CN2388662Y - Anti-theft device - Google Patents

Abstract

The utility model discloses an anti-theft device, which mainly comprises a monitoring liaison circuit, a universal interface circuit, a speech alarm circuit, an alarm circuit, a wireless transceiver, an outer wire connecting terminal, a loudspeaker, a smoke tear bomb, an accumulator and an antenna. A coder, an OR gate circuit and a power supply voltage detecting circuit are used in the monitoring liaison circuit. The utility model is suitable for protective work such as theft prevention, robbery prevention, fire protection, etc. When the anti-theft device is used for the purpose of preventing theft, the anti-theft device can discover and judge the man-made breakage situations that the outer wire connecting circuit is sheared off, short-circuited, etc. When the anti-theft device is matched and connected with a corresponding detector and executive equipment, the anti-theft device can be used for small scale fire prevention, theft prevention and robbery prevention. The anti-theft device can also be used for a large wireless group control anti-theft network system.

Description

A kind of anti-theft device

The utility model relates to a kind of anti-theft device, and this device is used for wireless group control burglary-resisting system.

In bigger zone the joint defence device is installed, can be realized antitheft, anti-misfortune, fire prevention, reduce the loss that accident causes.Introduced a kind of supervisory system in " CYBERSPACE " 98 years the 6th phases " intelligent radio alarm monitoring system " literary composition, it is to adopt single-chip microcomputer and microcomputer to carry out control operation.During user's dwelling house generation alert, central monitor system sends verbal cue in display user's information, but the total system investment is big, the cost height.

Goal of the invention of the present utility model provides the anti-theft device that a kind of cost is low, function is complete.

The utility model comprises that mainly monitoring talk-back circuit and voltage detection circuit, common interface circuit, language warning circuit, warning circuit, wireless transceiver, external connection terminal, loudspeaker, accumulator, antenna, smog tear bomb form.

The monitoring talk-back circuit mainly is made up of coding and decoding integrated circuit BYM, two-way switch, NAND gate circuit, toggle switch, diode, resistance, electric capacity, voltage detection circuit DYJC.Toggle switch is the address end of link edition sign indicating number device respectively, operates the address code that these toggle switchs just can change this machine.Two-way switch is connected the data terminal of coder.Resistance and diode are formed the negative logic OR circuit, and the output terminal of OR circuit is connected with the data terminal of coder, and Sheffer stroke gate and electric capacity, resistance have been formed single stabilization delay circuit.The trigger end of monostable circuit is held by the TX/RX that two-way switch connects BYM, and the output terminal of monostable circuit connects the duty control end T/ R of BYM and the control end of two-way switch after Sheffer stroke gate.

Common interface circuit mainly is made up of alerting signal processing unit and two parts of logical circuit, the work of logical circuit does not influence the duty of alerting signal processing unit, remove relay contact, outside electric source line interface and the public port, common interface circuit also externally leads to signal input port and signal output port, and signal input port can connect sensor or detector.

The alerting signal processing unit is made up of four comparer U41-U44; wherein three voltage comparator U41-U43 are used for processing signals voltage, the input end protected location of being made up of resistance, electric capacity, diode, potentiometer between the signal input port 4D1 of common interface circuit and the input end of voltage comparator U41-U43.The output terminal of comparer U41-U43 is connected to voltage comparator U44 after through an OR circuit, output terminal at voltage comparator U41 and U43 leads to output signal port 4D3,4D4, output terminal in OR circuit also leads to signal outbound port 4D5, and the output signal of comparer U44 is sent to logical circuit.

Logical circuit is mainly by NAND gate circuit, diode, triode, relay and resistance capacitance are formed, three groups of resistance wherein, electric capacity has been formed the delay unit that absorbs disturbing pulse, delay unit powers on, with the counterattack delay unit, the signal of being sent here by above-mentioned voltage comparator U44 is connected to the input end of Sheffer stroke gate YF41 after through the delay unit that absorbs disturbing pulse, another input end of Sheffer stroke gate YF41 is connected with the delay unit that powers on, simultaneously through a diode D47, lead to signal input port 4D6, the output terminal of Sheffer stroke gate YF41 leads to signal output port 4D8, the base stage of triode G41 through after a resistance and the diode and two input ends of Sheffer stroke gate YF42 together be attempted by on the output terminal of YF41, the output terminal of Sheffer stroke gate YF42 also leads to signal output port 4D7, the input end of Sheffer stroke gate YF43 is through resistance R 411, be connected with the output terminal of Sheffer stroke gate YF42 behind the counterattack delay unit of capacitor C 45 and diode D410 composition, the output terminal of YF43 connects triode G42 through a resistance, the output of Sheffer stroke gate YF43 is externally drawn signal output port 4D10 after anti-phase through Sheffer stroke gate YF44, the collector of triode G41 and G42 drives relay J 41 and J42 respectively.Triode G41 has drawn signal input port 4D9 after through base resistance T412 and diode D49.

