CN111407306A - Multi-channel differential respiration sound intelligent wearable monitoring system based on mobile terminal - Google Patents
Multi-channel differential respiration sound intelligent wearable monitoring system based on mobile terminal Download PDFInfo
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- CN111407306A CN111407306A CN202010218863.1A CN202010218863A CN111407306A CN 111407306 A CN111407306 A CN 111407306A CN 202010218863 A CN202010218863 A CN 202010218863A CN 111407306 A CN111407306 A CN 111407306A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B7/00—Instruments for auscultation
- A61B7/02—Stethoscopes
- A61B7/04—Electric stethoscopes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B7/00—Instruments for auscultation
- A61B7/003—Detecting lung or respiration noise
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- G—PHYSICS
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- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
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- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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Abstract
The invention discloses a multi-pass differential breath sound intelligent wearable monitoring system based on a mobile terminal, which comprises a wearable device and the mobile terminal, wherein the wearable device is provided with a wearable body, a pickup module, a signal control processing module, a first wireless transmission module and a power supply module with a wireless remote control switch, and the pickup module consists of a plurality of breath sound probes arranged at different positions of the wearable body; the signal control processing module is connected with and controls each breath sound probe, the signal control processing module is wirelessly connected with the mobile terminal through a first wireless transmission module, and the power supply module is connected with each module through a wireless remote control switch; the mobile terminal is provided with a second wireless transmission module and a monitoring application program, the monitoring application program is in wireless connection and controls the wireless remote control switch, and the signal control processing module is in wireless connection with the first wireless transmission module through the second wireless transmission module. The invention can continuously monitor the breath sounds of a plurality of parts of the patient in a non-contact way, reduces the infection risk and ensures more convenient and accurate auscultation.
Description
Technical Field
The invention relates to the technical field of medical electronics, in particular to a multi-pass differential breath sound intelligent wearable monitoring system based on a mobile terminal.
Background
In the process of diagnosing and treating patients with high infectious diseases such as novel coronary pneumonia, medical staff wearing protective clothing is difficult to routinely use a traditional stethoscope to complete auscultation, or needs to take off protective caps and masks to destroy protective surfaces to enable auscultation, so that the auscultation of respiratory sounds of patients is extremely inconvenient, monitoring of the medical staff to the patients is limited, auscultation risks of the medical staff are prevented, and burdens of the protective clothing are increased. In addition, because most pulmonary auscultations are performed on the back, many critically ill patients are at risk of developing an increased disease and experience increased discomfort when subjected to auscultation for their turns.
Most of the electronic digital stethoscopes developed in recent years can not receive signals wirelessly, and still need to be worn with earphones for auscultation, and the electronic digital stethoscopes which can receive auscultation signals wirelessly have large noise interference and no intelligent analysis. Moreover, the stethoscope still needs to be placed on the patient by the doctor during each auscultation, and the defects that the auscultation on multiple body positions of the patient cannot be carried out, the continuous auscultation and monitoring on the respiratory sounds of the multiple body positions of the patient cannot be carried out, the interference on the patient during each auscultation is more, and the like exist. In clinical practice, the most critical class I patients need to be evaluated continuously, the less critical class II patients need to be evaluated every 15 minutes, and the risky class III patients need to be evaluated every 30 minutes. However, in practical operation, the medical staff wearing the whole set of protective device frequently takes off the protective clothing for auscultation, which is not time-consuming, has a considerable risk of infection, and the critical patient is unlikely to be subjected to frequent turning over and auscultation. Clinically, the method not only needs to detect the breathing sounds of different parts, but also has very important significance for diagnosis, treatment and research of various respiratory diseases if the method can simultaneously detect, compare and continuously monitor the breathing sounds of different parts. Therefore, a respiratory sound multi-pass auscultation wearing device is strongly needed for diagnosis and treatment of infectious strong diseases such as new coronary pneumonia and various respiratory diseases, medical workers can quickly and timely auscultate respiratory sounds of multiple parts of patients without replacing protective clothing, and even can preferably perform continuous dynamic monitoring, however, research and development reports or products are not available at present.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a multi-pass differential breathing sound intelligent wearable monitoring system based on a mobile terminal, which can continuously collect multi-part breathing sounds of a patient in a non-contact manner, reduce the infection risk and make auscultation more convenient and accurate.
