CN102894965A - Device for detecting pulse signals by light interference method - Google Patents
Device for detecting pulse signals by light interference method Download PDFInfo
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- CN102894965A CN102894965A CN2012104462212A CN201210446221A CN102894965A CN 102894965 A CN102894965 A CN 102894965A CN 2012104462212 A CN2012104462212 A CN 2012104462212A CN 201210446221 A CN201210446221 A CN 201210446221A CN 102894965 A CN102894965 A CN 102894965A
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Abstract
The invention relates to a device for detecting pulse signals by a light interference method, which comprises a laser generator, a parallel light beam expander, a soft light-reflecting film, a half-reflection lens, a glass plate, a rubber bracket, a singlechip, a charge coupled device (CCD) sensor and the like, wherein the laser generator is arranged in a light channel arranged in the middle of a cylinder; the parallel light beam expander is arranged in front of the laser generator in the light channel; the glass plate is flatly arranged in the middle of the cylinder; after being reflected, the light entering the cylinder is just vertically emitted onto the half-reflection lens; the soft light-reflecting film is arranged under the half-reflection lens; the CCD sensor is arranged on the top of the cylinder; the rubber bracket is connected with the bottom of the cylinder; and a groove used for placing the wrist of a patient is arranged in the middle above the bracket. According to the device, the laser generator can give out light, a light path is controlled by the soft light-reflecting film, the half-reflection lens and the circular glass plate, interference fringe is formed on the top of the device, and the pulse beat frequency and strength can be obtained by the singlechip; and the device is simple in structure, accurate in measurement, safe and reliable.
Description
Technical field:
The invention belongs to field of photoelectric technology, be specifically related to light-interference measuring apparatus.
Background technology:
Health is the most one of problems of concern of modern humans.In traditional Chinese medical science field, traditional prestige, to hear, ask, cut be the marrow that forms over the past thousands of years.Yet feeling the pulse is to judge by the subjective experience of the traditional Chinese medical science to a great extent, so causes sometimes can judging by accident.Along with the development of electronic technology and intelligent control technology, pulse test no longer is confined to traditional manual testing's method or stethoscope method of testing, and existing research is based on the pulse test of electronic information technology.But present most of achievement in research still sticks to theoretical research, can't apply to reality.Simultaneously, research major part has before just realized the basic function of pulse test, is not very well for the correction of details.
Summary of the invention:
For above problem, purpose of the present invention just provides a kind of device that utilizes optical interferometry to detect fluctuating signal, and it obtains people's pulse information by interference of light, measures accurately, and is safe and reliable, simple in structure.
Technical scheme of the present invention is as follows:
A kind of device that utilizes optical interferometry to detect fluctuating signal, described device comprise laser generator, parallel light beam expander, soft light reflecting membrane, half anti-lens, glass plate, rubber standoff, degree of tightness knob, single-chip microcomputer and ccd sensor device.
Described laser generator is arranged in the optical channel of a side at cylinder middle part, the place ahead of laser generator arranges parallel light beam expander in optical channel, safety fills a glass plate at the cylinder middle part, the cross section 45° angle of itself and cylinder, also with incident illumination angle at 45 °, make the light that enters cylinder from optical channel through after the reflection just under the vertical cross-section directive; The reflected light light path of glass plate is settled half anti-lens in cylinder, at the soft light reflecting membrane of positioned beneath of bottom of cylinder and half anti-lens, at the top of cylinder ccd sensor.Ccd sensor connects single-chip microcomputer by control signal wire.
Other is provided with a rubber standoff, is one for laying the groove of patient's wrist in the middle of the support top, and described rubber standoff is positioned at the below of described soft light reflecting membrane can stablize patient's wrist, and support is connected with cylinder, between pass through the adjusting of degree of tightness knob.Just put people's wrist with reeded rubber standoff, the degree of tightness knob can be regulated the distance of tubular structure and support, and then regulates the tightness degree that soft light reflecting membrane contacts with arm.
