CN2113214U

CN2113214U - Theft-proof automatic alarm for car

Info

Publication number: CN2113214U
Application number: CN92211278U
Authority: CN
Inventors: 王复亮
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-02-22
Filing date: 1992-02-22
Publication date: 1992-08-19

Abstract

The utility model belongs to the technical field of sound signal apparatus for cars, which comprises a general control processing and information processing circuit, a code generating circuit, a signal detection circuit, an alarm signal transmitter and an alarm signal receiver, wherein, the general control processing and information processing circuit is composed of a code-signal processing circuit, a body-signal processing circuit, a single pulse generating circuit and three delaying control circuits; the code generating circuit is composed of a code circuit and a pseudocode key; the signal detection circuit is composed of a micro-wave alarm head, a low-frequency amplifier and a voltage comparator. When the car is stolen, the utility model can automatically send out an alarm and extinguish the car. The utility model can be arranged on any vehicle, and has the advantages of strong confidentiality, high reliability, and good effect of guarding against theft.

Description

Theft-proof automatic alarm for car

The utility model belongs to the sound signalling technical field of vehicle.

Alarms and security systems for automobiles mainly contains two classes at present, one class is a mechanically controlled type, reinforcing bar by one section bending is also mixed a mechanical lock bearing circle is pinned, its shortcoming is a poor reliability, still can in the scope at 120 degree angles, rotate after bearing circle is lockable on the one hand, thereby criminal's certain distance of travelling that still can drive a car, reinforcing bar is easily sawed-off by the criminal on the other hand, and anti-joyride device is destroyed; Another kind of is electronic control type, reported a kind of " alarms and security systems for automobiles " as Beijing electronics newspaper 89 years 43 is interim, the criminal is when start a car, ignition coil power supply cuts off the power supply automatically, it is by a switch control, the criminal just can remove anti-theft state as long as find this switch in car, thereby inapplicable.More than the common drawback of two kinds of anti-joyride devices are criminals when entering automobile and stealing car, can not in time send alerting signal and notify the relevant personnel to rush towards the scene, thereby make the criminal have time enough to destroy anti-joyride device.

The purpose of this utility model is the automobile burglar autoalarm of a kind of strong security of design, reliability height, good anti-theft effect.

This automobile burglar autoalarm comprises the information processing and total control circuit, password generative circuit, signal deteching circuit, alerting signal emitter and battery-powered alerting signal receiver five parts by the priming supply power supply of automobile; Information processing comprises with the mouth of password generative circuit with total control circuit and being connected by series connected two two input joint denial gates and one the two code signal treatment circuit that input nand gate constitutes, be connected by series connected two input joint denial gates with the mouth of signal deteching circuit, two input nand gates, the human body signal treatment circuit that two input joint denial gates constitute, be connected by RC integrating circuit and high power switch integrated circuit with the mouth of code signal treatment circuit, first delay control circuit that relay constitutes, be connected integrating circuit with the mouth of human body signal treatment circuit by RC, the aerotron pre-amplification circuit, the high power switch integrated circuit, second delay control circuit that relay constitutes, be connected with the priming supply of automobile by silicon control and on the silicon controlled trigger electrode bonded assembly RC integrating circuit, the 3rd delay control circuit that not circuit constitutes is connected the single impulse generative circuit that is made of univibrator with the mouth of the 3rd delay control circuit; The password generative circuit comprises with the mouth of single impulse generative circuit and is connected the current rectifying and wave filtering circuit that is made of diode, resistance, electric capacity, the encode circuit that is followed in series to form according to the order of key letter, rest-set flip-flop by four key letters and four rest-set flip-flops, be connected in parallel on current supply circuit and rectification the filter circuit mouth between four pseudo-code keys, the reset terminal of four rest-set flip-flops is connected with the mouth of current rectifying and wave filtering circuit; Signal deteching circuit comprises by a microwave launcher tube and the microwave warning head that the microwave receiving pipe constitutes, low frequency amplifier with the mouth resistance capacity coupling of microwave receiving pipe is made of integrated circuit is connected the voltage comparator that is made of integrated circuit with the mouth of low frequency amplifier; The alerting signal emitter comprises the audio modulation signal producer that is made of music integrated circuit, the FM transmitter that constitutes by the frequency modulation integrated circuit with the mouth resistance capacity coupling of audio modulation signal producer, be connected the FM signal amplifier that constitutes by power discharging transistor with the mouth of FM signal generator, with the mouth bonded assembly emitting antenna of FM signal amplifier; The alerting signal receiver comprises receiving wire, be connected with receiving wire that height is put by including, local oscillator, mixing, in put, FM signal treater that the integrated package of amplitude limit, frequency-discriminating circuit constitutes, be connected the audio power amplifier that constitutes by integrated circuit with the mouth of FM signal treater, with the mouth bonded assembly buzzer phone of audio power amplifier.

