Touch sensing device

Abstract

The invention relates to a touch sensing device. The touch sensing device comprises a sensing disc, a probe and a strain gauge, wherein the probe is vertically arranged on the induction disc; the strain gauges comprise a first strain gauge, a second strain gauge, a third strain gauge and a fourth strain gauge; the first strain gauge, the second strain gauge and the third strain gauge are all arranged on the same surface of the induction disc; the first strain gauge and the second strain gauge are symmetrically arranged by taking a straight line intersecting with the central axis of the probe on the plane as a symmetry axis; the third strain gauge is arranged on a straight line; the fourth strain gauge is arranged on the other surface, corresponding to the third strain gauge, of the induction disc; and the first strain gauge, the second strain gauge, the third strain gauge and the fourth strain gauge are used for acquiring contrast voltages on X, Y and Z axes when the probe is in contact with the target object so as to form a three-dimensional coordinate of the target object. The touch sensing device is advantaged in that touch detection is not affected by the material of the object to be detected, the surface material and the material of the probe, and the use is more convenient.

Description

technical field [0001] The invention belongs to the technical field of touch sensing, and in particular relates to a touch sensing device. Background technique [0002] The existing touch sensing method is to energize the probe, generate a corresponding current after the probe contacts the object under test, and process the current accordingly to obtain the data of the object under test, especially in the machining industry. The above-mentioned methods are used to detect the surface data. [0003] However, when rust and oxidation occur on the surface of the metal workpiece, it will lead to poor electrical conduction on the metal surface, which will cause misjudgment or damage to the probe. In addition, if the surface of the metal processing part is covered with an insulating layer or a non-conductive material, the probe of the touch sensor will not be able to work directly, and must be assisted by other cumbersome conductive methods. Contents of the invention [0004] In...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems in the prior art that the sensor is affected by the material of the object and the scope of application is limited, the present invention provides a touch sensing device, which has the function of making the touch detection independent of the material of the object to be measured, the surface material and the probe Material influence, wider application range, etc.

Images