Magnetic array position sensing device and positioning method thereof

Abstract

The invention relates to a sensing device and a positioning method thereof, in particular to a magnetic array position sensing device and a positioning method thereof. The magnetic array position sensing device comprises a permanent magnetic body device 1 which is provided with a magnetic array 101 and a magnetic sensitive element device 2 which is matched with the permanent magnetic body device 1 and is provided with a magnetic sensitive element array 201, wherein the magnetic sensitive element device 2 is fixed on a main circuit board 7 which contains a distance test device 3, and the magnetic sensitive element array 201 is fixed on the magnetic sensitive element device 2 through a fixing device 4. The magnetic array position sensing device has the following advantages that: 1. an independent positioning plate is adopted, and the magnetic sensitive element is welded on the positioning plate, so the position error of the magnetic sensitive element is reduced; 2. the relationship between the width of the magnetic body array unit and the gap of the magnetic sensitive element is re-designed, so under the condition that the precision of the system is maintained, the distance between the magnetic sensitive elements is enlarged, the consumption of the magnetic sensitive element is reduced, and the cost of the device is reduced.

Description

technical field [0001] The invention relates to a sensing device and a positioning method thereof, in particular to a magnetic array position sensing device and a positioning method thereof. Background technique [0002] A permanent magnet array is installed on one object, and a magnetic sensor array and circuit are installed on another object. The magnetic sensor array receives the periodic magnetic field of the permanent magnet array and performs signal processing to measure the relative displacement of the two objects. The technology is widely used. . This type of device has the advantages of no wear, resistance to harsh environments, fast response speed, etc., and high measurement accuracy, and has been made into a dedicated integrated circuit such as HLA32. The output signal is scanned, and there is an example of judging the position of a row of 8 permanent magnets. In the case of long distances, the electric scanning is performed in sections to judge the position of t...

AI Technical Summary

Problems solved by technology

[0004] The present invention mainly solves the problems in the prior art that the uniformity of the magnetic field of the magnet is relatively poor, and the positioning of the magnetic sensitive element has errors; in the positioning method, when the distance between the magnetic sensitive elements increases, the technical problems such as the decrease of the measurement accuracy will be caused, and the invention provides A magnetic array position sensing device with good magnetic field uniformity, basically no errors in the positioning of magnetic sensitive elements, and no decrease in measurement accuracy when the distance between magnetic sensitive elements increases, and a positioning method thereof

[0005] Another object of the present invention is to solve the technical problems of the prior art that the distance between the magnetic sensitive elements is small, resulting in a large amount of magnetic sensitive elements used and increased cost, and to provide a magnetic sensitive element with a large distance between the magnetic sensitive elements Magnetic array position sensing device with low component usage and low cost and its positioning method

[0006] Another purpose of the present invention is to solve the technical problems in the prior art that the positioning speed is too slow due to the intermediate process of determining decimals, and to provide a magnetic array position that does not have an intermediate process of determining decimals and has a high positioning speed. Sensing device and positioning method thereof

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