CN2257391Y - Bidirectional telecontrol theft-proof alarm - Google Patents

Abstract

The utility model relates to an alarm for theft (containing vehicles), which is provided with a host machine and a remote control BP machine, wherein, the host machine and the remote control BP machine are respectively provided with a transceiver circuit. The BP machine receives the alarm signals of the host machine and gives out alarm through a buzzer by an amplifying circuit, a demodulation circuit, a decoding circuit, a time delay circuit and a circuit for alarm clock travel time. A transmitter transmits remote switch signals passing through an encoding circuit, a modulation circuit and a radio-frequency output circuit to the host machine; after the host machine receives the remote switch signals of the BP machine, the remote switch signals pass through the demodulation circuit, a shaping amplification circuit, a decoding circuit and a control circuit and are sent to a horn for alarm; the transmitting circuit of the host machine can transmit the remote switch signals by a vibration impact sensor through pulse output, encoding, crystal vibration, modulation and power amplification to the BP machine. The host machine is arranged in required articles or places; the remote control BP machine can be carried about.

Description

The bidirectional remote control burglar alarm

The utility model relates to a kind of stealing (containing vehicle) alarm by mobile object and electro ultrafiltration.

The stealing alarm of vehicle and various occasions thereof has many application.A kind of wireless monitor paging of CN2166489Y patent disclosure burglar alarm, employing displacement transducer and direct current amplifier composition signal generation amplifying circuit are controlled the conducting of a controllable silicon SCR and are sent high frequency alerting signal (band coding), through the receiver module of receiver and the power supply of demoder driving electronic switch connection audio alarm.A kind of automobile motorcycle anti-theft equipment of CN2152720Y patent disclosure mainly comprises transmitter, receiver, power supply and warning horn, and when meeting robber's car or drive lock by force, warning horn sends loud noise, and outage immediately.A kind of sensing remote annunciator of CN2154508Y patent disclosure, mainly be made up of transmitter and receiver, the sensor sensing external information sends radio signal after transmitter is handled to receiver, promote music-integrating block after treatment, and send alerting signal by loudspeaker.A kind of motorcycle anti-theft warning of CN2161959Y patent disclosure machine has the A machine (being located on the motorcycle) of identification software, hardware, the highly sensitive sensing of contact percussion, self-protection, analysis identification warning function and the B machine (carrying band on the arm on the person) of remote (in the 100m) reception warning function is formed by a kind of.On the A machine, be provided with emitting antenna, power lead, standby direct supply (6V); On the B machine, be provided with soft antenna, toggle switch, variable condenser, loudspeaker, direct supply (9V), potentiometer, magnetic antenna, dial.Above-mentioned burglar alarm generally only has one-way function, and range of application is less.

The purpose of this utility model aims to provide a kind of beeper formula bidirectional remote control burglar alarm that utilizes vibratory impulse formula sensor.

The utility model is provided with main frame and remote control beeper (secondary machine) two parts.The remote control beeper has receiver and transmitter, receiver is provided with receiving antenna in order, antennafier, demodulator circuit, shaping amplification circuit, decoding circuit, delay circuit, circuit and hummer when alarm clock is walked, the high-frequency modulation signal that receiving antenna receives connects antennafier, the amplifying signal output termination demodulator circuit of antennafier, demodulator circuit demodulation output termination shaping amplification circuit, through shaping amplifying signal output termination decoding circuit, decoded signal output termination delay circuit, time-delay output control signal connects alarm clock circuit when walking, the output signal of circuit connect the hummer sounding when alarm clock was walked; Transmitter connects and is sequentially with teleswitch, coding circuit, modulation circuit, rf output circuit and emitting antenna, the control signal output ends of teleswitch connects coding circuit, coded signal output termination modulation circuit, modulation signal output termination rf output circuit, antenna is penetrated in the sending and receiving of radiofrequency signal output terminal.Main frame is made up of receiving circuit and radiating circuit, receiving circuit is provided with demodulator circuit, shaping amplification circuit, decoding circuit, control circuit and the loudspeaker of receiving antenna, remote control beeper control signal in order, receiving antenna connects demodulator circuit, restituted signal output termination decoding circuit, decoded signal output terminal connection control circuit, the audible warning control output end of control circuit connects loudspeaker; Radiating circuit is provided with vibration impact transducer, impulse output circuit, coding circuit, crystal oscillator and modulation circuit, power amplification circuit and emitting antenna in order, the output terminal of vibration impact transducer is connected with the control circuit of receiving circuit, the pulse output end of control circuit connects impulse output circuit, the output terminal one tunnel of impulse output circuit connects crystal oscillating circuit, connect modulation circuit behind the encoded circuit in another road, modulation signal output termination power amplification circuit, antenna is penetrated in the sending and receiving of power amplification output terminal.

