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Pressure Sensor

A technology of pressure sensor and external pressure, which is applied in the direction of measuring fluid pressure, instruments, and measuring fluid pressure through electromagnetic components, etc. It can solve the problems affecting the accuracy of pressure and achieve the effect of improving accuracy

Inactive Publication Date: 2017-03-08
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the resistance value of the pressure-sensitive film corresponding to the external pressure does not change linearly, which will affect the accuracy of pressure measurement

Method used

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Embodiment Construction

[0015] The pressure sensor provided by the present invention will be described in detail below in conjunction with specific embodiments.

[0016] see figure 1 and figure 2 , the pressure sensor 100 provided by the present invention includes a base 10 , a pressure sensitive film 20 and an elastic cover 30 .

[0017] In this embodiment, the base 10 is substantially cylindrical. The base 10 includes a bottom wall 11 and a first side wall 12 . The first side wall 12 is vertically connected to the bottom wall 11 and encloses a first receiving space 111 .

[0018] Please also refer to image 3 and Figure 4 , the pressure sensitive film 20 is disposed between the base 10 and the elastic cover 30 . Specifically, the pressure sensitive film 20 is disposed in the first receiving space 111 . The peripheral portion of the pressure sensitive film 20 is fixed on the top of the first side wall 12 . In this embodiment, the thickness of the pressure sensitive film 20 is less than 1 m...

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Abstract

The invention relates to a pressure sensor. The pressure sensor includes a base, a pressure sensitive film and an elastic cover. The pressure sensitive film is located in the base and teh elastic cover, and is fixed on the base. The protruding column presses against the pressure sensitive film, the resistance of the pressure sensitive film reaches a bias point, and when an external pressure acts on the elastic cover, and the resistance of the pressure sensitive film is virtually linear corresponding to the external pressure.

Description

technical field [0001] The invention relates to a pressure sensor. Background technique [0002] In the field of mechanical pressure sensors, pressure-sensitive films are usually used as sensing elements for sensing external pressure. The pressure-sensitive film has different resistance values ​​corresponding to different external pressures. However, the resistance value of the pressure-sensitive film corresponding to the external pressure does not change linearly, which will affect the accuracy of pressure measurement. Contents of the invention [0003] In view of this, it is necessary to provide a pressure sensor that can make the resistance of the pressure-sensitive film corresponding to the external pressure within a linear variation range. [0004] A pressure sensor includes a base, a pressure-sensitive film and an elastic cover. The pressure-sensitive film is arranged between the base and the elastic cover, and is fixed on the base. The elastic cover is provided ...

Claims

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Application Information

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IPC IPC(8): G01L9/04
CPCG01L9/006G01L9/0051
Inventor 张仁淙
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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