CN107233108A - A kind of wearable sticker of acquisition volume message number - Google Patents
A kind of wearable sticker of acquisition volume message number Download PDFInfo
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- CN107233108A CN107233108A CN201710582219.0A CN201710582219A CN107233108A CN 107233108 A CN107233108 A CN 107233108A CN 201710582219 A CN201710582219 A CN 201710582219A CN 107233108 A CN107233108 A CN 107233108A
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- sound
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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
- A61B7/026—Stethoscopes comprising more than one sound collector
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B7/00—Instruments for auscultation
- A61B7/006—Detecting skeletal, cartilage or muscle noise
-
- 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
- A61B2562/0204—Acoustic sensors
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Acoustics & Sound (AREA)
- Physics & Mathematics (AREA)
- Rheumatology (AREA)
- Pulmonology (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
Abstract
A kind of wearable sticker of acquisition volume message number, including soft shell, flexible battery and flexible circuit module, soft shell is arranged to be suitable to directly be affixed on skin surface or be attached at garment interior so that the close contact of sound transducer and skin, vibration signal is converted to electric signal by sound transducer, analog sensor interface is connected with sound transducer, electric signal is sent to analog filter block, analog filter block is filtered conditioning to electric signal, amplification makes the requirement that it meets A/D samplings, the control of microcontroller circuit control module carries out A/D samplings, data after processing are wirelessly transmitted to host computer by wireless sending module, power supply module is powered for flexible circuit module.The wearable sticker is attached at human skin or is attached on the inside of worn clothes, the human acoustical signal at various positions can be detected and be handled, and possesses high portability and in real time detection.
Description
Technical field
The present invention relates to a kind of wearable sticker of acquisition volume message number.
Background technology
Carry substantial amounts of human health information in the voice signal of human body, such as doctor can be by the heart sound and lung of patient
Sound, to judge whether it is cardiovascular healthy, perfect with lung function.
Traditional detection mode arrives hospital's auscultation, it is necessary to which patient is intermittent, then judges by doctor the concrete condition of patient,
Such a mode is without perspective, it is impossible in daily life, points out the state of an illness of patient；Patient is also required to remotely to hospital simultaneously
Waiting is with checking.
Existing Medical Equipment needs patient to rest on hospital's waiting for a long time, and special instrument can not be continuous
Detection, is so difficult to accomplish being accurately positioned for disease；Traditional stethoscope is difficult to identify that the trickle sound of comparison, and doctor is listening
It can also be disturbed during examining by environment；In addition, also having the joint sound of some human bodies and pulse sound to be current auscultation system
It can not monitor, such signal medically equally has medical value.
Therefore, it is necessary to set up fairly perfect human acoustical signal's detecting system, and by this system with it is wearable
Coordinate, in the case of realizing wearing comfort, detection, easy detection in real time.
The content of the invention
It is a primary object of the present invention to overcome the deficiencies in the prior art, there is provided a kind of wearable card of acquisition volume message number
Patch.
To achieve the above object, the present invention uses following technical scheme：
A kind of wearable sticker of acquisition volume message number, including soft shell, flexible battery and flexible circuit module, it is described
Flexible circuit module includes the sound transducer being arranged at outside the soft shell and the simulation being arranged in the soft shell
Sensor interface, analog filter block, power supply module, microcontroller circuit control module, wireless sending module, it is described soft
Property shell be arranged to be suitable to directly to be affixed on skin surface or be attached at garment interior so that the sound transducer and skin it is tight
Contiguity is touched, and vibration signal is converted to electric signal, the analog sensor interface and the sound sensor by the sound transducer
Device is connected, and electric signal is sent into the analog filter block, the analog filter block is filtered conditioning to electric signal, put
It meets the requirement that A/D samples to ambassador, and the microcontroller circuit control module control carries out the A/D samplings, after processing
Data are wirelessly transmitted to host computer by the wireless sending module, and the power supply module supplies for the flexible circuit module
Electricity.
