Movable electrode of variable capacitor, pressure sensor and blood pressure measuring equipment

A pressure sensor and moving electrode technology, used in fluid pressure measurement using capacitance change, variable capacitors, pressure sensors, etc., can solve problems affecting sensor linearity, distance error, parallelism error, etc., to improve production efficiency and assembly. Simple process and high installation accuracy
CN101982864AActive Publication Date: 2011-03-02SHENZHEN KINGYIELD TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHENZHEN KINGYIELD TECH
Publication Date
2011-03-02

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Abstract

The invention discloses a movable electrode of a variable capacitor, which comprises a platy pressure sensing part and an elastic deformation part arranged in the radial direction of the platy pressure sensing part, wherein the pressure sensing part and the elastic deformation part are connected together; and when the force is applied to the pressure sensing part in the axial direction, the elastic deformation part can generate corresponding deformation to enable the pressure sensing part to move along the axial direction. The invention also discloses an electrode device adopting the movable electrode, a pressure sensor and a pressure gauge adopting the pressure sensor and a manufacturing method thereof. By adopting the invention, the pressure sensor has fewer parts, simpler assembly processes, higher production efficiency and lower manufacturing cost.
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Description

【Technical field】

[0001] The invention relates to a movable electrode of a variable capacitor, an electrostatic capacitance type pressure sensor and blood pressure measuring equipment. It specifically relates to a movable electrode, an electrode device, a pressure sensor and a manometer using the pressure sensor of an electrostatic capacity type pressure sensor, and is especially suitable for measuring blood pressure. 【technical background】

[0002] At present, the pressure sensors used in electronic sphygmomanometers are divided into two types, one is semiconductor silicon pressure sensors, and the other is electrostatic capacitive pressure sensors.

[0003] Typical electrostatic capacitive pressure sensors, such as Japanese invention patent: manufacturing method of electrostatic capacitive pressure sensors, JP-P-6-307959, such as figure 1 shown. The capacitive pressure sensor proposed by this invention includes a base 10, an air nozzle 11 and a corrugated plate 12 fixed ...

Claims

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