Directional mobile charging method for mine Internet of things. Issue 19 (1st December 2019)

• Record Type: Journal Article
• Authors: Hu, Qingsong; Cheng, Yong; Li, Binghao; Wang, Yajun; Li, Shiyin
• Is Part Of: IET communications. Volume 13:Issue 19(2019)
• Page Start: 3285
• Page End: 3293
• Publication Date: 2019-12-01
• Subjects: computational complexity -- inductive power transmission -- wireless sensor networks -- battery chargers -- battery powered vehicles -- adaptive antenna arrays; high charging efficiency -- power demand -- MIoT nodes -- directional mobile charging method -- mine Internet -- wireless charging -- continuous operation -- stable operation -- smart antenna -- mobile charger -- theoretical calculation method -- charged energy -- approximate calculation algorithm -- effective charging distance -- transmitting power; Telecommunication systems -- Periodicals; Speech processing systems -- Periodicals; 621.38205
• DOI: 10.1049/iet-com.2018.6008
• Languages: English
• ISSNs: 1751-8628

Abstract

Abstract : The nodes of the mine Internet of things (MIoT) are powered by batteries, for which the wireless charging is essential for their continuous and stable operation. This study proposed a method of directional mobile charging for the MIoT based on smart antenna, in which the mobile chargers charge the nodes need power not only when stationary, but also when moving. The theoretical calculation method of the charged energy is studied and established its approximate calculation algorithm, which can greatly reduce the computational complexity, based on the discretised model of effective charging distance of smart antenna. Then, the method for estimating the residual energy of the nodes was designed, and the upper bound of the transmitting power of the mobile charger was determined. The results of the simulation experiments indicated that this method has high charging efficiency and can meet the power demand of MIoT nodes.