Further：
The material of the soft shell is silica gel or TPU, is completed by way of mold or 3D printing, is arranged to Grazing condition
Be placed directly in chest, belly, wrist, Bones and joints or ligament junction, pass through the sound transducer extract heart sound, lung
Sound, breath sound, peristaltic sound, pulse tone, bone sound, joint sound.
The analog sensor interface in the way of FPC connector with the sound transducer wired connection.
The sound transducer is encapsulated as lamelliform complete soft structure.
The sound transducer is PVDF piezoelectric film sensors.
The sound transducer includes two PVDF piezoelectric membranes, is respectively placed in heart with wrist to detect heart sound and arteries and veins sound
Signal.
The analog filter block includes difference channel, 4 ranks-Butterworth LPF and the main amplification being sequentially connected
Circuit, the difference channel suppression common mode signal simultaneously amplifies useful signal, and 4 ranks-Butterworth LPF eliminates high
Band noise；Signal is adjusted to what A/D sampled and adopts scope by the main amplifying circuit.
The multiplication factor of the difference channel is 30 times, and the cut-off frequency of 4 ranks-Butterworth LPF is
500Hz。
The microcontroller circuit control module includes ADC and DSP module, and the ADC is filtered to the simulation
Signal after the processing of ripple module filtered carries out A/D samplings, and the DSP module control ADC is sampled, and to the ADC
Signal after processing carries out digital processing.
For heart sound in collection, the DSP module includes 4 ranks-Butterworth band logical that free transmission range is 30Hz~150Hz
Wave filter；For collection arteries and veins sound, the DSP module includes 4 ranks-Butterworth that free transmission range is free transmission range 30Hz~90Hz
Bandpass filter.
Beneficial effects of the present invention：
The present invention provides a kind of wearable sticker of acquisition volume message number.From medical angle, the voice signal of human body
It is with larger medical value, such as：Heart sound, lungs sound, breath sound, arteries and veins sound, joint sound etc.；The motion of each organ, it is each in vivo
Vibration signal can be reached body surface by tissue；Sensor is attached at skin surface by the present invention by the way of flexible sticker, as long as
The frequency of its sound is in the effective working frequency range of sensor, and sensor can carry out signal conversion, sound letter to the voice signal
Number be converted to electric signal；The processing such as analog filtering, amplification, A/D samplings are carried out to signal again, are finally obtained with larger medical science valency
The body sound data of value.The sticker of the present invention is attached at human skin or worn clothing surface, can pass through multiple Flexible Nodes
Circuit, in places such as the shirtfront of human body, belly, wrist, joint connections, to the heart sound of human body, lungs sound, peristaltic sound, arteries and veins sound, joint
The voice signal of sound etc. is extracted；In real time, the detection human acoustical signal of multinode, then send the signal to host computer such as mobile phone
Or Medical Devices are handled, shown and stored, and doctor can be sent to by Internet or further medical science algorithm is carried out sentenced
Disconnected, the real-time monitoring and tele-medicine for realizing disease are detected.
The specific advantage of the embodiment of the present invention has：
1) sticker Grazing condition material makes, flexible base material make to wear it is more comfortable, do not influence the work of user with
Life；
2) when sticker solves detection human acoustical signal in the past, cumbersome, inconvenient puzzlement, wireless transmission means are detected
Make detection more convenient, can accomplish to detect in real time whenever and wherever possible；
3) sticker not only can detect the signal of heart sound, lungs sound, breath sound etc., also can detect the tradition such as arteries and veins sound, joint sound and sets
Standby non-detectable voice signal, is that basis has been opened up in the research of health and human body signal；
4) detection mode of multinode is easily realized, in information extraction, accomplishes the sound letter as much as possible for extracting and wanting
Breath, and the relevance between a signal can be found by way of Digital Signal Analysis and Processing.
Brief description of the drawings
Fig. 1 is the circuit block diagram of the wearable sticker of the embodiment of the present invention.
Fig. 2 is the test point schematic diagram of the embodiment of the present invention.
