CN2156544Y

CN2156544Y - Remiding device for losing-proof

Info

Publication number: CN2156544Y
Application number: CN 93236211
Authority: CN
Inventors: 徐延陆
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-02-10
Filing date: 1993-02-10
Publication date: 1994-02-16
Anticipated expiration: 2003-02-10

Abstract

The utility model relates to a reminding utensil which is designed for preventing portable and important special components from losing, mainly composed of a signal transmitter, and a receiver. The receiver has an outer case, a multi-position switch antenna, a buzzer, and an electronic line board. A transmitter electronic line is composed of a coding decoding integrated block, a multi-position switch, an electrical inductance, a transistor, a resistor and a capacitance. A receiver electronic circuit is composed of a frequency-selective network circuit, a high-frequency signal amplifying circuit, a superregeneration demodulation circuit, a pulse shaping and decoding circuit, and an audio frequency triggering circuit. When the reminding device for the losing-proof is applied and portable children or valuables, important workpiece, etc., leave the distance range with 3-5 meters from bodies, the reminding device alarms and reminds signals.

Description

Remiding device for losing-proof

The utility model relates to a kind of forget for the important objects that prevents to carry lose the prompting utensil that designs.

In actual life, usually there is the people on a business trip or when travelling outside, because of carelessness for the moment will the important objects such as briefcase be forgotten in automobile, the first-class public place of sales counter is lost.Along with the rhythm of the modern life is accelerated, this type of phenomenon is more apparent to be increased.

The purpose of this utility model is that to adopt ultrahigh frequency transceiving and pulse to compile technology such as the sign indicating number that is situated between be to prevent that the forgeing of carrying of important objects from losing the anti-loss reminiscences that designs.

The anti-reminiscences of losing takes following scheme to realize: the anti-reminiscences of losing is made up of signal transmitter and receiver two parts, uses in pairs.Signal transmitter has transmitter electronic circuit board, electronic devices and components is housed in shell, Multi-position switch, emitting antenna, the shell.Electronic circuit is by integrated circuit (IC) 1, Multi-position switch K1-1～K1-4, inductance C1, and resistance R 1, R2, capacitor C 1～C4 transistor T forms.Integrated circuit (IC) 1 can adopt encoding and decoding integrated package model UM3750 or MC145026P.The two condition Multi-position switch that the built-in pulse code setting of transmitter is 12 provides 4096 kinds of codings to select.Pulse code is that the carrier signal of 250MHZ is carried out modulate emission with mode of frequency regulation to frequency, and modulation signal is outwards launched by antenna.Receiver has in receiver shell, Multi-position switch, hummer, receiving antenna, the receiver shell receiver electronic circuit board, electronic devices and components is housed.Electronic circuit mainly is made up of with Jie's sign indicating number and audio frequency trigger circuit frequency selection network, high-frequency signal amplification, superregeneration demodulation, shaping pulse.Frequency selection network is by telefault L2, and capacitor C 5 constitutes, and the high-frequency signal amplifying circuit mainly is made up of integrated circuit (IC) 5, can adopt μ PC1651 ultrahigh frequency amplifying circuit.The superregeneration demodulator circuit is made of capacitor C 9, inductance L 3, transistor T 2, inductance L 5, capacitor C 11, resistance R 5, and T2 can adopt high-frequency small power transistor.Shaping pulse and decoding circuit are by capacitor C 12, C13, resistance R 7, integrated circuit (IC) 2, decoding integrated circuit IC4, and Multi-position switch K2-1～K2-12 constitutes.Decoding integrated circuit IC4 can adopt Um3750 or MC145027P.The audio frequency trigger circuit are made up of ic chip 3, resistance R 13, R14, capacitor C 15, C16.IC3 can adopt clock circuit, the NE555 circuit.

Anti-reminiscences apply pulse coded modulation and stable, the reliable secret strong anti-interference performance of decoding technique employing ultrahigh frequency transceiving circuit lost.When the children that carry or valuables, confidential object etc. left at one's side 3-5 rice distance range, reminiscences promptly sent the alarm signal, thereby vigilance is in addition taken precautions against.The reminiscences transmitter places on the shielded object, and receiver then carried as side-arm is put into pocket, and the user can be provided with password voluntarily, makes the code switch on the transmitter and receiver corresponding one by one.Receiver is effectively guarded against in the radius at 3-5 rice, can stablize the specific coding signal that receiver/transmitter sends, and this moment, voicefrequency circuit was not triggered.If exceed this range of receiving or what receive is not the coded signal of setting in advance, then trigger voicefrequency circuit, hummer sends " tick, tick, tick " alarm signal, thereby reaches the purpose that in good time protection object does not pass into silence and loses.

