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Longtan hydropower dam concrete pouring equipment main scope of work is large, overlapping each other, pouring high strength, running speed, and the region's foggy. Because of these factors exist in the concrete pouring process prone to crashes, a significant impact on the construction. In order to avoid possible collisions, we developed anti-collision system for construction equipment. Collision avoidance system is mainly based on GPS technology for the construction of large-scale equipment for tracking and positioning, if you know the device parts on the spatial coordinates of a point, and then by the rotation center of large equipment spatial coordinates and size of components, you can get parts the spatial coordinates of the endpoints, a graphical plot of these data can be displayed and operation of the device the speed of the position. This article first hydroelectric dam pouring equipment types, structure and functioning as well as they are usually working conditions were analyzed to study the laws of these devices braking. Hydroelectric dams introduced anti-collision system, pouring equipment programs, including GPS data collection systems, wireless microwave communication systems, GPS data processing systems, collision warning analysis system, the direction of the signal acquisition system and alarm system, etc., depending on the operator response within the device running from the current speed, the normal operation of the braking device when the distance as well as the safety margins set aside the relationship between the distance to determine the level of alert, the principles specified warning level, anti-collision The avoidance principles and priority levels, to develop anti-collision warning system solution. The use of object-oriented software design, and strive to make direct analog kind of soft systems, according to the relationship between large-scale equipment for various collision phenomena classification; use of object-oriented encapsulation, inheritance and polymorphism to multiple inheritance component module to the device from the module functions aggregated into a class that implements collision analysis between the devices. In order to achieve high cohesion low coupling of software, the program with the more popular visual programming tool for the preparation of visual C 6.0. VC is an object-oriented programming language, but also an integrated development tool that provides a powerful library, with the vast majority of Windows API functions, and for users to develop Windows applications created a very flexible application framework . With this framework, users can easily develop a standard Windows interface applications, to improve software development efficiency. RS-232 serial programming techniques, remote monitoring, and industrial automation applications in the field more widely; Furthermore RS-232 transmission distance, if and Modem can be connected to the world to send and receive data; well as the RS-232 hardware programming requirements are relatively simple. Because of these advantages, the system uses the RS-232 interface and wireless microwave communication systems and GPS data processing systems connected. The system is connected with a serial GPS data processing system GPS data sent, six serial signal acquisition system is responsible for receiving direction 6 sets of equipment sent to the direction of movement signals, such as cable machine hoisting, luffing and mobile tower , the top with a machine amplitude, the inflection point
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