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Digital capacitance corner sensor calibrating system and calibrating method

An angle sensor, digital technology, applied in the direction of using electric/magnetic devices to transmit sensing components, general control systems, control/regulation systems, etc., to achieve the effect of improving quality indicators, good versatility, and satisfactory work efficiency

Inactive Publication Date: 2009-04-22
TIANJIN UNIV
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  • Abstract
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Problems solved by technology

[0003] However, due to the limitations of the current processing technology level and material characteristics, the quality indicators of the proportional capacitive angle sensor designed with the rotating plate suspended in the air, such as basic error, linearity and standard uncertainty, have yet to be improved. In view of this, it is necessary to Study on a fully automatic precision angle calibration system suitable for calibration of proportional digital capacitive angle sensors

Method used

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  • Digital capacitance corner sensor calibrating system and calibrating method
  • Digital capacitance corner sensor calibrating system and calibrating method
  • Digital capacitance corner sensor calibrating system and calibrating method

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Embodiment Construction

[0023] The present invention will be described in further detail below according to the accompanying drawings and embodiments.

[0024] The overall design block diagram of the system is as follows figure 1 As shown, the sensor to be calibrated is the proportional capacitive angle sensor, the standard sensor is the high-precision grating angle sensor, and the power drive unit of the system is the stepping motor. The RS232 communication interface exchanges data with the upper computer; the start and stop of the stepping motor and the forward and reverse rotation are all realized by the upper computer software through the control of the PCI bus interface card as the interface component, and the output switch value is realized, and the upper computer simultaneously completes data acquisition, Data processing, database management, report output and other functions. In terms of structural layout, the stepper motor and the grating angle sensor are packaged in a stainless steel case ...

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Abstract

This invention disclosed a calibration system and method for corner sensor which consists of a machine case, an engine, a grating corner sensor with high precision. The sensor was fixed on the transmission shaft; the shaft can be extended to the outer side of the case so that the sensor can be fixed on it; the upper machine can output control signals to control the engine; the upper machine connects with the sensors via the communication port, sample the angle signal and analyze the data; the formula can be downloaded so that automatic calibration was realized. The efficiency was highly improved by this invention.

Description

technical field [0001] The invention belongs to the technical field of rotation angle sensors, and in particular relates to a calibration system and a calibration method for a digital capacitive angle sensor. Background technique [0002] Because of its simple structure, high measurement accuracy, sensitivity, and suitable for dynamic measurement, the capacitive angle sensor is widely used in the instruments and meters of automobiles, aerospace, and military equipment for angle monitoring. In the past ten years, many scholars at home and abroad have conducted a lot of research on it. The remarkable result is that in 1996, Brasseur et al. proposed a capacitive angle sensor with a new measurement principle, which is called the proportional measurement principle (see G.Brasseur, A Robust Capacitive Angular Position Sensor, in IEEE Conference on Instrumentation and Measurement Technology (IMTC / 96), Brussels, Belgium, June 4-6 1996, pp.1081-1086), this principle has both proporti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D18/00G01D5/24G01B7/30G05B19/04G05B19/042
Inventor 徐英张涛
Owner TIANJIN UNIV
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