CN102178536A - Method and system for measuring oxygen saturation and heart rate - Google Patents
Method and system for measuring oxygen saturation and heart rate Download PDFInfo
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- CN102178536A CN102178536A CN2011100764721A CN201110076472A CN102178536A CN 102178536 A CN102178536 A CN 102178536A CN 2011100764721 A CN2011100764721 A CN 2011100764721A CN 201110076472 A CN201110076472 A CN 201110076472A CN 102178536 A CN102178536 A CN 102178536A
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- 238000005259 measurement Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 1
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Abstract
The invention discloses a method and a system for measuring oxygen saturation and heart rate, wherein the system comprises a pulse oximeter, a data sending device, a data receiving gateway, a data storage device and a data receiving device. Data can be forwarded to a data center of a server through Bluetooth, wired communication way or ZIGBEE short-distance wireless communication based on user selection. In order to solve the defects in the prior art, the invention provides a method and a system for measuring oxygen saturation and heart rate, wherein the system has high measurement efficiency, is convenient in use and can be operated remotely.
Description
Technical field
The present invention relates to the measuring method and the measuring system of a kind of blood oxygen saturation and heart rate.
Background technology
Under the prior art, measurement method of blood oxygen saturation and measuring system have following shortcoming:
1. traditional measurement method of blood oxygen saturation is to the human blood collection, utilizes blood gas analyzer to carry out electro chemical analysis again, measures partial pressure of oxygen, calculates blood oxygen saturation.This method not only bothers, and can not carry out successive monitoring.
2. common noinvasive pulse blood oxygen instrument costliness, complexity can only have the professional health care personnel operation.
3. commercially available portable pulse blood oxygen instrument ratio of precision is relatively poor, and is especially poor to motion artifact interference of noise screening ability.Can not realize the transmission of teledata, remote medical monitor, diagnosis etc.
Summary of the invention
In order to solve the problems of the prior art, but the purpose of this invention is to provide a kind of detection efficiency height, the blood oxygen saturation of using portable remote control and the measuring method and the measuring system of heart rate.
In order to achieve the above object, the invention provides the measuring method of a kind of blood oxygen saturation and heart rate, comprise the steps
(1) uses HONGGUANG and infrared light that human body is measured, measure the back result and obtain the photo-signal that two-way changes through opto-electronic conversion;
(2) filter direct current signal, extract AC signal;
(3) use the sliding window method to filter the noise of AC signal, filtered noise then is judged to be a trough when the minima position is in the window medium position, detect trough and continue to slip over several sampled points with rear hatch, but do not reexamine minima, guarantee that a last trough has left window center, continue inspection minima position and determine next trough, finally detect peak-to-peak value and pulse cycle;
(4) calculate blood oxygen saturation and heart rate according to the Beer-Lambert law;
(5) blood oxygen saturation and heart rate data are sent to data reception gateway by bluetooth module, cable data transmitting device, wireless data transmission device, data receive gateway data are sent to data storage device, and personnel transfer blood oxygen saturation and heart rate data in the data storage device by data sink.
Further improvement of the present invention is, also comprises the step of using amplifier that signal is amplified between described step (1) and step (2).
Further improvement of the present invention is, uses difference amplifier to filter direct current signal in the described step (2), extracts AC signal.
The present invention also provides the measuring system of a kind of blood oxygen saturation and heart rate, and it comprises
Pulse blood oxygen instrument comprises photoelectricity blood oxygen detecting probe, detects and obtains trap and the trap change curve of human body to HONGGUANG and infrared light, utilizes the Beer-Lambert law to calculate blood oxygen saturation and heart rate;
Data sending device is connected with described pulse blood oxygen instrument, and blood oxygen saturation and heart rate are sent to data reception gateway;
Data receive gateway, are connected with described data sending device, collect the data of described data sending device and forward the data to data storage device;
Data storage device receives gateway with described data and is connected, and blood oxygen saturation and heart rate that described pulse blood oxygen instrument is calculated carry out data storage;
Data sink is connected with described data storage device, and personnel transfer blood oxygen saturation and heart rate data in the data storage device by data sink.
