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This paper deals with the influence of IDT (interdigitated transducer) structure and input signal on responses of passive wireless sensor SAW (Surface Acoustic Wave). We used simulation software based on finite element method (FEM) with YZ-LiNbO3 piezoelectric substation has 80 μm thickness, 3 reflectors, material of the reflecting bar is Al and the structure of IDT is SPUDT (single-phase unidirectional...
This paper considers a wireless power transfer system with multiple antennas by using the multicarrier signal waveforms. A prior art optimizes the waveform with the channel state information at the transmitter (CSIT) to improve the energy harvesting efficiency of the receiver with the non-linear model. The impact of the imperfect CSIT on the energy harvesting capability is studied as a function of...
Recently, attempts have been made to change the paradigm of existing plants by applying ICT to the manufacturing industry. It can be seen as an extension of factory automation, which used to automate production facilities and unmanned work in the past, but Smart Factory is an advanced model to predict and respond to the future situation. In this paper, we propose a controller that is optimized for...
One of many important activities in the Wireless Sensor Network is the localization for tracked devices. Received Signal Strength (RSS) is a parameter of the power level that being received by the radio which can be used to track the location of the devices. This paper evaluates the localization of ZigBee devices which uses RSS fingerprinting by artificial neural networks. The RSS data processing...
Wireless sensor networks have emerged as the major criteria that enable the Internet of things evolution. They have wide application range from special domain to civilian and scientific domain thus it is attracted a lot of research. Since security is of the crucial importance of wireless sensor networks, there are existed several authentication techniques for digital right management, and watermarking...
The resource constraint is one of the top issues in the Internet of Things network. All activity in the network node should be carefully designed and managed to support the resource efficiency of the network. Hence, an energy efficient transceiver like ZigBee is popularly used as the infrastructure for the Internet of Things edge network. This paper presents our method for efficient ZigBee router...
In this paper, we present a new beacon recognition method for wireless sensor devices to access beacon-enabled WSN with low-power consumption. At first, we explain necessity of the low-power beacon recognition in the beacon-enabled wireless sensor networks. By realigning network resources, we catch that beacons are in the same position in each BI (beacon interval). Then, we propose how to switch operation...
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