CN2175443Y

CN2175443Y - All direction theft-proof alarming device

Info

Publication number: CN2175443Y
Application number: CN 93236662
Authority: CN
Inventors: 汪宏; 方文珠
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-04-16
Filing date: 1993-04-16
Publication date: 1994-08-24
Anticipated expiration: 2003-04-16

Abstract

The utility model relates to an anti-theft alarm device, composed of a remote-control opening circuit, a reception control power supply circuit, a sensing circuit, a shaping circuit, and an acoustic-optic alarm circuit. The utility model is characterized in that a microphone is connected in series in the constant current generation circuit of the sensing circuit. The output end of the constant current generation circuit is led out of the microphone, and the output end of the constant current generation circuit is connected with the low pass filter of the sensing circuit. The output end of the low pass filter is connected with the input end of the shaping circuit. The power supply end of the sensing circuit is connected with the output end of the reception control power supply circuit. The power supply end of the sensing circuit can be also connected through a manual switch with a low-voltage dc power supply directly.

Description

All direction theft-proof alarming device

The utility model relates to a kind of alarm, particularly a kind of burglar alarm.

At present, the sensor that burglar alarm both domestic and external adopted mainly contains oscillating mode, displacement type, infra red type, heat and releases kinds such as build, induction type, their ubiquitous problems are to have a monitoring dead angle, can only monitor a point or face as vibration, displacement type, infra red type can only monitor a line, heat is released body has one to monitor the angle, and their anti-theft effect is all limited, gives the burglar with opportunity.

The purpose of this utility model is exactly in order to address the above problem, and a kind of infrasonic wave omnibearing anti-theft warning device that does not have the monitoring dead angle is provided.

Technical solution of the present utility model:

A kind of omnibearing anti-theft warning device, it is made up of remote control open circuit, reception control power circuit, sensing circuit, shaping circuit, timing circuit, sound light alarming circuit, and wherein remote control open circuit is by scrambler IC ₂₃(model MC145026) and start button S thereof ₁, turn-off button S ₂, emergency button S ₃And by resistance R ₇₂, capacitor C ₃₆, C ₃₇, tunable capacitor VC ₄, high-frequency tube T ₁₀, little band emitting antenna TX ₁The high-frequency oscillating circuits of forming constitutes; (it is by inductance L by wireless receiving circuit to receive the control power circuit ₃, L ₄, capacitor C ₁₄, resistance R ₃₂Constitute, it receives the little band emitting antenna TX by the remote control open circuit ₁Wireless signal), (it is by capacitor C for the superregeneration oscillatory circuit ₁5-C ₁₈, tunable capacitor VC ₂, resistance R ₃₃-R ₃₆, inductance L ₅, diode D ₂, transistor T ₄Constitute), (it is by resistance R for plastic filter circuit ₃₇-R ₄₂, capacitor C ₁₉-C ₂₁, inverter ic ₁₀, IC ₁₁, IC ₁₂Constitute), decoding scheme IC ₁₃(model is MC145027), (it is by inverter ic to trigger holding circuit ₁₄, IC ₁₅, diode D ₂, D ₃, resistance R ₄₅, R ₄₆Constitute), (it is by resistance R for current amplification circuit ₄₇-R ₄₉, transistor T ₅, complex pipe T ₆, T ₇Constitute) form; Sensing circuit includes by resistance R ₁, R ₂, potentiometer W ₁, stabilivolt Z ₁The constant current of forming produces circuit and by resistance R ₆, R ₇, R ₈, capacitor C ₃, C ₄, C ₅, amplifier IC ₂The low-pass filter of forming; Shaping circuit is by resistance R ₁₀-R ₂₄, potentiometer W ₂, capacitor C ₆, comparer IC ₃-IC ₆Form; Timing circuit is by time base ic chip ₇(model is NE555), transistor T ₁, resistance R ₂₅, potentiometer W ₃, capacitor C ₇Form; Sound light alarming circuit is by the sound and light alarm ic chip ₈(model is HFC9561), capacitor C ₉, diode D ₁, resistance R ₂₈, transistor T ₂, inductance L ₁, piezoelectric ceramics YD ₁Form; The output of shaping circuit is from comparer IC ₆Output terminal to draw the input that connects timing circuit be transistor T ₁Base stage, the output of timing circuit is from time base ic chip ₇Output terminal 3 pin draw and connect sound and light alarm ic chip in the sound light alarming circuit ₈Power end V _DD, the output of sound light alarming circuit is from its LED ₁, LED ₂With piezoelectric ceramics YD ₁Send, it is characterized in that the constant current of sensing circuit produces serial connection microphone MIC in the circuit, the output of its constant current generation circuit is drawn from microphone MIC and is passed through capacitor C ₀With the input of low-pass filter in the sensing circuit be resistance R ₆An end connect, the output of low-pass filter is from amplifier IC ₂Output terminal draw, be two-way comparer IC as the output of sensing circuit and the input of shaping circuit ₄, IC ₅Input end connect, the anodal V+ of the power end of sensing circuit is complex pipe T with the output that receives current amplification circuit in the control power circuit ₆, T ₇Collector output connect.

