A large-scale water conservancy hub project undertakes important tasks such as flood control, irrigation, and power generation. Its sluice gate system is of a large scale, including multiple sluice gates of different specifications, and accurate control of the sluice gate opening degree is required to ensure the safe operation of water conservancy facilities and the efficient exertion of their functions. In the traditional detection methods of sluice gate opening degree, there are problems such as low accuracy, poor reliability, and the inability to conduct remote real-time monitoring, which makes it difficult to meet the demand for refined management of modern water conservancy projects. Therefore, this water conservancy hub decided to introduce advanced detection equipment and control systems to improve the accuracy and intelligence level of sluice gate opening degree detection and control.
MPS Rope Displacement Sensor: As the core detection element, the MPS rope displacement sensor is installed near the sluice gate lifting mechanism. Its rope is connected to the sluice gate. When the sluice gate moves up and down, the rope expands and contracts accordingly, and the precise measurement device inside the sensor converts the displacement change into an electrical signal. This sensor has the characteristics of high measurement accuracy (up to ±0.05%FS), a wide measurement range (depending on different models, the measurement range ranges from 0.5 meters to dozens of meters, which can meet the detection requirements of sluice gates of various sizes), and a long service life (using high-quality materials and advanced processes to adapt to the complex and harsh working environment of water conservancy projects).
Displacement Digital Display Instrument: Used in conjunction with the MPS rope displacement sensor, the displacement digital display instrument is installed on the console in the sluice gate operation room. It receives the electrical signal from the sensor and converts it into an intuitive digital display, clearly presenting the current opening height value of the sluice gate. At the same time, this instrument has powerful functions. Users can conveniently set the limit alarm value through the buttons on the instrument. For example, after setting the maximum opening height and minimum closing height limits of the sluice gate, once the sluice gate opening degree reaches the corresponding limit value, the instrument will immediately trigger an audible and visual alarm to remind the operator to take timely measures, effectively preventing the sluice gate from being opened or closed excessively due to operational errors and ensuring the safety of equipment and personnel.
Data Transmission and Control System: The displacement digital display instrument can output an analog signal (such as the common 4-20mA current signal or 0-10V voltage signal), which can be directly connected to the central control system of the sluice gate, facilitating the staff in the central control room to understand the on-site sluice gate opening degree situation in real time and conduct remote control operations based on this. In addition, the instrument also supports the RS485 communication interface. Through this interface, the sluice gate opening degree data can be remotely transmitted to the background management system of the water conservancy project. The RS485 communication has the advantages of long transmission distance (up to 1200 meters at the farthest) and strong anti-interference ability, ensuring the stable transmission of data in a complex electromagnetic environment. The background management system can centrally store, analyze, and display the opening degree data of each sluice gate, providing powerful data support for the scheduling decision-making of the water conservancy project.
Precise Control: Since the adoption of the MPS rope displacement sensor and its supporting system, the control accuracy of the sluice gate opening degree in this water conservancy hub has been significantly improved. Under the previous traditional detection methods, the error of the sluice gate opening degree might reach several centimeters or even larger. However, now through the MPS system, the opening degree control accuracy can be stably maintained at the millimeter level, greatly improving the operation efficiency and safety of the water conservancy project. For example, during the irrigation season, the sluice gate opening degree can be controlled more precisely, and water resources can be allocated reasonably according to the water demand of crops, avoiding the adverse effects on the growth of crops caused by excessive or insufficient water volume.
Real-time Monitoring and Remote Operation: With the help of the analog output and RS485 communication functions, the central control room and the background management system can obtain the opening degree data of all on-site sluice gates in real time and achieve remote operation. No matter where the management personnel are, as long as they are connected to the background management system via the Internet, they can check the operation status of each sluice gate at any time. In case of an emergency, they can also remotely control the opening and closing of the sluice gate. This function has played a huge role in critical moments such as flood control and rescue, being able to respond quickly to the changes of floods, adjust the sluice gate opening degree in a timely manner, and effectively reduce the threat of floods to the downstream areas.
Reliability and Stability: The detection system composed of the MPS rope displacement sensor and its supporting instrument shows extremely high reliability and stability. During the operation of this water conservancy hub over the years, there are very few failures. Even in harsh environments such as high temperature, high humidity, and strong electromagnetic interference, it can still work continuously and stably. Compared with the frequent failure problems of traditional detection equipment, it has greatly reduced the equipment maintenance cost and the downtime caused by equipment failures, ensuring the continuous and stable operation of the water conservancy project.
Cost-effective Advantage: From the perspective of the overall project investment and long-term operation cost, the MPS rope displacement sensor detection solution has significant cost-effective advantages. Although a certain amount of capital investment is required in the initial stage of equipment procurement, considering the high-precision control, efficient operation management, low maintenance cost it brings, and the important role it plays in ensuring the safety of water conservancy projects, compared with other similar high-precision detection solutions, its comprehensive cost is lower. Therefore, this solution has been widely recognized and applied in the water conservancy industry. Many water conservancy projects have drawn on and adopted it one after another, providing a strong support for the modern development of the water conservancy industry.
