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Improved signal selection for obtaining a remote photoplethysmographic waveform

一种输入信号、信号信息的技术，应用在应用、诊断记录/测量、医药科学等方向，能够解决不可靠等问题，达到高可靠性和准确性的效果

Active Publication Date: 2016-07-20
KONINKLIJKE PHILIPS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This often results in unreliable waveform

Method used

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  • Improved signal selection for obtaining a remote photoplethysmographic waveform
  • Improved signal selection for obtaining a remote photoplethysmographic waveform
  • Improved signal selection for obtaining a remote photoplethysmographic waveform

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Embodiment Construction

[0047] figure 1 A patient 10 admitted in a hospital bed is illustrated. In such hospitalization situations, the vital signs of the patient 10 need to be monitored. Therefore, conventional monitoring systems typically rely on attachable sensors, ie, body-bound sensors. To increase patient comfort, a remote monitoring system can be used, which can reduce the required wiring. exist figure 1 In FIG. 1 , a monitoring system 12 for remotely monitoring vital signs of a patient 10 is illustrated in accordance with aspects of the present invention. The illustrated system 12 thus utilizes remote photoplethysmographic measurement principles. Thereby, the camera 14 is used to capture images, ie video sequences of the patient 10 . The camera can include a CCD or CMOS sensor for converting incident light and its intensity variations into electrical signals. The camera 14 captures light partially reflected from the skin of the patient 10 in particular non-invasively. The skin part may...

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Abstract

The present invention relates to a device (22) for processing input signals (34a, 34b) related to a vital sign of a subject (10), comprising an interface (24) for receiving a non-invasively detected input signal (34a, 34b), a feature extraction module (26) for extracting at least one feature of the input signal (34a, 34b), said at least one feature including an instantaneous frequency representation (40a, 40b) of the input signal (34a, 34b) and / or an instantaneous amplitude representation (42a, 42b) of the input signal (34a, 34b), a processing module (28) for determining a signal information content parameter (52) for the input signal (34a, 34b) based on the at least one extracted feature, said signal information content parameter (52) being indicative of information on a vital sign of the subject (10) included in the input signal (34a, 34b) and a combination module (30) for combining a plurality of input signals based on the signal information content parameters (52) of the plurality of input signals into a combined output signal characterizing the vital sign of the subject (10). The present invention further relates to a corresponding method and to a monitoring system (12) for remotely monitoring a vital sign of a subject (10).

Description

technical field [0001] The invention relates to a device and a method for processing an input signal. The invention also relates to a monitoring system for remotely monitoring vital signs of a subject. In particular, the present invention relates to evaluating remotely detected optical signals in order to obtain meaningful remote photoplethysmography (RPPG) waveforms. Background technique [0002] A person's vital signs, such as heart rate (HR), respiration rate (RR) or blood oxygen saturation, are used as indicators of the person's current state and as powerful predictors of serious medical events. For this reason, vital signs are widely monitored in inpatient and outpatient care settings, at home or further in health, leisure and fitness settings. [0003] One way of measuring vital signs is photoplethysmography. Photoplethysmography generally refers to the measurement of volume changes of an organ or body part and in particular to the detection of volume changes due to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/00A61B5/024A61B5/08A61B5/1455
CPCA61B5/7203A61B5/02416A61B5/0816A61B5/14551A61B5/0006A61B5/0008A61B5/02055A61B5/08A61B5/14552
Inventor A·C·登布林克尔M·布卢特V·让娜
Owner KONINKLIJKE PHILIPS NV