CN204950968U - Blood oxygen saturability detection device - Google Patents
Blood oxygen saturability detection device Download PDFInfo
- Publication number
- CN204950968U CN204950968U CN201520710306.6U CN201520710306U CN204950968U CN 204950968 U CN204950968 U CN 204950968U CN 201520710306 U CN201520710306 U CN 201520710306U CN 204950968 U CN204950968 U CN 204950968U
- Authority
- CN
- China
- Prior art keywords
- converter
- circuit
- blood oxygen
- photoelectric sensor
- oxygen saturation
- 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.)
- Expired - Fee Related
Links
- 239000008280 blood Substances 0.000 title claims abstract description 36
- 210000004369 blood Anatomy 0.000 title claims abstract description 36
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 31
- 239000001301 oxygen Substances 0.000 title claims abstract description 31
- 238000001514 detection method Methods 0.000 title abstract description 3
- 230000003750 conditioning effect Effects 0.000 claims abstract description 15
- 238000013519 translation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 7
- 238000012360 testing method Methods 0.000 abstract description 3
- 108010054147 Hemoglobins Proteins 0.000 description 6
- 102000001554 Hemoglobins Human genes 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 230000010349 pulsation Effects 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 5
- 108010064719 Oxyhemoglobins Proteins 0.000 description 4
- 230000003321 amplification Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- 208000029257 vision disease Diseases 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000002835 absorbance Methods 0.000 description 2
- 230000036772 blood pressure Effects 0.000 description 2
- 230000000747 cardiac effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000031700 light absorption Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 230000002792 vascular Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 239000003994 anesthetic gas Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
Landscapes
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The utility model discloses a blood oxygen saturability detection device, including microprocessor, DA converter, AD converter, LED drive circuit and photoelectric sensor, microprocessor connects DA converter, AD converter, voice broadcast ware and display simultaneously, the DA converter still connects gradually LED drive circuit, photoelectric sensor, amplifier, wave filter, signal conditioning circuit, voltage current converting circuit and integrating circuit, and integrating circuit still connects with the AD converter. The utility model discloses an above -mentioned principle, easy operation is difficult for receiving the interference of other signals in the testing process, and ultimate measuring result can carry out voice broadcast or show that screen display shows, presents form diversification more, even if sight -impaired people also can use.
Description
Technical field
This utility model relates to Intensive Care Therapy field, is specifically related to blood oxygen saturation checkout gear.
Background technology
Since the custodial care facility appearance of the simple function that 20 century 70s have, it just progressively obtains the extensive use of clinical monitoring.But the custodial care facility of simple function is due to the limitation of its monitoring function, far can not meet the needs of clinical practice, seriously constrain the rescue of hospital to numerous critical patients.Enter the nineties, along with the development of sensing technology and electronic technology, monitored parameters is on the increase, and is guarded develop into multi-parameter monitoring by the single parameter in past.Such as guarded by single cardiac monitoring, blood pressure monitoring, blood oxygen saturation, progressively develop into the multi-parameter monitor comprising electrocardio, breathing, blood pressure, blood oxygen saturation, body temperature, End-tidal carbon dioxide, cardiac output and anesthetic gases analysis etc., these equipment just play positive effect in the diagnosis of hospital clinical.And the detection of blood oxygen saturation can judge that blood oxygen saturation is higher or on the low side, thus judge that whether patient is normal.Blood oxygen saturation refers to that hemoglobin is by oxygen-saturated percentage ratio, and namely the oxygen content of hemoglobin is multiplied by 100 with the ratio of oxygen binding capacity.Depend primarily on arterial partial pressure of oxygen (PO2).Blood oxygen saturation reflects the size of blood oxygen dividing potential drop indirectly, is the index understanding hemoglobin oxygen content degree and hemoglobin system buffer capacity.Therefore only need realize by detecting arterial blood when detecting.Existing blood oxygen saturation testing process is complicated, and easily by other signal disturbing in measuring process, and it is single finally to present result formats, is unfavorable for the use of dissimilar crowd.