Only being produced by laser generator in the cylinder of this device, light path are by soft light reflecting membrane, half anti-lens, the control of circular glass plate, thereby form interference fringe at the device top.
Adopt this device can obtain easily interference fringe, ccd sensor is converted to the signal of telecommunication with the information of interference fringe, and with electrical signal transfer to single-chip microcomputer, carry out frequency and the intensity that data analysis obtains beat pulse by single-chip microcomputer, simple in structure, measure accurately, safe and reliable, be widely used.This installs the collection of pulse and analyzes significant.
Description of drawings
Fig. 1 is the structural representation of this device
The specific embodiment
Describe this device in detail below in conjunction with accompanying drawing:
Referring to Fig. 1, the laser generator 1 of this device and parallel light beam expander 2 are provided with in the optical channel of cylinder middle part one side, and laser generator 1 sends light, produce collimated light beam by parallel light beam expander 2.The directional light that produces shine be arranged at cylinder the middle part with cross section incident illumination and cylinder all on the circular glass plate 6 at angle at 45 °, reflect on circular glass plate surface, the light of reflection arrives on the half anti-lens 5 of cylinder bottom, at half anti-lens surface, part luminous reflectance goes back, part light transmissive arrives on the soft light reflecting membrane 4 of bottom of cylinder, light reflects again, thereby transillumination and reflected light have just produced certain optical path difference, and two-beam is received by photoelectric sensing apparatus on the cylinder top, two-beam interferes, and forms interference fringe.Be positioned at soft light reflecting membrane 4 belows of bottom of cylinder with reeded rubber standoff 3, be connected with cylinder, the degree of tightness knob can regulate tubular structure with the distance of reeded rubber standoff, and then regulate the tightness degree that soft light reflecting membrane contacts with arm.When people's hands was placed on the rubber standoff 3, the beating of pulse makes was with reeded rubber standoff 3 and soft light reflecting membrane 4 that deformation occur, and cause the optical path difference of two-beam to change, thereby interference fringe also changes.In order to form stable interference fringe, be connected with external knob in a side of half anti-lens, half anti-lens are installed in rotation in the cylinder, change optical path difference thereby can rotate the angle that external knob 8 changes half anti-lens.The difference of beat pulse will form different interference fringes, the ccd sensor 7 at top is converted into the signal of telecommunication with the interference fringe optical signal, and give external single-chip microcomputer 9 with electrical signal transfer, 9 pairs of signals of giving of single-chip microcomputer are processed, and to data analysis, obtain frequency and the strength information of people's beat pulse.By the analysis to pulse frequency and intensity, can judge people's health status.
In this device, ccd sensor can adopt ICX625AQA, and single-chip microcomputer can be used Philip 93 series monolithics.
Claims (3)
1. device that utilizes optical interferometry to detect fluctuating signal, it is characterized in that: described device comprises laser generator, parallel light beam expander, soft light reflecting membrane, half anti-lens, glass plate and the ccd sensor that is arranged in the cylinder, and passes through the external single-chip microcomputer of control signal wire with ccd sensor;
Described laser generator is arranged in the optical channel of cylinder middle part one side, the place ahead of laser generator arranges parallel light beam expander in optical channel, the incident illumination that laser generator sends forms collimated light beam behind parallel light beam expander, at the cylinder middle part glass plate is installed, the cross section angle at 45 ° of itself and cylinder, the light part of collimated light beam is just penetrated down perpendicular to cross section after the glass plate reflection; The reflected light light path of glass plate is settled half anti-lens in cylinder, and the soft light reflecting membrane of positioned beneath at bottom of cylinder and half anti-lens arranges ccd sensor at the top of cylinder.
2. the device that utilizes optical interferometry to detect fluctuating signal according to claim 1, it is characterized in that: other is provided with a rubber standoff, centre, support top is that the groove of patient's wrist is laid in a confession, described rubber standoff is positioned at the below of described soft light reflecting membrane can stablize patient's wrist, support is connected with cylinder, between regulate by the degree of tightness knob.
