Seat state sensing device, computer-readable recording medium recording a program, and seat state sensing method

A computer-readable recording medium recording a program for causing a computer, as a seat state sensing device that is mounted to a vehicle and includes

• at least one first vibration detector that is installed in at least one seat of the vehicle, detects vibration, and outputs a first vibration signal, and
• at least one second vibration detector that is installed in a vehicle body near the at least one seat, detects vibration, and outputs a second vibration signal, to:
• calculate a similarity between the first vibration signal input from the at least one first vibration detector and the second vibration signal input from the at least one second vibration detector, and
• sense a seat state including at least one of a slide position of the at least one seat in a front-rear direction of the vehicle body, a reclining angle of the at least one seat, and an orientation of the at least one seat with respect to the front-rear direction of the vehicle body, based on the similarity.

A seat state sensing method for causing a seat state sensing device that is mounted to a vehicle and includes

• at least one first vibration detector that is installed in at least one seat of the vehicle, detects vibration, and outputs a first vibration signal, and
• at least one second vibration detector that is installed in a vehicle body near the at least one seat, detects vibration, and outputs a second vibration signal, to perform:
• calculating a similarity between the first vibration signal input from the at least one first vibration detector and the second vibration signal input from the at least one second vibration detector;
• and
• sensing a seat state including at least one of a slide position of the at least one seat in a front-rear direction of the vehicle body, a reclining angle of the at least one seat, and an orientation of the at least one seat with respect to the front-rear direction of the vehicle body, based on the calculated similarity.