CN110916715A - Heart sound collection system based on little acceleration sensor - Google Patents
Heart sound collection system based on little acceleration sensor Download PDFInfo
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- CN110916715A CN110916715A CN201911195234.5A CN201911195234A CN110916715A CN 110916715 A CN110916715 A CN 110916715A CN 201911195234 A CN201911195234 A CN 201911195234A CN 110916715 A CN110916715 A CN 110916715A
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- heart sound
- acceleration sensor
- signal
- processing circuit
- probe
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B7/00—Instruments for auscultation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/02—Details of sensors specially adapted for in-vivo measurements
- A61B2562/0219—Inertial sensors, e.g. accelerometers, gyroscopes, tilt switches
Abstract
A heart sound acquisition device based on a micro acceleration sensor belongs to the technical field of medical instruments. The technical scheme of the invention is as follows: a heart sound collecting device based on a micro acceleration sensor comprises a heart sound collecting probe, a heart sound signal processing circuit and a PC (personal computer) end display which are electrically connected in sequence; the heart sound collection probe includes: the device comprises a heart sound probe shell, a flexible film, a micro acceleration sensor, an elastic beam and an insulating liquid medium; the micro acceleration sensor is electrically connected with the signal input end of the heart sound signal processing circuit through a signal wire, and the signal output end of the heart sound signal processing circuit is electrically connected with the PC end display through a signal wire; the heart sound signal processing circuit comprises a filter circuit, a signal amplifying circuit and an AD conversion device. The heart sound acquisition device provided by the invention not only can acquire the heart sound signals, but also can effectively avoid the interference of environmental factors on the heart sound signals.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a heart sound acquisition device based on a micro-acceleration sensor.
Background
The heart sound signal is one of important physiological signals of a human body, and the generation mechanism of the heart sound signal can well reflect the heart activity, the blood flow and the health condition of the heart. The detection and analysis of the voice and information can accurately judge the heart sound signals and discover cardiovascular diseases in advance, and is an indispensable means for knowing the states of the heart and blood vessels.
The heart sound signal contains much information of cardiovascular diseases, and whether the cardiovascular diseases are healthy or not is difficult to judge by simply auscultation of the heart. The electrocardiographic examination widely used at present is the best detection method for the chronotropic and conductivity change of the heart, but the damage of the heart valve of the heart cannot be detected, and the electrocardiographic examination is easily interfered by the outside. The mechanical movement disorder of the heart caused by the heart electrical conduction tissue lesion is not reflected on an Electrocardiosignal (ECG) firstly, but can be reflected on a heart sound firstly, so that the heart sound has diagnostic information irreplaceable by the electrocardiosignal.
Disclosure of Invention
The invention aims to solve the technical problem of providing a heart sound acquisition device based on a micro acceleration sensor, which can acquire and display heart sound signals in real time and effectively avoid the interference of environmental factors on the heart sound signals.
In order to solve the problems, the technical scheme of the invention is as follows: a cardiac sound collection device based on a micro-acceleration sensor, wherein: the heart sound monitoring device comprises a heart sound acquisition probe, a heart sound signal processing circuit and a PC (personal computer) end display which are electrically connected in sequence; the heart sound collection probe includes: the device comprises a heart sound probe shell, a flexible film, a micro acceleration sensor, an elastic beam and an insulating liquid medium;
the flexible film is arranged at an opening of one end of the heart sound probe close to the skin of the human body and wraps the inner cavity of the shell of the heart sound probe;
the elastic beam is arranged in the inner cavity of the heart sound probe shell and vibrates along the axial direction of the heart sound probe shell;
the micro acceleration sensor is arranged on the elastic beam;
the insulating liquid medium is arranged in the inner cavity of the heart sound probe shell, and the elastic beam and the micro acceleration sensor are immersed in the insulating liquid medium;
the micro acceleration sensor is electrically connected with the signal input end of the heart sound signal processing circuit through a signal wire, and the signal output end of the heart sound signal processing circuit is electrically connected with the PC end display through a signal wire;
the heart sound signal processing circuit comprises a filter circuit, a signal amplifying circuit and an AD conversion device; the signal output end of the micro acceleration sensor is connected to the input end of the filter circuit, the output end of the filter circuit is connected to the input end of the signal amplification circuit, and the output end of the signal amplification circuit is connected to the input end of the AD conversion device.
