device is drive recorder, safe driving early-warning apparatus, navigating instrument.
10. the control method of Auto Power On and closedown controller according to claim 1-9 any one, is characterized in that, comprise following several control mode:
1) control procedure of complete specifications under normal circumstances
Initial state: engine and vehicle electronic device all do not work
Final state: engine and vehicle electronic device all do not work
(1) insert automobile key and rotate to ON position, first timer (1) and second timer (2) trigger, automobile enters self-inspection state and continues 3 ~ 5S simultaneously;
(2) self-inspection terminates rear key and goes to START position, engine start;
(3) when described first timer (1) time delay terminates, described vehicle electronic device Auto Power On and closedown controller start power to vehicle electronic device and keep always, and so far engine and vehicle electronic device transfer duty to by off position;
(4) click the button of the second discharge path, described vehicle electronic device Auto Power On and closedown controller cut off vehicle electronic device power supply, and vehicle electronic device is closed;
(5) between second timer time delay, automobile key goes to OFF position, tail-off;
2) kill engine and car electronic equipment control procedure simultaneously
Initial state: engine and vehicle electronic device all work
Final state: engine and vehicle electronic device all do not work
Under the condition that engine and vehicle electronic device all work, automobile key goes to OFF position, tail-off; Vehicle electronic device Auto Power On and closedown controller close vehicle electronic device simultaneously;
3) engine accident extinguishing restarts control procedure
Initial state: engine does not work, vehicle electronic device work
Final state: engine and vehicle electronic device all work
(1) key goes to START position from ON position, engine start; Meanwhile, vehicle electronic device Auto Power On and closedown controller close vehicle electronic device;
(2) when first timer (1) time delay terminates, described vehicle electronic device Auto Power On and closedown controller are powered to vehicle electronic device and are kept always;
4) first timer time delay terminates the control procedure of rear starting engine
Initial state: engine does not work, vehicle electronic device work
Final state: engine and vehicle electronic device all work
(1) key goes to START position from ON position, engine start; Meanwhile, described vehicle electronic device Auto Power On and closedown controller close vehicle electronic device;
(2) when described first timer (1) time delay terminates, described vehicle electronic device Auto Power On and closedown controller are automatically powered to vehicle electronic device and are kept always;
5) without the control procedure of the direct starting engine of self-inspection
Initial state: engine and vehicle electronic device all do not work
Final state: engine and vehicle electronic device all work
(1) insert automobile key and directly go to START position, engine start; Meanwhile, described first timer (1) and second timer (2) trigger;
(2) when described first timer (1) time delay terminates, described vehicle electronic device Auto Power On and closedown controller are powered to vehicle electronic device and are kept always.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310237726.2A CN103336453B (en) | 2013-06-14 | 2013-06-14 | Auto power-on and power-off controller of vehicle-mounted electronic equipment and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310237726.2A CN103336453B (en) | 2013-06-14 | 2013-06-14 | Auto power-on and power-off controller of vehicle-mounted electronic equipment and control method thereof |
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| CN103336453A CN103336453A (en) | 2013-10-02 |
| CN103336453B true CN103336453B (en) | 2015-07-15 |
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|---|---|---|---|
| CN201310237726.2A Expired - Fee Related CN103336453B (en) | 2013-06-14 | 2013-06-14 | Auto power-on and power-off controller of vehicle-mounted electronic equipment and control method thereof |
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| CN109215163A (en) * | 2017-07-04 | 2019-01-15 | 百度在线网络技术（北京）有限公司 | Travelling data acquires equipment and travelling data acquisition methods |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5912534A (en) * | 1996-03-18 | 1999-06-15 | Autosmart Light Switches, Inc. | Double relay light switching system for providing daytime running lights for vehicles |
| CN2866245Y (en) * | 2005-02-25 | 2007-02-07 | 薛祥 | Intelligent vehicle lamp light controller |
| JP2012091675A (en) * | 2010-10-27 | 2012-05-17 | Autonetworks Technologies Ltd | Control device of body functional component |
| CN203305935U (en) * | 2013-06-14 | 2013-11-27 | 长安大学 | Automatic power-on and power-off controller of vehicle electronic equipment |
-
2013
- 2013-06-14 CN CN201310237726.2A patent/CN103336453B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5912534A (en) * | 1996-03-18 | 1999-06-15 | Autosmart Light Switches, Inc. | Double relay light switching system for providing daytime running lights for vehicles |
| CN2866245Y (en) * | 2005-02-25 | 2007-02-07 | 薛祥 | Intelligent vehicle lamp light controller |
| JP2012091675A (en) * | 2010-10-27 | 2012-05-17 | Autonetworks Technologies Ltd | Control device of body functional component |
| CN203305935U (en) * | 2013-06-14 | 2013-11-27 | 长安大学 | Automatic power-on and power-off controller of vehicle electronic equipment |
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