Design Of Solar Automatic Tracking Control System

With the rapid development of the world economy, that mankind’s demand for resources isincreasing year by year results in depleting of the traditional resources. The energy crisis hasbecome a problem that human have to face. Many countries have turned to find renewable resources,while with its unique advantages, the solar energy stands out other resources. Nowadays, the solarenergy has been used in many fields, such as solar power. However, in tracking precision andintelligent control, most of the solar tracking devices exist some problems. Especially in the aspectof intelligent control, the tracking device still works in the way of controling itself. This way is notconducive to extend the function of system, but also go against clustering control in large-scale.Inaddition, designers also don’t make full use of the advantages of the Internet to realize the functionof monitoring the system in remote.By analyzing the defects of the existing control strategies, NRF905, a wireless transceiver chip,is used to realize the function of one master controling all the slaves and realize controling thetracking devices in large-scale. In addition, the master is designed as a Web server and is connectedto the Internet, users can control and monitor the system in remote. In sum, the design is dividedinto three parts:1. the research of solar tracking strategyBy comparing the current solar tracking strategies, the way of tracking with sun’s movement,having strong anti-jamming, is chosen, and at the same time, tracking coordinate system is alsoresearched, which decides the calculation method of sun’s position.2. the design of wireless communicationIn consideration of the requirement of point to multi-point communication, the design builds asmall wireless communication network. And according to the actual needs of application, thenetwork topology of the system and the communication protocol and the format of the data framesare designed elaboratly. The most important is that the problem of data collision is solved.3. the design of the embedded Web serverAccording to the characteristics of the embedded system, the TCP/IP protocol stack issimplified. The master is connected to the network, then the users can interact with the serverthrough the browser, as that, the master is controled easily in remote by us.After completing and enriching the system, the system is tested, the test results indicate thatthe system can track the sun accurately, and it also proves the feasibility of realizing the Web serveron microcontroller, stability and practicability of the whole system. The system has potential replication in application of smart hourse.