A photoelectric pulse signal measuring method, device and measuring equipment

Abstract

The invention discloses a photoelectric pulse signal measuring method, device and measuring equipment. The method includes the steps of obtaining a main path optical signal emitted by a path of photoelectric emitter and reflected from the surface of skin with arteries below, obtaining at least one path of auxiliary optical signal receiving environment optical signals, filtering out environment light interference in the main path optical signal in a self-adaptation mode according to the at least one path of auxiliary optical signal, obtaining a self-adaptation filtering result, and extracting a pulse signal from the self-adaptation filtering result. According to the technical scheme, the photoelectric sensor array technology is used, environment light interference is filtered out from the main path optical signal in the self-adaptation mode, the attachment degree of the equipment and skin is not limited strictly, and environment light interference during photoelectric pulse signal measurement can be easily and effectively eliminated.

Description

technical field [0001] The invention relates to the technical field of signal detection, in particular to a photoelectric pulse signal measurement method, device and measurement equipment capable of suppressing noise interference and enhancing pulse detection signal strength. Background technique [0002] Photoelectric pulse signal detection is widely used in medical and consumer electronics fields due to its convenient use, small size and low power consumption, especially in wearable devices. [0003] The principle of photoelectric pulse signal detection is that when light is irradiated on the skin, part of it is absorbed and part is reflected. When the heart beats, the flow velocity of arterial blood in the blood vessel presents the same periodic motion as the heartbeat cycle, causing reflected light Periodic changes in intensity. The photoelectric transmitter emits a light beam to the skin, which is reflected by the skin and received by the photoelectric receiver. Accord...

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Problems solved by technology

However, the applicability of these methods will be reduced in portable devices and wearable devices. In such devices, for the convenience and comfort of use, the sensor and the skin are not tightly attached, and gaps are prone to appear, and the size of the gap will vary with the Changes relative to movement, it is difficult to effectively block the ambient light; in wearable devices, the device needs to have a long working time, increasing the intensity of the light source will cause excessive power consumption and shorten the use time, which is not applicable

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