CN206342462U - A kind of optical fiber vital sign supervising device based on Mach-Zahnder interference - Google Patents
A kind of optical fiber vital sign supervising device based on Mach-Zahnder interference Download PDFInfo
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- CN206342462U CN206342462U CN201621134537.8U CN201621134537U CN206342462U CN 206342462 U CN206342462 U CN 206342462U CN 201621134537 U CN201621134537 U CN 201621134537U CN 206342462 U CN206342462 U CN 206342462U
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Abstract
The utility model discloses a kind of optical fiber vital sign supervising device based on Mach-Zahnder interference, including：LASER Light Source, first n*n fiber couplers, first optical fiber, reference optical fiber, sensor fibre, 2nd n*n fiber couplers, second optical fiber, photodetector and vital sign are extracted and analysis module, two output ends of the first n*n fiber couplers connect the reference optical fiber and the sensor fibre input respectively, the output end of the reference optical fiber and the sensor fibre connects the input of the 2nd n*n fiber couplers respectively, the output end of the 2nd n*n fiber couplers connects the photodetector by the second optical fiber, the output end of the photodetector connects the vital sign and extracted and analysis module.By the above-mentioned means, the optical fiber vital sign supervising device described in the utility model based on Mach-Zahnder interference, have the advantages that simple in construction, sensitivity it is high, without cross-infection, real-time and low in energy consumption.
Description
Technical field
The utility model is related to vital sign monitoring technical field, it is more particularly to a kind of based on MZI based on Mach once
The optical fiber vital sign supervising device that Deccan is related to.
Background technology
Vital sign is monitored has extremely important meaning for the daily life of people, life and health.At present, to life entity
The monitoring of reference number can be divided into intrusive mood and non-intrusion type.Intrusive mood monitoring instrument be essentially all need detector or
Sensor is close to person under test's skin or heart, could obtain more accurately information.However, intrusive mood monitoring instrument is difficult to keep away
The problems such as exempting from cross-infection, electromagnetism interference, moreover, intrusive mood monitoring has considerable influence for the comfort level of person under test, it is to be measured
Person may produce a feeling fluctuation so that having influence on the accuracy of measurement.
Non-intruding monitoring has larger technical advantage, and skin or heart need not be adjacent to for person under test, you can carry out
Accurately vital sign monitoring in real time.Also some vital sign based on electronic sensor monitors product in the market,
It can be difficult in electromagnetic environment than using in the case of larger, such as nuclear magnetic resonance.In summary, conventional vital sign product
There is one or more of not enough：
First：Intrusive mood is monitored；
Second：It is sensitive to electromagnetic interference；
3rd：Easy cross-infection；
4th：Comfort level is poor.
Utility model content
The utility model is mainly solving the technical problems that provide a kind of optical fiber vital sign based on Mach-Zahnder interference
Supervising device, lifts the ability of electromagnetism interference, it is to avoid cross-infection, it is ensured that comfortableness and sensitivity.
In order to solve the above technical problems, the technical scheme that the utility model is used is：One kind is provided and was based on Mach once
The optical fiber vital sign supervising device that Deccan is related to, including：LASER Light Source, the first n*n fiber couplers, the first optical fiber, reference light
Fibre, sensor fibre, the 2nd n*n fiber couplers, the second optical fiber, photodetector and vital sign are extracted and analysis module, institute
The output port for stating LASER Light Source connects the input of the first n*n fiber couplers, the first n*n by the first optical fiber
Two output ends of fiber coupler connect the reference optical fiber and the sensor fibre input respectively, the reference optical fiber and
The output end of the sensor fibre connects the input of the 2nd n*n fiber couplers, the 2nd n*n fiber couplings respectively
The output end of device connects the photodetector by the second optical fiber, and the output end of the photodetector connects the life entity
Levy extraction and analysis module.
In one preferred embodiment of the utility model, the vital sign extract with analysis module include intelligent terminal and
The high in the clouds of network communication therewith, the output end of the photodetector be provided with wireless communication port corresponding with intelligent terminal or
Person's wire communication port.
In one preferred embodiment of the utility model, the intelligent terminal is smart mobile phone or computer.
In one preferred embodiment of the utility model, first optical fiber and the second optical fiber are respectively any type light
It is fine.
