CN2263806Y

CN2263806Y - Wireless anti-steal warner for safe

Info

Publication number: CN2263806Y
Application number: CN 96234272
Authority: CN
Inventors: 潘昌盛
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-02-12
Filing date: 1996-02-12
Publication date: 1997-10-01
Anticipated expiration: 2006-02-12

Abstract

The utility model relates to a wireless anti-theft alarm for a strong box, which is composed of a transmitter and a receiver. The utility model is characterized in that the transmitting circuit is composed of a direct current power supply E1 and an oscillating circuit which is provided with a jogging sensor TAM 01, an encoder LM, an inductor, a capacitor and a transistor T1; the receiving circuit is composed of a signal receiving unit (1), a signal amplifying unit (2), a decoding unit (3), a power amplifying unit (4) and a direct current power supply E2. The characteristics can make the transmitter of the wireless anti-theft alarm send out signals to penetrate a shielding body of a metal cabinet body of a strong box; the receiver receives signals and alarms by wireless in the distance. The utility model has the advantages of high efficiency of transmission, high efficiency of reception and convenient installation; the utility model is suitable for the protection of various box bodies and valuables.

Description

Safety cabinet wireless anti-theft alarming device

The utility model relates to warning device, particularly a kind of safety cabinet wireless anti-theft alarming device.

In background technology, be used for the safety cabinet burglar alarm, usually all be to adopt onsite alarming, its warning device is installed on the safety cabinet, behavior alarm itself can give the alarm in case commit theft, inform the Security Services, the shortcoming of this device is that alarm song has also been reminded the burglar simultaneously, easily the burglar is frightened away.

The purpose of this utility model is in order to solve the deficiency that the above-mentioned background technology exists, to propose a kind of safety cabinet wireless anti-theft alarming device that remote-wireless receives warning that has, it being transmitted can penetrate the shield of safety cabinet metal cabinet.

The purpose of this utility model is achieved in that a kind of safety cabinet wireless anti-theft alarming device, form by transmitter and receiver, transmitter is made of transmitter housing and radiating circuit, receiver is made of receiver housing and receiving circuit, receiving circuit is by signal receiving unit (1), signal amplification unit (2), decoding unit (3), power amplifier unit (4) and direct supply E2 form, its special character is that the radiating circuit of described transmitter is by direct supply E1, active fine motion sensor TAM01, scrambler LM, triode T1, tunable capacitor C1, capacitor C 2, C3, C4, inductance L and resistance R 1 are formed, wherein, the positive pole of active fine motion sensor TAM01 joins with positive pole and inductance L one end of direct supply E1 respectively, the negative pole of negative pole and direct supply E1 joins, the pulse output end of active fine motion sensor TAM01 and the input end of scrambler LM join, the output of scrambler LM is joined through resistance R 1 and the base stage of triode T1, the negative pole of the emitter of triode T1 and direct supply E1 joins, the common port a point of the collector of triode T1 and tunable capacitor C1 and capacitor C 2 joins, the common port b point of tunable capacitor C1 and capacitor C 2 joins with the inductance L other end and capacitor C 3 respectively, capacitor C 3 is joined through capacitor C 4 and direct supply E1 negative pole, emitting antenna N1 and a, 2 of b link: in described receiver receiving circuit signal receiving unit (1), the common port d point of the collector of triode T2 and tunable capacitor C6 and capacitor C 7 joins, tunable capacitor C6 and capacitor C 7 are joined through capacitor C 8 and c point, the emitter of triode T2 joins through the negative pole of variable impedance element TA108 and direct supply E2, capacitor C 5 is connected between the collector and emitter of triode T2, the base stage of triode T2 is connected with two the tunnel, one the tunnel joins with the positive pole of diode D1, another road between capacitor C 9 and capacitor C 10 common port e point and the positive pole of resistance R 4 and direct supply E2 join, the negative pole of diode D1 joins through the negative pole of resistance R 3 with direct supply E2, the other end of capacitor C 9 and c point join, the negative pole of the other end of capacitor C 10 and direct supply E2 joins, receiving antenna N2 is connected across between c point and the d point, and the input end of c point and signal amplification unit (2) links.

During use, transmitter places in the safety cabinet, and receiver can be positioned over 200m to report to the police in the interior distance.

