CN2219514Y - Composite alarm - Google Patents

Abstract

The utility model relates to a composite alarm, particularly an alarming and anti-theft device for effectively avoiding the conditions that when an adult goes shopping with a child, the child is lost; when the adult goes outside with bags and luggage, the bags and the luggage are forgotten or stolen. The composite alarm is composed of an auxiliary machine (a transmitter) and a main machine (a receiver), wherein, the transmitter is provided with a casing provided with a work indicating light and a power supply switch; a transmitter electronic circuit board and an electronic component are arranged in the casing; a circuit is composed of an encoding part and a super ionization frequency transmitting part; the receiver is provided with a casing provided with sound holes; the power supply switch is provided with the electronic circuit board; an electronic line is composed of an oscillating circuit, a demodulation circuit, a shaping amplification circuit, a decoding circuit, an audio frequency oscillating circuit and a voltage stabilizing circuit.

Description

Composite alarm

What the utility model composite alarm related to is a kind of warning, anti-theft arrangement, can prevent from effectively that the adult from carrying small children to go into the street not wander away, do not pass into silence when case and bag luggage is gone out or stolen.

At present anti-lose or burglar alarm has plenty of with plug cord and connects, report to the police after drawing back plug, use inconvenience, controlled in wireless is also arranged, but the harmonic wave that transmitter sends too much, the frequency spectrum accepted of receiver is wide, like this as two pairs or more emission, receiver during in same occasion, as long as a transmitter is arranged in work, all receivers will not reported to the police, and cause that child wanders away, case and bag lose key and lose the danger of vigilance.

The purpose of this utility model is the weak point that exists at above-mentioned anti-loss, thief-proof warning device, a kind of composite alarm is provided, adopt coded system to come modulation transmitter (handset), receiver (machine tool) is decoded after receiving the handset signal identical with its frequency of operation, if composite aircraft coding is identical, the locked not sounding of machine tool then, otherwise machine tool is reported to the police, have only the composite aircraft ability cross complaint of pairing, can not cause the mistake control.

Composite alarm takes following scheme to realize, mainly (transmitter, machine tool (receiver) constitute composite alarm by handset.Handset (transmitter) has shell, and pilot lamp, power switch are housed on the shell, and transmitter electronic circuit board and electronic devices and components are housed in the shell, and the transmitter electronic circuit is made up of coding and ultrahigh frequency emission two parts circuit.Coding circuit is made up of digital coding ic chip 1, resistance R 1-R3, capacitor C 1, diode D1, with ten one-over-one-address code ic chips 1 is the center, and wherein R1 is an oscillation resistance, and C1 is a filter capacitor, each address wire of integrated package A1-A11 is carried out the wiring processing, can constitute different codings.The ultrahigh frequency radiating portion is by triode BG1, capacitor C 2-C4, and built-in antenna L1 constitutes.C is an oscillatory feedback electric capacity, and after the coded signal modulation that R3 sends here, process built-in antenna L1 is spatial emission coding am radio ripple towards periphery by IC1 for this vibration electric wave.Machine tool (receiver) has shell, has vocal hole on the shell, and power switch is housed, and relay indicating light is equipped with receiver electronic circuit board and electronic devices and components in the shell.Accepting electronic circuit is made up of oscillatory circuit, demodulator circuit, shaping amplification circuit, decoding circuit, audio oscillator circuit, mu balanced circuit.Oscillatory circuit is by triode BG1, capacitor C 1-C7, resistance R 1-R3, and built-in antenna L1 forms.Demodulator circuit is by triode BG2, resistance R 7, R8, and capacitor C 8, C9, C10 form.Shaping amplification circuit is made up of amplifier ic chip 1, resistance R 9, capacitor C 11, C12, C13.Decoding circuit is made up of ic chip 2, resistance R 10-R15, light emitting diode D2, diode D4, triode BG3.Audio oscillator circuit is made of triode BG4, oscillation transformer B1, piezoelectric patches HTD, resistance R 16, capacitor C 14.Mu balanced circuit is made up of triode BG5, stabilivolt D3, resistance R 17, power switch K.

The built-in antenna L1 of machine tool (receiver) forms the oscillatory circuit identical with transmitter frequency with LC loop and triode BG1 that capacitor C 1-C3 forms, by amplifying shaping by IC1 after the BG2 demodulation, deliver to 14 pin of decoding circuit IC2, the A0 of IC2-A7 address wire by wiring handle (promptly connect+, connect-, do not connect, connect 1 pin), also can constitute different codings, when this coding is identical with transmitter coding, (17) pin of IC2 is a high level, this high level makes the BG3 saturation conduction, the c utmost point of BG3 ↑, the b utmost point of BG4 ↓, and BG4 is ended, receiver is noiseless.If the handset signal frequency coding that antenna loop can not receive handset signal or acceptance and machine tool are not simultaneously, (17) pin of IC2 is a low level, the c utmost point of BG3 ↑ and, the work of BG4 audio oscillator circuit makes piezoelectric patches HTD send chimes of doom.

