CN101229060A - Reflex type infra-red artery waveform collector and sensor - Google Patents
Reflex type infra-red artery waveform collector and sensor Download PDFInfo
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- CN101229060A CN101229060A CNA2007100630260A CN200710063026A CN101229060A CN 101229060 A CN101229060 A CN 101229060A CN A2007100630260 A CNA2007100630260 A CN A2007100630260A CN 200710063026 A CN200710063026 A CN 200710063026A CN 101229060 A CN101229060 A CN 101229060A
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- infrared
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- artery waveform
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Abstract
The invention discloses a reflective infrared arteriogram collector and sensor, belonging to a field of medical apparatus. The reflective infrared arteriogram collector comprises a shell with a detecting window, a circuit board, an infrared transmitting tube, an infrared receiving tube and a resistance. The infrared transmitting tube and the infrared receiving tube are arranged at the same side of the circuit board. The infrared transmitting tube and/or the infrared receiving tube are connected with a resistance. The invention has the advantages of low production cost, that the infrared reflex sensor for artery and blood stream can accurately collect the blood blow waves of a plurality of parts of a human body like a digital artery, a radial artery, a cerebral artery, a temple and even a palm and a lip part and has an extremely wide application, is a major human evangel for controlling and quickly diagnosing the human cardiocerebriovascular diseases.
Description
Technical field
The present invention relates to a kind of reflex type infra-red artery waveform collector and pick off, belong to medical Instrument field.
Background technology
Traditional many employing semiconductor strain formula pressure transducers of noinvasive blood trouble stream parameter acquisition device extract the artery blood flow information of scratching.Semiconductor strain formula pressure sensor structure principle is that semiconductor gauge or bridge will paste on the resilient beams of metal, and the volume shape is subjected to considerable restraint, and the cost height, the life-span short (perishable).Infrared transmission formula (referring to arteries and veins) pick off since the acral arteriovenous blood capillary of transmission too much (blood flow phase place superposition) cause the blood flow waveform distortion big, waveform is nonstandard to be unsuitable for the blood flow parameter analysis, the scope of application is narrow relatively.
Summary of the invention
First technical problem that the present invention will solve provides a kind of sensitivity, the accurate and low reflex type infra-red artery waveform collector of cost.
Another technical problem that the present invention will solve provides a kind of sensitivity, the accurate and low reflex type infra-red artery waveform pick off of cost.
For achieving the above object, through a large amount of test comparisons, adopt following design at last:
Reflex type infra-red artery waveform collector is made up of shell, circuit board, infrared transmitting tube, infrared receiving tube and the resistance of band detection window; Infrared transmitting tube and infrared receiving tube are located at the homonymy of circuit board; Infrared transmitting tube and/or infrared receiving tube connect with resistance.
Described detection window place is provided with optical filter.Optical filter mainly plays decoration function, but the interference of the visible light of filtering simultaneously, free of light filter does not influence the performance of infrared reflection red artery waveform collector, and therefore also the water white transparency body of available no light-filtering characteristic replaces.Colour light filter sheet optical transmission characteristics is preferably in outside the 900-980 nanometer, otherwise influences transducer sensitivity.
Infrared transmitting tube is an infrared-emitting diode, and emission wavelength is the 900-980 nanometer, preferred 940 nanometers; Infrared transmitting tube series connection resistance is the resistance of 100-5100 ohm.
Infrared receiving tube is infrared reception audion or infrared receiving diode, and the infrared reception audion Standard resistance range of need connecting is the resistance of 1000-10000 ohm.
Centre distance between infrared transmitting tube and the infrared receiving tube is the 1-20 millimeter, preferred 2-10 millimeter.It is sensitive to survey the shallow-layer blood vessel within the scope during close together relatively, and the relative depth measurement layer of distance blood vessel is sensitive.
The reflex type infra-red artery waveform pick off is made up of reflex type infra-red artery waveform collector, signal amplifier, AD switching signal processor (CPU) and signal output part; Wherein reflex type infra-red artery waveform collector is made up of shell, circuit board, infrared transmitting tube, infrared receiving tube and the resistance of band detection window; Infrared transmitting tube and infrared receiving tube are located at the homonymy of circuit board; Infrared transmitting tube and/or infrared receiving tube connect with resistance.
Signal amplifier and AD switching signal processor can be located in the same shell with reflex type infra-red artery waveform collector; Also can make split typely, carry out information gathering respectively and amplify the function of computing; Signal amplifier, AD switching signal processor and display (as oscillograph) can also be formed one, make the signal of output cooperate corresponding software processes after, directly on display, be rendered as the red artery waveform of wanting to see the position.Other common transmission means also comprise by USB or Bluetooth transmission does further processing and analysis to mobile phone or computer to blood flow waveform.
Available buffer amplification in case of necessity was every straight processing before the waveform of reflex type infra-red artery waveform collector collection entered AD switching signal processor.
The principle of red artery waveform information gathering of the present invention is: the infrared light of infrared transmitting tube emission sees through filter (also shouldn't filter) and is irradiated into human body skin, modulated by vascular flow during blood vessel during light process tremulous pulse (influence that is subjected to blood flow produces fluctuation), light carries the information of fluctuation (being modulated by blood flow) after by vasoreflex, and tabula rasa (also shouldn't filter) is received by infrared receiving tube after filtration; The DC voltage of infrared receiving tube output has just comprised interchange blood flow waveform information, and the signal of reception amplifies by filtering and handles, and can obtain blood flow information.