Owing to adopted such scheme, especially adopted the structure of radiating circuit, signal receiving unit, make that the advantage that the utlity model has is conspicuous: 1. the receiving efficiency of the emission efficiency of transmitter and receiver has had large increase, and the signal that makes transmitter send can penetrate the metallic shield body of safety cabinet cabinet; 2. can report to the police in the remote-wireless received signal, disguised strong, be difficult for making the burglar to discover, avoid the burglar that alarm is destroyed; 3. structure easy for installation, as to need not to change safety cabinet during installation need only place it in and gets final product in the safety cabinet: 4. applied widely, decapacitation is protected outside the various safety cabinets, also can protect various file cabinets, desk, valuables etc.

Below in conjunction with embodiment shown in the drawings the utility model is described in further detail:

Fig. 1: transmitter radiating circuit figure.

Fig. 2: receiver receiving circuit figure.

With reference to Fig. 1, transmitter is made of transmitter housing (not shown) and radiating circuit, radiating circuit is by direct supply E1 (6V), active fine motion sensor TAM01 (produced by the Te An of Wuhan City trading company and provide by this product, can buy this product in the said firm), scrambler LM (adopting the LM8020 integrated package), triode T1, tunable capacitor C1, capacitor C 2, C3, C4, inductance L and resistance R 1 are formed, wherein, the positive pole of active fine motion sensor TAM01 joins with the positive pole and inductance L one end of direct supply respectively, the negative pole of negative pole and direct supply E1 joins, 10 pin and 8 pin that the pulse output end of active fine motion sensor TAM01 and scrambler LM8020 are coupled to each other together join, be connected a resistance R 2 between 15 pin of LM8020 and 16 pin, 14 pin of LM8020 and 19 pin are linked together and join with the negative pole of direct supply E1,17 pin of LM8020 are output terminals, it joins through resistance R 1 and the base stage of triode T1, the negative pole of the emitter of triode T1 and direct supply E1 joins, the common port a point of the collector of triode T1 and tunable capacitor C1 and capacitor C 2 joins, the common port b point of tunable capacitor C1 and capacitor C 2 joins with the inductance L other end and capacitor C 3 respectively, capacitor C 3 is joined through the negative pole of capacitor C 4 with direct supply E1, a, 2 of b and emitting antenna N1 link, and a power switch K1 also is housed in entire circuit.

In foregoing circuit, emitting antenna can utilize the metal cabinet of safety cabinet, that is to say 2 of a in the radiating circuit, b are contacted with the metal cabinet of safety cabinet, makes the metal cabinet as antenna.Active fine motion sensor TAM01 can place on the circuit board with the radiating circuit other parts together, be positioned in the transmitter housing, its principle of work is can produce vibration when safety cabinet is prized or when stolen, make active fine motion sensor TAM01 send pulse signal, the encoded device LM of this pulse signal coding back is amplified in by triode T1 in the oscillation circuit of inductance and electric capacity and produces vibration, simultaneously, radiating circuit forces inductance L to produce resonance on active fine motion sensor, thereby makes the emission efficiency of transmitter that large increase arranged.

In foregoing circuit, tunable capacitor C1 is 2-10P, and capacitor C 2 is 10P, and capacitor C 3 is 3.9P, and capacitor C 4 is 3.9P, and inductance L is 3.3 μ H, and resistance R 1 is 47K, and resistance R 2 is 200K.

With reference to Fig. 2, receiver is made of receiver housing (not shown) and receiving circuit, and receiving circuit is by signal receiving unit 1, and signal amplification unit 2, decoding unit 3, power amplifier unit 4 and direct supply E2 form.In described signal receiving unit 1, the common port d point of the collector of triode T2 and tunable capacitor C6 and capacitor C 7 joins, tunable capacitor C6 and capacitor C 7 are joined through capacitor C 8 and c point, the emitter of triode T2 joins through the negative pole of variable impedance element TA108 and direct supply E2, capacitor C 5 is connected between the collector and emitter of triode T2, the base stage of triode T2 is connected with two the tunnel, one the tunnel joins with the positive pole of diode D1, another road between capacitor C 9 and capacitor C 10 common port e point and the positive pole of resistance R 4 and direct supply E2 join, the negative pole of diode D1 joins through the negative pole of resistance R 3 with direct supply E2, the other end of capacitor C 9 and c point join, the negative pole of the other end of capacitor C 10 and direct supply E2 joins, receiving antenna N2 is connected across between c point and the d point, and the c point is the output terminal of signal receiving unit 1.

In described signal amplification unit 2, the base stage of triode T3 is connected in three tunnel: one tunnel negative pole through capacitor C 12 and direct supply E2 and joins: another road joins through the collector of resistance R 7 with triode T3: last road is through capacitor C 11, resistance R 6, the positive pole of resistance R 5 and power supply E2 joins, common port between resistance R 5 and the resistance R 6 and the output terminal c point in the signal receiving unit 1 join, the collector of triode T3 joins through the positive pole of resistance R 8 with power supply E2 respectively, the negative pole of capacitor C 13 and power supply E2 joins, resistance R 9 is joined with the base stage of triode T4, the negative pole of the emitter of triode T4 and power supply E2 joins, and the collector of triode T4 joins through the positive pole of resistance R 10 with power supply E2.

