System and method for suppressing peaks in a seismogram

一种心震图、加速度计的技术，应用在测量脉率/心率、医药科学、诊断等方向，能够解决不舒服、电极和电缆附接碍事等问题

Active Publication Date: 2022-07-29
KONINKLJIJKE PHILIPS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the attachment of electrodes and cables can become intrusive and uncomfortable during prolonged use of the electrodes and cables as patients are often required to be in the patient room for extended periods of time

Method used

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  • System and method for suppressing peaks in a seismogram
  • System and method for suppressing peaks in a seismogram
  • System and method for suppressing peaks in a seismogram

Examples

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Embodiment Construction

[0088] The present invention provides a seismocardiography system comprising: an accelerometer adapted to obtain accelerometer data from a user; and a bandpass filter adapted to filter the accelerometer data. The system also includes: an envelope filter adapted to suppress the S2 peak in the bandpass filtered accelerometer data, wherein the envelope filter includes: a low pass filter; and a comb filter, wherein the The delay of the comb filter is tuned to left ventricular ejection time (LVET).

[0089] image 3 A schematic diagram of a seismocardiography system 200 is shown.

[0090] The system includes: a preprocessor 210, refer to Figure 4 are described in more detail; peak detector 220; and classifier 230. The preprocessor gets data from the accelerometer (eg, figure 1 Accelerometer data 240 of the accelerometer 100 shown in . In this case, the accelerometer data includes the acceleration component: a x , a y and a z ; they are on the three orthogonal axes x, y,...

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PUM

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Abstract

The present invention provides a seismogram system comprising: an accelerometer adapted to obtain accelerometer data from a user; and a bandpass filter adapted to filter the accelerometer data . The system further includes an envelope filter adapted to suppress the S2 peak in the bandpass filtered accelerometer data, wherein the envelope filter includes: a low pass filter; and a comb filter, wherein , the delay of the comb filter is tuned based on left ventricular ejection time (LVET).

Description

technical field [0001] The present invention relates to the field of signal processing, and more particularly to the field of peak suppression in seismograms. Background technique [0002] Respiratory and cardiac signals and their corresponding rates are basic vital signs used to monitor the patient's condition. In particular, heart rate is one of the most important vital signs for patient monitors in wards. Typically, vital signals are generated by sensor electrodes attached to the patient. However, since the patient typically needs to be in the ward for extended periods of time, the attachment of the electrodes and cables can become intrusive and uncomfortable during prolonged use of the electrodes and cables. [0003] In response, unobtrusive measurement techniques for monitoring a patient's respiratory and cardiac signals have become increasingly popular. For example, a battery powered triaxial accelerometer can be attached to the patient's body. In this case, the ac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/11A61B5/00A61B5/024
CPCA61B5/7221A61B5/024A61B5/1102A61B5/6823A61B5/725A61B5/7225A61B2562/0219
Inventor R·M·M·德克斯T·G·埃姆里希
Owner KONINKLJIJKE PHILIPS NV
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