Utility model content
This utility model overcomes the deficiencies in the prior art, blood oxygen saturation checkout gear is provided, this checkout gear is simple to operate, the interference of other signal is not subject in testing process, final measurement result can carry out voice broadcast or display screen display, appearance form is more diversified, even if the people of visual disorder also can use.
For solving above-mentioned technical problem, this utility model is by the following technical solutions: blood oxygen saturation checkout gear, comprise microprocessor, D/A converter, A/D converter, LED drive circuit and photoelectric sensor, described microprocessor connects D/A converter, A/D converter, voice announcer and display simultaneously; Described D/A converter also connects LED drive circuit, photoelectric sensor, amplifier, wave filter, signal conditioning circuit, voltage-current converter circuit and integrating circuit successively, and integrating circuit is also connected with A/D converter.In use, the drive singal of microprocessor timesharing produces wavelength to be the HONGGUANG of 660nm and wavelength the be infrared light of 940nm, after D/A conversion by signal transmission to LED drive circuit.This signal is carried out power amplification by LED drive circuit, then is sent to successively in HONGGUANG and infrared light emitting diode that photoelectric sensor upper arm places side by side, makes their utilizing emitted light pulses.The photoelectric sensor of underarm, will convert the signal of telecommunication to through the arterial vascular HONGGUANG of finger and infrared light.Because the concentration of the HbO2 Oxyhemoglobin HbO2 in blood and reproducibility Hb H b is done periodically to change along with the pulsation of blood, therefore they also change in pulsation the absorption of light, and the signal intensity causing photoelectric sensor to export thus also changes with HbO2 and the Hb concentration ratio pulsation in blood.The signal of telecommunication that photoelectric sensor exports is after amplification, filtering and signal conditioning circuit, ripple component in these two signals is separated, send into the voltage/current conversion circuit with automatic gain adjustment function, then by integrating circuit to signal code integration, convert digital signal to through A/D again, give microprocessor.For the data gathered, application Lambert-Beer's law, microprocessor just can calculate the size of blood oxygen saturation, thus measure blood oxygen saturation, compare with normal value, thus obtain the whether normal result of blood oxygen saturation, this measurement result can be shown by voice broadcast or display screen by selectivity as required, appearance form is more diversified, even if the people of visual disorder also can use.Because signal is fainter, in this device, utilize amplifier to amplify to acquired signal, also utilize wave filter to filter out interference noise simultaneously and utilize signal conditioning circuit again to process signal, thus finally obtain accurate clearly measuring-signal.
Described photoelectric sensor is finger cot type photoelectric sensor.This kind of photoelectric sensor to be conveniently enclosed within human body and not easily landing, ensures the accuracy measured further.
Described signal conditioning circuit is the signal conditioning circuit that can carry out signal base line level translation and go DC component.The final measuring-signal of further guarantee accurate.
Described microprocessor model is C8051F020.Be fully-integrated mixed-signal system level MCU chip, there are 64 digital I/O pins or 32 digital I/O pins, measurement needs can be met completely.
Described microprocessor is timesharing can produce the microprocessor of HONGGUANG and infrared light drive singal.Utilize photoelectric sensor to differ greatly due to HbO2 Oxyhemoglobin in blood and the reduced hemoglobin absorbance to the infrared light of the wavelength HONGGUANG that is 660nm and 940nm, therefore by this kind of mode, utilize photoelectric sensor to measure blood oxygen saturation simultaneously.
Compared with prior art, the beneficial effects of the utility model are:
1, because signal is fainter, in this device, utilize amplifier to amplify to acquired signal, also utilize wave filter to filter out interference noise simultaneously and utilize signal conditioning circuit again to process signal, thus finally obtain accurate clearly measuring-signal.
2, this measurement result can selectivity be by voice broadcast or display screen display as required, and appearance form is more diversified, adapts to more diversified crowd and uses, and the people being particularly applicable to visual disorder uses, and this apparatus structure is simple in addition, easy to operate.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present utility model.
Detailed description of the invention
Be further elaborated this utility model below in conjunction with accompanying drawing, embodiment of the present utility model is not limited thereto.
