CN2288882Y

CN2288882Y - Theft-proof device with distinguishing function for motor-driven vehicle

Info

Publication number: CN2288882Y
Application number: CN96248838U
Authority: CN
Inventors: 李德
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-11-28
Filing date: 1996-11-28
Publication date: 1998-08-26
Anticipated expiration: 2006-11-28

Abstract

The utility model relates to a theft-proof device for a motor-driven vehicle additionally with the function of distinguishing, preventing stealing, preventing robbing, looking for the vehicle by light or sound and light, and seeking help, which is composed of a remote controller, a host machine and an alarm device. Based on the existing mainframe operating circuit comprising a demodulation and decoding part, a vibration-sensing signal amplification part, an anti-burglary setting part, a light signal generating part, and an alarm time delay part and other main parts, what the utility model is characterized in and what the problems are solved are that first, one side of the exterior edge of the base sheet of a piezoelectric sheet is provided with a long metal pole and is additionally provided with a noise eliminating circuit; second, the utility model is additionally provided with a circuit structure whose vehicle stealing mathematical model is K/T2, to solve the false alarm problem; third, a key time separation circuit is additionally arranged, to realize one-key with dual-purposes; fourth, the required flash signal generating circuit by the theft-proof device is a multivibrator.

Description

Motor vehicle antitheft device with identification function

The utility model relates to a kind of motor vehicle antitheft device, can make power actuated vehicle increase that remote control is thief-proof, counter robs and seek the car function.

In recent years, the common feature of the regional popular motor vehicle antitheft device of domestic and Hong Kong and Taiwan is: 1, the Car Burglar Alarm system forms by remote controller, main frame and annunciator are supporting, and main frame and annunciator are loaded on shelter in the self-propelled vehicle, with vehicle electrical link are arranged; 2, adopt advanced pairing numeral coding/decoding integrated circuit AX5326/5327 or like product, the repetition rate of coding is low; 3, remote controller is by code modulated very high frequency (VHF) radiowave main control system execution command function, and main frame adopts superregenerative detection circuit, paraphase amplifying element to demodulate code signal; 4, with piezoelectric ceramic piece as the Sensitive Apparatus of mechanical vibration wave (sense shake probe); 5, the function of Shi Xianing has: antitheft setting (immediately), seek car (sound), remote start, releasing.The weak point of this class Car Burglar Alarm is: A, under antitheft set condition, in a single day vehicle is subjected to percussion and promptly sends warning, so the false alarm rate height.Portioned product is taked to regulate and the method for the magnification factor of probe sensitive signal is regulated the annunciator sense is shaken sensitivity to reduce flase alarm, but whether be premeditated still accidental, therefore this sensitivity is regulated does not have practical significance to reducing flase alarm if can not differentiate that mechanicalness that vehicle suffers invades with the power of probe institute induced signal after all; B, sound wave also are vibration waves, and probe sensitive signal amplifying element is not taked braking measure to sound signal, and the strong noise of environment also can cause flase alarm.High from the false alarm rate of 2 visible these class Car Burglar Alarms of A, B, and the high Car Burglar Alarm of false alarm rate is no practical value; C, do not possess practical quiet (light) and seek the car function; D, do not possess the due optical flare signal of burglar alarm.

The purpose of this utility model provides a kind of remote control motor vehicle antitheft device, and it possesses two kinds of antitheft settings (set I (differentiating antitheft) and set II (antitheft immediately)), seeks car mode (quiet and acousto-optic is sought car) for two kinds, and anti-misfortune car, emergency function in danger are arranged.Whether belong to auto theft behavior automatic resolution capability arranged, and two kinds of antitheft setting suffered percussions of sense vehicle delicately if differentiating that antitheft setting is invaded the suffered mechanicalness of vehicle, even and can accurately get rid of the interference of any strong noise explosive sound of environment.The optical signal of reporting to the police and seeking during the car is a flash signal.

The purpose of this utility model is achieved in that the motor vehicle antitheft device of being made up of remote controller, main frame and annunciator, the host work circuit comprise demodulating and decoding part, sense shake signal amplifying part branch, antitheft setting section, optical signal takes place and promote part, report to the police time-delay and promote part, remove part, annunciator power supply and power unit, antitheft setting section comprises again sets OR-gate part, mechanical system setting section and electric mode setting section.

A, the sense signal amplifying part branch that shakes comprises sense shake probe, the sense signal amplifier that shakes, the noise of setting up discriminate the part of going out comprise low frequency and intermediate frequency active band-pass filter and peak detection partly, comparator; Sense is shaken to pop one's head in and is made up of piezoelectric ceramic piece and thin metal rod, on one side piezoelectric ceramic piece substrate outer is installed in enclosure interior, an end of thin metal rod is assemblied in piezoelectric patches substrate outer another side, and the thin metal rod other end is unsettled; The input end of feeling the signal amplifier that shakes is connected with the silver-plated pole piece of piezoelectric ceramic piece, output divides two the tunnel to be connected with the input end of low frequency, intermediate frequency active band-pass filter respectively, output low, the intermediate frequency active band-pass filter the peak-detector circuit of respectively hanging oneself is connected with the homophase and the inverting input of comparator respectively, and the output of comparator is connected with the input end of the preventing jittering circuit of the antitheft setting section of mechanical system.Because the intrinsic mechanical vibration frequency of the piezoelectric patches of dress weldering Metallic rod is f1, its reflection self-propelled vehicle directly is subjected to the dominant frequency of the mechanicalness collision vibration wave that produces, therefore above-mentioned sense is shaken to pop one's head in and is had the frequency-selecting effect, probe still can be responded to the ambient sound waves that dominant frequency is f2 because sense is shaken, central frequency is set is respectively the low of f1 and f2, the intermediate frequency active band-pass filter, make mechanical vibration wave and the electric signal due to the sound wave separate and after peak detection is level and smooth, send into respectively the homophase and the inverting input of comparator, it is identical that peak detection plays the number of times that number and self-propelled vehicle that smoothing effect makes the output vibratory impulse of comparator invaded and harassed to each a string vibration wave signal of bandpass filter output, is beneficial to the antitheft setting section of mechanical system the suffered collision frequency of vehicle is counted.When self-propelled vehicle was subjected to percussion, even there is environmental noise to exist, the frequency of low frequency bandpass filter output was that the frequency that the vibration wave signal amplitude of f1 is exported much larger than if bandpas filter is the acoustic signals of f2, comparator output vibratory impulse; Extremely strong so that object on every side had when shaking the effect of shaking (as explosive sound) when environmental noise, because changing the vibration processes degradation of energy of self-propelled vehicle into, sound wave or blast make the f1 vibration wave signal amplitude of active band-pass filter output much smaller than f2 acoustic signals amplitude, so the pulse of comparator no-output, thereby suppress the caused flase alarm of environmental noise effectively.

