基于FPGA和LM75A的测温系统设计  

Design of Temperature Measurement System Based on FPGA and LM75A

作　　者：刘欢[1] 欧伟明[1] 陈财彪 周志伟[1] 

机构地区：[1]湖南工业大学电气与信息工程学院,湖南株洲412007

出　　处：《湖南工业大学学报》2014年第4期25-29,共5页Journal of Hunan University of Technology

摘　　要：设计了一种基于FPGA和LM75A的温度测量系统。硬件设计上,系统以EP4CE15F17C8N为主控芯片,采用数字温度传感器LM75A检测环境温度,并利用LM75A自带的IIC总线接口传输数据,通过数码管将温度实时显示出来;软件设计上,采用自顶向下模块化设计思想,先设计出IIC通信模块、温度显示模块,然后再编写顶层模块,将2个模块整合。试验结果表明,本系统测温精确,且运行稳定。Designs a temperature measurement system based on FPGA and LM75 A. The design of hardware uses EP4CE15F17C8 N as the main controlling chip, and applies the digital temperature sensor LM75 A to test the environment temperature and the LM75 A own IIC bus interface to transmit data, displaying the temperature via the Digital tube in real time. The software design, using the idea of top-down modular design thought, first, designs a IIC communication module and a temperature display module, and then, programs the top-level module and makes the modules integration. The practice results show that the system is precision in measuring temperature and operates stably.

关 键 词：温度采集 FPGA LM75A EP4CE15F17C8N IIC总线 

分 类 号：TH811[机械工程—仪器科学与技术]