System and method for providing information about presence in a space

A system for providing information about presence in a space, the system comprising:

• a movement sensor configured to generate a first signal upon detecting movement within its movement detection field;
• a presence sensor configured to generate a second signal upon detecting presence within its presence detection field, the presence sensor being a temperature-based matrix sensor comprising an array of sensing elements;
• the movement detection field and the presence detection field being within the space;
• the system comprises:
• processing and/or control means in communication with the movement sensor and the presence sensor, the processing and/or control means being configured to generate a presence signal upon receiving the first signal and/or the second signal from the movement sensor and/or the presence sensor, respectively;
• the processing and/or control means being configured to obtain background information of the presence detection field, the background information comprising reference temperature values of the array of sensing elements of the presence sensor, the background information being obtained:
• upon the movement sensor not detecting movement within its movement detection field;
• and/or,
• upon the presence sensor detecting presence within its presence detection field, and for each sensing element of the array of sensing elements in which presence has been detected by the presence sensor, using the measured temperature value of a plurality of surrounding sensing elements which do not have human presence, or, if all of the plurality of surrounding sensing elements have human presence, using the measured temperature value of some sensing elements surrounding the plurality of surrounding sensing elements which do not have human presence.