In order to make the reliable and stable work of automobile burglar autoalarm, also can in the common current supply circuit of code signal treatment circuit and encode circuit, be connected to three terminal integrated voltage stabilizer, in the current supply circuit of signal deteching circuit, be connected to three terminal integrated voltage stabilizer, in the current supply circuit of alerting signal emitter, be connected to three terminal integrated voltage stabilizer.

During installation, the normally closed contact of the relay in first delay control circuit is connect the high-tension coil of automobile, open contact connect automobile.

The radical function of this automobile burglar autoalarm is as follows:

1, presses the password normal driving.The driver gets on the bus, and by to behind the password, can start the automobile normal driving, and this moment, signal deteching circuit and alerting signal emitter were not all worked.

2, driver's monitoring of behind car, delaying time.The driver is stopped and is handled affairs or reach terminal in travelling on the way, flame-out back one minute, signal conditioning is just exported one with the single impulse generative circuit of total control circuit and is controlled signal to the password generative circuit, make it to produce an error code, make signal deteching circuit enter monitor state simultaneously, first delay control circuit enters the wait state that makes car engine.The purpose that time-delay is set is to guarantee that the driver does not produce misoperation before leaving automobile.

3, meet robber's car auto alarm.If the driver has the people to steal article in car or the pilferage car into the car after leaving automobile, alerting signal is outwards launched in the work of alerting signal emitter.

4, meet robber's car auto shut down.If there is the people to steal car into the car, when the car stealer connects ignition lock, though automobile can start, just auto shut down within half a minute, if start once more, flame-out once more in half a minute.

5, distantly know automotive safety.After the driver leaves automobile, connect the alerting signal receiver carry, by whether receiving the safety case that alerting signal is promptly known automobile.

6, meeting the misfortune car can stop working.Automobile is met the bad person and is robbed car in the way of travelling, as long as the driver clicks any one in four pseudo-code keys, automobile can auto shut down, and automobile intermittently pipe more than.

Therefore, this automobile burglar autoalarm has strong security, reliability height, warning is accurate, function is many, the characteristics of good anti-theft effect, can be installed on all big or small passenger and freight cars, and commonality is good.

Accompanying drawing has provided embodiment of the present utility model, and its principle of work is illustrated in conjunction with the accompanying drawings, wherein

Fig. 1 is the block scheme of embodiment;

Fig. 2 is information processing and master control schematic circuit diagram;

Fig. 3 is a password generative circuit schematic diagram;

Fig. 4 is the signal deteching circuit schematic diagram;

Fig. 5 is an alerting signal transmitter circuitry schematic diagram;

Fig. 6 is an alerting signal receiver circuit schematic diagram.

