LED Intelligent Lighting Control System Based On PoE Technology

With the advent of the Internet era and the rapid development of network technology,Ethernet has extended to every corner of the world.People began to try to use a network cable to solve both the communication problem and the power supply problem.As a result,Power Over Ethernet?PoE?has gradually become a new direction in the field of lighting power supply.PoE refers to a technology that transmits data signals to some IP terminal devices and provides DC power supply within a certain low power range for some IP terminal devices without any changes in the existing twisted-pair wiring infrastructure.A complete PoE system includes two parts:Power Sourcing Equipment?PSE?and Powered Device?PD?.The PSE is a device that provides power to the Ethernet client and is also the manager of the entire Power over Ethernet process.It is a network infrastructure device such as an Ethernet switch and hub with built-in PoE function^[1].PD is a device that uses power,that is,the power receiving end device of the Ethernet system.PoE-powered lighting technology provides safe power supply,saves space and costs,improves energy efficiency,solves the problem of flicker in traditional lighting,and is easy to combine with the Internet of Things?IoT?technology.This topic mainly designs and studies the LED intelligent lighting control system based on PoE.First,this article analyzes the current research status of PoE lighting technology,intelligent lighting control technology,and cloud platform technology at home and abroad,expounds the advantages of PoE-based lighting technology,and points out that the research of PoE-based LED intelligent lighting systems in smart buildings has a bright future.Secondly,a new concept of LED lighting IoT system based on PoE is proposed,the related standards of PoE technology,power supply methods and power supply working process are introduced,and the overall system architecture is designed based on a series of requirements analysis.The system-related communication technology,single-chip technology and cloud platform are introduced.Secondly,because of the control of the outdoor sky light distribution law,it is equivalent to indirectly mastering the control strategy of indoor illuminance compensation.By adjusting the indoor illuminance through the dimming method of indoor LED lighting,the indoor illuminance can be adjusted.This paper uses the support vector machine?SVM?algorithm to study the prediction of indoor illumination from outdoor illumination and the prediction of unknown room illumination from known room illumination.Then,an indoor illumination prediction model based on vector machine was established,and various data required by the prediction model were collected.Finally,illuminance prediction training was conducted,and the simulation results confirmed the feasibility of the algorithm.This research work has a guiding significance for indoor constant illumination adjustment.Secondly,the hardware system architecture and intelligent lighting control strategy of the system are designed.First,choose the appropriate PoE switch.Then design the array type LED controller,the controller selects STM32F103RET6 microcontroller as the microcontroller,designs the MCU control circuit,PWM dimming circuit,Ethernet communication module circuit,LED lighting design circuit and other circuits.Finally,the control strategy of the system is designed and studied,and the system is tested.Finally,the system's host computer software is developed and designed.Based on the B/S architecture,the cloud platform solution JavaEE is used to design and develop the system platform software.Its contents mainly include user registration,building information management,sensor data collection,and lighting.Control management.Web development uses Java language,combined with front-end development environments?Bootstrap and Layer?,back-end development environments?Springboot,mybatis and Shiro?,and database environment?mysql?,introduces the Web client page display and usage methods.