Patent ID: 8551007
Filing Date: 2013-10-08
Classification: A61B,G06K

Abstract:
1. A pulse rate measuring apparatus, comprising: a first calculation device for receiving input of pulse wave data obtained from change in a blood flow, and calculating an average interval of a prescribed number of immediately preceding pulses or pulses in an immediately preceding prescribed time period; a determination device for determining an average-calculation range for calculating an average value based on at least one of an amount of fluctuation and an evaluation result, the amount of fluctuation being a value calculated based on a difference between the average interval and an interval of a pulse wave newly detected from the pulse wave data, and the evaluation result being a result of evaluating the interval of the newly detected pulse wave by at least one evaluation factor, wherein when the amount of fluctuation is greater than a prescribed value, the determination device determines the average-calculation range to be wider than the average-calculation range determined when the amount of fluctuation is smaller than the prescribed value; a second calculation device for averaging pulse wave intervals of the pulse wave data based on the average-calculation range, and calculating an average pulse wave interval value; and a third calculation device for calculating a pulse rate based on the average pulse wave interval value.