دو ترموکوپل کم قدرت شبکه سنسور بی سیم Two thermocouples low power wireless sensors network

1. Introduction Temperature is certainly among the most commonly measured parameters in industry, science, and academia. Recently, the growth of wireless instrumentation technology, along with some clever innovations, has provided new ways to apply temperature measurement sensors combined with personal computers to collect, tabulate, and analyze the data obtained. For complex, multi-sensor applications, wireless devices provide a means to eliminate the nuisance of running multiple leads over long distances through harnesses or conduit to a control room, instrument panel, or equipment rack, while keeping track of which leads are which. For simpler one or two sensor applications, it means installing the wireless sensor, setting up the receiver, and being done [1]. The flexibility and connectivity of wireless networks are the factors which have significantly contributed to the increase of their popularity. Wireless sensor networks have become highly relevant in processes such as system monitoring, actuation, target tracking, automation and process control [2]–[8]. Wireless sensor networks have proved to be irreplaceable when overcoming the costs and technical difficulties associated with the use of wired networks [9], [10]. When it comes to the wireless communications, one may choose from a great variety of protocols [2]–[4], depending on the specific needs associated with the application. Regardless of the specific geographical or geopolitical factors observed in various countries around the globe, one of the essential issues associated with the use of such networks remains environmental monitoring and conservation. The goal of this work is to create a wireless network consisting of various types of sensors (temperature, humidity, pressure, etc.) whilst ensuring minimal wireless sensor energy consumption. This would allow to operate such network with mobile energy sources such as batteries or accumulators for at least several years.