CN2274359Y - Knocking-vibration alarm - Google Patents

Abstract

The utility model relates to an alarm device, particularly a knocking-vibration alarm device. The utility model comprises a vibration sensor and an alarm, wherein, the vibration sensor is an electronic vibration sensor and is composed of a ceramic buzzing sheet T1, transistors BG 1 and BG 2, a resistor and a capacitor. The vibration sensor can also be a mechanical vibration sensor. The alarm is composed of an electronic alarm trigger delay circuit, an alarm sound generating circuit IC and a loudspeaker SP. The alarm can send out alarm sound when the sensor is impacted. The utility model has the advantages of simple and reliable circuit, small power consumption and low cost. The utility model can be matched with an anti-prizing lock, a strong box, a desk, a file cabinet, a door or a window, and the goal of anti-theft alarm is realized.

Description

Knock the vibration warning device

The utility model relates to a kind of warning device, particularly a kind of vibration warning device that knocks.

Present burglar alarm, as Chinese patent 96212492 remote-control burglar alarms, 96212493 light burglar alarm safety cabinets, they are to utilize microswitch fork-like farm tool used in ancient China control to report to the police, and open safety cabinet and just report to the police, and pound to hit safety cabinet and can not send chimes of doom.

The purpose of this utility model is that a kind of certain external force (knocking) that is subjected to of design causes vibration and the device of warning, particularly a kind of vibration warning device that knocks.It is widely used in antitheft, the anti-riot warning of various occasions.

The purpose of this utility model is to realize like this.Vibration transducer and alarm combined promptly to become knock the vibration warning device.

Describe below in conjunction with accompanying drawing.

Vibration transducer structural representation in Fig. 1 the utility model.

Electronic vibration sensor circuit schematic diagram in Fig. 2 the utility model.

Alarm circuit schematic diagram among Fig. 3 the utility model embodiment.

Fig. 4 vibration transducer shell synoptic diagram.

One of Fig. 5 embodiment vibration transducer structure synoptic diagram.

One of Fig. 6 embodiment vibration transducer structure synoptic diagram.

Fig. 7 embodiment vibration transducer shell mechanism synoptic diagram.

Fig. 8 alarm profile synoptic diagram.

Referring to Fig. 1～3, the utility model is a kind of vibration warning device that knocks, involving vibrations sensor 1, vibration transducer shell 2, alarm 3 and body case of annunciator 4, it is characterized in that vibration transducer 1 is an electronic vibration sensor, it is by ceramic piezo T1, transistor BG1, BG2 and resistance, electric capacity is formed, the termination power negative pole of ceramic piezo T1 wherein, the input resistance R3 of another termination transistor BG1 of T1, the other end connecting resistance R1 of resistance R 3 and the base stage of transistor BG1, the collector connecting resistance R2 of transistor BG1 and capacitor C 1, another termination electricity group R4 and transistor BG2 of capacitor C 1, resistance R 4 other ends and transistor BG1, the emitter of BG2 connects power cathode, resistance R 1, the collector of R2 and transistor BG2 meets output terminal S1 through diode D1; Alarm 3 is to trigger delay circuit by electronic warning, chimes of doom generation IC circuit and loudspeaker SP form, wherein the emitter of transistor BG4 connects power cathode, the current collection of transistor BG4 is input end S2 very, it and resistance R 5, R6 connects, the base stage of another termination transistor BG3 of resistance R 6, resistance R 5 connects the emitter of transistor BG3, capacitor C 2 and positive source, another termination power cathode of capacitor C 2, the current collection of transistor BG3 is output terminal very, it is connected with resistance R 7 with diode D2 through capacitor C 3, the base stage of another termination transistor BG4 of resistance R 7, transistor BG3 collector also links to each other with 1 pin with the V end of resistance R 8 and chimes of doom generation IC circuit, the other end of diode D2, another termination power cathode of resistance R 8, the 3rd pin of IC connects the base stage of transistor BG5, the collector of transistor BG5 connects positive source through loudspeaker SP, and the emitter of transistor BG5 links to each other with the E pin of IC, and the E pin connects power cathode.

When sensor is subjected to impacting, the electric signal that ceramic piezo T1 output one changes with oscillation intensity, this signal is coupled to next stage through C1 after the amplifier of brilliant utmost point pipe BG1 and resistance R 1, R2 and R3 formation amplifies.When oscillation intensity is enough big, brilliant utmost point pipe BG2 conducting, also conducting of diode D1, output terminal S1 is a low level, S1 is connected with the input end S2 of alarm, make transistor BG3 conducting, thereby the collector at BG3 obtains high level, this level provides control voltage to chimes of doom generation IC circuit, voltage owing to capacitor C 3 two ends can not suddenly change on the other hand, high level makes transistor BG4 conducting by resistance R 7, continues conducting thereby keep transistor BG3, is charged to transistor BG4 up to C3 by resistance R 7 and ends.Transistor BG3 also ends thereupon, and chimes of doom generation this moment IC circuit stops to report to the police.The 3rd pin output of IC is amplified through transistor BG5, promotes loudspeaker SP and sends chimes of doom.This time of fire alarming was by C3 and R7 decision, about one minute.

