Mat for sensing human body movement with sensor array

A method for sensing an object on a mat, wherein the mat comprises:

• a substrate;
• a drive unit;
• a sensor array that is disposed on the substrate and that includes a plurality of fiber sensors, wherein the plurality of fiber sensors is disposed at opposite ends of the substrate and between the opposite ends of the substrate;
• a plurality of connection electrodes that are disposed at an edge of the substrate and electrically connect the plurality of fiber sensors with the drive unit;
• and
• a shield portion disposed at the edge of the substrate, the shield portion having a shape that surrounds the plurality of connection electrodes,
• the method comprising:
• applying, using the drive unit, a voltage to the sensor array;
• receiving, at the drive unit, a signal from each of the plurality of fiber sensors, the signal be representative of a distance between the fiber sensor and the object, wherein the shield portion is configured block an electromagnetic field to thereby restrict an impedance change of the plurality of connection electrodes based on a distance change between the plurality of connection electrodes and the object;
• and
• generating, using the drive unit, sleep information of the object based on the signal.