CN1158203C - Anti-theft alarm for vehicle and its signal processing method - Google Patents
Anti-theft alarm for vehicle and its signal processing method Download PDFInfo
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- CN1158203C CN1158203C CNB021144052A CN02114405A CN1158203C CN 1158203 C CN1158203 C CN 1158203C CN B021144052 A CNB021144052 A CN B021144052A CN 02114405 A CN02114405 A CN 02114405A CN 1158203 C CN1158203 C CN 1158203C
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Abstract
The present invention discloses an anti-theft alarm for vehicles with automatic radio detection signals, and a signal processing method thereof. The anti-theft alarm comprises a bidirectional cipher answer type radio transmitting and receiving anti-theft alarm and a portable remote controller. The anti-theft alarm for vehicles utilizes detection signals emitted by the anti-theft alarm to make the remote controller not only have a receiving effect of continuous watch of a radio receiving circuit but also have an intermittent power supply mode of the radio receiving circuit. Consequently, the problem that the service life of a battery of the remote controller is incompatible with the effect of received radio signals is solved; the alarm reliability of the remote controller is obviously enhanced.
Description
One, technical field
The present invention relates to a kind of antitheft alarm system, the vehicle anti-theft remote annunciator signal processing method that particularly a kind of employing radio that is applicable to that automobile, motor bike use is surveyed automatically.
Two, background technology
The car alarm of prior art manufacturing at present, comparatively general employing two-way radio remote control mode comprises, a remote controller, a burglar alarm.Its principle of work is: remote controller: be convenient to the car owner and carry, can send radio signal, control the mode of operation of vehicle-mounted burglar alarm, can also receive the radio alarm signal that the anti-theft alarm on the car sends; Burglar alarm: be used for installing onboard, burglar alarm is responsible for sending radio alarm signal, simultaneously, sends alarm sound.
But, the car alarm of prior art manufacturing exists following shortcoming: 1. remote controller receives the radio alarm signal close together that burglar alarm sends, it is very big that signal is blocked by building to influence, when exceeding effective range of receiving, the car owner does not often know, makes remote controller warning reliability very low.2. car is in when warning, when the car owner leaves car and particularly can't see vehicle, and no any demonstration main car of patrolling of buying car in installments on the remote controller.3. the robber removes burglar alarm just in case the sensor in the burglar alarm of avoiding silently installing on the car is cut off electric wire, and remote controller does not have any warning function.4. when car self made radiowarning malfunctioning for burglar alarm electric power system generation fault or burglar alarm generation fault, remote controller did not have the display alarm function yet.5. the supplying cell that is installed on the remote controller is short service life.
Three, summary of the invention
Partly exist the reason of defective to analyze according to above-mentioned prior art, except present burglar alarm does not have actv. range of receiving measuring ability, also have an important factor to be, the battery life that uses in the remote controller contradicts with the effect that remote controller receives radio signals.Owing to the burglar alarm of installing onboard, be under emissive power and provisions of the relevant regulations issued by the State restriction launch time, adopt the interrupted launch mode transmitted radio signal of pulse, under this condition, the radio signal acceptor circuit of remote controller should be operated in keeps under marquis's state continuously, it is maximum to receive the radio signal chance that burglar alarm sends on the car, its effect is best, particularly when distance is far away, because signal to noise ratio is little, disturbing influence is big, and its effect is the most obvious.But the remote controller that present car owner carries because volume is restricted, adopts powered battery No. seven usually, and capacity of cell is limited, and in use, the acceptor circuit power consumption of remote controller accounts for the overwhelming majority of whole remote controller.If make the acceptor circuit of remote controller adopt power supply continuously, keep marquis's mode continuously, then the service life of battery too short, only two, three day time just must be changed very uneconomical practicality.
Therefore, the burglar alarm of prior art has adopted and has given acceptor circuit discontinuous power supply mode in order to prolong the service life of battery, promptly is exactly to make the control of remote controller circuit produce recurrent pulse, and the acceptor circuit response impulse is powered and worked.But when car takes place when stolen, the acceptor circuit of remote controller is in the blink of pulse power supply, gather together the very of short duration radio alarm signal of the burglar alarm emission that receives on the car, the chance that receives is very limited, if receiving range is far away slightly, then reception obviously degenerates.
The burglar alarm of prior art when considering the time that transmits, is considered the user on the basis that can accept on the battery institute period of service of changing remote controller, just considers to design pulse power supply time and pulse power supply design at interval again.Purpose is more for the chance of remote controller reception, and the service life of battery is longer, and reduces the acceptor circuit working current as far as possible, under unavoidable situation, also will lose some receiving sensitivities.However, this pulse power supply that adopts in the design gathers together mode at present, when reality is used, if receiving range is far away slightly, particularly have around under the situation that building blocks, the reliability of its reception, warning still can not be satisfactory, and the battery of remote controller is not greatly improved service life yet.
