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Signal transmitting circuit of magnetostrictive displacement sensor

A technology of displacement sensor and signal transmission, which is applied in the direction of instruments, electric devices, electromagnetic means, etc., and can solve the problems of rare application research

Inactive Publication Date: 2013-08-07
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Although the research on magnetostrictive materials in my country started late, some achievements have been made, but most of them are about the properties of the materials themselves, and the applied research is rare. For example, the State Key Laboratory of New Metal Materials of Beijing University of Science and Technology adopts a A new manufacturing technology, the magnetostriction coefficient of the manufactured magnetostrictive material reaches 200-1550ppm, the repeatability and consistency are high, the process is easy to control, the yield is high, and the performance is better than that of foreign products of the same size, and it has been declared National Patent

Method used

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  • Signal transmitting circuit of magnetostrictive displacement sensor
  • Signal transmitting circuit of magnetostrictive displacement sensor
  • Signal transmitting circuit of magnetostrictive displacement sensor

Examples

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Embodiment 1

[0033] The circuit uses a crystal oscillator and SN74LS04 chip to form an oscillating signal source to generate an oscillating signal; the signal is divided by two SN74LS393 counter circuits as a frequency divider, and a switch S8 is left to select and set the output frequency. According to the requirements, the SN54121 monostable multivibrator is used as a monostable trigger in the design, so that the pulse width of the obtained excitation pulse signal can reach the ns level, and the pulse width can be adjusted according to the needs, and the waveform can be quickly flipped and stabilized. Effect. This time the pulse width of the excitation pulse is set to 30us.

[0034] After the excitation pulse signal is input, a switching circuit is composed of an NPN, a PNP transistor and a MOS transistor that can drive a large current to control the charging and discharging of the polystyrene capacitor. The waveform is shown in the figure below. Polystyrene capacitors have the char...

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PUM

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Abstract

The invention discloses a signal transmitting circuit of a magnetostrictive displacement sensor. The signal transmitting circuit of the magnetostrictive displacement sensor comprises an exciting pulse transmitting module and a pulse current transmitting module; the exciting pulse transmitting module and the pulse current transmitting module are connected with each other; and the exciting pulse transmitting module transmits the generated exciting pulse to the pulse current transmitting module, the pulse current transmitting module converts the exciting pulse into pulse current and transmitting the pulse current to an interface circuit, so that a current pulse signal which is matched with a Fe83Ga17 material is generated.

Description

technical field [0001] The invention relates to a signal transmitting circuit of a magnetostrictive displacement sensor. Background technique [0002] Although the research on magnetostrictive materials in my country started late, some achievements have been made, but most of them are about the properties of the materials themselves, and the applied research is rare. For example, the State Key Laboratory of New Metal Materials of Beijing University of Science and Technology adopts a A new manufacturing technology, the magnetostriction coefficient of the manufactured magnetostrictive material reaches 200-1550ppm, the repeatability and consistency are high, the process is easy to control, the yield is high, and the performance is better than that of foreign products of the same size, and it has been declared National Patent. In terms of using the magnetostrictive effect as a sensitive element for displacement detection, there are few domestic research reports, especially the re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/02
Inventor 周新志冯希辰余超
Owner SICHUAN UNIV
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