CN102512141B - Vital sign monitor - Google Patents
Vital sign monitor Download PDFInfo
- Publication number
- CN102512141B CN102512141B CN201110403737.4A CN201110403737A CN102512141B CN 102512141 B CN102512141 B CN 102512141B CN 201110403737 A CN201110403737 A CN 201110403737A CN 102512141 B CN102512141 B CN 102512141B
- Authority
- CN
- China
- Prior art keywords
- signal
- module
- vital sign
- frequency mixer
- ripple
- 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.)
- Active
Links
Images
Landscapes
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The invention relates to a vital signs monitor which comprises a signal receiving and transmitting module, a data collecting card, a processing module and an alarming module. The signal receiving and transmitting module is used for generating continuous waves and radiating outwards as well as receiving target echoes and processing; the data collecting card is connected with the signal receiving and transmitting module and used for converting the analog signal acquired from the signal receiving and transmitting module into the digital signal; the processing module is connected with the data collecting card and used for processing the digital signal and transmitting a control command; and the alarming module is connected with the processing module and used for receiving the control command transmitted by the processing module. The vital signs monitor can be used without contacting the human body and causing discomfort to the human body, has a simple structure and low cost investment, is convenient and safe to use, adopts the manure technology and is suitable for market promotion and application.
Description
[technical field]
The present invention relates to life information monitoring field, particularly relate to a kind of family health care vital sign monitor.
[background technology]
Traditional method that life-information is monitored is mainly pressure application and warming method, adopts contact monitoring equipment, is applied on hospital clinical more.During monitoring, the sensor of equipment need to be contacted with human body skin, can make patient do not feel like oneself and bring very large inconvenience to patient's action, and patient monitors in hospital, can cause huge mental pressure and economic pressures to patient.
In recent years, the research focus of contactless monitoring equipment is super bandwidth radar, but use, super bandwidth Radar Technology is immature, hardware cost is high, is unfavorable for marketing and use.
[summary of the invention]
Based on this, be necessary to provide a kind of convenient monitoring, cost to drop into low family health care vital sign monitor.
A vital sign monitor, comprises
Signal transmitting and receiving module, for generating Electromagnetic Continuous ripple and to external radiation, receiving target echo is also processed and obtained the analogue signal that comprises vital sign information;
Data collecting card, is connected with described signal transmitting and receiving module, for converting the analogue signal of obtaining from signal transmitting and receiving module to digital signal;
Processing module, is connected with described data collecting card, for control instruction is processed and sent to described digital signal;
Alarm module, is connected with described processing module, for the control instruction of receiving processing module and send alarm signal.
In a preferred embodiment, described signal transmitting and receiving module comprises agitator, transmitting antenna, reception antenna and frequency mixer, described agitator is used for generating Electromagnetic Continuous ripple, described in a part of ripple signal feed-in of described Electromagnetic Continuous ripple, transmitting antenna, to external radiation, arrives at the collection that human body carries out vital sign information; Another part ripple signal enters described frequency mixer as the local frequency amount of described frequency mixer; The target echo that described reception antenna reception comprises vital sign parameter signals the signal frequency amount using described target echo as described frequency mixer are inputted described frequency mixer.
In a preferred embodiment, described signal transmitting and receiving module also comprises intermediate frequency amplifier, and described intermediate frequency amplifier is connected with described frequency mixer, for the output signal to described frequency mixer, amplifies.
In a preferred embodiment, described Electromagnetic Continuous ripple is single-frequency continuous sine wave.
In a preferred embodiment, described frequency mixer comprises the first frequency mixer and the second frequency mixer, described intermediate frequency amplifier comprises the first intermediate frequency amplifier and the second intermediate frequency amplifier, described the first frequency mixer is connected with described the first intermediate frequency amplifier, and described the second frequency mixer is connected with described the second intermediate frequency amplifier; Described another part ripple signal is divided into two-way, and a road ripple signal enters described the first frequency mixer, and another road ripple signal enters described the second frequency mixer through 90 degree phase shifts.
In a preferred embodiment, described processing module comprises filter unit and central processing unit, described filter unit comprises high pass filter and low pass filter, and described high pass filter adopts quadravalence IIR filter, and described low-pass filtering adopts seven rank IIR filters; The digital signal of described data collecting card output is sent into described central processing unit after described filtering unit filters.