One object of the present invention is, a kind of signal processing method of anti-theft alarm for vehicle is provided.
Another object of the present invention is, absorb the advantage of the car alarm of prior art, improve at the defective that exists, provide a kind of according to the signal processing method of anti-theft alarm for vehicle of the present invention and can make the anti-theft alarm for vehicle that remote controller receives, anti-theft alarm is reliable, range of receiving is big and have following function.
1. be used for the remote controller that the car owner carries, when the radio signal that the burglar alarm on receiving car sends exceeds efficient range, send voice prompt;
2. the car owner can be in the actv. range of receiving, and the flicker luminous signal that the luminotron that is provided with on the observation remote controller sends patrols car, learns the safe position of own car, and the car owner is felt more relieved;
3. if the robber occurs just in case the sensor in the burglar alarm avoiding silently installing on the car is cut off electric wire, when removing burglar alarm, the remote controller caution of can sounding;
4. when car self produces fault or burglar alarm for the burglar alarm electric power system to produce fault and make radiowarning malfunctioning, the remote controller caution of can sounding simultaneously;
5. the supplying cell that is installed on the remote controller is longer service life.
To achieve these goals, the technical solution used in the present invention is:
Be provided with two impulse devisers in the burglar alarm; Burglar alarm produces pulse and detectable signal by an impulse deviser when being in warning, a coded transmitter responds this pulse, periodically to aerial transmitting radio detectable signal; After the acceptor circuit of remote controller receives coding radio detection signal, identify detectable signal, utilize this detectable signal to trigger a delay timer of remote controller, this delay timer is resetted and pick up counting, control acceptor circuit simultaneously and suspend power supply, when next one coding radio detection signal arrives at hand or just, restore electricity to acceptor circuit again after this delay timer delay arrival time, when acceptor circuit receives coding radio detection signal again, repeat said process, and constantly circulation;
When the acceptor circuit of remote controller identifies detectable signal, also utilize this detectable signal to trigger another delay time of remote controller setting greater than the detectable signal delay timer of period, this delay timer is resetted and begin reclocking, this delay timer output is detected signal and vises, a sounding control circuit and a phonation circuit controlled in the output of this delay timer simultaneously, makes it to quit work;
When the sensor of burglar alarm detects stolen signal, the delay timer that the sensor-triggered burglar alarm is provided with, go to control the impulse deviser break-off that produces detectable signal in the burglar alarm through a phase inverter that is provided with, the delay timer of control acceptor circuit power supply in the remote controller, after the delay arrival time, restore electricity, because of no detectable signal to acceptor circuit, the acceptor circuit of remote controller remains on continuous duty, keeps the arrival that the marquis the stolen signal of coding radio;
The delay timer of burglar alarm is controlled coded transmitter simultaneously through another impulse deviser, the stolen signal of transmitting radio, and the setting of the defer time of this delay timer is greater than the pulse period sum of two impulse devisers of burglar alarm;
After the acceptor circuit of remote controller is received the stolen signal of coding radio, identify stolen signal, go to control another sounding control circuit and phonation circuit work.
Described acceptor circuit also can be the receiver decoder that is made of jointly acceptor circuit and decoder.
According to above-mentioned signal processing method, first kind of technical scheme that the designed anti-theft alarm for vehicle of the present invention is taked is:
A kind of anti-theft alarm for vehicle that adopts the automatic detectable signal of radio comprises: two-way password is replied a burglar alarm and a portable remote controller of formula radio transmission and reception;
Be characterized in:
Burglar alarm comprises: a relay 21 and a constant voltage power suspply 22, and relay 21 is connected with driving circuit 25, a receiver decoder 17, receiver decoder 17 is connected with annunciator delay timer 20 with impulse deviser 15; One is used for the theft-proof sensor 18 of acquisition of signal, and theft-proof sensor 18 is connected with annunciator delay timer 20, and annunciator delay timer 20 connects with an impulse deviser 16 and be interconnected with phase inverter 19, and phase inverter 19 links to each other with another impulse deviser 15; Impulse deviser 15 and impulse deviser 16 and coded transmitter 14 interconnection;
Remote controller comprises: a receiver decoder 6, a mouth of receiver decoder 6 is connected with remote controller delay timer 5, remote controller delay timer 7 and control circuit 4 respectively by resistance R2, and with patrol car display circuit 9 and link to each other; Another mouth of receiver decoder 6 is connected with another remote controller delay timer 12, and remote controller delay timer 12 is connected with sounding control circuit 10; Receiver decoder 6 also is connected with switch circuit 11, and remote controller delay timer 5 links to each other with battery booster power 1 by switch circuit 11, and switch circuit 11 also links to each other with receiver decoder 6; Remote controller delay timer 7 links to each other with control circuit 4 with another sounding control circuit 8, and control circuit 4 is connected with instruction button 2, and instruction button 2 is connected with coded transmitter 3.