In the present embodiment, the antitheft autoalarm of automobile comprises by the information processing of the 12V priming supply E of automobile power supply and master control circuit (1), password generative circuit (2), signal testing circuit (3), alarm signal emitter (4) with by the dry cell E of 6V₅Alarm signal receiver (5) five parts of power supply; Information processing and master control circuit (1) comprise the 1N with password generative circuit (2)₁The IC by series connection that output connects₃₁₁、IC ₃₁₂、IC ₃₂₂The code signal treatment circuit (8) that forms, with the 1N of signal testing circuit (3)₂The IC by series connection that output connects₃₁₃、IC ₃₂₁、IC ₃₁₄The human body signal processing circuit (9) that forms, with IC₃₂₂Output connect by IC₃₀₄、C ₃₀₁、D ₃₀₁、R ₃₀₃、D ₃₀₂、 VR ₃₁、C ₃₀₃、D ₃₀₃、J ₁The first delay control circuit (10) that forms, with IC₃₁₄Output connect by IC₃₀₄、V ₃、D ₃₀₄、R ₃₀₅、R ₃₀₆、C ₃₀₇、 C ₃₀₈、R ₃₀₇、R ₃₀₈、D ₃₀₅、D ₃₀₆、J ₂The second delay control circuit (11) that forms, be connected, control with E between the utmost point and firing key S by anode and be connected to D₃₀₇、R ₃₀₉、C ₃₁₀、R ₃₁₀、IC ₃₂₃、D ₃₀₈、R ₃₁₁、D ₃₀₉The 3rd delay control circuit (12) that forms of SCR, be connected with the negative electrode of SCR by IC₃₀₅、R ₃₁₂、C ₃₀₉The pulse generative circuit (13) that forms, be connected with E by IC₃₀₆、C ₃₀₆The voltage-stablizer (14) that forms; Password generative circuit (2) comprises and IC₃₀₅Output connect by D₁₀₁、R ₁₀₂、C ₁₀₁The rectifying and wave-filtering circuit (15) that forms, by the K that connects successively₁、IC _1－1、K ₂、IC _1－2、K ₃、IC _1－3、K ₄、 IC _1－4The coding circuit (16) that forms, be connected in parallel between the output of firing key S and rectification ripple circuit (15) by K₅、K ₆、K ₇、K ₈The pseudo-code key (17) that forms, IC_1－1、IC _1－2、IC _1－3、IC _1－4Reset terminal be connected with the output of rectifying and wave-filtering circuit (15); Signal testing circuit (3) comprises by a microwave launcher tube and the microwave alarm head (18) that the microwave receiving pipe forms, with the output of microwave receiving pipe, passes through C₂₀₃、R ₂₀₄、R ₂₀₅Coupling is by A₁、C ₂₀₆、R ₂₀₆、C ₂₀₇、R ₂₀₇、C ₂₀₈And A₂、C ₂₁₀、R ₂₀₈、R ₂₁₁、R ₂₁₂、 R ₂₁₃、C ₂₁₁、D ₂₀₁The two-stage low-frequency amplifier (19) that forms, be connected by A with the output of low-frequency amplifier (19)₃、R ₂₁₄、R ₂₁₅、C ₂₁₂、D ₂₀₂、R ₂₁₆、R ₂₁₇、C ₂₁₃、D ₂₀₃、R ₂₀₉、R ₂₁₀、VR ₂And A₄、D ₂₀₄The two-stage voltage comparator (20) that forms, be connected by IC with the negative electrode of SCR₂₀₁、C ₂₀₁、C ₂₀₂The voltage-stablizer (21) that forms; Alarm signal emitter (4) comprises by IC₄₀₁、R ₄₀₁、D ₄₀₁、C ₄₁₄、C ₄₁₅The audio modulation signal generator (22) that forms, with IC₄₀₁Output pass through C₄₀₁、R ₄₀₃Coupling is by IC₄₀₂、C ₄₀₂、C ₄₀₃、C ₄₀₄、C ₄₀₅、C ₄₀₆、C ₄₀₉、C ₄₁₀、C ₄₁₁、C ₄₁₂、C ₄₁₆、L ₄₀₁、R ₄₀₄、R ₄₀₅、R ₄₀₆、R ₄₀₇The FM signal generator (23) that forms, with IC₄₀₂Output connect by V₄、R ₄₀₉、R ₄₁₀、C ₄₀₇The FM signal amplifier (24) that forms, pass through C₄₀₈With V₄The transmitting antenna (25) that connects of colelctor electrode, with J₂Normally opened contact J_2－1Connection is by IC₄₀₃、C ₄₁₃The voltage-stablizer (30) that forms; Alarm signal receiver (5) comprises reception antenna (26), be connected with reception antenna (26) that height is put by including, local oscillator, mixing, in put, the IC of amplitude limit, frequency-discriminating circuit₅₀₁And L₅₀₁、L ₅₀₂、R ₅₀₁、C ₅₀₁、C ₅₀₂、C ₅₀₃、C ₅₀₄、C ₅₀₅、C ₅₀₆、 C ₅₀₇、C ₅₀₈、C ₅₀₉、C ₅₁₀、C ₅₁₁、C ₅₁₂The FM signal processor (27) that forms, with the output of FM signal processor (27), be connected by IC₅₀₂、C ₅₁₃、R ₅₀₂、VR ₅、C ₅₁₄、C ₅₁₅、C ₅₁₆、C ₅₁₇、C ₅₁₈The audio power amplifier (28) that forms, the buzzer (29) that is connected with the output of audio power amplifier (28).

