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Intelligent home system based on ZigBee and CPS is proposed in this paper after studying the structure and function of ZigBee protocol and CPS (Cyber-physical systems). The remote communication is done by GPRS network. ZigBee wireless network platform uses the low power microcontroller CC2530, which consists of a photosensitive sensor, combustible gas sensor, humidity sensor, infrared sensor and 12864...
The focus of Wireless sensor networks is how to use limited energy to be able to make the network more effectively. Therefore, energy-saving research has becoming a major focus of recent research, and the network topology control is a part of energy-saving research, We propose that the sensor field be overlaid with a honeycomb virtual mesh based on a tessellation. Based on this cellular structure,...
The using of human auditory feature in acoustic echo cancellation (AEC) is discussed in this paper. Firstly, the AEC based on sub-band is introduced. After that, the auditory equal-loudness and masking effect are introduced. At the same time, two kind of AEC algorithm is proposed, the first is sub-band AEC using auditory equal-loudness feature and the second one is the sub-band stereo AEC using auditory...
Reducing energy consumption has been a recent focus of wireless sensor network research. Topology control explores the potential that a dense network has for energy savings. We propose that the sensor field be overlaid with a honeycomb virtual mesh based on a tessellation. Then with the help of greedy forwarding algorithm and perimeter forwarding algorithm, we can bypass a void or obstacles easily...
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