| dc.description.abstract | At present, common wireless sensing network(WSN), most are based on a single
dimension and non real-time streaming types of sensors, such as temperature,
humidity, or Smoke etc. Sound sensing presents the highly instantaneity of real time
data streaming characteristic. When it in wireless networks usually require low
latency transmission performance. This research focuses on sound detection, signal
processing and wireless sound transmission of the application, and design a low
power wireless sound sensor network
We refer to the IEEE 802.15.4 and Zigbee protocol, features for wireless sound
transmission, and design a wireless sound sensor network MAC layer protocol to
provide a streamlined and high efficient communication. We have planned a wireless
sound transmission packet structure, and propose a new s wireless sound
synchronization method, to improve the wireless signal transmission voice packet loss
caused by the discontinuity. Finally, we design a power management strategy can
effectively achieve the energy conservation.
We implemented wireless sound sensor network and system integration
verification with the ARM Cortex M3 embedded microprocessor platform.
Experimental result shows, We designed the system for the sound delay and
synchronization with superiority features, Compared with traditional wireless data
transmission, we reduced about 50% packet size, therefore transmission times can be
reduced, enhances the efficiency and saving the power consumption.
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