Patent ID: 7530198

Claim:
A swing door opening/closing detection system comprising: a door main body which is rotatably provided and which rotates to open/close relative to an opening part; a driving part rotary driving said door main body; a control part controlling the rotary driving of said door main body by said driving part; a sensing part attached to said door main body to sense a person or an object in a sensing area on a path of said door main body; a deformation part having a first end attached to the door main body and a second end attached to a fixed body that remains fixed regardless of a rotational position of said door main body, said deformation part being configured to exhibit an amount of tortional deformation corresponding to the rotational position of said door main body; and a discriminating part configured to determine an opening/closing position of said door main body based on the amount of tortional deformation of said deformation part so as to control an operation of said control part based on a determination result of the discriminating part.