In a preferred embodiment, described processing module also comprises read only memory and random access memory, described read only memory is used for storing breath signal Wave crest and wave trough calculation procedure, instantaneous breathing rate calculation procedure, breath signal Wave crest and wave trough threshold values and instantaneous breathing rate threshold values, described random access memory controls for storing the application program that alarm module is reported to the police, signal after described filtering unit filters enters described central processing unit, the program that central processing unit calls in described read only memory and described random access memory is successively processed signal and sends control instruction according to result, to control described alarm module, send warning.
In a preferred embodiment, also comprise human-computer interface module, described human-computer interface module is connected with described processing module, described human-computer interface module comprises breath signal curve display unit, instantaneous breathing rate curve display unit and alarm signal display unit, described breath signal curve display unit is for drawing breath signal curve according to the signal after described processing module is processed, described instantaneous breathing rate curve display unit is for drawing instantaneous breathing rate curve according to the signal after described processing module is processed, described alarm signal display unit is for showing the state of described alarm module.
In a preferred embodiment, described human-computer interface module also comprises threshold value setting unit, and described threshold value setting unit is used for setting breath signal Wave crest and wave trough threshold values and instantaneous breathing rate threshold values.
In a preferred embodiment, described signal transmitting and receiving module is obtained vital sign information by the phase difference between the Electromagnetic Continuous ripple of sending and receiving, and a part of Electromagnetic Continuous ripple generating is processed, form the carrier signal of quadrature, the carrier signal of described quadrature is for carrying out quadrature demodulation to described target echo.
Above-mentioned vital sign monitor, to external radiation Electromagnetic Continuous ripple, receives the collection that the target echo comprise vital sign information completes the vital sign information such as, heart impact signal moving to human body respiration, body by signal transmitting and receiving module.During monitoring, monitoring equipment, without contact human body, can not cause discomfort, has realized the non-invasive monitoring to vital sign information.And adopt Electromagnetic Continuous ripple as the medium that gathers vital sign information, treatment technology comparative maturity, simple in structure, cost drops into low, easy to use, safe, is conducive to popularization and the use in market.
[accompanying drawing explanation]
Fig. 1 is the module map of the vital sign monitor of preferred embodiment of the present invention;
Fig. 2 is the schematic diagram of signal transmitting and receiving module in Fig. 1;
Fig. 3 is the detailed block diagram of processing module in Fig. 1;
Fig. 4 is the module map of the vital sign monitor of one embodiment of the invention;
Fig. 5 is the detailed block diagram of human-computer interface module in Fig. 4.
[specific embodiment]
In order to solve contact monitoring equipment, use the problem that contactless monitoring equipment technology is immature, hardware cost is high inconvenient and the super bandwidth Radar Technology of application, proposed a kind of family health care vital sign monitor.
As shown in Figure 1, the vital sign monitor of preferred embodiment of the present invention, comprises signal transmitting and receiving module 110, data collecting card 120, processing module 130 and alarm module 140.Signal transmitting and receiving module 110 is for generating Electromagnetic Continuous ripple and to external radiation, receiving target echo is also processed and obtained the analogue signal that comprises vital sign information.Data collecting card 120 is connected with signal transmitting and receiving module 110, for converting the analogue signal of obtaining from signal transmitting and receiving module to digital signal.Processing module 130 is connected with data collecting card 120, for digital signal being processed and sent control instruction.Alarm module 140 is connected with processing module 130, for the control instruction of receiving processing module and send alarm signal.
Above-mentioned vital sign monitor, to external radiation Electromagnetic Continuous ripple, receives the collection that the target echo comprise vital sign information completes the vital sign information such as, heart impact signal moving to human body respiration, body by signal transmitting and receiving module 110.During monitoring, monitoring equipment, without contact human body, can not cause discomfort, has realized the non-invasive monitoring to vital sign information.And adopt Electromagnetic Continuous ripple as the medium that gathers vital sign information, treatment technology comparative maturity, simple in structure, cost drops into low, easy to use, safe, is conducive to popularization and the use in market.
