CN2833745Y

CN2833745Y - Burglar alarm for handbag

Info

Publication number: CN2833745Y
Application number: CN 200520127955
Authority: CN
Inventors: 田景文; 高美娟
Original assignee: Beijing Union University
Current assignee: Beijing Union University
Priority date: 2005-09-28
Filing date: 2005-09-28
Publication date: 2006-11-01
Anticipated expiration: 2015-09-28

Abstract

The utility model relates to a kind of burglar alarm, particularly a kind of case and bag burglar alarm of recording alarm sound voluntarily.The utility model comprises power supply, trigger circuit and warning circuit, described warning circuit comprises a speech chip and playing circuit, described power supply all links to each other with described speech chip with playing circuit, can be after trigger circuit are received signal, by being preset at the alarm sound in the speech chip.In addition, also comprise a recording circuit, described recording circuit also links to each other with described speech chip, sets unique alarm sound according to user's needs, plays the antitheft effect of better caution.

Description

The case and bag burglar alarm

Technical field

The utility model relates to a kind of burglar alarm, particularly a kind of case and bag burglar alarm of recording alarm sound voluntarily.

Technical background

The alerting signal that existing burglar alarm uses the manufacturer to preset mostly, sounding effect is bad, so be difficult to play good prompting effect, alerting signal sound is more single in addition, can't be according to user's needs, record unique alarm sound, conventional alarm sound is difficult to the attention that causes that people are enough, nature its less than better pointing out effect.

The utility model content

The utility model has overcome above-mentioned shortcoming, and a kind of simple in structure, case and bag burglar alarm that sounding effect is good is provided.

The technical scheme in the invention for solving the technical problem is: comprise power supply, trigger circuit and warning circuit, described warning circuit comprises a speech chip and playing circuit, and described power supply all links to each other with described speech chip with playing circuit.

Also can comprise a recording circuit, described recording circuit also links to each other with described speech chip.

Described recording circuit can comprise recording control circuit and recording Acquisition Circuit, and links to each other with described speech chip respectively.

Described trigger circuit can comprise one 555 and trigger delay circuit and at least one trigger switch or pressure transducer.

Also can comprise a power switch that is used to control entire circuit work, and be connected between power supply and other each several part circuit.

Described recording control circuit can comprise two switches, be respectively playback switch and recording switch, one end of two switches links to each other and ground connection, the other end is connected to the level playback control end and the recording control end of described speech chip, and level playback control end is connected working power by two pull-up resistors respectively with the recording control end.

Described recording Acquisition Circuit can comprise an electronics Mike and the peripheral circuit that links to each other with described speech chip, the two ends of described electronics Mike MIC connect described speech chip through two electric capacity respectively, through being connected to power end behind a resistance, an electrochemical capacitor and another resistance, the end that described electrochemical capacitor links to each other with first resistance also links to each other with described electronics Mike's the other end by the 3rd resistance the end of described electronics Mike MIC successively.

Described speech chip can be 20 seconds high-fidelity audio record circuits of monolithic.

The utility model comprises power supply, trigger circuit and warning circuit, described warning circuit comprises a speech chip and playing circuit, described power supply all links to each other with described speech chip with playing circuit, can be after trigger circuit are received signal, by being preset at the alarm sound in the speech chip.In addition, also comprise a recording circuit, described recording circuit also links to each other with described speech chip, sets unique alarm sound according to user's needs, plays the antitheft effect of better caution.

Description of drawings

Fig. 1 is a circuit block diagram of the present utility model

Fig. 2 is circuit theory diagrams of the present utility model

Embodiment

As shown in Figure 1, 2, the utility model mainly is made of speech chip and the trigger circuit that link to each other with described speech chip respectively, playing circuit, recording control circuit and recording Acquisition Circuit.Described speech chip U1 adopts 20 seconds high-fidelity audio record circuits of monolithic ISD1420.Playing circuit adopts ventional loudspeakers LS and directly links to each other with the SP-end with the SP+ of described speech chip U1.

Described trigger circuit comprise one 555 and trigger delay circuit U2, with a pressure transducer S4, one end of described trigger switch connects power supply, the other end is connected to the trigger end that institute's journey 555 triggers delay circuit U2, the output terminal of described triggering delay circuit U2 connects the triggering playback control PLAYL end of described speech chip U1, when touching pressure transducer S4, make described 555 triggering delay circuit U2 obtain the working power signal, and send low level signal to the PLAYL of described speech chip U1 end, control described loudspeaker LS by described speech chip U1 and send the prompt tone of prerecording.Described trigger switch can be provided with a plurality of as required, and parallel with one another, is arranged on the diverse location of case and bag, for example handle place, slide fastener place, case lock place.

