微机测流系统的开发与应用

Development and application of microcomputer-controlled river flow measuring system

微机测流系统分为水下部分和水上部分。水下部分包括测速仪、测深仪和采样器等一次仪表。测速仪选用常规流速仪，测深仪采用ＹＳ—２０型压力测深仪，悬移质采样器采用重庆水文仪器厂生产的调压式积时采样器。水上部分包括计算机、打印机、显示器、电源以及接口件等。微机测流系统具有功能齐全、结构合理、操作简便、可靠性高等特点。１９９１年３～１０月对该系统进行比测试验，测深平均误差为０．２５％；测速平均误差为０．１４％；施测流量平均误差为－０．０５％。１９９２年１２月投入生产使用，效果令人满意。

The microcomputer-controlled river flow measuring system consists of the underwater and aboveground devices. The former involves the velocity meter, the depth finder and the sampler. In the system, the conventional velocity meter, the Mode YS-20pressure type depth finder, and the pressure-adjusted time-integrating sampler for suspended load produced by Zhongqing Hydrologic instrument Factory, are used. The latter involves the microcomputer, the printer, the display, the power source, the interface and others. The system has such features as complete function, reasonable structure, convenient operating, and high reliability. The system was checked by comparative tests in March through October, 1991. The results show that the average error for water depth is 0. 25%.for flow velocity 0. 14%, and for discharge-0. 05%. The system was commissioned in December 1992, and its performance has been satisfactory.