As shown in Figure 2, in the present embodiment, signal transmitting and receiving module 110 comprises agitator 111, transmitting antenna 112, reception antenna 113 and frequency mixer 114.Agitator 111 is for generating Electromagnetic Continuous ripple.A part of ripple signal feed-in transmitting antenna 112 of the Electromagnetic Continuous ripple generating, to external radiation, arrives at human body 210 and carries out the collection of vital sign parameter signals.Another part ripple signal enters frequency mixer 114 as the local frequency amount of frequency mixer 114.Reception antenna 113 receives and is loaded with the target echo of vital sign parameter signals the signal frequency amount input mixer 114 using this target echo as frequency mixer 114.
In the present embodiment, signal transmitting and receiving module 110 also comprises intermediate frequency amplifier 115, and intermediate frequency amplifier 115 is connected with frequency mixer 114, for the output signal of frequency mixer 114 is amplified.
In the present embodiment, the Electromagnetic Continuous ripple that agitator 111 generates is single-frequency continuous sine wave.
In the present embodiment, frequency mixer 114 comprises the first frequency mixer 114a and the second frequency mixer 114b, and intermediate frequency amplifier 115 comprises the first intermediate frequency amplifier 115a and the second intermediate frequency amplifier 115b.The first frequency mixer 114a is connected with the first intermediate frequency amplifier 115a, and the second frequency mixer 114b is connected with described the second intermediate frequency amplifier 115b.Another part ripple signal in the Electromagnetic Continuous ripple that agitator 111 generates is divided into two-way, and a road ripple signal enters the first frequency mixer 114a, and another road ripple signal enters the second frequency mixer 114b through 90 degree phase shifts.
Above-mentioned vital sign monitor, agitator 111 sends the single-frequency continuous sine wave of 24GHz, part ripple signal feed-in transmitting antenna 112 is to external radiation, another part ripple signal is divided into two-way, one road ripple signal enters the first frequency mixer 114a and the target echo mixing that is loaded with the vital sign information of human body 210, another road ripple signal enters the second frequency mixer 114b through 90 degree phase shifts, with the target echo mixing that is loaded with the vital sign information of human body 210.Through the intermediate-freuqncy signal of the first frequency mixer 114a and the second frequency mixer 114b output two-way quadrature, then input signal capture card 120 after the first intermediate frequency amplifier 115a and the second intermediate frequency amplifier 115b respectively.This device adopts NI USB-6210 data collecting card, and the effect of data collecting card 120 is to convert the analogue signal of obtaining to digital signal, and sends into processing module 130.
As shown in Figure 3, in the present embodiment, processing module 130 comprises filter unit 132 and central processing unit 134.Filter unit 132 comprises high pass filter and low pass filter, and high pass filter adopts quadravalence IIR filter, and low-pass filtering adopts seven rank IIR filters.The digital signal of data collecting card 120 outputs is sent into central processing unit 134 after filter unit 132 filtering.
The breath signal of take below in vital sign information describes as example.
By measured data, found, the digital signal baseline drift of data collecting card 120 outputs is serious, and contains flip-flop, and waveform is subject to noise jamming serious.In order to extract regular breath signal, need to carry out Filtering Processing to the digital signal of data collecting card 120 outputs.Adopt the IIR filter of exponent number quadravalence to carry out high-pass filtering, remove baseline drift and flip-flop.Adopt the IIR filter on exponent number seven rank to carry out low-pass filtering, remove noise and other interference.The breathing rate of human normal is 10-30 beat/min, and respective frequencies is 0.16Hz-0.5Hz.Therefore the cut-off frequency of high-pass filtering is made as 0.16Hz, and the cut-off frequency of low-pass filtering is made as 0.5Hz, like this through twice filtering, has removed baseline drift, DC component and noise.
By Filtering Processing, finally obtain the comparatively breath signal of rule, its waveform is similar to sinusoidal signal.In order to obtain breathing rate, we adopt following methods:
First detect crest or the trough of breath signal waveform, then obtain instantaneous breathing rate according to the interval between two crests (trough):
Instantaneous breathing rate=[1/ peak separation] * 60
Also can, within the time of 60 seconds, by the number of statistics crest (trough), obtain average respiration.As: within the time of 60 seconds, have 20 crests, average respiration is 20 beats/min.
