CN2234206Y - Electronic theftproof purse - Google Patents

Abstract

The utility model belongs to purses, more specifically an electronic theftproof purse, mainly comprising a purse and an electronic theftproof device arranged in the interlayer of the purse. The utility model transforms the varying light signal into an electric signal through a light-sensitive apparatus to trigger an alarm system, wherein, the electronic theftproof device comprises a trigger circuit T1, a sound circuit IC1 and a silencing circuit T2 which are connected with the output terminal of the trigger circuit T1, and an output circuit T3 which is connected with the output terminals of the sound circuit IC1 and the silencing circuit T2. The utility model overcomes the defect existing in the present product that the loser can not discover immediately after lost, having the advantages of reasonable arrangement of each circuit apparatus, high sensitivity, convenient use, etc.

Description

The electronic anti-theft wallet

The utility model belongs to coin folder, specifically a kind of electronic anti-theft wallet.

The present daily entrained wallet of going shopping of resident, wallet often becomes the main target that the pickpocket notes, and above-mentioned wallet class article often can not made alarm indication to its owner when losing, and treat when the owner of lost property finds often lately, have brought very big inconvenience to people's lives.

The purpose of this utility model is to provide a kind of electronic anti-theft wallet, and this technology mainly adopts photodiode as sensing element, by the monitoring to environment, the variation of light is converted to the electric signal of abrupt change, triggers the warning part, reaches prompting owner's purpose.

One-piece construction of the present utility model is:

The electronic anti-theft wallet comprises wallet and is arranged at electric anti-thief device in the wallet interlayer; Electric anti-thief device comprises trigger circuit T ₁, pronunciation circuit IC ₁, output circuit T ₃, muffling circuit T ₂Trigger circuit T ₁Output terminal sending and receiving sound IC circuit ₁With muffling circuit T ₂Input end, pronunciation circuit IC ₁, muffling circuit T ₂Output terminal respectively with output circuit T ₃Input end link to each other.

The composition of each circuit unit of the utility model is:

Trigger circuit T ₁By photodiode D ₁, resistance R ₁, R ₂, R ₃, capacitor C ₁And triode BG ₁Form.

Muffling circuit T ₂By resistance R ₂With triode BG ₂Form.

Output circuit T ₃By capacitor C ₂, resistance R ₄, diode D ₂And triode BG ₃Form.

Accompanying drawing of the present utility model has:

Fig. 1 is a block scheme of the present utility model.

Fig. 2 is an electrical schematic diagram of the present utility model.

Among the figure, D ₁Be photodiode, R ₁-R ₅Be resistance, IC ₁Be commercially available RD music-integrating block, BG ₁-BG ₃Be triode, C ₁, C ₂Be electric capacity, D ₂Be diode, Y is a piezoelectric speaker, L ₁Be telefault.

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail:

The one-piece construction of present embodiment as shown in Figure 1 and Figure 2, power supply adopts the 3V button cell, quiescent current＜10 μ A, working current＜4mA, when light is dark, D ₁Internal resistance very big, when light strengthens, D ₁Internal resistance descending respective change, D take place ₁With R ₁Intrinsic standoff ratio jump down C ₁With R ₂The change in voltage of jumping down, BG also appear in the differentiating circuit of forming ₁Conducting thereupon, R ₃There is electric current to pass through, BG ₁Collector voltage is just jumped, this positive pulse voltage triggered music integrated block IC ₁, make music circuit start working, with C ₁Charging current reduces, BG ₁Be tending towards ending, musical film is no longer triggered, and light is by bright during to dark the variation, D ₁Internal resistance increases, D ₁With R ₁Intrinsic standoff ratio raises, C ₁Pass through R ₂Discharge makes BG ₁End, do not produce trigger pip, but enter the triggering state for the treatment of.IC ₁Can select commercially available RD series music-integrating block for use, and form various music circuits as required, by C ₂, D ₂, R ₄, BG ₃Deng formation output circuit T ₃, BG ₃Drive piezoelectric speaker Y pronunciation, L ₁In parallel with Y, its effect is the volume of electric current to obtain to be satisfied with that improves by piezoelectric patches, R ₅With BG ₂Constitute muffling circuit, when the user does not wish the loudspeaker Y pronunciation, as long as block D ₁Incident light, this moment BG ₂Conducting makes the output signal shorted to earth of musical film, can eliminate sound.When mounted whole circuit elements devices are installed in the wallet interlayer.

The obtained technological progress of the utility model is that each circuit devcie is reasonable in design, flexibly Degree is high, and is easy to use.

Claims (4)

1, electronic anti-theft wallet comprises wallet and is arranged at electric anti-thief device in the wallet interlayer; It is characterized in that electric anti-thief device comprises trigger circuit T ₁, pronunciation circuit IC ₁, output circuit T ₃, muffling circuit T ₂Trigger circuit T ₁Output terminal sending and receiving sound IC circuit ₁With muffling circuit T ₂Input end, pronunciation circuit IC ₁, muffling circuit T ₂Output terminal link to each other with the input end of output circuit T3 respectively.

2, electronic anti-theft wallet according to claim 1 is characterized in that trigger circuit T ₁By photodiode D ₁, resistance R ₁, R ₂, R ₃, capacitor C ₁And triode BG ₁Form.

3, electronic anti-theft wallet according to claim 1 is characterized in that muffling circuit T ₂By resistance R ₂With triode BG ₂Form.

4, electronic anti-theft wallet according to claim 1 is characterized in that output circuit T ₃By capacitor C ₂, resistance R ₄, diode D ₂And triode BG ₃Form.

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