Further, the flexible film is made of butyronitrile; the elastic beam is made of latex.
By adopting the technical scheme, the heart sound signals generated during the heart vibration can be collected through the vibration of the micro acceleration sensor, and are displayed on the PC display in real time; the flexible film can be attached to the skin of a human body in a full-area mode, the heart sound signals are directly transmitted to the micro acceleration sensor through the insulating liquid medium, and the interference of the external environment on the heart sound signals can be effectively avoided.
Drawings
FIG. 1 is a functional block diagram of the present invention;
FIG. 2 is a schematic view of the installation of the present invention with the flexible membrane removed;
fig. 3 is an exploded view of the structure of the present invention.
Detailed Description
The invention is further illustrated by the following figures and examples.
As shown in fig. 1 to 3, a heart sound collecting device based on a micro acceleration sensor in the present embodiment includes: the heart sound monitoring device comprises a heart sound acquisition probe, a heart sound signal processing circuit and a PC (personal computer) end display which are electrically connected in sequence; the heart sound collection probe includes: the heart sound probe comprises a heart sound probe shell 1, a flexible film 2, a micro acceleration sensor 3, an elastic beam 4 and an insulating liquid medium 5;
the flexible film 2 is arranged at an opening of one end of the heart sound probe 1 close to the skin of a human body and wraps the inner cavity of the heart sound probe shell 1;
the elastic beam 4 is arranged in the inner cavity of the heart sound probe shell 1, and the elastic beam 4 vibrates along the axial direction of the heart sound probe shell 1;
the micro acceleration sensor 3 is arranged on the elastic beam 4;
the insulating liquid medium 5 is arranged in the inner cavity of the heart sound probe shell 1, and the elastic beam 4 and the micro acceleration sensor 3 are immersed in the insulating liquid medium 5;
the micro acceleration sensor 3 is electrically connected with the signal input end of the heart sound signal processing circuit through a signal wire, and the signal output end of the heart sound signal processing circuit is electrically connected with a PC (personal computer) end display through a signal wire;
the heart sound signal processing circuit comprises a filter circuit, a signal amplifying circuit and an AD conversion device; the signal output end of the micro acceleration sensor 3 is connected to the input end of the filter circuit, the output end of the filter circuit is connected to the input end of the signal amplification circuit, and the output end of the signal amplification circuit is connected to the input end of the AD conversion device.
Further, the flexible film 2 is made of butyronitrile; the elastic beam 4 is made of latex.
When this heart sound collection system used, the skin laminating of the one end that has flexible film 2 with the heart position of heart sound collection probe parcel, the heart sound signal passes through flexible film 2 and insulating liquid medium 5 and transmits to elastic beam 4, elastic beam 4 drives the heart sound signal that micro acceleration sensor 3 produced when vibration and then gathering heart vibration in the one-dimensional direction, and convert the heart sound signal into the signal of telecommunication, the signal of telecommunication of exporting, through filter circuit and signal amplification circuit, then transmit PC end display via the signal line through AD conversion equipment.
Claims (2)
1. The utility model provides a heart sound collection system based on little acceleration sensor which characterized in that: the heart sound monitoring device comprises a heart sound acquisition probe, a heart sound signal processing circuit and a PC (personal computer) end display which are electrically connected in sequence; the heart sound collection probe includes: the heart sound probe comprises a heart sound probe shell (1), a flexible film (2), a micro acceleration sensor (3), an elastic beam (4) and an insulating liquid medium (5);
the flexible film (2) is arranged at an opening of one end, close to the skin of a human body, of the heart sound probe (1) and wraps an inner cavity of the heart sound probe shell (1);
the elastic beam (4) is arranged in an inner cavity of the heart sound probe shell (1), and the elastic beam (4) vibrates along the axial direction of the heart sound probe shell (1);
the micro acceleration sensor (3) is arranged on the elastic beam (4);
the insulating liquid medium (5) is arranged in the inner cavity of the heart sound probe shell (1), and the elastic beam (4) and the micro acceleration sensor (3) are immersed in the insulating liquid medium (5);
the micro acceleration sensor (3) is electrically connected with the signal input end of the heart sound signal processing circuit through a signal wire, and the signal output end of the heart sound signal processing circuit is electrically connected with a PC (personal computer) end display through a signal wire;
the heart sound signal processing circuit comprises a filter circuit, a signal amplifying circuit and an AD conversion device; the signal output end of the micro acceleration sensor (3) is connected to the input end of the filter circuit, the output end of the filter circuit is connected to the input end of the signal amplification circuit, and the output end of the signal amplification circuit is connected to the input end of the AD conversion device.