In the present embodiment, processing module 130 also comprises read only memory 136 and random access memory 138.Read only memory 136 is for storing breath signal Wave crest and wave trough calculation procedure, instantaneous breathing rate calculation procedure, breath signal Wave crest and wave trough threshold values and instantaneous breathing rate threshold values.Random access memory 138 controls for storing the application program that alarm module is reported to the police.The filtered signal of filter unit 132 enters central processing unit 134, the program that central processing unit 134 calls in read only memory 136 and random access memory 138 is successively processed signal and sends control instruction according to result, to control alarm module 140, sends warning.
In the present embodiment, signal transmitting and receiving module 110 adopts Doppler radar principle.Signal transmitting and receiving module 110 is obtained vital sign information by the phase difference between the Electromagnetic Continuous ripple of sending and receiving, and a part of Electromagnetic Continuous ripple generating is processed, form the carrier signal of quadrature, the carrier signal of this quadrature is for carrying out quadrature demodulation to target echo.
As shown in Figure 4 and Figure 5, in the vital sign monitor of an embodiment, also comprise human-computer interface module 450, human-computer interface module 450 is connected with processing module 130.Human-computer interface module 450 comprises breath signal curve display unit 452, instantaneous breathing rate curve display unit 454 and alarm signal display unit 456.Breath signal curve display unit 452 is for drawing breath signal curve according to the signal after described processing module is processed.Instantaneous breathing rate curve is drawn for the signal after processing according to treated module 130 in instantaneous breathing rate curve display unit 454.Alarm signal display unit 456 is for the state of display alarm module 140.
In the present embodiment, human-computer interface module 450 also comprises threshold value setting unit 458, and threshold value setting unit 458 is for setting breath signal Wave crest and wave trough threshold values and instantaneous breathing rate threshold values.
In above-described embodiment, alarm module 140 comprises audio chip.Central processing unit 134 can be controlled audio chip, if the crest of the breath signal obtaining, trough and instantaneous breathing rate surpass the threshold value of setting in advance, central processing unit 134 will be controlled audio chip and drive alarm module 140 to send chimes of doom, simultaneously the alarm signal display unit 456 display alarm states of human-computer interface module 450.Signal will obtain 2 arrays after central processing unit 134 is processed, and array 1 can be for drawing breath signal curve, and array 2 can be for drawing instantaneous breathing rate curve.The serial ports 1 of processing module 130 is sent into the data in array 1 the breath signal curve display unit 452 of human-computer interface module 450, and serial ports 2 is sent into the data in array 2 the instantaneous breathing rate curve display unit 454 of human-computer interface module 450.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (7)
1. a vital sign monitor, comprises
Signal transmitting and receiving module, for generating Electromagnetic Continuous ripple and to external radiation, receiving target echo is also processed and is obtained the analogue signal that comprises vital sign information;
Data collecting card, is connected with described signal transmitting and receiving module, for converting the described analogue signal of obtaining from signal transmitting and receiving module to digital signal;
Processing module, is connected with described data collecting card, for control instruction is processed and sent to described digital signal;
Alarm module, is connected with described processing module, for the control instruction of receiving processing module and send alarm signal;
Described signal transmitting and receiving module comprises agitator, transmitting antenna, reception antenna and frequency mixer, described agitator is used for generating Electromagnetic Continuous ripple, described in a part of ripple signal feed-in of described Electromagnetic Continuous ripple, transmitting antenna, to external radiation, arrives at the collection that human body carries out vital sign information; Another part ripple signal enters described frequency mixer as the local frequency amount of described frequency mixer; The target echo that described reception antenna reception comprises vital sign information the signal frequency amount using described target echo as described frequency mixer are inputted described frequency mixer; It is characterized in that,
Described signal transmitting and receiving module also comprises intermediate frequency amplifier, and described intermediate frequency amplifier is connected with described frequency mixer, for the output signal to described frequency mixer, amplifies;
Described Electromagnetic Continuous ripple is single-frequency continuous sine wave;
Described agitator sends the single-frequency continuous sine wave of 24GHz.
2. vital sign monitor according to claim 1, it is characterized in that, described frequency mixer comprises the first frequency mixer and the second frequency mixer, described intermediate frequency amplifier comprises the first intermediate frequency amplifier and the second intermediate frequency amplifier, described the first frequency mixer is connected with described the first intermediate frequency amplifier, and described the second frequency mixer is connected with described the second intermediate frequency amplifier; Described another part ripple signal is divided into two-way, and a road ripple signal enters described the first frequency mixer, and another road ripple signal enters described the second frequency mixer through 90 degree phase shifts.