The purpose of the invention is realized by the following technical scheme: a multi-pass differential breath sound intelligent wearable monitoring system based on a mobile terminal comprises a wearable device and the mobile terminal, wherein,
the wearable device is provided with a wearable body, a pickup module arranged on the wearable body, a signal control processing module, a first wireless transmission module and a power supply module with a wireless remote control switch, wherein the pickup module consists of a plurality of breath sound probes arranged at different positions of the wearable body and is used for detecting breath sounds at different parts of a human body; the signal control processing module is connected with and controls each breath sound probe, is wirelessly connected with the mobile terminal through the first wireless transmission module and sends a processed breath sound detection signal to the mobile terminal; the power supply module is connected with each module through the wireless remote control switch and supplies power to each module;
the mobile terminal is provided with a second wireless transmission module and a monitoring application program, the monitoring application program is in wireless connection and controls the wireless remote control switch, sends a control instruction to the signal control processing module through the second wireless transmission module and the first wireless transmission module and receives breath sound detection signals processed by the signal control processing module according to the control instruction, and performs spectrum waveform analysis, feature extraction, waveform display, difference comparison and result display and storage on the signals.
Preferably, the wearing body is a vest or a back sticker which is made of waterproof breathable wear-resistant cloth and provided with an inner lining, and sound insulation cotton is filled between each breathing sound probe and each other module of the wearing body.
Preferably, the pickup module consists of 6-16 breath sound probes; the breathing sound probes are distributed at the positions of the wearing body corresponding to the lung tips, the lung gates and the lung bottom parts on the left side and the right side of the back of a human body, or the positions of the wearing body corresponding to the lung tips, the lung gates and the lung bottom parts on the left side and the right side of the chest of the human body and the upper part and the lower part on the two sides of the axillary midline, and the number of the breathing sound probes at the set positions is 1 or more than 1.
Preferably, the breath sound probe includes pickup cavity and miniature pickup sensor, and miniature pickup sensor arranges the pickup cavity in.
Preferably, the signal control processing module comprises a preposed differential amplification filtering module and a microprocessor chip, the microprocessor chip is connected with each breath sound probe through the preposed differential amplification filtering module and controls each breath sound probe to pick up sound and control the preposed differential amplification filtering module to perform preposed amplification, differential comparison analysis, denoising and band-pass filtering on breath sound detection signals, the microprocessor chip is wirelessly connected with the mobile terminal through a first wireless transmission module and sequentially transmits the processed detection signals of each breath sound probe to the mobile terminal according to a control instruction of the mobile terminal according to a set sequence or transmits the detection signals of specific breath sound probes according to needs.
Furthermore, in the pre-differential amplification filtering module, the band pass of the breath sound detection signal is 100-1500 Hz.
Preferably, the power module comprises a power supply, a wireless remote control switch and a charging socket, and the charging socket is connected with the power supply; the wireless remote control switch is provided with a WiFi wireless switch circuit module connected with a power supply, and the wireless remote control switch controls the power supply or the power failure of the power supply through the WiFi wireless remote control switch circuit module;
the mobile terminal is correspondingly provided with a WiFi wireless transmission module, and the WiFi wireless transmission module is connected with a WiFi wireless remote control switch circuit module of the wireless remote control switch through WiFi.
Furthermore, the power supply is composed of a plurality of rechargeable flexible lithium batteries, and the rechargeable flexible lithium batteries provide corresponding voltage and current for other modules of the wearable device through a series connection and parallel connection combination mode.
Preferably, the first wireless transmission module and the second wireless transmission module are both bluetooth wireless transmission modules; the mobile terminal comprises a smart phone, a notebook computer, a tablet computer, multimedia equipment and streaming media equipment.
Preferably, the same mobile terminal is respectively connected with a plurality of different wearable devices, and the detection signals and the analysis results of the wearable devices are wirelessly transmitted to a hospital center monitoring platform, a remote consultation platform, a cloud database or a cloud server through a monitoring application program.