In one preferred embodiment of the utility model, the LASER Light Source is that the Single wavelength of continuous light or pulsed light swashs
Light device, including Distributed Feedback Laser and VCSEL lasers, while the wavelength that LASER Light Source is sent is not limited, cover all wave bands.
In one preferred embodiment of the utility model, the reference optical fiber and the sensor fibre are respectively any light
Fibre, and length do not limit.
In one preferred embodiment of the utility model, the optical fiber vital sign monitoring dress based on Mach-Zahnder interference
It is the full light vital sign sensor-based system based on MZI principles to put.
In one preferred embodiment of the utility model, the first n*n fiber couplers are 1*2 fiber couplers, institute
The 2nd n*n fiber couplers are stated for 2*1 fiber couplers.
The beneficial effects of the utility model are：A kind of optical fiber life based on Mach-Zahnder interference that the utility model is pointed out
Sign supervising device, with simple in construction, sensitivity it is high, without cross-infection, real-time, low in energy consumption, distributed remote monitoring,
The advantages of electromagnetism interference, it can be used in occasions such as family, home for destitute, hospitals, the perturbations of MZI to external world are very sensitive, can be with
The vital sign parameter signals such as the very sensitive breathing for capturing human body, heartbeat, photodetector, which is collected, carries vital sign information
Optical signal and carry out opto-electronic conversion, further by vital sign extract and analysis module obtain final life entity reference
Breath, these information can carry out big data analysis by permanent storage beyond the clouds.
Brief description of the drawings
, below will be to needed for embodiment description in order to illustrate more clearly of the technical scheme in the utility model embodiment
The accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present utility model
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings
Other accompanying drawings are obtained, wherein：
Fig. 1 is a kind of preferred embodiment of optical fiber vital sign supervising device one based on Mach-Zahnder interference of the utility model
Structural representation；
Fig. 2 is a kind of optical fiber vital sign supervising device based on Mach-Zahnder interference of the utility model in no person under test
In the case of signal graph；
Fig. 3 is that a kind of optical fiber vital sign supervising device based on Mach-Zahnder interference of the utility model is dynamic in person under test's body
In the case of signal graph；
Fig. 4 is that a kind of optical fiber vital sign supervising device based on Mach-Zahnder interference of the utility model is breathed in person under test
In the case of signal graph；
Fig. 5 is that a kind of optical fiber vital sign supervising device based on Mach-Zahnder interference of the utility model is holded in person under test
Heartbeat signal figure in the case of breathing.
Embodiment
The technical scheme in the utility model embodiment will be clearly and completely described below, it is clear that described
Embodiment is only a part of embodiment of the present utility model, rather than whole embodiments.Based on the implementation in the utility model
Example, all other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made is belonged to
The scope of the utility model protection.
Fig. 1 to Fig. 5 is referred to, the utility model embodiment includes：
A kind of optical fiber vital sign supervising device based on Mach-Zahnder interference, including：LASER Light Source 1, the first n*n optical fiber
Coupler 2, the first optical fiber 9, reference optical fiber 3, sensor fibre 4, the 2nd n*n fiber couplers 5, the second optical fiber 6, photodetector
7 and vital sign extract with analysis module 8, the output port of the LASER Light Source 1 connects the first n* by the first optical fiber 9
The input of n fiber couplers 2, two output ends of the first n*n fiber couplers 2 connect the reference optical fiber 3 respectively
With the input of sensor fibre 4, the output end of the reference optical fiber 3 and the sensor fibre 4 connects the 2nd n*n respectively
The input of fiber coupler 5, the output end of the 2nd n*n fiber couplers 5 connects the photoelectricity by the second optical fiber 6 and visited
Device 7 is surveyed, the output end of the photodetector 7 connects the vital sign and extracted and analysis module 8.Light is contactless entirely sets
Meter, simple in construction, electromagnetism interference performance is good, can be used in occasions such as family, home for destitute, hospitals.
Further, the first n*n fiber couplers use 1*2 fiber couplers, the 2nd n*n fiber couplers
Using 2*1 fiber couplers.