Composite alarm is owing to adopt coded system to come modulation transmitter (handset), receiver (machine tool) is decoded after receiving the handset signal of its frequency of operation, if the composite aircraft coding is identical, the locked not sounding of machine tool then, otherwise machine tool is reported to the police, and major advantage is to have only the composite aircraft ability cross complaint of pairing, can not cause the mistake control, its the coding totally 32 ten thousand groups do not repeat mutually, do not disturb mutually.When the adult carries small children when going into the street, child may wander away, when going out, band case and bag luggage also may forget or stolen, if it is a pair of to have composite alarm, carry or put into case and bag after the handset energized by child, constantly outwards launch specific radiowave, machine tool is placed at one's side the pocket by owner, sounding not when machine tool is received the electric wave of handset emission, for the moment handset is left about machine tool 15m or handset is turned off power supply, machine tool sends chimes of doom and reminds the carrier to note, thereby avoids child to wander away, the danger that case and bag are lost.

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

Fig. 1 is composite alarm handset (transmitter) synoptic diagram.

Fig. 2 is composite alarm machine tool (receiver) synoptic diagram.

Fig. 3 is composite alarm handset (transmitter) electronic circuit schematic diagram.

Fig. 4 is composite alarm machine tool (receiver) electronic circuit schematic diagram.

Constitute by handset (transmitter), machine tool (receiver) with reference to accompanying drawing 1,2,3 composite alarms.Handset (transmitter) has shell (1), on the shell surface newspaper transmitter relay indicating light (2) is housed, and power switch (3) is equipped with transmitter electronic circuit board and electronic devices and components in the shell.The transmitter electronic circuit is made up of coding circuit, ultrahigh frequency radiating circuit.Coding circuit is the center with ic chip 10 one-over-one-address code four figures according to the coding integrated package, and C1 links with filter capacitor, and is connected to oscillation resistance R1, each address wire of integrated package A1-A11 carry out wiring handle (promptly connect+, connect-, do not connect, connect (1) pin) can constitute different codings.9 pin are the location, 18 pin be power supply+, 14 pin ground connection allow for output, 17 pin DC are coded signal output, this signal is delivered to radiating portion through R3.The ultrahigh frequency radiating portion is made up of triode BG1, capacitor C 2-C4, built-in antenna L1.Capacitor C 2 is an oscillatory feedback electric capacity.After the coded signal modulation that R3 sends here, process built-in antenna L1 is spatial emission coding am radio ripple towards periphery by IC1 for this vibration electric wave.

