Research and development of inclinometer based on magnetoresistive and tilt sensors

Mei Yuan; Shaopeng Dong

doi:10.1117/12.717844

28 October 2006 Research and development of inclinometer based on magnetoresistive and tilt sensors

Mei Yuan, Shaopeng Dong

Proceedings Volume 6358, Sixth International Symposium on Instrumentation and Control Technology: Sensors, Automatic Measurement, Control, and Computer Simulation; 63581D (2006) https://doi.org/10.1117/12.717844
Event: Sixth International Symposium on Instrumentation and Control Technology, 2006, Beijing, China

Abstract

The growing requirement on a high precision, small volume and low cost inclinometer in the field of coal-bed logging needs further research on the inclinometer. This paper introduces the inclinometer based on the theory of gravitational field measurement and geomagnetic field measurement, and then brings forward a new scheme based on tilt sensor and magnetoresistive sensor. In this paper, the formulas for vertex angle and azimuth angle are deduced; an inclinometer prototype based on the two sensors is designed. Furthermore, the sensor calibration is completed; the characteristic equations of the sensors are built; and the real time measurement for the vertex angle and azimuth angle is implemented. In order to compensate for the rotation error of the probe, a compensation method which using the average value of the positive order and negative order sampled data is described; in order to eliminate the dithering problem of the measure data, a limit range filtering algorithm is applied. The specifications of the prototype described in the article are: an external diameter of 40mm, a vertex angle precision of up to 0.1 degree and an azimuth angle precision of up to 2.5 degree. The performance of the prototype is guaranteed in practical engineering application.

Citation Download Citation

Mei Yuan and Shaopeng Dong "Research and development of inclinometer based on magnetoresistive and tilt sensors", Proc. SPIE 6358, Sixth International Symposium on Instrumentation and Control Technology: Sensors, Automatic Measurement, Control, and Computer Simulation, 63581D (28 October 2006); https://doi.org/10.1117/12.717844

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KEYWORDS

Sensors

Magnetic sensors

Calibration

Magnetism

Prototyping

Microcontrollers

Sensor calibration

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