Aiming at the problems of poor measurement precision

complicated flow measurement and data processing in open channel

a new type of swing bar type open channel flow measurement system is designed. The system takes ARM processor as the core

and the sensor mainly includes ultrasonic module and inclination monitoring module. Meanwhile

in order to improve the real-time performance of the system

the software is also equipped with μC/OSⅢ real-time operating system and em Win graphics library. When the system measures the flow

first the data of each sensor is collected and processed

then the system obtains the flow through the formula

and displays the data on the LCD screen. Meanwhile

the data will be saved and uploaded automatically. The experimental results show that compared with the traditional open channel flow measuring device

the system greatly improves the accuracy and real-time performance in the open channel flow measurement

and greatly simplifies the flow measurement process and improves the flow measurement efficiency.