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This paper presents a wearable accelerometer-based device for monitoring multiple physiological parameters of human body in sleep. Dual tri-axis accelerometers were attached on left and right chests of body for acquiring six-degree acceleration components. By using an advanced algorithm of signal processing and data fusion, the thoracic respiration, heartbeat, as well as body posture and activity...
Research results show that the water depth of the Three Gorges Reservoir Zone, which is directly related to its safety, is of great significance to the operation and environmental protection of the Zone. This article, based on satellite-aided water-depth monitoring methods, shall wholly adopt the data of CBERS-02B with sole Chinese intellectual property rights and, in combination with the grey relevance...
Water environment monitoring system based on WSNs consists of three parts: data monitoring nodes, gateway and remote monitoring center. The wireless gateway is communication center in the monitoring network between those data monitoring nodes (ZigBee network) and remote monitoring center (GPRS network). Based on the MSP430F1611 and CC2430 dual architectures, this paper researches on a wireless gateway...
This paper analyses the design conditions for the wireless communication system for remote monitoring; adopts OFDM and reticulate topology; designs harmony mechanism of nodes in the system, decision-making mechanism of transmission channels and the frame formats of data transmission. At last, we evaluate the system's performance. We present a communication system model, which realizes remote control...
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