The principle of work of circuit is:

In password generative circuit (1), four pseudo-code key K are arranged ₅-K ₈With four key letter K ₁-K ₄, they are touch-switch, change K ₁-K ₄Arrangement position in eight touch-switch can be and obtains different codings, thereby 8 * 7 * 6 * 5=1680 kind coding is arranged.IC _1-1-IC _1-4Be a slice rest-set flip-flop CD4043, wherein R ₁-R ₄Be reset terminal, S ₁-S ₄Be set end, Q ₁-Q ₄Be mouth, when pressing K ₅-K ₈In any one the time, each reset terminal is all exported a high level pulse signal, each mouth is low level, therefore, the mouth 1N1 of password generative circuit (1) is a low level.

When the driver drives,, press K successively earlier according to password ₁-K ₄, make 1N ₁End is high level, at this moment the U among Fig. 2 ₁₁The point high level, U ₁₄The point low level is used ignition key S cut-in point ignition source E then, at this moment E ¹=E, this voltage is through R ₃₀₃, VR ₃₁Give C ₃₀₃Charging is when charging valtage is raised to D ₃₀₁Threshold voltage when above, D ₃₀₁So conducting is IC ₃₀₃5 pin by embedding built in threshold voltage, IC ₃₀₃End, its mouth is a low level, J ₁Be failure to actuate normally closed contact J _1-1Connect automobile ignition coil (6), automobile normal running, at this moment, because of U ₁₃Point is high level, U ₂₅Point is low level, D ₃₀₄, V ₃End IC ₃₀₄5 pin are low level, IC ₃₀₄End, its mouth is a low level, J ₂Be failure to actuate its open contact J _2-1Disconnect, alerting signal emitter (4) is not reported to the police because of there being power supply.