Anti-theft alarm for vehicle of the present invention adopts second kind of technical scheme to be:
A kind of anti-theft alarm for vehicle that adopts the automatic detectable signal of radio comprises: two-way password is replied a burglar alarm and a portable remote controller of formula radio transmission and reception;
Be characterized in:
Burglar alarm comprises: an annunciator micro controller system 24, a receiver decoder 17, coded transmitter 14, one drive circuit 25, are used for theft-proof sensor 18, a relay 21 and a constant voltage power suspply 22 of acquisition of signal;
Relay 21 is connected with driving circuit 25, driving circuit 25 also is connected with the mouth of annunciator micro controller system 24, receiver decoder 17 is connected with the input end of annunciator micro controller system 24 respectively with theft-proof sensor 18, and the mouth of annunciator micro controller system 24 is connected with driving circuit 25 with coded transmitter 14 respectively;
Remote controller comprises: a remote controller micro controller system 23, a switch circuit 11, a battery booster power 1, an instruction button 2, a coded transmitter 3, a receiver decoder 6, patrol a car display circuit 9 and a phonation circuit 13;
The input end of remote controller micro controller system 23 is connected with instruction button 2 receiver decoders 6 respectively, the mouth of remote controller micro controller system 23 connects phonation circuit 13 and switch circuit 11 respectively, switch circuit 11 is connected with battery booster power 1, the mouth of receiver decoder 6 also with patrol car display circuit 9 and be connected.
Anti-theft alarm for vehicle of the present invention adopts when burglar alarm is in warning, produce pulse and detectable signal by an impulse deviser, one coded transmitter respond this pulse period to aerial transmitting radio detectable signal, after the remote controller that the car owner carries receives coding radio detection signal, identify detectable signal, utilize this signal to go to control two delay timers and one again and patrol the car display circuit.Patrolling the car display circuit is under the control of detectable signal, and the luminotron flicker that drives on the remote controller is luminous, and the subjectivity of buying car in installments is examined and patrolled car.Detectable signal is delivered to one of them delay timer simultaneously, triggering this delay timer resets and picks up counting, the radio receiver circuit that goes to control the power consumption maximum is temporarily stopped power supply, when next detectable signal will arrive, delay timer restores electricity again then, makes acceptor circuit keep the marquis and the radio detection signal.Detectable signal suspends radio receiver circuit through delay timer again and temporarily stops power supply.Said process circulates when burglar alarm is in warning repeatedly.When car is stolen, after the sensor of burglar alarm detects, send alerting signal, go the clamp-pulse generator break-off, coded transmitter suspends launching code radio detection signal, and the remote controller that the car owner is carried does not receive detectable signal, and radio receiver circuit is resumed power supply, radio receiver circuit is operated in keeps under marquis's state continuously, goes to receive the coding radio alarm signal that the coded transmitter of burglar alarm sends again.Thereby the battery service life of remote controller and the conflicting problem of effect that receives radio signals have been solved effectively.
When above-mentioned detectable signal is in the state of alert at anti-theft alarm for vehicle of the present invention, also deliver to another delay timer of remote controller simultaneously, triggering this delay timer resets and trigger, because the delay time of this delay timer is greater than detectable signal period, so its outgoing level is detected semaphore lock.When the burglar alarm on the car quietly destroyed by the robber or car on burglar alarm self et out of order the time, burglar alarm can not send the radio detection signal again, the time that remote controller does not receive the radio detection signal is during greater than the delay time of this delay timer, the outgoing level counter-rotating of this delay timer, open the phonation circuit of remote controller simultaneously, the short sound that sends interruption is used for caution.When the car owner carries the car of remote controller away from oneself, when exceeding effective range of receiving, remote controller then sends same sound and informs the car owner.
