Universal joint type dimensional decoupling two-dimensional wireless passive sensor

Abstract

The invention discloses a universal joint type dimensional decoupling two-dimensional wireless passive sensor which comprises an upper sensor bearing joint, an upper supporting sleeve, an upper universal joint rigid structure body, a lower sensor bearing joint, a lower supporting sleeve, a lower universal joint rigid structure body, a lower torque bearing body, an upper torque bearing body, a torque structure sealing ring, a torque transmission movable rod, a rigid connecting circular plate, a bent rectangular variable ring and a torque bearing sliding block, wherein the upper torque bearing body is cylindrical. The universal joint type dimensional decoupling two-dimensional wireless passive sensor provided by the invention can simultaneously detect the bending force component and the torsion force component in the coupling force, namely, the coupling force is subjected to structural decoupling; moreover, the data acquisition is not required to be connected into a power supply circuitor through a wired interface; and the universal joint type dimensional decoupling two-dimensional wireless passive sensor can be applied to the medical field, and the direction of a human body implanted sensor greatly reduces the segments of burying lines or secondary operations in a human body after the sensor is implanted into the human body.

Description

technical field [0001] The invention belongs to the technical field of sensors, in particular to a universal joint type inter-dimensional decoupling two-dimensional wireless passive sensor. Background technique [0002] A sensor is a device and device that can sense a specified measured value and convert it into a usable signal according to a certain rule, usually consisting of a sensitive element and an elastic element. Multidimensional force sensor is a force sensor that can measure force and moment information in more than two directions at the same time, and is widely used in robotics, bioengineering, industrial manufacturing, medical and health and other fields. [0003] Two-dimensional or even multi-dimensional force sensors in the prior art are mainly divided into resistance strain sensors, piezoelectric force sensors, and capacitive force sensors, which are simple in structure, sensitive and high in precision. The structure of the sensor is to paste or install the s...

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Problems solved by technology

[0004] However, when the sensor is subjected to the combination of torsional stress and bending stress, the sensor in the prior art often compensates and decouples the strain gauges by forming a bridge, and the mechanical structure does not have the ability to decouple the torsional stress and the bending stress.

[0005] Existing two-dimensional / multi-dimensional sensors, because wires must be used to connect strain gauges, even if information is transmitted by radio, the battery contains limited power, so it is difficult to achieve long-term dynamic monitoring

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