Spray amount distribution test control system

The utility model discloses a spray amount distribution test control system, which comprises a spray nozzle arranged on a testboard, a weighing sensor for testing the water spray amount of the spray nozzle, an electromagnetic valve bank for controlling the water flow direction and a computer and also comprises a signal conversion module for converting an analog signal into a 485 serial communication signal, a signal acquisition module for converting the 485 serial communication signal into a digital signal and a control module for controlling the electromagnetic valve bank to be opened/closed, wherein the signal conversion module is connected with the weighing sensor; the input end of the signal acquisition module is connected with the signal conversion module, and the output end thereof is connected with the computer; and the control module is connected with the computer and is connected with the electromagnetic valve bank through a signal connecting device. The utility model can restrain the drift of a generated signal and provides a real-time precision test, and thereby satisfying the detection requirements of the agriculture and plant protection science & technology research and development and the spray equipment production.