| With the development of economy and society in our country, it is necessary to provide more general, timely and reliable hydrological information, so as to serve better for flood control and drought relief, water resources optimal allocation and water environmental protection. Most developed countries mainly run a management model of combination automatic monitoring with tour gauging, and use bridge to measure flow. However our country has managed station by stationary gauging . Currently, there are many flow measuring devices, such as box cableway, boat cableway, velocity meter cableway and power boat etc.YKYC-200 remote control and telemetering box cableway measuring system realizes unattended flow measuring. On one hand, surveying people could operate the box and lead fish hoist and fall, halt, acceleration and deceleration remotely in the operation room, on the other hand, it achieves automatically collecting, processing, coding and disseminating of water depth and velocity information, which makes the flow telemetering come true.The system is composed of frequency conversion box, control system, telemetering system, remote control system, circulation system, circulation winch and cableway.The system runs by frequency conversion technique to improve the operation dependability and stability of box and lead fish. Horizontal and vertical motions of box consider three operational methods: manual panel operation, touch screen program control operation and portable remote operation, so does vertical motion of lead fish. Calculation of discharge is completed by computer. And it implements automatic sampling, processing, calculation, output of distance from the initial point, depth and velocity.The innovation is that the system makes unattended flow measuring come true. surveying people can not only do water performance without taking box but also do some remote operation about box and survey depth and velocity in the operation room .It... |