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Utilizing the technology of image recognition, a design scheme of monitoring device of risks caused by external damages on overhead transmission lines was presented based on embedded DSP platform. Based on binocular stereo vision, the algorithm for detecting intrusions in the overhead transmission line corridor was investigated. Applying binocular cameras to obtain scenes of high-voltage overhead...
In this paper, the transient over-voltage (TOV) online monitoring technology based on the 500kV capacitive voltage transformer (CVT) is introduced, including an voltage divider formed by the 500kV CVTs within an unit C3 (the low-voltage capacitor) and the development of an intelligent TOV monitoring system. Based on this monitoring system, some recorded typical TOV waveshapes are displayed and analyzed,...
A new method for transient overvoltage (TOV) measurements in 500kV power system using capacitor voltage transformers (CVTs) is introduced in this paper. It is realized with a voltage sensor installed within the CVT as the low-voltage capacitor C3 connection in series with the high-voltage (HV) capacitor C1 and the median-voltage capacitor C2. Simulations studies and laboratory tests in manufactory...
In virtualized environments, the customers who purchase virtual machines (VMs) from a third-party cloud would expect that their VMs run in an isolated manner. However, the performance of a VM can be negatively affected by co-resident VMs. In this paper, we propose vExplorer, a distributed VM I/O performance measurement and analysis framework, where one can use a set of representative I/O operations...
This paper proposes a power and area efficient electrocardiogram (ECG) acquisition and signal processing application sensor node for wireless body area networks (WBAN). This sensor node can accurately record and detect the QRS peaks of ECG waveform with high-frequency noise suppression. The proposed system is implemented in 0.18- complementary metal–oxide–semiconductor technology with two...
AS well as in real physical environment, time subsystem is also a vital part in the distributed virtual environment. DVMM, based on multi-nodes and achieves single system image, has faced with the challenge of the time accuracy. High Precision Event Timers which is broad supported in current Linux kernel as a system clock source and can even be used to replace of PIT and TSC, can improve the accuracy...
This paper proposed a kind of new supervisory system of computer the distribution supervisory system of computer. The system is arranged through scattering, stratified control, which is developmental, and with powerful mutual operating ness etc. The practical experience of the system for eight years in Huajia (Henan) indicated that the system is reliable, safety, real-time and economy.
Performance evaluation is crucial to increasing equipment availability and reliability as well as facilitating further proactive maintenance. This paper presents a novel condition-based early stage diagnosis method using robust ant colony clustering algorithm and feature mapping. Vibration signals acquired from equipments are decomposed by wavelet packet transform after wavelet denoising, and then...
In this paper, a miniature low-power Electrocardiogram (ECG) signal processing application specific integrated circuit (ASIC) chip is proposed. This chip provides multiple critical functions for ECG analysis using a systematic wavelet transform algorithm and a novel SRAM-based ASIC architecture, while achieves low cost and high performance. Using 0.18 μm CMOS technology and 1 V power supply, this...
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