Further improvement of the present invention is, described pulse blood oxygen instrument comprise H bridge drive circuit, the photoelectric current amplifying circuit that is connected with described H bridge drive circuit, the removing DC road that is connected with described photoelectric current amplifying circuit, the counting circuit that is connected with described removing DC road respectively, bluetooth module circuit, cable data transport module circuit, wireless data transfer module circuit.
Further improvement of the present invention is that described data sending device is one or more in bluetooth module, cable data transmitting device, the wireless data transmission device.
Further improvement of the present invention is that described wireless data transmission device is a ZIGBEE short-distance wireless communication device.
Further improvement of the present invention is that described data storage device is the computer server with data storage function.
Further improvement of the present invention is that described data sink comprises one or more in PC, mobile phone, the palm PC.
Further improvement of the present invention is that described pulse blood oxygen instrument is connected with the display that is used for showing in real time blood oxygen saturation and heart rate.
Owing to adopted technique scheme, the present invention to have following beneficial effect:
(1) non-invasive measurement of realization blood oxygen saturation and heart rate value, continuous monitoring.
(2) user can be transferred to server with Monitoring Data by the ZIGBEE communication in family, in the open air or outdoorly can forward the data to server database by the smart mobile phone that the Bluetooth communication utilization is equipped with client software.
(3) user or medical personnel can monitor the patient in real time by the WEB server of Telnet data center, diagnosis, and personal health archives etc. are set up in the physiological parameter information inquiry, realize the medical services of intelligent network.
Description of drawings
Accompanying drawing 1 is the structural representation of the embodiment of the measuring method of a kind of blood oxygen saturation of the present invention and heart rate and measuring system;
Accompanying drawing 2 is the structural representation of the embodiment of pulse blood oxygen instrument in the measuring method of a kind of blood oxygen saturation of the present invention and heart rate and the measuring system;
Accompanying drawing 3 is for using the sliding window method to determine the sketch map of trough among the measuring method of a kind of blood oxygen saturation of the present invention and heart rate and the measuring system embodiment.
The specific embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present invention is described in detail, thereby protection scope of the present invention is made more explicit defining so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that.
Referring to accompanying drawing 1 to accompanying drawing 3, a kind of blood oxygen saturation of present embodiment and the measuring method and the measuring system of heart rate, it comprises
Pulse blood oxygen instrument comprises photoelectricity blood oxygen detecting probe, is used to detect obtain trap and the trap change curve of human body to HONGGUANG and infrared light, utilizes the Beer-Lambert law to calculate blood oxygen saturation and heart rate; Pulse blood oxygen instrument also comprises H bridge drive circuit, the photoelectric current amplifying circuit that is connected with H bridge drive circuit, the removing DC road that is connected with the photoelectric current amplifying circuit, the counting circuit that is connected with the removing DC road respectively, bluetooth module circuit, cable data transport module circuit, ZIGBEE short-distance wireless communication device.Pulse blood oxygen instrument also is connected with the display that is used for showing in real time blood oxygen saturation and heart rate.
Data sending device is connected with pulse blood oxygen instrument, and blood oxygen saturation and heart rate are sent to data reception gateway; Data sending device is bluetooth module, cable data transmitting device and ZIGBEE short-distance wireless data transmission device in the present embodiment.
Data receive gateway, are connected with data sending device, collect the data of data sending device and forward the data to data storage device;
Data storage device receives gateway with data and is connected, and blood oxygen saturation and heart rate that pulse blood oxygen instrument is calculated carry out data storage; Data storage device is the computer server with data storage function;
Data sink is connected with data storage device, and personnel transfer blood oxygen saturation and heart rate data in the data storage device by data sink.Data sink comprises PC, mobile phone and palm PC.
Below introduce the operation principle of this measuring system by the measuring method that blood oxygen saturation and heart rate are described in detail in detail.
Referring to accompanying drawing 1 and accompanying drawing 2, photoelectricity blood oxygen detecting probe is placed on position to be detected on the human body, pulse blood oxygen instrument is selected by the IO port and the DA output voltage amplitude drives red-light LED and infrared light LED is alternately luminous, shine tested position, the two-way transillumination obtains the photo-signal that two-way changes through opto-electronic conversion.
