Design And Application Of Real-time Dam Deformation Monitoring Instrument

Recently，Chinese hydropower business has been developing rapidly, Someprojects like how to operate hydropower stations safely and steady have been chosento be part of China’s hottest projects contemporary. The real-time safety monitoringis one of an indispensable work, to protect the station’s benefit and people’s life.Furthermore, the deformation monitoring is the key technic part in the dam safetymonitoring system. To ensure the operation of hydropower stations’ safety,economics and stability, the essencial way is using the monitoring devices bymonitoring and feeding back the deformation data of dam body, dam abutment anddam bedrock.According to the real-time deformation monitoring requirements of operatingthe hydropower station, the article has devised a dam monitoring device based onSTM32F103VC. The device can accomplish the real-time monitoring when thehorizontal or vertical movement occurs, using charge-coupled monitor device tomeasure the change of the line body’s location. The industrial LCD can be displayedin the final results in this device. Moreover, it also can regulate and control thedisplayed data and the measuring parameters through bottoms on the device or thePC software. The article has largely improved the stability, real-time ability andmeasuring accuracy of the device; with the method of bettering the hardware circuit,bettering the edge-detection and transplanting the μC/OS-II operation system. Firstly,the device’s anti-interference ability has been improved by the pre-procession ofCCD signal noise, the insulation of communication module and the impedancematching. Additionally, the devise has carried out the division of the self-protectionof power circuit. Hence, it not only enhanced the device’s exception handling andself-recovery ability, but also declined the error rate of data transmissions below10-6.Thus it can improve the stability of devices. Secondly, the article processes the CCDsignal through correlated double sampling and AD convertor, then the processed datawill be linear fitted to determine the final edge dot. By using this way, the accuracyof monitoring can be improved. Finally, the article intercepted and transplantedμC/OS-II operation system, achieved the function of switch and dispatch in eachmission, optimized the software management process of system function module andimproved the real-time ability and the monitoring system’s stability at the same time. The designed real-time dam monitoring system in this paper has made greatimprovements in monitoring precision, monitoring stability and monitoringintelligence. It is already far more superior to the requirement standard in Technicalspecification for safely automatic monitoring of dam..