| 摘要 |
PURPOSE: A systolic blood pressure variation measuring device is provided to improve the reliability of measuring data by consecutively measuring the electrocardiogram and a pulse wave. CONSTITUTION: An electrocardiogram sensor(110) is arranged in a breast belt(100) in order to detect an electrocardiogram value when the heart is contracted. The electrocardiogram sensor has a surface electrode(111) and an active electrode(112). The active electrode senses an electric potential difference detected by the surface electrode. An armband has a plurality of first light emitting devices and a first light receiving part. The first light emitting device irradiates an infrared ray to an artery. The first light receiving part receives the infrared ray that is irradiated from the first light emitting device. A controller determines whether the signal that is detected by the armband is in a normal state.
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