Described language warning circuit mainly is made up of language recording playback IC, power amplifier.

Described warning circuit mainly is made up of high-power FET of four NAND gate circuit, and wireless transceiver adopts the finished product in market.

The smog tear bomb adopt existing smog tear bomb.

The signal input port of externally drawing in the above-mentioned common interface circuit is such with the purposes of signal output port: signal input port 4D1 is connected the output signal that the connection terminal that is positioned at outside the casing is used for introducing outer face sensor or detector.Signal output port 4D3,4D4,4D5,4D7, signal input port 4D6,4D9 are directly or are connected with the data terminal of coder BYM indirectly, wherein 4D3,4D4,4D5 are used for sending alert to the system monitoring main frame, 4D6,4D9 are used for accepting the control command that monitoring host computer is sent, and 4D7 is used for reflecting the present duty of this machine to the system monitoring main frame.The trigger end that two other port 4D8 and 4D10 are connected to corresponding language warning circuit and alarm according to on-the-spot needs is used for triggering these circuit makes it enter the warning duty.According to actual needs, can there be the part port not do any connection in these ports, and be in vacant state.

Common interface circuit of the present utility model has just been formed one behind right sensors (or detector) and the corresponding actuating equipment and has been overlapped the warning device of perfect in shape and function through connecting after the above-mentioned connection again.If external detector is an intrusion detector, external actuating equipment is a video and sound recording equipment, and and monitoring host computer together after the networking work, then the utility model and they have been formed a cover together and are had and monitor and the anti-theft device of counterforce capability.In this device operation, if someone has entered the strick precaution scope of this intrusion detector, then the utility model will be reported and submitted the information that has the people to invade to monitoring host computer immediately, trigger the language warning circuit by corresponding signal output part in the common interface circuit simultaneously, the warning invador leaves this area, if the invador does not still leave warning region, after then passing through suitable time-delay, the utility model can trigger alarm, the alarm song that sends high-decibel is with the personnel around the notice, ignite the smog tear bomb simultaneously, force the invador to leave.

In actual applications, the utility model can adopt the polylith common interface circuit, connect the signal input port and the signal output port of these common interface circuits neatly according to needs on the spot, form a warning device that is with multiple preventing function and a plurality of strick precautions zone behind external suitable sensor (or detector) and the corresponding actuating equipment thereby reach.

Embodiment of the present utility model is as follows:

Fig. 1 is an external form synoptic diagram of the present utility model.

Fig. 2 is a structural representation of the present utility model.

Fig. 3 is an electrical schematic diagram of the present utility model.

Fig. 4 is the common interface circuit schematic diagram.

Fig. 5 is the voltage detection circuit schematic diagram.

Fig. 6 is a language warning circuit schematic diagram.

Fig. 7 is the warning circuit schematic diagram.

The utility model mainly comprises monitoring talk-back circuit 5, common interface circuit JK1-JK4 language warning circuit YY, warning circuit BJ, wireless transceiver FJ, external connection terminal 3D0-3D12, loudspeaker 1, high pitch loudspeaker 2, smog tear bomb YW1-YW2,15 storage batteries D Y, antenna 4.