The utility model adopts the infrasonic wave sensor, it can detect the certain wave that pressure reduction produced small in the air, its biggest advantage is not have the monitoring dead angle, and there is not any connecting line with the external world, can be placed in any old place in the automobile, also can be placed in the family room, no matter whether its space is airtight, all can finish burglar alarm, use very convenient automobile and family.The utility model circuit is simple, and cost is low, and anti-theft effect is very good.

Fig. 1 is a remote control open circuit electrical schematic diagram of the present utility model;

Fig. 2 is the electrical schematic diagram of reception control power circuit of the present utility model;

Fig. 3 is this practical main frame alarm electrical schematic diagram;

Fig. 4 is an extension set alarm electrical schematic diagram of the present utility model.

The course of work of the present utility model such as Fig. 1,2,3,4, should need to connect earlier the power supply in the main frame alarm, the anodal V+ of this power supply can directly be connected with low-voltage dc power supply by hand switch, if be used on the automobile, can directly be connected with automobile storage battery, if be used in family, the unit, can join the special DC power supply in addition, energized can make the main frame alarm in running order.The positive source V+ of main frame alarm also can control by the remote control open circuit, when need main frame alarm work, presses the start button S of remote control open circuit ₁, change scrambler IC ₂₃Address end A ₉State, make it be in noble potential, from IC ₂₃Output terminal 15 pin send one and start modulation signal, through high-frequency oscillating circuits from little band emitting antenna TX ₁Send and have the carrier wave that starts modulation signal, this carrier signal is received by the wireless receiving circuit that receives in the control power circuit, by the identification of superregeneration oscillatory circuit carrier frequency, handles through plastic filter circuit, from code translator IC ₁₃Output terminal D ₉Send start signal, this signal makes current amplification circuit be in conducting state by triggering holding circuit always, is complex pipe T from the output terminal of current amplification circuit ₆, T ₇Collector send power supply V+, its supplies with main frame alarm work, up to the shutoff button S of the moving remote control open circuit of peace ₂Shi Caineng cuts off power supply V+, and at this moment the main frame alarm is not worked.

