CN2245240Y

CN2245240Y - Wireless theft-proof alarm device

Info

Publication number: CN2245240Y
Application number: CN 95214148
Authority: CN
Inventors: 刘国华
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-06-05
Filing date: 1995-06-05
Publication date: 1997-01-15
Anticipated expiration: 2005-06-05

Abstract

The utility model discloses a wireless theft-proof alarm, which comprises a transmitting assembly and a receiving assembly. The transmitting assembly of the wireless theft-proof alarm is formed by the connection in sequence of a sensor, a triggering delay circuit, an encoder and a radio-frequency oscillation circuit; the receiving assembly of the wireless theft-proof alarm is formed by the connection in sequence of a high frequency amplifier circuit, a resonating circuit, an amplification shaping circuit, a decoder, a triggering delay circuit and a sound and light alarm circuit. The utility model has the advantages of small size, integration, reliable alarm, 120 meters effective radius for alarm, low cost and electricity saving; the transmitting assembly gives an alarm once by working for a plurality of seconds without interference on other radio equipment; the transmitting assembly adopts non-contact operation and can be installed in an inflammable and explosive place.

Description

The wireless anti-theft alarming device

The utility model relates to a kind of radiotelegraph installation.

Present radio alarming installation cost height, power consumption is also higher, is not suitable for family and uses.

The purpose of this utility model is to provide that a kind of cost is low, power consumptive province, reliable alarm wireless anti-theft alarming device.

The technical solution of the utility model is as follows:

This burglar alarm comprises emitting module and receiving unit, and its emitting module is to be connected and composed successively by sensor, triggering delay circuit, scrambler, strength circuit; Its receiving unit is to be connected and composed successively by High Amplifier Circuit, resonant circuit, amplification and rectification circuit, demoder, triggering delay circuit and sound light alarming circuit;

Said emitting module is a termination power negative pole of sensor, and the other end divides two-way, and one the tunnel through resistance R ₁Connect positive source, the phase inverter F of delay circuit is sent out in another road contact ₁Input end, this circuit is an integrated circuit (IC) ₁And the monostable circuit of peripheral cell composition, phase inverter F ₁, F ₂Polyphone is through diode D ₁Meet phase inverter F ₃Input end and diode D ₂Negative pole, phase inverter F ₃Output termination capacitor C ₁Negative pole, capacitor C ₁Positive pole meet phase inverter F ₄Input end and through resistance R ₂Connect the positive pole of power supply, phase inverter F ₄Output termination phase inverter F ₅Input end and diode D ₂Positive pole, phase inverter F ₅, F ₆Series connection is for scrambler provides enough big working current, F ₆The input end of output termination scrambler, the negative supply pin of scrambler is through photoelectric diode D ₃Connect power cathode, the output terminal of scrambler is through resistance R ₄Meet triode V ₁Base stage and capacitor C ₂, triode V ₁Capacitor C ₂, C ₃, C ₄, C ₅And coil L ₁, L ₂Form the strength circuit, this circuit is line incessanly;

Said receiving unit is that antenna is through capacitor C ₁Meet triode V ₁Emitter-base bandgap grading, triode V ₁And peripheral original paper is formed broadband High Amplifier Circuit, the triode V of this circuit ₁The current collection level through capacitor C ₄Access is by triode V ₂, capacitor C ₅, C ₆, C ₇, resistance R ₅And coil L ₁, L ₂The resonant circuit of forming, this circuit coils L ₃, resistance R ₉And R ₁₀Insert the integrated circuit (IC) of amplification and rectification circuit _1-1The the 6th and the 5th pin of LM324, this integrated circuit the 7th pin output meets the integrated circuit (IC) I that model is LM324 _1-2Input pin the 3rd pin, the output of its 1st pin inserts demoder IC ₂Input pin, the output pin of demoder is through diode D ₂The monostable integrated circuit (IC) of delay circuit is sent out in contact ₃Input end, the output terminal of this monostable circuit divides two-way, the one tunnel through resistance R ₁₉And integrated circuit musical film IC ₄Meet loudspeaker BL, another road is through starting to control the clamper diode D that makes usefulness ₄Meet phase inverter F ₅, F ₆The multivibrator of forming, phase inverter F ₆Output terminal connect photoelectric alarm device D ₅D ₅Negative pole connect the negative pole of power supply.

Advantage of the present utility model is: 1, package unit miniaturization, integrated, report to the police reliable, as long as open the door or sense line opens circuit and all reports to the police, and, light points out simultaneously, the warning effective radius is 120 meters; 2, there is the monostable time delay circuit low, the power consumptive province of cost in the emitting module, after warning continues for some time, recovers the on the alert of power consumptive province again, changes one-shot battery in emitting module 6--8 month, and receiving unit 3--4 changed one-shot battery in individual month; 3, transmitter is reported to the police and is once only worked several seconds, does not disturb other wireless device; 4, emitting module all adopts non-contact work, can be installed in inflammable easily sudden and violent place.

Fig. 1 is the utility model emitting module block scheme;

Fig. 2 is the utility model emitting module circuit theory diagrams;

Fig. 3 is the utility model receiving unit block scheme;

Fig. 4 is the utility model receiving unit circuit theory diagrams.

The utility model is described in further detail below in conjunction with accompanying drawing.