The monitoring talk-back circuit is made up of coding and decoding integrated circuit (IC), two-way switch, NAND gate circuit, small-sized toggle switch, diode, resistance, electric capacity, voltage detection circuit DYJC.Electrical schematic diagram is seen Fig. 3, coder BYM and two-way switch K1-K6, Sheffer stroke gate YF31-YE34, and small-sized toggle switch of 10, resistance, electric capacity etc. have been formed the monitoring talk-back circuit, 10 toggle switchs connect the 10 bit address ends of BYM respectively, operate the address code that these toggle switches just can change this machine.The D1-D8 of BYM is a data terminal, and two-way switch K2-K6 is connected on the data terminal D1-D5.Like this, after having connected two-way switch on the data terminal of coder BYM, can make these data terminals have the dual-use function of the reception information and the information of transmission simultaneously.Resistance R 36 and diode D35-D38 and resistance R 35 and diode D31-D34 have formed two negative logic OR circuit, and the output terminal of two OR circuit is connected with data terminal D6, the D7 of BYM respectively.Data terminal with increased the quantity that data terminal receives information after OR circuit is connected, make D6, D7 reach the ability of four tunnel information of can accepting respectively.Sheffer stroke gate YF31, YF32, capacitor C 31, resistance R 32 have been formed monostable time-delay road jointly.When the stable state of this monostable circuit, the high level of YF32 output transfers the two-way low level to through YF33, YF34.This two-way low level makes two-way switch swing to the upper end, and acts on the duty selecting side T/ R end of coder, makes coder be in accepting state, the monitoring and inquiry information that the waiting system monitoring host computer is sent.The Query Information that main frame sends passes through wireless transceiver, constantly be sent to the IN input end of coder, when information coding that only receives and the address code of this machine are consistent, coder BYM just exports the steering order that receives by data terminal, the TX/RX of BYM end transfers low level to by high level simultaneously, this level variation of TX/RX end has triggered monostable circuit by two-way switch K1, make the YF32 output low level through YF33, YF34 transfers high level to makes two-way switch K1-K6 swing to the lower end, and high level is put in T/ R end duty selecting side, in the time BYM work change transmit status over to, the information that each data terminal D1-D8 is received sends it back monitoring host computer by wireless transceiver.Finish in the time internal information transmission that monostable circuit is delayed time, single stabilization delay circuit recovers stable state, makes coder BYM return accepting state, waits for the information of monitoring and inquiry next time of monitoring host computer.The data terminal D8 of coder BYM connects a voltage detection circuit DYJC.When system works, DYJC constantly examines the then variation of supply voltage, and at any time the abnormal conditions of power supply is sent to monitoring host computer.

The electrical schematic diagram of common interface circuit JK is seen Fig. 4, and it mainly is made up of alerting signal processing unit and logical circuit two parts, and the work of logical circuit does not influence the duty of alerting signal processing unit.Remove relay contact, power supply wiring mouth and altogether outside the male end mouth, common interface circuit JK also externally lead to signal input port (among Fig. 4 4D1,4D6,4D9) and signal output, (4D3,4D4,4D5,4D7,4D8,4D10 among Fig. 4).

The output of sensor (or detector) enters common interface circuit JK by signal input port 4D1, be provided with the adjustable voltage divider that resistance R 41 potentiometer W41 and W42 form in the input port 4D1, the output resistance of sensor and R41, W41, W42 forms the voltage signal that potential-divider network obtains altogether and enters U41 on W42, U42, three voltage comparators of U43, the capacitor C 41 of input end, C42, diode D41, D42 and resistance R 41, potentiometer W41, W42 is together to scurrying into the big voltage in the port, big current signal carries out by-passing filter, makes interface circuit can bear the impact of big electric signal.Regulator potentiometer W1 and W2 make the signal voltage that enters three comparers between the operation voltage of comparer U42 and U43, so the output of three comparers all is high level.When certain reason makes that the output resistance of external sensor is increased to certain value, the signal voltage that enters three comparers is elevated to the operation voltage of comparer U42, make U42 counter-rotating output low level alerting signal, this signal is by the port 4D5 output of interface circuit; When certain reason makes that the output resistance of external sensor reduces to certain value, perhaps outer circuit is for some reason during short circuit, the signal voltage that enters three comparers is lower than the operation voltage of comparer U43, U43 counter-rotating output low level alerting signal, this signal is exported simultaneously by the port 4D4 and the 4D5 of interface circuit; When certain reason makes that the circuit of external sensor disconnects, the operation voltage that the signal voltage that enters three comparers can raise above U41 makes U41 counter-rotating output low level alerting signal, and this signal is exported simultaneously by the output port 4D3 and the 4D5 of common interface circuit.As mentioned above, this sensor common interface circuit can connect has the various sensors that forward resistance changes and has negative sense resistance variations character or have forward voltage variation and reverse voltage qualitative change, and output interface is the range detector of normally opened contact and normally closed contact, and also can connect them in the series and parallel mode, the assembly of formation.The utility model is through this sensor common interface circuit, can connect the multiple intrusion detector of multiple fire detector (as temperature sensor, ion smoke detector etc.) (as infrared intrusion detector, the microwave intrusion detector of glass break sensors, magnetic switch intrusion detector, supersonic invasion detector, active or passive type and utilize two mirror that several different physical principles combine or three intrusion detectors that reflect etc.) respectively.Because the different alerting signal of this common interface circuit output is by three output port 4D3,4D4,4D5, send discriminatively, therefore can distinguish the sensor output resistance that is connected at the alerting signal port of this interface circuit output and become big, or circuit broken string, short circuit or and connect fault category such as other load.This sensor common interface circuit is applied in antitheft aspect is particularly suitable for judging artificial destruction situations such as external circuit is cut off, short circuit.Above-mentioned low level alerting signal is through the anti-phase logical circuit of being made up of YF41-YF44 and some electronic devices and components of sending into for high level of comparer U44.

