Hybrid mode pressure probe with integrated temperature detector and method of making same

By integrating a temperature detector and hybrid operating modes into pressure sensors, the sensitivity and linearity issues of traditional pressure sensors are solved, enabling pressure sensors with a wide linear measurement range and high sensitivity, and real-time temperature detection, thus improving the stability and reliability of design and manufacturing.

CN122408892APending Publication Date: 2026-07-17ZHONGBEI UNIV

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHONGBEI UNIV
Filing Date
2026-06-12
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing pressure sensors have an inherent trade-off between sensitivity and linearity, making it difficult to achieve a balance between a wide linear measurement range and high sensitivity, and they also lack the ability to accurately detect temperature.

Method used

A hybrid-mode pressure sensing device with an integrated temperature detector combines CMUTs (Combined Temperature Detectors) and a resistive temperature sensor. The CMUTs operate as capacitive or resonant pressure sensors in different pressure ranges and extend the measurement range through hybrid mode, while the integrated resistive temperature sensor performs real-time temperature detection.

Benefits of technology

This invention achieves a pressure sensor with a wide linear measurement range and high sensitivity, and can accurately detect temperature in real time, improving the stability and reliability of design and manufacturing, and reducing complexity and cost.

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Abstract

本发明属于MEMS压力传感器技术领域,具体为一种集成温度检测器的混合模式压力探测装置及其制备方法,解决了现有压力传感器采用单一的工作模式导致灵敏度和测量范围不能同时提升以及温度检测精度低的技术问题。一种集成温度检测器的混合模式压力探测装置,包括集成在单个芯片上的混合模式压力传感器以及温度传感器;混合模式压力传感器采用CMUTs作为敏感元件,所述CMUTs包括多个CMUT单元结构,且所有CMUT单元的尺寸相同且相互并联,CMUTs在P0‑P1压力范围内作为电容式压力传感器工作,CMUTs在P1‑P2压力范围内作为谐振式压力传感器工作;每个CMUT单元的工作电压始终低于该CMUT单元的塌陷电压。
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