Compared with the prior art, the invention has the following advantages and effects:
(1) the invention relates to a multi-pass differential breath sound intelligent wearable monitoring system based on a mobile terminal, which comprises a wearable device and the mobile terminal, wherein the wearable device is provided with a wearable body, a pickup module, a signal control processing module, a first wireless transmission module and a power supply module with a wireless remote control switch, wherein the pickup module is arranged on the wearable body, consists of a plurality of breath sound probes arranged at different positions of the wearable body and is used for detecting breath sounds at different parts of a human body; the signal control processing module is connected with and controls each breath sound probe, is connected with the mobile terminal through the first wireless transmission module and sends a processed breath sound detection signal to the mobile terminal; the power supply module is connected with each module through the wireless remote control switch and supplies power to each module; the mobile terminal is provided with a second wireless transmission module and a monitoring application program, the monitoring application program is wirelessly connected with the wireless remote control switch and controls the wireless remote control switch to be connected with or disconnected from a power supply, and sends a control instruction to the signal control processing module through the second wireless transmission module and the first wireless transmission module, receives breath sound detection signals processed by the signal control processing module according to the control instruction, and performs spectrum waveform analysis, feature extraction, waveform display, differential comparison and result display and storage on the signals. Therefore, medical staff can conveniently and wirelessly start the wearable device on the patient body through the mobile terminal to complete contactless multichannel respiratory sound auscultation at any time, the time and the times of close contact between the medical staff and the infectious disease patient for completing auscultation are reduced, and the risk of infection of the medical staff is reduced. In addition, the wearable device can be used for a plurality of days after being worn by a patient once, so that the times and the amplitude of changing the position of the patient for auscultation can be reduced, the risks of difficulty in breathing and aggravation of the condition of the patient caused by the difficulty can be avoided, and the detection and analysis of the condition of the patient can be facilitated.
(2) The system of the invention can restrain common mode noise and highlight the difference of breath sounds of all parts by arranging the preposed differential amplification filtering module, thereby being beneficial to improving the quality and the processing efficiency of detection signals.
(3) The system has the functions of multi-channel simultaneous auscultation, comparative analysis and continuous monitoring, can obtain different parts of respiratory diseases such as pneumonia and the like and the change condition of the respiratory diseases along with time, can display the frequency spectrum waveform of a respiratory sound signal and obtain richer information by combining with the respiratory sound frequency spectrum quantitative analysis, enables the auscultation to be more accurate and quantitative, is beneficial to diagnosis and research of various respiratory diseases, and reveals the relation and the rule of different respiratory sound characteristics and various respiratory diseases and disease conditions.
(4) The system can store a plurality of breathing sound signals of all parts through the monitoring application program, is convenient to retrospectively listen and carry out comparative analysis along with space and time changes, so that richer information about respiratory diseases is obtained, can realize disease data sharing by cloud transmission of the breathing sound detection signals and the analysis result of the monitoring application program, has important significance for respiratory disease research, and is also convenient for taking timely countermeasures and overall protection work on the problems of disease changes, sputum retention, intubation depth and the like.
(5) The system can intelligently identify and analyze various special cardiopulmonary signal functions through the mobile terminal or an artificial intelligence expert system on a connected platform, so that respiratory sound characteristic signals which are difficult to listen to or easy to miss by common stethoscopes or common doctors can be accurately received and analyzed, intelligent diagnosis opinions are given or alarm signals are provided for problems of sputum retention, intubation depth and the like, the diagnosis accuracy is improved, and the system is also beneficial to researching and disclosing the relation and the rule of different respiratory sound frequency spectrum characteristics and various respiratory diseases and disease conditions.
Drawings
Fig. 1 is a schematic diagram of a multi-pass differential breath sound intelligent wearable monitoring system based on a mobile terminal.
Fig. 2 is a schematic diagram of the system of fig. 1.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited thereto.
Examples
The embodiment discloses a multichannel difference breathing sound intelligence wearing formula monitoring system based on mobile terminal, as shown in fig. 1 and fig. 2, including wearing formula device and mobile terminal 1.
Wherein, wearing formula device has and dresses the body, sets up in the pickup module of wearing the body, signal control processing module, first wireless transmission module and the power module who takes wireless remote switch.