Embodiment 1:
As shown in Figure 1, this utility model comprises microprocessor, D/A converter, A/D converter, LED drive circuit and photoelectric sensor, and described microprocessor connects D/A converter, A/D converter, voice announcer and display simultaneously; Described D/A converter also connects LED drive circuit, photoelectric sensor, amplifier, wave filter, signal conditioning circuit, voltage-current converter circuit and integrating circuit successively, and integrating circuit is also connected with A/D converter.In use, the drive singal of microprocessor timesharing produces wavelength to be the HONGGUANG of 660nm and wavelength the be infrared light of 940nm, after D/A conversion by signal transmission to LED drive circuit.This signal is carried out power amplification by LED drive circuit, then is sent to successively in HONGGUANG and infrared light emitting diode that photoelectric sensor upper arm places side by side, makes their utilizing emitted light pulses.The photoelectric sensor of underarm, will convert the signal of telecommunication to through the arterial vascular HONGGUANG of finger and infrared light.Because the concentration of the HbO2 Oxyhemoglobin HbO2 in blood and reproducibility Hb H b is done periodically to change along with the pulsation of blood, therefore they also change in pulsation the absorption of light, and the signal intensity causing photoelectric sensor to export thus also changes with HbO2 and the Hb concentration ratio pulsation in blood.The signal of telecommunication that photoelectric sensor exports is after amplification, filtering and signal conditioning circuit, ripple component in these two signals is separated, send into the voltage/current conversion circuit with automatic gain adjustment function, then by integrating circuit to signal code integration, convert digital signal to through A/D again, give microprocessor.For the data gathered, application Lambert-Beer's law, microprocessor just can calculate the size of blood oxygen saturation, thus measure blood oxygen saturation, compare with normal value, thus obtain the whether normal result of blood oxygen saturation, this measurement result can be shown by voice broadcast or display screen by selectivity as required, appearance form is more diversified, even if the people of visual disorder also can use.Because signal is fainter, in this device, utilize amplifier to amplify to acquired signal, also utilize wave filter to filter out interference noise simultaneously and utilize signal conditioning circuit again to process signal, thus finally obtain accurate clearly measuring-signal.
Embodiment 2:
The present embodiment is preferably as follows on the basis of embodiment 1: described photoelectric sensor is finger cot type photoelectric sensor.This kind of photoelectric sensor to be conveniently enclosed within human body and not easily landing, ensures the accuracy measured further.
Described signal conditioning circuit is the signal conditioning circuit that can carry out signal base line level translation and go DC component.The final measuring-signal of further guarantee accurate.
Described microprocessor model is C8051F020.Be fully-integrated mixed-signal system level MCU chip, there are 64 digital I/O pins or 32 digital I/O pins, measurement needs can be met completely.
Described microprocessor is timesharing can produce the microprocessor of HONGGUANG and infrared light drive singal.Utilize photoelectric sensor to differ greatly due to HbO2 Oxyhemoglobin in blood and the reduced hemoglobin absorbance to the infrared light of the wavelength HONGGUANG that is 660nm and 940nm, therefore by this kind of mode, utilize photoelectric sensor to measure blood oxygen saturation simultaneously.
Just this utility model can be realized as mentioned above.
Claims (5)
1. blood oxygen saturation checkout gear, is characterized in that: comprise microprocessor, D/A converter, A/D converter, LED drive circuit and photoelectric sensor, and described microprocessor connects D/A converter, A/D converter, voice announcer and display simultaneously; Described D/A converter also connects LED drive circuit, photoelectric sensor, amplifier, wave filter, signal conditioning circuit, voltage-current converter circuit and integrating circuit successively, and integrating circuit is also connected with A/D converter.
2. blood oxygen saturation checkout gear according to claim 1, is characterized in that: described photoelectric sensor is finger cot type photoelectric sensor.
3. blood oxygen saturation checkout gear according to claim 1, is characterized in that: described signal conditioning circuit is the signal conditioning circuit that can carry out signal base line level translation and go DC component.
4. blood oxygen saturation checkout gear according to claim 1, is characterized in that: described microprocessor model is C8051F020.
