CN2145415Y

CN2145415Y - Draw money case with electric siren

Info

Publication number: CN2145415Y
Application number: CN 92242837
Authority: CN
Inventors: 何明洲; 肖兵
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-12-25
Filing date: 1992-12-25
Publication date: 1993-11-03
Anticipated expiration: 2002-12-25

Abstract

The utility model relates to a money withdrawal and deposit tool with the function of automatic alarm. The utility model is formed by that a receiving circuit is installed in a box body; the receiving circuit receives signals from an antenna and inputs the signals into a demodulation circuit for high-frequency gating, signal amplification, and audio decoding, and thereby, a switch suppression circuit is driven, and a sounding circuit and a loudspeaker are controlled. A transmitting circuit is composed of an audiosignal generator, a filter circuit, and a high-frequency oscillating circuit. When the box body is far away from users, the utility model can automatically send out the sound of alarm. The utility model has the advantages of simple structure and principle, convenient carrying, economical applicability, etc.

Description

Draw money case with electric siren

The utility model relates to a kind of money instrument of withdrawing deposit with warning function.

In the past unit or individual to bank carry out that wholesale is withdrawn deposit, during deposit, use be instrument such as bag, when stolen or when plundering, can not send auto alarm signal, present do not have also that a kind of special use that can report to the police is automatically carried, deposit boxes when running into fortuitous event.

The utility model purpose provides a kind of casing intensity height, is easy to carry, and the electronic warning that can send alerting signal under unexpected situation is automatically carried, deposit boxes.

The utility model is by casing, radiating circuit, receiving circuit is formed, receiving circuit is positioned at the bottom of casing, loudspeaker is installed around casing, the antenna of receiving circuit inputs to signal demodulator circuit and carries out the high frequency gating by detecting circuit, signal behind the gating inputs to amplifying circuit, amplification circuit output end inserts decoding circuit, the decoding circuit output terminal inserts switching tube and suppresses circuit, and drive controlling phonation circuit, circuit output end takes place with control and links to each other in loudspeaker, the audio signal generator output terminal and the on-off circuit of radiating circuit join, the output signal of on-off circuit inserts high frequency oscillator after by filtering circuit, is connected to by L between the oscillating tube collector of high frequency oscillator and the base stage, the frequency-selecting feedback circuit that C forms.

The utlity model has simple, the outer case intensity height, in light weight, easy to carry of structural principle,, can send characteristics such as alerting signal automatically when casing during away from carrier's certain distance.

Accompanying drawing 1 is the utility model body structure synoptic diagram.

Accompanying drawing 2 is the utility model receiving circuit schematic diagram.

Accompanying drawing 3 is the utility model radiating circuit schematic diagram.

Below in conjunction with accompanying drawing structure of the present utility model and principle are further described, in the radiating circuit of the present utility model, audio signal generator 10 is by transistor BG ₁, BG ₂Form the electronic switching tube BG of this audio signal output end and on-off circuit 11 ₃Link to each other, through the L of filtering circuit 12 ₁, L ₂, C ₃After be coupled to by BG ₄And C ₄, L ₂The high frequency oscillator of forming 13, and high-frequency modulation signal gone out by transmission antennas transmit, at BG ₄Base, emitter-base bandgap grading between be connected to by L ₃, C ₆The frequency-selecting feedback circuit of forming 14, the R of audio signal generator ₁, C ₁In order to the control audio frequency.The antenna 2 of receiving circuit inputs to demodulator circuit 3 with the signal that receives, by by L ₅, C ₉After the detecting circuit of forming carries out the high-frequency signal gating, deliver to amplifying circuit 5, amplifying circuit is by BG ₆, BG ₇, BG ₈Three utmost points are formed, and the output terminal of amplifying circuit inserts decoding circuit 6, the BG in the decoding circuit ₉And L ₆, C ₁₆Sound signal is carried out gating, and sound signal suppresses the BG of circuit 7 by switch ₁₀, BG ₁₁, drive controlling generation circuit 8(IC ₁), BG ₁₁Play non-gate action, in order to suppress IC ₁, otherwise loudspeaker generation alarm sound, IC ₁Output insert loudspeaker 9, receiving circuit is installed in the bottom of casing 1.Principle of work of the present utility model is such, transmitter is positioned at user's pocket, when the user when bank carries or deposits, open the switch of radiating circuit and receiving circuit, alarm enters the preliminary work state, when the user suffers unexpected plunder or when stolen, casing is during away from user's certain distance (coverage is more than 4 meters), the utility model just sends audio alert or distress call automatically, and casing is to be made by soft hard steel plate, and built-in lock and mechanical code lock are installed.

Claims

1, electronic warning is put forward deposit boxes, be by casing, radiating circuit, receiving circuit and loudspeaker are formed, it is characterized in that receiving circuit is positioned at the bottom of casing 1, loudspeaker is installed around casing, the antenna 2 of receiving circuit inputs to signal demodulator circuit 3 and carries out the high frequency gating by detecting circuit 4, signal behind the gating inputs to amplifying circuit 5, amplification circuit output end inserts decoding circuit 6, the decoding circuit output terminal inserts switching tube and suppresses circuit 7, and drive controlling phonation circuit 8, circuit output end takes place with control and links to each other in loudspeaker 9, audio signal generator 10 output terminals and the on-off circuit 11 of radiating circuit join, the output signal of on-off circuit inserts high frequency oscillator 13 by filtering circuit 12 backs, is connected to by L between the oscillating tube collector of high frequency oscillator and the base stage, the frequency-selecting feedback circuit 14 that C forms.