Pressure sensor

A pressure sensor and substrate technology, which is applied in the direction of instruments, force measurement, fluid pressure measurement by changing ohmic resistance, etc., can solve the problem that the small signal of the pressure sensor is easily interfered, and achieve the effect of high cost performance, enhanced strength, and good protection

Inactive Publication Date: 2013-08-21
WUXI CITY CHONGAN DISTRICT TECH ENTREPRENEURSHIP SERVICE CENT
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an anti-interference pressure sensor, which solves the problem that the small signal of the pressure sensor is easily disturbed

Method used

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  • Pressure sensor

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Embodiment Construction

[0018] Below in conjunction with accompanying drawing and embodiment the technical scheme of invention is described in detail:

[0019] Such as figure 1 As shown, the pressure sensor of the present invention includes a substrate 1, a metal resistance strain gauge 2, and a lead wire 4. The resistance strain gauge 2 is arranged on the base body 1, and the lead wire 4 is connected to the resistance strain gauge 2; this scheme also includes shielding protection layer 3, shielding wire 5; the shielding protection layer 3 is respectively connected to the base body 1 and the shielding wire 5, and the shielding wire 5 is drawn out of the base body 1; the shielding protection layer 3 is used to protect the metal resistance strain gauge from being damaged, and at the same time Prevent electromagnetic interference; the shielded wire 5 is used to connect the metal shell of the external device, and discharge the electromagnetic interference signal through the shielded wire 5 .

[0020] Th...

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Abstract

The invention discloses a pressure sensor which comprises a substrate (1), a metallic resistor strain foil (2) and a lead wire (4). The resistor strain foil (2) is arranged on the substrate (1), and the lead wire (4) is connected with the resistor strain foil (2). The pressure sensor further comprises a shielding protective layer (3) and a shielding wire (5). The shielding protective layer (3) is connected with the substrate (1) and the shielding wire (5) respectively, and the shielding wire (5) is led out of the substrate (1). The shielding protective layer (3) is used for preventing the metallic resistor restrain foil from being damaged and meanwhile avoiding electromagnetic interference. The shielding wire (5) is used for being connected with metallic outer shells of outside equipment, and electromagnetic interference signals are discharged through the shielding wire (5). According to the pressure sensor, anti-interference design is used, and high anti-interference capacity is achieved.

Description

technical field [0001] The invention relates to a pressure sensor, in particular to an anti-interference pressure sensor. Background technique [0002] Pressure sensor is the most common type of sensor in industrial applications. It is widely used in various industrial automatic control environments, involving water conservancy and hydropower, railway transportation, intelligent buildings, production automatic control, aerospace, military industry, petrochemical, oil wells, electric power, ships, machine tools, Pipeline and many other industries. [0003] The most common pressure sensor is made by using the piezoelectric effect. The resistance strain gauge deforms in the hand, which changes the voltage applied to the resistance of the strain gauge. Small, generally such strain gauges form a strain bridge, and are amplified by a subsequent instrument amplifier, and then transmitted to a processing circuit for display or execution, usually an AD converter and a CPU. [0004]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/22G01L9/04
Inventor 蔡玉莲
Owner WUXI CITY CHONGAN DISTRICT TECH ENTREPRENEURSHIP SERVICE CENT
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