B, the antitheft setting section of mechanical system comprise that two univibrators, one are set greater than octadic counting/distributing box, one and select circuit and one two input end output pulse OR-gate; The mouth of setting OR-gate is connected with the permission work control end of two univibrators respectively, the trigging pulse input end of a univibrator (preventing jittering circuit) is connected with the comparator output terminal that noise is discriminated the part of going out, the mouth one tunnel of this binary pair is connected with the trigging pulse input end of another univibrator (counting door opening timing circuit), one the tunnel is connected with the count pulse input end of counting/distributing box, leading up to set selects circuit to be connected with an input end of output pulse OR-gate, the mouth of OR-gate is connected with the trigging pulse input end of warning and delaying circuit, input control end that set to select circuit and decoded portion corresponding to setting I, but one of latch data mouth of setting II connects, the mouth of another univibrator is connected with the clear terminal of counting/distributing box, the reset terminal of this univibrator is connected with the mouth of warning and delaying circuit, select the individual mouth of counting/distributing box (K-1) to be connected with another input end of output pulse OR-gate, K is the vibratory impulse number of preventing jittering circuit output.After carrying out setting I (differentiating antitheft) operation, set OR-gate output high potential, allow two univibrator work, set and select circuit only to allow the individual mouth of counting/distributing box (K-1) to provide the warning trigging pulse for warning and delaying circuit by output pulse OR-gate.In case noise processing circuit output vibratory impulse, this pulse elder generation is through the anti-shake processing of a univibrator, to guarantee that vehicle is subjected to the number of times of percussion identical with the number of vibratory impulse, it exports one tunnel count pulse as counting/distributing box, another road is as the trigging pulse of another univibrator, make this binary pair enter the transient state that time delay is T2, its output voltage is opened the counting door by the clear terminal of counting/distributing box, counting/distributing box T2 in the time to after anti-shake processing from the 2nd vibratory impulse begin the counting, when receiving (K-1) individual pulse (be noise discriminate the circuit that goes out send K pulse), the individual mouth output of counting/distributing box (K-1) high potential, and trigger warning and delaying circuit by output pulse OR-gate and make Car Burglar Alarm enter alarm condition, another univibrator is reset during reporting to the police, count splitter is cleared, to wait for the arrival in next countdown warning cycle; If another univibrator is triggered, but it is individual to be less than (K-1) at the count pulse that T2 time inside counting/distributing box receives, then warning and delaying circuit is not triggered, this situation promptly is judged as self-propelled vehicle and only is subjected to accidental bumping, non-premeditated auto theft, the utility model claim that K/T2 is the auto theft math modeling.When carrying out setting II (antitheft immediately) operation, set OR-gate output high potential, the work of permission univibrator, set and select circuit to allow the vibratory impulse through anti-shake processing of a univibrator output directly to trigger warning and delaying circuit, in case self-propelled vehicle is subjected to percussion, Car Burglar Alarm promptly enters alarm condition, and another univibrator is reset thereupon, and counting/distributing box can not be counted.After self-propelled vehicle is held as a hostage, in remote control distance, carry out to set I or set the II operation, the fierce vibration that is suffering because of vehicle is sufficient to make Car Burglar Alarm immediately or delayed alarm and make vehicle immobilization, thereby has realized anti-misfortune car function.

C, set up key time and separate and seek car time-delay part, comprise two univibrators, two two input end AND gates, a differential circuit and an integrating circuit; But decoded portion is connected corresponding to an input end of a latch data mouth of seeking the car function and an AND gate, the decoding of decoded portion approves that effectively pulse output end is connected through another input end of differential circuit and this AND gate, the mouth one tunnel of this AND gate is connected with the trigging pulse input end of a univibrator, one the tunnel is connected with an input end of another AND gate, the mouth one tunnel of a univibrator is connected with an input end of the control OR-gate of optical signal generation circuit, another input end of one passing point circuit and another AND gate is connected, the trigging pulse input end of the mouth of another AND gate and another univibrator is connected, the mouth one tunnel of another univibrator is connected with another input end of the control OR-gate of optical signal generation circuit, and one the tunnel is connected with the input end of annunciator power pack.When the car operation is sought in execution for the first time, but decoded portion is a high potential corresponding to the latch data mouth of seeking the car function, first pulse is exported in decoding effectively approval pulse output end, because of AND gate output of the effect of differential circuit and decoding effectively the corresponding burst pulse of approval leading edge of impulse trigger a univibrator and enter transient state and make optical signal generation circuit working, Car Burglar Alarm produces light and seeks the car signal, because of another input end of another AND gate can not produce jump in potential immediately because of the short time delay effect of integrating circuit, so another AND gate does not have pulse output, another univibrator keeps ortho states; During producing light at Car Burglar Alarm to seek the car signal, carry out once more and seek the car operation, an AND gate is exported a burst pulse once more, because of a univibrator still is in transient state, another input end of another AND gate has been finished current potential jerk, so another AND gate is also exported burst pulse and is triggered another univibrator and enter transient state, make annunciator power pack output voltage, Car Burglar Alarm produces acousto-optic and seeks the car signal.Carry out and once seek the car operation, self-propelled vehicle produces light and seeks the car signal, carries out secondary and seeks the car operation, then produces acousto-optic and seeks the car signal, has realized that promptly a key is dual-purpose.In the vehicle ' way, run into dangerous situation, can carry out and seek car operation generation sound and light signal, do not trigger warning and delaying circuit because of seeking the car operation as distress signal, but the still cruising of emergency process vehicle that gets into danger.

