Continuous QCL driver for CO and N2O detection based on DSP

A CO and N2O detection continuous QCL driver based on a DSP comprises a DSP main control unit, a power supply system, a driving waveform generation circuit, a voltage-controlled constant current source circuit, an overcurrent protection circuit, a current detection and optimization control circuit and a temperature control circuit. The DSP main control unit is used for controlling the DAC and the DDS to generate signals required by driving waveforms, controlling the ADC to perform analog-to-digital conversion, and integrating a Fuzzy-PID algorithm to optimize an output driving current; the driving waveform generation circuit generates driving voltage signals with two modulation depths, and the detection lower limit of two gases is improved; and the current detection and optimization control circuit samples a driving voltage signal by using an ADC (Analog to Digital Converter) to ensure the stability of the wavelength of the QCL laser. According to the invention, the condition that only ...