Wire locator, absolute positioning system, absolute positioning method and calibration method

Abstract

The application discloses a wire locator, an absolute location system, an absolute location method and a calibration method. The wire locator of the application comprises a spherical shell, an electrode plate group, and a base. A wire channel is arranged in the axis of the spherical shell. The electrode plate group is composed of four strip electrode plates of equal size. The four electrode plates are installed in the wire channel along the wire channel direction. The four electrode plates are arranged in a way that two electrodes plate are parallel to each other and the other two electrodes plate are parallel to each other, and are arranged above, below, to the left and to the right of the axis of the spherical shell in mirror symmetry. The symmetry plane of the upper and lower electrode plates is perpendicular to the symmetry plane of the left and right electrode plates, and the line of intersection of the two symmetry planes coincides with the axis of the spherical shell. The spherical shell is movably installed on the base, and the spherical shell can rotate on the base along the axis in which the wire channel is arranged. According to the wire locator of the invention, a metal wire loaded with radio frequency signals is located relatively using the four electrode plates, and then, the spatial coordinates of the spherical shell are measured, the absolute position of the spherical shell is determined, and the wire is located absolutely.

Description

technical field [0001] The present application relates to the field of wire positioning equipment, in particular to a wire positioning instrument, an absolute positioning system, an absolute positioning method and a calibration method. Background technique [0002] At present, wires are more and more widely used in ultra-high precision measurement, but the positioning accuracy of wires has not improved. Because the silk thread is small and soft, even a small force will affect the measurement accuracy, so it is impossible to obtain high measurement accuracy by using the contact measurement method; optical measurement instruments such as theodolite and total station need to be aimed at the same measurement point in order to calculate For the three-dimensional position in space, it is difficult to measure the same point for the silk thread with no difference in the length direction, so it is impossible to obtain high measurement accuracy. [0003] Several existing wire locatin...

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Problems solved by technology

But there is no absolute positioning reference, only relative position measurement

[0007] The wire displacement monitor is a wire positioning device reported by Zhuhongyan et al. in the literature "Design and simulation of a wire position monitor for cryogenic systems in an ADS linac" Chinese Physics C.Vol.38, No.8 (2014). It is used to measure the shrinkage of the equipment position in the cryostat. It is mainly aimed at the relative change of the equipment position during the temperature change of the equipment. The relative position measurement accuracy can reach 30 microns, but there is no accurate external reference, and the absolute position cannot be measured.

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