Fig. 3 is the sticker mounted inside figure of the embodiment of the present invention；
Fig. 4 is the sticker exterior view of the embodiment of the present invention.
Embodiment
Embodiments of the present invention are elaborated below.It is emphasized that what the description below was merely exemplary,
The scope being not intended to be limiting of the invention and its application.
Refering to Fig. 1 to Fig. 4, in one embodiment, including soft shell 08, flexible battery 09 and flexible circuit module
11, the flexible circuit module 11 includes the sound transducer 01 being arranged at outside the soft shell 08 and is arranged at the flexibility
Analog sensor interface 02, analog filter block 03 in shell 08, power supply module 04, microcontroller circuit control module
(specifically may include ADC 05 and DSP module 06), wireless sending module 07, the soft shell 08 are arranged to directly be affixed on
Skin surface is attached at garment interior so that the close contact of the sound transducer 01 and skin, the sound transducer 01
Vibration signal is converted into electric signal, the analog sensor interface 02 is connected with the sound transducer 01, electric signal is passed
The analog filter block 03 is delivered to, the analog filter block 03, which is filtered conditioning, amplification to electric signal, makes it meet A/D
The requirement of sampling, the microcontroller circuit control module control carries out the A/D samplings, and the data after processing are by described wireless
Sending module 07 is wirelessly transmitted to host computer 10, and the power supply module 04 is that the flexible circuit module is powered.
The soft shell 08 can be completed by flexible materials such as silica gel, TPU by way of mold or 3D printing.It is described
Reasonable Arrangement internal components are put in soft shell 08, reserve the communication interface and power input interface of sensor, in addition,
Viscose glue position and required weaving position 12 can have been reserved.
Shell 08 is can directly be affixed on skin surface, it is possible to use textile technology, and the shell 08 is nested or stick on
Garment interior, it is ensured that the close contact of sensor and skin.
Whole equipment can be Grazing condition, can be placed directly in chest, belly, wrist, Bones and joints or ligament junction, directly
Connect and the human acoustical signal for placing position is extracted.
Vibration signal is converted to electric signal by the sound transducer 01, and the analog sensor interface 02 is with FPC or FFC
The mode of connector, with the wired connection of sound transducer 01, the analog filter block 03 is sent to by electric signal.
It is different according to the position placed in human body surface refering to Fig. 2, the extractible signal bag of sound transducer 01
Include：Breath sound V1, lungs sound V2, heart sound V3, pulse tone V4, peristaltic sound V5, muscle sound V6, joint sound V7 and bone sound etc. are because of people
The voice signal that body organ movement produces.By multiple Flexible Node circuits, it can connect in the shirtfront of human body, belly, wrist, joint
The place such as connect, the voice signals such as the heart sound of human body, lungs sound, peristaltic sound, arteries and veins sound, joint sound are extracted.Sound transducer 01 is encapsulated
For slice-shaped, complete soft structure, the material of sensor outer housing 08 does not have excitant to human body, and sensor should have sensitivity height, work
With the wide, linearity characteristic such as preferably, it is suitable for the extraction of body sounds information.The sensor profile of selection is sheet type, small
Encapsulating structure, is easy to attach.
The analog filter block 03 is nursed one's health electric signal, amplification, electric signal is satisfied with A/D sample range；It is described
Analog filter block 03 can select 4 ranks-Butterworth filter, the pretreatment carried out to electric signal, do the preparation of digital filtering.
The analog filter block 03 may include difference channel, 4 ranks-Butterworth LPF and main amplifying circuit.
Difference channel suppression common mode signal, amplifies useful signal；4 ranks-Butterworth LPF eliminates high band noise, it is ensured that filter
Ripple device leads to the integrality of inband signaling；Main amplifying circuit, which adjusts signal to ADC 05, can adopt scope.
Because measured signal is more, different signal is in different frequency ranges, and it is simple logical that the filter circuit of selection is tried one's best
With filtering out unnecessary high-frequency noise, it is ensured that the integrality of signal.