The delay unit that powers on that in this logical circuit, includes the delay unit of the absorption disturbing pulse that diode D46, resistance R 49 and capacitor C 43 form, forms by resistance R 410, capacitor C 44, the counterattack delay unit of forming by diode D41D, resistance R 411, capacitor C 45.The Sheffer stroke gate YF41 of logical circuit, YF42, YF44 be respectively by signal output port 4D8,4D7,4D10 output high level signal, low level signal and the high level signal after time-delay when alarm condition, and these signals can be used for triggering dissimilar warning circuits, warning circuit respectively.In alarm condition, the triode G41 in the logical circuit drives relay J 41 adhesive immediately, drives relay J 42 adhesives through triode G42 after the time of the counterattack time-delay that R411, C45 determined.The contact of relay J 41 and J42 can be used for starting various circuit respectively, electrical equipment is finished and carried out action or counterattack action.Therefore this sensor common interface circuit and detector, counterattack device, performer are combined and just can be become a kind of antitheft (fire prevention) system or device that can work alone.

Sheffer stroke gate YF41 input end is connected to signal input port 4D6 through diode D47 in this logical circuit, when the 4D6 port is coupled with low level, YF41 has just blocked the path that alerting signal enters logical circuit, and relay J 41 that logical circuit drove in this case and J42 and above-mentioned output port 4D8,4D7,4D10 all can not react to some extent to alerting signal.We call the state of withdrawing a garrison to this duty of interface circuit, and the low level signal that is added on the port 4D6 is called the order of withdrawing a garrison.Status signal output terminal 4D7 output low level shows that circuit has entered the state of withdrawing a garrison withdrawing a garrison.Under the state of withdrawing a garrison or do not have at comparer U41, U42, U43 under the situation of output alarm signal,, just can make triode G41 drive the relay adhesive if apply low level signal at signal output port 4D9.Relay adhesive in this case, we are called adhesive by force.This low level signal that is added in port 4D9 is called adhesive order by force.

As mentioned above, this sensor common interface circuit is to export distinguishing signal by 4D3,4D4, three ports of 4D5 when alarm condition, and be provided with the port 4D9 that can accept adhesive order by force and the port 4D6 of the order of can accepting to withdraw a garrison, and have and can demonstrate the port 4D7 that whether is in the state of withdrawing a garrison, therefore this common interface circuit is adapted to operate in the big comprehensive system as accepting order that main frame sends and the parts that can feed back the extension set of more information to main frame very much.

The language warning circuit mainly is made up of language recording playback IC, power amplifier, and its electric principle is seen Fig. 6.

Warning circuit is mainly by four NAND gate circuit, and a high-power FET is formed, and its schematic diagram is seen Fig. 7.

The coding and decoding integrated circuit (IC) of monitoring talk-back circuit is selected UM3758-108A monolithic coding and decoding IC for use, and wireless transceiver is selected S﹠amp for use; P27A/B wireless transmission/reception assembly, two-way switch K1-K6 are selected two CD4053 analog switch IC for use, and NAND gate circuit is used CD4011 Sheffer stroke gate IC, and the comparer U41-U44 of alerting signal processing unit selects TL084 for use; Comparer U51, U52 in the voltage detection circuit select TL082 for use.