If be applied to vehicle (containing motorcycle), can be at the flame-out control circuit of decoding circuit output termination vehicle of the receiving circuit of main frame.The demodulator circuit of the receiver of remote control beeper and the receiving circuit of main frame can adopt the superregeneration demodulator circuit.Remote control beeper and main frame can adopt a secondary reception, emission common antenna respectively, generally need add the antenna isolation circuit.

The utility model utilizes vibration impact transducer, and its sensitivity is higher, and range of application is wider.Utilize the two-way beeper formula of remote control, its anti-theft feature is provided, the remote control beeper is carried, and main frame is ensconced on the article, chooses at random control modes such as loudspeaker is reported to the police, vehicle ignition is flame-out according to different situations.The volume of device is little, is convenient to bury and puts and carry.Be particularly useful for important item and other places such as vehicle, cabinet.

Fig. 1 is a remote control beeper acceptor circuit functional-block diagram of the present utility model.

Fig. 2 is a remote control beeper transmitter circuit functional-block diagram of the present utility model.

Fig. 3 is a host circuit functional-block diagram of the present utility model.

Fig. 4 is remote control beeper circuit theory diagrams of the present utility model.

Fig. 5 is a host circuit schematic diagram of the present utility model.

Embodiment: shown in Fig. 1～3, the utility model comprises that remote control beeper and master look two parts, and remote control beeper and main frame respectively are provided with receiving circuit and radiating circuit.Remote control is that the receiver of machine is established receiving antenna, received signal is delivered to demodulator circuit (2) through antennafier (1), the detection output signal is sent decoding circuit (4) behind shaping amplification circuit (3), decoded signal is by delay circuit (5), circuit (6) when delay control signal control alarm clock is walked, and send the sound by electromagnetism piezo (7); Transmitter is established teleswitch (8), and remote signal is sent coding circuit (9), and coded signal sends remote information through modulation circuit (10) and rf output circuit (11) by emitting antenna.The receiving circuit of main frame is established receiving antenna, and the remote control beeper control rf modulated signal that receives is through demodulator circuit (13).Send shaping amplification circuit (14) shaping to amplify after the demodulation, and by decoding circuit (15) decoding, decoded signal send control circuit (16), comprises controls such as sensor output signal, radiating circuit duty, loudspeaker (17) are sent in one tunnel output of control circuit; The main frame radiating circuit is established vibration transducer (18), the output terminal of vibration impact transducer is connected with the control circuit of receiving circuit (16), the pulse output signals of control circuit (16) is connected with coding circuit (21) with crystal oscillating circuit (20) respectively through pulse output circuit (19), coded signal output connects antenna isolation device (24) with the oscillator signal output of crystal oscillating circuit behind modulation circuit (22) and power amplification circuit (23), and sends signal by antenna.

Below in conjunction with 4, Fig. 5 describes each circuit of the present utility model in detail and constitutes.

