基于FPGA的光纤传感气体检测系统的实现

Implementation of optical fiber gas sensing detection system based on FPGA

工矿行业环境中有害气体的检测直接关系到工作人员的生命安全,传统的光纤传感气体检测系统,硬件结构复杂、抗电磁干扰能力弱,检测的气体浓度不准确。项目结合FPGA技术,利用硬件编程语言VerilogHDL设计硬件电路,替代了传统的DDS、倍频、移相等复杂硬件结构。在抗干扰性和精度上都有了很大提高,优化了传统的检测系统。

The detection of harmful gases is directly related to the lives of workers in industry and mining. The traditional optical fiber gas sensing detection system of which the hardware structure is complex, an- ti-electromagnetic interference is low. The detection of gas density is not accurate. Combining the technology of FPGA, the project uses hardware description language VerilogHDL to design hardware circuit,this de- sign can replace the traditional DDS, double-frequency, phase shifters of complex hardware structure. By comparison with conventional detection system,the anti-interference, accuracy of the new system has been greatly improved and optimized.