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Cooperative measurement device and method for low frequency inertial sensor calibration system

An inertial sensor and calibration system technology, applied in the field of sensor calibration equipment, can solve the problems of narrow operating frequency range of the calibration system, easy to cause errors, and inability to meet the growing number of low-frequency inertial sensor calibrations.

Active Publication Date: 2022-06-28
嘉兴亿恒测试技术有限公司
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Problems solved by technology

Using one sensor alone leads to a narrow operating frequency range of the calibration system, which cannot meet the growing demand for calibration of low-frequency inertial sensors and is prone to errors

Method used

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  • Cooperative measurement device and method for low frequency inertial sensor calibration system
  • Cooperative measurement device and method for low frequency inertial sensor calibration system
  • Cooperative measurement device and method for low frequency inertial sensor calibration system

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Embodiment Construction

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0034] like figure 1 The embodiment shown is a collaborative measurement device for a low-frequency inertial sensor calibration system, including an acceleration signal input circuit 1, a displacement signal input circuit 2, an FPGA module 3, a processor DSP module 4, a control signal output circuit 5, and an ARM embedded circuit. Module 6 and PC 7; FPGA module is electrically connected with acceleration signal input circuit, displacement signal input circuit, control signal output circuit and processor DSP module respectively, ARM embedded module is electrically connected with processor DSP module and PC respectively.

[0035] The acceleration signal input circuit includes an acceleration sensor, a protection filter circuit, a conditioning circuit and an ADC module electrically connected in sequence; the ADC module is electrically connected with...

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Abstract

The invention discloses a cooperative measurement device and method of a low-frequency inertial sensor calibration system, comprising an acceleration signal input circuit, a displacement signal input circuit, an FPGA module, a processor DSP module, a control signal output circuit, an ARM embedded module and a PC; The FPGA module is electrically connected to the acceleration signal input circuit, the displacement signal input circuit, the control signal output circuit and the processor DSP module, and the ARM embedded module is respectively connected to the processor DSP module and the PC electromechanically. The invention has the characteristics of high measurement precision, small error and wide calibration frequency range.

Description

technical field [0001] The invention relates to the technical field of sensor calibration equipment, in particular to a collaborative measurement device and method for a low-frequency inertial sensor calibration system with high measurement accuracy, small error and wide calibration frequency range. Background technique [0002] The low-frequency inertial sensor calibration system mainly includes controller, power amplifier, vibration table, sensor, fixture, etc., among which the controller has a core position. In the low-frequency inertial sensor calibration system, the most common ways to collect vibration signals are displacement sensors, velocity sensors and acceleration sensors. Theoretically, as long as one type of sensor is used to measure the corresponding motion, the other two motions can be obtained according to the differential or integral relationship between vibration displacement, velocity and acceleration. However, in actual measurement work, the errors cause...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C25/00
Inventor 贺惠农黄连生邱宏亮李雅发鲍菲琴
Owner 嘉兴亿恒测试技术有限公司
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