The microcontroller circuit control module can include ADC 05 and DSP module 06, the control ADC moulds of DSP module 06
Signal after the processing of the sampling filter of block 05, according to required signal type, numeral is carried out to the signal after the processing of ADC 05
Processing；Data after processing are sent to host computer 10 by wireless sending module 07 reprocesses.
The power supply module 04 is powered for flexible circuit module, and flexible battery 09 is 3.7V, is connected the power supply and is supplied
Electric module 04.Power module in flexible circuit module can provide for circuit node：The differences such as 2V, 3.3V, positive and negative 5V need electricity
Pressure.
As Figure 1-Figure 4, the wearable sticker of a kind of specific embodiment, including：(PVDF piezoelectricity is passed sound transducer 01
Sensor), it is analog sensor interface 02, analog filter block 03, power supply module 04, ADC 05, DSP module 06, wireless
Sending module 07, soft shell 08,09 battery 09；Circuit block diagram is as shown in Figure 1.
Wearable sticker can simultaneously be detected in the different parts of human body when in use；In use, host computer 10 can respectively with
Detection node connects to form connec-tionless network, is wirelessly transferred the voice data for gathering each detection node.
In the present embodiment, sound transducer 01 selects PVDF piezoelectric membranes, and two sensors are respectively placed in into heart and hand
Wrist, detection heart sound and arteries and veins message number.
FPC flexible circuit modules are provided with analog sensor interface 02, and 2 signal wires of PVDF piezoelectric transducers are connected to mould
Intend sensor interface 02, analog sensor interface 02 is connected to the difference channel of analog filter block 03, and difference channel suppresses altogether
Mould signal, amplifies useful signal, and the difference amplifier of difference channel selects TI instrument amplifier INA118,30 times of multiplication factor；
Again by 4 ranks-Butterworth LPF of the signal by analog filter block 03, cut-off frequency is 500Hz, eliminates high frequency band
Noise, it is ensured that the integrality of signal in filter passband；, will finally by main amplifying circuit of the signal by analog filter block 03
Signal, which is adjusted to ADC 05, can adopt scope, resupply ADC 05 and sample.
After ADC 05 is sampled, due to voice signal it is general in 30Hz~500Hz or so, it is necessary to higher sample rate, because
This directly upper former data that pass may cause the data volume being wirelessly transferred excessive, and therefore, first ADC 05 is adopted by DSP module 06
Signal after sample filtering process carries out Digital Signal Processing, then is sent signal after processing to host computer by wireless sending module 07
10 displays and processing.The present embodiment, DSP module 06 is 4 ranks-Butterworth band for the DSP digital filters that middle heart sound is set
Bandpass filter, free transmission range 30Hz~150Hz；The DSP digital filters that DSP module 06 is set for arteries and veins sound are fertile for 4 ranks-Bart
This bandpass filter, free transmission range 30Hz~90Hz.In the present embodiment, the chip of wireless sending module 07 selects TI CC2650
Low-power consumption, BLE chips.
After the signal that the wireless terminal receptions such as mobile phone are sent to wireless sending module 07, to signal storage, display, locate again
Reason, stored signal can be supplied to the judgement of mobile phone algorithm, also can reach doctor PC by Internet in time, algorithm or doctor are to disease
Disease carries out anticipation.
The microprocessor with DSP with less radio-frequency function can be used in microcontroller circuit control module and wireless sending module
Device realizes that the quantity of microprocessor is according to depending on use requirement；If microprocessor has DSP and less radio-frequency function, 1 simultaneously
Microprocessor, if not have simultaneously, then can select 2 microprocessors, with the mode mailing address that near field is wired or wireless
Reason.
In summary, the wearable sticker of present invention record human acoustical signal, can be by with upper type, can be to different
Human acoustical signal is detected with analyzing, and possesses high portability, real-time, and can extract different voice signals simultaneously.
