摘要
在某些应变测试系统中,既要求体积小,功耗低,还要求实现实时显示,这样系统就必须具有较高的数据传输速度和更加灵活的通道选择及采样方式,本文介绍了用FPGA硬件实现上述要求的方法.用FPGA来实现主控逻辑模块.FPGA经过一系列的逻辑和时钟运算,按照用户的设置要求将命令逻辑解串并发送到单片机及模拟电路.单片机采集到的数据保存到FPGA内部的FIFO里,当达到FIFO余度值时,计算机取走采集到的数据进行显示和存储.实验结果表明,系统工作稳定,控制方便,能得到可靠的实验数据.
In some of the strain measurement systems, not only the characteristics of small volume and low consumption, but also the function of multi channel sampling is demanded, so the system must have a more flexible channel selection and sampling methods. The paper presents the use of FPGA hardware implementation methods for achieving these requirements. FPGA is used to control the logic module. Through a series of logic and clock operations in FPGA, command logic is deserialized and sent to a microcontroller and the analog circuits according to the requirements of the user＇s settings. The data collected by the microcontroller is saved into the internal FIFO in the FPGA. When the FIFO reaches the value of redundancy, the computer removes the collected data for display and storage. The experimental results show that the system is stable, easy to control, and has obtained reliable experimental data.
出处
《测试技术学报》
2012年第2期158-161,共4页
Journal of Test and Measurement Technology
