毕业设计论文-基于FPGA高性能温控调速风扇系统设计.docVIP

重庆大学本科学生毕业设计（论文） 基于FPGA高性能温控调速风扇系统设计 学生： 学号： 指导教师： 助理指导老师： 专业：光电信息工程 重庆大学光电工程学院 二O一五年六月 Graduation Design(Thesis) of ChongqingUniversity Based on FPGA High Performance Fan Design of Temperature Control System  Undergraduate:Li yao Supervisor: Prof. Pan yinsong Assistant Supervisor : Qin haiyang Major: Optoelectronic Information Engineering College of Optoelectronic Engineering Chongqing University June 2015  摘 要 温控风扇在现代社会中的生产以及人们的日常生活中都有广泛的应用，如工业生产中大型机械散热系统中的风扇、现在笔记本电脑上广泛应用的智能CPU风扇等。在现阶段，温控风扇的设计已经有了一定的成效，可以使风扇根据环境温度的变化进行自动调速，当温度升高到一定时能自动动风扇，当温度降到一定时能自动停止风扇的转动，实现智能控制。随着在各个领域的广泛应用，许多用FPGA做控制的温度控制系统也应运而生。它使风扇根据环境温度的变化实现自动启停，使风扇转速随着环境温度的变化而变化，实现了风扇的智能。 关键词：FPGA，温度控制，直流电机，PWM调速，电源设计  Abstract The fan controlled by temperature is widely used in modern society productions and people’s daily life, such as the fan of large-scale industrial production of mechanical cooling system and the CPU fan of the notebook computer which are now widely used. At present, the design of temperature control fan have a certain effect, which can make the fan speed automatically change according to the environment temperature.when the temperature rises to a certain one, it can automatically start the fan, when the temperature drops to a certain one, it can automatically stop the rotation of the fan, which achieves the intelligently control of the fan. As FPGA is widely used in various fields, many temperature control systems based on FPGA also emerge as the times require. It makes the fan according to the change of environment temperature realize the automatic starting and stopping and the fan speed varies with the temperature of the environment, which realizes the intelligent control of the fan. This design uses ALTER Cyclone-V FPGA as the controller, using the temperature sensor DS18B20 as the temperature acquisition device, and the collected temperature through the speed control algorithm with high precision will eventually be used to transmit PWM pulse signal to control L298N motor dri