Micro pressure sensing electrode and sensing method

By using micro-pressure sensing electrodes in pharmaceutical weighing equipment and using dielectric elastomers to detect micro-pressure, the problem of inducing in the traditional Chinese medicine solution or powder when the weight of traditional Chinese medicine is lighter is solved, and a higher accuracy and convenient measurement process is achieved.

CN119756536APending Publication Date: 2025-04-04CANTECH TECH CO LTD
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Patent Information

Application Number
CN202311759505.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2023-12-20
Publication Date
2025-04-04

AI Technical Summary

Technical Problem

When existing pharmaceutical weighing equipment encounters light weight in the drug solution or powder, it cannot effectively sense the weight, resulting in inaccurate measurement and frequent adjustment of the test scale.

Method used

A micro-pressure sensing electrode is used, including a bottom plate and a pressure-receiving plate. The pressure-receiving plate is equipped with an acrylic insulated shell and a pressure-receiving mechanism. The pressure-receiving mechanism consists of an upper PCB plate, a lower PCB plate and a dielectric elastomer. The dielectric elastomer is composed of silicone rubber and copper calcium titanate and its derivatives, and is used to detect micro-pressure.

Benefits of technology

It realizes sensitive detection of microweights, improves the accuracy of drug weighing, and avoids the trouble of frequent adjustment of test weighing.

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Abstract

The invention discloses a micro-pressure sensing electrode and a sensing method, belonging to the technical field of pressure sensing, comprising a bottom plate and a pressure-receiving plate, wherein the pressure-receiving plate is arranged on the upper side of the bottom plate, an acrylic insulating shell is arranged at one end of the pressure-receiving plate and the bottom plate close to each other, a pressure-sensing mechanism is arranged between the two acrylic insulating shells, and the pressure-sensing mechanism is used for pressure detection; the pressure-sensing mechanism comprises an upper PCB board, a lower PCB board and a dielectric elastomer, wherein the upper PCB board and the lower PCB board are respectively installed in the two acrylic insulating shells, and the upper PCB board is located on the upper side of the lower PCB board, and the dielectric elastomer is arranged between the upper PCB board and the lower PCB board; in the invention, the dielectric elastomer is composed of a polymer material, and while ensuring elasticity, its supporting force is smaller than that of a spring, thereby replacing the setting of a traditional elastic member using a spring, and in addition, the force is measured by detecting the capacitance change of the dielectric elastomer, and the force is more sensitive, so that the sensing electrode can detect micro-pressure and increase the detection accuracy.
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