基于FPGA和DS18B20的温度光栅的波长标定方法
发布时间：2019-06-21 09:51
【摘要】：提出了一套基于FPGA(fiber-Bragg-grating)和DS18B20的温度布拉格光栅的波长标定方法。基于DS18B20对外界温变的实时响应特性,将数字温度传感器DS18B20与连接了光谱仪的温度光纤布拉格光栅FBG置于同一温度场中,以现场可编程门阵列FPGA(field-programablegate-array)作为数据处理和控制芯片,设计了通过串口发送智能指令对温场变化的实时监控和显示系统。方法中不需要温箱进行恒温控制,降低了FBG波长标定的成本及功耗。实验表明,标定出的波长-温度曲线线性度为0.999,测得光栅的温度灵敏度系数为9.899pm/℃,与用恒温箱测得的结果10.468pm/℃相差0.569pm/℃,在系统允许误差0.619pm/℃范围内,验证了该方法的准确性。
[Abstract]:A wavelength calibration method of temperature Bragg gratings based on FPGA (fiber-Bragg-grating) and DS18B20 is proposed. Based on the real-time response of DS18B20 to external temperature variation, the digital temperature sensor DS18B20 and the temperature fiber Bragg grating FBG connected to the spectrometer are placed in the same temperature field. Using the field programmable gate array FPGA (field-programablegate-array) as the data processing and control chip, a real-time monitoring and display system for the temperature field change by sending intelligent instructions through serial port is designed. The constant temperature control of the temperature box is not needed in the method, which reduces the cost and power consumption of FBG wavelength calibration. The experimental results show that the linearity of the calibrated wavelength-temperature curve is 0.999, and the temperature sensitivity coefficient of the grating is 9.899pm/ 鈩，
本文编号：2503986
[Abstract]:A wavelength calibration method of temperature Bragg gratings based on FPGA (fiber-Bragg-grating) and DS18B20 is proposed. Based on the real-time response of DS18B20 to external temperature variation, the digital temperature sensor DS18B20 and the temperature fiber Bragg grating FBG connected to the spectrometer are placed in the same temperature field. Using the field programmable gate array FPGA (field-programablegate-array) as the data processing and control chip, a real-time monitoring and display system for the temperature field change by sending intelligent instructions through serial port is designed. The constant temperature control of the temperature box is not needed in the method, which reduces the cost and power consumption of FBG wavelength calibration. The experimental results show that the linearity of the calibrated wavelength-temperature curve is 0.999, and the temperature sensitivity coefficient of the grating is 9.899pm/ 鈩，
本文编号：2503986
本文链接：https://www.wllwen.com/kejilunwen/dianzigongchenglunwen/2503986.html