After main frame alarm power supply V+ connects, promptly be in the vigilance task state, receive abnormal signal by sensing circuit.In the sensing circuit, its real estate is given birth to circuit and is preferably passed through by resistance R ₃-R ₅, capacitor C ₁, C ₂, amplifier IC ₁The match circuit of forming is connected with low-pass filter, and the output of constant current generation circuit is drawn from microphone MIC and passed through capacitor C ₀With the input of match circuit be resistance R ₃An end connect, the output of match circuit is from amplifier IC ₁Output terminal draw and connect lowly, the input of bandpass filter is a resistance R ₆An end.Constant current in the sensing circuit produces circuit and also can be made of amplifier, transistor, field effect transistor, constant current tube and auxiliary element thereof, and low-pass filter also can be the RC low-pass filter that is made of resistance capacitance.Main frame alarm of the present utility model can be placed in the automobile or family firmly indoor, the remote control open circuit can be made single little box body, it is carried by owner, when owner presses start button S ₁After, the main frame alarm just is in the vigilance task state, constant current in its sensing circuit produces circuit and provides working current to microphone MIC, this moment is if having the burglar to force open the door or break window into the car or indoor, then small pressure reduction can take place in the air pressure of car interior or indoor (no matter whether airtight it is original) thereupon, owing to making, the existence of this pressure reduction produces motion between the air molecule, form infrasonic wave, and spread all in the whole car rapidly or the interior space, after this sub-sonic information is received by the microphone MIC of main frame alarm sensing circuit, just carry out Signal Matching by match circuit, amplify by low-pass filter filtering again, because of microphone MIC can receive several hertz of acoustic signals to several KHz, for distinguishing infrasonic wave and other sound wave,, receive other signal to prevent microphone MIC misconnection so adopt low-pass filter filtering, the electric signal identical with the infrasonic wave frequency after low-pass filter filtering is amplified sent into shaping circuit relatively, after the shaping, deliver to timing circuit IC again ₇, IC then ₇Sound and light alarm ic chip to sound light alarming circuit ₈Working power is provided, makes LED ₁, LED ₂With piezoelectric ceramics YD ₁Luminous and sounding type is reported to the police, and plays the effect of burglar alarm.

Situations such as the utility model is for strengthening the warning effect, prevents that Che Nei or the indoor little outside of main frame alarm sound from can't hear, perhaps the main frame alarm is destroyed can be drawn by scrambler IC in the output of timing circuit ₉The coding circuit that (model is MC145026) formed and by capacitor C ₁₁-C ₁₃, variable capacitance VC ₁, inductance L ₂, transistor T ₃With emitting antenna TX ₂The radio transmitter of forming, the output of its timing circuit is from basic ic chip at that time ₇Output terminal 3 pin send and meet scrambler IC ₉Power end V _DD, the output of coding circuit is from IC ₉Output terminal 15 pin to draw the input that connects radio transmitter be capacitor C ₁₁An end, the output of radio transmitter is from emitting antenna TX ₂Send, reporting to the police for extension set receives, and the number of extension set alarm can be set as required.The extension set alarm can be installed in and reach on hull bottom surface or the outdoor wall in the duty room, and the wireless alarm signal that it utilizes the main frame alarm to send triggers the extension set alarm equipment alarm, even the main frame alarm is destroyed, the extension set alarm still is in alarm condition.The extension set alarm is by resistance R ₅₀, capacitor C ₂₄, inductance L ₆, L ₇The wireless receiving circuit of forming is by capacitor C ₂₅-C ₂₈, variable capacitance VC ₃, resistance R ₅₁-R ₅₄, inductance L ₈, transistor T ₈, diode D ₀The superregeneration oscillatory circuit of forming is by capacitor C ₂₉-C ₃1, resistance R ₅₆-R ₆₀, inverter ic ₁₆, IC ₁₇, IC ₁₈The filtering shaping circuit of forming is by code translator IC ₁₉The decoding scheme that (model is MC145027) and auxiliary resistance electric capacity thereof are formed is by diode D ₅, D ₆, resistance R ₆₃-R ₆₅, inverter ic ₂₀, IC ₂₁The triggering holding circuit of forming is by resistance R ₆₇, capacitor C ₃₄, transistor T ₉, the sound and light alarm ic chip ₂₂The warning circuit that (model is HFC9561), piezoelectric ceramics YD form constitutes.Its course of work is, at timer IC ₇To main frame sound and light alarm ic chip ₈When power supply is provided, again to scrambler IC ₉Provide working power, IC ₉Sending the alarm code signal handles from emitting antenna TX through radio transmitter ₂Send, receive, after the wireless receiving circuit of extension set alarm receives the alarming wireless signal,, send filtering shaping circuit to handle, through decoding scheme IC through the identification of superregeneration oscillatory circuit for the extension set alarm ₁₉Decoding is from IC ₁₉Data output end D ₆Send alerting signal, it is by diode D ₆Make and trigger holding circuit output noble potential, to warning circuit IC ₂₂Provide working power, then piezoelectric ceramics YD ₂Sounding alarm is told in the car of outside or the indoor burglar of having, and plays the effect of dual warning.When not needing the main frame alarm work, only need press the shutoff button S of remote control open circuit ₂, can cut off the power supply V+ of main frame alarm, make it be in off position.