The vital sign is extracted includes intelligent terminal and the therewith high in the clouds of network communication, the photoelectricity with analysis module 8
The output end of detector 7 is provided with wireless communication port corresponding with intelligent terminal or wire communication port, and the intelligence is eventually
Hold as smart mobile phone or computer.The optical fiber vital sign supervising device based on Mach-Zahnder interference is to be based on Mach Zeng De
The full light vital sign sensor-based system of your interferometer MZI principles, the perturbations of MZI to external world are very sensitive, can be with very sensitive
The vital sign parameter signals such as breathing, the heartbeat of human body are captured, photodetector 7 collects the optical signal with vital sign information simultaneously
Opto-electronic conversion is carried out, is further extracted by vital sign and analysis module 8 obtains final vital sign information, these information
Big data analysis can be carried out by permanent storage beyond the clouds.
The optical fiber 6 of first optical fiber 9 and second is respectively any type optical fiber, the reference optical fiber 3 and the sense light
Fibre 4 is respectively any optical fiber, and wavelength do not limit.The LASER Light Source 1 is the Single wavelength laser of continuous light or pulsed light
Device, including Distributed Feedback Laser, VCSEL lasers etc., while the wavelength that LASER Light Source is sent is not limited, cover all wave bands, be applicable
Property is strong.
The vital sign is extracted to be extracted and parser with analysis module 8 comprising vital sign, for extracting life entity
Reference number, the extraction vital sign parameter signals include body dynamic, heart rate, heart sound, breathing and blood pressure etc..The full light of non-intrusion type
MZI life physical sign monitoring devices, the perturbation for causing environment is moved using heartbeat, breathing, body, influences MZI sensor fibre and reference
The phase difference of optical fiber, so as to cause output intensity to change.Assuming that LASER Light Source intensity is I0, reference optical fiber and sensor fibre
Input light intensity be respectively I1And I2, the length of reference optical fiber and sensor fibre is respectively L1And L2, reference optical fiber and sensor fibre
Accumulated phase be respectivelyWithPhase difference isThe effective refractive index of reference optical fiber and sensor fibre is respectively wavelength
neff1And neff2, wavelength is λ, and the light intensity that photodetector is received is IPD, do not consider fibre loss, then
The perturbations such as the body of human body is dynamic, breathing, heartbeat can influence the effective refractive index and length of optical fiber, and influence phase difference with
IPD.Therefore, extracted according to the light intensity received further according to vital sign and parser, it is possible to obtain vital sign parameter signals.
In summary, a kind of optical fiber vital sign supervising device based on Mach-Zahnder interference that the utility model is pointed out,
The utility model proposes full light non-intrusion type life physical sign monitoring device based on MZI and method, can effectively overcome with
Upper deficiency, is monitored using all -fiber MZI vital signs for carrying out human body, fully achieves non-intruding monitor, possess anti-electricity
Magnetic disturbance, without cross-infection, good comfortableness and high sensitivity the advantages of.
Embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited, it is every
The equivalent structure or equivalent flow conversion made using the utility model description, or directly or indirectly it is used in other phases
The technical field of pass, is similarly included in scope of patent protection of the present utility model.
Claims (8)
1. a kind of optical fiber vital sign supervising device based on Mach-Zahnder interference, it is characterised in that including：LASER Light Source,
One n*n fiber couplers, the first optical fiber, reference optical fiber, sensor fibre, the 2nd n*n fiber couplers, the second optical fiber, photoelectricity are visited
Survey device and vital sign is extracted and analysis module, the output port of the LASER Light Source connects the first n* by the first optical fiber
The input of n fiber couplers, two output ends of the first n*n fiber couplers connect the reference optical fiber and institute respectively
State sensor fibre input, the output end of the reference optical fiber and the sensor fibre connects the 2nd n*n optical fiber couplings respectively
The input of clutch, the output end of the 2nd n*n fiber couplers connects the photodetector by the second optical fiber, described
The output end of photodetector connects the vital sign and extracted and analysis module.
2. the optical fiber vital sign supervising device according to claim 1 based on Mach-Zahnder interference, it is characterised in that institute
Stating vital sign and extracting includes intelligent terminal and the therewith high in the clouds of network communication, the output of the photodetector with analysis module
End is provided with wireless communication port corresponding with intelligent terminal or wire communication port.