Photo-signal is through the photoelectric current amplifying circuit, i.e. trans-impedance amplifier OA0 in the present embodiment, and signal is through trans-impedance amplifier OA0 output voltage signal.Comprise very big direct current signal and very little AC signal in the voltage signal this moment, and direct current signal is to be formed by the scattering of tissues such as the skeleton of human body, muscle, blood vessel to light wave, and the corresponding arterial blood cyclic fluctuation of AC signal is to the absorption effect of light wave.Therefore must the filtering direct current signal, amplify and extract useful AC signal, so with the voltage signal input difference amplifier OA1 of OA0 output.The pseudo-analog ground of difference amplifier is provided by DAC1, and the DAC1 output valve becomes positively related empirical value in the DAC0 output voltage amplitude, and revises by the brightness adaptive algorithm.Alternating component through signal behind the OA1 is exaggerated only remaining a spot of flip-flop.Sample the respectively output signal of OA0 and OA1 of ADC, OA0 signal amplitude through the brightness adaptive algorithm analysis voltage output amplitude of DAC0 is revised, control LED brightness guarantees that photoelectric current is in the scope that can survey.The OA1 signal is used for revising the output of DAC1 through the analysis of brightness adaptive algorithm, and after guaranteeing to remove direct current, signal is in suitable interval.The AC signal that obtain this moment is exactly that aliasing interferential pulse wave signal.
Pulse wave is a kind of physiological signal based on low-frequency component, and healthy people's pulse energy mainly is distributed in 0.5～5Hz scope.Pulse wave is attended by bigger baseline drift and stronger noise jamming, and main interference has three kinds: baseline drift, high frequency random disturbances and motion artifact noise.Therefore the design accuracy that wants to reach higher must be removed these interference.At first sampled signal is removed the high frequency random disturbances through low-pass filtering, pass through the direct current tracking filter then and extract the central remaining DC component of signal, eliminate the baseline drift interference that flip-flop causes by doing difference with original signal.
Become pulse wave signal mainly in disturbing composition through above processing back motion artifact noise.Extraction designer people for pulse wave has adopted a lot of diverse ways, detects such as threshold values, and the differential threshold values is sent out, volume wave characteristic extraction algorithm, adaptive filter algorithm, sliding window method.Because the randomness of motion artifact noise and instability threshold judgement can occur judging by accident and fail to judge etc. and do not meet the actual requirement of actual custodial care facility real-time as adaptive-filtering and volume wave characteristic extraction algorithm, have increased hardware cost.And sliding window sends out and can effectively avoid the waveform drift that the motion artifact noise causes and the influence of distortion, and algorithm is simple, the real-time height.
The sliding window method is to utilize a kind of method of pulse wave local feature real-time judge pulse cycle, two not isometric formations are at first set up in the judgement of pulse cycle, queue row record pulse wave sampled value, short formation is equivalent to the window of a slip on pulse wave signal, window should have certain width, greater than the noise time, but need less than pulse cycle.Judge then, process is as follows: then be judged to be a trough when the minima position is in the window medium position, detect trough and continue to slip over several sampled points with rear hatch, but do not reexamine minima, guarantee that a last trough has left window center, continue inspection minima position then and determine next trough.Referring to accompanying drawing 3,1 position represents to use window to determine trough among the figure, and 2 position represents to use window to determine to leave trough among the figure, and 3 position represents to use window to seek trough among the figure.Signal detects peak-to-peak value and pulse cycle through the sliding window method, calculates blood oxygen saturation and heart rate according to the Beer-Lambert law then, simultaneously blood oxygen saturation and heart rate is outputed to the LCD demonstration.
Pulse blood oxygen instrument obtains the trap of human body to HONGGUANG and infrared light by Photoelectric Detection, with the trap change curve, after utilizing the Beer-Lambert law to calculate blood oxygen saturation and heart rate blood oxygen saturation and heart rate value are shown on LCD, can pass through bluetooth or ZIGBEE short-distance wireless communication mode according to user's selection simultaneously, forward the data to the data in server center.
Wherein can select to forward the data to by the ZIGBEE communication modes ZIGBEE gateway of family during in family as the user, the ZIGBEE gateway receives the server that data can be forwarded to the assigned ip address behind the valid data by the Internet.When the user can select when outdoor or open-air by the bluetooth communication mode, data are sent on the terminal units such as smart mobile phone that client software is installed, client software can be forwarded to the Internet by GPRS or CDMA cell phone network with the pulse blood oxygen data that receive, and arrives the server of assigned ip address by the Internet.
