CN1488319A - Multifunctional electronic stethoscope - Google Patents
Multifunctional electronic stethoscope Download PDFInfo
- Publication number
- CN1488319A CN1488319A CNA021442762A CN02144276A CN1488319A CN 1488319 A CN1488319 A CN 1488319A CN A021442762 A CNA021442762 A CN A021442762A CN 02144276 A CN02144276 A CN 02144276A CN 1488319 A CN1488319 A CN 1488319A
- Authority
- CN
- China
- Prior art keywords
- signal
- sound
- electronic stethoscope
- purpose electronic
- band filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention is a multifunctional electronic stethoscope, including a sensor, a band-pass filter set, a D/A converter, a micro-controller and a speaker. Its character: the filter set contains multiple band-pass filters corresponding to different sound bands, the stethoscope also has an input unit for the user to input mode-switch command, and the micro-controller receives the command to select one signal of band-pass filter corresponding to the command and then outputs the signal to the speaker.
Description
(1) technical field
The present invention relates to a kind of electronic stethoscope, particularly relate to a kind of multi-purpose electronic stethoscope of selecting to listen to hear sounds, lungs sound and intestinal sound.
(2) background technology
Auscultation is to use the mode of examining of seeing very widely clinically, for example: hear the rhythm of the heart and to diagnose arrhythmia and cardiac valve pathological changes, listen pulmonary respiration sound can diagnose most pulmonary disease, listen the intestinal sound to comprise the situation of the heartbeat etc. of the movable sound of stomach, intestines wriggling sound and fetus with the diagnosis abdomen organ, these all are very important clinically reference materials, cause stethoscope to become doctor's representative symbol.
Pulmonary, heart and abdominal part active situation that present stethoscope is mainly used to listen to human body.Be a kind of electronic stethoscope in the past 1 as shown in Figure 1, it has a breeches pipe 11, an auscultation 12, receiver 14 and two earplugs 13.Breeches pipe 11 has a main pipe 111 and two forks 112 and is one slightly to be the body of Y font, and for hollow and all be equipped with lead, two forks 112 connect a receiver 14 respectively in the pipe.Auscultation 12 is arranged at an end of main pipe 111 and the lead in the connection tube, and the acoustic energy converting electrical energy can be transferred to receiver 14 through lead.Two earplugs 13 are to connect the free end of establishing two receivers 14 respectively and be connected with lead in the receiver 14, electric energy is converted to sound wave output.Like this, during auscultation, the doctor can put two earplugs 13 in ear earlier, then auscultation 12 is positioned on patient's human body surface of the corresponding organ of desiring auscultation for example heart, pulmonary or abdominal part (the intestines and stomach part, the general intestinal sound that claims) or the like position, the sound that make auscultation 12 acquisitions are transmitted into doctor's in ear by breeches pipe 11, receiver 14 and earplug 13, allow the doctor can come to judge according to empirical law patient's the state of an illness according to the variation of sound.
Though stethoscope 1 can be used to listen to hear sounds, lungs sound and intestinal sound of human body or the like, and was well known in the past, when using stethoscope 1, abstain from indoor noise and noise most.In addition, if the patient in stethoscope 1 talk of speaking, also can hinder the accurateness of auscultation.For instance, when the auscultation of hear sounds, if the patient does significantly respiratory movement, hear sounds also can be covered by lungs sound, so the doctor can require the patient to suspend breathing sometimes, but if change when doing to be the auscultation of lungs sound, the doctor can require the patient to do significantly respiratory movement conversely.This reason is that stethoscope 1 was truly to present near auscultation 12 ambient sound to give the doctor in the past, it also has the noise sound of many backgrounds except that the organ activity sound that comprises the desire measurement, cause the activity doctor that to take place because of surrounding or organ correctly to measure the organ activity sound of desiring to carry out auscultation by stethoscope 1, cause to be difficult to the disease that judges rightly, very the situation of person's erroneous judgement takes place.