3. the device that utilizes optical interferometry to detect fluctuating signal according to claim 1, it is characterized in that: the side at half anti-lens is connected with external knob, and half anti-lens are installed in rotation in the cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210446221.2A CN102894965B (en) | 2012-11-09 | 2012-11-09 | Device for detecting pulse signals by light interference method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210446221.2A CN102894965B (en) | 2012-11-09 | 2012-11-09 | Device for detecting pulse signals by light interference method |
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| CN102894965A true CN102894965A (en) | 2013-01-30 |
| CN102894965B CN102894965B (en) | 2015-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210446221.2A Expired - Fee Related CN102894965B (en) | 2012-11-09 | 2012-11-09 | Device for detecting pulse signals by light interference method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103479332A (en) * | 2013-09-03 | 2014-01-01 | 河海大学 | Internal arteriovenous fistula pulse test system |
| CN107468222A (en) * | 2017-09-15 | 2017-12-15 | 王庆亚 | High-precision fast-response dynamic 3 D pulse detector |
| CN113296137A (en) * | 2020-02-24 | 2021-08-24 | 香港理工大学深圳研究院 | Interferometric deformation monitoring method and device and receiver |
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| EP0348224A1 (en) * | 1988-06-24 | 1989-12-27 | Colin Corporation | Pressure-pulse-wave detecting apparatus |
| KR20110022132A (en) * | 2009-08-27 | 2011-03-07 | 한국전기연구원 | Pulse wave measuring apparatus using laser speckle image and pulse wave measuring method using this apparatus |
| WO2011051903A1 (en) * | 2009-10-29 | 2011-05-05 | Ecole Polytechnique Federale De Lausanne (Epfl) | Imaging based interferometric pressure sensor |
| CN101666630B (en) * | 2009-10-30 | 2011-06-22 | 哈尔滨工业大学深圳研究生院 | Method and device for detecting precision wafer based on parallel optical flat splitting polarized beam and phase-shifting interferometry |
| US20110178415A1 (en) * | 2010-01-19 | 2011-07-21 | Donna Baldwin | Continuous, non-invasive, optical blood pressure monitoring system |
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2012
- 2012-11-09 CN CN201210446221.2A patent/CN102894965B/en not_active Expired - Fee Related
Patent Citations (5)
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| EP0348224A1 (en) * | 1988-06-24 | 1989-12-27 | Colin Corporation | Pressure-pulse-wave detecting apparatus |
| KR20110022132A (en) * | 2009-08-27 | 2011-03-07 | 한국전기연구원 | Pulse wave measuring apparatus using laser speckle image and pulse wave measuring method using this apparatus |
| WO2011051903A1 (en) * | 2009-10-29 | 2011-05-05 | Ecole Polytechnique Federale De Lausanne (Epfl) | Imaging based interferometric pressure sensor |
| CN101666630B (en) * | 2009-10-30 | 2011-06-22 | 哈尔滨工业大学深圳研究生院 | Method and device for detecting precision wafer based on parallel optical flat splitting polarized beam and phase-shifting interferometry |
| US20110178415A1 (en) * | 2010-01-19 | 2011-07-21 | Donna Baldwin | Continuous, non-invasive, optical blood pressure monitoring system |
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| 禹延光 等: "多模激光自混合干涉实验与理论分析", 《光电子·激光》 * |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103479332A (en) * | 2013-09-03 | 2014-01-01 | 河海大学 | Internal arteriovenous fistula pulse test system |
| CN103479332B (en) * | 2013-09-03 | 2015-03-11 | 河海大学 | Internal arteriovenous fistula pulse test system |
| CN107468222A (en) * | 2017-09-15 | 2017-12-15 | 王庆亚 | High-precision fast-response dynamic 3 D pulse detector |
| CN113296137A (en) * | 2020-02-24 | 2021-08-24 | 香港理工大学深圳研究院 | Interferometric deformation monitoring method and device and receiver |
| CN113296137B (en) * | 2020-02-24 | 2023-11-17 | 香港理工大学深圳研究院 | Interference type deformation monitoring method, device and receiver |
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| CN102894965B (en) | 2015-05-20 |
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