Server is with the data input database that receives.User or medical personnel can monitor the patient in real time by the WEB server of Telnet data center, diagnosis, and personal health archives etc. are set up in information inquiry.Can see that by above introduction this system schema can realize the remote real time monitoring to patient's blood oxygen saturation and heart rate, imagine the solution of the data communication problem of patient under two kinds of typical environment simultaneously, can satisfy general patient's demand.
By above-mentioned embodiment, but be not difficult to find out that the present invention is a kind of detection efficiency height, the blood oxygen saturation of using portable remote control and the measuring method and the measuring system of heart rate.
Abovely the present invention is described in detail in conjunction with embodiment; only be explanation technical conceive of the present invention and characteristics; its purpose is to allow the people that is familiar with this technology understand content of the present invention and is implemented; can not limit protection scope of the present invention with this; all equivalences that spirit is done according to the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (10)
1. the measuring method and the measuring system of blood oxygen saturation and heart rate is characterized in that: comprise the steps
(1) uses HONGGUANG and infrared light that human body is measured, measure the back result and obtain the photo-signal that two-way changes through opto-electronic conversion;
(2) filter direct current signal, extract AC signal;
(3) use the sliding window method to filter the noise of AC signal, filtered noise then is judged to be a trough when the minima position is in the window medium position, detect trough and continue to slip over several sampled points with rear hatch, but do not reexamine minima, guarantee that a last trough has left window center, continue inspection minima position and determine next trough, finally detect peak-to-peak value and pulse cycle;
(4) calculate blood oxygen saturation and heart rate according to the Beer-Lambert law;
(5) blood oxygen saturation and heart rate data are sent to data reception gateway by bluetooth module, cable data transmitting device, wireless data transmission device, data receive gateway data are sent to data storage device, and personnel transfer blood oxygen saturation and heart rate data in the data storage device by data sink.
2. the measuring method and the measuring system of a kind of blood oxygen saturation according to claim 1 and heart rate is characterized in that: also comprise the step of using amplifier that signal is amplified between described step (1) and step (2).
3. the measuring method and the measuring system of a kind of blood oxygen saturation according to claim 1 and heart rate is characterized in that: use difference amplifier to filter direct current signal in the described step (2), extract AC signal.
4. the measuring method and the measuring system of blood oxygen saturation and heart rate, it is characterized in that: it comprises pulse blood oxygen instrument, comprise photoelectricity blood oxygen detecting probe, detection obtains the trap of human body to HONGGUANG and infrared light, with the trap change curve, utilize the Beer-Lambert law to calculate blood oxygen saturation and heart rate;
Data sending device is connected with described pulse blood oxygen instrument, and blood oxygen saturation and heart rate are sent to data reception gateway;
Data receive gateway, are connected with described data sending device, collect the data of described data sending device and forward the data to data storage device;
Data storage device receives gateway with described data and is connected, and blood oxygen saturation and heart rate that described pulse blood oxygen instrument is calculated carry out data storage;
Data sink is connected with described data storage device, and personnel transfer blood oxygen saturation and heart rate data in the data storage device by data sink.
5. the measuring method and the measuring system of a kind of blood oxygen saturation according to claim 4 and heart rate is characterized in that: described pulse blood oxygen instrument comprises H bridge drive circuit, the photoelectric current amplifying circuit that is connected with described H bridge drive circuit, the removing DC road that is connected with described photoelectric current amplifying circuit, the counting circuit that is connected with described removing DC road respectively, bluetooth module circuit, cable data transport module circuit, wireless data transfer module circuit.
6. the measuring method and the measuring system of a kind of blood oxygen saturation according to claim 4 and heart rate is characterized in that: described data sending device is one or more in bluetooth module, cable data transmitting device, the wireless data transmission device.
7. the measuring method and the measuring system of a kind of blood oxygen saturation according to claim 6 and heart rate is characterized in that: described wireless data transmission device is a ZIGBEE short-distance wireless communication device.
8. the measuring method and the measuring system of a kind of blood oxygen saturation according to claim 4 and heart rate is characterized in that: described data storage device is the computer server with data storage function.
