Physiological signal measuring device and method

Abstract

A physiological signal measuring device is provided. The physiological signal measuring device includes a light emitting module, a light sensing module and a controller. The light emitting module includes a light emitting unit configured to generate emitted light according to a first control signal in each measurement period. The light sensing module includes a sensing unit configured to receive a reflected light corresponding to the emitted light in each of the measurement periods. The controller is configured to change the first control signal in each of the measurement periods to change luminous intensity of the emitted light, and obtain a sensing signal corresponding to the luminous intensity of the emitted light based on the reflected light. The controller is configured to obtain a physiological signal corresponding to at least one physiological parameter according to the sensing signals of the measurement periods.

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