D, optical signal generating unit are divided into flashing signal generation circuit, it is controlled, final state the multi-vibrator that shakes/stop for " 0 ", the control end and have the mouth of the control OR-gate of various control voltage input to be connected of shaking/stop of this multi-vibrator, the mouth of multi-vibrator then is connected with the input end of flashing signal promotion circuit.Seek car function etc. in case trigger warning and delaying circuit or execution, the control end jump in potential of shaking/stop of multi-vibrator, oscillator work, the promotion control voltage that output " 1 " " 0 " replaces makes Car Burglar Alarm produce flashing signal; In case shake/and stopping the control loss of voltage of control end, the multi-vibrator failure of oscillation is in " 0 " attitude, and flashing signal disappears.

The utlity model has following advantage:

1, the discriminating anti-theft feature implication that has has two, at first sense is shaken, and sonde configuration is simple, frequency-selecting is effective, cooperate noise to discriminate the circuit that goes out and suppressed the environmental noise interference, keep the vibration signal that the reflection vehicle is invaded by mechanicalness directly, got rid of the flase alarm that environmental noise causes; Next sets up the auto theft math modeling, and the invasion to vehicle that only meets math modeling just is considered to the auto theft behavior, has got rid of the flase alarm that causes is collided in the chance of vehicle.

2, but the coding/decoding of present common employing pairing IC has only 4 latched data sign indicating numbers, this is just determining under the situation of additional circuit not, the instruction key position of carrying out feature operation can not be above 4, make a key dual-purpose after adopting key time separation circuit, that has realized same key position quietly seeks car and acousto-optic is sought the car function.

3, because the optical signal load current of anti-theft device for vehicle is bigger, generally control its break-make by relay contact, but the noise of relay when adhesive and release will cause the anti-theft device for vehicle flase alarm, adopting noise to discriminate the measure of going out is the prerequisite that flashing signal generation circuit is set, and optical signal of the present utility model is the necessary optical flare signal of burglar alarm.

Fig. 1 is that the utility model host implementation example pull up circuit is always schemed, and Fig. 2, Fig. 3, Fig. 4 are the part figure of Fig. 1, and Fig. 5 is that sense is shaken probe at the assembling scheme drawing of main printed board, and Fig. 6 is that motor bike is used the interconnecting wiring diagram that the utility model increases anti-theft alarm function.

The utility model remote controller working circuit diagram is seen electronics newspaper 95 years 46 phases, six editions " remote-wireless warning motor vehicle antitheft device " literary compositions.

Below in conjunction with accompanying drawing, document and embodiment, each component part of circuit is at first described, further write content of the present utility model exactly by the working process of describing the utility model embodiment then.

The remote controller pull up circuit comprises coded portion and modulate emission part.Coded portion comprises coding IC (AX5326 or TWH9256), diode (D3-D6), resistance (R2-R6), touches button (S1-S4).Modulate emission partly comprises aerotron (V), diode (D1-D2), electric capacity (C1-C4), inductance (L1), printed antenna (W) (the element code name follows document).S1-S4 is as instruction key for the present embodiment regulation, and its function is respectively antitheft setting I, antitheft setting II, seeks car and releasing.

With reference to accompanying drawing 1 (do not annotate the figure number place to descend to the mortal world and all refer to Fig. 1), present embodiment host work circuit comprise demodulating and decoding part, sense shake signal amplify with noise discriminate go out part, antitheft setting section, press the key number of times separate and seek car signal lag part, flashing signal takes place and promote part, the time-delay and promote part, remove and start zero clearing part, annunciator are powered and power unit of reporting to the police.

Demodulating and decoding partly comprises superregenerative detection part, paraphase part, amplify shaping unit and decoded portion.The superregenerative detection part is made up of aerotron (Q1), diode (D7), resistance (R7-R10), electric capacity (C5-C11), inductance (L2), printed antenna (W2), and resistance (R11), electric capacity (C12) are this part decoupling component; The paraphase part is made up of aerotron (Q2), resistance (R12-R14), electric capacity (C13-C15); Amplifying shaping unit is made up of general integrated operational amplifier IC1 (LM324 or like product) in-to-in amplifier (OP2), resistance (R15-R16), electric capacity (C16); Decoded portion is made up of decoding integrated circuit IC2 (AX5327 or like product), oscillation resistance (R17).Restituted signal enters IC2 (14) pin by amplifier OP2 output.

Sense shake signal amplify with noise discriminate the part of going out comprise sense shake probe, sense shake signal amplifier, low frequency and intermediate frequency multiterminal inverse feedback active band-pass filter and peak detection partly, comparator.Feeling the probe that shakes is that the piezoelectric ceramic piece (2) of Φ, the thin metal rod (3) that length is l are formed by diameter, l＞Φ wherein, piezoelectric ceramic piece substrate outer is installed in the Car Burglar Alarm main frame master printed board (1) on one side, thin metal rod one end is assemblied in piezoelectric patches substrate outer another side, the other end is unsettled, sees Fig. 5; Sense is shaken signal amplifier by aerotron (Q3), resistance (R18-R20) is formed, low frequency multiterminal inverse feedback active band-pass filter and peak detection part are by general-purpose operation amplifier LM324 (IC1) in-to-in amplifier (OP1), diode (D8), resistance (R21-R26), electric capacity (C17-C19) is formed, intermediate frequency multiterminal inverse feedback active band-pass filter and peak detection part are by IC1 in-to-in amplifier (OP3), diode (D9), resistance (R27-R31), electric capacity (C20-C22) is formed, the comparator part is formed resistance (R32 by the inner amplifier of IC1 (OP4), R33), electric capacity (C23) is amplifier (OP1, OP3) in-phase input end provides fixed voltage; The silver-plated pole piece of piezoelectric ceramic piece is connected with the Q3 ground level by R18, low, intermediate frequency active band-pass filter and peak-detector circuit are respectively by resistance (R21, R27) and Q3 collector coupled, this is low, the output of intermediate-frequency filter and peak-detector circuit links to each other with comparator in-phase input end (IC1 (12) pin) and inverting input (IC1 (13) pin) respectively, and the vibratory impulse of comparator (OP4) mouth (IC1 (14) pin) is sent to the trigger end (IC4 (11) pin) of the preventing jittering circuit of mechanical system setting section.