Fig. 4 provides remote control beeper circuit theory diagrams, and the remote control beeper comprises receiving circuit and radiating circuit.Receiving circuit is by receiving antenna, antennafier, demodulator circuit, shaping amplification circuit, decoding circuit, delay circuit, circuit and electromagnetism piezo were formed when alarm clock was walked.Tours antenna receives antennas amplifier input terminal behind the signal of main frame, and antennafier is by field effect transistor BG ₁, output loop and auxiliary Resistor-Capacitor Unit form, and passes through capacitor C through antennafier high frequency amplified output signal ₁Be coupled to superregeneration demodulator circuit triode BG ₂Collection base loop, adopt two switching diodes (IN4148) series connection in the circuit, make voltage be stabilized in 1.1～1.2V, to guarantee complete machine at 1.2～1.8V steady operation, the superregenerative detection output signal is by BG ₂Emitter-base bandgap grading output.Shaping amplification circuit is by R ₁C ₂Rc low pass filter and IC ₁Compositions such as (IM393 window circuits), the detection output of demodulator circuit meets R ₁C ₂The input end of rc low pass filter, the output termination IC of low-pass filter ₁Input end (the 5th pin), the output of shaping amplification circuit is by IC ₁The 7th pin be connected to decoding circuit IC ₂Input end.Decoded signal is by IC ₂The 17th pin output, and be connected to by switching diode D ₁And R ₂The delay circuit that (1M Ω) forms, this noble potential trigger pip are connected to after time-delay by " BP " (T804) and BG ₃The circuit when alarm clock of forming is walked controlling its vibration, and sends the sound by the electromagnetism piezo.

The radiating circuit of remote control beeper comprises 4 road teleswitch (K ₁, K ₂), coding circuit IC ₃, keying modulation and rf output circuit be (by BG ₄Form with R, C, L auxiliary element) and emitting antenna.The K of 4 road teleswitches ₁Meet IC ₃The 18th pin, K ₂Meet IC ₃The 10th～12 pin data terminal, to produce different functions.By IC ₃The data-signal of the 17th pin output meets R ₃, deliver to the input end of keying modulation and rf output circuit again, last output is by BG ₄Collector be connected to emitting antenna.

Fig. 5 provides the host circuit schematic diagram, and main frame also is provided with receiving circuit and radiating circuit.Receiving circuit comprises receiving antenna, demodulator circuit (BG ₁And auxiliary element), shaping amplification circuit (IC ₁Deng), decoding circuit (IC ₂Deng), control circuit (IC ₃With two input nand gates) and loudspeaker, the remote control BP signal that is received by antenna is connected to the input end of superregeneration demodulator circuit, through BG ₁After the superregeneration demodulator circuit demodulation of forming with auxiliary element by BG ₁Emitter-base bandgap grading output, be connected to by IC ₁On LM93 the 5th pin of the shaping amplification circuit of forming, after amplifying, export and be connected to by IC by the 7th pin ₂(VD5027) etc. the decoding circuit of composition is decoded, according to different numbers at IC ₂The 10th～12 pin produce different noble potentials, the 17th pin is also exported noble potential (output electronegative potential when signal stops) simultaneously.

