CN102512141A - Vital sign monitor - Google Patents
Vital sign monitor Download PDFInfo
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- CN102512141A CN102512141A CN2011104037374A CN201110403737A CN102512141A CN 102512141 A CN102512141 A CN 102512141A CN 2011104037374 A CN2011104037374 A CN 2011104037374A CN 201110403737 A CN201110403737 A CN 201110403737A CN 102512141 A CN102512141 A CN 102512141A
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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 the life information monitoring field, particularly relate to a kind of family health care and use vital sign monitor.
[background technology]
Traditional method that life-information is monitored mainly is pressure application and thalposis method, adopts the contact monitoring equipment, is applied on the hospital clinical more.During monitoring, need the pick off of equipment be contacted with human body skin, patient is done not feel like oneself and bring very big inconvenience for 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 ultra bandwidth radar, and ultra bandwidth Radar Technology is immature, hardware cost is high but be to use, and 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 and use vital sign monitor.
A kind of vital sign monitor comprises
The signal transmitting and receiving module is used to generate the continuous electric magnetic wave and to external radiation, the receiving target echo is also handled and obtained the analogue signal that comprises vital sign information;
Data collecting card links to each other with said signal transmitting and receiving module, is used for the analog signal conversion of obtaining from the signal transmitting and receiving module is become digital signal;
Processing module links to each other with said data collecting card, is used for control instruction is handled and sent to said digital signal;
Alarm module links to each other with said processing module, is used for the control instruction of receiving processing module and sends alarm signal.
In a preferred embodiment; Said signal transmitting and receiving module comprises agitator, transmitting antenna, reception antenna and frequency mixer; Said agitator is used to generate the continuous electric magnetic wave; The said transmitting antenna of a part of ripple signal feed-in of said continuous electric magnetic wave arrives at the collection that human body carries out vital sign information to external radiation; Another part ripple signal gets into said frequency mixer as the local frequency amount of said frequency mixer; Said reception antenna receives and comprises the target echo of vital sign parameter signals and said target echo is imported said frequency mixer as the signal frequency amount of said frequency mixer.
In a preferred embodiment, said signal transmitting and receiving module also comprises intermediate frequency amplifier, and said intermediate frequency amplifier links to each other with said frequency mixer, is used for the output signal of said frequency mixer is amplified.
In a preferred embodiment, said continuous electric magnetic wave is that single-frequency is sinusoidal wave continuously.
In a preferred embodiment; Said frequency mixer comprises first frequency mixer and second frequency mixer; Said intermediate frequency amplifier comprises first intermediate frequency amplifier and second intermediate frequency amplifier; Said first frequency mixer links to each other with said first intermediate frequency amplifier, and said second frequency mixer links to each other with said second intermediate frequency amplifier; Said another part ripple signal is divided into two-way, and one road ripple signal gets into said first frequency mixer, and another road ripple signal gets into said second frequency mixer through 90 degree phase shifts.
In a preferred embodiment; Said processing module comprises filter unit and central processing unit; Said filter unit comprises high pass filter and low pass filter, and said high pass filter adopts the quadravalence IIR filter, and said LPF adopts seven rank IIR filters; The digital signal of said data collecting card output is sent into said central processing unit after said filtering unit filters.
In a preferred embodiment; Said processing module also comprises read only memory and random access memory; Said read only memory is used to store 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; Said random access memory is used to store the application program that the control alarm module is reported to the police; Signal after the said filtering unit filters gets into said central processing unit, and central processing unit calls program in said read only memory and the said random access memory successively and signal is handled and sent control instruction according to result, sends warning to control said alarm module.
In a preferred embodiment; Also comprise human-computer interface module; Said human-computer interface module links to each other with said processing module; Said human-computer interface module comprises breath signal curve display unit, instantaneous breathing rate curve display unit and alarm signal display unit; Said breath signal curve display unit is used for drawing the breath signal curve according to the signal after handling through said processing module, and said instantaneous breathing rate curve display unit is used for drawing instantaneous breathing rate curve according to the signal after handling through said processing module, and said alarm signal display unit is used to show the state of said alarm module.
