1.安康学院 电子信息技术研究中心 安康 725000; 2.安康学院 数学与统计学院 安康 725000
TN06
陕西省教育厅科研项目(14JK1018)、安康学院研究项目（JG08103）资助
1.Electronic Information Technology Research Center, Ankang University, Ankang 725000, China;2.School of Mathematics and Statistics, Ankang University, Ankang 725000, China
为了采用FPGA技术开发出低成本的温度测量系统，通过分析数字温度传感器DS18B20的单总线通信协议，严格按照传感器的通信时序要求，使用有限状态机（FSM）设计出了DS18B20的单总线通信控制器（IP核）。并以此单总线控制器为核心在EP2C8Q208C8 FPGA开发板上开发出了完整的温度测量与显示系统，最终的测试结果表明，所设计的单总线控制器不但能够稳定驱动DS18B20进行温度参数的测量，而且在FPGA片上构建的测温系统硬件实现代价低至了410个逻辑单元、完成一次温度测量的用时也只有754.7 ms。
In order to develop a low cost temperature measurement system based on FPGA, through analyzing the 1wire bus communication protocol of digital temperature sensor DS18B20 in this paper, strictly according with the communication timing requirements of sensors, the 1wire bus communication controller (IP core) had been designed with finite state machine (FSM). Moreover, the 1wire bus controller core and other modules form a complete temperature measurement and display system on EP2C8Q208C8 FPGA development board, the final test results show that the 1wire bus controller not only can drive the DS18B20 stably to measure the temperature, and the temperature measurement system based on FPGA in the hardware implementation cost low to 410 Logic Elements (LEs), a temperature measurement time only 754.7ms.
王庆春,何晓燕.基于FPGA的数字温度计设计[J].国外电子测量技术,2017,36(4):94-98
复制