Antitheft setting section comprises sets OR-gate part, mechanical system setting section and electric mode setting section.Setting the OR-gate part is made up of IC2 (AX5327) (10)-(11) pin, diode (D10-D11), resistance (R34).The antitheft setting section of mechanical system comprises by double D trigger CD4013 (IC4) in-to-in d type flip flop (FD2), diode (D12), resistance (R37-R38), the vibratory impulse preventing jittering circuit of the univibrator that electric capacity (C24) is formed, by another d type flip flop of IC4 in-to-in (FD1), diode (D13), resistance (R39-R40), the counting door opening timing circuit of the univibrator that electric capacity (C25) is formed, decimal scale counting/the distributor circuit of being made up of counting/distributor C D4017 (IC5) is by diode (D14-D15), the output pulse OR-circuit that resistance (R44) is formed and by decoding integrated AX5327 (IC2) (10) pin, aerotron (Q4), circuit is selected in the setting that resistance (R41-R43) is formed; The data terminal of FD1-FD2 (IC4 (5), (9) pin) be connected with the output of setting OR-gate, Q end (IC4 (13) pin) a tunnel of FD2 is connected with the CP end (IC4 (3) pin) of FD1, one the tunnel is connected with the CP of IC5 end ((14) pin), another road is connected with the C utmost point (being the anode of diode (D14)) of Q4 by R43, the base stage of Q4 is connected with IC2 (10) pin through resistance (R41), the Q end (IC4 (2) pin) of FD1 is connected with the Cr end ((15) pin) of IC5, select for use the end among the IC5 mouth Y1-Y9 to be connected with the anode of diode (D15), the mouth of output pulse OR-gate is connected with IC7 (11) pin, and the Q end of IC7 is connected with the R end (IC4 (4) pin) of FD1 through diode (D16).The antitheft setting section of electricity mode is made up of IC3 in-to-in AND gate (A2), resistance (R35, R36), terminal point (N (5)), N (5) current potential reflection vehicle electric switch state, and one of A2 input is set OR-gate and is controlled, and output directly triggers warning circuit.

Press the separation of key number of times and seek the car signal lag and partly comprise two univibrators forming by double D trigger CD4013 (IC6) two d type flip flops of in-to-in (FD3-FD4), diode (D17-D18), resistance (R47-R48, R50-R51), electric capacity (C27-C28), CD4081 (IC3) two AND gates of in-to-in (A3-A4), the integrating circuit that differential circuit that resistance (R46), electric capacity (C26) are formed and resistance (R49), electric capacity (C29) are formed; Integrated IC2 (17) pin of decoding is connected with IC3 (9) pin by described differential circuit, IC2 (12) pin is connected with IC3 (8) pin, IC3 (10) pin one tunnel is connected with IC3 (12) pin, another road is connected with IC6 (3) pin, IC6 (1) pin is on the one hand as flashing signal generation circuit control voltage output end, be connected with IC3 (13) pin by described integrating circuit on the other hand, IC3 (11) pin is connected with IC6 (11) pin, and IC6 (13) pin is controlled voltage output end as sound and optic signal.

Flashing signal takes place and the pushing part branch comprises that control OR-circuit, flashing signal generation circuit and flashing signal promote circuit.The control OR-circuit is made up of diode (D19-D22), resistance (R52); Flashing signal generation circuit is controlled for shaking/stopping of being made up of double D trigger CD4013 (IC7) in-to-in d type flip flop (FD5), diode (D23-D25), resistance (R53-R54), electric capacity (C30-C31), final state is the multi-vibrator of " 0 ", its trigger control end (CP end) (IC7 (3) pin) is controlled by the output voltage of controlling OR-gate, and mouth (Q end) (IC7 (1) pin) then promotes the level base stage with flashing signal and is connected; Flashing signal promotes circuit to be made up of aerotron (Q5), diode (D26-D28), resistance (R55-R56), relay (J1), terminal point (N (1)-N (2)), and N (1), N (2) export two road flare voltages.

Warning time-delay and pushing part branch comprise warning and delaying circuit and report to the police the promotion circuit.Warning and delaying circuit is the univibrator of being made up of IC7 (CD4013) in-to-in d type flip flop (FD6), diode (D29), resistance (R57-R58), electric capacity (C32); Report to the police and promote partly to form by aerotron (Q6), diode (D30), resistance (R59-R60), relay (J2) and terminal point (N (6)-N (8)).The CP end (IC7 (11) pin) of univibrator and S end (IC7 (8) pin) are subjected to the mechanical system setting section of antitheft setting section and the control of electric mode setting section output respectively, mouth (IC7 (13) pin) then is connected with the promotion level base stage of reporting to the police, and terminal point (N (6)-N (8)) is as the flame-out control of vehicle contact.

Remove and the start zero clearing partly be by the relieving circuit that IC2 (AX5327) (13) pin and (17) pin, IC3 (CD4081) in-to-in AND gate (A1) are formed pass through isolation resistance (R61) and the start clear circuit of forming by aerotron (Q7), resistance (R62), electric capacity (C33) mutually " or " then be connected with the reset terminal (R end) of binary pair (FD3, FD4, FD6) respectively by isolation diode (D31-D33).

Annunciator power supply and power unit comprise alert the OR-circuit of being made up of diode (D34-D36), resistance (R63-R64), annunciator feed circuit of being made up of aerotron (Q8-Q9), resistance (R65-R66), terminal point (N (4), N (10)) and the power circuit of being made up of terminal point (N (3), N (9)), the integrated IC8 of three-terminal voltage-stabilizing (7805), diode (D37), resistance (R67), electric capacity (C34-C36).

Terminal point N (the 1)-N (10) that belongs to each part mentioned above is main frame and extraneous handshaking contact and power supply lead wire: N (1)-N (2) connects the left and right corner lamp positive pole of vehicle respectively; N (3), N (9) connect vehicle battery positive pole and negative pole respectively; N (4), N (10) device power supply lead wire taking alarm; N (5) is connected to the Vehicle Power line that is subjected to electric switch key control (switch), N (6)-(8) control vehicle flameout circuit.

