WO2003075034A1 - Microwave track circuit - Google Patents
Microwave track circuit Download PDFInfo
- Publication number
- WO2003075034A1 WO2003075034A1 PCT/PL2003/000015 PL0300015W WO03075034A1 WO 2003075034 A1 WO2003075034 A1 WO 2003075034A1 PL 0300015 W PL0300015 W PL 0300015W WO 03075034 A1 WO03075034 A1 WO 03075034A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- receiver
- output
- microwave
- signal generator
- generator
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/03—Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
- G01S7/032—Constructional details for solid-state radar subsystems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/04—Systems determining presence of a target
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/50—Systems of measurement based on relative movement of target
- G01S13/52—Discriminating between fixed and moving objects or between objects moving at different speeds
- G01S13/56—Discriminating between fixed and moving objects or between objects moving at different speeds for presence detection
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/886—Radar or analogous systems specially adapted for specific applications for alarm systems
Definitions
- the receiver's synchronization block has an output, connected through another output to a icroprocessor mod ule, which is connected through additional switches with a radio transmission module of the transmission block, and with a wave-guide transmission mod ule of the transmission block.
- the receiver 's synchronization block has an output, connected th rough another switch of the receiver with the receiver 's microprocessor mod ule, which is connected through additional recerver's switches to the receiver's radio transmission mod ule of the icceivei's transmission block, and with the receiver's wave-guide transmission module of the receiver's transmission block.
- control of the receiver's H/V polarization switch is made through the synchronization block, after disconnecting the receiver's W switch, which connects the DM' demultiplexer input with the receiver's V connecting terminal through the receiver's W switch.
- the receiver's H/V polarization switch allows rapid changes of the beam polarization and its analysis, which constit utes an additional alarm criterion.
Abstract
The microwave track circuit has a transmitter and a receiver of microwave signal, containing the usable signal generator (UG) of the transmitter and the receiver (UG'). The transmitter's microwave generator (g) has an output connected to the wave-guide (F), on the other end of which is installed the lens (S). The receiver has the receiver's lens (S') installed on the end of the receiver's wave guide (F'), the other end of which is connected to the microwave generator (G') of the receivers usable signal system (UG'). The usable signal generator (UG) system contains modulator (M) , working in the AM/FM standard, the output of which is connected to the microwave generator (G), and the input of which is connected to the second input of the (L) connecting terminal. This system (UG) is equipped with the (ARW) system of automatic amplification adjustment, connected to the control socket of the (L) connecting terminal. This system (UG) is equipped with the (AWR) system of automatic amplification adjustment, connected to the control socket of the (L) connecting terminal, and constitutes the feedback loop of the (G) microwave genertor, and is equipped with the (H/V) polarization switch, which is connected with the (M) modulator, and the output of which is connected to the microwave generator (G).
Description
Mioiowave tiack circuit
The object of the invention is a microwave track circuit used especially for protection of buildings of utility.
Known is a microwave track circuit generated by a microwave transmitter, and at the end of the ciicuit is located a microwave receiver. The tiansmittcr contains a microwave generator, the signal of which has the form of impulses, and it is equipped with a frequency selector switch for the wave to be transmitted. The generator is connected, through a switch, with a synchronization system. Λt the generator's output is installed a parabolic antenna. The receiver has a parabolic antenna connected to a microwave generator equipped with a frequency selector switch. The miciowave track ciicuit is equipped with an anti- sabotage system, including shock and pressure sensors. In t he case of sabotage activities, consisting in attempts to break the receiver or the transmitter or to open them, the anti-sabotage system generates an alarm signal.
A known microw ave hack circuit uses Doppler's effect for the analysis of the alarrn signal. The amplitude of received signals and their phase are analyzed. Amplitude changes determine the object's size, and the phase difference allows determination of its speed.
The antenna used in a known track microwave ciicuit allows a potential aggressor an easy determination of the microwave track cncuit's detection area, and when he crosses it through with the speed lower than 03 ui per sec. he is uπdetectable.