In a preferred embodiment, said human-computer interface module also comprises the threshold value setting unit, and said threshold value setting unit is used to set breath signal Wave crest and wave trough threshold values and instantaneous breathing rate threshold values.
In a preferred embodiment; Said signal transmitting and receiving module is obtained vital sign information through the phase difference between the continuous electric magnetic wave that sends and receive; And a part of continuous electric magnetic wave that generates handled; Form orthogonal carrier signal, said orthogonal carrier signal is used for said target echo is carried out quadrature demodulation.
Above-mentioned vital sign monitor to external radiation Electromagnetic Continuous ripple, receives the collection that the target echo comprise vital sign information is accomplished vital sign information such as, heart impact signal moving to human body respiration, body through the signal transmitting and receiving module.During monitoring, monitoring equipment need not to contact human body, can not cause discomfort, has realized the non-invasive monitoring to vital sign information.And adopt the continuous electric magnetic wave as the medium of gathering vital sign information, the treatment technology comparative maturity, simple in structure, cost drops into low, easy to use, safe, helps the popularization and the use in market.
[description of drawings]
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 among Fig. 1;
Fig. 3 is the detailed block diagram of processing module among 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 among Fig. 4.
[specific embodiment]
Use the problem that contactless monitoring equipment technology is immature, hardware cost is high inconvenient and that use ultra bandwidth Radar Technology in order to solve the contact monitoring equipment, proposed a kind of family health care and used 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 used to generate the continuous electric magnetic wave and to external radiation, the receiving target echo is also handled and obtained the analogue signal that comprises vital sign information.Data collecting card 120 links to each other with signal transmitting and receiving module 110, is used for the analog signal conversion of obtaining from the signal transmitting and receiving module is become digital signal.Processing module 130 links to each other with data collecting card 120, is used for control instruction is handled and sent to digital signal.Alarm module 140 links to each other with processing module 130, is used for the control instruction of receiving processing module and sends alarm signal.
Above-mentioned vital sign monitor to external radiation Electromagnetic Continuous ripple, receives the collection that the target echo comprise vital sign information is accomplished vital sign information such as, heart impact signal moving to human body respiration, body through signal transmitting and receiving module 110.During monitoring, monitoring equipment need not to contact human body, can not cause discomfort, has realized the non-invasive monitoring to vital sign information.And adopt the continuous electric magnetic wave as the medium of gathering vital sign information, the treatment technology comparative maturity, simple in structure, cost drops into low, easy to use, safe, helps the 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 used to generate the continuous electric magnetic wave.A part of ripple signal feed-in transmitting antenna 112 of the continuous electric magnetic wave that generates arrives at human body 210 and carries out the collection of vital sign parameter signals to external radiation.Another part ripple signal gets into frequency mixer 114 as the local frequency amount of frequency mixer 114.The target echo that reception antenna 113 receptions are loaded with vital sign parameter signals is also with the signal frequency amount input mixer 114 of 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 links to each other with frequency mixer 114, is used for the output signal of frequency mixer 114 is amplified.
In the present embodiment, the continuous electric magnetic wave of agitator 111 generations is that single-frequency is sinusoidal wave continuously.
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 links to each other with the first intermediate frequency amplifier 115a, and the second frequency mixer 114b links to each other with the said second intermediate frequency amplifier 115b.Another part ripple signal in the continuous electric magnetic wave that agitator 111 generates is divided into two-way, and one road ripple signal gets into the first frequency mixer 114a, and another road ripple signal gets into the second frequency mixer 114b through 90 degree phase shifts.
