Development Of Image Monitoring System On Hydraulic Machinery Test Bench

Along with our country's rapid economic development, the demand for electricity is growing. At present, Coal-fired Power stations is still the main source of electricity energy. This mode of production of electrical energy poses a great danger to the environment. This is obviously contrary to the concept of environmental protection and people's desiring to pursue high quality of life. Hydropower is one of the power- production ways which are the least negative impact on the environment. Vigorously to develop hydropower has become an important way to solve the conflict between the great demand of energy and environmental protection. Hydroelectric power stations are becoming more and more automated and complex, no matter which parts of the station facing a problem would affect the normal operation of the unit. Turbine is the key component in the hydropower station and is also the highest accident rate component. Therefore, rational designing turbine to reduce the impact of cavitation has become an important issues turbine manufacturers have to face. The cavitation and cavitation erosion's image data obtained through the experiment is an important basis for the design of turbine.This article takes current several ways of inspection of turbine cavitation as a starting point to design a system to obtain cavitation image data. Total system includes image acquisition, image transmission, the image data processing system which is formed by the PC, the synchronization trigger signal modules and other subsystems. This article's main structure is: first, introduce the hardware components of the system; then the trigger signal synchronization module, software design, and finally the application software design. In part of hardware design, Protel DXP software is used to draw schematic and produce PCB board in designing the trigger signal synchronization module. In part of software design, Keil C51 is used to design the program of the trigger signal synchronization module; PC software applications written with VS 2010.After debugging and testing, system can work normally and all the objectives are achieved.