A Smart Capacitive Angle Sensor

Sauter, Thilo; Nachtnebel, Herbert; Kero, Nikolaus

doi:10.1109/tii.2005.858425

Cited by 16 publications

(4 citation statements)

References 9 publications

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“…The availability of computing resources permits advanced functions that go beyond the mere processing of sensing data and ease system integration, scalability, or simply adaptation to a more versatile range of applications [2]. Other features typically associated with smartness are increased robustness and fault-tolerance [3], facilitated also by system designs employing active or closed-loop measurement principles, which is hardly possible without data processing algorithms implemented in software [4].…”

Section: Guest Editorial Special Section On Intelligent Sensingmentioning

confidence: 99%

Guest Editorial Special Section on Intelligent Sensing Fundamentals and Applications

Zhu

Sauter

Liu

2013

IEEE Trans. Ind. Inf.

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Section: Guest Editorial Special Section On Intelligent Sensingmentioning

confidence: 99%

Guest Editorial Special Section on Intelligent Sensing Fundamentals and Applications

Zhu

Sauter

Liu

2013

IEEE Trans. Ind. Inf.

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“…However, we find that translational motion seriously interferes with the output value of the sensor. One existing dip sensor is based on the principle of capacitance [1]. After a thorough investigation of all major nonlinear effects, researchers designed an accurate system-level model of the sensor, which is capable of handling signal offset and amplitude variations.…”

Section: Introductionmentioning

confidence: 99%

Design and Implementation of a Novel Tilt Sensor Based on the Principle of Variable Reluctance

Zhang

Song

Zhao

et al. 2019

Sensors

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Tilt angle measurement in dynamic systems is problematic because the rotation of the measured platform is coupled with translation. Therefore, when some sensors are applied in dynamic systems, their output signals are often submerged in the noise signals generated by translation. To enhance the ability of tilt sensors to resist translational noise, a dynamic tilt sensor is proposed based on the principle of variable reluctance from the perspective of sensor structure. The eccentric structure of the sensor constructed with a shell, liquid, and internal damping plate was designed according to the principles of mechanics. The characteristic of translational acceleration restraint determined by the sensor structure was established theoretically. In addition, the magnetic circuit of the sensor was analyzed to illustrate the sensor’s working principles. A Clapp oscillator circuit was designed to convert mechanical motion into a measureable electrical signal. A method to determine the sensor’s direction of rotation is proposed. A waveform conversion circuit was designed to convert the sine wave output of the Clapp oscillator to a square wave, and a square-wave frequency measurement circuit was designed based on the C8051 micro-control unit. A translation–rotation experimental hardware platform was constructed. The data acquisition program was designed on a PC platform, and the translation–rotation experiments were conducted with an MTi attitude measurement unit as a reference. The validity of the tilt angle measurements and the effect of the translational acceleration restraint of the sensor were verified by the experimental data. The theoretical results obtained were consistent with the experimental data, verifying the validity of the theoretical analysis and experimental devices employed. A measurement range of −180 to 180° was achieved.

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“…In an automobile, angle sensing is required for implementing electronic control of (i) steering, (ii) throttle, (iii) active suspension and (iv) brake wear assessment. Angle sensors that utilise diverse mechanisms for sensing are in vogue [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. A simple resistive potentiometer can be used as an angle sensor, but such potentiometric sensors suffer from problems because of friction and the resulting wear and tear [4].…”

Section: Introductionmentioning

confidence: 99%

“…Angle sensors that utilise optical sensing methods provide contact‐free operation, but are not suited for harsh environments [5, 6]. Capacitance‐based angle sensors provide contactless sensing with good performance, but use complex electronics and also require special care to negate the influence of parasitic capacitance effects [7, 8]. The principles of accelerometer and gyroscope are combined to realise angle measurement schemes, which are suited for joint‐angle estimation [9].…”

Section: Introductionmentioning

confidence: 99%

Analysis of a tunnelling magneto‐resistance‐based angle transducer

Sreekantan¹,

George²,

Kumar³

2014

IET Circuits, Devices & Systems

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An angle transducer that utilises tunnelling magneto-resistance (TMR) type sensor elements is presented and its performance is analysed. The signal conditioning circuit of the proposed angle transducer translates the sine-cosine outputs of a TMR sensor integrated circuit into an output that varies linearly with the sensing angle. An added advantage of the proposed scheme is that the output of the angle sensor is dictated, apart from the angle being sensed, only by a dc reference voltage. Thus good performance characteristics can be obtained from the proposed transducer very easily by using a precision dc voltage as the reference. Possible sources of errors that may affect the performance of the transducer are identified and their effects are quantified. Simulation studies conducted using SPICE demonstrates the ability of the scheme in providing a linear output across the entire 360°range. Experimental results obtained from a prototype unit built and tested, portray a worst-case error of < ±1.05%.

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A Smart Capacitive Angle Sensor

Cited by 16 publications

References 9 publications

Guest Editorial Special Section on Intelligent Sensing Fundamentals and Applications

Guest Editorial Special Section on Intelligent Sensing Fundamentals and Applications

Design and Implementation of a Novel Tilt Sensor Based on the Principle of Variable Reluctance

Analysis of a tunnelling magneto‐resistance‐based angle transducer

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