Abstract: Abstract: The open-loop control technology of light source products can easily cause an increase in electricity consumption and environmental pollution. This article designs a new type of lighting control system, which overcomes the shortcomings of traditional lighting control systems with relatively scattered control, chaotic management, and low automation level. At the same time, it saves energy, avoids unnecessary waste, and provides a more intelligent environment for people’s production and life. 1. Preface: Currently, lighting electricity consumption in China accounts for 20% -30% of building electricity consumption. The scene controllers and dimming products produced by intelligent lighting electrical companies basically use open-loop control, turning on the light source and adjusting the output of light according to regional requirements, which is difficult to achieve

Abstract: The open-loop control technology of light source products can easily cause an increase in electricity consumption and environmental pollution. This article designs a new type of lighting control system, which overcomes the shortcomings of traditional lighting control systems with relatively scattered control, chaotic management, and low automation level. At the same time, it saves energy, avoids unnecessary waste, and provides a more intelligent environment for people’s production and life

1. Preface: Currently, lighting electricity accounts for 20% -30% of building electricity consumption in China. The scene controllers and dimming products produced by intelligent lighting electrical companies mostly use open-loop control, turning on the light source and adjusting the light output according to regional requirements. This makes it difficult to achieve the most reasonable illumination in the environment. Usually, after adjusting the illumination level, the illumination will not be changed according to the light intensity of the environment. This unreasonable light source control method increases electricity consumption and causes a lot of pollution. Wireless sensor network technology is one of the most influential technologies in this century. If wireless sensor technology is applied to lighting control systems, it will not only greatly reduce costs, but also save resources and avoid unnecessary waste

The lighting control system proposed in this article mainly utilizes short distance wireless communication and CAN bus technology. 3500/93 135785-01 is applied to small environment light source lighting control, consisting of wireless communication base stations, wireless communication slave stations, and terminal nodes. This scheme is suitable for small environment light source control, overcoming the shortcomings of traditional lighting control systems with low automation, chaotic management, and relatively dispersed control, and providing a more intelligent environment for people’s lives

2. Principle and Technology This research scheme is mainly applied to short distance wireless communication technology and CAN bus technology. Among them, short distance wireless communication technology uses low-power short distance wireless communication technology, and nRF905 wireless RF transceiver chip. The wireless communication base station is composed of STC89C52 and nRF905 wireless transceivers STC89C52 is a control chip used to modify the base station, which is used to generate control signals and respond to the status returned from the station to ensure the normal operation of the lighting source; The nRF905 wireless transceiver is a base station signal sending device that completes the transmission of control signals and the reception of lighting source status signals sent by the slave station through nRF905

2.1 Short distance wireless communication With the continuous development of communication and information technology, the application pace of short distance wireless communication technology is accelerating and becoming increasingly mature. In general, as long as the communication transmitter and receiver transmit information through wireless waves and the transmission distance is limited to a relatively short range (tens of meters), it can be called short distance wireless communication

The working frequency band of short distance wireless communication technology is the ISM frequency band. 3500/93 135785-01 uses this frequency band without any license, usually only requiring transmission of no more than a certain power (usually less than 1W), as long as it does not interfere with other frequency bands. Currently, common short distance wireless communication is often used in the following ISM frequency bands: 27MHz frequency band; 2.4GHz frequency band and 315MHz; Frequency bands such as 433MHz and 868MHz

2.2 CAN bus CAN bus is a serial data communication protocol developed by BOSCH in Germany in the early 1980s to solve the data exchange between numerous control and testing instruments in modern automobiles. It is a multi master bus, and the communication medium can be twisted pair, coaxial cable, or optical fiber. The communication speed can reach 1MBPS CAN bus is an internationally standardized fieldbus with many characteristics such as high communication speed, easy implementation, and high cost-effectiveness. It is one of the most promising fieldbuses

3. Component selection: The equipment used in this plan is mainly PHILIPS semiconductor production PCA89C250 transceiver SJA1000 controller and Norwegian Nordic nRF905 wireless transceiver

PCA82C250 is the physical interface of the CAN controller, whose main function is to provide differential transmission signals to the BUS and differential reception signals to the CAN controller. The chip uses 5V DC power supply, and PCA82C50 is designed for high-speed communication applications in automobiles, in accordance with the ISO11898 standard

SJA1000 is a type of independent controller commonly used in the field of automation to control regional network control

The main difference between SJA1000 and the controller Basic CAN is that SJA1000 provides Pelican’s new operating mode, in which the CAN bus complies with all CAN2.0B protocols