3. the optical fiber vital sign supervising device according to claim 2 based on Mach-Zahnder interference, it is characterised in that institute
Intelligent terminal is stated for smart mobile phone or computer.
4. the optical fiber vital sign supervising device according to claim 1 based on Mach-Zahnder interference, it is characterised in that institute
It is respectively any type optical fiber to state the first optical fiber and the second optical fiber.
5. the optical fiber vital sign supervising device according to claim 1 based on Mach-Zahnder interference, it is characterised in that institute
The single wavelength laser that LASER Light Source is continuous light or pulsed light, including Distributed Feedback Laser and VCSEL lasers are stated, is swashed simultaneously
The wavelength that radiant is sent is not limited, and covers all wave bands.
6. the optical fiber vital sign supervising device according to claim 1 based on Mach-Zahnder interference, it is characterised in that institute
State reference optical fiber and the sensor fibre is respectively any optical fiber, and length is not limited.
7. the optical fiber vital sign supervising device according to claim 1 based on Mach-Zahnder interference, it is characterised in that institute
It is the full light vital sign sensor-based system based on MZI principles to state the optical fiber vital sign supervising device based on Mach-Zahnder interference.
8. the optical fiber vital sign supervising device according to claim 1 based on Mach-Zahnder interference, it is characterised in that institute
The first n*n fiber couplers are stated for 1*2 fiber couplers, the 2nd n*n fiber couplers are 2*1 fiber couplers.
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| CN201621134537.8U CN206342462U (en) | 2016-10-19 | 2016-10-19 | A kind of optical fiber vital sign supervising device based on Mach-Zahnder interference |
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| CN201621134537.8U CN206342462U (en) | 2016-10-19 | 2016-10-19 | A kind of optical fiber vital sign supervising device based on Mach-Zahnder interference |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106510620A (en) * | 2016-10-19 | 2017-03-22 | 苏州安莱光电科技有限公司 | Full-optical non-contact vital sign monitoring device |
| CN107595265A (en) * | 2017-10-23 | 2018-01-19 | 京工高科成都光电有限公司 | A kind of sleep health monitoring systems based on fibre coherence technique |
| CN108451506A (en) * | 2018-04-20 | 2018-08-28 | 苏州安莱光电科技有限公司 | The contactless snoring of one kind and sleep apnea monitoring device |
| CN109602400A (en) * | 2019-01-25 | 2019-04-12 | 泉州师范学院 | Vital sign parameter monitoring device and method based on four cone fibre optic interferometers |
| CN110013244A (en) * | 2019-04-18 | 2019-07-16 | 江西益康医疗器械集团有限公司 | Medical cardiac bioelectricity monitoring device and its monitoring method |
| CN113295308A (en) * | 2021-05-21 | 2021-08-24 | 苏州安莱光电科技有限公司 | Nonlinear static working point adjusting device and method |
| WO2022021614A1 (en) * | 2020-07-29 | 2022-02-03 | 泉州师范学院 | Contactless intelligent monitor and detection method therefor |
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2016
- 2016-10-19 CN CN201621134537.8U patent/CN206342462U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106510620A (en) * | 2016-10-19 | 2017-03-22 | 苏州安莱光电科技有限公司 | Full-optical non-contact vital sign monitoring device |
| CN107595265A (en) * | 2017-10-23 | 2018-01-19 | 京工高科成都光电有限公司 | A kind of sleep health monitoring systems based on fibre coherence technique |
| CN108451506A (en) * | 2018-04-20 | 2018-08-28 | 苏州安莱光电科技有限公司 | The contactless snoring of one kind and sleep apnea monitoring device |
| CN109602400A (en) * | 2019-01-25 | 2019-04-12 | 泉州师范学院 | Vital sign parameter monitoring device and method based on four cone fibre optic interferometers |
| CN110013244A (en) * | 2019-04-18 | 2019-07-16 | 江西益康医疗器械集团有限公司 | Medical cardiac bioelectricity monitoring device and its monitoring method |
| WO2022021614A1 (en) * | 2020-07-29 | 2022-02-03 | 泉州师范学院 | Contactless intelligent monitor and detection method therefor |
| CN113295308A (en) * | 2021-05-21 | 2021-08-24 | 苏州安莱光电科技有限公司 | Nonlinear static working point adjusting device and method |
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