Whether to send the radio detection signal relevant because whether the acceptor circuit work of above-mentioned remote controller is with burglar alarm, there are important dependence relation in battery service life in the remote controller and detectable signal cycle, and it is relevant that detectable signal cycle and burglar alarm detect time-delay stolen, that remote controller is reported to the police permission.During actual the use, remote controller is reported to the police need not be than long permission time-delay, and the time-out of radio receiver circuit is reasonable with the ratio of work-hours, and the battery problem in service life in the remote controller is further solved.Can not scruple the working current of radio receiver circuit, receiving sensitivity is accomplished optimum regime, the reception that makes the existing radio receiver circuit of remote controller keep the marquis continuously has good distant reception ability again.Thereby the battery that has solved remote controller contradicts problem with the effect that receives radio signals service life, makes remote controller warning reliability obviously improve.
Four, description of drawings
Fig. 1 is the circuit block diagram that the present invention uses the discrete component scheme, and a is the circuit block diagram of remote controller, and b is the circuit block diagram of burglar alarm;
Fig. 2 is the circuit diagram that the present invention uses the burglar alarm of discrete component scheme;
Fig. 3 is the circuit diagram that the present invention uses the remote controller of discrete component scheme;
Fig. 4 is the circuit block diagram that the present invention uses the micro controller system scheme, and a is the circuit block diagram of remote controller, and b is the circuit block diagram of burglar alarm;
Fig. 5 is the circuit diagram that the present invention uses the remote controller of micro controller system scheme;
Fig. 6 is the circuit diagram that the present invention uses the burglar alarm of micro controller system scheme.
Five, the specific embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
The contriver has provided following embodiment, but is not limited to these embodiment.
A kind of anti-theft alarm for vehicle that adopts the automatic detectable signal of radio comprises: two-way password is replied a burglar alarm and a portable remote controller of formula radio transmission and reception; Its signal processing method, carry out by the following method:
Be provided with two impulse devisers in the burglar alarm; Burglar alarm produces pulse and detectable signal by an impulse deviser when being in warning, a coded transmitter responds this pulse, periodically to aerial transmitting radio detectable signal; After the receiver decoder of remote controller receives coding radio detection signal, identify detectable signal, utilize this detectable signal to trigger a delay timer of remote controller, this delay timer is resetted and pick up counting, control receiver decoder simultaneously and suspend power supply, when next one coding radio detection signal arrives at hand or just, restore electricity to receiver decoder again after this delay timer delay arrival time, when receiver decoder receives coding radio detection signal again, repeat said process, and constantly circulation;
When the receiver decoder of remote controller identifies detectable signal, also utilize this detectable signal to trigger another delay time of remote controller setting greater than the detectable signal delay timer of period, this delay timer is resetted and begin reclocking, this delay timer output is detected signal and vises, a sounding control circuit and a phonation circuit controlled in the output of this delay timer simultaneously, makes it to quit work;
When the sensor of burglar alarm detects stolen signal, the delay timer that the sensor-triggered burglar alarm is provided with, go to control the impulse deviser break-off that produces detectable signal in the burglar alarm through a phase inverter that is provided with, the delay timer of control receiver decoder power supply in the remote controller, after the delay arrival time, restore electricity, because of no detectable signal to receiver decoder, the receiver decoder of remote controller remains on continuous duty, keeps the arrival that the marquis the stolen signal of coding radio;
The delay timer of burglar alarm is controlled coded transmitter simultaneously through another impulse deviser, the stolen signal of transmitting radio, and the setting of the defer time of this delay timer is greater than the pulse period sum of two impulse devisers of burglar alarm;
After the receiver decoder of remote controller is received the stolen signal of coding radio, identify stolen signal, go to control another sounding control circuit and phonation circuit work.
Embodiment 1: present embodiment is a kind of embodiment that adopts signal processing method of the present invention.
Referring to Fig. 1～3, a kind of anti-theft alarm for vehicle that adopts the automatic detectable signal of radio comprises: two-way password is replied a burglar alarm and a portable remote controller of formula radio transmission and reception;
Burglar alarm comprises: a relay 21 and a constant voltage power suspply 22, and relay 21 is connected with the collecting electrode of the aerotron BG4 of driving circuit 25, a receiver decoder 17, receiver decoder 17 is connected with annunciator delay timer 20 with impulse deviser 15; One is used for the theft-proof sensor 18 of acquisition of signal, and theft-proof sensor 18 is connected with annunciator delay timer 20, and annunciator delay timer 20 connects with an impulse deviser 16 and be interconnected with phase inverter 19, and phase inverter 19 links to each other with another impulse deviser 15; Impulse deviser 15 and impulse deviser 16 and coded transmitter 14 interconnection;
Remote controller comprises: a receiver decoder 6, a mouth of receiver decoder 6 are connected with remote controller delay timer 5, remote controller delay timer 7 and control circuit 4 respectively by resistance R 2, and with patrol car display circuit 9 and link to each other; Another mouth of receiver decoder 6 is connected with another delay timer 12, and remote controller delay timer 12 is connected with sounding control circuit 10; Remote controller delay timer 5 is by being linked to each other with the switch circuit 11 that aerotron BG1 forms by resistance R 1, and the emitter of aerotron BG1 links to each other with battery booster power 1, and the collecting electrode of aerotron BG1 links to each other with receiver decoder 6; Remote controller delay timer 7 links to each other with control circuit 4 with another sounding control circuit 8, and control circuit 4 is connected with instruction button 2, and instruction button 2 is connected with coded transmitter 3.
