Disclosed are an apparatus for detecting a sitting posture and a control method thereof. The apparatus for detecting a sitting posture of the present invention comprises: a left inclination angle measuring part for measuring the left inclination angle of a left seat frame in a chair having the left seat frame and a right seat frame independently supporting the left and right sides of a users pelvis a right inclination angle measuring part for measuring a right inclination angle of the right seat frame an input part for setting a start of operation and an operation mode a storage part for storing the left inclination angle and the right inclination angle measured by the left inclination angle measuring part and the right inclination angle measuring part, respectively a control part which receives the left inclination angle and the right inclination angle from the left inclination angle measuring part and the right inclination angle measuring part, respectively, so as to store the same in the storage part according to the start of operation of the input part, and analyzes and outputs the sitting posture on the basis of the left inclination angle and the right inclination angle stored in the storage part according to the operation mode an interface part for outputting the left inclination angle and the right inclination angle measured by the left inclination angle measuring part and the right inclination angle measuring part to an external device and an output part for outputting an operation state of the control part according to the operation mode.Linvention concerne un appareil permettant de détecter une posture assise et un procédé de commande associé. Lappareil permettant de détecter une posture assise de la présente invention comprend : une partie de mesure dangle dinclinaison gauche pour mesurer langle dinclinaison gauche dun cadre de siège gauche dans une chaise ayant le cadre de siège gauche et un cadre de siège droit soutenant indépendamment les côtés gauche