When the flame-out parking of driver, S disconnects, E ¹=0, because of in C ₃₁₀On voltage can not suddenly change U ₃₁Point is kept high level, and time-delay a period of time is (by C ₃₁₀, R ₃₁₀Determine, can be adjusted at 1 minute) after, U ₃₁Point becomes low level, U ₃₂Point is high level, U ₃₃Point is high level, and CTL is passed through in the SCR conducting ₂Mouth is given signal deteching circuit (3) power supply, and IC ₃₀₅A positive pulse is exported in work, passes through CTL ₁Mouth adds to the input end of password generative circuit (2), and making the 1N1 mouth is low level.After signal deteching circuit (3) gets electric work, microwave launcher tube is continuously to interior space launched microwave signal, according to the Doppler effect principle, nobody enters Ruo Chenei, the microwave signal of launching equates with the microwave signal frequency that reflects that the microwave receiving pipe receives, its frequency difference is zero, the output of low frequency amplifier (19) no signal, the 1N of voltage comparator (20) ₂Mouth is a high level, makes U ₂₁Point is high level, U ₂₅Point is low level, V ₃End IC ₃₀₄End J ₂Be failure to actuate open contact J _2-1Not adhesive, alerting signal emitter (4) non-transformer is not reported to the police.If there is the people into the car, must be movable in car, the microwave signal of emission and the microwave signal frequency of reception do not wait, and the difference of the two is Doppler frequency, and this frequency is by kinematic velocity and the direction decision of human body in car, below 100HZ, behind low-frequency signal amplifier (19), high-frequency signal is filtered out this low frequency signal with other high-frequency signals, after Doppler frequency signal is exaggerated, enter the inverting input of voltage comparator (20), 1N in voltage comparator (20) ₂Mouth is a low level, makes U ₂₁Point is low level, U ₂₅Point is high level, V ₃Conducting, IC ₃₀₄Conducting, J ₂Action, open contact J _2-1Adhesive, the power supply of connection alerting signal emitter (4), music integrated block IC ₄₀₁Produce audio alarming signal, this signal as modulation signal at IC ₄₀₂In to by IC ₄₀₂The CF signal frequency that produces is modulated and is formed modulated frequency signal, amplifies, then by V again ₄Carry out power gain, outwards send alerting signal, after receiving wire (26) reception of this alerting signal by alerting signal receiver (5), deliver to IC by emitting antenna (25) ₅₀₁Carry out that height is put, mixing, in put, amplitude limit, frequency discrimination, by mouth output audio alerting signal through IC ₅₀₂Carry out power gain, deliver to buzzer phone (29) and send alarm sound, notify the driver.Car stealer in the car must manage the cut-in point ignition source, at this moment E ¹=E, U ₃₁The point high potential, U ₃₂To active potential, SCR ends, CTL ₂The output of end non-transformer voltage, the power supply of cut-off signal testing circuit (3), the 1N of signal deteching circuit (3) ₂Mouth is a low level, thereby U ₂₁Point and U ₂₄Point is low level, U ₁₃So the point low level is U ₂₅The point high level, IC ₃₀₄Conducting, J ₂Action, its open contact J _2-1Adhesive, the power supply of connection alerting signal emitter (4), emitting antenna (25) continues outwards to send alerting signal, because E ¹=E, this power supply is through R ₃₀₃, VR ₃₁Give C ₃₀₃C is worked as in charging ₃₀₃Be charged to 1.6V when above (charging duration was transferred within half a minute), IC ₃₀₃Conducting, J ₁Action, normally closed contact J _1-1Disconnect, cut off automobile ignition coil (6), automobile flameout, open contact J _1-2Adhesive, automobile (7) pipe.If the car stealer does not reconcile oneself to failure, attempt start a car once more, then repeat said process.If automobile is met the bad person and is robbed car in the way of travelling, as long as the driver clicks four pseudo-code key K ₅-K ₈In any one, 1N then appears ₁The end low level, U ₁₁The point low level, U ₁₄The point high level, IC ₃₀₃Conducting, automobile flameout, automobile (7) pipe.

In the present embodiment, the main components and parts of circuit are selected as follows:

IC _1-1-IC _1-4Rest-set flip-flop CD4043

A ₁-A ₄Four-operational amplifier LM324

IC ₂₀₁Three ends amass into voltage stabilizer LM7809

An ANT microwave warning WQB-01

V ₃Silicon triode 9013

IC ₃₁₁-IC ₃₁₄Four or two input joint denial gate CD4001

IC ₃₀₃, IC ₃₀₄High power switch integrated circuit TWH8778

IC ₃₂₁-IC ₃₂₃Four or two input nand gate CD4011

IC ₃₀₅Time-base integrated circuit NE555

IC ₃₀₆Three terminal integrated voltage stabilizer LM7809

D ₃₀₂, D ₃₀₄Zener diode 2CW54

IC ₄₀₁Music integrated circuit KD9561

IC ₄₀₂Frequency modulation emission integrated circuit BA1404

IC ₄₀₃Three terminal integrated voltage stabilizer LM7809

V ₄Aerotron QD-30

D ₄₀₁3V zener diode 2CW

D ₅₀₁3V zener diode 2CW

IC ₅₀₁FM reception integrated circuit TDA7010T

IC ₅₀₂Power amplifier integrate circuit LM386

The frequency of operation that the alerting signal emitter of present embodiment and alerting signal receiver use is 140～148MHZ.

