As the contradiction between global water supply and demand water supply increases, the precise irrigation of golf course lawns must also be implement on time irrigation, on demand irrigation, and through the scientific efficient method. This is not only realizing the precise irrigation and water saving but also to improve the level of management, and reduced the management cost. Therefore, the preciseness, efficiency, comprehensiveness, and scientific management of golf course lawn irrigation will contribute to healthy development of golf course. In response to this appeal, our company has developed a wireless intelligent watering system for the golf course. It is an all weathered, unattended, and fully automated watering system, designed for golf course green belts. The system is mainly composed of wireless sensors, weather stations, smart dome cameras, smart gateways, wireless solenoid valves controller and the other equipment.
Golf irrigation system design differs from other irrigation system designs in many ways. Golf courses generally have a large lawn area (400,000-570,000 square meters), which has its own unique characteristics. The nozzle pressure is high (0.4-0.55MPa), and the irrigation time is only 4-8 hours a day. For example, the size of the stadium, geographical location, climate conditions, etc., so there are still many problems in actual operation.
The areas that require sprinkler irrigation on golf courses include: greens, tee boxes, fairways, and rough areas (including flowers, grass, shrubs), etc. Among them, greens, tee boxes, and fairways need to be irrigated periodically, and greens require more periodic watering among the three. The design of the golf course sprinkler system will directly affect the quality of the golf course lawn and the overall environmental effect of the surrounding environment.
Sprinkler irrigation system design components
Sprinkler irrigation systems can be mainly divided into three categories according to different operating methods: ① Fully automatic system; ② Semi-automatic system; ③ Manual system. The current golf courses in our country are basically dominated by the latter two types. The general sprinkler irrigation system design consists of: ① water source; ② pumping station; ③ water delivery system (pipe network design); ④ control valve; ⑤ sprinkler head. Fully automatic control systems include wired and wireless.
Basis for designing sprinkler irrigation systems
The design basis indicators of the sprinkler irrigation system include: ① The maximum daily water consumption of the lawn under specific circumstances; ② The zoning of the sprinkler system; ③ The number of hours of sprinkler irrigation per day; ④ The frequency of sprinkler irrigation; ⑤ The topography and climate conditions of the sprinkler irrigation area and the prevailing wind direction and intensity throughout the year wait.
Application of Internet of Things Technology
A modern sprinkler irrigation system should have the soil moisture sensors, and weather stations that transmit the information to cloud platform. This cloud platform can automatically adjust the required sprinkler irrigation cycle based on the given data. It can automatically open and close the valves, and applied the automated management of the entire system. This system greatly saves the manpower, and saves our fresh water resources.
Sprinkler irrigation system design
Real-time:Here the user can monitor the air temperature, humidity, wind speed, wind direction, rainfall, light intensity, ultraviolet radiation, soil moisture content, soil nutrient, and the other information anytime, any where, through the mobile phone app, computer client. Therefore, based on this information, and the advance setting, cloud platform transfer the data. The upper and lower limit automatically send the instructions to the control panel to regulate the action of water valves for irrigation and also the manual control method.
Real-time: The system uses wireless sensor network technology to monitor golf course lawns in real time, making the arrangement of sensor nodes flexible, convenient and easy to implement. The nodes are all battery powered and can be buried under the turf.
Intelligent: The system can automatically control the amount of watering, actually depends on the meteorological information, soil moisture contents, and the lawn water requirement in different seasons. It can perform the different amount of watering, according to the planting requirements, and terrain to keep keep the soil moisture at optimal level, which is required for crop growth and within the precise amount.
Efficient water saving: The system can intelligently irrigate lawns, according to the soil moisture distribution and the topography. The system adopts the curve irrigation mode, here the amount of water decreases in a curve, as the time and soil moisture increase, and saves the water resource.
Soil nutrient monitoring: Based on the data returned by the soil nutrient tester, the monitoring and management center can monitor the soil nutrients in the stadium at any time to determine whether fertilization is needed.
Pipe network monitoring: Based on the water pipe pressure sensors arranged on the pipe network, through monitoring, accidental water leakage points can be discovered in time, and the water supply pump can be automatically shut down to reduce property losses.