Wear the body and be by the undershirt 2 or the back of the body subsides 3 that have the clamp lining that waterproof ventilative wear-resisting cloth made, and wear the body and all fill soundproof cotton between each sound probe of breathing and each other module, both can play the sound insulation effect, can fix each part again and make more comfortable when wearing the formula device in the same direction as pasting.
Each breath sound probe comprises a sound collecting cavity for collecting sound and a micro sound collecting sensor arranged in the sound collecting cavity, wherein the micro sound collecting sensor can be a micro electro mechanical digital microphone or a micro piezoelectric microphone.
As shown in fig. 1, the vest 2 is a double-layer clip made of wear-resistant cloth, the total thickness is 3-5 mm, the vest can be fastened and worn on a user body through magic tapes, and the breathing sound probes 41 are respectively arranged at the lung tip, the lung gate and the lung bottom parts of the left side and the right side of the chest and the back of the human body and the upper and lower parts of the two sides of the axillary midline. The back sticker 3 is a thin clamping bag made of wear-resistant cloth, the width of the thin clamping bag is 200-300 mm, the length of the thin clamping bag is 300-400 mm, the thickness of the thin clamping bag is 3-5 mm, and the thin clamping bag can be fastened on a user through a belt with magic tapes on two sides. The back patch and the belt thereof are provided with 6-8 respiration sound probes 41 which are respectively arranged at the lung tip, the lung portal and the lung bottom corresponding to the two sides of the back of the human body, and the rest respiration sound probes can also be arranged at the two sides of the axillary midline.
The signal control processing module can be used for processing the breath sound detection signals, is connected with and controls each breath sound probe, is in wireless connection with the mobile terminal through the first wireless transmission module, and sends the processed breath sound detection signals to the mobile terminal.
As shown in fig. 2, the signal control processing module specifically includes a pre-differential amplification filtering module 5 and a microprocessor chip 6, and the microprocessor chip is connected to each breath sound probe through the pre-differential amplification filtering module, and controls each breath sound probe to pick up sound and controls the pre-differential amplification filtering module to pre-amplify, differentially compare and analyze, denoise and band-pass filter the breath sound detection signal. The front differential amplification filtering module can restrain common mode noise, highlight the difference of breathing sounds of all parts and carry 100-1500 Hz breathing sound detection signals.
The microprocessor chip is wirelessly connected with the mobile terminal 1 through the first wireless transmission module 7, and sequentially transmits the processed detection signals of each breath sound probe to the mobile terminal according to a set sequence or transmits the detection signals of specific breath sound probes according to the requirement according to a control instruction of the mobile terminal.
The first wireless transmission module 7 of this embodiment is a bluetooth wireless transmission module, but may be another transmission module capable of wirelessly communicating with the mobile terminal in other embodiments.
The power supply module 8 is connected with other modules of the wearable device through the wireless remote control switch and supplies power to the modules. The power supply module comprises a power supply 10 and a charging socket 11 besides the wireless remote control switch 9. The power supply is composed of a plurality of rechargeable flexible lithium batteries, and the rechargeable flexible lithium batteries provide corresponding voltage and current for other modules of the wearable device in a series and parallel connection mode. The charging socket is connected with a power supply and is responsible for charging and inputting the power supply.
In the vest 2 shown in fig. 1, the power supply consists of 12 4.2V rechargeable lithium batteries, and the wearable device can work continuously for 4 hours after one charge; in the back patch 3, the power supply consists of 9 4.2V rechargeable lithium batteries, and the wearable device can continuously work for 8 hours after one-time charging.
The wireless remote control switch is provided with a WiFi wireless remote control switch circuit module connected with a power supply, and the wireless remote control switch controls the power supply or the power failure of the power supply through the WiFi wireless remote control switch circuit module.
The mobile terminal 1 is provided with a second wireless transmission module and a monitoring application program, the monitoring application program is in wireless connection and controls the wireless remote control switch, and sends a control instruction to a signal control processing module of the wearable device through the second wireless transmission module and the first wireless transmission module and receives breath sound detection signals processed by the signal control processing module according to the control instruction, and performs frequency spectrum waveform analysis, feature extraction, waveform display, difference comparison of feature differences of breath sounds of all parts on the signals, and display and storage of a final analysis result.
