| At present,domestic manual mower cannot satisfy the needs of modern society for the lawn mowing,automatic lawn mowers will be the development trend of the future.Automatic lawn mower can maintence for urban lawn,golf courses,public green space,park lawn,private green trim.People can be free of cutting grass from repetition,boring work environment.It can beautify the lawn and meet the special needs of users.Papers have investigated the current situation of the study of automatic lawn mowers at home and abroad,developed a kind of automatic lawn mower for lawn beautification.The lawn mower has automatic planning path,unattended,automatic control,convenient operation and energy-saving advantages,overcomes the low efficiency,the big noise,traditional lawn mower shortcomings,and the environmental pollution.Paper main work is listed as follows:First,in accordance with the need of automatic lawn mowers achieve beautification function analysis,designed the structure and control scheme of automatic lawn mowers.Then,in the mechanical structure design,according to the wheel diameter,the width and height of the body parameters of automatic lawn mowers,designed the tool lifting suspension structure,the transmission mechanism of the body.Using software for automatic lawn mower for 3d modeling,and analyze the key parts of automatic lawn mower for optimization of system design.Second,in the measurement system,according to the automatic lawn mower need coordinate positioning function on the lawn,put forward using the triangulation measurement method,design the application of laser as a lawn mower platform range finder,developed a lawn mower coordinates display module,the lawn mower obstacle avoidance module,solved the lawn mower coordinates on the lawn and obstacle avoidance.Finally,in the control system,according to the lawn mower to achieve beautification function of the lawn,developed the platform of the control system of automatic lawn mower.The design of the stepper motor control module,wireless communication module and power supply module,and realized the trajectory motion control of automatic lawn mower,achieving the basic functions of beautification. |