Therefore, making stethoscope can correctly capture desire measures organ activity sound and becomes the dealer and make great efforts emphasis.Because though the frequency of the movable sound of each organ has part overlapping but still variant, the auscultation head of different frequency ranges so the another kind of stethoscope utilization in the past of existence is arranged in pairs or groups, and design the stethoscopic auscultation head of many moneys with respectively at the activity range of sounds of Different Organs, make each auscultation head can capture sound only is positioned at the active range of sounds of corresponding organ for frequency sound, the doctor can more can truly hear the active sound of desire measurement organ like this, so that diagnosis is more correct.But, this kind have at certain organs exclusive stethoscope be of limited application, often causing needs standby many pairs respectively at the stethoscope of difference in functionality (being organ), need replace corresponding different stethoscopes when causing desire to measure the organ difference, not only cause the inconvenience of doctor's auscultation, and the factor magnitude relation can be in any more instrument cost, utilize the mode of changing the auscultation head even if use same secondary stethoscope, also can bring inconvenience because of changing the action of auscultation head, and because the script price of auscultation head is just not low, this kind is more accurate at the desired frequency range of stethoscope of certain organs design, causes stethoscopic cost not striking.
Therefore, if can will sound therefrom capture the sound of corresponding designated organ activity range of sounds after the acquisition again, acoustical signal is an analyzing and processing and do not need to replace auscultation head or stethoscope by the doctor voluntarily in stethoscope like this, thereby can solve the problem of auscultation inconvenience.And, causing the cheap of electronic component owing to electronic manufacturing technology maturation today, the present invention can utilize simple electronic component to utter a word cent from processing like this, can make stethoscopic cost compared to reduce effectively in the past.
(3) summary of the invention
A purpose of the present invention is to provide a kind of multi-purpose electronic stethoscope, and user only needs input command can make multi-purpose electronic stethoscope comply with measurement organ difference and makes different signal processing, to reach the effect of being convenient to the user operation.
Another object of the present invention is to provide a kind of multi-purpose electronic stethoscope, can use the band filter of a plurality of corresponding respectively Different Organs activity voicebands to capture the signal that conforms to desire measurement organ activity sound, can measure the effect of a plurality of Different Organs to reach single stethoscope, and then reduce use cost.
Another purpose of the present invention is to provide a kind of multi-purpose electronic stethoscope, comes at Different Organs acquisition desired signal, to reach the effect that reduces manufacturing cost but use cost is lower than the band filter of auscultation head.
A further object of the present invention is to provide a kind of multi-purpose electronic stethoscope, and it has a data transmission module, so that signal can transfer to extraneous electronic machine through this, to reach the good effect of extendibility.
Thereby, multi-purpose electronic stethoscope of the present invention, it comprises a pick off, band filter set, an analog-to-digital converter, an input block, a microcontroller and a speaker; This pick off receives sound and converts thereof into the primary signal of an analog format; The set of this band filter has a plurality of band filters, and respectively this band filter has the frequency band that distributes of the sound of the Different Organs of corresponding human body respectively, to receive this primary signal and therefrom to capture an analytic signal that meets its frequency band; This analog-to-digital converter receives this analytic signal and its signal format is become numeral by analog-converted; This input block is to import a pattern switching command for user, with by selecting one in the pairing organ of this band filter; This microcontroller is to receive this digital assay signal and this pattern switching command, and eliminate this analytic signal noise so that respectively this analytic signal form a purification signal and will export purification signal that should the pattern switching command; This speaker is to receive this purification signal and convert thereof into sound wave to play.
(4) description of drawings
The present invention is described in detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is a kind of sketch map of electronic stethoscope in the past.
Fig. 2 is the circuit block diagram of a preferred embodiment of the present invention.
Fig. 3 is the schematic appearance of the embodiment of Fig. 2.
(5) specific embodiment
Because in the past in the stethoscope owing to change high and so on the problem of operation inconvenience that different stethoscopes or auscultation head cause and cost, so the present invention is directly to signal separation process in stethoscope inside, be that the beginning utilization captured required sound with the band filter that corresponding organ active band meets after the auscultation head was obtained signal, be different from the signal feed-in processing that utilizes different auscultation heads in the past and only capture corresponding organ frequency band, to solve shortcoming in the past.Major technique means of the present invention are to utilize and in stethoscope inside multi-bandpass filter are set, the activity range of sounds of Different Organs in the corresponding human body of each band filter difference, to capture corresponding organ activity sound, to reach the truer purpose that desire is measured organ activity sound that presents, its detailed technology embodiment hereinafter is revealed in illustrating.
