The Reaserch Of High-speed Wireless Data Transmission System Under Mine

With the requirements of mine safety production, the modern wireless communicationtechnology has been used in the mine on the communication and monitoring, take the specialenvironment of disasters and the demand of safety in rescue work underground coal mine intoconsideration, and draw a comparison with implementation of the existing wireless networktechnology, which WLAN technology with its extensive coverage, and the advantages ofwireless ad hoc networks easily, has the very good application prospects.This paper on the basis of to achieve the "coal mine underground emergency rescuecommunication system", Proposed the solution of a short-range wireless communicationsystem in front of the scheme, and it take the ARM processor (S3C2440A) as the core andbuilding the hardware platform, choose Linux as embedded operating system, and realizedwireless data transmission system based on WLAN network. Including the overall designanalysis of hardware and software. At first, has studied the embedded system hardwareplatform framework and on S3C2440A microprocessor as the core, and provided a detailedanalysis of the design requirements to achieve the minimum of the function of each ARMsystem modules, mainly including: ARM core modules, power module, storage module, serialcommunication module, USB port communication module, digital video interface module, etc.and provided the overall design in parts of embedded software system, introduces thedevelopment environment of the embedded system establishment, the kernel transplantation,and analysis of the embedded system software architecture and the process of start-up,researched on the development of the wireless data transmission terminal software, mainlyincluding: video acquisition, data compression, interface driver, and wireless videocommunication based on WLAN technology task for the development of software module.In this article, the design and implementation of wireless data transmission system basedon the ARM processor and WLAN network to meet the front systems’ video data short-rangewireless transmission, it also can extend the distance of transmission through the WLANnetwork, the wireless receiver connected the underground transmission monitoring center in the way of cable transmission, to improve the front-end flexibility of the whole emergencyrescue communication system. On this basis, take the cto system development board as thesender, expanding the PC for the receiver, to achieve the commissioning of the wirelesscommunication tasks, and do the test in the speed of data transmission, and it basically meetthe design requirement. finally, the papers doing a summarized on the finished work,and havemade a further discussed for the future of the terminal system.