Browsing by Author "Cheng, S. H."

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A FLEXIBLE, NON-INTRUSIVE POWER SENSOR TAG FOR THE ELECTRICITY MONITORING OF TWO-WIRE HOUSEHOLD APPLIANCES
(2012)
Chen, Y. C.
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Hsu, W. H.
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Cheng, S. H.
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Cheng, Y. T.
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交大名義發表
This paper presents a flexible non-intrusive power sensor tag with good proximity for accurate electric current and voltage sensing on a typical SPT-2 18AWG zip-cord power line of household appliances. The current and voltage sensors are simultaneously fabricated on a 100 mu m-thick flexible PET substrate. For the design of a 50-turns coil combing with two sensing electrodes in an area of 1.3x1cm(2), the sensor tag exhibits a sensitivity of 31.1 mu V/A and 98.9mV/115V for detecting 60Hz electric current and voltage, respectively.
Noninvasive current sensor for household appliances and compensation for installation variation
(2013-04-15)
Cheng, S. H.
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Lin, S. F.
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電控工程研究所
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Institute of Electrical and Control Engineering
The lack of natural resources requires a more efficient use of energy. This study proposes a noninvasive coil current sensor for energy efficiency in the home. The proposed sensor is used to detect current in two-wire power cords used by household appliances. Moreover, the proposed sensor has no contact with the conductors in the power cords, ensuring a safe measurement process. Mathematical models and experiments are conducted to verify the characteristics and performance of the proposed device. In addition, this study develops relevant algorithms and the method for reducing installation variation. Using the developed algorithms, the measurement errors caused by an installation gap were reduced to less than 3%. The information provided by the current sensor supports home energy management systems and encourages energy-saving behaviors for every household member, resulting in an increasingly efficient energy usage. (C) 2013 Elsevier B.V. All rights reserved.