When the chance emergency condition needs others to help in running into robbery or house, can directly press the emergency button S of remote control open circuit ₃, make scrambler IC ₃Address input end A ₆Be in noble potential, IC ₃Output terminal 15 human hair combing wastes go out an emergent coded signal, it is from little band emitting antenna TX ₁Send, this emergent coded signal is directly received by the wireless receiving circuit of extension set alarm, through identification, shaping, decoding, triggers warning circuit IC ₂₂Work makes piezoelectric ceramics YD ₂Sounding alarm, the notice outside has emergency condition to take place.

Claims

1, a kind of omnibearing anti-theft warning device, it is made up of remote control open circuit, reception control power circuit, sensing circuit, shaping circuit, timing circuit, sound light alarming circuit, and wherein remote control open circuit is by scrambler IC ₂₃(model MC145026) and start button S thereof ₁, turn-off button S ₂, emergency button S ₃And by resistance R ₇₂, capacitor C ₃₆, C ₃₇, tunable capacitor VC ₄, high-frequency tube T ₁₀, little band emitting antenna TX ₁The high-frequency oscillating circuits of forming constitutes; (it is by inductance L by wireless receiving circuit to receive the control power circuit ₃, L ₄, capacitor C ₁₄, resistance R ₃₂Constitute, it receives the little band emitting antenna TX by the remote control open circuit ₁Wireless signal), (it is by capacitor C for the superregeneration oscillatory circuit ₁₅-C ₁₈, tunable capacitor VC ₂, resistance R ₃₃-R ₃₆, inductance L ₅, diode D ₂, transistor T ₄Constitute), (it is by resistance R for plastic filter circuit ₃₇-R ₄₂, capacitor C ₁₉-C ₂₁, inverter ic ₁₀, IC ₁₁, IC ₁₂Constitute), decoding scheme IC ₁₃(model is MC145027), (it is by inverter ic to trigger holding circuit ₁₄, IC ₁₅, diode D ₂, D ₃, resistance R ₄₅, R ₄₆Constitute), (it is by resistance R for current amplification circuit ₄₇-R ₄₉, transistor T ₅, complex pipe T ₆, T ₇Constitute) form; Sensing circuit includes by resistance R ₁, R ₂, potentiometer W ₁, stabilivolt Z ₁The constant current of forming produces circuit and by resistance R ₆, R ₇, R ₈, capacitor C ₃, C ₄, C ₅, amplifier IC ₂The low-pass filter of forming; Shaping circuit is by resistance R ₁₀-R ₂₄, potentiometer W ₂, capacitor C ₆, comparer IC ₃-IC ₆Form; Timing circuit is by time base ic chip ₇(model is NE555), transistor T ₁, resistance R ₂₅, potentiometer W ₃, capacitor C ₇Form; Sound light alarming circuit is by the sound and light alarm ic chip ₈(model is HFC9561), capacitor C ₉, diode D ₁, resistance R ₂₈, transistor T ₂, inductance L ₁, piezoelectric ceramics YD ₁Form; The output of shaping circuit is from comparer IC ₆Output terminal to draw the input that connects timing circuit be transistor T ₁Base stage, the output of timing circuit is from time base ic chip ₇Output terminal 3 pin draw and connect sound and light alarm ic chip in the sound light alarming circuit ₈Power end V _DD, the output of sound light alarming circuit is from its LED ₁, LED ₂With piezoelectric ceramics YD ₁Send, it is characterized in that the constant current of sensing circuit produces serial connection microphone MIC in the circuit, the output of its constant current generation circuit is drawn from microphone MIC and is passed through capacitor C ₀With the input of low-pass filter in the sensing circuit be resistance R ₆An end connect, the output of low-pass filter is from amplifier IC ₂Output terminal draw, be two-way comparer IC as the output of sensing circuit and the input of shaping circuit ₄, IC ₅Input end connect, the anodal V+ of the power end of sensing circuit is complex pipe T with the output that receives current amplification circuit in the control power circuit ₆, T ₇Collector output connect.