2. A micro-acceleration sensor based heart sound collection device according to claim 1, characterized in that: the flexible film (2) is made of butyronitrile; the elastic beam (4) is made of latex.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911195234.5A CN110916715B (en) | 2019-11-28 | 2019-11-28 | Heart sound collecting device based on micro acceleration sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911195234.5A CN110916715B (en) | 2019-11-28 | 2019-11-28 | Heart sound collecting device based on micro acceleration sensor |
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| Publication Number | Publication Date |
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| CN110916715A true CN110916715A (en) | 2020-03-27 |
| CN110916715B CN110916715B (en) | 2023-05-09 |
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| CN201911195234.5A Active CN110916715B (en) | 2019-11-28 | 2019-11-28 | Heart sound collecting device based on micro acceleration sensor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11240579B2 (en) | 2020-05-08 | 2022-02-01 | Level 42 Ai | Sensor systems and methods for characterizing health conditions |
| CN115736938A (en) * | 2022-11-17 | 2023-03-07 | 东南大学 | Multi-mode physiological signal acquisition device |
Citations (8)
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| US4672976A (en) * | 1986-06-10 | 1987-06-16 | Cherne Industries, Inc. | Heart sound sensor |
| US4672977A (en) * | 1986-06-10 | 1987-06-16 | Cherne Industries, Inc. | Lung sound cancellation method and apparatus |
| US20060270939A1 (en) * | 2005-05-24 | 2006-11-30 | Cardiac Pacemakers, Inc. | Systems and methods for multi-axis cardiac vibration measurements |
| US20070197927A1 (en) * | 2005-12-22 | 2007-08-23 | Physical Logic Ag | Method for detecting cardiovascular problems using micro or nano vibrations |
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| CN103738241A (en) * | 2013-12-23 | 2014-04-23 | 青岛润鑫伟业科贸有限公司 | Heartbeat detecting device |
| US20140155762A1 (en) * | 2012-12-03 | 2014-06-05 | Cardiac Pacemakers, Inc. | Method and apparatus for detecting subaudible cardiac vibrations |
| CN105232080A (en) * | 2015-09-17 | 2016-01-13 | 中北大学 | Visual electronic stethoscope based on MEMS (micro-electro-mechanical system) acoustic sensor |
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2019
- 2019-11-28 CN CN201911195234.5A patent/CN110916715B/en active Active
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| US4672976A (en) * | 1986-06-10 | 1987-06-16 | Cherne Industries, Inc. | Heart sound sensor |
| US4672977A (en) * | 1986-06-10 | 1987-06-16 | Cherne Industries, Inc. | Lung sound cancellation method and apparatus |
| US20060270939A1 (en) * | 2005-05-24 | 2006-11-30 | Cardiac Pacemakers, Inc. | Systems and methods for multi-axis cardiac vibration measurements |
| US20070197927A1 (en) * | 2005-12-22 | 2007-08-23 | Physical Logic Ag | Method for detecting cardiovascular problems using micro or nano vibrations |
| US20140155762A1 (en) * | 2012-12-03 | 2014-06-05 | Cardiac Pacemakers, Inc. | Method and apparatus for detecting subaudible cardiac vibrations |
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| CN105232080A (en) * | 2015-09-17 | 2016-01-13 | 中北大学 | Visual electronic stethoscope based on MEMS (micro-electro-mechanical system) acoustic sensor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11240579B2 (en) | 2020-05-08 | 2022-02-01 | Level 42 Ai | Sensor systems and methods for characterizing health conditions |
| CN115736938A (en) * | 2022-11-17 | 2023-03-07 | 东南大学 | Multi-mode physiological signal acquisition device |
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| Publication number | Publication date |
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| CN110916715B (en) | 2023-05-09 |
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