Research On Greenbelt Automatic Irrigation System Powered By Solar Energy

With the increase of population in Chinese urban, the requirements of urban living environment have been increased correspondingly.And urban green space play a very important role in improving the living environment. In the traditional green irrigation.the main way is mostly artificial watering.This irrigation would be a waste of manpower and water, according to statistics、80%of the waste of water resources is caused by artificial irrigation.In recent years,the way of green irrigation has phased automatic irrigation,but automatic irrigation equipment is still dependent on the City’s network to provide electricity, which has increased the electricity load of the city network,and some irrigation areas can not use city network power supply.In this paper, the solar photovoltaic green automatic irrigation system is put forward,and the system power consumption comes from solar energy. The use of fuzzy control technology in green automatic irrigation, water-saving irrigation and energy-saving irrigation are realized compared with the traditional artificial irrigation. The main research work is as follows:1) analysis of demand for electricity of the the green irrigation,present of the structure for solar independent power supply part.mainly including:solar tracking module, the main circuit of the power supply and control circuit of power supply.2) To improve the power generation efficiency of the power supply part, the pole shadow type, intermittent solar automatic tracking mode is studied. Contrast test is carried out between automatic tracking prototype and solar panels in the best angle of36°, the output power increased by33.04%.The maximum power point tracking algorithm to achieve maximum power output of the control algorithm using matlab simulation of solar panels.3) In order to solve the instability of solar which result in the problem that green irrigation can not irrigate as required, a irrigation named water and energy storage is put forward to meet the demand for irrigation of green space when lack of solar and achieve energy conservation of the irrigation process in the way of the conversion from solar energy to water potential energy. 4) Based on soil water, the algorithm of automatic irrigation based on fuzzy control is studied,and realized through hardware circuit and simulation debugging in Matlab. irrigation results are proved to accord with the objective reality.5) Verified the whole system performance through a set of comparative tests. In the actual operation in a summer day, Solar cell output power of this system relative to the control group increased. The results after solar green automatic irrigation system has a certain reference value.