A pressure temperature sensor, electronic skin, robot

By combining a piezoelectric thin film with a polymer film, and using a common electrode to isolate piezoelectric force measurement and capacitive temperature measurement, the interference problem of piezoelectric materials when measuring pressure and temperature is solved, and simultaneous measurement of temperature and pressure with high sensitivity and fast response is achieved.

CN224471086UActive Publication Date: 2026-07-07SUZHOU TAOYU TECHNOLOGY CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SUZHOU TAOYU TECHNOLOGY CO LTD
Filing Date
2025-08-15
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

In existing technologies, piezoelectric materials suffer from inaccuracies in measuring pressure and temperature due to interference from capacitance measurement signals and the influence of double-sided adhesive elasticity, making it difficult to achieve simultaneous measurement of temperature and pressure with high sensitivity and rapid response.

Method used

The structure combines a piezoelectric thin film and a polymer film, using a common electrode to isolate piezoelectric force measurement and capacitive temperature measurement. Pressure is measured through the piezoelectric thin film, and temperature is measured through the polymer film. By utilizing the characteristic that the dielectric constant changes with temperature, combined with a capacitance-to-digital conversion circuit and a processing module, dual-sensitivity and fast-response measurement can be achieved.

Benefits of technology

It achieves simultaneous measurement of pressure and temperature with high sensitivity and rapid response, ensuring the accuracy and independence of the measurement, and avoiding interference from capacitance measurement on piezoelectric force and temperature measurement.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a pressure temperature sensor, electronic skin, robot, wherein the bottom surface of piezoelectric film sets pressure measurement electrode, sets common electrode between piezoelectric film top surface and macromolecular film bottom surface, and pressure measurement electrode and common electrode are output electrode of piezoelectric signal of piezoelectric film, macromolecular film is the insulating polymer of pressure deformation amount within 2 ‰, dielectric constant changes with temperature, top surface sets temperature measurement electrode, and temperature measurement electrode and common electrode form direct physical contact to corresponding surface of macromolecular film respectively, form the electric capacity sensing, common electrode is as ground electrode, or piezoelectric film and macromolecular film work periodically and time-sharing through the first gate switch, and processing module couples piezoelectric measurement branch, capacitance digital conversion circuit, is used for outputting pressure information according to piezoelectric signal of piezoelectric measurement branch and outputting temperature information according to capacitance signal of capacitance digital conversion circuit.
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