The essence of the invention consists in that the generator's system of the usable signal of the trεursmitter is equipped with the transmitter's microwave generator, the output of which is connected to a wave-guide, which - at the other end - is equipped with a lens. The receiver is equipped with the receiver's lens installed at the e.ic] of the receiver's wave-guide, the
ot her cwd of which is connected to the microwave generator of the usable signal leccivei 's system.
The system of t he usable signal generator has a modulator, working in t he AM/ l-'IVl standai d. the output of which is connected to with the microwave generator, and the input of which is connected to the other input of t he connecting terminal. The system of the usable signal generator is equipped with a system of automatic amplification adjustment connected to the connecting term trial's control output, and has a polarization switch, which is connected with the modulator, and the output of which is connected to the microwave generator. The system of the usable signal generator, equipped with the receiver has a receiver demodulator, working in the AM/ F standard, the output of which is connected, through a demultiplexer, with a system of elements of the alara criterion parameters' adjustment, the output of which is connected to the other connecting terminal of the receiver. The system of the usable signal generator is equipped with a system of automatic amplification adjustment of the receiver, connected to the control socket of the receiver's connecting terminal, and it constitutes the feedback loop of the receiver's microwave generator, and has a polarization switch of the receiver, connected to the demodulator, and the output of which is connected to the receiver's microwave genera tor.
The transmitter is equipped with a synchronization block, which has a multiplexer, connected to a synchronization signal generator. The multiplexer has an input, connected to the connecting terminal, and another input, connected to a polarization switch. The synchronization signal generator has an output, connected to a polarization switch. The receiver is equipped with the receiver's synchronization block, which has a demultiplexer, connected at the input with the receiver's synchronization signal generator. The demultiplexer has an input, connected through the receiver's switch with the receiver's connecting terminal, and another cont l input connected to the receiver's polarization switch. The receiver's synchronizatio signal geneiator has an output connected to the receiver's
polarization switch. The receiver's synchronization block has an output, connected through another output to a icroprocessor mod ule, which is connected through additional switches with a radio transmission module of the transmission block, and with a wave-guide transmission mod ule of the transmission block. The receiver 's synchronization block has an output, connected th rough another switch of the receiver with the receiver 's microprocessor mod ule, which is connected through additional recerver's switches to the receiver's radio transmission mod ule of the icceivei's transmission block, and with the receiver's wave-guide transmission module of the receiver's transmission block.
The microwave track circuit based on the invention is difficult to be detected by an aggressor because of the lack of an antenna, and due to the fact that even his passage with a speed of 0.05 m per sec. would already be registered.
The object of the invention is presented on an example drawing, on which fig. 1 represents the block diagram of the microwave circuit transmitter for peripheral protection, and fig. 2 - the block diagram of the microwave track circuit receiver for peripheral protection.
The tiansmittcr has a system of the UG usable signal generator, the input of wh ich is connected to the control output of the connecting terminal L and the output is connected to the UF shaping and emission system of the microwave beam. To the oilier output of the L connecting terminal is connected the C1.C2 system of sensors, which constitutes the UA anti- sabotage s stem. The Cl .C2 system of sensors contains a shock sensor and a pressure sensor. The UF shaping and emission system of the microwave beam has, at its output, the F wave-guide, which, on the other side, has the S lens. The system of the UG usable signal generator has the G microwave generator of frequencies in the πuige of 9.5 - 10.5 GHz, the input of which is connected to the output of the modulator, working in the AM/ FM standard, which makes part of the UG usable signal generator. The output of the G microwave generator is connected to the UF shapuig and emission system of the microwave beam. The G microwave generator is connected to
the ARW system of automatic amplification adjustment, which is connected to the output of the connecting terminal L. The M modulator has an input connected to another output of the connecting terminal L through the W switch. The system of the U_G usable signal generator has the I l/ V switch of the polarization beam. To its two inputs are being sent synchronization impulses from the ML1 multiplexer and from the GIS synchronization impulses generator, wh ich are interconnected, and which constitute the BS synchroniz- ation block. The second output of the MU multiplexer is connected to the M modulator of the UG usable signal generator. The MU multiplexer output is connected, through the W switch to the output of the synchronization connecting terminal L. The BS synchronization block is connected to the pP microprocessor mod ule, which is connected to the BT transmission block, which contains the MTR radio transmission module, and the MI'S' wave-guide transmission module. The transmitter is equipped with the Z power pack, and with the LED block of luminous signaling devices, composed of photodiodes.
