Research And Design Of LED Intelligent Lighting System For Underground Parking Lot Based On LoRa

With the increasing number of car ownership,due to the restrictions of urban land resources,the construction of modern urban parking lots is increasingly moving towards the underground parking lot.The underground parking lot controlled by traditional lighting relies on incandescent or fluorescent lamps or energy-saving lamps to reduce energy consumption,causing a great waste of energy and giving people a very poor comfort in parking lighting environment.In view of the above problems,this paper comprehensively uses LED drive control technology,LoRa wireless communication network technology and embedded application technology,and at the same time,combined with the control strategy of comfortable lighting.An intelligent LED lighting scheme for wireless communication was proposed,and an LED intelligent lighting system based on LoRa underground parking lot was designed to make the lighting of the underground parking lot more energy-saving,intelligent,comfortable and healthy.First of all,the paper describes the research background and significance of the subject,further,summarizes and analyzes the research and development status of intelligent lighting system,underground parking lot lighting and LoRa wireless communication.After the system requirements analysis and analysis of various programs,the overall structure and design of the system are established.Secondly,aiming at the application scenario of the underground parking lot environment,this paper proposes a fuzzy control evaluation method,establishes the evaluation model of lighting comfort and designs fuzzy inference rules.Achieving a lighting comfort control strategy for underground parking from qualitative to quantitative research.According to the analysis of system function requirements,this paper describes the hardware design of the system from the hardware perspective of implementing system functions.It includes the hardware circuit design of LED lighting module,transition lighting module,parking space detection module,etc.The design of the control circuit of each hardware module,the sensing circuit of peripheral equipment and the circuit of LoRa wireless communication module are also introduced here.In addition,from the software perspective of implementing system functions,the design and application functions of the system software are described,including the design of PC software,LoRa communication and gateway application software,and embedded software.Here also introduces the application function of the PC software designed by the system in monitoring the data of each module of the display system and the remote management and control of the system;The system LoRa communication gateway and LoRa terminal node networking,and the software design of the LoRa wireless communication network for establishing the system;and the terminal nodes of each module are designed for implementing embedded software applications of various functions of the system.Finally,this paper carries out the integrity test of the embedded application software such as the host computer,LoRa communication gateway and terminal nodes of the LED intelligent lighting system in the underground parking lot,based on the system hardware experiment platform.The test verified that the functions of the system design met the expected design requirements and completed the system design.The LED intelligent lighting system based on LoRa wireless communication method designed in this paper has certain reference significance for the research work of intelligent lighting in underground parking lot in the future.