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Frequency distortion correction-type digital strain-type torque sensor based on signal conversion

A torque sensor and frequency distortion technology, applied in the field of sensors, can solve the problems of analog signal distortion and low signal conversion efficiency, and achieve the effects of convenient calibration, high signal conversion efficiency, improved anti-interference ability and transmission distance

Inactive Publication Date: 2015-12-02
CHENGDU CHENGBANG POWER TEST INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the defect that the analog signal of the existing strain gauge torque sensor is easily distorted after being processed and the efficiency of signal conversion is low, and to provide a frequency distortion correction digital strain gauge torque sensor based on signal transformation

Method used

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  • Frequency distortion correction-type digital strain-type torque sensor based on signal conversion
  • Frequency distortion correction-type digital strain-type torque sensor based on signal conversion
  • Frequency distortion correction-type digital strain-type torque sensor based on signal conversion

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Embodiment

[0023] Such as figure 1 As shown, the digital strain gauge torque sensor based on the frequency distortion correction circuit of the present invention is composed of a gear plate U, a photoelectric switch S, a stator system, a resolver T1, a resolver T2, and a rotor system. The toothed disk U is fixed on the rotor of the sensor, and one end of the photoelectric switch S is connected with the toothed disk U, and the other end is connected with the stator system. At the same time, the primary side of the resolver T1 is connected to the stator system, and its secondary side is connected to the rotor system. The primary side of the resolver T2 is connected to the rotor system, and its secondary side is connected to the stator system. The photoelectric switch S cooperates with the gear plate U to detect the speed of the rotor rotation, and outputs a corresponding frequency pulse signal to the stator system.

[0024] In order to better process the frequency pulse signal sent by the...

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Abstract

The invention discloses a frequency distortion correction-type digital strain-type torque sensor based on signal conversion, which is characterized by comprising a dentate disc U, a photoelectric switch S, a stator system, a rotating transformer T1, a rotating transformer T2 and a rotor system, wherein the stator system comprises a DC / DC unit, a power amplifier P1 connected with the DC / DC unit, an ARM microcontroller connected with the power amplifier P1, an RS485 communication interface and a signal conversion circuit connected with the ARM microcontroller respectively, and a frequency distortion correction circuit and a rotation speed signal conditioning unit connected with the signal conversion circuit respectively. The signal conversion efficiency is high, and the signal processing time can be saved by about 20% than that of the traditional strain-type torque sensor. Distorted frequency signals in the treatment process can be corrected, and precision of the outputted signals can be ensured.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to a frequency distortion correction digital strain torque sensor based on signal conversion. Background technique [0002] In the existing strain gauge torque sensor technology, an analog circuit is usually used to process the electrical signal output by the strain gauge, and convert it into a proportional linear analog output signal, such as voltage, current or frequency pulse signal. However, the analog signal tends to be distorted after being processed, and the signal conversion efficiency is low, thereby affecting the continuity of the signal output. Contents of the invention [0003] The purpose of the present invention is to overcome the defect that the analog signal of the existing strain gauge torque sensor is easily distorted after processing and the signal conversion efficiency is low, and to provide a frequency distortion correction digital strain gauge torque sensor b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L3/00G01L25/00
Inventor 程社林刘陈卢中永文学
Owner CHENGDU CHENGBANG POWER TEST INSTR
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