With reference to accompanying drawing 2,4, machine tool (receiver) has and is processed with vocal hole (6) on receiver shell (5), the shell, and power supply is housed closes and open (4), relay indicating light (7), and the receiver electronic circuit board is housed in the shell, and electronic devices and components.The receiver electronic circuit is made up of oscillatory circuit, demodulator circuit, shaping amplification circuit, decoding circuit, audio oscillator circuit, mu balanced circuit.Oscillatory circuit is made up of triode BG1, capacitor C 1-C7, resistance R 1-R3, built-in antenna L1.BG1 and C1, C2, C3, C4, C5 form oscillation circuit, wherein C1, C2, C3, L1 form the LC loop, resonance frequency is identical with transmitter, C1 is the trimmer usefulness of adjusting frequency, C4, C5 are feedback capacity, the vibration of BG1 can stably be operated on the frequency of 265MHZ the LC loop, and the signal that this loop receives is delivered to triode BG2 by C8, R6.Demodulator circuit is made up of triode BG2, resistance R 7, R8, capacitor C 8-C10.The b utmost point of triode BG2 links to each other with resistance R 6, R7, C9, C9 other end ground connection, and the c utmost point and R7, the R8 of BG2 link, and another termination power of R8 is associated with capacitor C 10 between the c utmost point of BG2 and the e utmost point.R8 is the pull-up resistor of BG2, and R7 is the b utmost point biasing resistor of BG2, and C9 is a shunt capacitance, and the c utmost point output restituted signal of BG2 send shaping amplification circuit amplifier ic chip 1.Shaping amplification circuit is made up of amplifier ic chip 1, resistance R 9, capacitor C 11, C12, C13.The 4 pin ground connection of IC1,8 pin connect+power supply, and 6 pin connect capacitor C 11 filtering, are connected with R9 between 5 pin and 6 pin, and 5 pin are input end, and 7 pin connect 14 pin of decoding circuit IC2, and the signal after the amplification shaping is exported through 7 pin, delivers to decoding circuit IC2.Decoding circuit mainly is made up of ic chip 2, resistance R 10-R15, light emitting diode D2, diode D4, triode BG3.9 pin ground connection of decoding circuit ic chip 2,18 pin connect+power supply, 2 pin-8 pin is an address wire, and when the address wire mode of connection and transmitter formation same-code, 17 pin of IC2 are just exported high level, 17 pin link to each other with triode BG3 by R10,15,16 pin meet oscillation resistance R11, make the identical of frequency and transmitter, so that decoding, 10 pin are also exported high level after obtaining decoded signal makes pilot lamp luminous, and 10 pin join by R14 and light emitting diode D2.BG3 is a reverser, and its base stage is when receiving the 7 pin high level of IC2, and current collection is low level very, grounded emitter.The low level of collector is ended BG4.Audio oscillator circuit is made of triode BG4 oscillation transformer B1, piezoelectric patches HTD, resistance R 16, capacitor C 14.The e utmost point ground connection c utmost point of BG4 meets oscillation transformer B1, and the b utmost point meets feedback resistance R16, and another termination of R16 becomes at device B1, and piezoelectric patches HTD links to each other with oscillation transformer B1, and oscillator signal sends through piezoelectric patches HTD.Mu balanced circuit is made of triode BG5, stabilivolt D3, resistance R 17, power switch K.The base stage of triode BG5 and stabilivolt D3 join, and D3 voltage stabilizing diode voltage stabilizing value is 6V, makes the base stage of BG5 be limited in 6V, and emitter is sent by the 6V power supply of voltage stabilizing to prime.

Claims (6)

1, a kind of composite alarm, constitute by transmitter, receiver, transmitter has shell, be equipped with on the shell transmitter electronic circuit board and electronic devices and components are housed in relay indicating light, power switch, the shell, the transmitter electronic circuit has by digital coding ic chip 1, resistance R 1-R3, capacitor C 1, diode D1 form coding circuit, with by triode BG1, capacitor C 2-C4, the ultrahigh frequency radiating portion that built-in antenna L1 forms; Receiver has shell, has vocal hole on the shell, power switch is housed, receiver electronic circuit and electronic devices and components is housed in the relay indicating light, shell, it is characterized in that the receiver electronic circuit is made up of oscillatory circuit, demodulator circuit, shaping amplification circuit, decoding circuit, audio oscillator circuit, mu balanced circuit; Oscillatory circuit is by triode BG1, capacitor C 1-C7, resistance R 1-R3, built-in antenna 1 is formed, and demodulator circuit is by triode BG2, resistance R 7, R8, capacitor C 8, C9, C10 form, decoding circuit is by ic chip 2, resistance R 10-R15, light emitting diode D2, diode D4, triode BG3 forms, and audio oscillator circuit is by triode BG4, and oscillation transformer B1, piezoelectric patches HTD, resistance R 16, capacitor C 14 constitute.

2, composite alarm according to claim 1 is characterized in that forming oscillation circuit by triode BG1 and C1, C2, C3, C4, C5 in the receiver oscillatory circuit.

3, composite alarm according to claim 1, the b utmost point that it is characterized in that triode BG2 in the receiver demodulator circuit links to each other with resistance R 6, R7, C9, C9 other end ground connection, and the C utmost point and R7, the R8 of BG2 link, another termination power of R8 is associated with capacitor C 10 between the c utmost point of BG2 and the e utmost point.

4, composite alarm according to claim 1, it is characterized in that 4 pin ground connection, 8 pin of amplifier ic chip 1 connect in the receiver shaping amplification circuit+power supply, 6 pin connect be connected with R9 between capacitor C 11,5 pin and 6 pin, 5 pin are 14 pin that input end, 7 pin meet decoding circuit IC2.

5, composite alarm according to claim 1, it is characterized in that 9 pin ground connection, 18 pin of decoding circuit ic chip 2 connect in the receiver decoding circuit+power supply, 2 pin～8 pin are address wire, 17 pin link to each other with triode BG3 by R10, and 15,16 pin meet oscillation resistance R11,10 pin join by R14 and light emitting diode D2.

6, composite alarm according to claim 1, e utmost point ground connection, the C utmost point that it is characterized in that triode BG4 in the receiver audio oscillator circuit meets oscillation transformer B1, the b utmost point meets feedback resistance R16, another termination transformer of R16 B1, piezoelectric patches HTD links to each other for depressor B1 with vibration.

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