CN2081529U

CN2081529U - Omnibearing vibrating sensor

Info

Publication number: CN2081529U
Application number: CN 91211134
Authority: CN
Inventors: 王珏; 王海斌
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-01-12
Filing date: 1991-01-12
Publication date: 1991-07-24

Abstract

The utility model relates to an omnibearing vibrating sensor. The vibrations of an omnibearing resonant element can be transmitted by a rod component to push the diaphragm of an electret microphone to vibrate, and the output signals of the microphone can be changed, and the vibrations of various objects can be detected. The utility model has the advantages of powerful performances of resisting sound waves and electromagnetic wave interference, small size and reliable work, being widely applicable as a sensing element for various fields with vibrating conditions, comprising autocontrol, anti-theft alarm, earthquake detection, the periodic observation of pressure on mine top plates, etc.

Description

Omnibearing vibrating sensor

The utility model is a kind of comprehensive vibration transducer, belongs to sensor field.

At present, along with the develop rapidly of science and technology, various sensors constantly are exploited, and capacitance-type vibration formula sensor has appearred in sensor that be used to vibrate, Chinese patent is disclosed on August 2nd, 89, application number is 88105108.X, and the application people is Zhao Xijing, and the vibration receiving element that is adopted is a condenser type, the spring leaf oscillator is vertically fixed on the pole plate of electric capacity, a weight is fixed on the oscillator top, and this sensor is mainly used in side-to-side vibrations, can not comprehensively vibrate.

The purpose of this utility model just is to overcome the deficiency of prior art, provides a kind of and can comprehensively vibrate and volume is less, simple in structure, be easy to make, cost is low, the sensor of highly sensitive, reliable operation.

The utility model is to realize in the following way: whole by screening can, vibration receive converting unit, oscillator, the counterweight that links to each other with the oscillator top reaches the stitch that goes out that links to each other with screening can and forms.Feature of the present utility model is: it is electret microphone that vibration receives converting unit, and rigid bar 1 is fixed on the microphone sound film 4, and spiral fashion oscillator 3 is vertically fixed on the rigid bar 1.

Fig. 1 is the structural representation of the comprehensive vibration transducer of the utility model.

Fig. 2 is the vertical view of the comprehensive vibration transducer of the utility model.

Fig. 1,2 also is a most preferred embodiment of the present utility model.The utility model is described in further detail below in conjunction with accompanying drawing 1,2:

In Fig. 1,2, wherein: 1 rigidity rod member, 2 counterweights, 3 flat spin oscillators, 4 electret microphone sound films, 5 electret microphones, 6 screening cans, 7 go out stitch.As shown in Figure 1, the center fixation of flat spin oscillator 3 is at an end of rigidity rod member 1, its outside terminal is added with counterweight 2, the other end of rigidity rod member 1 is fixed on the sound film 4 of electret microphone 5, and flat spin oscillator 3 places between two planes of electret microphone 5 and screening can 6, and maintain a certain distance, in order to protect the super destruction that prevents when shaking oscillator 3, except that going out stitch 7, all the other elements all are encapsulated in the metallic shield shell 6 closely, therefore have the very strong anti-sound wave and the interference performance of anti-electromagnetic wave.

Sensor of the present utility model in use, sensor is fixed on the object of vibration, no matter object produces the vibration of which direction, flat spin oscillator 3 can both freely produce vibration on corresponding direction, and be delivered to by rigidity rod member 1 on the sound film 4 of electret microphone 5, make sound film 4 produce corresponding vibration, in order to change the internal driving of electret microphone 5, and draw corresponding switching signal from going out stitch 7, reach the purpose of vibration detection.

The utility model is owing to adopting flat spin oscillator 3, so can reach the purpose of comprehensive vibrating sensing.Along with the difference that oscillator 3 physical dimensions are selected, can make the comprehensive vibration transducer of the plurality of specifications of the various levels of shaking.According to principle of the present utility model, can be that oscillator is made comprehensive vibration transducer also with spiral pipe.

Compared with prior art, the utlity model has following advantage:

1, owing to employing flat spin oscillator, and the very thin wire of oscillator employing, so highly sensitive, starting of oscillation is effective, and can Omnibearing vibrating.

2, volume is little, makes simply, and cost is low, safety, reliable.

3, be applicable to the various vibrations of inspected object, can be widely used in automatic control, burglar alarm, earthquake detection, the observation of mine forecast pressure cycle etc. has the every field of vibration condition to make comprehensive vibrating sensing element.

Claims

1, a kind of comprehensive vibration transducer, receiving counterweight that converting unit, oscillator link to each other with top on the oscillator by hermetically sealed screening can, vibration reaches the stitch that goes out that links to each other with screening can and forms, of the present utility model being characterised in that: it is electret microphone 5 that vibration receives converting unit, rigid bar 1 is fixed on the sound film 4 of microphone, and spiral fashion oscillator 3 is fixed on the rigid bar 1.