9. the measuring method and the measuring system of a kind of blood oxygen saturation according to claim 4 and heart rate is characterized in that: described data sink comprises one or more in PC, mobile phone, the palm PC.
10. the measuring method and the measuring system of a kind of blood oxygen saturation according to claim 4 and heart rate is characterized in that: described pulse blood oxygen instrument is connected with the display that is used for showing in real time blood oxygen saturation and heart rate.
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| CN 201110076472 CN102178536B (en) | 2011-03-29 | 2011-03-29 | Method and system for measuring oxygen saturation and heart rate |
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Cited By (18)
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| CN102512139A (en) * | 2011-11-29 | 2012-06-27 | 乔德才 | Maximal oxygen uptake testing and evaluating apparatus |
| CN103169479A (en) * | 2011-12-22 | 2013-06-26 | 张国源 | Blood oxygen measuring system, physiological measuring device thereof and pulse wave analysis method thereof |
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| CN103622684A (en) * | 2013-12-11 | 2014-03-12 | 东南大学 | Control method for portable heart rate monitoring system |
| CN103799983A (en) * | 2014-02-11 | 2014-05-21 | 辛勤 | Physiological parameter measurement system |
| CN103892845A (en) * | 2014-04-08 | 2014-07-02 | 中国科学院微电子研究所 | System for measuring blood oxygen content |
| CN104107038A (en) * | 2013-04-16 | 2014-10-22 | 达尔生技股份有限公司 | Pulse wave signal denoising processing method and device and pulse oximeter |
| CN106725412A (en) * | 2017-03-21 | 2017-05-31 | 广西师范大学 | Method for measuring heart rate and device |
| CN106999062A (en) * | 2014-11-18 | 2017-08-01 | 祥明大学校产学协力团 | A method for extracting heart information based on human micro-movement |
| CN107184187A (en) * | 2017-07-03 | 2017-09-22 | 重庆大学 | Pulse Wave Signal Denoising processing method based on DTCWT Spline |
| CN107456219A (en) * | 2017-09-07 | 2017-12-12 | 成都云卫康医疗科技有限公司 | One kind is based on Pearson correlation coefficient Dynamic Heart Rate and blood oxygen measuring method |
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| CN108024758A (en) * | 2015-08-10 | 2018-05-11 | 皇家飞利浦有限公司 | End-tidal CO2Simplify display |
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| CN108024758A (en) * | 2015-08-10 | 2018-05-11 | 皇家飞利浦有限公司 | End-tidal CO2Simplify display |
| CN108024739A (en) * | 2015-09-23 | 2018-05-11 | 皇家飞利浦有限公司 | Pulse oximetry suggests another test |
| CN106725412A (en) * | 2017-03-21 | 2017-05-31 | 广西师范大学 | Method for measuring heart rate and device |
| CN107184187A (en) * | 2017-07-03 | 2017-09-22 | 重庆大学 | Pulse Wave Signal Denoising processing method based on DTCWT Spline |
| CN107184187B (en) * | 2017-07-03 | 2019-08-02 | 重庆大学 | Pulse Wave Signal Denoising processing method based on DTCWT-Spline |
| CN107456219A (en) * | 2017-09-07 | 2017-12-12 | 成都云卫康医疗科技有限公司 | One kind is based on Pearson correlation coefficient Dynamic Heart Rate and blood oxygen measuring method |
| CN107468221A (en) * | 2017-09-12 | 2017-12-15 | 济南大学 | Pulse wave signal processing method and lung cancer detection system based on Jin Shi pulse studies |
| CN108618757A (en) * | 2018-03-27 | 2018-10-09 | 成都信息工程大学 | A kind of wireless physical sign monitoring system and method for health care double-purpose |
| CN115666356A (en) * | 2020-05-17 | 2023-01-31 | 吉温成像有限公司 | Flow-based dynamic connection system |
| CN114557686A (en) * | 2020-11-27 | 2022-05-31 | 阿里巴巴集团控股有限公司 | Skin moisture detection method, device, device and computer readable storage medium |
| CN120052894A (en) * | 2025-04-18 | 2025-05-30 | 深圳市格阳医疗科技有限公司 | Implantable catheter oximeter and monitoring method thereof |
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