The smog tear bomb select for use FJ-2 type electricity to trigger the smog tear bomb.

When forming anti-theft firebreak device in the external equipment: fire detector uses U.S. product DS250TH/MN4W type smoke-temperature sensing detector, the perimeter intrusion detecting device is selected the infrared correlation intrusion detector of U.S.'s DS453 type for use, the control area intrusion detector is selected the two mirror intrusion detectors of Japanese F4053 type infrared microwave for use, the key area intrusion detector is selected U.S. DS835 type three mirror intrusion detectors for use, the colored time-delay of video and sound recording equipment choosing Japan UT-R1060 type video recorder, the used for fire-extinguishing equipment automatic sprinkler system.

The utility model has used four groups of above-mentioned common interface circuit JK altogether, these four groups of identical circuit are represented with JK1, JK2, JK3, JK4 respectively in accompanying drawing 3, their signal input port, signal output port, the quite flexible connection between relay contact etc. and each port of other circuit.Can make after connecting them and connected corresponding detector and actuating equipment according to following standard connected mode and the utlity model has: fire detection and alarm, perimeter intrusion detecting, the counterattack of control area break alarm and key preservation area intrusion alarm strike-back function, become a kind ofly comprehensively antitheftly, anti-rob, firebreak device.If suitably change each port of common interface circuit, relay contact etc. and each port of other circuit be connected, can also change these functions easily, for example cancel the fire detection and alarm function, increase to dual perimeter intrusion detecting; The regional break alarm of removing controls increases to the key preservation area intrusion alarm counterattack of two places ...

Make and the utlity model has: fire detection and alarm, perimeter intrusion detecting, the standard connected mode of counterattack of control area break alarm and key area intrusion alarm strike-back function is such:

Signal output port 4D5 among four groups of common interface circuit JK1 JK2 JK3 JK4 is connected with four data terminal D1, D3, D4, the D5 of coder BYM through behind the two-way switch respectively, the signal output port 4D3 of four groups of common interface circuits, through being connected with the data terminal D7 of BYM after diode D31, D32, D33, the D34, their signal output port 4D4 is connected through the data terminal D6 of diode D35, D36, D37, D38 and BYM respectively respectively.The signal output port 4D1 process diode D39 of common interface circuit JK1 has connected the trigger end 7D1 of alarm, and the signal input port 4D1 of JK1 is connected with external connection terminal 3D1,3D2, the 3D3 at the casing back side with the contact of relay J 42.After JK1 had connected fire detector and self-extinguishing equipment by the external connection terminal, just can form a cover can work alone, the unattended high-performance fire protection warning of the work of also networking, and the device of energy self-extinguishing.

The signal input port 4D1 of common interface circuit JK2, JK3, JK4 and the contact of relay J 41 are connected to external connection terminal 3D4-3D12 respectively; Their signal input port 4D9 is connected respectively to the lower contact of two-way switch K3, K4, K6; The signal output port 4D7 of interface circuit JK2 and the signal output port 4D10 of JK3 pass through the trigger end 7D1 that diode D310 and D311 are connected to alarm respectively; The contact of the relay J 42 of common interface circuit JK2 and JK3 has been connected the loop of detonating of smog tear bomb YW1 and YW2 respectively; Port 4D7, the 4D6 of interface circuit JK3 connected the upper and lower contact of two-way switch K5 respectively, makes JK3 can accept the order of withdrawing a garrison that main frame sends at any time, and can give main frame the information foldback of having withdrawn a garrison.In addition, the signal output port 4D8 of JK3 has connected the trigger end of language warning circuit YY.Like this as long as connection terminal 3D4,3D7,3D10 insert corresponding intrusion detector and just can form later on and have perimeter intrusion detecting outside, control area break alarm and counterattack, and the key preservation area intrusion alarm and the theft and robbery preventer of strikeing back.If connection terminal 3D5 and 3D6,3D8 and 3D9,3D11 and 3D12 insert the starting switch of video and sound recording or transmitter outside, this cover performance antitheft, Plunder-proof device will be more perfect so.