With reference to accompanying drawing 6, the dotted line left side is present embodiment main frame and annunciator, and the right side is the relevant circuit of motor bike.ZJ represents main frame among the figure, and HOR represents annunciator, and L1, L2 are motor bike left and right sides corner lamp, and K1 is the corner lamp direction switch, and SG is a Der Blink und Abblendschalter, and K2 is a switch, and BAT is a storage battery, and CDI is an Ignition Module, and HVT is a high-voltage ignition transformer.

After present embodiment was finished wiring with the relevant circuit of motor bike by Fig. 6, host power supply partly obtained power supply by N (3), N (9) from motorcycle battery, and its voltage is B1.Voltage B1 lead up to relay J 1 open contact to the flash of light load power supply is provided, another road by anti-reverse diode D37 after voltage be B2.B2 provides coil voltage for relay J 1, J2 on the one hand, for the annunciator power pack provides power line voltage, on the other hand through current-limiting resistance R67, three-terminal voltage-stabilizing IC8 obtain burning voltage B3 (+5V) as the low potential source of main frame electronic circuit, C34-C36 is a filter capacitor.

When main frame inserts power supply moment, start zero clearing part can not be suddenlyd change because of capacitor C 33 voltages, aerotron Q7 is saturated, its C pole tension is bordering on B3, this voltage makes d type flip flop FD3, FD4, FD6 reset by diode B31-D33, has avoided the random state of main frame energising instantaneous trigger device to cause the host function disorder.Along with process of charging C33 voltage rises, Q7 ends, and start zero clearing process finishes automatically.

When the arbitrary instruction key of pressing remote controller, one of remote controller S1-S4 closure, coding IC gets electric by diode D1, D2, one of D3, key S1-S4, and a corresponding pin current potential rises to high potential in IC (10)-(13) pin simultaneously.IC (10)-(13) pin state is as back 4 (numeric data codes) of 12 code signals, together with 8 bit address sign indicating numbers by the output of IC (17) pin, by R1 modulated carriers generator triode V, modulated carrier by printed antenna W to spatial emission.When stopping to press key, the IC dead electricity of encoding, aerotron V ends and failure of oscillation, and printed antenna stops to launch electric wave.

Because present embodiment master machine antenna W2 and capacitor C 7-C9 parallel resonance are in the remote controller transmitting frequency, in case remote controller emission carrier wave, the superregenerative detection circuit of main frame just amplifies and demodulation the modulated carrier signal that receives, output modulation signal and through aerotron Q2 paraphase, amplifier OP2 amplifies shaping, is exported by IC1 (7) pin at last.Because this modulation signal promptly is the code signal of remote controller, it is admitted to decoding integrated IC2 (14) pin and implements decoding.In IC2 inside, if 8 bit address sign indicating numbers are identical with the IC2 address code in the code signal, then IC2 (17) pin output high potential represents that decoding effectively, 4 (being numeric data code) promptly is latched and exported by IC2 (10) pin-(13) pin behind the code signal, and (10) pin-finish identical by the state of (13) pin when pressing key with remote controller coding IC for its state.It is identical that the time length of IC2 (17) pin high potential (i.e. this pin positive pulse width) and remote controller are pressed the key time, and IC2 (10)-(13) pin data hold time is to press the time gap of key twice.

Be the reliability of guaranteeing to carry out with the setting or the function of remote controller control Car Burglar Alarm, each operation that the design of present embodiment makes remote controller by the flicker of vehicle corner lamp in response, to show the antitheft corresponding state that entered, thereby set up necessary man-machine interface, its working process is: IC2 (17) pin positive pulse is by diode D19 trigger flashing signal generating circuit, IC7 in-to-in FD5 is by set, IC7 (1) pin high potential charges to C30 by R53, IC7 (4) pin (R end) current potential rises, through T5 ≈ 0.69R53C30, the FD5 reset that is reset, the upset of IC7 (2) pin is charged to C31 for high potential and by R54, IC7 (6) pin (S end) current potential is risen, and through T6 ≈ 0.69R54C31, FD5 is again by set ....As long as IC7 (3) pin continues high potential, this process will be continuous repeatedly, flashing signal generation circuit oscillation, IC7 (1) pin output square-wave voltage, and through R55, R56 make flashing signal promote circuit aerotron Q5 alternately saturated, end, J1 replaces adhesive, release, and voltage B1 is by J1 open contact, isolation diode D27-D28, make the flicker of vehicle corner lamp by line point N (1)-N (2).When stopping the pressing instruction key, IC2 (17) pin positive pulse disappears, IC7 (3) pin active potential, IC7 (6) pin is clamped on active potential by diode D25, make FD5 pass through at most T5 after second failure of oscillation in " 0 " attitude.Because press key operation promptly by i.e. pine, IC2 (17) pin positive pulse is narrower, IC7 (3) pin high potential time length is short, so flashing signal generation circuit generally only keeps an oscillation period after being triggered, and corner lamp glimmers once.

When the pressing remote controller is set I or is set the II key, main frame IC2 (17) pin output positive pulse, (10) pin or (11) pin output high potential.IC2 (17) pin positive pulse makes the corner lamp flicker press key operation with response, and IC2 (10) or (11) pin high potential then make sets OR-gate output high potential.Set the OR-gate high potential and make IC3 (6) pin high potential on the one hand, make electric mode setting section be on the alert, as long as the vehicle electric switch is unlocked, be that K2 closes and contains among Fig. 6, terminal point N (5) current potential rises and makes IC3 (5) pin high potential, AND gate A2 promptly exports the FD6 set that high potential makes IC7, forces warning and delaying circuit to enter alarm condition; Make IC4 (5), (9) pin (D end) high potential allow vibratory impulse preventing jittering circuit and the work of counting door opening timing circuit start on the other hand, therefore the mechanical system setting section enters the state of alert.

