A feasible noise estimation algorithm for resource-limited sensor systems

Sauter, Thilo; Nachtnebel, Herbert

doi:10.1109/tim.2003.820491

Cited by 7 publications

(5 citation statements)

References 5 publications

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“…Some of them are ratiometric measurement [2,21], the modulation/demodulation system [19], combined frequency selection [22], the Decentralized Kalman Filtering (DKF) approach [23], and the frequency hopping approach [6,24]. These kinds of solutions usually require a specific circuit design which includes both analog and digital components.…”

Section: Noise Reduction and Frequency Hoppingmentioning

confidence: 99%

“…If the standard deviation is performed on this basis, it consumes a large amount of memory, execution time, and power. Sauter and Nachtnebel [24] modified the standard deviation and developed an easy-to-implement algorithm for a simple controller. Watzenig, Steiner, and Zangl [23] proposed the decentralized Kalman filtering technique by reducing computational complexity for one iteration of the Kalman algorithm.…”

Section: Noise Reduction and Frequency Hoppingmentioning

confidence: 99%

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Development and Experimental Comparison of Low-Cost, Reliable Capacitive Touch Sensing Boards

Akkoç¹,

Sahin

2016

Sensors

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In this study, two types of direct interface capacitive sensors, self- and mutual-capacitance, were developed and compared experimentally. Electromagnetic Compatibility (EMC) tests—International Electrotechnical Commission (IEC) 61000-4-3, IEC 61000-4-4, IEC 61000-4-6—were applied in an accredited laboratory to measure the immunity of the sensors against radiated and conducted interference. The frequency hopping algorithm could be implemented for the mutual-capacitance sensor without using any particular circuit. The effects of EMC disturbance were detected by means of a new noise detection algorithm and when the signal-to-noise ratio (SNR) became lower, the operation frequency of the sensors switched to an undisturbed frequency to ensure safe operation. For this purpose, a new noise detection algorithm was developed and frequency hopping was performed with a standard controller. Both cards were tested under several conditions and their performances compared.

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Section: Noise Reduction and Frequency Hoppingmentioning

confidence: 99%

Section: Noise Reduction and Frequency Hoppingmentioning

confidence: 99%

Development and Experimental Comparison of Low-Cost, Reliable Capacitive Touch Sensing Boards

Akkoç¹,

Sahin

2016

Sensors

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“…Therefore, a narrow band disturber may occasionally corrupt measurement data. However, a plausibility check or a noise estimation can be applied to identify outliers (Sauter, 2003). Furthermore, frequency hopping also spreads the emission power over a larger frequency range and may help to comply with EMC regulations.…”

Section: ) Frequency Hopping Spread Spectrummentioning

confidence: 99%

Versatile programmable integrated interface for robust capacitive sensors

Bretterklieber

Zangl

Holler

et al. 2008

Elektrotech. Inftech.

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Due to the unparalleled simplicity of its sensor elements, its versatility due to a plurality of applicable materials and the availability of small and fairly low cost monolithic sensor interfaces, the acceptance of capacitive technology has constantly increased during the last years. This work addresses the design of a versatile sensor interface for capacitive sensors usable for automotive and industrial measurement problems. The interface is implemented in a 0.25 mm CMOS technology and provides mechanisms in order to cope with front end parasitic effects and external electromagnetic compatibility disturbers. The presented interface is used to evaluate the coupling capacitances of a spatial filtering sensor for flow velocity determination of liquid hydrogen.Vielseitig anwendbare Auswerteeinheit fü r robuste kapazitive Sensoren.Diese Arbeit beschreibt die Entwicklung einer vielseitig anwendbaren Auswerteeinheit fü r kapazitive Sensoren, die in industriellen und automotiven Messaufgaben eingesetzt werden kann. Die Schaltung ist in einer 0,25-m-CMOS-Technologie implementiert. Das Systemkonzept sieht entsprechende Mechanismen vor, um den in rauen Umgebungsbedingungen vorhandenen Parasitä reffekten sowie mö glichen externen EMV-Stö rungen entgegenzuwirken. Die Auswerteeinheit wird in einem Anwendungsbeispiel zur Bestimmung der Durchflussgeschwindigkeit von flü ssigem Wasserstoff mittels Ortsfrequenzfilterung verwendet.Schlü sselwö rter: kapazitive Sensorik; CMOS; elektromagnetische Verträ glichkeit; Durchflussmessung von flü ssigem Wasserstoff

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“…Results obtained with this technology show new horizons in the industrial scenery for the development of innovative applications. The paradigm in that emergent industrial reality needs to be inserted in an ambivalent context where more appropriate strategic could opt for preferential investment in sensor technology or in systems associated to data processing [1].…”

Section: Introductionmentioning

confidence: 99%

Integrated sensors and microsystems for biological and environmental applications

Ramirez-Fernandez

Salcedo

Galeazzo

et al. 2004

phys. stat. sol. (c)

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This work presents a brief review and some significant results about integrated sensors andmicrosystems such as microelectrode array (MEA) for biological cell culture studies and gas sensors based on nanostructured materials as porous silicon (PS) and tin oxide (SnO 2 ). Developed MEA provides electrical access to biological neurons culture for signal recording and stimulation showing that the charge injection limit can be lowered to less than 100 nC/cm 2 . The gas sensors based on PS material are investigated by two approaches: electrical and optical material properties change as function of gas species and concentrations. A model is proposed for PS electrical impedance behavior and the electron transfer mechanism is identified as responsible for the photoluminescence (PL) quenching characterized during essays. Gas sensors based on SnO 2 doped with nickel are studied and a good sensitivity for SO 2 into environment is verified.

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A feasible noise estimation algorithm for resource-limited sensor systems

Cited by 7 publications

References 5 publications

Development and Experimental Comparison of Low-Cost, Reliable Capacitive Touch Sensing Boards

Development and Experimental Comparison of Low-Cost, Reliable Capacitive Touch Sensing Boards

Versatile programmable integrated interface for robust capacitive sensors

Integrated sensors and microsystems for biological and environmental applications

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