Above content is to combine specific/preferred embodiment made for the present invention be further described, it is impossible to recognized
The specific implementation of the fixed present invention is confined to these explanations.For general technical staff of the technical field of the invention,
Without departing from the inventive concept of the premise, it can also make some replacements or modification to the embodiment that these have been described,
And these are substituted or variant should all be considered as belonging to protection scope of the present invention.
Claims (10)
1. a kind of wearable sticker of acquisition volume message number, it is characterised in that including soft shell, flexible battery and flexible circuit
Module, the flexible circuit module includes the sound transducer being arranged at outside the soft shell and is arranged at the soft shell
Interior analog sensor interface, analog filter block, power supply module, microcontroller circuit control module, wireless transmission mould
Block, the soft shell be arranged to be suitable to directly be affixed on skin surface or be attached at garment interior so that the sound transducer and
Vibration signal is converted to electric signal by the close contact of skin, the sound transducer, the analog sensor interface with it is described
Sound transducer is connected, and electric signal is sent into the analog filter block, the analog filter block is filtered to electric signal
Ripple conditioning, amplification make its requirement for meeting A/D samplings, and the microcontroller circuit control module control carries out the A/D samplings,
Data after processing are wirelessly transmitted to host computer by the wireless sending module, and the power supply module is the flexible circuit
Module for power supply.
2. wearable sticker as claimed in claim 1, it is characterised in that the material of the soft shell is silica gel or TPU, is led to
The mode for crossing mold or 3D printing is completed, and be arranged to Grazing condition is placed directly in chest, belly, wrist, Bones and joints or tough
Band junction, heart sound, lungs sound, breath sound, peristaltic sound, pulse tone, bone sound, joint sound are extracted by the sound transducer.
3. wearable sticker as claimed in claim 1, it is characterised in that the analog sensor interface is with FPC connector
Mode and the sound transducer wired connection.
4. wearable sticker as claimed in claim 1, it is characterised in that the sound transducer is encapsulated as lamelliform complete soft
Structure.
5. wearable sticker as claimed in claim 1, it is characterised in that the sound transducer senses for PVDF piezoelectric membranes
Device.
6. wearable sticker as claimed in claim 1, it is characterised in that it is thin that the sound transducer includes two PVDF piezoelectricity
Film, is respectively placed in heart with wrist to detect heart sound and arteries and veins message number.
7. the wearable sticker as described in any one of claim 1 to 6, it is characterised in that the analog filter block include according to
Difference channel, 4 ranks-Butterworth LPF and the main amplifying circuit of secondary connection, the difference channel suppression common mode signal
And amplify useful signal, 4 ranks-Butterworth LPF eliminates high band noise；The main amplifying circuit is by signal
Adjust to what A/D sampled and adopt scope.
8. wearable sticker as claimed in claim 7, it is characterised in that the multiplication factor of the difference channel is 30 times, institute
The cut-off frequency for stating 4 ranks-Butterworth LPF is 500Hz.
9. the wearable sticker as described in any one of claim 1 to 8, it is characterised in that the microcontroller circuit controls mould
Block includes ADC and DSP module, and the ADC carries out A/D to the signal after the analog filter block filtering process and adopted
Sample, the DSP module control ADC sampling, and digital processing is carried out to the signal after ADC processing.
