Wavelength locking calibration-free laser gas telemetering device

The utility model discloses a wavelength locking calibration-free laser gas telemetering device, and relates to the technical field of laser spectrum gas detection. Comprising an optical measurement system and a signal processing system. The optical measurement system comprises a gas detection module, a pointing module and a calibration module; the signal processing module comprises a power supply circuit, a master control MCU, a signal detection module, a laser frequency stabilization module and a wavelength locking module. According to the utility model, the concentration of the detected gas is calculated through weak signal processing and a concentration inversion algorithm; meanwhile, a light beam splitter is additionally arranged at the light emitting position of the semiconductor laser, one path is used for detecting the detected gas, the other path enters a gas pool with the gas sealed in advance, real-time wavelength locking is achieved through wavelength locking signal processing of a detector, the m