| 摘要 |
A device (100) and method for detecting a pulse cycle, and a wearable electronic device, the device comprising: a sensor (200) for sensing a pulse wave signal of a subject; and a processor for processing the analogue-to-digital converted digital pulse wave signal sensed by the sensor (200) so as to detect the pulse cycle of the subject, wherein the processor is configured to execute the following operations: calculating a differential value of the digital pulse wave signal over time; whenever the differential value varies from a positive number to a negative number, determining that the pulse wave signal reaches a maxima point, and recording a time value corresponding to the maxima point; once the differential value is less than a dynamic threshold value, identifying the latest recorded maxima point in the past time as a peak point of the pulse wave signal; and calculating the difference between the time values corresponding to two continuous peak points for the derivation of the pulse cycle. The real-time performance and the precision of detecting the pulse cycle are improved. |
