CN204155378U - A kind of burglar alarm of full-bridge difference structure voltage sensitive sensor - Google Patents
A kind of burglar alarm of full-bridge difference structure voltage sensitive sensor Download PDFInfo
- Publication number
- CN204155378U CN204155378U CN201420610059.8U CN201420610059U CN204155378U CN 204155378 U CN204155378 U CN 204155378U CN 201420610059 U CN201420610059 U CN 201420610059U CN 204155378 U CN204155378 U CN 204155378U
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- sensitive sensor
- voltage sensitive
- surface shape
- spherical surface
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Abstract
The utility model discloses a kind of burglar alarm of full-bridge difference structure voltage sensitive sensor, comprise package casing, substrate, Internal Spherical Surface shape elastic support sheet, metal balls, voltage sensitive sensor and pin, described Internal Spherical Surface shape elastic support sheet is positioned at the cavity of package casing, described metal balls is positioned at above Internal Spherical Surface shape elastic support sheet, described voltage sensitive sensor is positioned at below substrate, and described voltage sensitive sensor is made up of 4 voltage dependent resistor (VDR)s.The utility model has the advantages that structure is simple, volume is little, with low cost, is applicable to applying.
Description
Technical field
The utility model belongs to sensor and photoelectric detection technology field, relates to a kind of burglar alarm of full-bridge difference structure voltage sensitive sensor.
Background technology
There is certain error in the alarm in currently available technology, in situation about being safe from danger, send alerting signal, can not prepare to judge to report to the police in what situations, sensitivity is low, poor stability, and cost is higher.
Utility model content
The purpose of this utility model is the defect overcoming the existence of above-mentioned technology, a kind of burglar alarm of full-bridge difference structure voltage sensitive sensor is provided, may be used for indoor valuables, art treasures burglar alarm, also may be used for the vehicle such as automobile and motorcycle burglar alarm.Its concrete technical scheme is:
A kind of burglar alarm of full-bridge difference structure voltage sensitive sensor, comprise package casing, substrate, Internal Spherical Surface shape elastic support sheet, metal balls, voltage sensitive sensor and pin, described Internal Spherical Surface shape elastic support sheet is positioned at the cavity of package casing, described metal balls is positioned at above Internal Spherical Surface shape elastic support sheet, described voltage sensitive sensor is positioned at below substrate, and described voltage sensitive sensor is made up of 4 voltage dependent resistor (VDR)s.
Preferably, described 4 voltage dependent resistor (VDR)s are composed in series Wheatstone bridge configuration.
Compared with prior art, the beneficial effects of the utility model are:
The burglar alarm without error of the utility model full-bridge difference structure voltage sensitive sensor, highly sensitive, good stability, and there is the effect of temperature compensation, the false alarm that the change of the temperature that can conform causes, structure be simple, volume is little, with low cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of the burglar alarm of full-bridge difference structure voltage sensitive sensor;
Fig. 2 is equivalent electrical circuit.
Embodiment
Below in conjunction with the drawings and specific embodiments, the technical solution of the utility model is described in more detail.
See Fig. 1, a kind of burglar alarm of full-bridge difference structure voltage sensitive sensor, comprise package casing, Internal Spherical Surface shape elastic support sheet, metal balls, voltage sensitive sensor and pin, described Internal Spherical Surface shape elastic support sheet is positioned at the cavity of package casing, described metal balls is positioned at above Internal Spherical Surface shape elastic support sheet, described voltage sensitive sensor is positioned at below substrate, and described voltage sensitive sensor is made up of 4 voltage dependent resistor (VDR)s.As shown in Figure 2, described 4 voltage dependent resistor (VDR)s are composed in series Wheatstone bridge configuration.
4 voltage dependent resistor (VDR)s are composed in series Wheatstone bridge configuration, are deposited on substrate, and metal balls is placed on the Internal Spherical Surface shape elastic support sheet at voltage sensitive sensor center, is then formed by epoxy encapsulation.If voltage sensitive sensor is vibrated, metal balls can move at Internal Spherical Surface shape elastic support sheet, changes to the pressure of voltage dependent resistor (VDR), cause voltage dependent resistor (VDR) resistance to change, cause the change of output voltage, after amplifying circuit process, just can drive hummer, realize anti-theft alarm function.
The above; be only the utility model preferably embodiment; protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses, the simple change of the technical scheme that can obtain apparently or equivalence are replaced and are all fallen in protection domain of the present utility model.
Claims (2)
1. the burglar alarm of a full-bridge difference structure voltage sensitive sensor, it is characterized in that, comprise package casing, substrate, Internal Spherical Surface shape elastic support sheet, metal balls, voltage sensitive sensor and pin, described Internal Spherical Surface shape elastic support sheet is positioned at the cavity of package casing, described metal balls is positioned at above Internal Spherical Surface shape elastic support sheet, described voltage sensitive sensor is positioned at below substrate, and described voltage sensitive sensor is made up of 4 voltage dependent resistor (VDR)s.
2. the burglar alarm of full-bridge difference structure voltage sensitive sensor according to claim 1, is characterized in that, described 4 voltage dependent resistor (VDR)s are composed in series Wheatstone bridge configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420610059.8U CN204155378U (en) | 2014-10-12 | 2014-10-12 | A kind of burglar alarm of full-bridge difference structure voltage sensitive sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420610059.8U CN204155378U (en) | 2014-10-12 | 2014-10-12 | A kind of burglar alarm of full-bridge difference structure voltage sensitive sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204155378U true CN204155378U (en) | 2015-02-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420610059.8U Expired - Fee Related CN204155378U (en) | 2014-10-12 | 2014-10-12 | A kind of burglar alarm of full-bridge difference structure voltage sensitive sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204155378U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106477512A (en) * | 2016-11-23 | 2017-03-08 | 苏州敏芯微电子技术股份有限公司 | Pressure sensor and its method for packing |
-
2014
- 2014-10-12 CN CN201420610059.8U patent/CN204155378U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106477512A (en) * | 2016-11-23 | 2017-03-08 | 苏州敏芯微电子技术股份有限公司 | Pressure sensor and its method for packing |
| CN106477512B (en) * | 2016-11-23 | 2018-07-31 | 苏州敏芯微电子技术股份有限公司 | Pressure sensor and its packaging method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150211 Termination date: 20151012 |
|
| EXPY | Termination of patent right or utility model |