With reference to Fig. 2 and Fig. 3, an embodiment of multi-purpose electronic stethoscope 2 of the present invention shown in the figure.Because when general doctor uses stethoscope to carry out auscultation, the overwhelming majority is the movable sound that is used for measuring three kinds of organs of heart, pulmonary and intestinal sound (as gastrointestinal), so present embodiment is to design three kinds of functions measuring hear sounds, lungs sound and intestinal sound.The multi-purpose electronic stethoscope 2 of present embodiment comprises a pick off 20, band filter set 21, one analog-to-digital converter 22, an input block 23, a microcontroller 24 and a speaker 25.And as Fig. 3, except pick off 20 and speaker 25, other members 21 ~ 24th of multi-purpose electronic stethoscope 2 are placed on the housing 30.
This pick off 20 is to convert the sound around the source of sound such as heart, pulmonary or abdominal part 3 the electric primary signal of an analog format to feed-in band filter set 21.Pick off 20 collected sound are collected near the background sound the source of sound 3 in the lump except the sound of source of sound 3, not as utilized frequency band differences to capture the sound of corresponding source of sound 3 affiliated frequency bands in the past as far as possible.In the present embodiment, pick off 20 is that (electrical consider microphone ECM), and as shown in Figure 3, is provided with the collection sound joint 201 of a disc type in the front end of pick off 20, to increase measurement effect to an Electret Condencer Microphone.In addition, because the activity range of sounds of each organ is difference to some extent, for example the movable voiceband of the heart movable voiceband that is about 20 ~ 230Hz, pulmonary is about 100 ~ 800Hz and abdominal part (is the duodenum 12 stomach, because the movable voiceband of intestinal, stomach is close) movable voiceband be about 20 ~ 500Hz, need contain hear sounds, lungs sound and intestinal sound at least so 20 of pick offs can capture the frequency range of sound.In other words, to be required to be 20 ~ 800Hz at least be good to the frequency band range of pick off 20.In addition, because it is quite faint through the signal intensity (being amplitude) of the converted primary signal of pick off 20 such as the sector of breakdown source of sound of lungs sound, and make follow-up signal handle in difficulty identify itself and noise difference, be easy to generate the situation of big quantizing distortion (Quantization error), thereby the multi-function stethoscope 2 of present embodiment also comprises a pre-amplifier 26, it couples pick off 20 and band filter set 21, the signal intensity of autobiography sensor 20 output primary signals is strengthened back beginning feed-in band filter set 21.
This band filter set 21 has a plurality of band filters, and each band filter is the frequency band that the Different Organs activity sound of corresponding human body respectively distributes, and meets the analytic signal of its frequency band with acquisition one in primary signal.Band filter set 21 in this example has three band filters 211,212,213.The frequency band of allowing of first band filter 211 is 20 ~ 230Hz, promptly a frequency meets first analytic signal that the interior acoustical signal beginning of 20 ~ 230Hz scope can form corresponding hear sounds by first band filter 211, and first band filter 211 can be made of a low pass filter and a high pass filter (scheming not shown), the cut-off frequency of low pass filter is 230Hz, so that being lower than the signal of 230Hz, frequency passes through, and then prevent illusion (anti-alias) and the out-of-band high frequency noise of filtering hear sounds, and the cut-off frequency of high pass filter is 20Hz, so that being higher than the signal of 20Hz, frequency passes through, and then the out-of-band low frequency noise of filtering hear sounds, with effective reduction situation generation probability of low-frequency disturbance improperly.Similarly, the frequency band of allowing of the second and the 3rd band filter 212,213 is respectively 100 ~ 800Hz and 20 ~ 500Hz, forming the second and the 3rd analytic signal of corresponding lungs sound and intestinal sound, and the second and the 3rd band filter the 212, the 213rd, can be constituted by a low pass filter and a high pass filter.Like this, need not change stethoscope or auscultation head (being pick off), the primary signal that is obtained with single-sensor 20 can be separated into first through band filter set 21, the second and the 3rd analytic signal, with the corresponding hear sounds of difference, lungs sound and intestinal sound, utilized different auscultation head (being pick off) to make the signal that conforms to the frequency band of hear sounds or lungs sound or intestinal sound and obviously be different from by in the feed-in stethoscope in the past, and then can solve awkward in the past problem, and because band filter 211,212,213 element cost very is lower than pick off 20, even if present embodiment is compared to the number of the band filter of stethoscope increase in the past, yet compared to the expensive mode that increases stethoscope or auscultation head, the present invention still can reach the effect that effectively reduces cost.