The analogue signal in the transmitter is generated continuously, and modulated in the AM/ FM standard. For systems, using single hack circuits, modulation parameters are set as fixed through the input socket of the L connecting terminal, and the M modulator is controlled fro the BS synchronization block output. In the case of big systems, which have many tracks, the switch is included, which connects the M modulator with track circuits, which work in parallel in the network. The ARW system allows maintenance of the output signal on a constant level, which mεikes possible the power density analysis of the output signal. The H/V switch of the polarization beam is controlled from the BS synchronization block output, and it constitutes an additional criterion for false signals prevention. The microwave signal from the G generator is shaped on the F wave-guide, and concentrated by the S lens, which gives a coherent beam at the output. This allows elimination of parabolic antennae, wh ich are easily identifiable by potential aggressors. The synchronization block is used in systems of microwave circuits,
Inch change the direct ion of their action, aud therefore
are prone to interferences caused by overlapping of microwaves beams, and which are subject to full management. The p microprocessor mod ule is used only when it is necessary to control the synchronization of ind ivid ual tracks in the system or to manage t he transmission track, and in the case of dynamic changes in the beam polarization, and when the analysis of the signal envelope is applied, which is made t hrough the BS control block. The transmission block, managed by the \\P microprocessor module allows full communication with the superord inatc management system. The LED block of luminous signaling devices indicates presence of the supply voitage and the synchronization signal, and allows coarse and fine setting of the beam parameters during the tuning and during servicing activities. In the case of sabotage activities, consisting of attempts to break the receiver or the transmitter or to open them, the anti-sabotage system generates, through the A anti-sabotage system sensors, a signal, which is inputted to the L connecting terminal.
A coherent microwave beam, after leaving tire S lens of the transmitter, enters the *S_lens of the receiver, and after passing through the F' wave- guide, enters the G' microwave usable signal generator of the receiver. The (A microwave generator of the receiver is connected to the M demodulator, working in the AM/ FM standard, from where the usable signal is sent, tli rough the DM multiplexer to the APD system of elements of the alarm criterion pai amcters' adjustment, which is connected to the otlier connecting terminal of the L3 receiver. The DM multiplexer is connected to the receiver's IX connecting terminal. This terminal block is equipped with two AL1 and ΛL2 relays. The system of the UG' usable signal generator receiver's is equipped with the ARW receiver's system of automatic amplification adjustment, which is connected to the control input of the receiver V connecting terminal, and constitutes the feedback loop of the G_' receiver's microwave generator. The ARW system of automatic amplification adjustment allows precise tuning of the circuit at the assumed level. The tuning is made through an adjustment element in the transmitter's L connecting terminal. The receiver's system of the G' usable signal
generator, containing the G_' receiver's microwave generator, t he M_' demodulator, and the ΛRW' receiver's system oϊ automatic amplification adjustment is equipped with the receiver's H/ V switch of the polarization, the output of which is connected to the receiver's G_' microwave generator, and is connected to the DM multiplexer input, to the output of the receiver's GIS' synchronization impulses generator, and to the M' demo ulator. For systems, which do not require synchronized work, and a high level of security, the signal polarization is pcrmtuiently fixed. I n the case of synchronized work, control of the receiver's H/V polarization switch is made through the synchronization block, after disconnecting the receiver's W switch, which connects the DM' demultiplexer input with the receiver's V connecting terminal through the receiver's W switch. The receiver's H/V polarization switch allows rapid changes of the beam polarization and its analysis, which constit utes an additional alarm criterion.
