PROBLEM TO BE SOLVED: To improve the accuracy of estimating an awaking degree by improving the accuracy of detecting bioinformation.SOLUTION: An awaking degree estimation device includes: a biological sensor having an antenna element contacting with a subject a respiration heartbeat detection means transmitting a microwave from the antenna element, and acquiring a respiration signal and a heartbeat signal of the subject based on a signal received from the antenna element and an awaking degree estimation means estimating an awaking degree of the subject based on the respiration signal and the heartbeat signal. Preferably, a composite sensor 100 is provided with a temperature sensor 20, and the awaking degree is estimated based on even a difference (proportional to a deep part body temperature change) between the body temperature of a waist or a thigh and the body temperature of a shoulder. The composite sensor 100 is provided with a pressure sensor 30, and the awaking degree is estimated based on signals obtained from the composite sensor 100 wherein an output of the pressure sensor 30 is stable, so that the accuracy of detecting bioinformation and the accuracy of estimating the awaking degree can be improved.COPYRIGHT: (C)2013,JPO&INPIT【課題】生体情報の検知精度を向上させ、覚醒度の推定精度を向上させる。【解決手段】覚醒度推定装置は、被験者に接触するアンテナエレメントを有する生体センサと、アンテナエレメントからマイクロ波を送信し、該アンテナエレメントから受信される信号に基づいて、被験者の呼吸信号および心拍信号を取得する呼吸心拍検知手段と、呼吸信号および心拍信号に基づいて、被験者の覚醒度を推定する覚醒度推定手段と、を備える。複合センサ100に温度センサ20を設け、腰部または大腿部の体温と肩口の体温の差(深部体温変化に比例)にも基づいて覚醒度を推定することも好ましい。また、複合センサ100に圧力センサ30を設け、圧力センサ30の出力が安定している複合センサ100から得られる信号に基づいて覚醒度を推定することで、生体情報の検出精度および覚醒度の推定精度を向上できる。【選択図】図1
