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WIA-PA network, which is specified by IEC/PAS 62601 for process automation based on IEEE 802.15.4, is used for industrial monitoring, measurement and control. A novel WIA-PA gateway technology is developed to support EtherNet/IP protocol. By a prototype of wireless gateway, a wastewater treatment system is implemented with a WIA-PA network monitoring subsystem and an EtherNet/IP network control subsystem...
This paper studies the problem of constructing maximum-lifetime data gathering trees in sensor networks in which the power levels of sensors are heterogeneous and adjustable. In-network data aggregation is also employed to aggregate sensor data while they are being forwarded toward the base station. For sensor networks in which sensors have fixed and the same transmission power level, Wu et al. has...
The power is the most significant resource in wireless sensor nodes, so energy conservation is the most important factor in designing the protocol for sensor networks. In this paper, we study the problem of energy-efficient collection of the physical information from the target area. The coverage-preserving data gathering (CPDG) problem is to build up a tree, which minimizes the total energy consumption,...
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