Described recording control circuit comprises two switches, be respectively playback switch S2 and recording switch S3, one end of two switches links to each other and ground connection, the other end is connected to level playback control end PLAYE end and the recording control end REC end of described speech chip U1, when pressing recording switch S3, insert low level, described speech chip U1 begins to carry out recording operation, record the alarm sound of hope, when pressing described playback switch S2, also insert low level, described speech chip U1 begins to carry out play operation, the alarm sound that audition is recorded.In addition, because described triggering playback control PLAYL end, level playback control end PLAYE end and recording control end REC should be high level at triggering state not, then need connect working power by three pull-up resistor R8, R7, R6 at these three end pin.

Described recording Acquisition Circuit comprises an electronics Mike MIC and the peripheral circuit that links to each other with described speech chip, capacitor C 4 is passed through at the two ends of described electronics Mike MIC respectively, C5 is connected to the MIC REF end and the MIC end of described speech chip, the end of described electronics Mike MIC passes through resistance R 4 successively, be connected to power end after electrochemical capacitor C1 and the resistance R 1, the end that described capacitor C 1 links to each other with resistance R 1 is also with crossing the end that with capacitor C link to each other of another resistance R 3 with described electronics Mike MIC, the end that described capacitor C 1 links to each other with resistance R 4 also links to each other with the recording indication output end RECLED end of described speech chip U1 simultaneously, described recording indication output end RECLED end also is connected with a light emitting diode through a resistance R 9 simultaneously, be used for recording state is indicated, the positive pole of described light emitting diode D1 is connected described power end, and negative pole connects described resistance R 9.

Described working power end Vcc is connected power supply with the each part mentioned above circuit a end is in series with a power switch S1, is used for totally controlling the startup work of entire circuit, and described working power can be provided by general dry battery, is convenient for carrying and uses.

The case and bag owner can prerecord the alarm prompt tone of expectation, when the case and bag owner leaves case and bag, open alarm power switch S1, entire circuit enters duty, if there is other people to lift handle or pulling during slide fastener, touches described pressure transducer S4, the chimes of doom of sending out and prerecording by described speech chip U1 control loudspeaker LS then, and can realize multipass, the long-time broadcast of reporting to the police by delay function, the warning this person, and cause that personnel note on every side.

More than suitcase burglar alarm provided by the utility model is described in detail, used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.

Claims

1. a case and bag burglar alarm comprises power supply, trigger circuit and warning circuit, it is characterized in that: described warning circuit comprises a speech chip and playing circuit, and described power supply all links to each other with described speech chip with playing circuit.

2. case and bag burglar alarm according to claim 1 is characterized in that: also comprise a recording circuit, described recording circuit also links to each other with described speech chip.

3. case and bag burglar alarm according to claim 2 is characterized in that: described recording circuit comprises recording control circuit and recording Acquisition Circuit, and links to each other with described speech chip respectively.

4. according to claim 1 or 2 or 3 described case and bag burglar alarms, it is characterized in that: described trigger circuit comprise one 555 and trigger delay circuit and at least one trigger switch or pressure transducer.

5. according to claim 1 or 2 or 3 described case and bag burglar alarms, it is characterized in that: also comprise a power switch that is used to control entire circuit work, and be connected between power supply and other each several part circuit.

6. according to claim 2 or 3 described case and bag burglar alarms, it is characterized in that: described recording control circuit comprises two switches, be respectively playback switch and recording switch, one end of two switches links to each other and ground connection, the other end is connected to the level playback control end and the recording control end of described speech chip, and level playback control end is connected working power by two pull-up resistors respectively with the recording control end.

7. according to claim 2 or 3 described case and bag burglar alarms, it is characterized in that: described recording Acquisition Circuit comprises an electronics Mike and the peripheral circuit that links to each other with described speech chip, the two ends of described electronics Mike MIC connect described speech chip through two electric capacity respectively, through being connected to power end behind a resistance, an electrochemical capacitor and another resistance, the end that described electrochemical capacitor links to each other with first resistance also links to each other with described electronics Mike's the other end by the 3rd resistance the end of described electronics Mike MIC successively.

8. according to claim 1 or 2 or 3 described case and bag burglar alarms, it is characterized in that: described speech chip is 20 seconds high-fidelity audio record circuits of monolithic.