Central shaft type inter-dimensional decoupling three-dimensional wireless passive sensor

Abstract

The invention discloses a central shaft type inter-dimensional decoupling three-dimensional wireless passive sensor, which comprises a central shaft upper section, a bending moment upper sealing ring,a bending moment strain ring, a bending moment ejector rod, a bending moment outer supporting ring, a bending moment inner supporting ring, a central shaft middle section, a torque outer supporting shell, a torque transmission piece, a torque strain gauge, an axial force strain gauge, an axial force transmission piece, a central shaft lower section and an axial force outer supporting shell. According to the central shaft type inter-dimensional decoupling three-dimensional force/torque wireless passive sensor, the magnitude and the direction of each component force in the coupling force can bedetected at the same time, that is, the coupling force is subjected to structural decoupling; data does not need to be acquired through connection of a power supply line or through a wired interface;the sensor can be applied to the medical field and the human body implanted sensor direction, and greatly reduces the link of wire embedding or secondary operation in the human body after the sensoris implanted into the human body.

Description

technical field [0001] The invention relates to a central axis type inter-dimensional decoupling three-dimensional wireless passive sensor, which belongs to the technical field of sensors. Background technique [0002] At present, multi-dimensional and even six-dimensional force sensors are mainly divided into resistance strain type, piezoelectric type and capacitive force sensor, which are simple in structure, sensitive and high in precision. However, this type of sensor is decoupled by algorithm, and there are still structural problems in the separation rate of coupling force and response accuracy. [0003] The structure of the sensor is to paste or install the strain-sensitive element on the elastic element of a certain shape or by other methods. When the mechanical quantity acts on the elastic element, the elastic element deforms, and the resistance value of the strain-sensitive element changes accordingly, and then the resistance value change is converted into a voltag...

AI Technical Summary

Problems solved by technology

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

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