Pulse wave measuring device

Abstract

A pulse wave measuring device includes: a connector that is disposed on a main unit; an external sensor that includes an external light-emitting module radiating light to a human body to be measured and an external light-receiving module receiving at least one of reflected light and transmitted light originating from the external light-emitting module and the human body so as to measure a pulse wave; an first controller that switches the external light-emitting module ON and OFF; an second controller that switches the external light-receiving module ON and OFF; and an external sensor connection determination section that determines a connection between the external sensor and the connector in accordance with a transient response of the external light-receiving module, wherein, after the external sensor connection determination section determines that the external sensor is connected to the connector, a measurement of the pulse wave by using the external sensor is started.

1 - 4 . (canceled) 
     
     
         5 . A pulse wave measuring device comprising:
 an external sensor that includes an external light-emitting module emitting light to a human body to be measured and an external light-receiving module receiving at least one of reflected light and transmitted light originating from the external light-emitting module so as to measure a pulse wave;   a first controller that controls the external light-emitting module;   a second controller that controls the external light-receiving module; and   the external sensor attachment determination section that determines the external sensor is properly put on the human body according to whether or not an output from the external light-receiving module produced by activation of the external light-receiving module remains continually smaller or larger than a given threshold level for a given period of time or longer than the given period of time.   
     
     
         6 . The pulse wave measuring device according to  claim 5 , further comprising:
 an internal sensor that includes an internal light-emitting module emitting light to an area to be measured and an internal light-receiving module receiving at least one of reflected light and transmitted light originating from the internal light-emitting module and the area to be measured so as to measure a pulse wave;   a third controller that controls the internal light-emitting module; and   a forth controller that controls the internal light-receiving module;   wherein the internal light-emitting module is activated after the internal light-receiving module become a stable state, and   the external sensor attachment determination section determines the internal sensor is properly put on the human body according to whether or not an output from the internal light-receiving module produced by activation of the internal light-receiving module remains continually smaller or larger than a given threshold level for a given period of time or longer than the given period of time.