نمونه متن انگلیسی مقاله
In this paper, a real-time and early warning gas leakage monitoring system has been developed for large-scale region based on Mobile Wireless Sensor Networks (MWSNs). The system consists two parts: sensor terminal and center server. A sensor terminal includes TDLAS gas sensor which has remarkably high accuracy and reasonable size, microcontroller, Global Position System (GPS) receiver module, General Packet Radio Service (GPRS) module and power module. The center server is developed to receive, process and store the data. A real-time monitoring cloud platform is developed to display real-time data. A mobile wireless sensors networks, which consists of mobile sensor terminals and stationary sensor terminals, enable a large-region leakage monitoring. Experiments are carried out to valid the system. The results show that the real-time and early warning gas leakage monitoring system developed in this paper is reliable and practice.
Gas supplement is crucial to maintain daily running of city, and is named as “lifeline” of cities. Due to the large scale of pipelines systems and overtime service, gas leakage occurs quite frequently and causing serious casualty and economic loss. Gas leakage monitoring and detection system is of great significance for urban safety. Gas-leakage monitoring with wireless sensors network has been a wide accepted idea for developing an integrated system for real-time monitoring . Somov A, Baranov A, Spirjakin D, et al. adopted a Wireless Sensor Networks (WSNs) with catalytic gas sensors and ZigBee module, and deployed it in a factory. They studied the catalytic gas sensors response under various conditions, and evaluate the wireless links using the received signal strength indicator (RSSI) and link quality indicator (LQI) metrics . Jain P C, Kushwaha R adopted a WSNs with semiconductor sensor and ZigBee module, and discussed the potential application scenarios, such as apartment house, gas and oil pipeline industry.