Environmental Monitoring System of Hospital Ward Based on WSN
Abstract: In this paper, a set of hospital environmental monitoring system based on WSN technology is suc-cessfully designed. The system uses CC2530 TI as the core chip to form sensor nodes and sink nodes, sensor nodes to collect hospital environmental parameters, including temperature, humidity, light parameters, the application of ZigBee technology to achieve self-organizing network, through single hop or multi hop to the sink node transmission data, and ultimately the data uploaded to the control center. Data transmission reliability is a key problem in wireless sensor network design and implementation. Based on the degree constrained shortest path tree (DCSPT) algorithm, this paper designs the network topology and path selection. The algorithm can effectively reduce the “hot issue”, at the same time, the network provides multi path transmission and the transmission of the shortest path, through the network average hop number, network robustness, data transmission rate index in the topology of the network performance is evaluated. The experimental results show that the WSN technology is used to realize the data transmission of wireless ad hoc network, which has the characteristics of stability, reliability, easy expansion and maintenance, and can meet the requirements of the application.
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