Feeling shakes pops one's head in as after Fig. 5 assembling, and natural mode shape is low frequency f1, and when the probe sensitivity arrived the microvibration ripple, the HD two ends may produce low frequency f1, reach the faint potential change of other frequencies.When vehicle is bumped, mechanicalness such as strike when invading and harassing, probe excited target after vibration frequency is based on low frequency f1, this signal frequently of shaking amplifies the back by being that the central frequency of core composition is the low frequency multiterminal inverse feedback bandpass filter of f1 with the inner amplifier OP1 of IC1 through Q3, and through D8, the level and smooth back of C19 peak detection forms the positive pulse signal and enters the in-phase input end of the inner amplifier OP4 of IC1 of device as a comparison, because probe can only encourage fainter intermediate frequency f2 signal at most in these cases, therefore through Q3 amplify the back by with IC1 inside amplifier OP3 be the central frequency of core be f2 bandpass filter of the same type signal a little less than, through D9, the impulse singla that is delivered to the comparator inverting input after the C22 peak detection is level and smooth also a little less than, comparator will be carried the vibratory impulse signal to the preventing jittering circuit of antitheft setting section by IC1 (14) pin.When there is sound pollution source in vehicle periphery, light noise can only incentive probe intermediate frequency f2 signal, and strong noise (as explosive sound) is though also low, the intermediate-freuqncy signal of incentive probe simultaneously, but low frequency f1 component a little less than, two frequency signals are sent into comparator through amplification, filtering, peak detection after forming positive pulse, because the inverting input impulse amplitude is greater than in-phase input end,, thereby very suppress the Car Burglar Alarm flase alarm due to the environmental noise interference effectively so comparator does not have pulse output.

Under the state of alert, when the FD2 with IC4 is that the univibrator (preventing jittering circuit) of core is triggered when entering transient state by above-mentioned vibratory impulse, the upset of IC4 (13) pin is high potential, this high potential charges to C24 through R37, through T1 ≈ 0.69R37C24, IC4 (4) pin current potential arrives reset level, FD2 recovers stable state, IC4 (13) pin recovers zero level, C24 discharges rapidly by D12, R38, wait for the arrival (univibrator working process described later similarly will no longer describe in detail) of next trigging pulse.The positive pulse width T1 of IC4 (13) pin output is bumped, is evoked when striking the shake time length of probe vibration of sense greater than vehicle, so this univibrator amplifies and discriminates the vibratory impulse that the circuit that goes out exports with noise and play further anti-shake effect the sense signal that shakes.The sense of anti-twitter circuit output is shaken pulse one tunnel as the trigging pulse of counting door opening timing circuit (FD1 of IC4), so that being negative going pulse (Q of FD1 is a mouth) control IC5 (15) pin of T2 (transient state time), the output width make the counting door open the T2 time, one tunnel input IC5 (14) pin is as at the count pulse of setting the I hour counter, another road then when setting II directly as the trigging pulse of warning and delaying circuit.Setting I, because of IC2 (10) pin high potential, aerotron Q4 is saturated, feels shake pulse impassabitity R43 and D14 triggering warning and delaying circuit.The order sense is shaken pulse through preventing that the pulse number after the twitter circuit shaping is N, the N=1 clock pulse charges and attacks out the counting door of counting machine IC5, N 〉=2 hour counters counting, and make IC5 mouth Y1 ... Y9 distinguishes high potential successively, select a certain mouth of IC5 to be connected, so that the high potential of this mouth output of N=K hour counter triggers warning and delaying circuit through D15 with D15.Present embodiment is selected K/T2 ≈ 1/10, T2 ≈ 60 seconds, and claim that K/T2 is burglar's auto theft math modeling.Has the character that the suffered mechanicalness of automatic discriminating vehicle is invaded and harassed owing to set I, so be suitable for using when noisy environment stops.Setting II, because IC2 (10) pin active potential, aerotron Q4 ends, and the sense pulse of shaking directly enters IC7 (11) pin by R43, D14 and triggers warning circuit, so set II the instant alarming function is arranged, and generally selects for use when stopping night.

The univibrator that IC 7 in-to-in FD6 and peripheral circuit thereof are formed promptly is above-mentioned warning and delaying circuit, under the state of alert, as long as vehicle is invaded by mechanicalness and satisfied the setting alert if, trigging pulse promptly appears in IC7 (11) pin makes binary pair enter transient state, and time-delay T7; When the vehicle electric means is invaded, when opening electric switch with pseudo-key, the A2 output high potential of AND gate IC3 also enters transient state by IC7 (8) pin pressure FD6, has only that FD6 could finish the transient recovery stable state after pseudo-key removes.In case the FD6 of IC7 enters transient state, Car Burglar Alarm just is in alarm condition, at this moment the high potential of IC7 (13) pin divides four tunnel outputs: leading up to R59, R60 makes that report to the police to promote circuit Q6 saturated, the J2 adhesive, it is normally closed to disconnect contact N (6)-N (7) and cuts off motor bike high-voltage ignition coil, forces the vehicle (see figure 6) of stopping working; Lead up to alert sound OR-circuit (D35) thus make Q8 Q9 saturated, conducting annunciator feed circuit, therefore voltage B2 is transported to contact N (4), and annunciator is yowled; The flashing signal OR-circuit (D20) of leading up to makes IC7 (3) pin high potential, and the starting of oscillation of flashing signal generation circuit promotes circuit by IC7 (1) pin output square-wave voltage to flashing signal, vehicle corner lamp flicker among Fig. 6; One tunnel FD1 through R45, ID16 pressure IC4 resets, and counting machine stops counting and zero clearing during reporting to the police.When the FD6 of IC7 recovered stable state after delaying time, IC7 (13) pin was a zero level, and Q6 ends, and J2 discharges, and the vehicle high-pressure ignition wire is connected; Q8, Q9 end, and breaking alarm feed circuit, annunciator stop to pipe; IC7 (3) pin is a zero level, and flashing signal generation circuit failure of oscillation also places zero state, IC7 (1) pin zero level, and Q5 ends, and the vehicle corner lamp stops flicker; IC4 (4) pin recovers zero level, and the FD1 that allows IC4 is triggered and opens the counting door of counting machine, and at this moment Car Burglar Alarm finishes alarm condition.But because of the setting OR-gate of antitheft setting section is still exported high potential, so Car Burglar Alarm still is on the alert.

Utilize remote controller to set I or set the anti-working process of robbing the car function of II key execution and be: after vehicle is robbed, in the remote controller range of control, press and set I or set the II key, when the Car Burglar Alarm main frame enters the state of alert, because the vehicle electric switch is opened, electricity mode initialization circuit (A2 of AND gate IC3) output high potential forces Car Burglar Alarm to enter alarm condition, again because the vibration wave of vehicle startup driving process is subjected to the inspection side of main frame mechanical system setting section continually, screen, anti-shake, counting, warning and delaying circuit also will be triggered and enter alarm condition, enter the flame-out stagnation of movement of vehicle after the alarm condition, the corner lamp flicker, annunciator yowls.