The present invention utilizes the infrared external reflection method to extract the artery blood flow waveform, its advantage is: simple in structure, easy to use, can collect the blood flow ripple at a lot of positions of human body exactly, for example refer to tremulous pulse, scratch tremulous pulse, cerebral arteries, temple even palm and lip, collection has very high medical value to human body different parts noinvasive blood flow waveform, and the range of application prospect is very wide; The method of gathering blood flow waveform with this method noinvasive is a big Gospel of human cardiovascular and cerebrovascular disease prevention and quick diagnosis.
The invention will be further described below in conjunction with the drawings and specific embodiments, and its embodiment is not limited to this, therefore all this areas of having done according to the disclosure of invention be equal to replacement, all belong to protection scope of the present invention.
Description of drawings
Fig. 1 is a blood information acquisition principle sketch map of the present invention.
Fig. 2 is the internal structure sketch map of information acquisition device of the present invention.
Fig. 3 is a pick off external structure sketch map of the present invention.
Fig. 4-1 is first kind of circuit diagram of information acquisition device of the present invention.
Fig. 4-2 is second kind of circuit diagram of information acquisition device of the present invention.
Fig. 5 is the integrated circuit design drawing of pick off of the present invention.
The specific embodiment
Consult Fig. 1 to shown in Figure 5, infrared reflection artery blood flow pick off is made up of reflex type infra-red artery waveform collector 1, signal amplifier 2, AD switching signal processor (CPU) 3 and signal output part 4; Wherein reflex type infra-red artery waveform collector 1 is made up of shell 11, circuit board 12, infrared transmitting tube 13, infrared receiving tube 14 and the resistance of band detection window 15; Infrared transmitting tube 13 and infrared receiving tube 14 are located at the homonymy of circuit board 12, and the centre distance between infrared transmitting tube 13 and the infrared receiving tube 14 is 2 millimeters-10 millimeters.Also can be provided with filter 16 (also can omit not) perhaps with for example glass replacement of normal transparent material at window 15 places.Signal amplifier 2, AD switching signal processor (CPU) 3 also are located on the circuit board 12 of shell 11 inside.Being provided with electric capacity between red artery waveform collector 1 and signal amplifier 2 is used for every directly.
Infrared transmitting tube 13 emission infrared lights, infrared light is tabula rasa 16 after filtration, is irradiated into human body skin 5, and the influence that is subjected to blood flow during light process tremulous pulse 6 produces fluctuation, carries the information of fluctuation after light is reflected, and tabula rasa 16 is received by infrared receiving tube 14 after filtration again; The arteriogram of gathering (containing the direct current composition) is sent into AD switching signal processor 3 (a lot of CPU carry the AD conversion) through capacitor C every directly amplifying through signal amplifier 2 again, and the information via outfan after the processing passes 4 (as USB; Bluetooth etc.) send into computer, PDA or mobile phone (follow according to needs and cooperate corresponding software) and just obtained human body artery oscillogram and blood flow parameter value that we want.
Claims (10)
1. reflex type infra-red artery waveform collector is characterized in that: be made up of shell, circuit board, infrared transmitting tube, infrared receiving tube and the resistance of being with detection window; Infrared transmitting tube and infrared receiving tube are located at the homonymy of circuit board; Infrared transmitting tube and/or infrared receiving tube connect with resistance.
2. reflex type infra-red artery waveform collector according to claim 1 is characterized in that: described detection window place is provided with optical filter.
3. reflex type infra-red artery waveform collector according to claim 1 is characterized in that: described infrared transmitting tube is an infrared-emitting diode, and emission wavelength is the 900-980 nanometer.
4. reflex type infra-red artery waveform collector according to claim 3 is characterized in that: described emission wavelength is 940 nanometers.
5. reflex type infra-red artery waveform collector according to claim 1 is characterized in that: described infrared transmitting tube series connection resistance is the resistance of 100-5100 ohm.
6. reflex type infra-red artery waveform collector according to claim 1 is characterized in that: described infrared receiving tube is infrared reception audion or infrared receiving diode.
7. reflex type infra-red artery waveform collector according to claim 6 is characterized in that: described infrared reception audion series connection Standard resistance range is the resistance of 1000-10000 ohm.
8. reflex type infra-red artery waveform collector according to claim 1 is characterized in that: the centre distance between described infrared transmitting tube and the infrared receiving tube is the 1-20 millimeter.
9. reflex type infra-red artery waveform collector according to claim 8 is characterized in that: the centre distance between described infrared transmitting tube and the infrared receiving tube is the 2-10 millimeter.
10. the reflex type infra-red artery waveform pick off is characterized in that: be made up of any one described reflex type infra-red artery waveform collector, signal amplifier, AD switching signal processor and outfan in the claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100630260A CN101229060A (en) | 2007-01-24 | 2007-01-24 | Reflex type infra-red artery waveform collector and sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100630260A CN101229060A (en) | 2007-01-24 | 2007-01-24 | Reflex type infra-red artery waveform collector and sensor |
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| Publication Number | Publication Date |
|---|---|
| CN101229060A true CN101229060A (en) | 2008-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007100630260A Pending CN101229060A (en) | 2007-01-24 | 2007-01-24 | Reflex type infra-red artery waveform collector and sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103002799A (en) * | 2010-06-24 | 2013-03-27 | 日本先锋公司 | Photo-detection device and fluid measurement device |
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2007
- 2007-01-24 CN CNA2007100630260A patent/CN101229060A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103002799A (en) * | 2010-06-24 | 2013-03-27 | 日本先锋公司 | Photo-detection device and fluid measurement device |
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