Analysis and handling of biased data provided by wireless sensor networks with lack of energy Online publication date: Thu, 30-Mar-2023
by Fernando Lima Vicente; Adilson E. Guelfi; Anderson Aparecido Alves da Silva; Marcelo Teixeira de Azevedo; Bruno Elton da Luz; Eduardo Takeo Ueda; Sergio Takeo Kofuji
International Journal of Sensor Networks (IJSNET), Vol. 41, No. 3, 2023
Abstract: Wireless sensor networks consist of several battery-powered microelectronic devices whose purpose is to monitor the environment in which they are deployed. When a device's battery is almost completely discharged, it can stop working or start producing distorted or biased data, making monitoring unfeasible. Thus, many works seek to control the energy level of the sensor node to avoid the described behavior. However, battery-powered wireless networks inevitably run out of energy at some point in time. In this way, the objective of this study is to propose, implement, and compare methods that treat the data which are biased due to the lack of energy of the network devices. This method consists of joining estimating mechanisms like Kalman filter and GM (1, 1) with another technique to measure the reliability of the network devices based on the available energy in the nodes' batteries.
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