When the pressing remote controller is sought the car key, main frame integrated IC2 (17) the pin output positive pulse of decoding, (12) pin output high potential.IC2 (17) pin positive pulse by differential circuit (C26, R46) and IC2 (12) pin high potential IC3 in-to-in A3 mutually " with " back output presses key pulse the 1st time, this pulse is the trigging pulse of the univibrator of core as the FD3 with IC6, make FD3 enter the transient state of time-delay T3, another road is as the input of the A4 of AND gate IC3, but, do not have and to remove to trigger IC6 in-to-in FD4 by A4 so press key pulse the first time that A3 exports because of the Q of FD3 end high potential is through another input end of integrating circuit (R49, C29) time-delay back input A4.After FD3 entered transient state, its Q end high potential made IC7 (3) pin high potential by D21, flashing signal generation circuit working T3 second, vehicle corner lamp flicker T3 second.Seek the car key when heavily pressing remote controller, the A3 of IC3 exports the 2nd time and presses key pulse, because the Q of the FD3 of IC6 end high potential has made the end input high potential of the A4 of IC4 by integrating circuit, so pressing that key pulse can trigger with FD4 through A4 for the 2nd time is that the univibrator of core makes it to enter transient state, time-delay T4.The Q of FD4 end high potential is leaded up to diode D22 makes flashing signal generation circuit working, the corner lamp flicker, and another road makes aerotron Q8, Q9 saturated by D34, and conducting annunciator power supply yowls annunciator.As seen, seek the car key 1 time when pressing remote controller, the FD3 of IC6 enters transient state, and vehicle shows its position T3 second with optical signal; Seek the car key when heavily pressing, the FD4 of IC6 enters transient state, and vehicle shows its position T4 second with sound and optic signal.The term of execution seeking the car function, because the FD6 of IC7 is not triggered, vehicle does not enter alarm condition, and flame-out line is not disconnected, and vehicle still can start and travels, so can utilize when in danger in the vehicle ' way and seek the car function and produce distress signal.

When pressing remote controller clearing key, the positive pulse of main frame decoding IC2 (17) pin output and the high potential of IC2 (13) pin output are at IC3 in-to-in A1 AND output reset pulse mutually, this pulse resets FD3, the FD4 of IC6 and the FD6 of IC7 through R61, D31-D33, and what interrupt carrying out seeks car or warning function (if carrying out); Because IC2 (10)-(11) pin is an active potential, set OR-gate output active potential again, Car Burglar Alarm withdraws from the state of alert, has removed current antitheft setting (if setting).Above-mentioned reset pulse also makes Q8, Q9 saturated through D36, and annunciator is rung.Car Burglar Alarm produces the acoustic response beyond the photoresponse when increasing diode D36 and realizing pressing the remote controller clearing key, for whether working properly the operator provide daily detection alarm device chance.

Claims

1, a kind of motor vehicle antitheft device, form by remote controller, main frame and annunciator, the host work circuit comprise demodulating and decoding part, sense shake signal amplifying part branch, antitheft setting section, optical signal takes place and promote part, report to the police time-delay and promote part, remove part, annunciator power supply and power unit, antitheft setting section comprises again sets OR-gate part, mechanical system setting section and electric mode setting section, it is characterized in that:

A. the sense signal amplifying part branch that shakes comprises sense shake probe, the sense signal amplifier that shakes, and the noise of setting up is discriminated to go out and partly comprised low frequency and intermediate frequency active band-pass filter and peak-detector circuit, comparator; Sense is shaken to pop one's head in and is made up of piezoelectric ceramic piece and thin metal rod, on one side piezoelectric ceramic piece substrate outer is installed in enclosure interior, an end of thin metal rod is assemblied in piezoelectric ceramic piece substrate outer another side, and the thin metal rod other end is unsettled; The input end of feeling the signal amplifier that shakes is connected with the silver-plated pole piece of piezoelectric ceramic piece, amplifier output divides two the tunnel to be connected with the input end of low frequency, intermediate frequency active band-pass filter respectively, output low, the intermediate frequency active band-pass filter the peak-detector circuit of respectively hanging oneself is connected with the homophase and the inverting input of comparator respectively, the output of comparator is connected with the input end of the preventing jittering circuit of the antitheft setting section of mechanical system

B. the antitheft setting section of mechanical system comprises two univibrators, and one greater than octadic counting/distributing box, a setting selection circuit and one two input end output pulse OR-gate; The mouth of setting OR-gate is connected with the permission work control end of two univibrators respectively, the trigging pulse input end of a univibrator (preventing jittering circuit) is connected with the comparator output terminal that noise is discriminated the part of going out, the mouth one tunnel of this univibrator is connected with the trigging pulse input end of another univibrator (counting door opening timing circuit), one the tunnel is connected with the count pulse input end of counting/distributing box, leading up to set selects circuit to be connected with an input end of output pulse OR-gate, the mouth of OR-gate is connected with the trigging pulse input end of warning and delaying circuit, input control end that set to select circuit and decoded portion corresponding to setting I, but one of latch data mouth of setting II connects, the mouth of another univibrator is connected with the clear terminal of counting/distributing box, the reset terminal of this univibrator is connected with the mouth of warning and delaying circuit, select the individual mouth of counting/distributing box (K-1) to be connected with another input end of output pulse OR-gate, K is the vibratory impulse number of preventing jittering circuit output

C. set up key time separation and seek car time-delay part, comprise two univibrators, two two input end AND gates, a differential circuit and an integrating circuit; But decoded portion is connected corresponding to an input end of a latch data mouth of seeking the car function and an AND gate, the decoding of decoded portion approves that effectively pulse output end is through differential circuit and this " with " door another input end be connected, the mouth one tunnel of this AND gate is connected with the trigging pulse input end of a univibrator, one the tunnel is connected with an input end of another AND gate, an input end of the control OR-gate of the mouth one tunnel of a univibrator and optical signal generation circuit is connected, another input end of one passing point circuit and another AND gate is connected, the trigging pulse input end of the mouth of another AND gate and another univibrator is connected, the mouth one tunnel of another univibrator is connected with another input end of the control OR-gate of optical signal generation circuit, one the tunnel is connected with the input end of annunciator power pack

D. the optical signal generating unit is divided into flashing signal generation circuit, it is controlled, final state the multi-vibrator that shakes/stop for " 0 ", the control end and have the mouth of the control OR-gate of various control voltage input to be connected of shaking/stop of this multi-vibrator, the mouth of multi-vibrator then is connected with the input end of flashing signal promotion circuit.

