Terahertz detection method and system for high-risk chemical in atmosphere

A terahertz based method for detecting a distribution of an atmospheric high-risk chemical, comprising:

• obtaining concentration distribution information of an atmospheric high-risk chemical at a current detecting location by a detecting device;
• obtaining a target detecting location according to the concentration distribution information of the atmospheric high-risk chemical, and driving the detecting device to reach the target detecting location;
• obtaining the concentration distribution information of the atmospheric high-risk chemical at the target detecting location by the detecting device;
• obtaining a next target detecting location according to the concentration distribution information of the atmospheric high-risk chemical at a current target detecting location and driving the detecting device to reach the next target detecting location, until coordinates of the next target detecting location coincide with the coordinates of any of previous detecting locations, thereby obtaining the concentration distribution information of the atmospheric high-risk chemical at a plurality of detecting locations;
• and
• transmitting the concentration distribution information to a data processing system to process the concentration distribution information of the atmospheric high-risk chemical at the plurality of detecting locations, thereby obtaining a spatial distribution image of the atmospheric high-risk chemical.

A terahertz based method for detecting a single leakage source of an atmospheric high-risk chemical, the method comprising:

• obtaining concentration distribution information of an atmospheric high-risk chemical at a current detecting location by a detecting device;
• obtaining a target detecting location according to the concentration distribution information of the atmospheric high-risk chemical, and driving the detecting device to reach the target detecting location;
• obtaining the concentration distribution information of the atmospheric high-risk chemical at a current target detecting location by the detecting device;
• obtaining a next target detecting location according to the concentration distribution information of the atmospheric high-risk chemical at the current target detecting location;
• and driving the detecting device to reach the next detecting location, until a concentration of the atmospheric high-risk chemical at the next target detecting location reaches a maximum value;
• and
• obtaining a spatial distribution image of the atmospheric high-risk chemical according to the concentration distribution information of the atmospheric high-risk chemical at the current detecting location and the concentration distribution information of the atmospheric high-risk chemical at the target detecting locations.