JDR receiver decoder 17 is commercially available radio reception decoding templates among the figure, one tunnel impulse deviser 15 through resistance R 9 connections 2 input end Schmidt trigger IC3, resistance R 6, R7, R8, capacitor C 3, diode D2, aerotron BG3 formation of its mouth.Another road connects the delay timer 20 of NAND gate IC1, not gate IC2, Schmidt trigger IC4, resistance R 1, R2, R3, capacitor C 1, aerotron BG1 formation.
Theft-proof sensor 18 is commercially available vibratioies sensor, and it connects the NAND gate IC1 of annunciator delay timer 20.The Schmidt trigger IC4 mouth one tunnel of annunciator delay timer 20 connects the impulse deviser 16 of 2 input end Schmidt trigger IC5, resistance R 4, R5, R11, capacitor C 2, diode D1, aerotron BG2 formation.Another road connects the phase inverter 19 that not gate IC6, diode D3 constitute.Also have one the tunnel to connect relay 21 through resistance R 10, aerotron BG4.One normally closed interlock of relay 21 connects the firing circuit in the car.12V power supply on the car connects the constant voltage power suspply 22 of three-terminal regulator block IC7, capacitor C 4, C5 formation.The diode D3 of phase inverter 19 is anodal to connect the input end of 2 input end Schmidt trigger IC3 of impulse deviser 15.The output of the aerotron BG3 of impulse deviser 15 and the aerotron B62 of impulse deviser 16 output connect FCT coded transmitter 14, and coded transmitter 14 is commercially available coding radio transmission templates.
JCR receiver decoder 6 among Fig. 3 is commercially available radio reception decoding templates, and wherein a mouth shows 9 through the car that patrols that R4 connects aerotron BG4, resistance R 4, R5, luminotron ED formation.Through resistance R 2, the one tunnel connects the delay timer 5 of Schmidt trigger IC1, resistance R 3, capacitor C 1, aerotron BG2 formation again.The Schmidt trigger IC1 of remote controller delay timer 5 output connects the base stage of aerotron BG1 through resistance R 1, the emitter power connection of aerotron BG1, and collecting electrode connects JCR receiver decoder 6.Another road connects the remote controller delay timer 7 that aerotron BG3, capacitor C 2, resistance R 11 and 2 input end Schmidt trigger IC4 control ends constitute.Schmidt trigger IC4, resistance R 12, R13, capacitor C 3, diode D4, D2 have constituted sounding control circuit 8.Another mouth of JCR receiver decoder 6 connects the remote controller delay timer 12 of resistance R 7, R8, aerotron BG5, capacitor C 4, Schmidt trigger IC5 formation.Schmidt trigger IC5 mouth connects the sounding control circuit 10 of 2 input end Schmidt trigger IC6, resistance R 9, R10, capacitor C 5, diode D5, D3 formation.Sounding control circuit 11 is connected the phonation circuit 13 of non-gate ic7,2 input end Schmidt trigger IC8, capacitor C 6, resistance R 14, R15, R16, R17, aerotron BG6, BG7 formation with 10 outputs of sounding control circuit.Phonation circuit 13 connects the news Chinese percussion instrument.Battery TD, inductance L, diode D4, capacitor C 7, the ic chip 11 that boosts have constituted the battery booster power.Button switch K1, K2 are instruction buttons 2, instruction button 2 connects FDT coded transmitter 3, connect the control circuit 4 of flip-flop multivibrator IC9, IC10 and resistance R 6, diode D1 formation again, the negative pole of the diode D1 of control circuit 4 connects the aerotron BG3 base stage of delay timer 5, aerotron BG2 base stage and delay timer 7.
Below in conjunction with Fig. 1, Fig. 2, Fig. 3 the working process of present embodiment is described.
