智能控制城市道路LED照明驱动系统的设计与实现
发布时间：2018-08-11 10:24
【摘要】：城市美化的发展推动着城市LED照明技术的演变和改进。随着大功率集成电路技术的发展,同时依赖于集成电路技术的改进和芯片设计加工能力的提升,LED路灯驱动器的也逐渐趋于集成化、小型化、模块化。论文对LED驱动器的演变,发展进行详细的阐述和分析。并阐述了目前大部分LED路灯智能控制驱动器的系统结构、系统硬件电路的工作原理以及硬件电路的设计方法,并对模糊控制算法的进行分析和理解。论文设计的城市LED路灯智能控制驱动器系统,结合软件和硬件的优势,利用微处理器的控制能力,使LED路灯的控制能够实现智能化。论文中硬件部分主要包括有声敏,光敏传感器采样电路,微处理器外围硬件电路,LED恒流驱动硬件电路。而外部的日照和交通流检测控制电路通过外部的声敏和光敏传感器采集周围环境的实时变换数据,并通过转换电路转换成为电压和电流数据输入到微处理器内部,通过数据转换程序将微处理器内部存储的数据转换为模拟电压量,得到LED恒流驱动芯片的调光信号,从而实现智能化的调节路灯的发光亮度,进而达到节约能源和最大程度地满足照明需求。在恒流驱动上,论文采用DC-DC的恒流驱动结构保证输出电流的精度。结合硬件的设计,在软件设计上,论文采用模糊控制的算法实现对LED路灯的智能控制,将外部的声音和亮度分为相应的5个等级,针对相应的等级分配固定的值,并在此基础上进行模糊控制规则的设计和模糊控制程序的编写。本论文使用Simulink工具完成了系统的建模和仿真同时完成LED路灯智能控制驱动器系统调试,从测试的结果看出,对光强度进行模糊控制规则的等级划分,对应0.2V,1V,1.6V时LED恒流驱动芯片输出不同的电流,实现调光功能。对声音强度,对应划分0.4V,1.2V,1.6V也可以得到不同的恒流驱动芯片输出的不同电流,实现智能调光作用。
[Abstract]:The development of urban beautification promotes the evolution and improvement of urban LED lighting technology. With the development of high power integrated circuit technology and the improvement of integrated circuit technology and the improvement of chip design and processing ability, the LED street lamp driver is becoming integrated, miniaturized and modularized. In this paper, the evolution and development of LED driver are described and analyzed in detail. The system structure, the working principle of the hardware circuit and the design method of the hardware circuit of the LED street lamp intelligent control driver are described. The fuzzy control algorithm is analyzed and understood. The intelligent control driver system of city LED street lamp designed in this paper combines the advantages of software and hardware and makes use of the control ability of microprocessor to realize the intelligent control of LED street lamp. The hardware of this paper mainly includes sound sensing, Guang Min sensor sampling circuit, microprocessor peripheral hardware circuit and LED constant current drive hardware circuit. The external sunshine and traffic flow detection control circuit collects the real-time transform data of the surrounding environment through the external sound sensor and Guang Min sensor, and converts the data into the voltage and current data to input into the microprocessor through the conversion circuit. The data stored in the microprocessor is converted into analog voltage through the data conversion program, and the dimming signal of the LED constant current drive chip is obtained, so that the luminance of the street lamp can be adjusted intelligently. Then it can save energy and meet lighting requirements to the greatest extent. In the constant-current drive, the DC-DC constant-current drive structure is used to ensure the accuracy of the output current. Combined with hardware design and software design, the paper uses fuzzy control algorithm to realize the intelligent control of LED street lamp, divides the external sound and brightness into five corresponding grades, and assigns the fixed value to the corresponding grade. On the basis of this, the design of fuzzy control rules and the programming of fuzzy control program are carried out. In this paper, the modeling and simulation of the system is completed by using Simulink tool, and the debugging of the intelligent control driver system of the LED street lamp is also completed. From the test results, it can be seen that the fuzzy control rules of the light intensity are classified. The output current of LED constant current drive chip is different when the voltage is 0.2V / 1V / 1.6V, and the dimming function is realized. For sound intensity, the output current of different constant-current drive chips can be obtained by dividing 0.4V / 1.2V / 1.6V and realizing the function of intelligent dimming.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU113.666
本文编号：2176724
[Abstract]:The development of urban beautification promotes the evolution and improvement of urban LED lighting technology. With the development of high power integrated circuit technology and the improvement of integrated circuit technology and the improvement of chip design and processing ability, the LED street lamp driver is becoming integrated, miniaturized and modularized. In this paper, the evolution and development of LED driver are described and analyzed in detail. The system structure, the working principle of the hardware circuit and the design method of the hardware circuit of the LED street lamp intelligent control driver are described. The fuzzy control algorithm is analyzed and understood. The intelligent control driver system of city LED street lamp designed in this paper combines the advantages of software and hardware and makes use of the control ability of microprocessor to realize the intelligent control of LED street lamp. The hardware of this paper mainly includes sound sensing, Guang Min sensor sampling circuit, microprocessor peripheral hardware circuit and LED constant current drive hardware circuit. The external sunshine and traffic flow detection control circuit collects the real-time transform data of the surrounding environment through the external sound sensor and Guang Min sensor, and converts the data into the voltage and current data to input into the microprocessor through the conversion circuit. The data stored in the microprocessor is converted into analog voltage through the data conversion program, and the dimming signal of the LED constant current drive chip is obtained, so that the luminance of the street lamp can be adjusted intelligently. Then it can save energy and meet lighting requirements to the greatest extent. In the constant-current drive, the DC-DC constant-current drive structure is used to ensure the accuracy of the output current. Combined with hardware design and software design, the paper uses fuzzy control algorithm to realize the intelligent control of LED street lamp, divides the external sound and brightness into five corresponding grades, and assigns the fixed value to the corresponding grade. On the basis of this, the design of fuzzy control rules and the programming of fuzzy control program are carried out. In this paper, the modeling and simulation of the system is completed by using Simulink tool, and the debugging of the intelligent control driver system of the LED street lamp is also completed. From the test results, it can be seen that the fuzzy control rules of the light intensity are classified. The output current of LED constant current drive chip is different when the voltage is 0.2V / 1V / 1.6V, and the dimming function is realized. For sound intensity, the output current of different constant-current drive chips can be obtained by dividing 0.4V / 1.2V / 1.6V and realizing the function of intelligent dimming.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU113.666
【参考文献】
相关期刊论文 前1条
1 贺一鸣;王崇贵;刘进宇;;智能路灯控制系统设计与应用研究[J];现代电子技术;2010年01期
，本文编号：2176724
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