Demodulation parameters, in the case of system using single tracks circuits arc fixed permanently through tire socket of the transmitter's L connecting terminal, and the M' demodulator is controlled from the output of the receiver's BS' synchronization block. In the case of big systems, which require synchronized work, the receiver's W_' switch, which connects the M' with tracks circuits, w Inch work in parallel in the network.
Parameters for the alami criteria are set on the A, P, and D adjustment elements of the ΛPD system of elements of the alarm criterion parameters' adjustment. A change of the A parameter causes changes of the amplitude value, and influences mainly the alarm criterion associated with the beam width and its interruption by an object. A change of the P parameter causes the track circuit to be tuned for the assumed signal phase. The D parameter is adjusted on inputting the criterion, which confirms approach to the detection zone on the base of the Doppler's effect. The signal on the ALJ relay appears when the beam is interrupted by the appearing intruder, and the signal on t he AL 1 relay appears when he approaches the track circuit.
The receiver's BS_' synchronization block is connected, through another W2' switch of the receiver with the receiver's p_P' microprocessor mod ule,
which is connected to the receiver's BT' transmission block, which contains the receiver's MTR' radio transmission module and the receiver's MTS' waveguide transmission module. The receiver is equipped with the X_ powder pack, and with the LED' block of luminous signaling devices. The receiver's L_' connecting terminal is connected to the UA' an ti- sabotage receiver, consisting of Cl', C2' shock and pressure sensors, which prevent the receiver's or transmitter's removal or opening.
Claims
1. The microw ave t i ack ciicuit, wh ich on the one end has a microwave signal generator, including a generator of a usable microwave signal, and on the other end a receiver wit h a microwave gener ator is characterized in that the trsable signal generator (UG) of the transmitter is equipped with the transmitter's microwave generator (G), the output of which is connected to the wave-gurde (F), which at the other end has installed a lens (S), and the receiver is equipped with t he receiver's lens (Sj, installed at the end of the receiver's wave-guide (F"), the other end of which is connected to tire microwave generator (G ) of the usable signal generator (UG^ system.
2. The microwave track circuit, according to the claim 1, is characterized in that the usable signal generator (UG) contains the modulator (M), working in the AM/ FM standard, the output of which is connected to the microwave generator (G), and the input of which is connected to the second input of the (t) connecting terminal, and the usable signal generator (UG) system is equipped with the (ARW) system of automatic amplification adjustment, which is connected to the output of the (L) con necting terminal, and constitutes the feedback loop of the (GQ microwave generator, and is equipped with the (H/V) polarization switch, which is connected with the (M) modulator, and the output of which is connected to the microwave generator (G), and the usable signal generator (UG^ system, w hich includes the receiver's microwave generator (G), is equipped with the demodulator ( ), working in the AM/ FM standard, the output of which is connected, through the (DM) demultiplexer, to the (APD) system of elements of the alarm criterion parameters' adjustment, tlie output of which is connected to the receiver's second (L2_} connecting terminal, and the usable signal generator (UGJ system is equipped with the (ARW) system of automatic amplification adjustment, connected to the control socket of the receiver's (jJ) connecting terminal, and constit utes tlie receiver's feedback
loop of the (GJ microwave generator, and is equipped wit h the receiver 's (H/ V) polarization switch, wh ich is connected wit h t he (JVF) demodulator, and the output of which is connected to the receiver's microwave generator
(Gj-
3. Tlie microwave track circuit, according to the claim 1 , is characterized in that the (BS) synchron ization block, wh ich contains the (MU) multiplexer, connected with the (GtS) synchronization signal generator, and the (MU) mult iplexer's output is con nected to the (Lj) connecting terminal, and the multiplexer- (MU) has its one output connected to the modulator (M), and its second output is connected to the (H/V) polarization switch, and the (GIS) synchronization signal generator's output is connected to the (H/V) polarization switch, and tlie receiver is equipped with the receiver's (BS') synchronization block, which the (DM) demultiplexer, connected on the output with die receiver's (GISJ synchronization signal generator, and the (DM) demultiplexer's output is connected, through the receiver's switch (W), with the receiver's (LJ) connecting terminal, and the (DM) demiiltiplexer's one control output is connected to the (IVF) modulator, and the second control output is connected to tl e receiver's (H/V) polarization switch, and an output of the receiver's (GIS synchronization signal generator is con nected to the receiver's (H/V) polarization switch.
