Online zero-drift elimination method and apparatus for force / tactile sensor, and device

By acquiring and updating the no-load physical field similarity index of the force/tactile sensor online, the zero drift problem caused by changes in the external environment of the sensor is solved, thereby improving the force measurement accuracy and stability of the sensor.

WO2026152845A1PCT designated stage Publication Date: 2026-07-23PAXINI TECHNOLOGY (SHENZHEN) CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
PAXINI TECHNOLOGY (SHENZHEN) CO LTD
Filing Date
2025-11-05
Publication Date
2026-07-23

AI Technical Summary

Technical Problem

Existing force/tactile sensors suffer from zero drift and reduced force measurement accuracy due to factors such as current noise, external magnetic fields, and changes in temperature and humidity in the operating environment.

Method used

By obtaining the similarity index between the current physical field and the unloaded physical field online, it is determined whether an external force is applied. If there is no external force, the unloaded physical field is updated; otherwise, the steps are repeated until the current physical field without external force is obtained, thus eliminating zero drift.

Benefits of technology

The force measurement accuracy of the force/tactile sensor has been improved. Zero drift has been eliminated by updating the unloaded physical field online, thus enhancing the stability of the sensor.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN2025132762_23072026_PF_FP_ABST
    Figure CN2025132762_23072026_PF_FP_ABST
Patent Text Reader

Abstract

Embodiments of the present application relate to the technical field of force sensing, and relate to an online zero-drift elimination method and apparatus for a force / tactile sensor, and a device. The method comprises: acquiring the current physical field in the process of a force / tactile sensor measuring an external force applied on an object; calculating a similarity index between the current physical field and a no-load physical field; on the basis of the similarity index, determining whether the external force is currently loaded; if it is determined that no external force is applied, replacing the no-load physical field with the current physical field to obtain an updated no-load physical field; and if it is determined that the external force is applied, repeating said steps of the method. The technical solution used in the present application can effectively eliminate zero drift in the sensor.
Need to check novelty before this filing date? Find Prior Art