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This paper develops band weighting spectral methods, which are wSAM and wSID, for detection of pesticide residues on vegetables. Since the water content of vegetables has significant impact on the measured spectrum, the propsoed band weighting measures are able to suppress the effect of water content to enhace detectability of of pesticide residue detection. Compared to the traditional band selection...
This paper proposed the adaptive knee voltage detection (KVD) technique to improve the output voltage accuracy of the primary side regulator. Owing to the insertion of the snubber circuit for reducing overshoot voltage, conventional KVD technique fails to get the output voltage information and thus to deteriorate the output voltage accuracy. Analysis of the snubber circuit and the resonance of the...
The non-isolated buck topology for LED driver is proposed to reduce volume and cost without the need of large transformer. Besides, in the entire universal range of AC input voltage, the proposed self-adjusted feed-forward control (SAFFC) technique ensures small variation in the LED current. The auto-tracking off-time control (ATOTC) technique is also adopted to adjust the off time to guarantee the...
Implantable devices like artificial cardiac pacemakers are generally used to control irregular pulses of heart. For 10-year usage, high accuracy supply voltage is essential with the unavoidable aging of the power system to achieve near-natural beat rhythm. A Self-Calibration DC-DC Buck converter (SC-Buck) is proposed to achieve high output voltage accuracy by eliminating offset caused by mismatch...
Vehicular ad-hoc networks (VANETs) are a promising new research area with the potential to revolutionize intelligent transportation systems (ITS) in the near future. Equipping vehicles with computers and wireless communication devices, VANETs have led to new applications including real-time monitoring of traffic, dynamic route scheduling and emergency information dissemination. However, the security...
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