10. wearable sticker as claimed in claim 9, it is characterised in that for heart sound in collection, the DSP module includes
Free transmission range is 30Hz~150Hz 4 ranks-Butterworth bandpass filter；For collection arteries and veins sound, the DSP module includes logical
With 4 ranks-Butterworth bandpass filter that scope is free transmission range 30Hz~90Hz.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710582219.0A CN107233108A (en) | 2017-07-17 | 2017-07-17 | A kind of wearable sticker of acquisition volume message number |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710582219.0A CN107233108A (en) | 2017-07-17 | 2017-07-17 | A kind of wearable sticker of acquisition volume message number |
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| CN201710582219.0A Pending CN107233108A (en) | 2017-07-17 | 2017-07-17 | A kind of wearable sticker of acquisition volume message number |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108514428A (en) * | 2018-04-12 | 2018-09-11 | 清华大学 | Gurgling sound harvester |
| CN108742691A (en) * | 2018-04-11 | 2018-11-06 | 清华大学 | Flexible heart sound monitoring device |
| CN109084889A (en) * | 2018-08-30 | 2018-12-25 | 华南农业大学 | A kind of vibration signal detection method |
| CN109448852A (en) * | 2018-11-29 | 2019-03-08 | 平安科技（深圳）有限公司 | Health control method, device and computer equipment based on prediction model |
| CN109646042A (en) * | 2019-01-29 | 2019-04-19 | 电子科技大学 | A kind of wearable heart sound and lungs sound monitoring device based on piezoelectric transducer |
| CN110772279A (en) * | 2019-11-28 | 2020-02-11 | 北方民族大学 | Lung sound signal acquisition device and analysis method |
| CN111388003A (en) * | 2020-03-25 | 2020-07-10 | 清华大学 | Flexible electronic auscultation device, body sound determination device and auscultation system |
| CN111449637A (en) * | 2020-04-07 | 2020-07-28 | 上海市第十人民医院 | A system and method for evaluating arteriovenous fistula blood vessels |
| CN111811586A (en) * | 2020-08-12 | 2020-10-23 | 华准科技(绍兴)有限公司 | Diaper Wearable Sensor |
| CN112641460A (en) * | 2020-12-15 | 2021-04-13 | 浙江大学 | Physiological sound detection device and method based on micro-electromechanical piezoelectric acoustic sensor |
| CN114376541A (en) * | 2021-12-31 | 2022-04-22 | 杭州电子科技大学 | Device and method for monitoring human vital signs |
| CN117159017A (en) * | 2023-01-10 | 2023-12-05 | 北京大学口腔医学院 | Osteoarthritis monitoring system based on joint sound |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108742691A (en) * | 2018-04-11 | 2018-11-06 | 清华大学 | Flexible heart sound monitoring device |
| CN108514428A (en) * | 2018-04-12 | 2018-09-11 | 清华大学 | Gurgling sound harvester |
| CN109084889A (en) * | 2018-08-30 | 2018-12-25 | 华南农业大学 | A kind of vibration signal detection method |
| CN109448852A (en) * | 2018-11-29 | 2019-03-08 | 平安科技（深圳）有限公司 | Health control method, device and computer equipment based on prediction model |
| CN109646042A (en) * | 2019-01-29 | 2019-04-19 | 电子科技大学 | A kind of wearable heart sound and lungs sound monitoring device based on piezoelectric transducer |
| CN110772279A (en) * | 2019-11-28 | 2020-02-11 | 北方民族大学 | Lung sound signal acquisition device and analysis method |
| CN111388003A (en) * | 2020-03-25 | 2020-07-10 | 清华大学 | Flexible electronic auscultation device, body sound determination device and auscultation system |
| CN111388003B (en) * | 2020-03-25 | 2021-01-29 | 清华大学 | Flexible electronic auscultation device, body sound determination device and auscultation system |
| CN111449637A (en) * | 2020-04-07 | 2020-07-28 | 上海市第十人民医院 | A system and method for evaluating arteriovenous fistula blood vessels |
| CN111449637B (en) * | 2020-04-07 | 2023-08-18 | 江西济民可信集团有限公司 | Evaluation system and method for arteriovenous internal fistula blood vessel |
| CN111811586A (en) * | 2020-08-12 | 2020-10-23 | 华准科技(绍兴)有限公司 | Diaper Wearable Sensor |
| CN112641460A (en) * | 2020-12-15 | 2021-04-13 | 浙江大学 | Physiological sound detection device and method based on micro-electromechanical piezoelectric acoustic sensor |
| CN114376541A (en) * | 2021-12-31 | 2022-04-22 | 杭州电子科技大学 | Device and method for monitoring human vital signs |
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