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In recent years, the rubber dam is favoured by more and more people for its small investment, short period of construction, quick effect, easy management, adaptability, and other characteristics. Taoyuan rubber dam in Yihe River as a Riverbank comprehensive harnessing of the key projects in Linyi City in Shandong Province, it charges with many functions, such as the protection of industrial and urban living water supply, groundwater recharge, the development of tourism and water transport, building a eco-city, and so on .The entire project includes both the water-filling rubber dam and the sluice. The whole length of the hub is 988.2m, of which the width of the sluice is 25m and the rubber dam is 783.2m long. In order to insure the safe and reliable operation of the rubber dam, and to make it work as the desired efficiency and function, we have designed and developed the monitoring system of Taoyuan rubber dam.The dam monitoring system of Taoyuan rubber is an effective way of strengthening the water scheduling and supervision. This system adoptes the contemporary advanced technologies, such as modern computer science, PLC technology, network technology, automatic control technology, Digital image coding/uncoding technology, Multi-senor data fusion technology, Intelligent detection technology, wired/wireless communication technology, multimedia technology and so on, realizing the integrated monitoring system of the information, image and control, which has guaranteed the safe management and monitoring automation of Yihe River.In this paper, we research the following contents and put them into effect:1.Intelligent control of water filling and drainage.Through the real-time monitoring the dam bag pressure, water level of upstream and downstream, the water level and flow in Gegou, and the dam height and so on, we use the soft-starter to realize filling and drainage control of the rubber dam.2.The automatic control of Ships’ up-going and down-going According to the automatic measurement about water level of upstream and downstream and the sluice chamber, and the gate opening, limit sensors, with the help of traffic lights, we have realized the automatic control of the sluice.3. Realizing the scheduling and control of the authority sluice and bag both the locale and HMI, with returning the real-time various conditions information of the gates and pumps.4.Automatic monitoring of the dam safety.Through the automatic measurement of the seepage, use the plot-bit map method to achieve consistency sensor group, based on this information use the theory of a multi-sensor information fusion to merge the information.5. Image transmission and coding/uncoding technology, which realizes the wired and wireless real-time rapid transmission of the images.Through effective coding and uncoding technology, it improves the image quality, and realizes the remote control of cameras, including Pan & Tilt and the camera lens control.6. We has researched and developed the operation platform which is suitable for the scheduling and monitoring of Yihe River, adopting a standard graphical interface and operating modes, simulation animation, describing the operation of the rubber dam and the surrounding environment. The operation is simple, safe and reliable.There is a deep study to water filling and drainage control, wireless access technology, video transmission, HMI monitoring and multi-sensor data fusion technology and other issues in this thesis, succeeding in realizing the real-time data monitoring and image monitoring and real-time control. Since put into operation in September 2007, the system has been running in good condition without fault.
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