Patent ID: 7784362

Claim:
A two dimensional load distribution center position detection device comprising: a two dimensional load distribution center position detection sensor comprising: a plurality of detection elements, wherein an electric resistance between a first electrode and a second electrode of each of the plurality of detection elements varies when a load is acted on; and a plurality of cables connecting adjoining detection elements among the plurality of detection elements, electrically connecting a first electrode of a first detection element of the adjoining detection elements to a first electrode of a second detection element of the adjoining detection elements via a first resistor, and electrically connecting a second electrode of the first detection element to a second electrode of the second detection element via a second resistor; and a controller, wherein the two dimensional load distribution center position detection sensor further comprises: a first terminal electrically connected to a first electrode of a detection element arranged in an end of a first direction of the plurality of detection elements; a second terminal electrically connected to a first electrode of a detection element arranged in an end of a direction opposite to the first direction of the plurality of detection elements; a third terminal electrically connected to a second electrode of a detection element arranged in an end of a second direction different from the first direction of the plurality of detection elements; and a forth terminal electrically connected to a second electrode of a detection element arranged in an end of a direction opposite to the second direction of the plurality of detection elements, and the controller is configured to apply a voltage between the first terminal, the second terminal, the third terminal and the forth terminal so that a current passes the two dimensional load distribution center position detection sensor, and to calculate a position of a load acted on the two dimensional load distribution center position detection sensor based on a current passing the first terminal, a current passing the second terminal, a current passing the third terminal and a current passing the forth terminal.