The car owner holds the warning key K1 of remote controller by instruction button 2, and FDT coded transmitter 3 is immediately to aerial launching code radio communication guard signal.The JCR receiver decoder 17 of the burglar alarm of installing on the car, receive that this signal is after identification, confirming, the high level of the warning mouth output locking of setting, this high level is delivered to the control end of annunciator delay timer 20 and the input end of 2 input end Schmidt trigger IC1, and high level is delivered to the control end of impulse deviser 15 and the input end of 2 input end Schmidt trigger IC3 through resistance R 9 again.Burglar alarm begins to be in the state of alert, and impulse deviser 15 is started working, and the detectable signal input end of setting to FCT coded transmitter 14 in cycle sends positive pulse and detectable signal.Coded transmitter 14 response positive pulse work intermittently are to aerial launching code radio detection signal.
Receiver decoder 6 is received coding radio detection signal, treated at corresponding detectable signal mouth output positive pulse and detectable signal, this positive pulse is delivered to the BG2 base stage of remote controller delay timer 5 through R2, make the BG2 conducting, the C1 discharge, the IC1 input end is drawn to be low level, remote controller delay timer 5 resets, and output is reversed to high level, and high level arrives the BG1 base stage through R1, BG1 ends, receiver decoder 6 is stopped power supply, and electric current begins the charging to C1 through R3 simultaneously, and remote controller delay timer 5 picks up counting, when next detectable signal will arrive or just arrived, remote controller delay timer 5 delay arrival time, output is reversed to low level, and the BG1 conducting connects, receiver decoder 6 is started working again, meets next coding radio detection signal.When detectable signal arrives, positive pulse is simultaneously through the base stage of R4 to BG4, make the BG4 conducting, luminotron ED flash of light, said process circulation when warning renews, and has both realized that remote controller receives the good condition of radio detection signal when the marquis is kept in warning, realized the battery discontinuous power supply again, having prolonged the service life of battery and the subjectivity of buying car in installments, to examine luminotron glittering, reaches the purpose of patrolling car.Owing to good power supply mode, need not scruple the working current of receiving unit, receiving sensitivity can be adjusted to the best, receiving range is farther.
When detectable signal arrived, remote controller delay timer 7 also was reset and restarts timing simultaneously.Because the delay time that remote controller delay timer 7 sets is greater than the one-period of the impulse deviser 15 of burglar alarm, so it is high level that the output of remote controller delay timer 7 is detected semaphore lock, IC3 becomes low level through not gate, phonation circuit 11 is locked and do not work, and remote controller does not send the sound.When the burglar alarm of installing on the car is removed by the robber or reason such as self et out of order when losing efficacy, or, when the car owner carries remote controller and walks out effective range of receiving, after remote controller is not received the delay time of time greater than 7 settings of remote controller delay timer of detectable signal, the counter-rotating of remote controller delay timer 7 outgoing levels, IC3 becomes high level through not gate, high level is delivered to the control end of phonation circuit 11, the oscillator of the EDM Generator of Adjustable Duty Ratio of IC4, R12, R13, D4 formation is started working, and the negative going pulse in output cycle removes to open phonation circuit 13.Its process is: negative going pulse is through the drop-down non-gate ic7 input end of D2 level, become low level by high level, the IC7 mouth is reversed to positive pulse, positive pulse is delivered to the control end of 2 input end Schmidt trigger IC8, the audio frequency oscillator work that IC8, C6, R14 are constituted, sound signal promotes news Chinese percussion instrument HC sounding through BG6, BG7.Under the control of phonation circuit 11, news Chinese percussion instrument HC sends the relatively long short sound of gap periods, to realize caution and the purpose of informing.
When vehicle is stolen, after the theft-proof sensor 18 of burglar alarm detected, output positive pulse signal input annunciator delay timer 20 triggered IC1 and makes its output be reversed to low level, anti-phase through IC2 is high level, make the BG1 conducting, C1 is discharged, the IC4 input end by drop-down be low level, the IC4 mouth is reversed to high level, simultaneously electric current begins to capacitor C 1 charging through R3, and 20 outputs of annunciator delay timer are high level temporarily, at this and be decided to be stolen signal.This signal makes transistor BG4 conducting through R10, relay J adhesive, contact action, the firing circuit of cut-out car.This signal is anti-phase through phase inverter 19 and IC6 simultaneously to be low level, low level is through the drop-down 2 input end Schmidt trigger IC3 of diode D3 one input end, the control end that reaches impulse deviser 15 is a low level, impulse deviser 15 break-ofves, and coded transmitter FCT suspends the transmitting radio detectable signal.The receiver decoder 6 of remote controller can not receive the radio detection signal, the 5 time-delay back output counter-rotatings of remote controller delay timer temporarily are locked in low level, make transistor BG1 conducting, receiver decoder JCR is under the continuous duty, keeps the arrival that the marquis the stolen signal of radio.Because the stolen signal of burglar alarm is also delivered to the control end of 2 input end Schmidt trigger IC5 one input ends and impulse deviser 16 simultaneously, impulse deviser 16 is started working, to coded transmitter 14 accordingly to the stolen signal of aerial launching code radio.
