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Signal conversion system based on large-scale submicron-level high-precision lvdt displacement sensor

A displacement sensor, sub-micron technology, applied in instruments, measuring devices, electrical devices, etc., can solve the problems affecting the flexibility and inconvenience of measuring equipment, and achieve the effect of high precision and large measuring range

Active Publication Date: 2016-07-06
WUXI MEASURE MACHINE MFR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When performing multi-variety and high-precision measurement, frequent adjustments or gear switching are required, which brings great inconvenience to on-site use and also affects the flexibility of the measurement equipment itself.

Method used

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  • Signal conversion system based on large-scale submicron-level high-precision lvdt displacement sensor

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Embodiment Construction

[0008] Below the present invention will be further described in conjunction with the embodiment in the accompanying drawing:

[0009] Such as figure 1 As shown, the signal converter of the large-scale submicron-level high-precision LVDT displacement sensor of the present invention includes a large-scale LVDT displacement sensor 1, a submicron-level high-precision signal converter 13 and a PC 7. Described submicron level high-precision signal converter 13 is made up of excitation signal generator 2, AC amplifier 12, synchronous sampling pulse generator 3, synchronous sampler 11, active filter 10, high-gain DC amplifier 4, A / It consists of D converter 8, single chip microcomputer 5, and 232 serial interface 6. The high stability clock output end of described single-chip microcomputer 5 is connected to the input end of excitation signal generator 2, and the excitation signal output end of described excitation signal generator 2 is connected to the excitation signal input end of...

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Abstract

The invention relates to a signal converter of a large-scale submicron-level high-precision LVDT displacement sensor, including an LVDT displacement sensor, a sub-micron-level high-precision signal converter and a PC; Device, active filter, high-gain DC amplifier, A / D converter, single-chip microcomputer are connected; The single-chip microcomputer is connected with the excitation signal generator; The excitation signal generator is connected with the synchronous sampling pulse generator, and the synchronous sampling pulse generator is connected with the The synchronous sampler is connected; the high-gain DC amplifier is connected to the analog output interface; the single-chip microcomputer is connected to the 232 serial interface; the PC communicates with the single-chip microcomputer in real time through the 232 serial interface. The invention has a large measurement range and high precision, the measurement range is ±200um, and the accuracy is ±0.2um; the measurement range is ±500um, and the accuracy is ±0.5um; the maximum range can reach ±3000um, and the accuracy is ±2um.

Description

technical field [0001] The invention relates to a signal converter for an inductance displacement sensor, in particular to a signal converter for a large-scale submicron-level high-precision LVDT displacement sensor. Background technique [0002] At present, the signal converter of the LVDT full-bridge inductive displacement sensor used in China has low measurement accuracy when it has a large range. For example, when the measurement range is ±500um, the accuracy is 10um; when the measurement range is ±50um, the accuracy is 1um. When performing multi-variety and high-precision measurement, frequent adjustments or gear switching are required, which brings great inconvenience to on-site use and also affects the flexibility of the measurement equipment itself. Contents of the invention [0003] The object of the present invention is to overcome above-mentioned deficiencies, provide a kind of signal converter of LVDT displacement sensor with large range and submicron level and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B7/02
Inventor 蒋文郁姜北锋
Owner WUXI MEASURE MACHINE MFR