Consider that children or other people that might occur ignorant in unattended protection zone are entering the protection zone unintentionally; therefore; the utility model is provided with language warning circuit and warning circuit; the utility model is under the situation that standard connects, and common interface circuit JK3 connects this two circuit simultaneously.Before it is arranged on the trigger pip of language warning circuit YY, after the trigger pip of alarm is arranged on.Between two trigger pips delay unit is arranged, therefore, when alert takes place, triggers earlier the language warning circuit, make the invador withdraw from the protected location, through after one section time-delay if still do not withdraw from and do not send out high-decibel alarm sound equipment again, and drive counterattack equipment etc.

For illegal invasion person, the work of the present utility model with standard connected mode is such:

1. when the invador enters or passes through the warning line of circumference detector, the perimeter intrusion detecting device is imported common interface circuit JK4 to the information of experiencing by external connection terminal 3D10, so the data terminal D1 of coder receives signal and sends to main frame that relay J 41 adhesives of JK4 simultaneously start video and sound recording or emitter record criminal cases site.

2. after the invador enters the control area, the intrusion detector of control area is imported common interface circuit JK3 to the information of experiencing by external connection terminal 3D7, so coder obtains information and sends to main frame from data terminal D3, withdraw a garrison under the situation of order not receiving main frame, JK3 can start video and sound recording or dispensing device immediately, trigger the language warning circuit simultaneously, give a warning to the invador and impel it to withdraw from this zone.After after a while if the invador still fail to withdraw from this zone then JK3 can trigger warning horn, report to the police near people with the alarm song of high-decibel, the smog tear bomb that detonate simultaneously impel it to withdraw from this zone to stop invador's action.

3. after the invador enters the key preservation area; the key preservation area intrusion detector enters alarm condition; and alert is reported and submitted monitoring host computer by the data terminal D4 of common interface circuit JK2, BYM; triggering warning horn simultaneously reports to the police near personnel; behind the process reasonable time, do not leave yet as if the invador; then relay J 42 adhesives of interface circuit JK2, the smog tear bomb of the key preservation area of detonating force the invador to withdraw from this zone.

For a certain reason, in having used control area of the present utility model, need the permission personnel to enter, at this moment can send the order of withdrawing a garrison to the extension set of assigned address sign indicating number by the monitoring host computer of system, can receive immediately under the normal situation of system works that this extension set has been in the information of the state of withdrawing a garrison, at this moment, personnel enter the movable action that can not cause warning circuit, warning horn and smog tear bomb in this control area.Because common interface circuit is being in when withdrawing a garrison state; still can the control area be arranged into the information that enters and report and submit to monitoring host computer; so the situation that the operator on duty of being convenient to very much monitoring host computer understands in the control area at any time changes; the operator on duty can send radio signal by monitoring host computer when needed at any time; assign adhesive order by force to extension set of the present utility model; video and sound recording or transmitter that across-the-line starting is connected with interface circuit relay J 41 contacts; and the continuous miscellaneous equipment in J41 contact; at this time whether the adhesive of relay J 41 and interface circuit are in the state of withdrawing a garrison, and perhaps whether this protection zone has people's illegal invasion it doesn't matter.

Because the structure of common interface circuit makes monitoring host computer must constantly repeat to send to the order of withdrawing a garrison of certain control area, in case main frame has been stopped paying out the order of withdrawing a garrison, pass through so after R410 and the C44 delay time, this control area recovers to set up defences the state of alert automatically.In like manner, when certain cause specific takes place, be out of order as host computer system, or extension set wireless transmitter FJ, coder BYM, under the situation that the monitoring talk-back circuit breaks down, make interface circuit JK can not receive when withdrawing a garrison order, interface circuit JK can recover and remain on the state of alert of setting up defences equally automatically, and common with the sensitive detection parts that are connected together, counterattack device, performer, warning circuit, alarm circuit etc. as antitheft, a Plunder-proof device on a small scale, keep working alone.This characteristic has strengthened the anti-damage ability of system.

