Method for calibrating sensitivity of multiple sensors

Abstract

The invention discloses a method for calibrating the sensitivity of multiple sensors. The method comprises the following steps that a plurality of acceleration sensors to be calibrated and a plurality of standard acceleration sensors are fixed above the work surface of a vibrating table and below the work surface of the vibrating table respectively in a back-to-back mode, and the multiple sets of acceleration sensors to be calibrated and the standard acceleration sensors are electrically connected with detection equipment. According to the calibrating method, the acceleration sensors to be calibrated and the standard acceleration sensors are fixed above the work surface and below the work surface respectively in back-to-back and one-to-one correspondence modes, so that when the acceleration sensors to be calibrated are calibrated, the influence of the flatness and the evenness of the work surface is avoided, and the errors of the calibration results of all the acceleration sensors to be calibrated can not happen in the batch calibration process. Accordingly, the calibrating method saves time and labor, and improves working efficiency.

Description

technical field [0001] The invention relates to a sensor sensitivity detection method, in particular to a multi-sensor sensitivity calibration method. Background technique [0002] Acceleration sensors or accelerometers are important measurement elements in mechanical environment monitoring and are widely used in monitoring and measurement in various fields. The output sensitivity of the acceleration sensor needs to be calibrated during the manufacturing process and after a period of use. The dynamic calibration of the acceleration sensor has two calibration methods: the absolute method and the comparative method. The absolute calibration method is based on the standard mass reference object in the excitation environment, and is used for the calibration of high-precision sensors or standard acceleration sensors; the comparative calibration method is to use the acceleration to be calibrated The sensor is in the same excitation environment as the standard acceleration sensor,...

AI Technical Summary

Problems solved by technology

If a standard acceleration sensor is used to calibrate multiple acceleration sensors to be calibrated on the same workbench, due to processing problems, the surface on the workbench cannot achieve the ideal uniformity, and there must be a certain degree of difference, which will inevitably lead to the unevenness of each sensor. The error of the calibration result, therefore, only one acceleration sensor to be calibrated can be calibrated on a workbench

In this way, not only time-consuming and labor-intensive, but also low work efficiency

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