Pressure sensing detection device

Abstract

The invention discloses a pressure sensing detection device which comprises a cover body, a connecting spring, a first metal piece, an insulating isolation piece and a second metal piece. The interiorof the cover body is connected with a first metal piece through a connecting spring; the outer ring of the first metal piece is connected with the insulating isolation piece; a second metal piece isarranged on the outer ring of the insulating isolation piece; a pressure sensing detection device is arranged; a parallel overlapping structure design of positive and negative plates is adopted; the positive plate and the negative plate are respectively connected with two different signals; moreover, the parallel structure can generate extrusion dislocation, and positive and negative plates are overlapped and dislocated to form the change of parallel plate coupling capacitance; the device can be miniaturized by utilizing the similar elastic pin structure design; a pressure sensing detection scheme can be conveniently realized in a small space structure; the pressure F can be linearly converted into the change of a capacitance value C; and the magnitude of the F can be accurately calculated.

Description

technical field [0001] The invention relates to the related field of pressure detection, in particular to a pressure sensing detection device. Background technique [0002] At present, there are pressure-sensitive material methods, capacitance detection methods, and micro-mechanical structure MEMS methods to solve the pressure detection requirements. [0003] The pressure-sensitive material method uses special polymer material properties to produce changes in the physical characteristics of resistance or capacitance when the material is squeezed or stretched. Then through subsequent electronic circuits and software processing, the physical quantities of resistance and capacitance are detected to identify the magnitude of the pressure. The micro-mechanical structure MEMS method includes silicon piezoresistive pressure sensors and silicon capacitive pressure sensors, both of which are micro-mechanical electronic sensors generated on silicon chips. Silicon piezoresistive pres...

AI Technical Summary

Problems solved by technology

[0005] However, the detection of the existing pressure-sensitive detection device is not stable enough in mass production and assembly, and the assembly and assembly cannot be completely consistent.

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