The utility model is under the standard connected mode; the protection zone of attaching most importance to is provided with the warning horn of high-decibel; smog tear bomb and common interface circuit JK2; when they are connected together with suitable intrusion detector; just formed a key area protective device with relatively independent ability to work; the key preservation area is not filled the personnel that permitted and is entered, so the 4D6 of common interface circuit JK2 end is vacant, makes it can not accept the order of withdrawing a garrison that main frame is sent.The extension set of the utility model is positioned in lays special stress on protecting the top, district; be used to the smog tear bomb emission port of key preservation area; perforate is in the bottom of casing (seeing YW2 among Fig. 2), the front of extension set makes the emission port of control area smog tear bomb to aim to be protected towards the control area control area (seeing YW1 among Fig. 2).

Because standard connected mode of the present utility model has connected corresponding detector and the later fire detection and alarm device of forming of actuating equipment, perimeter intrusion detecting device, control area break alarm counterattack device and key preservation area intrusion alarm counterattack device all have the characteristic of relatively independent work separately.Therefore the utility model is after connecting suitable detecting devices, can work alone as small-scale anti-theft device, also can utilize their monitoring talk-back circuit and wireless transceiver to form the large-scale antitheft network system of wireless team control co-ordination under the monitoring management of monitoring host computer with monitoring host computer by this device of many covers.

Claims (9)

1. anti-theft device, include monitoring talk-back circuit (5), common interface circuit (JK), language warning circuit (YY), warning circuit (BJ), wireless transceiver (FJ), external connection terminal (3D0-3D12), loudspeaker (1), high pitch loudspeaker (2), smog tear bomb YW1, YW2, storage batteries D Y, antenna (4) is characterized in that the OR-circuit that has used coder (BYM) and resistance (R35-R36) and diode (D31-D38) to form in the described monitoring talk-back circuit; The data terminal of coder is connected with OR-circuit; Described common interface circuit JK is made up of alerting signal processing unit and logical circuit two parts, the work of logical circuit does not influence the duty of alerting signal processing unit, remove power supply wiring mouth and public port, outside the relay contact, common interface circuit also externally leads to signal input port and signal output port.

2. a kind of anti-theft device as claimed in claim 1 is characterized in that described monitoring talk-back circuit (5) includes voltage detection circuit.

3. a kind of anti-theft device as claimed in claim 1 is characterized in that described coder data terminal links to each other with voltage detection circuit.

4. a kind of anti-theft device as claimed in claim 1 is characterized in that the data terminal of the coder in the described monitoring talk-back circuit (5) is connected with two-way switch.

5. a kind of anti-theft device as claimed in claim 1, the alerting signal processing unit that it is characterized in that described common interface circuit (JK) is made up of four voltage comparators, it uses three voltage comparator processing signals voltages simultaneously, so and the different alerting signal of generation is sent discriminatively by three signal output port 4D3,4D4,4D5.

6. a kind of anti-theft device as claimed in claim 1, the logical circuit that it is characterized in that described common interface circuit (JK) is made up of NAND gate circuit, diode, triode, relay and resistance capacitance, wherein formed the delay unit that absorbs disturbing pulse, the delay unit that powers on counterattack delay unit by resistance capacitance.

7. a kind of anti-theft device as claimed in claim 1, it is characterized in that in the described common interface circuit (JK), an input end that connects Sheffer stroke gate YF41 by the signal of voltage comparator U44 output after through the delay unit that absorbs disturbing pulse, another input end of YF41 is connected with the delay unit that powers on, and the output terminal that leads to signal input port 4D6, YF41 through a diode D47 leads to signal output port 4D8 simultaneously.

8. a kind of anti-theft device as claimed in claim 1, together and by on the output terminal of YF41, the output terminal of Sheffer stroke gate YF42 leads to signal output port 4D7 to the base stage that it is characterized in that triode G41 in the logical circuit of described common interface circuit (JK) through two input ends of resistance and Sheffer stroke gate YF42.

9. a kind of anti-theft device as claimed in claim 1, be connected with the output terminal of Sheffer stroke gate YF42 behind the counterattack delay unit that the input end that it is characterized in that Sheffer stroke gate YF43 in the logical circuit of described common interface circuit JK is formed through resistance R 411, capacitor C 45 and diode D410, the output terminal of YF43 connects triode G42 through a resistance, and signal output part 4D10 is externally drawn in the output of Sheffer stroke gate YF43 after Sheffer stroke gate YF44 is anti-phase.

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