3. vital sign monitor according to claim 1, it is characterized in that, described processing module comprises filter unit and central processing unit, described filter unit comprises high pass filter and low pass filter, described high pass filter adopts quadravalence IIR filter, and described low-pass filtering adopts seven rank IIR filters; The digital signal of described data collecting card output is sent into described central processing unit after described filtering unit filters.
4. vital sign monitor according to claim 3, it is characterized in that, described processing module also comprises read only memory and random access memory, described read only memory is used for storing breath signal Wave crest and wave trough calculation procedure, instantaneous breathing rate calculation procedure, breath signal Wave crest and wave trough threshold values and instantaneous breathing rate threshold values, described random access memory controls for storing the application program that alarm module is reported to the police, signal after described filtering unit filters enters described central processing unit, the program that central processing unit calls in described read only memory and described random access memory is successively processed signal and sends control instruction according to result, to control described alarm module, send warning.
5. vital sign monitor according to claim 1, it is characterized in that, also comprise human-computer interface module, described human-computer interface module is connected with described processing module, described human-computer interface module comprises breath signal curve display unit, instantaneous breathing rate curve display unit and alarm signal display unit, described breath signal curve display unit is for drawing breath signal curve according to the signal after described processing module is processed, described instantaneous breathing rate curve display unit is for drawing instantaneous breathing rate curve according to the signal after described processing module is processed, described alarm signal display unit is for showing the state of described alarm module.
6. vital sign monitor according to claim 5, is characterized in that, described human-computer interface module also comprises threshold value setting unit, and described threshold value setting unit is used for setting breath signal Wave crest and wave trough threshold values and instantaneous breathing rate threshold values.
7. according to the vital sign monitor described in any one in claim 1 to 6, it is characterized in that, described signal transmitting and receiving module is obtained vital sign information by the phase difference between the Electromagnetic Continuous ripple of sending and receiving, and a part of Electromagnetic Continuous ripple generating is processed, form the carrier signal of quadrature, the carrier signal of described quadrature is for carrying out quadrature demodulation to described target echo.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110403737.4A CN102512141B (en) | 2011-12-07 | 2011-12-07 | Vital sign monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110403737.4A CN102512141B (en) | 2011-12-07 | 2011-12-07 | Vital sign monitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102512141A CN102512141A (en) | 2012-06-27 |
| CN102512141B true CN102512141B (en) | 2014-04-16 |
Family
ID=46283442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110403737.4A Active CN102512141B (en) | 2011-12-07 | 2011-12-07 | Vital sign monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102512141B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016072940A1 (en) * | 2014-11-05 | 2016-05-12 | Agency For Science, Technology And Research | Multi-channel ballistocardiography with cepstrum smoothing and quality-based dynamic channel selection |
| CN106644030B (en) * | 2016-08-31 | 2020-05-22 | 上海交通大学 | Non-contact vibration measurement method based on Doppler radar |
| CN110115583A (en) * | 2018-02-07 | 2019-08-13 | 普天信息技术有限公司 | The method and apparatus of monitoring of respiration |
| CN108261193A (en) * | 2018-03-19 | 2018-07-10 | 吉林大学 | A kind of continuous blood pressure measurer and measuring method based on heart impact signal |
| CN111685741B (en) * | 2020-06-11 | 2021-06-08 | 中山大学 | Method for detecting human body respiration rate and heart rate based on orthogonal demodulation pulse ultra-wideband radar |