5. blood oxygen saturation checkout gear according to claim 1, is characterized in that: described microprocessor is timesharing can produce the microprocessor of HONGGUANG and infrared light drive singal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520710306.6U CN204950968U (en) | 2015-09-15 | 2015-09-15 | Blood oxygen saturability detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520710306.6U CN204950968U (en) | 2015-09-15 | 2015-09-15 | Blood oxygen saturability detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204950968U true CN204950968U (en) | 2016-01-13 |
Family
ID=55046066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520710306.6U Expired - Fee Related CN204950968U (en) | 2015-09-15 | 2015-09-15 | Blood oxygen saturability detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204950968U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105054944A (en) * | 2015-09-15 | 2015-11-18 | 成都汉康信息产业有限公司 | Detection terminal for degree of blood oxygen saturation |
| CN105959012A (en) * | 2016-04-21 | 2016-09-21 | 矽力杰半导体技术(杭州)有限公司 | Voltage-type analog-to-digital conversion circuit and photoelectric sensor using same |
-
2015
- 2015-09-15 CN CN201520710306.6U patent/CN204950968U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105054944A (en) * | 2015-09-15 | 2015-11-18 | 成都汉康信息产业有限公司 | Detection terminal for degree of blood oxygen saturation |
| CN105959012A (en) * | 2016-04-21 | 2016-09-21 | 矽力杰半导体技术(杭州)有限公司 | Voltage-type analog-to-digital conversion circuit and photoelectric sensor using same |
| CN105959012B (en) * | 2016-04-21 | 2019-05-07 | 矽力杰半导体技术(杭州)有限公司 | Voltage-type analog to digital conversion circuit and the photoelectric sensor for applying it |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6496711B1 (en) | Pulse oximeter probe | |
| Wan et al. | Reflective type blood oxygen saturation detection system based on MAX30100 | |
| JPH01500494A (en) | Method and apparatus for displaying perfusion and oxygen saturation trends in oxygen concentration measurement | |
| CN105030217A (en) | Portable motion monitoring and detecting equipment and motion monitoring and detecting method | |
| Xie et al. | Development of wearable pulse oximeter based on internet of things and signal processing techniques | |
| CN101224107A (en) | Method for measuring blood pressure and oxygen, and device thereof | |
| CN103750832A (en) | Real-time wireless blood pressure monitoring system, blood pressure measuring device and blood pressure analysis method | |
| CN103027691A (en) | Digital measuring device and digital measuring method for physiological and biochemical parameters | |
| CN105054943A (en) | Oxyhemoglobin saturation detection terminal bringing convenience to monitoring | |
| CN204950968U (en) | Blood oxygen saturability detection device | |
| CN108013869A (en) | A kind of blood pressure heart rate measuring system based on smart mobile phone | |
| Gupta et al. | Design and development of pulse oximeter | |
| Abhishek et al. | Non-invasive measurement of heart rate and hemoglobin concentration level through fingertip | |
| Dewantoro et al. | Development of smartphone-based non-invasive hemoglobin measurement | |
| Zneid et al. | Non-invasive blood pressure remote monitoring instrument based microcontroller | |
| CN204950970U (en) | Blood oxygen saturability detection appearance safe in utilization | |
| CN107303183A (en) | The algorithm of apnea monitoring in a kind of sleep quality | |
| CN105105763A (en) | Safe oxyhemoglobin saturation detecting device easy to use | |
| CN204950969U (en) | Blood oxygen saturability detection appearance convenient to control | |
| CN201481422U (en) | Light-frequency converting pulse oximeter | |
| CN105054944A (en) | Detection terminal for degree of blood oxygen saturation | |
| CN110051366A (en) | A kind of carbon oxygen saturation detection device and method | |
| Ajith et al. | Integration of low cost SpO2 sensor in a wearable monitor | |
| CN213406028U (en) | Wearable wireless continuous reflection type oxyhemoglobin saturation monitoring device | |
| CN206964633U (en) | A kind of hurtless measure blood oxygen saturation detecting system based on infrared spectrum |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160113 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |