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Vibration rectification error test acquisition circuit and acquisition system provided with vibration rectification error test acquisition circuit

A technology for collecting circuits and errors, applied in the field of accelerometer testing, can solve problems such as the difference in the calibration level of the vibration rectification error coefficient, and achieve the effect of reducing the vibration rectification error coefficient and improving the calibration accuracy

Active Publication Date: 2019-04-23
航天科工惯性技术有限公司
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  • Abstract
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Problems solved by technology

[0004] The invention provides a vibration rectification error test acquisition circuit and an acquisition system with it, which can solve the technical problem of the calibration level difference of the vibration rectification error coefficient of the accelerometer in the prior art

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  • Vibration rectification error test acquisition circuit and acquisition system provided with vibration rectification error test acquisition circuit

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[0026] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, for purposes of explanation and not limitation, specific details are set forth in order to provide a thorough understanding of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details.

[0027] It should be noted here that, in order to avoid obscuring the present invention due to unnecessary details, only the device structure and / or processing steps closely related to the solution according to the present invention are shown in the drawings, and the steps related to the present invention are omitted. Invent other details that don't really matter.

[0028] Such as Figure 1 to Figure 7 As shown, a vibration rectification error test acquisition circuit is provided according to a specific embodiment ...

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Abstract

The invention provides a vibration rectification error test acquisition circuit and an acquisition system provided with the vibration rectification error test acquisition circuit. The vibration rectification error test acquisition circuit comprises an accelerometer interface unit used for connecting an accelerometer, an RC filter unit which is connected with the accelerometer interface unit and used for filter data output by the accelerometer and a signal output unit connected with the RC filter unit and used for acquiring the data output by the accelerometer. According to the vibration rectification error test acquisition circuit and the acquisition system provided with the vibration rectification error test acquisition circuit, the technical problem of the calibration level error of an accelerometer vibration rectification error coefficient in the prior art is solved.

Description

technical field [0001] The invention relates to the technical field of accelerometer testing, in particular to a vibration rectification error test acquisition circuit and an acquisition system with the same. Background technique [0002] As an important instrument for inertial measurement, quartz flexible accelerometer (referred to as accelerometer) has the advantages of high precision, high long-term repeatability and suitable for acceleration measurement. It has been widely used in many fields such as aerospace, aviation, navigation and petroleum. However, environmental factors such as vibration will cause changes in the parameters of the accelerometer. Therefore, in order to facilitate the selection of accelerometers with excellent adaptability to the vibration environment, it is necessary to screen the accelerometers through vibration tests. [0003] At present, the defect of accelerometer vibration rectification error test is that due to nonlinear factors such as accel...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P21/00
CPCG01P21/00
Inventor 于湘涛周峰韩旭张菁华吴楠魏超张吉付秀娟张宁任敬坤
Owner 航天科工惯性技术有限公司
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