CN2053864U

CN2053864U - Light-operated anti-thief purse

Info

Publication number: CN2053864U
Application number: CN 89214136
Authority: CN
Inventors: 高林章; 孙立山
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-07-21
Filing date: 1989-07-21
Publication date: 1990-03-07

Abstract

The utility model relates to a combination of a light-control circuit and a wire pack anti-theft purse which can send out sound when the purse is in light. The utility model is characterized in that an integrated circuit is flexible encapsulated in a circuit board. The circuit is also provided with a photoresistor and a switch, and a piezoelectric ceramics sounder. A light-control circuit board is arranged in the sandwich layer of the dedicated space of the purse, a light hole arranged in the external surface is over aganist the photosensitive resistor, and a sheet-shaped push-pull switch is arranged near the light hole which can control the shutting of the circuit to make the purse has the function of alarming in light. The utility model has the advantages of small size, low power consumption, convenient operation, high valuable use, diversification, low cost and convenient production.

Description

Light-operated anti-thief purse

The utility model relates to a kind of light-operated circuit and combines with wallet, sees the wallet of light sounding.

Present antitheft wallet, the scheme of the employing machinery that has, the technical scheme of the employing electronics that also has.The antitheft wallet of magnetic control for example is at the additional small magnet in the periphery of wallet, when wallet is stolen when having left additional small magnet circuit working, sounding alarm.Also have, adopt radiotechnics, electric capacity or inductance (soft-touch control) control circuit etc. technical scheme.Result of use is all undesirable.The utility model is to adopt the light-operated circuit technical scheme to solve, and has overcome the deficiency of all kinds of in the past antitheft wallets.It is simple and reliable utilizing difference control circuit sounding, the advantage of the inside and outside light intensity of pocket, the interference that not changed by other physical quantitys.

The purpose of this utility model provides a kind of photo-electric special IC and wallet reasonable combination, sees the light sounding, in case wallet is stolen, and effective antitheft wallet of reporting to the police.

The purpose of this utility model is achieved in that the core of circuit is the integrated circuit of the hybrid technique of a special use.Comprising the main circuit of CMOS technology and the transistor of a bipolar technology.Whether circuit works by the decision of photo resistance value, and in the dark, resistance is big, and circuit is not worked, and is little in the photo resistance of bright place, circuit working.During circuit working, timesharing alternately provides the square wave of 1K or 800 hertz, amplifies the back to microphone device (piezoelectric ceramics) through the one-level transistor, clangs.Integrated circuit, transistor is encapsulated on one 25 * 25(mm) the circuit board by soft, and elements such as light-sensitive element, switch, button cell, piezoelectric ceramic piece also are installed on the circuit board, and all these are called the light-operated circuit plate.The light-operated circuit plate is installed in the positive special-purpose interlayer of wallet, opens an aperture on the outer surface and makes light-sensitive element can see light, has made a push-and-pull switch that sheet is attractive in appearance on the next door of seeing unthreaded hole, can open and close by control circuit.

The utlity model has reliable operation, advantages such as power consumptive province.

The utility model concrete structure is provided by following examples and accompanying drawing:

Accompanying drawing 1 is the structure chart in light-controlled antitheft wallet front.The mid portion of figure is that the people who has shaved off wallet removes from office extexine so that see the structure that is installed in the light-operated circuit plate in the bag clearly.

Describe detail of the present utility model in detail below in conjunction with Fig. 1:

1. circuit board, 2. cmos circuit and driving transistors constitute hydrid integrated circuit, soft being packaged together, 3. contactor, 4. 3. sheet push-and-pull switch can control switch in that bag is outer, 5. 6. button cell (2) of photo resistance, 7. battery folder reed (2), 8. inductor, 9. piezo-electric ceramic sounding sheet, the 10. front of wallet, (11) see unthreaded hole

Can see the photosensitive resistance that is installed in the wallet from the hole.

Accompanying drawing 2 is building-block of logic of the utility model light-operated circuit,

Square frame f is oscillator, transfers Rf can produce the square wave of 128KHZ, becomes the square wave of 1KHZ or 800HZ through 128 or 160 frequency divisions, again the square wave of 1KHZ through 2⁷Frequency division becomes nearly 8HZ square wave, and with the positive-negative half-cycle of this nearly 8HZ square wave, controlling respectively frequency division is 128 or 160, and namely output is 1KHZ or 800HZ square wave, this two signal and optically-controlled signal phase with, amplify again promotion acoustical generator sounding alarm through the one-level transistor.

Light-operated part is made up of divider and two phase inverters that integrated resistor D and photo resistance R consist of. When a little less than the light, the R value is big, and A point voltage VA is high potential, and oscillator f does not work, and output is blocked with door, not output. When light was strong, the R value was little, the VA electronegative potential, and the work of f oscillator allows to pass through 1KHZ or 800HZ signal with door, amplifies through transistor BG, makes the microphone device sounding. The K switch of connecting with photo resistance, this switch can be controlled by the sheet push-and-pull switch on the wallet skin.

Claims

1, light-controlled antitheft wallet, 2. the integrated circuit that it is characterized in that hybrid technique is encapsulated on the circuit board by soft, photo resistance also is housed above circuit board 5. reaches switch 3., piezoelectric ceramic sounder 9., it is positive with in the interlayer of special space that the light-operated circuit plate is installed in wallet, open on the outer surface and see that unthreaded hole faces photo resistance, seeing that 4. the unthreaded hole next door has made a sheet push-and-pull switch, can close by the control circuit circuit.

2,, it is characterized in that the hybrid technique integrated circuit is 2. comprising cmos circuit and transistor according to the described light-controlled antitheft wallet of claim 1.