System and method of detecting environmental changes using wireless sensing

A system for detecting an environmental cause of a change in temperature in a closed space, the system comprising:

• a wireless receiver device;
• a processor;
• and
• a memory storing a trained classifier and instructions executable on the processor to implement a method comprising:
• extracting channel signal information (CSI) amplitudes for a wireless networking signal received at the wireless receiver device;
• selecting, from a plurality of subcarriers of the extracted CSI amplitudes, a subset of subcarriers, the selection based on a previously determined relationship between an amplitude and a temperature for each of the plurality of subcarriers;
• and
• providing the CSI amplitudes of the selected subcarriers to the trained classifier determine the environmental cause.

A non-transitory computer readable medium computer-readable storage medium which stores a program for executing a method of method of detecting an environmental cause of a change in temperature in a closed space, the method comprising:

• extracting channel signal information (CSI) amplitudes for a wireless networking signal received at a wireless receiver device;
• selecting, from a plurality of subcarriers of the extracted CSI amplitudes, a subset of subcarriers, the selection based on a previously determined relationship between an amplitude and a temperature for each of the plurality of subcarriers;
• and
• providing the CSI amplitudes of the selected subcarriers to a classifier trained to determine whether the environmental cause is present.