Portable device capable of compensating action error to measure heatbeat information, heartbeat information measuring method and heartbeat information measuring system

Abstract

A portable device capable of compensating an action error to measure heatbeat information comprises a portable device body and a heartbeat information measuring system. The heartbeat information measuring system comprises an optical device and a piezoelectric device disposed on the portable device body. When the portable device body is worn, the optical device contacts a user's organic tissue to sense a physiological signal of the organic tissue and generate a photoelectric signal. The piezoelectric device detects a change, due to a user's action, of a pressure applied by the portable device body on the organic tissue, and generates a piezoelectric signal. The heartbeat information measuring system comprises a central processing unit, and, after the compensation operation is performed on the photoelectric signal according to the piezoelectric signal, the compensated photoelectric signal is converted into heartbeat information. A heartbeat information measuring method and the heartbeat information measuring system are also be provided, and then accuracy and stability of heartbeat information measurement are improved.

Description

technical field [0001] The present invention relates to a heartbeat information measurement, in particular to a portable device, a measurement method and a measurement system that can compensate movement errors to measure heartbeat information. Background technique [0002] It has been proved to be a feasible method to measure heartbeat by injecting light into skin tissue and detecting the contraction and dilation of blood vessels through the intensity change of reflected light; generally speaking, an optical device for measuring heartbeat contains several predetermined wavelengths When the LED illuminates a part of organic tissue, such as skin, the light is scattered / reflected in the organic tissue and partly absorbed, and the photoreceptor is used to detect Measuring the scattered / reflected light, as the blood flow pulse changes, the intensity of the scattered / reflected light will change, and the frequency of the change roughly corresponds to the frequency of the heartbeat...

AI Technical Summary

Problems solved by technology

However, since there is no fixed position for wearing the watch on the hand, especially a small wrist twist (non-movement) is not enough to cause the acceleration sensor to actuate, but this twist is enough to make the optical measurement signal error

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