Cross sensitivity test device and method

Abstract

A cross sensitivity test device and a cross sensitivity test method are provided. The cross sensitivity test device comprises a driving wheel for connection with a power source and for rotation; a first driven wheel and a second driven wheel meshing with the driving wheel respectively and suitable for being driven by the driving wheel to rotate in the same direction at equal speed; a first fixture and a second fixture; a first spindle passed through the first driven wheel, fixedly connected with the first fixture and used for driving the first fixture to rotate with the first driven wheel in the same direction at equal speed; a second spindle passed through the second driven wheel, fixedly connected with the second fixture and used for driving the second fixture to rotate with the second driven wheel in the same direction at equal speed; a link connected at two ends with the first fixture and the second fixture through bearings respectively, wherein points of the upper surface of the link are coplanar and the link is used for fixing an acceleration sensor under test. The cross sensitivity test device and the cross sensitivity test method can provide improved test efficiency and improved accuracy.

Description

technical field [0001] The invention relates to the field of acceleration sensors, in particular to a transverse sensitivity test device and a test method. Background technique [0002] Lateral sensitivity is an important indicator of the acceleration sensor, and its definition is: lateral sensitivity = maximum value of sensitivity in the vertical working direction / sensitivity in the working direction, which represents a single performance of the acceleration sensor. Since acceleration is a vector, vector directionality needs to be considered when measuring acceleration, and the lower the sensitivity in the vertical vector direction, the better. So the lateral sensitivity is an important index to measure the acceleration sensor. [0003] The traditional test method is to apply vibration in the working direction of the vertical acceleration sensor and test the output. Since the working direction of the vertical acceleration sensor is a plane, testing the lateral sensitivity...

AI Technical Summary

Problems solved by technology

Since the working direction of the vertical acceleration sensor is a plane, testing the lateral sensitivity direction needs to test multiple points in this plane to find the maximum sensitivity of the vertical working direction, so the test efficiency is low

Moreover, the simultaneous application of lateral vibration is generally realized by reciprocating bearings. After multiple transmissions, the clearance of the mechanical structure will cause vibrations in other directions, thereby introducing test errors

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