用于测量矢量力的传感器装置和方法

By using a flexible covering structure and an optical reflective surface to change the optical path, the problem of robustness and accurate measurement of existing force sensors in high-density arrays is solved, realizing accurate measurement and integration of external vector forces, which is suitable for a variety of application scenarios.

CN122409033APending Publication Date: 2026-07-17
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Filing Date
2026-03-24
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing force sensors are difficult to achieve robust and compact external force sensing in high-density sensor arrays. They cannot accurately distinguish and measure combinations of axial normal force, tangential shear force, and rotational torque. Furthermore, the sensors are easily damaged and difficult to integrate into compact modular packages.

Method used

The electronic chip and photodetector are packaged using a flexible encapsulation structure. Light is reflected by the optical reflective surface, and the optical path is changed by the deformation caused by the external vector force. The electronic chip processes the optical signal to estimate the force component, realizing direct mechanical coupling and high-density array integration.

Benefits of technology

It enables accurate differentiation and measurement of external vector forces, improves mechanical robustness, reduces wiring complexity, is suitable for high-density array integration, and is applicable to applications such as electronic skin systems, wearable devices, and robot sensing.

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Abstract

本申请公开了一种用于测量外部矢量力的力传感装置及其相关方法。该装置包括一基底,其上支撑有一电子芯片、至少一个发光源以及至少一个光探测元件,且上述部件均封装在一柔性包覆结构内。所述柔性包覆结构包含至少一个内部腔体,该腔体具有光学反射表面。由发光源发射的光经所述光学反射表面反射后,朝向光探测元件传播。外部施加的矢量力引起柔性包覆结构发生形变,从而改变光学路径,并在光探测元件检测到的辐照度分布中产生的可测量的变化。利用所述变化可估算外部矢量力的一个或多个分量,包括轴向分量、切向分量以及旋转分量。该力感测装置可布置成阵列,或集成至电子皮肤系统中,以实现可扩展的高分辨率触觉感测。
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