The mobile terminal is correspondingly provided with a WiFi wireless transmission module, and the WiFi wireless transmission module is connected with a WiFi wireless remote control switch circuit module of the wireless remote control switch 9 through WiFi.
The second wireless transmission module is a bluetooth wireless transmission module, and in other embodiments, the second wireless transmission module may also be another transmission module capable of wirelessly communicating with the first wireless transmission module.
In this embodiment, the mobile terminal includes a smart phone, a notebook computer, a tablet computer, a multimedia device, and a streaming media device, and the monitoring application program may specifically be an app client or a wechat applet.
The wearable devices of a plurality of differences can be connected with same mobile terminal, therefore this mobile terminal can monitor the wearable device of a plurality of differences respectively. The mobile terminal can also wirelessly transmit the detection signal and the analysis result of the wearable device to a hospital center monitoring platform, a remote consultation platform, a cloud database or a cloud server through a monitoring application program, so that the disease data sharing is realized.
In this embodiment, the working process of the multi-pass differential breath sound intelligent wearable monitoring system based on the mobile terminal is as follows:
s1, the patient with respiratory diseases such as pneumonia wears the wearable device.
S2, medical staff opens the monitoring application program on the mobile terminal, then opens the remote switch and issues corresponding control instructions through WiFi, so that the power module supplies power, and each module starts to work:
the breath sound probes continuously collect the breath sounds of multiple parts of a patient, the signal control processing module performs pre-amplification, differential comparison analysis, denoising and band-pass filtering on breath sound detection signals, and then the processed detection signals of the breath sound probes or the detection signals of specific breath sound probes are sequentially and wirelessly transmitted to the mobile terminal according to a set sequence.
When the wearing formula device is not enough at the electric quantity, charge power module through charging cable and charging socket cooperation.
S3, medical staff receives and plays the breath sound detection signal sound and display signal waveform on the monitoring application program, and performs spectrum waveform analysis, feature extraction, waveform display and difference comparison on the signal, so as to obtain the condition that the breath sound of patients with respiratory diseases such as pneumonia changes at different positions and along with time, and simultaneously performs cloud transmission on the data.
Therefore, the medical staff can listen to and watch or retrospectively listen to and watch the multi-part breath sounds of the patient in real time on the monitoring application program, auscultation, analysis and continuous dynamic monitoring are carried out on the multi-part breath sounds of the patient quickly and timely under the condition of no contact with the patient, and the auscultation is more accurate and quantitative. In addition, various special cardiopulmonary signal functions can be intelligently identified and analyzed through an artificial intelligence expert system on the mobile terminal or the connected platform, relevant diagnosis opinions are given, or alarm signals are provided for the problems of sputum retention, intubation depth and the like, and the method is also helpful for researching and disclosing the relation and the law of different respiratory audio spectrum characteristics and various respiratory diseases and disease conditions.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. A multi-pass differential breath sound intelligent wearable monitoring system based on a mobile terminal is characterized by comprising a wearable device and the mobile terminal, wherein,
the wearable device is provided with a wearable body, a pickup module arranged on the wearable body, a signal control processing module, a first wireless transmission module and a power supply module with a wireless remote control switch, wherein the pickup module consists of a plurality of breath sound probes arranged at different positions of the wearable body and is used for detecting breath sounds at different parts of a human body; the signal control processing module is connected with and controls each breath sound probe, is wirelessly connected with the mobile terminal through the first wireless transmission module and sends a processed breath sound detection signal to the mobile terminal; the power supply module is connected with each module through the wireless remote control switch and supplies power to each module;
the mobile terminal is provided with a second wireless transmission module and a monitoring application program, the monitoring application program is in wireless connection and controls the wireless remote control switch, sends a control instruction to the signal control processing module through the second wireless transmission module and the first wireless transmission module and receives breath sound detection signals processed by the signal control processing module according to the control instruction, and performs spectrum waveform analysis, feature extraction, waveform display, difference comparison and result display and storage on the signals.
2. The multi-pass differential breath sound intelligent wearable monitoring system based on the mobile terminal according to claim 1, wherein the wearing body is a vest or a back patch with a lining made of waterproof breathable wear-resistant cloth, and sound insulation cotton is filled between each breath sound probe and each other module.
