when spraying robot working, it is not easy to get the width of spraying swath, the edge of spraying swath and the duplication and leakage dimension and the robot and the towing carriage can not be seen after test .

In order to reduce the pesticide waste and deficient spraying during the spraying process, this article set up the ultrasonic system to measure the safe distance before the spraying robot walking into the spraying field.

Effect of New Motor-boom-sprayer on Control Helicoverpa armigera;