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Due to the deficiency of data transmission speed and capacity of the GSM / GPRS network, in this paper we present the design of a data transmission system in the remote monitoring system of composite insulators, which is based on 3G and embedded technology. The program uses OK6410ARM11 as a controller, and uses AD3812_V2 as a 3G communication module. This paper briefly describes the hardware design,...
Video is one of the most popular services in Internet. How to support large scale of streaming media transfer over the Internet has been studied in both academic communities and industry fields. VQM (Video Quality Monitoring) at the end point or in the network is necessary to improve customer's Quality of Experience (QoE). This paper first analyzes the requirements of VQM over the Internet. Then,...
Real-time video monitoring is necessary for remote control mining while real-time positioning of underground equipments is also necessary for unmanned mining. In this paper, a new pattern combining WLAN with ZigBee is proposed to solute the two problems above. In the pattern, RSSI(Received Signal Strength Indication) values of ZigBee anchor nodes are used to calculate the position and posture of underground...
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