4. The microwave track circuit, according to the clai 1, is characterized in that an output of the (BS) synchronization block is connected, through another switch (W3) wit tl e JIP microprocessor module, which is connected, through additional switches (WD), with the radio transmission module (RX/TX) of the transmission block (BT), and with the optical wave-guide transmission module (MTS) of the transmission block (BT), and an output of the receiver's synchronization block (BSQ is connected, through the receiver's second switch (W21. with tlie receiver's microprocessor module (iiPJ, which is connected, through the receiver's additional switches (WD.'), with the with the receiver's radio t iansmission module (RX/TX') of the receiver's transmission block (B ) , and with the
1.0 receiver's optical wave-guide transmission module (MTS1 of the receiver's transmission block (BT .
synchronization signal generator (G1S), and the multiplexer (MU) has its output connected to the (L) connecting terminal. The multiplexer (MU) has its one output connected to the modulator (M), and the second output is connected to the (H/ V) polarization switch. The synchronization signal generator (GIS) has its one output connected to the (H/V) polarization switch, and the receiver's synchronization block (BS1) contains the demultiplexer (DM), connected, at the output, to synchronization signal generator (GIST the demultiplexer (DM) has its one output connected, through tlie receiver's switch (W) to tlie receiver's (jJ) connecting terminal, and has its one control output connected to the demodulator {WV}, and has its second control output connected to the receiver's (H/V) polarization switch. The receiver's synchronization signal generator (G-LSJ has its output connected to the receiver's (H/ V) polarization switch.
Fig. 1; fig. 2 4 claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2003217083A AU2003217083A1 (en) | 2002-03-01 | 2003-02-21 | Microwave track circuit |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PLP-352570 | 2002-03-01 | ||
| PL02352570A PL352570A1 (en) | 2002-03-01 | 2002-03-01 | Microwave link |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2003075034A1 true WO2003075034A1 (en) | 2003-09-12 |
| WO2003075034B1 WO2003075034B1 (en) | 2004-04-29 |
Family
ID=27786558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/PL2003/000015 WO2003075034A1 (en) | 2002-03-01 | 2003-02-21 | Microwave track circuit |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU2003217083A1 (en) |
| PL (1) | PL352570A1 (en) |
| WO (1) | WO2003075034A1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5481268A (en) * | 1994-07-20 | 1996-01-02 | Rockwell International Corporation | Doppler radar system for automotive vehicles |
| WO1997002496A1 (en) * | 1995-07-01 | 1997-01-23 | Robert Bosch Gmbh | Monostatic fmcw radar sensor |
-
2002
- 2002-03-01 PL PL02352570A patent/PL352570A1/en not_active Application Discontinuation
-
2003
- 2003-02-21 AU AU2003217083A patent/AU2003217083A1/en not_active Abandoned
- 2003-02-21 WO PCT/PL2003/000015 patent/WO2003075034A1/en not_active Application Discontinuation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5481268A (en) * | 1994-07-20 | 1996-01-02 | Rockwell International Corporation | Doppler radar system for automotive vehicles |
| WO1997002496A1 (en) * | 1995-07-01 | 1997-01-23 | Robert Bosch Gmbh | Monostatic fmcw radar sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| PL352570A1 (en) | 2003-09-08 |
| AU2003217083A1 (en) | 2003-09-16 |
| WO2003075034B1 (en) | 2004-04-29 |
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