Device for measuring flow of open channel

The invention discloses an open channel flow measuring device which comprises an open channel flow box arranged in an open channel, n layers of ultrasonic transducer sets arranged in a crossed mode, n sets of ultrasonic time signal processing devices and a microcontroller. Each ultrasonic transducer group is arranged on the two sides of the open channel flow box; the ultrasonic signal processor equipment is respectively connected with the corresponding ultrasonic transducer groups and is used for processing ultrasonic detection signals of the ultrasonic transducer groups to obtain first flight time and second flight time; and the microcontroller is used for receiving the n groups of first flight time and second flight time and calculating the n groups of first flight time and second flight time based on a configured dynamic model to obtain an open channel flow value. Therefore, open channel flow detection is realized. 本申请公开了一种明渠流量的测量装置，包括用于置于明渠内的明渠流量箱、n层交叉布置的超声换能器组、n组超声波时间信号处理设备和微控制器。每个超声换能器组布置在明渠流量箱的两侧；超声波信号