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

Fig. 1 is the utility model transmitter synoptic diagram.

Fig. 2 is the utility model receiver synoptic diagram.

Fig. 3 is the utility model transmitter electronic schematic.

Fig. 4 is the utility model receiver electronic schematic.

Form by signal transmitter, receiver two parts with reference to the anti-reminiscences of losing of accompanying drawing.Signal transmitter has in transmitter house (1), transmitter Multi-position switch (2), emitting antenna, the machine transmitter electronic circuit board, electronic devices and components is housed.Electronic circuit adopts pulse code special IC IC1, its the 1st～12 pin connects 12 figure place bit switch K1-1～K1-12 respectively, 12 whole short circuits of throwing point of switch other end ground, resistance in series R1 between the 17th pin allomeric pipe T1 base stage, the T1 emitter is with collector shunt capacitance C4, emitter is with resistance in series R2 between the ground, among capacitor C 1 is connected in parallel on T1 base stage and L1 and C3 connects between point, emitting antenna is drawn from the T1 collector, and the coded pulse that IC1 produces is carried out the frequency modulation modulate emission to the 250MHZ carrier signal.Capacitor C 1～C4 and transistor T1 form the capacitance three-point type vibration in the transmitter electronic circuit.

Have receiver shell (3) with reference to the accompanying drawing receiver, be equipped with in Multi-position switch (4), hummer (5), the receiver receiver electronic circuit board wiring board is housed, on electronic devices and components are housed.Inductance L 2 is formed frequency selection network with capacitor C 5 in parallel being serially connected between receiving antenna and the ground in the receiver circuit.IC5 is a ultrahigh frequency small-signal amplification circuit, its signal input part first pin is with capacitor C 6 series connection, continuous antenna of the C6 other end and L2, point among the C5 series connection, C7 then is connected on IC5 and goes out between end the 2nd pin and transistor T 2 collectors, resistance R 5 is serially connected in T2 emitter and the ground loop with inductance L 5 with capacitor C 11 backs in parallel, from producing quenching N vibration, capacitor C 10 is with the parallel connection of T2 emitter and collector, adjustable resistance C9 and inductance L 3 back in parallel and inductance L 4, resistance R 6 is connected between power supply+V and the T2 collector, resistance R 4 is serially connected in T2 base stage and the ground loop after with capacitor C 8 parallel connections, resistance R 3 one ends connect the T2 base stage, and the other end then inserts L4 and C9, point among L3 connects.The coded pulse modulation signal that has amplified through IC5 is able to demodulation just in foregoing circuit.IC4 is the hex inverter integrated circuit, resistance R 8, R10, R12 respectively with first phase inverter 1,2 pin, second phase inverter 3,4 pin, the 3rd phase inverter 5,6 pin parallel connections, resistance R 9, R11 is then respectively with 2,3 pin, 4, the series connection of 5 pin, forming tertiary vein amplifies towards signal, the 4th phase inverter and the 5th phase inverter series connection entry loop, promptly the 6th pin and the 9th pin link, the 8th pin and the 11st pin composition pulse shaping circuit that links, and IC2 is the pulse decoding special IC, its the 1st～12 pin links with 12 figure place bit switch K2-1～K2-12 respectively, the then whole ground connection of 12 throwing points of the switch other end.The 16th pin is the 10th pin connection of pulse signal input terminal with IC4, the decoding comparison result is then exported by the 17th pin, IC3 is that integrated circuit of clock and peripheral circuit are formed the audio frequency trigger circuit, capacitor C 16 is connected between the 1st, 5 pin, and the 2nd, 6 pin short circuits insert C15 between 1,2 pin, R13 connects the 7th, the 8th pin, 7th, meet R14 between the 6th pin, to be trigger end link with the 17th pin of IC2 the 4th pin, and high electricity triggers frequently.Hummer D, one termination IC3 the 3rd pin, the other end then connects together, the coding that IC2 presets setting with the coded pulse of its 16th pin input with short K switch 2-1～K2-12 in its inner warp that produces the i.e. decoding of comparing, if accurate, the 17th pin output low level then, voicefrequency circuit is not triggered, otherwise the high electricity of the 17th pin output frequently, triggers voicefrequency circuit, and hummer D sends " tick, tick, tick " chimes of doom.

