激光杂志
激光雜誌
격광잡지
LASER JOURNAL
2015年
1期
82-84
,共3页
痕量气体检测%DSP%DFB激光器%驱动电源
痕量氣體檢測%DSP%DFB激光器%驅動電源
흔량기체검측%DSP%DFB격광기%구동전원
trace gas detection%DSP%DFB laser%laser driver
为了满足痕量气体检测系统对高精度激光器驱动电源的需求,基于DSP的高速运算性能,通过内环模拟反馈与外环PID控制算法相结合的双反馈模式来达到精确控制激光器驱动电流的目的,设计了一种基于DSP的 DFB 激光器驱动电源。以中心波长为1651 nm 的 DFB 激光器进行驱动性能测试,线性度达到99.996%。连续50小时不间断工作,驱动电流的波动幅度仅有0.004mA,为DFB激光器在痕量气体浓度检测方向提供了有力保障。
為瞭滿足痕量氣體檢測繫統對高精度激光器驅動電源的需求,基于DSP的高速運算性能,通過內環模擬反饋與外環PID控製算法相結閤的雙反饋模式來達到精確控製激光器驅動電流的目的,設計瞭一種基于DSP的 DFB 激光器驅動電源。以中心波長為1651 nm 的 DFB 激光器進行驅動性能測試,線性度達到99.996%。連續50小時不間斷工作,驅動電流的波動幅度僅有0.004mA,為DFB激光器在痕量氣體濃度檢測方嚮提供瞭有力保障。
위료만족흔량기체검측계통대고정도격광기구동전원적수구,기우DSP적고속운산성능,통과내배모의반궤여외배PID공제산법상결합적쌍반궤모식래체도정학공제격광기구동전류적목적,설계료일충기우DSP적 DFB 격광기구동전원。이중심파장위1651 nm 적 DFB 격광기진행구동성능측시,선성도체도99.996%。련속50소시불간단공작,구동전류적파동폭도부유0.004mA,위DFB격광기재흔량기체농도검측방향제공료유력보장。
To meet the need of high-precision DFB laser driver used in trace gas detection, designed a laser driver circuit based on DSP that has high-speed computation. It combined the analog feedback with PID control algorithm to control the laser driver circuit more precise. The DFB laser driver is used to drive a DFB laser whose central wave-length is 1651nm, and the linearity getting from the experiment is 99. 996%. The current of the laser driver which is continuous working for 50 hours is 0. 004mA. The DFB laser driver provides a strong guarantee for trace gas detection.
