Detection method for displacement sensor, storage medium and processor

By obtaining the changes in the sampled values ​​of the displacement sensor and the flow difference of the proportional valve in the multi-cylinder jacking system of the tower crane, the abnormality of the sensor or the fault of the hydraulic system can be determined, thus solving the problem of inaccurate jacking synchronization of the tower crane and improving the safety and synchronous reliability of the tower crane.

CN117068975BActive Publication Date: 2026-07-24ZOOMLION HEAVY INDUSTRY SCIENCE AND TECHNOLOGY CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZOOMLION HEAVY INDUSTRY SCIENCE AND TECHNOLOGY CO LTD
Filing Date
2023-07-13
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

In the existing technology, when the tower crane multi-cylinder lifting system uses displacement sensors for synchronous control, the reliability of the sensor sampling values ​​is not judged, which leads to inaccurate judgment of cylinder synchronization and may cause a safety accident of tower crane tipping over during lifting.

Method used

By acquiring the sampled values ​​of the displacement sensor based on a preset time interval in the multi-cylinder lifting system, determining the amount of change in the sampled values, and combining this with the valve opening degree and flow difference of the proportional valve, the system can determine whether the sensor is abnormal or the hydraulic system is faulty, thus ensuring the reliability of cylinder synchronization.

Benefits of technology

This improves the safety of tower crane jacking, reduces the risk of jacking overturning, and ensures cylinder synchronization and hydraulic system reliability through testing methods.

✦ Generated by Eureka AI based on patent content.

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Abstract

Embodiments of the present application provide a detection method for a displacement sensor, a processor and a storage medium. The method comprises: controlling a plurality of oil cylinders to operate synchronously in a jacking state of a multi-oil-cylinder jacking system; obtaining sampling values of the displacement sensor at two adjacent time points based on a preset time interval; determining a change quantity between the sampling values at the two adjacent time points; and determining that the displacement sensor is abnormal in a case where the change quantity is less than or equal to a preset speed judgment threshold. Through the above technical solution, the working state of each displacement sensor can be judged through the change quantity of the sampling value of each displacement sensor, the synchronous loss of control of the oil cylinder due to the abnormality of the displacement sensor itself is avoided, the reliability of the jacking synchronization of the oil cylinder is ensured, the risk of jacking overturning of the tower crane is reduced, and the safety of jacking of the tower crane is improved.
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