Behind the blackout that receives, the output of the difference of the 10th～12 pin will remain unchanged, until receiving that once more different therewith digital signals just disappears.IC ₂The signal of the 10th～12 pin output is delivered to by IC ₃(CD4011) and the control circuit formed of two input nand gates, so that the radiating circuit of vibration transducer, loudspeaker and main frame is carried out various controls.Receive the control signal of remote control beeper emission when decoding circuit after, IC ₂The 12nd pin become noble potential, by diode D ₂Enter the B end, the one tunnel makes the BG of the flame-out control circuit of vehicle ₃Produce saturation conduction, make engine kill; Another road provides working power for vibration impact transducer.When main frame was subjected to vibrating, vibration impact transducer moment became open circuit by short circuit, produced a pulse output, made IC ₃The 3rd pin become electronegative potential, through D ₇Triggering is by BG ₂Deng the monostable circuit of forming, control IC ₃The oscillatory circuit of 1: 1 pulsewidth forming of the 8th～13 pin, modulation circuit and crystal oscillating circuit are delivered in its output, make the main frame radiating circuit produce the output that is interrupted.Can make the receiving circuit of main frame utilize the interruption of radiating circuit not disturb moment to receive instruction control signal at any time like this, for example loudspeaker alarm command or stop paying out instruction or engine kill instruction etc. from the remote control beeper.When receiver is received the loudspeaker alarm command, IC ₂The 10th pin becomes noble potential, and the 13rd pin becomes electronegative potential, the 10th pin and IC ₃The 6th pin be connected IC ₂The signal of the 17th pin is connected to IC ₃The 5th pin, IC at this moment ₃The 4th pin become electronegative potential, loudspeaker promptly sends warning, IC ₃The electronegative potential of the 4th pin passes through D ₅Vibration impact transducer M is quit work.D ₈, D ₉Be transmittin-receiving tube, its effect is when being in accepting state, makes the radiating circuit output network not influence received signal, and when being in emission state, strong HF voltage can make D ₈, D ₉Conducting is also launched by antenna, plays the antenna isolation effect, so that shared common antenna.

In the main frame radiating circuit, by IC ₃Meet impulse output circuit BG Deng the control circuit of forming ₂, a road of impulse output circuit meets crystal oscillating circuit BG ₉Base stage, another road meets coding circuit IC ₄, coding circuit IC ₄Output termination modulation electric BG _4.5, crystal oscillating circuit BG ₉Collector oscillator signal output terminal and the output of modulation circuit through power amplification circuit BG _6.7,8Connect after the amplification by transmittin-receiving tube D ₈, D ₉The antenna isolation device of forming is emitted by antenna at last.

Claims (2)

1. a bidirectional remote control burglar alarm is provided with main frame and secondary machine, and main frame has radiating circuit, and secondary facility have receiver, it is characterized in that

(1). secondary machine is the remote control beeper, receiver is provided with receiving antenna in order, antennafier, demodulator circuit, shaping amplification circuit, decoding circuit, delay circuit, circuit and hummer when alarm clock is walked, the high-frequency modulation signal that receiving antenna receives connects antennafier, the amplifying signal output termination demodulator circuit of antennafier, demodulator circuit restituted signal output termination shaping amplification circuit, through shaping amplifying signal output termination decoding circuit, decoded signal output termination delay circuit, time-delay output control signal connects alarm clock circuit when walking, the output signal of circuit connect hummer when alarm clock was walked; Other has transmitter, transmitter is provided with teleswitch, coding circuit, modulation circuit, rf output circuit and emitting antenna in order, the control signal output ends of teleswitch connects coding circuit, coding circuit output termination modulation circuit, modulation signal output termination rf output circuit, antenna is penetrated in the sending and receiving of radiofrequency signal output terminal;

(2). main frame has receiving circuit, receiving circuit is provided with demodulator circuit, shaping amplification circuit, decoding circuit, control circuit and the loudspeaker of receiving antenna, remote control beeper control signal in order, receiving antenna connects demodulator circuit, restituted signal output termination decoding circuit, decoded signal output terminal connection control circuit, the audible warning control output end of control circuit connects loudspeaker; The radiating circuit of main frame is provided with vibration impact transducer, impulse output circuit, coding circuit, crystal oscillator and modulation circuit, power amplification circuit and emitting antenna in order, the output terminal of vibration impact transducer is connected with the control circuit of receiving circuit, the pulse output end of control circuit connects impulse output circuit, the output terminal one tunnel of impulse output circuit connects crystal oscillating circuit, connect modulation circuit behind the encoded circuit in another road, modulation signal output termination power amplification circuit, antenna is penetrated in the sending and receiving of power amplification output terminal.

2. bidirectional remote control burglar alarm as claimed in claim 1 is characterized in that the flame-out control circuit of decoding circuit output termination vehicle at the main frame receiving circuit.

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