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LVDT/RVDT simulation module output circuit

A technology of output circuit and simulation circuit, applied in the direction of using electrical devices, using electromagnetic means, instruments, etc., can solve the problems of low precision, high price, poor adaptability of simulation equipment, etc., and achieve the effect of simple implementation and high control precision

Pending Publication Date: 2022-05-10
西安凯锐测控科技有限公司
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AI Technical Summary

Problems solved by technology

[0002] LVDT / RVDT sensors are widely used in the aviation field. The LVDT / RVDT simulation module is to simulate the output of LVDT / RVDT sensor signals. This technology is relatively mature abroad, and there are corresponding products, but the price is relatively expensive.
At present, this domestic technology is immature in China, with low precision, poor adaptability of simulation equipment, and constant use.

Method used

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  • LVDT/RVDT simulation module output circuit
  • LVDT/RVDT simulation module output circuit

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Embodiment Construction

[0013] In order to enable those skilled in the art to better understand that the technical solutions of the present invention can be implemented, the present invention will be further described below in conjunction with specific examples, but the given examples are only used as illustrations of the present invention, not as limitations of the present invention.

[0014] Such as figure 1 Shown is the specific implementation schematic diagram of the excitation voltage acquisition circuit, including the excitation voltage acquisition circuit, LVDT / RVDT simulation circuit, the excitation voltage acquisition circuit is equipped with an instrument amplifier, RC filter circuit, AD637 voltage effective value conversion chip, 16-bit AD conversion chip, the input excitation signal is conditioned by a high-precision, high-mode rejection ratio instrumentation amplifier to improve the input impedance, and the front end of the instrumentation amplifier is equipped with an RC filter circuit t...

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Abstract

The invention relates to an LVDT / RVDT simulation module output circuit, which comprises an excitation voltage acquisition circuit and an LVDT / RVDT simulation circuit, an external excitation signal of the excitation voltage acquisition circuit is used as a reference source of a DA conversion chip, a digital end of the DA conversion chip outputs a fixed voltage value, and the reference source is an alternating current excitation signal, so that the voltage value of the LVDT / RVDT simulation module output circuit is improved. Therefore, a DA actual output signal and an input excitation voltage signal have the same frequency and the same direction, the amplitude of an LVDT / RVDT simulation signal can be changed by changing a DA output voltage value, and simulation of the position of the sensor is achieved. The circuit is easy to implement, high in control precision and capable of flexibly controlling continuous scanning output of displacement values.

Description

technical field [0001] The invention belongs to the technical field of LVDT / RVDT sensors used in the aviation field, and in particular relates to an output circuit of an LVDT / RVDT simulation module. Background technique [0002] LVDT / RVDT sensors are widely used in the aviation field. The LVDT / RVDT simulation module is to simulate the output of LVDT / RVDT sensor signals. This technology is relatively mature abroad, and there are corresponding products, but the price is relatively expensive. At present, this domestic technology is immature in China, with low precision, poor adaptability of simulation equipment, and invariable use. Contents of the invention [0003] The object of the present invention is to solve the above problems and provide an output circuit of an analog LVDT / RVDT sensor. The circuit is simple to implement, has high control precision, and can flexibly control the continuous scanning output of the displacement value. [0004] In order to achieve the above ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/02
CPCG01B7/02
Inventor 时剑李阳段宇王夏威
Owner 西安凯锐测控科技有限公司
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