By the described omnibearing anti-theft warning device of claim 1, it is characterized in that in sensing circuit that 2, its constant current produces circuit and preferably passes through by resistance R ₃-R ₅, capacitor C ₁, C ₂, amplifier IC ₁The match circuit of forming is connected with low-pass filter, and the output of constant current generation circuit is drawn from microphone MIC and passed through capacitor C ₀With the input of match circuit be resistance R ₃An end connect, the output of match circuit is from amplifier IC ₁Output terminal to draw the input that connects low-pass filter be resistance R ₆An end.

By the described omnibearing anti-theft warning device of claim 1, it is characterized in that in sensing circuit that 3, constant current produces circuit and also can be made of amplifier, transistor, field effect transistor, constant current tube and auxiliary element thereof; Low-pass filter also can be the RC low-pass filter that is made of resistance capacitance.

4,, it is characterized in that the anodal V+ of power end of sensing circuit also can directly be connected with low-voltage dc power supply by hand switch by the described omnibearing anti-theft warning device of claim 1.

5, by the described omnibearing anti-theft warning device of claim 1, it is characterized in that also can drawing by scrambler IC from the output of timing circuit ₉The coding circuit that (model is MC145026) formed and by capacitor C ₁₁-C ₁₃, variable capacitance VC ₁, inductance L ₂, transistor T ₃With emitting antenna TX ₂The radio transmitter of forming, the output of its timing circuit is from basic ic chip at that time ₇Output terminal 3 pin send and meet scrambler IC ₉Power end V _DD, the output of coding circuit is from IC ₉Output terminal 15 pin to draw the input that connects radio transmitter be capacitor C ₁₁An end, the output of radio transmitter is from emitting antenna TX ₂Send, reporting to the police for extension set receives, and the number of extension set alarm can be set as required.

6, by the described omnibearing anti-theft warning device of claim 4, it is characterized in that the extension set alarm is by resistance R ₅₀, capacitor C ₂₄, inductance L ₆, L ₇The wireless receiving circuit of forming is by capacitor C ₂₅-C ₂₈, variable capacitance VC ₃, resistance R ₅₁-R ₅₄, inductance L ₈, transistor T ₈, diode D ₀The superregeneration oscillatory circuit of forming is by capacitor C ₂₉-C ₃₁, resistance R ₅₆-R ₆₀, inverter ic ₁₆, IC ₁₇, IC ₁₈The filtering shaping circuit of forming is by code translator IC ₁₉The decoding scheme that (model is MC145027) and auxiliary resistance electric capacity thereof are formed is by diode D ₅, D ₆, resistance R ₆₃-R ₆₅, inverter ic ₂₀, IC ₂₁The triggering holding circuit of forming is by resistance R ₆₇, capacitor C ₃₄, transistor T ₉, the sound and light alarm ic chip ₂₂The warning circuit that (model is HFC9561), piezoelectric ceramics YD form constitutes.