Chimes of doom generation IC circuit is with four tones of standard Chinese pronunciation warning special IC 9561.

Referring to Fig. 4, the shell 2 of vibration transducer 1 is a square casing, is provided with lid 5 above, has dug circular groove 6 at the bottom of the box, and its diameter is identical with diameter and the thickness of ceramic piezo T1 with the degree of depth.Pottery piezo T1 is placed in the groove 6, and the electronic vibration sensor is placed in, and buckles lid then.

Referring to Fig. 5, vibration transducer is a mechanical vibration sensor, and it is made up of insulcrete 7, Metallic rod 8 and spring 9, and spring 9 upwards is contained on the insulcrete 7, and Metallic rod 8 is placed on the center of spring 9, and the one end is fixed on the insulcrete 7.Metallic rod 8 connects power cathode, and spring 9 is that output terminal S1 is connected with S2.When sensor was subjected to impacting, S1 was a low level, and S2 also is a low level, can make chimes of doom generation IC circuit send chimes of doom.

Referring to Fig. 6, vibration transducer is a mechanical vibration sensor, and it is made up of insulcrete 7, metal cap 10, spring 9 and Metal Ball 11, and Metal Ball 11 is welded on the spring 9, and spring 9 is lifted on the insulcrete 7, and the outside is buckled with metal cap 10.Metal cap 10 connects power cathode, and spring 9 is that output terminal S1 is connected with S2.When sensor was subjected to impacting, S1 was a low level, and S2 also is a low level, can make chimes of doom generation IC circuit send chimes of doom.

Referring to Fig. 7, the shell 2 of vibration transducer 1 is a square casing, is provided with lid 5 above, and relative inboard, both sides has groove 12.During use, in the insulcrete 7 insertion grooves 12 with vibration transducer, buckle lid 5 then.

The utility model circuit is simple, reliable, power consumption is little and cost is low.The utility model can supportingly be contained on pick-proof lock, proof box, desk, file cabinet, door or the window, reaches the purpose of burglar alarm.

Claims (5)

1, a kind of vibration warning device that knocks, involving vibrations sensor 1, vibration transducer shell 2, alarm 3 and body case of annunciator 4, it is characterized in that vibration transducer 1 is an electronic vibration sensor, it is by ceramic piezo T1, transistor BG1, BG2 and resistance, electric capacity is formed, the termination power negative pole of ceramic piezo T1 wherein, the input resistance R3 of another termination transistor BG1 of T1, the other end connecting resistance R1 of resistance R 3 and the base stage of transistor BG1, the collector connecting resistance R2 of transistor BG1 and capacitor C 1, another termination electricity group R4 and transistor BG2 of capacitor C 1, resistance R 4 other ends and transistor BG1, the emitter of BG2 connects power cathode, resistance R 1, the collector of R2 and transistor BG2 meets output terminal S1 through diode D1; Alarm 3 is to trigger delay circuit by electronic warning, chimes of doom generation IC circuit and loudspeaker SP form, wherein the emitter of transistor BG4 connects power cathode, the current collection of transistor BG4 is input end S2 very, it and resistance R 5, R6 connects, the base stage of another termination transistor BG3 of resistance R 6, resistance R 5 connects the emitter of transistor BG3, capacitor C 2 and positive source, another termination power cathode of capacitor C 2, the current collection of transistor BG3 is output terminal very, it is connected with resistance R 7 with diode D2 through capacitor C 3, the base stage of another termination transistor BG4 of resistance R 7, transistor BG3 collector also links to each other with 1 pin with the V end of resistance R 8 and chimes of doom generation IC circuit, the other end of diode D2, another termination power cathode of resistance R 8, the 3rd pin of IC connects the base stage of transistor BG5, the collector of transistor BG5 connects positive source through loudspeaker SP, and the emitter of transistor BG5 links to each other with the E pin of IC, and the E pin connects power cathode.

2, by the described vibration warning device that knocks of claim 1, the shell 2 that it is characterized in that vibration transducer 1 is square casings, is provided with lid 5 above, has dug circular groove 6 at the bottom of the box, and its diameter is identical with diameter and the thickness of ceramic piezo T1 with the degree of depth.

3, by the described vibration warning device that knocks of claim 1, it is characterized in that vibration transducer is a mechanical vibration sensor, it is made up of insulcrete 7, Metallic rod 8 and spring 9, and spring 9 is upwards on dress insulcrete 7, Metallic rod B is placed on the center of spring 9, and the one end is fixed on the insulcrete 7.

4, by the described vibration warning device that knocks of claim 1, it is characterized in that vibration transducer is a mechanical vibration sensor, it is made up of insulcrete 7, metal cap 10, spring 9 and Metal Ball 11, Metal Ball 11 is welded on the spring 9, spring 9 is lifted on the insulcrete 7, and the outside is buckled with metal cap 10.

5, by the described vibration warning device that knocks of claim 1, the shell 2 that it is characterized in that vibration transducer 1 is square casings, is provided with lid 5 above, and relative inboard, both sides has groove 12.

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