Linear displacement measuring device

Abstract

The invention discloses a linear displacement measuring device, and relates to a measuring device. The linear displacement measuring device comprises a rotating position sensor, a fixing piece, a spring and two supporting legs, wherein the two supporting legs are connected through the rotating position sensor, a center hole of the rotating position sensor is connected with an end shaft of one endof one supporting leg, an outer shell of the rotating position sensor is connected with one end of the other supporting leg, the fixing piece is installed at one ends of the two supporting legs, and the two supporting legs can rotate relative to the fixing piece; and the spring connected with the two supporting legs is arranged between the two supporting legs, and contact surfaces which are in surface contact with an existing soft-bodied robot are arranged at the other ends of the two supporting legs correspondingly. According to the linear displacement measuring device, linear displacement measurement is converted into angle measurement, so that the measurement is reliable, fast and accurate.

Description

technical field [0001] The invention relates to a measuring device, in particular to a linear displacement measuring device for measuring the deformation of a soft robot. Background technique [0002] For soft robots, the measurement of soft body deformation is very important. At present, there are mainly two measurement methods, namely contact measurement and non-contact measurement. [0003] Most non-contact measurements are based on visual methods. This measurement method usually uses industrial cameras and visual processing algorithms for measurement. Due to the distortion characteristics of industrial cameras and low frame rate, coupled with the time complexity of visual processing algorithms, visual measurement usually has poor accuracy. The defect of poor speed. [0004] Contact measurement mainly uses a linear rod-type resistance gauge position sensor. Due to the inherent resistance of the rod-type resistance gauge, it will affect the deformation of the soft robot...

AI Technical Summary

Problems solved by technology

This measurement method usually uses industrial cameras and visual processing algorithms for measurement. Due to the distortion characteristics of industrial cameras and low frame rate, coupled with the time complexity of visual processing algorithms, visual measurement usually has poor accuracy. Defects of poor speed

[0004] Contact measurement mainly uses a linear pull-rod resistance gauge position sensor. Due to the inherent resistance of the pull-rod resistance gauge, it will affect the deformation of the soft robot, thereby affecting the accuracy and reliability of the measurement.

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