2, motor vehicle antitheft device according to claim 1 is characterized in that:

A. diameter is that the substrate outer of the piezoelectric ceramic piece [2] of Φ is installed in the main frame master printed board [1] on one side, and length is that thin metal rod [3] one ends of l are assembled in piezoelectric patches substrate outer another side, and the other end is unsettled, wherein l＞Φ; Sense is shaken signal amplifier by aerotron (Q3), resistance (R18-R20) is formed, low frequency multiterminal inverse feedback active band-pass filter and peak detection part are by op amp LM324 (IC1) in-to-in amplifier (OP1), diode (D8), resistance (R21-R26), electric capacity (C17-C19) is formed, intermediate frequency multiterminal inverse feedback active band-pass filter and peak detection part are by IC1 in-to-in amplifier (OP3), diode (D9), resistance (R27-R31), electric capacity (C20-C22) is formed, comparator is made up of IC1 in-to-in amplifier (OP4), resistance (R32-R33), electric capacity (C23) is amplifier (OP1, OP3) in-phase input end provides fixed voltage; The silver-plated pole piece of piezoelectric ceramic piece is connected with aerotron (Q3) base stage by resistance (R18), low, intermediate frequency multiterminal inverse feedback active band-pass filter and peak-detector circuit are respectively by resistance (R21, R27) with the collector coupled of aerotron (Q3), this is low, the mouth of intermediate frequency active band-pass filter and peak-detector circuit is connected with inverting input (IC1 (13) pin) with the in-phase input end (IC1 (12) pin) of comparator (OP4) respectively, the trigger end (IC4 (11) pin) of mouth of comparator (OP4) (IC1 (14) pin) and preventing jittering circuit is connected

B. the antitheft setting section of mechanical system comprises by double D trigger CD4013 (IC4) in-to-in d type flip flop (FD2), diode (D12), resistance (R37-R38), the vibratory impulse preventing jittering circuit of the univibrator that electric capacity (C24) is formed, by another d type flip flop of IC4 in-to-in (FD1), diode (D13), resistance (R39-R40), the counting door opening timing circuit of the univibrator that electric capacity (C25) is formed, decimal scale counting/the allotter circuit of being made up of counting/distributor C D4017 (IC5) is by diode (D14-D15), the output pulse OR-circuit that resistance (R44) is formed and by decoding integrated AX5327 (IC2) (10) pin, aerotron (Q4), circuit is selected in the setting that resistance (R41-R43) is formed; D end (the IC4 (5) of d type flip flop (FD1-FD2), (9) pin) be connected with the output of setting OR-gate, the CP end (IC4 (11) pin) of d type flip flop (FD2) is connected with the mouth of the comparator (OP4) of noise processed part, its Q end (IC4 (13) pin) a tunnel is connected with the CP end (IC4 (3) pin) of d type flip flop (FD1), one the tunnel is connected with the CP of CD4017 (IC5) end (IC5 (14) pin), another road is connected with the C utmost point (being the anode of diode (D14)) of aerotron (Q4) by resistance (R43), the base stage of aerotron (Q4) is connected with (10) pin of AX5327 (IC2) through resistance (R41), the Q end (IC4 (2) pin) of d type flip flop (FD1) is connected with the Cr end (IC5 (15) pin) of CD4017 (IC5), select for use the end among CD4017 (IC5) the mouth Y1-Y9 to be connected with diode (D15) anode, the mouth of output pulse OR-gate and the CP end (IC7 (11) pin) of warning and delaying circuit are connected, the Q end (IC7 (13) pin) of IC7 is connected with the R end (IC4 (4) pin) of d type flip flop (FD1) through diode (D16)

C. key time separates and seeks the car signal lag and partly comprises two univibrators being made up of double D trigger CD4013 (IC6) two d type flip flops of in-to-in (FD3-FD4), diode (D17-D18), resistance (R47-R48, R50-R51), electric capacity (C27-C28), four AND gate CD4081 (IC3) two AND gates of in-to-in (A3-A4), the integrating circuit that differential circuit that resistance (R46), electric capacity (C26) are formed and resistance (R49), electric capacity (C29) are formed; The input end (IC3 (9) pin) of (17) pin by differential circuit and AND gate (A3) of integrated AX5327 (IC2) of decoding is connected, (12) pin of IC2 and another input end of A3 (IC3 (8) pin) are connected, one input end (IC3 (12) pin) of the mouth of A3 (IC3 (10) pin) a road and AND gate (A4) is connected, another road is connected with the CP end (IC6 (3) pin) of d type flip flop (FD3), an input end of Q end (IC6 (1) pin) a road of FD3 and the control OR-gate of flashing signal generation circuit is connected, another road is connected by another input end (IC3 (13) pin) of integrating circuit and AND gate (A4), the CP end (IC6 (11) pin) of the mouth of A4 (IC3 (11) pin) and d type flip flop (FD4) is connected, another input end of Q end (IC6 (13) pin) a road of FD4 and the control OR-gate of flashing signal generation circuit is connected, another road is connected with the input end of annunciator power pack

D. flashing signal generation circuit is the multi-vibrator of " 0 " for controlled, the final state of being made up of double D trigger CD4013 (IC7) in-to-in d type flip flop (FD5), diode (D23-D25), resistance (R53-R54), electric capacity (C30-C31) of shaking/stop, the CP end (IC7 (3) pin) of d type flip flop (FD5) is connected with control OR-gate mouth, and its Q end (IC7 (1) pin) promotes the level base stage with flashing signal and is connected.

3, according to claim 1,2 described motor vehicle antitheft devices, it is characterized in that:

The counting door opening timing time T of mechanical system setting section ₂, the vibratory impulse number K of preventing jittering circuit output, K/T2 ≈ 1/10, T2 ≈ 60 seconds.