| CN113616039A (en) * | 2021-07-28 | 2021-11-09 | 珠海格力电器股份有限公司 | Method and device for adjusting seat device, equipment and computer readable storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1700879A (en) * | 2002-11-26 | 2005-11-23 | 金伯利-克拉克环球有限公司 | Healthcare monitoring system |
| CN101049239A (en) * | 2007-05-10 | 2007-10-10 | 浙江大学 | Non - contact type method and system for biologic feature recognition based on radio frequency recognition |
| CN101430817A (en) * | 2007-11-08 | 2009-05-13 | 深圳迈瑞生物医疗电子股份有限公司 | Alarm triggering method and device according to human body rhythmic physiological parameter |
| CN101843489A (en) * | 2009-03-26 | 2010-09-29 | 深圳市理邦精密仪器有限公司 | Respiration signal processing method |
| CN102046076A (en) * | 2008-04-03 | 2011-05-04 | Kai医药公司 | Non-contact physiologic motion sensors and methods for use |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7811234B2 (en) * | 2002-08-01 | 2010-10-12 | California Institute Of Technology | Remote-sensing method and device |
-
2011
- 2011-12-07 CN CN201110403737.4A patent/CN102512141B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1700879A (en) * | 2002-11-26 | 2005-11-23 | 金伯利-克拉克环球有限公司 | Healthcare monitoring system |
| CN101049239A (en) * | 2007-05-10 | 2007-10-10 | 浙江大学 | Non - contact type method and system for biologic feature recognition based on radio frequency recognition |
| CN101430817A (en) * | 2007-11-08 | 2009-05-13 | 深圳迈瑞生物医疗电子股份有限公司 | Alarm triggering method and device according to human body rhythmic physiological parameter |
| CN102046076A (en) * | 2008-04-03 | 2011-05-04 | Kai医药公司 | Non-contact physiologic motion sensors and methods for use |
| CN101843489A (en) * | 2009-03-26 | 2010-09-29 | 深圳市理邦精密仪器有限公司 | Respiration signal processing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102512141A (en) | 2012-06-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102512141B (en) | Vital sign monitor | |
| CN105232026A (en) | Heartbeat frequency detection algorithm of non-contact vital sign detection system | |
| CN102626307A (en) | Dynamic pulse signal real-time detection system and detection method | |
| CN104188683A (en) | Multifunctional intelligent stethoscope capable of displaying, storing and transmitting electrocardiograph signals | |
| CN103371814A (en) | Remote wireless electrocardiograph monitoring system and feature extraction method on basis of intelligent diagnosis | |
| CN203208020U (en) | Electrocardiogram monitoring system | |
| CN104799849A (en) | Portable sleep apnea syndrome monitoring method and device | |
| CN204909917U (en) | Intelligent sheet of sleep guardianship and medical diagnosis based on cloth sensor | |
| CN205433676U (en) | Portable many physiological parameters of human body detector based on raspberry group | |
| CN204181639U (en) | A kind of Multifunctional smart stethoscope showing, store and transmit electrocardiosignal | |
| CN203138473U (en) | Remote electrocardiograph monitoring system based on global system for mobile communication (GSM) | |
| Chourasia et al. | Wireless data acquisition system for fetal phonocardiographic signals using BluetoothTM | |
| CN102274008A (en) | Respiratory and heartbeat counting and early warning circuit based on piezoelectric cable sensor | |
| CN103646164A (en) | Portable comprehensive human health detecting system and method thereof | |
| CN206403762U (en) | A kind of senior health and fitness's monitoring and notice system | |
| CN202005747U (en) | Vital sign monitoring device for diver in underwater operation | |
| CN205359467U (en) | Intelligence electrocardio monitoring devices | |
| CN213787376U (en) | Miniature wearable Doppler radar heartbeat detector | |
| Thakor et al. | Wearable ECG recording and monitoring system based on MSP430 microcontroller | |
| CN204394493U (en) | A kind of intelligent sphygmomanometer | |
| CN104510451A (en) | Non-load monitoring system | |
| CN202875327U (en) | Device for monitoring hydrocephalus and encephaledema | |
| CN207168486U (en) | A kind of monitoring of pulse system | |
| CN207520123U (en) | Cardiovascular health is guarded and early warning system | |
| Ren et al. | UWB baby and sleep apnea monitor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221107 Address after: 310018 Room 501, Building 9, No. 20, Kejiyuan Road, Baiyang Street, Hangzhou Economic and Technological Development Zone, Zhejiang Province Patentee after: Hangzhou Zhongke advanced technology development Co.,Ltd. Address before: 1068 No. 518055 Guangdong city in Shenzhen Province, Nanshan District City Xili University School Avenue Patentee before: SHENZHEN INSTITUTES OF ADVANCED TECHNOLOGY CHINESE ACADEMY OF SCIENCES |