Above-mentioned vital sign monitor; The single-frequency that agitator 111 sends 24GHz is sinusoidal wave continuously; Part ripple signal feed-in transmitting antenna 112 is to external radiation, and another part ripple signal is divided into two-way, and one road ripple signal gets into 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 gets into the second frequency mixer 114b through 90 degree phase shifts, with the target echo mixing of the vital sign information that is loaded with human body 210.Through the orthogonal intermediate-freuqncy signal of the first frequency mixer 114a and second frequency mixer 114b output two-way, input signal capture card 120 behind the first intermediate frequency amplifier 115a and the second intermediate frequency amplifier 115b respectively again.This device adopts NI USB-6210 data collecting card, and the effect of data collecting card 120 is that the analog signal conversion of obtaining is become 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 the quadravalence IIR filter, and LPF 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.
Below be that example describes with the breath signal in the vital sign information.
Found that by measured data the digital signal baseline drift of data collecting card 120 outputs is serious, and contains flip-flop, waveform receives noise serious.In order to extract breath signal clocklike, need carry out Filtering Processing to the digital signal of data capture 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 LPF, remove noise and other interference.The normal breathing rate of human body is 10-30 time/minute, 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 LPF is made as 0.5Hz, like this through twice filtering, has removed baseline drift, DC component and noise.
Through 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 method:
Detect the crest or the trough of breath signal waveform earlier, obtain instantaneous breathing rate according to the interval between two crests (trough) again:
Instantaneous breathing rate=[1/ peak separation] * 60
Also can in 60 seconds time, obtain average respiration through the number of statistics crest (trough).As: in 60 seconds time, 20 crests are arranged, then average respiration is 20 times/minute.
In the present embodiment, processing module 130 also comprises read only memory 136 and random access memory 138.Read only memory 136 is used to store 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 is used to store the application program that the control alarm module is reported to the police.Filter unit 132 filtered signals get into central processing unit 134; Central processing unit 134 calls read only memory 136 successively and with the program in the random access memory 138 signal is handled and sent control instruction according to result, sends warning with control alarm module 140.
In the present embodiment, signal transmitting and receiving module 110 adopts the Doppler radar principle.Signal transmitting and receiving module 110 is obtained vital sign information through the phase difference between the continuous electric magnetic wave that sends and receive; And a part of continuous electric magnetic wave that generates handled; Form orthogonal carrier signal, this orthogonal carrier signal is used for target echo is carried out quadrature demodulation.
Like Fig. 4 and shown in Figure 5, in the vital sign monitor of an embodiment, also comprise human-computer interface module 450, human-computer interface module 450 links to each other 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 used for drawing the breath signal curve according to the signal after handling through said processing module.Instantaneous breathing rate curve display unit 454 is used for drawing instantaneous breathing rate curve according to the signal after treated module 130 processing.Alarm signal display unit 456 is used 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 used to set breath signal Wave crest and wave trough threshold values and instantaneous breathing rate threshold values.
In the foregoing description, alarm module 140 comprises audio chip.Central processing unit 134 can be controlled audio chip; If the crest of the breath signal that obtains, trough and instantaneous breathing rate surpass prior preset threshold; Central processing unit 134 will be controlled audio chip driving alarm module 140 and 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 handling through central processing unit 134, and array 1 can be used to draw the breath signal curve, and array 2 can be used to draw instantaneous breathing rate curve.The serial ports 1 of processing module 130 is sent the data in the array 1 into the breath signal curve display unit 452 of human-computer interface module 450, and serial ports 2 is sent into the data in the array 2 the instantaneous breathing rate curve display unit 454 of human-computer interface module 450.
The above embodiment has only expressed several kinds of embodiments of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the present invention's design, 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 accompanying claims.
Claims (10)
1. a vital sign monitor is characterized in that, comprises
The signal transmitting and receiving module is used to generate the continuous electric magnetic wave and to external radiation, the receiving target echo is also handled the analogue signal that obtains to comprise vital sign information;
Data collecting card links to each other with said signal transmitting and receiving module, is used for the said analog signal conversion of obtaining from the signal transmitting and receiving module is become digital signal;
Processing module links to each other with said data collecting card, is used for control instruction is handled and sent to said digital signal;
Alarm module links to each other with said processing module, is used for the control instruction of receiving processing module and sends alarm signal.
