The intelligent lighting system designed in this scheme can set the desired light intensity, color temperature and special lighting effect through the man-machine interface. When the remote controller sends the control demand to each LED dimmer, the LED can be automatically completed by the dimmer. The regulation is to form the lighting environment required by the user and achieve the effect of energy saving. According to the actual measurement, the LED lighting control system can realize the intelligent regulation of the LED lighting system with high cost performance and improve the energy utilization efficiency. 0 Preface The new generation of green environmental protection light source represented by LED has been gradually popularized and applied in recent years. People's requirements for efficient control of LED lighting, diversification of functions, and individualization are also increasing. How to create a light environment corresponding to a specific scene according to user needs, improve lighting efficiency and reduce energy waste is an important part of LED intelligent control system research. Communication is an important part of the LED intelligent control system. At present, there are traditional light sources or LED lighting control systems using wired network technologies such as DALI, C-Bus, DMX512, Ethernet, and wireless network technologies such as ZigBee and GPRS. However, the LED control system based on the above communication method is in the control protocol. There are certain deficiencies in terms of openness, data transmission reliability, security, equipment hardware costs, and operating costs. RF4CE is an RF remote control standard for the home appliance industry jointly proposed by the ZigBee Alliance and the RF4CE Alliance in 2009. Its goal is to eventually replace the widely used infrared remote control technology. RF4CE is a network layer and application layer protocol based on IEEE802.15.4 physical layer and MAC layer. It has non-line-of-sight transmission, two-way communication, ultra-low power consumption, good interoperability, and free ISM frequency band. It can be used as home automation. An important wireless communication platform for entertainment applications. In view of the shortcomings of the existing LED lighting control system, this project designed a set of interactive, reliable, economical and practical LED intelligent lighting system based on RF4CE RF remote control standard, which can pass the LED lighting system for home and public places. Network control, to achieve the various lighting environments that users expect, and to achieve energy saving and consumption reduction. 1 overall system structure The LED lighting control system consists of a remote control and a high-power LED dimmer. Both sides are connected wirelessly through the CC2530 module with built-in RF4CE protocol. Figure 1 shows the device structure of the LED control system. The user inputs the control command by using the remote control button, and the command is sent to the dimmer in the form of a data packet conforming to the RF4CE protocol. The dimmer generates three sets of PWM outputs of R, G, and B according to the command requirements, combined with the current working state, and controls the red, The power of three high-power LED lights, green and blue, forms the desired light intensity or color temperature effect. The EEPROM in the dimmer is used to store the PWM sequence (ie recipe table) for the particular lighting effect. 2 hardware circuit Figure 2 shows the hardware schematic of the remote control main control circuit. The remote control uses the STC89C52 as the main controller, and the peripheral includes 8 operation buttons and 1 status indicator. The STC89C52 is connected in series with the CC2530 module. To save power, the STC89C52 and CC2530 are normally in a sleep state. When any of the 8 buttons is pressed, in addition to causing the corresponding port line in the P2 port to be low, an external interrupt is generated by the conduction of the corresponding diode. The MCU wakes up from sleep and immediately sends the key value corresponding to the button. CC2530 uses the serial port interrupt to wake up, and sends the key value sent by the master microcontroller to the LED dimmer in time. Figure 3 shows the hardware schematic of the CC2530 module. The CC2530 in the figure is a wireless SoC chip from TI. It integrates an 80C51 microprocessor, an IEEE 802.15.4 RF transceiver, a large-capacity memory and a rich interface component. It can be easily implemented by loading the ZigBee and RF4CE protocol stacks. Typical application based on two protocols. The CC2530 requires only a small number of peripheral components. Among them, the antenna section has a great influence on the wireless communication performance. Therefore, component selection and PCB plate making must strictly comply with the precautions in the manual. Figure 4 shows the hardware schematic of the dimmer's main control circuit. In order to generate independent 3-channel high-frequency PWM, the single-clock cycle enhanced 51-core single-chip STC12C5410AD is used, and the working speed under the same crystal condition is 8~12 times faster than that of the ordinary 51 single-chip microcomputer. The STC12C5410AD and CC2530 modules are also connected in series. The three PWM outputs are connected to the PWM dimming inputs of the R, G, and B LED drivers. The AT24C64 is an 8-Kbyte serial EEPROM memory that is connected to the virtual I2C interface of the microcontroller via SCL and SDA for storing the scene recipe table.
Advantage
* Nova MSD 300 sending card and Nova mrv328 receiving card
* Cabinet size:640x1920mm
* Kinglight/Nationstar LED Lamp, Refresh rate:1920-3840hz
* High brightness up to 2000cd/sq.m, even in the sunlight conditions can see clear, but low power consumption to save the electric power cost.
* High debugging brightness and no damage to gray scale, achieving the debugging technology for nice image.
* Passed the TÃœV,FCC,ROHS,CE cetification.
Poster LED Display,Poster Led Display,Mirrior Led Display,Led Poster Display Guangzhou Chengwen Photoelectric Technology co.,ltd , https://www.cwleddisplay.com
1. Utra Thin and Light weight, Cabinet weight only 19KG and 86mm thickness.
2. In direct sunlight, the outdoor LED Display can be high-definition and high-brightness, high refresh rate, high contrast
3. Can withstand high and low temperature, can be used in extremely harsh environment
4. Modular design, Front and Rear maintenance system available, Separate and exchangeable power and data unit can be easily removed for easy maintenance
5. Outdoor IP65 is waterproof, dustproof and corrosion proof, ensures smooth and reliable operation under variable and extreme weather conditions.