As seen from Figure 1, Figure 2, the emitting module of this alarm is a termination power negative pole of Magnetic Sensor, and the other end divides two-way, and one the tunnel through resistance R ₁Connect positive source, the phase inverter F of delay circuit is sent out in another road contact ₁Input pin the 13rd pin, this circuit is that model is the integrated circuit (IC) of CD4069 ₁And the monostable circuit of peripheral cell composition, phase inverter F ₁, F ₂Polyphone is through diode D ₁Meet phase inverter F ₃Input end 1 pin and diode D ₂Negative pole, phase inverter F ₃Output terminal 2 pin insert capacitor C ₁Negative pole, capacitor C ₁Positive pole meet phase inverter F ₄Input end 3 pin and through resistance R ₂Connect the positive pole of power supply, phase inverter F ₄Output terminal 4 pin meet phase inverter F ₅Input end 9 pin and diode D ₂Positive pole, phase inverter F ₅, F ₆Series connection, for scrambler provides enough big working current, scrambler is that model is the integrated circuit of VD5026, F ₆Input end the 18th pin of output termination scrambler, negative supply the 9th pin of scrambler is through photoelectric diode D ₃Connect power cathode, D ₃For work indication and hypotensive effect is arranged, the 1--8 pin of scrambler is the password line, and output terminal the 17th pin of scrambler is through resistance R ₄Meet triode V ₁Base stage, triode V ₁, capacitor C ₂, C ₃, C ₄, C ₅And coil L ₁, L ₂Form the strength circuit, this circuit is line incessanly;

By Fig. 3, Fig. 4 as can be known, receiving unit is that antenna is through capacitor C ₁Meet triode V ₁Emitter-base bandgap grading, triode V ₁And peripheral original paper composition broadband High Amplifier Circuit, the current collection level of the triode V1 of this circuit is through capacitor C ₄Access is by triode V ₂, capacitor C ₅, C ₆, C ₇, resistance R ₅And coil L ₁, L ₂The resonant circuit of forming, this circuit coils L ₃, resistance R ₉And R ₁₀Insert the integrated circuit (IC) of amplification and rectification circuit _1-1The the 6th and the 5th pin of LM324, this integrated circuit the 7th pin output meets the integrated circuit (IC) I that model is LM324 _1-2Input pin the 3rd pin, it is the demoder IC of VD5027 that the output of its 1st pin inserts model ₂Input pin the 14th pin, pin 1--8 is the password line, its connection is corresponding with the password line of scrambler, output pin the 17th pin of demoder is through diode D ₂The monostable integrated circuit (IC) of delay circuit is sent out in contact ₃Input end the 13rd pin, the model of this monostable circuit is CD4069, its output terminal divides two-way, the one tunnel through resistance R ₁₉And model is the musical film IC of KD-9561 ₄Meet loudspeaker BL, another road is through starting to control the clamper diode D that makes usefulness ₄Meet phase inverter F ₅, F ₆The multivibrator of forming, phase inverter F ₆Output terminal connect photoelectric alarm device D ₅D ₅Negative pole connect the negative pole of power supply.

Magnetic Sensor CK is closed during the emitting module state of alert, phase inverter F ₁Input end is an electronegative potential because of linking to each other with power cathode, phase inverter F ₂Output terminal also be electronegative potential.When CK open circuit promptly opens the door, phase inverter F when window or sense line open circuit ₂The output high level triggers the monostable time delay circuit, phase inverter F ₆The output high level, positive voltage adds to the V of scrambler _DDEnd makes scrambler work, from 17 pin output encoder pulses, through resistance R ₄Enter triode V ₁Base stage be V simultaneously ₁Provide bias current, by triode V ₁, capacitor C ₂, C ₃, C ₄, and coil L ₂Form radio-frequency oscillator work, modulated signal is by C ₅Send to antenna.Return on the alert after 5 seconds.

When the antenna of receiving unit is received the password radio signal that emitting module sends here, triode V ₁Carry out radio frequency earlier and amplify, by capacitor C ₄Be coupled to triode V ₂, capacitor C ₅, C ₆, C ₇, resistance R ₅And coil L ₁, L ₂The resonant circuit of forming makes the resonance amplitude change with the variation of input signal modulation voltage, the low frequency pulse signal coils L that reconciles out ₃, resistance R ₉And R ₁₀Insert IC _1-1Amplify, output inserts ICI again _1-2Carry out the amplitude limit shaping, insert demoder IC after the shaping ₂, demoder is its 17 pin output high level of password pulse that corresponding emitting module is sent here through judgement, through diode D ₂Trigger the monostable time delay circuit, F ₄The output high level, it divides two-way, and one the tunnel through resistance R ₁₉To IC ₄5 pin, IC ₅Work drives loudspeaker BL sounding; Another road is through starting to control the clamper diode D that makes usefulness ₄Meet phase inverter F ₅, F ₆The multivibrator of forming, F ₄D during for high level ₄End phase inverter F ₅, F ₆The multivibrator work of forming, D ₅Flashing light alarm; Work as F ₄During for electronegative potential, F ₃3 pin by D ₄Clamper also is an electronegative potential, and above-mentioned multivibrator is not worked, then D ₅Do not glisten; Loudspeaker is not worked yet simultaneously.Receiving unit is whenever received signal work half a minute one time, stops automatically then, gets back on the alert.

Claims

1, a kind of wireless anti-theft alarming device, it comprises emitting module and receiving unit, it is characterized in that: its emitting module is to be connected and composed successively by sensor, triggering delay circuit, scrambler, strength circuit; Its receiving unit is to be connected and composed successively by High Amplifier Circuit, resonant circuit, amplification and rectification circuit, demoder, triggering delay circuit and sound light alarming circuit;