Claims

1, a kind of automobile burglar autoalarm is characterized in that comprising information processing and total control circuit (1), password generative circuit (2), signal deteching circuit (3), alerting signal emitter (4) and battery-powered alerting signal receiver (5) five parts by the priming supply power supply of automobile; Information processing comprises with the mouth of password generative circuit (2) with total control circuit (1) and being connected by series connected two two input joint denial gates and one the two code signal treatment circuit (8) that input nand gate constitutes, be connected by series connected two input joint denial gates with the mouth of signal deteching circuit (3), two input nand gates, the human body signal treatment circuit (9) that two input joint denial gates constitute, be connected by RC integrating circuit and high power switch integrated circuit with the mouth of code signal treatment circuit (8), first delay control circuit (10) that relay constitutes, be connected integrating circuit with the mouth of human body signal treatment circuit (9) by RC, the aerotron pre-amplification circuit, the high power switch integrated circuit, second delay control circuit (11) that relay constitutes, be connected with the priming supply of automobile by silicon control and on the silicon controlled trigger electrode bonded assembly RC integrating circuit, the 3rd delay control circuit (12) that not circuit constitutes is connected the single impulse generative circuit (13) that is made of univibrator with the mouth of the 3rd delay control circuit (12); Password generative circuit (2) comprises with the mouth of single impulse generative circuit (13) and is connected the current rectifying and wave filtering circuit (15) that is made of diode, resistance, electric capacity, the encode circuit (16) that is followed in series to form according to the order of key letter, rest-set flip-flop by four key letters and four rest-set flip-flops, be connected in parallel on four the pseudo-code keys (17) between the mouth of current supply circuit and current rectifying and wave filtering circuit (15), the reset terminal of four rest-set flip-flops is connected with the mouth of current rectifying and wave filtering circuit (15); Signal deteching circuit (3) comprises by a microwave launcher tube and the microwave warning head (18) that the microwave receiving pipe constitutes, low frequency amplifier (19) with the mouth resistance capacity coupling of microwave receiving pipe is made of integrated circuit is connected the voltage comparator (20) that is made of integrated circuit with the mouth of low frequency amplifier (19); Alerting signal emitter (4) comprises the audio modulation signal producer (22) that is made of music integrated circuit, the FM signal generator (23) that constitutes by the frequency modulation integrated circuit with the mouth resistance capacity coupling of audio modulation signal producer (22), be connected the FM signal amplifier (24) that constitutes by power discharging transistor with the mouth of FM signal generator (23), with the mouth bonded assembly emitting antenna (25) of FM signal amplifier (24); Alerting signal receiver (5) comprises receiving wire (26), be connected with receiving wire (26) that height is put by including, local oscillator, mixing, in put, FM signal treater (27) that the integrated package of amplitude limit, frequency-discriminating circuit constitutes, be connected the audio power amplifier (28) that constitutes by integrated circuit with the mouth of FM signal treater (27), with the mouth bonded assembly buzzer phone (29) of audio power amplifier (28).

2,, it is characterized in that in the common current supply circuit of code signal treatment circuit (8) and encode circuit (16), being connected to three terminal integrated voltage stabilizer (14) according to the said automobile burglar autoalarm of claim 1.

3,, it is characterized in that in the current supply circuit of signal deteching circuit (3), being connected to three terminal integrated voltage stabilizer (21) according to the said automobile burglar autoalarm of claim 1.

4,, it is characterized in that in the current supply circuit of alerting signal emitter (4), being connected to three terminal integrated voltage stabilizer (30) according to the said automobile burglar autoalarm of claim 1.