Can receive the stolen signal of radio in order to ensure remote controller, delay timer 20 is triggered delay time by the theft-proof sensor 18 of burglar alarm at every turn, and annunciator delay timer 20 delay times should be added the one-period time of impulse deviser 16 greater than the 15 one-period times of impulse deviser.When the receiver decoder 6 of remote controller is received the stolen signal of coding radio, its corresponding stolen signal output part output positive pulse, positive pulse makes transistor BG5 conducting through resistance R 7, capacitor C 4 discharges, Schmidt trigger IC5 counter-rotating output high level, electric current begins the charging to C4 through resistance R 8, and 12 outputs of remote controller delay timer are high level temporarily.This high level input IC6 one input end, an and control end of sounding control circuit 10, sounding control circuit 10 is started working, the negative going pulse in output cycle, through diode D3, make the IC7 mouth be reversed to positive pulse, the news Chinese percussion instrument in this positive pulse control phonation circuit 13, make it send the relatively short rapid sound of gap periods, realized the radio telecommand anti-theft alarm.
When the car owner needs steered vehicle, press and remove key K2, high level is passed to IC10 one input end of control circuit 4 and flip-flop multivibrator through K2, the flip-flop multivibrator counter-rotating, the IC9 mouth is locked in high level, and high level makes transistor BG2, BG3 keep conducting through resistance R 6, diode D1, and IC1 exports high level, the BG1 remain off, receiver decoder JCR is stopped power supply.11 of phonation circuit be stopped work simultaneously, remote controller stops sounding.In by releasing key K2, coded transmitter FDT will encode the radio ring off signal to aerial emission.After the decoding receptor 17 of burglar alarm was received signal, its mouth counter-rotating was locked as low level.Impulse deviser 15, delay timer 20 is all locked quits work, and the theft-proof sensor ZT output of burglar alarm is invalid, and coded transmitter FDT quits work.Burglar alarm enters disarm state, and the car owner gets final product steering vehicle.Because when disarm state, do not use a teleswitch, the receiver decoder 6 of remote controller is stopped power supply, helps further extending battery life.
Embodiment 2: present embodiment is the another kind of embodiment that adopts signal processing method of the present invention.
Referring to Fig. 4～6, a kind of anti-theft alarm for vehicle that adopts the automatic detectable signal of radio comprises: two-way password is replied a burglar alarm and a portable remote controller of formula radio transmission and reception;
Burglar alarm comprises: an annunciator micro controller system 24, a receiver decoder 17, coded transmitter 1, one drive circuit 25, are used for theft-proof sensor 18, a relay 21 and a constant voltage power suspply 22 of acquisition of signal;
Relay 21 is connected with the collecting electrode of the aerotron BG4 of driving circuit 25, the base stage of the aerotron BG4 of driving circuit 25 is connected with the mouth of annunciator micro controller system 24, receiver decoder 17 is connected with the input end of micro controller system 24 respectively with theft-proof sensor 18, and the mouth of annunciator micro controller system 24 is connected with the base stage of the aerotron BG4 of coded transmitter 14 and driving circuit 25 respectively;
Remote controller comprises: a remote controller IC micro controller system 23, a switch circuit 11, a battery booster power 1, an instruction button 2, a coded transmitter 3, a receiver decoder 6, patrol car display circuit 9 and phonation circuit 13;
The mouth that the input end of remote controller IC micro controller system 23 is connected with instruction button 2 receiver decoders 6, remote controller IC micro controller system 23 respectively connects phonation circuit 13 and switch circuit 11 respectively, switch circuit 11 is connected with battery booster power 1, the mouth of receiver decoder 6 also with patrol car display circuit 9 and be connected.
Different is for present embodiment and embodiment 1, function and working process with the remote controller delay timer 5 of remote controller among the embodiment 1, remote controller delay timer 7, remote controller delay timer 12, control circuit 4, sounding control circuit 10, sounding control circuit 8 each several parts, go in remote controller micro controller system 23 shown in Figure 4 and the IC12 shown in Figure 5 by the programming programming, the circuit diagram by the remote controller that uses the micro controller system scheme inserts some other circuit again.
The detection of receiver decoder 6 and stolen signal output part are connected the input end of remote controller micro controller system 23 respectively, the warning of instruction key 2 and remove the input end that instruction output connects remote controller micro controller system 23.One mouth of remote controller micro controller system 23 is by the base stage of resistance R 1 connection aerotron BG1, and two other utmost point of aerotron BG1 is connected with receiver decoder 6 with battery booster power 1 respectively.Another mouth of remote controller micro controller system 23 is connected with phonation circuit 13.
