Abstract: A respiration signal of a seated person is detected with high accuracy by using a vehicle seat that includes a seat cushion; and a sensor detecting a pressure signal from a load applied from a seated person. The sensor is provided to be along an edge of a contact portion between the seat cushion and buttocks of the seated person. The sensor transmits the detected pressure signal to an arithmetic operation device of the seated person. In a respiration measuring device, the arithmetic operation device computes the detected pressure signal detected by the sensor to obtain a respiration signal of the seated person.

Abstract: To make it possible to stably measure heartbeats even if seated persons physically differ and to measure the heartbeats of even a seated person other than a driver. A vehicle seat includes: a measuring device including a plurality of sensors that are provided in a seat back and that acquire body potentials of the seated person, and an arithmetic operation device that computes electrical signals to obtain an electrocardiographic signal of the seated person. The sensors are each capacitively coupled sensors. The sensor is arranged at a lower right position relative to the sensor and the sensor while facing a front surface of the seat back if a surface of the seat back facing the seated person is assumed as the front surface. Both sensors are arranged so that the seated person's heart is located in a zone if the zone is defined from the sensor and the sensor.

Abstract: A respiration signal of a seated person is detected with high accuracy by using a vehicle seat that includes a seat cushion; and a sensor detecting a pressure signal from a load applied from a seated person. The sensor is provided to be along an edge of a contact portion between the seat cushion and buttocks of the seated person. The sensor transmits the detected pressure signal to an arithmetic operation device of the seated person. In a respiration measuring device, the arithmetic operation device computes the detected pressure signal detected by the sensor to obtain a respiration signal of the seated person.