A Robust Inclinometer System With Accurate Calibration of Tilt and Azimuth Angles

Wu, Yang; Fang, Bin; Tang, Yuan Yan; Qian, Jiang; Qin, Xudong; Yao, Wenhua

doi:10.1109/jsen.2013.2252891

Cited by 24 publications

(17 citation statements)

References 14 publications

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“…It means that the normalized positive and negative parts are symmetrical at room temperature, so the first point ( 1 , 1 ) in (5) can be obtained by 1 = ( 1 max + 1 min )/2, where 1 max and 1 min are the maximum and minimum at room temperature 1 , respectively. In this experiment, the first point is (19,16386) for sensor #1 and (21, 16373) for sensor #2.…”

Section: Experimental Results In Sensorsmentioning

confidence: 99%

“…Usually, the misalignment should be calibrated to obtain a satisfying accuracy. Since in this paper we do not focus on the misalignment calibration algorithm, for simplicity, we use the model in [19] to obtain the final inclination. After the temperature compensation procedure, we denote the nor-…”

Section: Experimental Validation In Tilt Sensingmentioning

confidence: 99%

“…Inclination angles (axes) change as the temperature ( -axes) rises from the room temperature to the upper limit temperature of 150 ∘ C. Similarly, "classical" and "proposed" represent the results obtained by using classical normalized method (see (7)) and ours (see (8)), respectively. To distinguish the influence brought by temperature and other factors (e.g., scale factor, bias, and misalignment) in tilt sensing, both "classical" and "proposed" methods calibrate all parameters by the model in [19] except the temperature compensation coefficients, so that the differences of evaluation results are only caused by different temperature compensation methods. Typically the temperature drift error of the inclination calculated by our method is only about 0.1 ∘ , which is more robust than the drift error 0.4 ∘ computed by using the classical temperature method.…”

Section: Experimental Validation In Tilt Sensingmentioning

confidence: 99%

“…The roll angles are about 30 ∘ , 180 ∘ , and 330 ∘ and the inclination is close to 90 ∘ The comparison of the normalized sensor outputs between the proposed and the classical temperature compensation methods. Sensor model for a cylindrical inclinometer[19].…”

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confidence: 99%

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A Temperature Compensation Model for Low Cost Quartz Accelerometers and Its Application in Tilt Sensing

Fang

Tang

et al. 2016

Mathematical Problems in Engineering

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Although the quartz accelerometer has made great advances, the performance, in some specific applications such as tilt sensing, needs to be well compensated in high temperature environment. Based on the high temperature testing of low cost quartz accelerometers, we found that the normalized positive and negative parts are asymmetrical at high temperature and the temperature curve of zero sensor output is related to the roll angle of the sensor. Traditional temperature compensation method only considers the temperature factor and ignores the roll sensitivity, which leads to deteriorated accuracy. To solve this problem, this paper proposes a novel and simple mathematical model to obtain a more accurate expression of zero sensor output, which makes the sensor output more robust at high temperature. Experimental results on two low cost quartz accelerometers demonstrate that the proposed model is feasible and effective, which could reduce the temperature drift error of the sensor output typically from 0.01 g to 0.001 g. Furthermore, we introduce the compensated sensors in the three-axis inclinometer system for tilt sensing, and the evaluation results show that the temperature drift error of the inclination in the range (20∘C,150∘C) is reduced typically from0.4∘to0.1∘compared to the traditional method.

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Section: Experimental Results In Sensorsmentioning

confidence: 99%

Section: Experimental Validation In Tilt Sensingmentioning

confidence: 99%

Section: Experimental Validation In Tilt Sensingmentioning

confidence: 99%

mentioning

confidence: 99%

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A Temperature Compensation Model for Low Cost Quartz Accelerometers and Its Application in Tilt Sensing

Fang

Tang

et al. 2016

Mathematical Problems in Engineering

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“…It should be mentioned that calibration can be also realized by setting the accelerometer in 6 characteristic positions, where each sensitive axis once senses acceleration of -1g and then of 1g [16], or even implementing an idea of autocalibration, when the accelerometer is to be oriented in few unknown arbitrary positions, and its parameters are determined according to various algorithms, proposed e.g. in [17]- [19].…”

Section: Fig 3 Offset and Scale Factor Of A Typical Mems Acceleromementioning

confidence: 99%

Novel algorithm for tilt measurements using MEMS accelerometers

Łuczak

2018

MATEC Web Conf.

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A novel algorithm for determining pitch and roll under static or quasi-static conditions is presented. It is based on application of a triaxial micromachined accelerometer for the necessary measurements. In order to obtain a possibly high accuracy, a simple data fusion is applied. Depending on the nominal value of pitch/roll, appropriate mathematical formula is selected. Additionally, the algorithm makes it possible to check if the operating conditions are dynamic, as indications of accelerometers are then not reliable. Implementation of the algorithm makes it possible to determine pitch and roll with accuracy of ca. 0.2° over 360° or better.

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Development and application of a wireless MEMS-based borehole inclinometer for automated measurement of ground movement

Kim²,

Kim

et al. 2018

Automation in Construction

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A Robust Inclinometer System With Accurate Calibration of Tilt and Azimuth Angles

Cited by 24 publications

References 14 publications

A Temperature Compensation Model for Low Cost Quartz Accelerometers and Its Application in Tilt Sensing

A Temperature Compensation Model for Low Cost Quartz Accelerometers and Its Application in Tilt Sensing

Novel algorithm for tilt measurements using MEMS accelerometers

Development and application of a wireless MEMS-based borehole inclinometer for automated measurement of ground movement

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