In addition, this routine multi-purpose electronic stethoscope 2 also comprises a main amplifier 27 that is positioned at 22 of band filter set 21 and analog-to-digital converters, with after first, second and the 3rd analytic signal amplifying signal intensity at hear sounds, lungs sound and intestinal sound respectively, beginning feed-in analog-to-digital converter 22, strengthening separating between analytic signal and noise, and then the situation that effectively reduces distorted signals takes place.Because the form of analytic signal still is an analogue signal, and microcontroller 24 can only be handled the signal of number format, so first, second that amplifies through main amplifier 27 in this example and the 3rd analytic signal meeting feed-in analog-to-digital converter 22 are to import microcontroller 24 again through analog-to-digital converter 22 digitizeds respectively.It should be noted that digitized first, second and the 3rd analytic signal are to import side by side in the microcontroller 24 with the unlike signal line in this example.
Because of this routine band filter set 21 is at hear sounds, lungs sound and the design of intestinal sound,, definition multi-purpose electronic stethoscope 2 also can be positioned at wherein a pattern so having a hear sounds pattern, a lungs sound pattern and an intestinal sound pattern.Input block 23 electrically connects microcontroller 24, imports a pattern switching command to microcontroller 24 for user, and then selects electronic stethoscope 2 in a kind of (its function will describe in detail in following paragraph) of hear sounds, lungs sound and intestinal sound pattern.The input block 23 of present embodiment has a mode selector button 231, is to produce a pattern switching command to microcontroller 24 when being pressed.
In addition, the sound of being convenient to understand by speaker 25 outputs for user is corresponding any organ, so the multi-purpose electronic stethoscope 2 of present embodiment also comprises a display 28, this display 28 is to can be a liquid crystal display and be subjected to microcontroller 24 operations, present pattern with instant playback multi-purpose electronic stethoscope 2, for example when being positioned at the hear sounds pattern, then microcontroller 24 can make display 28 show such as " hear sounds " and wait wording, or be arranged in the lungs sound pattern, then show such as " lungs sound " and wait wording, perhaps be arranged in intestinal sound pattern, then show such as " intestinal sound " and wait wording.So, user can utilize watches on the display 28 wording that shows to know the pattern that multi-purpose electronic stethoscope 2 is present easily, to reach the effect of being convenient to manipulate.
In addition, can hear the sound that inside of human body is trickle though utilize multi-purpose electronic stethoscope 2, diagnose and make the doctor can grasp more information, judge accurately but the establishment of disease still is senior doctor, this is because everyone is different fully for the perception of sound.Thereby the different judgements that influence disease of experience for making the doctor, it is necessary to come analytic signal to become by the analysis software of extraneous electronic machine, so the multi-purpose electronic stethoscope 2 of present embodiment also comprises the data transmission module 29 of an electric connection microcontroller 24, so that the purification signal is transferred to electronic machine 4, use for data analysis.So, electronic stethoscope 2 also can be used as the sound acquisition device that electronic machine is used except can undertaking stethoscope function originally, to reach multi-functional and the good effect of extendibility.This routine data transmission module 29 has general asynchronous receiving converter a 291 (Universal Asynchronous Receiver Transmitter, UART) and a data transmission interface 292, this data transmission interface 292 can be RS232, USB (universal serial bus) (UniversalSerial Bus, USB), IEEE1394, infrared ray or blue bud or the like, and general asynchronous receiving converter 291 receives the purification signals and according to microcontroller 24 controls the purification conversion of signals is become with after the data transmission standard of data transmission interface 292 conforms to, and can be passed to electronic machine 4 through data transmission interface 292.In addition, for can being controlled, user whether electronic machine 4 is given in the transmission of purification signal, input block 23 also has a transmission that is available for users to push and selects button 233, and when making microcontroller 24 receive selecting the transmission command of button 233 outputs by transmission, then the purification signal with the present pattern of correspondence is sent to data transmission module 29, through data transmission module 29 data are passed to electronic machine 4.In addition, electronic machine 4 can be the computer as Fig. 3, this computer 4 has a host computer 41, the input equipment 43 of a display 42 and such as keyboard or mouse at least, and have a phonetic analysis software in the computer 4, the diagram of utilization such as waveform represented the variation of analytic signal, can truly present wave form varies, and then can utilize the difference of waveform or data to know comparison, do more accurate judgement and need not lean on individual intuition with auxiliary doctor.
