Test method and device for accelerometer resolution

Abstract

The invention relates to an accelerometer resolution testing method and device, and the method comprises the steps: horizontally installing an accelerometer on a rotating table surface of a driven centrifugal machine of two centrifugal machines, wherein the centrifugal acceleration, which is generated on the driven centrifugal machine when the rotating table surface of the driving centrifugal machine of the two centrifugal machines rotates, has a component on the accelerometer, and the accelerometer outputs corresponding data under the action of the component; selecting a target centrifugal acceleration value, generated by the driving centrifugal machine on the driven centrifugal machine, a target sensitive axis angle value of the accelerometer and a target sensitive axis angle increment according to a target acceleration increment of the accelerometer, obtaining different output data of the accelerometer, and judging whether the resolution of the accelerometer reaches the standard or not according to the ratio of the output difference to the ideal output value of the accelerometer at the target acceleration increment. According to the scheme of the invention, the method can achieve the testing of the resolution of the accelerometer through two centrifugal machines, does not need gravitational field 1g overturn test equipment and other precious test equipment, and reduces the testing hardware cost.

Description

technical field [0001] The invention relates to the technical field of accelerometer testing, in particular to a method and device for testing the resolution of an accelerometer. Background technique [0002] Accelerometers are widely used in vibration detection, motion recognition, status recording, and automotive airbags. In the development, production and use of the accelerometer, the performance of the accelerometer needs to be calibrated. [0003] The performance indicators of the accelerometer within ±1g can be tested by using the gravity field 1g rollover test, but the measurement range is limited within ±1g. Since the magnitude and direction of the gravitational acceleration can be accurately known, the resolution of the accelerometer is usually tested by a 1g tumbling test in the gravitational field. [0004] However, for accelerometers with a measuring range of more than 1g, the test calibration of its resolution needs to be completed with other equipment, such a...

AI Technical Summary

Problems solved by technology

[0005] Based on this, it is necessary to provide a test method and device for the resolution of the accelerometer for the problem of high hardware cost required for the test calibration of the resolution of the traditional range greater than 1g accelerometer

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