That described decoding unit 3 adopts is integrated of LM8021, the collector of triode T4 joins in these integrated 14 pin and the signal amplification unit 2, joins by resistance R 12 between 15 pin and 16 pin, and the negative pole of 9 pin and power supply E2 joins, 18 pin and power supply E2 positive pole join, and 11 pin are output terminals.

In described power amplifier unit 4, the base stage of triode T5 is joined through resistance R 11 and f point, the f point joins by output terminal 11 pin among integrated of diode D2 and the LM8021 respectively, join by the negative pole of capacitor C 14 with power supply E2, the negative pole of the emitter of triode T5 and power supply E2 joins, and the collector of triode T5 joins through the positive pole of loudspeaker Q and power supply E2.

In the receiving circuit of receiver, the resistance value of variable impedance element TA108 is the function of frequency, plays the impedance matching effect, can make receiving efficiency improve 2-3 doubly by its high-frequency resistance performance, this element is produced by Wuhan City crossdrift scientific and technological development company, can buy in the said firm.Capacitor C 5 is 5P, and tunable capacitor C6 is 2-10P, and capacitor C 7 is 10P, capacitor C 8 is 20P, and capacitor C 9 is 22P, and capacitor C 10 is 1500P, capacitor C 11 is 1uf, and capacitor C 12 is 1500P, and capacitor C 13 is 1500P, resistance R 3 is 7.3K, and resistance R 4 is 200K, and resistance R 5 is 10K, resistance R 6 is 10K, resistance R 7 is 2M, and resistance R 8 is 10K, and resistance R 9 is 2K.A power switch K2 also is housed in whole receiving circuit.

The utility model applicant has produced product, after tested, the quiescent current≤2mA of its transmitter, the quiescent current≤1.5mA of receiver, signal receives air line distance≤200m, and its performance has reached goal of the invention fully.

Claims

1. safety cabinet wireless anti-theft alarming device, form by transmitter and receiver, transmitter is made of housing and radiating circuit, receiver is made of housing and receiving circuit, receiving circuit is made up of signal receiving unit (1), signal amplification unit (2), decoding unit (3), power amplifier unit (4) and direct supply E2, it is characterized in that:

A, the radiating circuit of described transmitter is by direct supply E1, active fine motion sensor TAM01, scrambler LM, triode T1, tunable capacitor C1, capacitor C 2, C3, C4, inductance L and resistance R 1 are formed, wherein, the positive pole of active fine motion sensor TAM01 joins with the positive pole and inductance L one end of direct supply respectively, the negative pole of negative pole and direct supply E1 joins, the pulse output end of active fine motion sensor TAM01 and the input end of scrambler LM join, the output of scrambler LM is joined through resistance R 1 and the base stage of triode T1, the negative pole of the emitter of triode T1 and direct supply E1 joins, the common port a point of the collector of triode T1 and tunable capacitor C1 and capacitor C 2 joins, the common point b point of tunable capacitor C1 and capacitor C 2 joins with the inductance L other end and capacitor C 3 respectively, capacitor C 3 is joined a through capacitor C 4 and direct supply E1 negative pole, 2 of b and emitting antenna N1 link.

B, in described receiver receiving circuit signal receiving unit (1), the common port d point of the collector of triode T2 and tunable capacitor C6 and capacitor C 7 joins, tunable capacitor C6 and capacitor C 7 are joined through capacitor C 8 and c point, the emitter of triode T2 joins through the negative pole of variable impedance element TA108 and direct supply E2, capacitor C 5 is connected between the collector and emitter of triode T2, the base stage of triode T2 is connected with two the tunnel, one the tunnel joins with the positive pole of diode D1, another road between capacitor C 9 and capacitor C 10 common port e point and the positive pole of resistance R 4 and direct supply E2 join, the negative pole of diode D1 joins through the negative pole of resistance R 3 with direct supply E2, the other end of capacitor C 9 and c point join, the negative pole of the other end of capacitor C 10 and direct supply E2 joins, receiving antenna N2 is connected across between c point and the d point, and the input end of c point and signal amplification unit (2) links.

2. according to the described safety cabinet wireless anti-theft alarming of claim 1 device, it is characterized in that described emitting antenna is a safety cabinet metal cabinet.