| Along with highways, railways, water, mines and other projects to develop rapidly, our construction of the tunnel has appeared in large numbers. During the construction of concealed works such as the highway tunnel, the rail tunnel, the mining tunnels, the water tunnels, as the front unknown geological conditions, there often caused landslides, debris flow, Chung water, Chung sand, gas explosion, sharp rock cave and other geological disasters when barge up against the adverse geological which as the fault broken belt, the underground river, the Highland stress and so on. The emergence of such disasters, often affects the construction progress, causing casualties, the construction units to the country and its people have serious economic losses. "Tunnel Forecast," which came into being, has attracted increasing attention to the people. From the perspective of shallow seismic exploration start, using seismic reflection wave method and drawing TSP Forecast System implementation plan, designed and developed a tunnel used by the prediction of high lightweight and convenient to detect the tunnel ahead of seismic data acquisition for.In this paper the development work acquisition unit carried out a detailed exposition, the full text is divided into six chapters:Chapter 1 Introduction mainly expounded the importance of research on the tunnel advanced detection technology and development at home and abroad the status quo, comparative analysis of the tunnel ahead of the field of detection methods used, which determine the direction of this study and main contents.In the second chapter, the first description of the methods commonly used tunnel Forecast: TVSP (Tunnel Vertical Seismic Profiling) and TSP (Tunnel Seismic Predication) the working principle and then introduced into Overview of system development and attention to the matter, the finalization of the overall programme and the expected targets. Chapter III is the acquisition of the hardware circuit design, including: on the weak signal detection and sealing design thinking, the design of data acquisition module, the design of ARM control module, power supply module. In the Data Acquisition module design, the main right -ΔΣanalog-digital conversion technology, analog signal conditioning circuit, system testing circuit, A / D analog-digital conversion circuitry, A / D hardware interface circuit of the four carried out a detailed exposition. ARM in the control module on the design, first of all briefly introduced ARM technology, and then introduced the core chip AT91SAM9261 the characteristics of the final system is the smallest circuits and related peripherals circuit design method. A DC-DC voltage converter designed the system power modules.Chapter IV for the design of the system software on embedded Linux kernel and the basic knowledge of DataFlashBoot, U-Boot, the concrete core method of transplantation, CF card, Ethernet ports, integrated LCD touch function of peripheral equipment, such as functional the specific method. Chapter 5 of the test results were analyzed by the design of the tunnel ahead of detecting seismic data acquisition system prototype was tested (mainly including: Enter short circuit noise tests, sine wave test, peripherals, functional testing), the preliminary test results, and on the results of a simple analysis concluded.Chapter VI for the full sum up, this paper summed up the main research work and results, for lack of further recommendations for improvement.
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