Research On The Airport Noise Test System Based On Wireless Sensor Network

With the rapid development of China’s aviation industry, the problem of airport noise pollution which has become increasingly prominent has already become one of the major environmental issues faced by aviation airport. And the assessment of airport noise has been also an important factor for the expansion and renovation of the airport. The airport noise data survey system which combines ZigBee wireless sensor networks with embedded systems has been designed. Also, a complete solution has been proposed for airport noise data’s collection,transmission, analysis, and processing.CC2530 module has been selected in the part of airport noise data collection and transmission of the system. Based on this, ZigBee network has been built. The software of airport noise data transmission node has also been designed, which includes adding tasks,establishing a wireless network, transmitting and receiving data. A distal end of the airport noise data collection has been constructed, and the hardware and software of AD conversion and codec circuit had been designed.The development board TX2440 A which based on ARM9 has been selected in the part of the airport noise data processing. The porting of U-Boot and embedded Linux operating system kernel has been completed, and file systems have also been produced. In addition,SQLite embedded database and QtEmbedded graphical interface library have been installed.The noise data storage procedures have been written in C and SQL language, and it has realized the storage of airport noise data by using the embedded database. Embedded graphical interface has been designed by using Qt embedded graphics library for showing sound intensity of the collected airport noise data visually. At last, according to the collected airport noise data, the airport noise contour map has been drawn by Surfer software in PC.