2. vital sign monitor according to claim 1; It is characterized in that; Said signal transmitting and receiving module comprises agitator, transmitting antenna, reception antenna and frequency mixer; Said agitator is used to generate the continuous electric magnetic wave, and the said transmitting antenna of a part of ripple signal feed-in of said continuous electric magnetic wave arrives at the collection that human body carries out vital sign information to external radiation; Another part ripple signal gets into said frequency mixer as the local frequency amount of said frequency mixer; Said reception antenna receives and comprises the target echo of vital sign information and said target echo is imported said frequency mixer as the signal frequency amount of said frequency mixer.
3. vital sign monitor according to claim 2 is characterized in that, said signal transmitting and receiving module also comprises intermediate frequency amplifier, and said intermediate frequency amplifier links to each other with said frequency mixer, is used for the output signal of said frequency mixer is amplified.
4. vital sign monitor according to claim 3 is characterized in that, said continuous electric magnetic wave is that single-frequency is sinusoidal wave continuously.
5. vital sign monitor according to claim 4; It is characterized in that; Said frequency mixer comprises first frequency mixer and second frequency mixer; Said intermediate frequency amplifier comprises first intermediate frequency amplifier and second intermediate frequency amplifier, and said first frequency mixer links to each other with said first intermediate frequency amplifier, and said second frequency mixer links to each other with said second intermediate frequency amplifier; Said another part ripple signal is divided into two-way, and one road ripple signal gets into said first frequency mixer, and another road ripple signal gets into said second frequency mixer through 90 degree phase shifts.
6. vital sign monitor according to claim 1; It is characterized in that; Said processing module comprises filter unit and central processing unit; Said filter unit comprises high pass filter and low pass filter, and said high pass filter adopts the quadravalence IIR filter, and said LPF adopts seven rank IIR filters; The digital signal of said data collecting card output is sent into said central processing unit after said filtering unit filters.
7. vital sign monitor according to claim 6; It is characterized in that; Said processing module also comprises read only memory and random access memory; Said read only memory is used to store 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; Said random access memory is used to store the application program that the control alarm module is reported to the police; Signal after the said filtering unit filters gets into said central processing unit, and central processing unit calls program in said read only memory and the said random access memory successively and signal is handled and sent control instruction according to result, sends warning to control said alarm module.
8. vital sign monitor according to claim 1; It is characterized in that; Also comprise human-computer interface module; Said human-computer interface module links to each other with said processing module, and said human-computer interface module comprises breath signal curve display unit, instantaneous breathing rate curve display unit and alarm signal display unit, and said breath signal curve display unit is used for drawing the breath signal curve according to the signal after handling through said processing module; Said instantaneous breathing rate curve display unit is used for drawing instantaneous breathing rate curve according to the signal after handling through said processing module, and said alarm signal display unit is used to show the state of said alarm module.
9. vital sign monitor according to claim 8 is characterized in that said human-computer interface module also comprises the threshold value setting unit, and said threshold value setting unit is used to set breath signal Wave crest and wave trough threshold values and instantaneous breathing rate threshold values.
10. according to any described vital sign monitor in the claim 1 to 9; It is characterized in that; Said signal transmitting and receiving module is obtained vital sign information through the phase difference between the continuous electric magnetic wave that sends and receive; And a part of continuous electric magnetic wave that generates handled, forming orthogonal carrier signal, said orthogonal carrier signal is used for said target echo is carried out quadrature demodulation.
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| 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 |
| 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 |
| CN111685741A (en) * | 2020-06-11 | 2020-09-22 | 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 |
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| CN102512141B (en) | 2014-04-16 |
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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 |