Motion detection system and method of a building automation system

A method for a motion detection system of a building automation system, the method comprising:

• receiving raw signal from a motion sensing component of the building automation system;
• establishing first-order difference signals based on the raw signal;
• establishing filtered first-order difference signals based on the first-order difference signals;
• identifying in-band energy in an motion portion of a sensor frequency range based on the filtered first-order difference signals, identifying the in-band energy including applying dead zone shifting to the filtered first-order difference signals in response to an interference transmission;
• identifying total energy in the sensor frequency range based on the first-order difference signals;
• determining a ratio of the in-band energy and the total energy;
• and
• generating a motion status update in response to determining that the ratio meets or exceeds a predetermined ratio threshold.

A motion detection system of a building automation system comprising:

• a motion sensing component configured to generate a raw signal;
• a low pass filter generates filtered first-order difference signals based on the first-order difference signals;
• and
• a processor configured to establish first-order difference signals based on the raw signal, identify in-band energy in an motion portion of a sensor frequency range based on the filtered first-order difference signals, identify total energy in the sensor frequency range based on the first-order difference signals, determine a ratio of the in-band energy and the total energy, and generate a motion status update in response to determining that the ratio meets or exceeds a predetermined ratio threshold,
• wherein the processor is further configured to apply windowing to the filtered first-order difference signals.

A method for a motion detection system of a building automation system, the method comprising:

• receiving raw signal from a motion sensing component of the building automation system;
• establishing first-order difference signals based on the raw signal;
• establishing filtered first-order difference signals based on the first-order difference signals;
• identifying in-band energy in an motion portion of a sensor frequency range based on the filtered first-order difference signals, identifying the in-band energy including applying windowing to the filtered first-order difference signals;
• identifying total energy in the sensor frequency range based on the first-order difference signals;
• determining a ratio of the in-band energy and the total energy;
• and
• generating a motion status update in response to determining that the ratio meets or exceeds a predetermined ratio threshold.