Claims

1, a kind of loss reminiscences is made up of signal transmitter and receiver two parts, transmitter has transmitter house, Multi-position switch, emitting antenna, transmitter electronic circuit board and electronic circuit, receiver has receiver shell, Multi-position switch, hummer, receiving antenna, receiver electronic circuit board and electronic circuit, it is characterized in that the transmitter electronic circuit is by the encoding and decoding ic chip ₁, Multi-position switch K _1-1～K _1-12, inductance L ₁, resistance R ₁, R ₂, capacitor C ₁～C ₄, transistor T is formed; The receiver electronic circuit mainly is made up of with decoding and audio frequency trigger circuit frequency selection network, high-frequency signal amplification, superregeneration demodulation, shaping pulse, and frequency selection network is by telefault L ₂, capacitor C ₅Constitute high-frequency signal amplifying circuit IC ₅Constitute, the superregeneration demodulator circuit is by capacitor C ₉, inductance L ₃, transistor T ₂, inductance L ₅, capacitor C ₁₁, resistance R ₅Constitute, shaping pulse and decoding circuit are by capacitor C ₁₂, C ₁₂, resistance R ₇, integrated circuit (IC) ₂, decoding integrated circuit IC ₄, Multi-position switch K _2-1～K _2-12Constitute, the audio frequency trigger circuit are by ic chip ₃, resistance R _13-14, capacitor C _15-16Form;

Adopt pulse code special IC IC in the transmitter electronic circuit ₁, its 1st～12 pin connects 12 figure place K switch respectively _1-1～K _1-12, 12 whole short circuits of throwing point of switch other end ground, the 17th pin allomeric pipe T ₁Resistance in series R between base stage ₁, T ₁Emitter is with integrated utmost point shunt capacitance C ₄, emitter is with resistance in series R between ground ₂, capacitor C ₁Be connected in parallel on T ₁Base stage and L ₁With C ₃Between point, emitting antenna is from T among the connection ₁Collector is drawn;

Meet IC in the motor electronic circuit ₅Be ultrahigh frequency small-signal amplification circuit, the same capacitor C of its signal input part first pin ₆Series connection, C ₆The other end links antenna and L ₂, C ₅The series connection mid point, capacitor C ₇Then be connected on IC ₅Go out end the 2nd pin and transistor T ₂Between the collector, resistance R ₅With capacitor C ₁₁The same inductance L in back in parallel ₅Be serially connected in T ₂In emitter and the ground loop, capacitor C ₁₀Same T ₂The emitter and collector parallel connection, adjustable resistance C9 is connected between power supply+V and the T2 collector with inductance L 3 backs in parallel and inductance L 4, resistance R 6, resistance R 4 is serially connected in T2 base stage and the ground loop after with capacitor C 8 parallel connections, and resistance R 3 one ends connect the T2 base stage other end and then insert L4 and be connected mid point with C9, L3; IC4 is the hex inverter integrated circuit, resistance R 8, R10, R12 respectively with first phase inverter, 1,2 pin, second phase inverter, 3,4 pin, 5, the 6 pin parallel connections of the 3rd phase inverter, resistance R 9, R11 then are composed in series tertiary vein and amplify towards signal with 2,3 pin, 4,5 pin respectively, and the 4th phase inverter and the 5th phase inverter series connection entry loop are formed pulse shaping circuit; IC is the pulse decoding special IC, and its 1-12 pin is respectively with 12 figure place bit switch K _2-1～K _2-12Link, the then whole ground connection of 12 throwing points of the switch other end, the 16th pin is the 10th pin connection of pulse signal input terminal with IC4, the decoding comparison result is then exported by the 17th pin; IC3 is that integrated circuit of clock and peripheral circuit are formed the audio frequency trigger circuit, capacitor C 16 is connected between the 1st, 5 pin, 2nd, 6 pin short circuits, 1, inserts capacitor C 15 between 2 pin, resistance R 13 connects the 7th, the 8th pin, meets R14 between the 7th, the 6th pin, and to be trigger end link with the 17th pin of IC2 the 4th pin, hummer D one termination IC3 the 3rd pin, the other end then links together.