Function and working process with the impulse deviser 15 of the burglar alarm among the embodiment 1, impulse deviser 16, delay timer 20, phase inverter 19 each several parts, go in micro controller system shown in Figure 4 24 and the IC13 shown in Figure 6 by the programming programming, the circuit diagram by the burglar alarm that uses the micro controller system scheme inserts some other circuit again.
The mouth of receiver decoder 17 connects an input end of micro controller system 24, and the mouth of theft-proof sensor 18 connects another input end of micro controller system 24, and the mouth of micro controller system 24 connects transistor BG4 base stage, transistor BG4 cut-in relay 21 by resistance R 10.Other two mouths of micro controller system 24 and detection are connected two input ends of coded transmitter 14 with stolen pulse output end.
Its remote controller micro controller system 23, annunciator micro controller system 24 select for use inside to have the function that all can finish present embodiment of some models of program store, as CF775, PICI6C57 etc.
The signal processing method of present embodiment, working process and result of use are all with embodiment 1.
Claims (1)
1. anti-theft alarm for vehicle signal processing method comprises: adopt the two-way password of the automatic detectable signal of radio to reply a burglar alarm and a portable remote controller of formula radio transmission and reception; Its signal conditioning is carried out by the following method:
Be provided with two impulse devisers in the burglar alarm; Burglar alarm produces pulse and detectable signal by an impulse deviser when being in warning, a coded transmitter responds this pulse, periodically to aerial transmitting radio detectable signal; After the acceptor circuit of remote controller receives coding radio detection signal, identify detectable signal, utilize this detectable signal to trigger a delay timer of remote controller, this delay timer is resetted and pick up counting, control acceptor circuit simultaneously and suspend power supply, when next one coding radio detection signal arrives at hand or just, restore electricity to acceptor circuit again after this delay timer delay arrival time, when acceptor circuit receives coding radio detection signal again, repeat said process, and constantly circulation;
When the acceptor circuit of remote controller identifies detectable signal, also utilize this detectable signal to trigger another delay time of remote controller setting greater than the detectable signal delay timer of period, this delay timer is resetted and begin reclocking, this delay timer output is detected signal and vises, a sounding control circuit and a phonation circuit controlled in the output of this delay timer simultaneously, makes it to quit work;
When the sensor of burglar alarm detects stolen signal, the delay timer that the sensor-triggered burglar alarm is provided with, go to control the impulse deviser break-off that produces detectable signal in the burglar alarm through a phase inverter that is provided with, the delay timer of control acceptor circuit power supply in the remote controller, after the delay arrival time, restore electricity, because of no detectable signal to acceptor circuit, the acceptor circuit of remote controller remains on continuous duty, keeps the arrival that the marquis the stolen signal of coding radio;
The delay timer of burglar alarm is controlled coded transmitter simultaneously through another impulse deviser, the stolen signal of transmitting radio, and the setting of the defer time of this delay timer is greater than the pulse period sum of two impulse devisers of burglar alarm;
After the acceptor circuit of remote controller is received the stolen signal of coding radio, identify stolen signal, go to control another sounding control circuit and phonation circuit work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021144052A CN1158203C (en) | 2002-01-08 | 2002-01-08 | Anti-theft alarm for vehicle and its signal processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021144052A CN1158203C (en) | 2002-01-08 | 2002-01-08 | Anti-theft alarm for vehicle and its signal processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1364708A CN1364708A (en) | 2002-08-21 |
| CN1158203C true CN1158203C (en) | 2004-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB021144052A Expired - Fee Related CN1158203C (en) | 2002-01-08 | 2002-01-08 | Anti-theft alarm for vehicle and its signal processing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101454789B (en) * | 2006-06-01 | 2012-05-23 | 纳格拉影像股份有限公司 | A security device meant to be connected to a processing unit for audio/video signal and method using such a device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101635065A (en) * | 2009-08-03 | 2010-01-27 | 田乃信 | Instruction for confirming delay of multigroup numerical codes |
| CN106991774B (en) * | 2017-05-17 | 2019-02-05 | 山东建筑大学 | A kind of anti-theft radio alarm |
-
2002
- 2002-01-08 CN CNB021144052A patent/CN1158203C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101454789B (en) * | 2006-06-01 | 2012-05-23 | 纳格拉影像股份有限公司 | A security device meant to be connected to a processing unit for audio/video signal and method using such a device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1364708A (en) | 2002-08-21 |
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