An acceleration sensor-based accelerometer calibration device and method

Abstract

The invention discloses an acceleration sensor-based acceleration recorder calibration device. The device comprises a rotation device and an electric control device; the rotation device is composed of a rotation arm, a rotation frame, a base and the like; the electric control device is composed of a central control module, a speed adjustment module, a motor driving module, an encoder, a speed measurement module, an LCD display module, a handle and the like; the handle outputs high-level pulses to the first input end of the central control module; the first output end of the central control module is connected with the LCD display module; the second output end of the central controller is connected with the input end of the speed adjustment module; the output end of the speed adjustment module is connected with the input end of the motor driving module; the output end of the motor driving module is connected with the input end of a high-speed motor; the output end of the encoder is connected with the input end of the speed measurement module; and the output speed of the speed measurement module is connected with the second input end of the center control module. According to the acceleration sensor-based acceleration recorder calibration device of the invention, the rotation speed of the high-speed motor and the length of the rotation arm are increased, so that large-measurement range acceleration linear calibration can be realized.

Description

technical field [0001] The invention belongs to the technical field of electronic measurement, in particular to an acceleration recorder calibration device and method based on an acceleration sensor. Background technique [0002] As high-tech technology plays an increasingly important role in modern warfare, the development of missiles has also developed from a unit system to a multi-system system. During the design process of missile and even shell weapon systems, a lot of testing work is required, especially the real-time recording of the working state parameters of each part in the system development and flight test, so as to analyze and improve the design. The accelerometer also came into being at the historic moment. [0003] The accelerometer is used for real-time conditioning, collection, processing and recording of the acceleration data on the projectile before and after launch, flight and landing penetration or part of the process, and is recovered by corresponding...

AI Technical Summary

Problems solved by technology

[0005] The Chinese patent No. 201410108757.2 introduces a calibration method for a three-axis acceleration sensor, mainly through software data processing, to calibrate the static error value, and the linear error calibration effect within the range of the acceleration sensor is not obvious

The Chinese patent No. 201410797068.7 introduces a calibration and test method for simultaneous testing of three axes of an acceleration sensor. The static error calibration of the acceleration data of the X-axis, Y-axis and Z-axis is performed through a special fixed fixture, and a large number of process linearity calibration

The Chinese patent No. 201520607608.0 introduces a sensor calibration vibration platform and a sensor sensitivity calibration system. The vibration table is mainly used to generate acceleration, and the standard acceleration sensor is used to calibrate the acceleration sensor to be measured. The calibration performance is easily affected by the standard acceleration sensor.

[0006] It can be seen from the above that the above-mentioned patents are mainly aimed at the calibration of acceleration sensors, and they are all small-range acceleration calibrations. There are defects such as unstable calibration performance, inability to meet large-range accurate calibration, and narrow application fields.

[0007] In short, the existing calibration devices based on acceleration sensors cannot meet the calibration requirements of accelerometers

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