Title:
PPG SENSOR, PHYSIOLOGICAL PARAMETER SENSOR, AND SMART WEARABLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/284234
Kind Code:
A1
Abstract:
A PPG sensor (100, 300, 500, 600), a physiological parameter sensor, and a smart wearable device. The PPG sensor (100, 300, 500, 600) comprises: a sensor sequence (400, 602), wherein the sensor sequence (400, 602) comprises at least three transmitter/detector sets, the at least three transmitter/detector sets are selectively activated so as to provide at least three paths of PPG signals, and the at least three paths of PPG signals correspond to the activated transmitter/detector sets in a one- to-one manner; and a processor. The processor is used for receiving the at least three paths of PPG signals and providing an output result of the PPG sensor (100, 300, 500, 600), the output result of the PPG sensor (100, 300, 500, 600) at least comprising a pulse wave transmitting direction. The pulse wave transmitting direction is determined according to the phase difference between the at least three paths of PPG signals, and the layout of the PPG sensor (100, 300, 500, 600); and the layout of the PPG sensor (100, 300, 500, 600) is determined according to the activated transmitter/detector sets. In this way, the PPG measurement result is perfected, and the measurement accuracy is improved.
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Inventors:
ZHOU YONG (CN)
Application Number:
PCT/CN2021/136009
Publication Date:
January 19, 2023
Filing Date:
December 07, 2021
Export Citation:
Assignee:
SHENZHEN MAIDU TECH CO LTD (CN)
International Classes:
A61B5/1455; A61B5/00; A61B5/0205
Domestic Patent References:
| WO2016108056A1 | 2016-07-07 |
Foreign References:
| CN113616201A | 2021-11-09 | |||
| US20160022157A1 | 2016-01-28 | |||
| US20170245767A1 | 2017-08-31 | |||
| US20200214579A1 | 2020-07-09 | |||
| US20170172433A1 | 2017-06-22 | |||
| US20210076951A1 | 2021-03-18 |
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
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