Method for testing performance consistency of built-in three-axis acceleration sensor of product

Abstract

The invention provides a method for testing the performance consistency of a three-axis acceleration sensor, and belongs to the field of sensor testing. The device comprises a clamping mechanism, an excitation mechanism, a product connecting mechanism, a sound insulation and vibration isolation mechanism and a signal testing system, according to the test method provided by the invention, the acceleration value of a certain frequency point can be calibrated, the sensitivity is obtained, and the acceleration value in the whole concerned frequency band can be measured; the method can be applied to the testing of products with different shapes, different clamping schemes are customized according to the products with different shapes, and the testing and calibration of diversified products are achieved. The acceleration in three directions can be measured, independent testing in each direction is not needed, calibration in three directions can be completed at one time, batch testing can be carried out on a large number of products, the testing speed is high, and the method can be used for detecting the consistency of batch products, detecting the difference of product performance and screening out abnormal samples.

Description

technical field [0001] The invention belongs to the field of sensor testing. Specifically, it relates to a method for batch testing the performance consistency of a built-in three-axis acceleration sensor for irregular products. Background technique [0002] With the continuous development of smart wearable electronic products in recent years, more and more products have built-in various sensory sensors to monitor the position, movement, heart rate, blood pressure and other health information of the human body, such as smart watches with built-in gyroscopes. With the worldwide popularity of such consumer electronic products and the continuous improvement of consumers' requirements for the quality of acoustic and vibration products, more and more test fixtures or systems are applied to the performance testing of various sensitive electronic products, and The performance consistency test of mass products, to ensure that the performance of mass products meet the standards and ...

AI Technical Summary

Problems solved by technology

The invention ensures the consistency of the indoor and outdoor measurement conditions, can equate the indoor test results to the outdoor test results, solves the problems of long time-consuming and low qualified rate of measurement data in passing the noise test process, and improves the repeatability and success of the test rate, but the application does not refer to the test device, especially the test device of irregular products

[0006] The traditional acceleration performance test is carried out for each acceleration sensor one by one through a standard calibrator, and the shape of the acceleration sensor to be calibrated is relatively regular and easy to install. The standard calibrator cannot be used for non-standard sensors and electronic sensors with built-in sensors. In the product; at the same time, the calibrator needs to calibrate the three directions of the three-axis acceleration sensor in sequence, and the three-axis performance test cannot be completed at one time; moreover, the standard calibrator can only calibrate the sensitivity of a certain frequency point, and cannot determine the wide-band Performance and consistency across the range;

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