In-vehicle living subject monitoring method and in-vehicle living subject monitoring system

An in-vehicle living subject monitoring method for monitoring a space inside a vehicle, the in-vehicle living subject monitoring method comprising:

• detecting, with a detector, the space inside the vehicle to obtain a plurality of point cloud information;
• receiving, with a processor, the plurality of point cloud information from the detector, calculating the plurality of point cloud information to obtain a plurality of signal-to-noise ratios corresponding to the plurality of point cloud information, and calculating the plurality of signal-to-noise ratios to obtain an average value or a standard deviation of the plurality of signal-to-noise ratios;
• and
• performing, with the processor, a judging step comprising judging whether a living subject is present in the space inside the vehicle according to the average value or the standard deviation of the plurality of signal-to-noise ratios and a number of point clouds in an upper space of the space inside the vehicle to generate a state judgment result, and outputting a state parameter corresponding to a state of the space inside the vehicle according to the state judgment result.

An in-vehicle living subject monitoring system for monitoring a space inside a vehicle, the in-vehicle living subject monitoring system comprising:

• a detector for detecting the space inside the vehicle to obtain a plurality of point cloud information;
• and
• a processor connected to the detector, and receiving the plurality of point cloud information, the processor calculating the plurality of point cloud information to obtain a plurality of signal-to-noise ratios corresponding to the plurality of point cloud information, calculating the plurality of signal-to-noise ratios to obtain an average value and a standard deviation of the plurality of signal-to-noise ratios, and performing a judging operation;
• wherein the judging operation comprises judging whether a living subject is present in the space inside the vehicle according to the average value and the standard deviation to generate a state judgment result, and outputting a state parameter corresponding to a state of the space inside the vehicle according to the state judgment result.