A calibration method and device for a weight hanging calibration of a strain type tension sensor

CN123028751APending Publication Date: 2026-11-03SHENZHEN XJCSENSOR TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202611549440.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-10-08
Publication Date
2026-11-03

AI Technical Summary

Technical Problem

Existing strain gauge tension sensors, after installation, suffer from deviations in installation orientation and changes in wrap angle, causing the force conversion of the force measuring element to deviate from the factory calibration. On-site calibration requires measuring the wrap angle, making it difficult to ensure that the tension reading is consistent with the actual tension, and there is a lack of standardized verification procedures.

Method used

With the inspection roller stopped and in its actual installed state, the calibration component is used to bypass the inspection roller along the strip feeding path, and a known weight is suspended to form a standard tension. The zero point value and the suspended weight value are recorded. The calibration parameters are determined using a tension controller, and the validity is verified to ensure the standardization and accuracy of the calibration process.

Benefits of technology

The conversion parameters can be determined without measuring the wrapping angle, eliminating no-load bias, improving calibration reliability, ensuring tension closed-loop control accuracy, reducing the sensitivity dispersion of force measuring elements, and preventing erroneous parameters from entering the control system.

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Abstract

The present application relates to a kind of calibration method and device of weight hanging calibration of strain type tension sensor, belong to coiled material tension detection technical field.The present application is in the detection roller stop and keeps actual installation state, make calibration piece along the actual threading path of strip around detection roller, one end is fixed, another end hangs the first weight of known weight and naturally droops;Load-free acquisition force measuring element real-time millivolt value, record as zero point value after stable, the first weight is collected after loading along the threading path, and record as hanging weight value after stable;Input weight and full scale range, with zero point value corresponding zero tension, hanging weight value corresponding weight, determine the calibration slope and calibration coefficient of millivolt value conversion for tension indication value;After effectiveness verification and replacement second weight independent verification, when qualified, save parameter and enter tension measurement, according to calibration parameter output tension indication value, when unqualified, prohibit write-in and return to recalibration.
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