According to preceding described, in the present embodiment, when being placed in the human body surface of contiguous desire measurement organ when multi-purpose electronic stethoscope 2 startups, then pick off 20 can convert the sound of collecting to primary signal earlier, primary signal input tape bandpass filter set 21 after pre-amplifier 26 amplifies then, to be separated into corresponding hear sounds respectively, first of lungs sound and intestinal sound, the second and the 3rd analytic signal, follow these analytic signals feed-in microcontroller 24 arranged side by side behind main amplifier 27 amplifications and analog-to-digital converter 22 digitizeds, handle further to make sound, filtering noise information or the like for example, then microcontroller 24 can give speaker 25 with the analytic signal transmission of the present pattern of correspondence, user can be heard more measure the sound of organ authentic activity near desire and can more correctly judge.And when user desire switching multi-purpose electronic stethoscope 2, then can utilize the mode selector button 231 of input block 23 to select hear sounds, lungs sound or intestinal sound patterns, this moment microcontroller 24 and present pattern can be shown in display 28 and learn for user and make the analytic signal corresponding export and give speaker 25 with switching the back pattern.Thereby compared to electronic stethoscope in the past to change the sound that stethoscope or auscultation head capture different frequency bands, and the present invention utilizes band filter to capture the signal of corresponding Different Organs activity voiceband, owing to be the internal electrical signal processing, so need not changing any member, user only need not utilize simple motion to come input command (being the pattern switching command), can reach the effect that simplifies the operation, and since such as the electronic component cost of band filter far below the auscultation head, cause manufacturing cost also can decrease.
In addition, though previous embodiment starts from corresponding hear sounds respectively in microcontroller 24, the digitized first of lungs sound and intestinal sound, select one of them to handle back output in the second and the 3rd analytic signal, yet also can a switch (scheming not shown) that control by microcontroller 24 be set in pre-amplifier 26 and 21 of band filter set, for example can be the switch of three contacts, so that primary signal only flows to one of them band filter in the band filter set 21, make main amplifier 27 thereafter, analog-to-digital converter 22 all only needs to deal with at single analytic signal with microcontroller 24, and then can reach the effect of simplifying circuit structure.
It should be noted, though the multi-purpose electronic stethoscope 2 of previous embodiment is three kinds of functions that hear sounds, lungs sound and intestinal sound are listened in design, yet the frequency range that also can utilize the change tape bandpass filter is measured other organs, for example measure joint motion sound, and also can utilize and set up the band filter number, as increase to four, to increase range of application, should not be subject to aforementioned specification and disclose.
Claims (12)
1. a multi-purpose electronic stethoscope is characterized in that, comprising:
One pick off receives sound and converts thereof into the primary signal of an analog format;
One band filter set has a plurality of band filters, and respectively this band filter has the frequency band that the sound of the Different Organs of corresponding human body respectively distributes, to receive this primary signal and therefrom to capture an analytic signal that meets its frequency band;
One analog-to-digital converter receives this analytic signal and its signal format is become numeral by analog-converted;
One input block is imported a pattern switching command for user, with by selecting one in the pairing organ of this band filter;
One microcontroller receives this digital assay signal and this pattern switching command, and eliminate this analytic signal noise so that respectively this analytic signal form a purification signal and will be to purification signal output that should the pattern switching command; And
One speaker receives this purification signal and converts thereof into sound wave and plays.
2. multi-purpose electronic stethoscope as claimed in claim 1 is characterized in that:
Respectively this band filter has a low pass filter and a high pass filter.
3. multi-purpose electronic stethoscope as claimed in claim 1 is characterized in that:
This band filter set has one first band filter, and it is 20～230Hz corresponding to hear sounds and its frequency band of human body.
4. multi-purpose electronic stethoscope as claimed in claim 1 is characterized in that:
This band filter set has one second band filter, and it is 100～800Hz corresponding to lungs sound and its frequency band of human body.
5. multi-purpose electronic stethoscope as claimed in claim 1 is characterized in that:
This band filter set has one the 3rd band filter, and it is 20～500Hz corresponding to intestinal sound and its frequency band of human body.
