US 12,306,020 B1
Magnetostrictive displacement sensor calibration method, system, device, and storage medium
Haiquan Li, Guangdong (CN); Bingzhu Lin, Guangdong (CN); and Huaxiang Zhang, Guangdong (CN)
Assigned to GUANGDONG RUNYU SENSOR CO., LTD, Guangdong (CN)
Appl. No. 18/850,693
Filed by GUANGDONG RUNYU SENSOR CO., LTD, Guangdong (CN)
PCT Filed Apr. 15, 2024, PCT No. PCT/CN2024/087746
§ 371(c)(1), (2) Date Jan. 7, 2025,
PCT Pub. No. WO2024/230413, PCT Pub. Date Nov. 14, 2024.
Claims priority of application No. 202310495636.7 (CN), filed on May 5, 2023.
Int. Cl. G01D 18/00 (2006.01); G01B 11/14 (2006.01); G01D 5/16 (2006.01)
CPC G01D 18/001 (2021.05) [G01B 11/14 (2013.01); G01D 5/16 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A magnetostrictive displacement sensor calibration method, comprising:
obtaining all sub-ranges after a range of a magnetostrictive displacement sensor is segmented;
obtaining a start moment and an end moment of each sub-range to obtain a time region of each sub-range;
determining a target time region of a current moment, and calculating to obtain a calibration speed of a target sub-range based on a target start moment, a target end moment and a target sub-range of the target time region;
calculating a first displacement on the target sub-range based on the calibration speed, the current moment and the target start moment; and
accumulating the first displacement with all sub-ranges before the target sub-range to obtain a displacement of the current moment;
wherein obtaining all the sub-ranges after the range of the magnetostrictive displacement sensor is segmented comprises:
determining a start position of the magnetostrictive displacement sensor for segmenting the range of the magnetostrictive displacement sensor;
predetermining a displacement length of each sub-range;
using the start position as a start point to start to move a non-contact magnetic ring of the magnetostrictive displacement sensor; and
performing displacement marking when a movement distance of the non-contact magnetic ring reaches the displacement length of each sub-range, to segment the range of the magnetostrictive displacement sensor, to obtain each sub-range by marking.