| 摘要 |
A problem to be solved by the present invention is that there is much noise in a signal which is obtained with an optical sensor, and it is not possible to properly detect chewing. Provided is a chewing detecting device, comprising: earphone-type external auditory canal sensors 11, 12, which comprise combinations of light-emitting elements 34 and photoreceptor elements 35, in which the photoreceptor elements 35 receive reflected light of light which the light-emitting elements 34 have emitted within the external auditory canals, and which output piezoelectric signals corresponding to the received light quantities; associating means 51 for associating output signals of the external auditory canal sensors 11, 12 with jaw actions, and outputting chewing signals to the effect that the jaw has made a chewing action; and chewing period sensing means 52 for assessing whether the output of the external auditory canal sensors 11, 12 is based on the jaw actions (within a chewing period), and when not based on the jaw actions (outside the chewing period), invalidating the output of the associating means 51. |