6. multi-purpose electronic stethoscope as claimed in claim 1 is characterized in that:
This multi-purpose electronic stethoscope also comprises a pre-amplifier, and it receives this primary signal and amplifies this band filter set of back input.
7. multi-purpose electronic stethoscope as claimed in claim 1 is characterized in that:
This multi-purpose electronic stethoscope also comprises a main amplifier, in order to this analog-to-digital converter of input behind the analytic signal that amplifies this band filter set.
8. multi-purpose electronic stethoscope as claimed in claim 1 is characterized in that:
This multi-purpose electronic stethoscope also comprises a display that is subjected to this microprocessor controls, to show the content of this pattern switching command.
9. multi-purpose electronic stethoscope as claimed in claim 1 is characterized in that:
This pick off is an Electret Condencer Microphone, and the front end of this mike is provided with the collection sound joint of a disc type.
10. multi-purpose electronic stethoscope as claimed in claim 1 is characterized in that:
This multi-purpose electronic stethoscope also comprises a data transmission module, receives the purification signal of this microcontroller output and is suitable for connecting an extraneous electronic machine, so that this purification signal is imported this electronic machine.
11. multi-purpose electronic stethoscope as claimed in claim 10 is characterized in that:
This data transmission module has a general asynchronous receiving converter and a data transmission interface that is subjected to this microprocessor controls, and this general asynchronous receiving converter receives this purification signal and according to this microprocessor controls the purification conversion of signals is become to meet the form of this data transmission interface after transmit and give this data transmission interface.
12. multi-purpose electronic stethoscope as claimed in claim 11 is characterized in that:
This electronic machine is one to have the computer of the movable phonetic analysis function of human organ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021442762A CN1488319A (en) | 2002-10-08 | 2002-10-08 | Multifunctional electronic stethoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021442762A CN1488319A (en) | 2002-10-08 | 2002-10-08 | Multifunctional electronic stethoscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1488319A true CN1488319A (en) | 2004-04-14 |
Family
ID=34148452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA021442762A Pending CN1488319A (en) | 2002-10-08 | 2002-10-08 | Multifunctional electronic stethoscope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1488319A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102078201A (en) * | 2010-07-28 | 2011-06-01 | 上海理工大学 | Portable wireless electronic stethoscope |
| CN104274202A (en) * | 2013-07-10 | 2015-01-14 | 晁彦公 | Electronic stethoscope and electronic stethoscopy system |
| CN104464732A (en) * | 2013-09-20 | 2015-03-25 | 联想（新加坡）私人有限公司 | Context-based audio filter selection |
| CN105266842A (en) * | 2015-11-03 | 2016-01-27 | 江苏物联网研究发展中心 | Auscultation mode switching automatic detection digital stethoscope and auscultation mode switching detection method |
| CN105852902A (en) * | 2016-04-26 | 2016-08-17 | 江苏物联网研究发展中心 | Method and system for switching auscultation frequency range of electronic auscultator |
| CN105919622A (en) * | 2016-04-26 | 2016-09-07 | 江苏物联网研究发展中心 | Electronic stethoscope with volume adjusted by single key and method |
| CN106236130A (en) * | 2016-08-30 | 2016-12-21 | 苏州中盛纳米科技有限公司 | A kind of electronic type stethoscope based on MEMS technology |
| CN106510751A (en) * | 2016-09-28 | 2017-03-22 | 华南师范大学 | Multifunctional electronic stethoscope and auscultation system |
| CN107550515A (en) * | 2017-09-15 | 2018-01-09 | 中国科学院微电子研究所 | Stethoscope system |
| CN108348214A (en) * | 2015-07-07 | 2018-07-31 | 阿尔孔有限公司 | For by stethoscopic digitized sound and the equipment for sending it to electronic instrument |
| CN110251152A (en) * | 2018-03-12 | 2019-09-20 | 北京大学 | A kind of osteoacusis formula number auscultation system being automatically separated heart and lung sounds |
