As the pace of China's economic and social development continues to accelerate, the energy crisis has gradually become an important factor restricting the sustainable development of China's economy and society. Therefore, China is paying more and more attention to the development and utilization of renewable resources, and will increase the development and utilization of renewable resources as a major measure to promote the process of economic and social development. At present, as a clean and efficient renewable resource, solar energy is widely used in the field of lighting. On the one hand, it realizes the efficient utilization of solar energy resources and solves the problem of energy shortage; On the other hand, it also effectively optimizes the energy structure and reduces environmental pollution. However, the traditional solar street lamp automatic control system can not monitor the solar panel and has no common fault display and detection functions, which directly affects the normal operation of the street lamp control system. Therefore, this paper proposes an automatic control system for this problem, which can automatically detect common faults and display common fault points.

1 Working principle

The automatic control system samples and detects the battery voltage, battery voltage and lamp head branch current of the solar street lamp with the help of the microprocessor chip, and reasonably regulates the input and output of the battery according to the statistical display of each point, thus realizing the storage

Integration of lithium battery charging, discharging and temperature compensation. In the actual operation process, the solar street lamp automatic control system controls the working state, working mode and common fault location of the system in real time through the control software, and the common fault processing efficiency is high. This automatic control system for solar street lamps is based on a microprocessor, and users can directly input the basic parameters of the relevant system into the system. The microprocessor adjusts the voltage and current of the battery according to the basic parameters set by the system, and sends out input and output signals in time

2 Hardware system design

2.1 The hardware system and its design system adopt a single ATMEL microprocessor chip, which can effectively improve the storage space of the system. At the same time, it is equipped with a high-precision, highly intelligent oscillator and a watchdog reset point to realize real-time monitoring of system exceptions. During charging and discharging control, the system must be operated through remote special equipment, and send corresponding control commands to transmit electronic signals to each system structure.