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Miniature heart sound sensor based on mems technology and its application

A heart sound sensor and sensor module technology, applied in the field of biomedical signal detection, can solve the problems of inability to accurately locate the human heart sound auscultation area, large heart sound sensor, heart sound signal interference, etc., to achieve small size, low total harmonic distortion, The effect of high sensitivity

Active Publication Date: 2020-06-16
DALIAN UNIV OF TECH
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  • Abstract
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  • Claims
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Problems solved by technology

[0003] In the existing technology, the heart sound sensor has a large volume and has a large contact area with the skin, so it cannot accurately locate the human heart sound auscultation area, resulting in more interference in the collected heart sound signal

Method used

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  • Miniature heart sound sensor based on mems technology and its application
  • Miniature heart sound sensor based on mems technology and its application
  • Miniature heart sound sensor based on mems technology and its application

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Embodiment Construction

[0020] The specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings and technical solutions.

[0021] (1) if figure 1 , 2 As shown in and 3, the miniature heart sound sensor based on MEMS technology includes a metal case 1, a silicone pad 2 and a sensor module, the top and bottom of the metal case 1 are sealed by the silicone pad 2, and the sensor module is located inside the metal case 1. The metal casing 1 is made of 304 stainless steel, with a diameter of 18mm and a height of 4.5mm; there are three holes on the metal casing 1 for leading out the wires of the sensor module, namely hole a4, hole b5 and hole c6. There is a through hole in the center of the silicone pad 2 at the bottom, and the sensor module is placed on the through hole to form a cavity 3 for the coupling of heart sounds; the size of the cavity 3 is 8mm×8mm×1mm; the silicone pad 2 When in contact with human skin, it will not affect...

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Abstract

The invention relates to a miniature heart sound sensor based on an MEMS technique and an application of the miniature heart sound sensor, and belongs to the technical field of biomedical signal detection. The miniature heart sound sensor comprises a metal housing, a silica gel cushion and a sensor module, wherein a cavity is formed between the sensor module and an open hole in the silica gel cushion at the bottom of the metal housing, and is used for performing heart sound coupling during detection; the sensor module is arranged on a circuit board, and comprises a heart sound acquisition module and a signal amplifying module; the heart sound acquisition module is connected with the cavity in the bottom, and is used for acquiring a heart sound signal and outputting a simulation signal; andthe signal amplifying module is used for amplifying the acquired heart sound signal. When the miniature heart sound sensor is used, the bottom of the miniature heart sound sensor is embedded downwards to the silica gel cushion which is in contact with a human body; and array type distribution is adopted, and the miniature heart sound sensor can be used for synchronous acquisition of multiple-pathheart sound signals. The miniature heart sound sensor disclosed by the invention has the advantages of being small in volume, high in fidelity, high in sensitivity and the like; heart sound signals of the human body can be conveniently and swiftly acquired; and a convenient and accurate tool is provided for acquisition of the heart sound signals of the human body.

Description

technical field [0001] The invention belongs to the technical field of biomedical signal detection, in particular to a micro heart sound sensor based on MEMS technology and an application thereof. Background technique [0002] Heart sounds are the sounds produced by vibrations caused by myocardial contraction, heart valve closure, and blood hitting the walls of the ventricles, walls of the aorta, etc. Heart sounds are of great significance in the diagnosis of cardiovascular diseases. Traditionally, doctors rely on their own experience to make diagnoses, which is highly subjective. Converting heart sound signals into electrical signals can accurately help doctors identify heart sounds. [0003] In the existing technology, the heart sound sensor has a large volume and a large contact area with the skin, and cannot accurately locate the heart sound auscultation area of ​​the human body, resulting in more interference in the collected heart sound signal. Contents of the invent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B7/02A61B5/02
CPCA61B5/02007A61B5/7225A61B7/026A61B2562/028
Inventor 唐洪果斌斌
Owner DALIAN UNIV OF TECH
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