3. The multi-pass differential breath sound intelligent wearable monitoring system based on the mobile terminal of claim 1, wherein the pickup module consists of 6-16 breath sound probes; the breathing sound probes are distributed at the positions of the wearing body corresponding to the lung tips, the lung gates and the lung bottom parts on the left side and the right side of the back of a human body, or the positions of the wearing body corresponding to the lung tips, the lung gates and the lung bottom parts on the left side and the right side of the chest of the human body and the upper part and the lower part on the two sides of the axillary midline, and the number of the breathing sound probes at the set positions is 1 or more than 1.
4. The mobile terminal-based multi-pass differential breath sound intelligent wearable monitoring system of claim 1, wherein the breath sound probe comprises a pickup cavity and a micro pickup sensor, and the micro pickup sensor is disposed in the pickup cavity.
5. The multi-pass differential breath sound intelligent wearable monitoring system based on the mobile terminal of claim 1, wherein the signal control processing module comprises a pre-differential amplification filtering module and a microprocessor chip, the microprocessor chip is connected with each breath sound probe through the pre-differential amplification filtering module and controls each breath sound probe to pick up sound and control the pre-differential amplification filtering module to pre-amplify, differentially compare, denoise and band-pass filter the breath sound detection signal, the microprocessor chip is wirelessly connected with the mobile terminal through a first wireless transmission module and sequentially transmits the processed detection signal of each breath sound probe to the mobile terminal according to a set sequence or transmits the detection signal of a specific breath sound probe according to needs according to a control instruction of the mobile terminal.
6. The multi-pass differential breath sound intelligent wearable monitoring system based on the mobile terminal of claim 5, wherein in the pre-differential amplification filtering module, the band pass of the breath sound detection signal is 100-1500 Hz.
7. The mobile terminal-based multi-pass differential breath sound intelligent wearable monitoring system of claim 1, wherein the power module comprises a power supply, a wireless remote switch and a charging socket, and the charging socket is connected with the power supply; the wireless remote control switch is provided with a WiFi wireless switch circuit module connected with a power supply, and the wireless remote control switch controls the power supply or the power failure of the power supply through the WiFi wireless remote control switch circuit module;
the mobile terminal is correspondingly provided with a WiFi wireless transmission module, and the WiFi wireless transmission module is connected with a WiFi wireless remote control switch circuit module of the wireless remote control switch through WiFi.
8. The mobile terminal-based multi-pass differential breath sound intelligent wearable monitoring system of claim 7, wherein the power supply is composed of a plurality of rechargeable flexible lithium batteries, and the plurality of rechargeable flexible lithium batteries provide corresponding voltage and current for other modules of the wearable device through a series and parallel connection mode.
9. The multi-pass differential breath sound intelligent wearable monitoring system based on the mobile terminal of claim 1, wherein the first wireless transmission module and the second wireless transmission module are both bluetooth wireless transmission modules; the mobile terminal comprises a smart phone, a notebook computer, a tablet computer, multimedia equipment and streaming media equipment.
10. The multi-pass differential breath sound intelligent wearable monitoring system based on the mobile terminal according to claim 1, wherein the same mobile terminal is connected with a plurality of different wearable devices respectively, and the detection signals and the analysis results of the wearable devices are wirelessly transmitted to a hospital central monitoring platform, a remote consultation platform, a cloud database or a cloud server through a monitoring application program.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112245191A (en) * | 2020-10-27 | 2021-01-22 | 湖南万脉医疗科技有限公司 | Breathing sound intelligence wearing formula monitoring system |
| TWI778505B (en) * | 2021-01-27 | 2022-09-21 | 淇譽電子科技股份有限公司 | A point-pressed audio pickup apparatus |
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2020
- 2020-03-25 CN CN202010218863.1A patent/CN111407306A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112245191A (en) * | 2020-10-27 | 2021-01-22 | 湖南万脉医疗科技有限公司 | Breathing sound intelligence wearing formula monitoring system |
| TWI778505B (en) * | 2021-01-27 | 2022-09-21 | 淇譽電子科技股份有限公司 | A point-pressed audio pickup apparatus |
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