| TWI769449B (en) * | 2020-04-21 | 2022-07-01 | 廣達電腦股份有限公司 | Filtering system and filtering method |
-
2002
- 2002-10-08 CN CNA021442762A patent/CN1488319A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102078201A (en) * | 2010-07-28 | 2011-06-01 | 上海理工大学 | Portable wireless electronic stethoscope |
| CN104274202A (en) * | 2013-07-10 | 2015-01-14 | 晁彦公 | Electronic stethoscope and electronic stethoscopy system |
| CN104464732A (en) * | 2013-09-20 | 2015-03-25 | 联想（新加坡）私人有限公司 | Context-based audio filter selection |
| CN104464732B (en) * | 2013-09-20 | 2017-10-31 | 联想（新加坡）私人有限公司 | Tone filter selection based on situation |
| CN108348214A (en) * | 2015-07-07 | 2018-07-31 | 阿尔孔有限公司 | For by stethoscopic digitized sound and the equipment for sending it to electronic instrument |
| CN105266842B (en) * | 2015-11-03 | 2018-02-06 | 江苏物联网研究发展中心 | Auscultation mode switches automatic detection digital stethoscope and auscultation mode switching detection method |
| CN105266842A (en) * | 2015-11-03 | 2016-01-27 | 江苏物联网研究发展中心 | Auscultation mode switching automatic detection digital stethoscope and auscultation mode switching detection method |
| CN105852902A (en) * | 2016-04-26 | 2016-08-17 | 江苏物联网研究发展中心 | Method and system for switching auscultation frequency range of electronic auscultator |
| CN105919622A (en) * | 2016-04-26 | 2016-09-07 | 江苏物联网研究发展中心 | Electronic stethoscope with volume adjusted by single key and method |
| CN106236130A (en) * | 2016-08-30 | 2016-12-21 | 苏州中盛纳米科技有限公司 | A kind of electronic type stethoscope based on MEMS technology |
| CN106510751A (en) * | 2016-09-28 | 2017-03-22 | 华南师范大学 | Multifunctional electronic stethoscope and auscultation system |
| CN107550515A (en) * | 2017-09-15 | 2018-01-09 | 中国科学院微电子研究所 | Stethoscope system |
| CN110251152A (en) * | 2018-03-12 | 2019-09-20 | 北京大学 | A kind of osteoacusis formula number auscultation system being automatically separated heart and lung sounds |
| TWI769449B (en) * | 2020-04-21 | 2022-07-01 | 廣達電腦股份有限公司 | Filtering system and filtering method |
| US11633158B2 (en) | 2020-04-21 | 2023-04-25 | Quanta Computer Inc. | Filtering system and filtering method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100339987B1 (en) | Computer Mouse Having Stethoscope | |
| US20080273709A1 (en) | Systems and methods for tuning, analysis and display of heart sounds | |
| EP3603502A1 (en) | Physiological acoustic monitoring system | |
| US20110096936A1 (en) | Electronic stethoscope | |
| CN201755228U (en) | Wireless electrocardio (ECG) and Phonocardiogram (PCG) all-in-one machine | |
| CN1488319A (en) | Multifunctional electronic stethoscope | |
| CN105982692A (en) | Multifunctional stethoscope for broadband parameter monitoring and implementation method of multifunctional stethoscope | |
| CN2857827Y (en) | Portable foetus phonocardiograph | |
| CN105943080A (en) | Intelligent stethophone | |
| CN102008316A (en) | Auscultation sound spectrum analysis-based multifunctional digital stethoscope circuit | |
| CN201126639Y (en) | Digital television receiver with health tutelage function | |
| US20040096069A1 (en) | Electronic stethoscope | |
| CN200945165Y (en) | Wireless electronic stethoscope | |
| CN204468044U (en) | A kind of heart sound signal acquisition system | |
| CN106308847A (en) | Intelligent electronic stethoscope | |
| CN105997134A (en) | Multichannel lung sound signal collection system and method | |
| CN202235444U (en) | Electronic stethoscope | |
| CN109793533A (en) | A kind of Simple electronic stethoscope | |
| Monika et al. | Embedded Stethoscope for Real Time Diagnosis of Cardiovascular Diseases | |
| CN206453785U (en) | A kind of smart electronicses stethoscope | |
| CN206491815U (en) | A kind of household intelligent electronic stethoscope | |
| US20140012095A1 (en) | Storage control apparatus, storage control system, and storage medium | |
| CN100998510A (en) | Electronic stethophone | |
| CN218684457U (en) | Remote electronic auscultation system | |
| KR200259030Y1 (en) | Electro-stethoscope |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |