Pressure sensing system and seat cushion having the pressure sensing system

A pressure sensing system for a seat cushion, comprising:

• a flexible printed circuit comprising:
• a flexible substrate;
• and
• N horizontal sensing wires and M vertical sensing wires securely placed on a top surface of the flexible substrate, wherein the N horizontal sensing wires intersect and electrically connect with the M vertical sensing wires and form (N×M) intersections wherein each one of the (N×M) intersections electrically connects one of the N horizontal sensing wires and one of the M vertical sensing wires;
• and
• a layer of an electrically conductive foam placed on top of the N horizontal sensing wires and the M vertical sensing wires and operatively connected with the N horizontal sensing wires and the M vertical sensing wires,
• wherein in response to a pressure being applied to the layer of the electrically conductive foam, each intersection between the electrically connected N horizontal sensing wires and M vertical sensing wires generates in real time an electric flux density value to reflect a degree of a compression caused by the pressure to a corresponding point of the electrically conductive foam.