CN107595265A - A kind of sleep health monitoring systems based on fibre coherence technique - Google Patents
A kind of sleep health monitoring systems based on fibre coherence technique Download PDFInfo
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Abstract
The invention discloses a kind of sleep health monitoring systems based on fibre coherence technique, it is related to intelligent health monitoring technical field.A kind of sleep health monitoring systems based on fibre coherence technique of the present invention, it is characterized in that, including the flexible structure with human contact, and narrow linewidth semiconductor laser, fiber optic interferometric system, the demodulator of PM signal PM being sequentially connected, the fiber optic interferometric system are connected with flexible structure.Fiber optic interferometric system includes 2 × 2 couplers, 3 × 3 couplers, two optical fiber, two speculums and three photodetectors, and fiber optic interferometric system architecture connected mode can use Michelson formula or Mach wise man's German-style.The present invention obtains external disturbance information by the optical signal of the tunnel out of phase of collection analysis three, three road optical signals can obtain the information such as pressure, breathing and the heartbeat of sleep quality process after demodulator of PM signal PM analyzes and processes, and have the characteristics of high sensitivity, electromagnetism interference, various, practical gathered data.
Description
Technical field
The present invention relates to intelligent health monitoring technical field, more particularly to a kind of sleep health based on optical fiber sensing technology
Monitoring system.
Background technology
The appearance of wearable intelligent health monitoring device, setting for various real-time monitoring health status at any time is provided for the mankind
Standby, the way of realization of these wearable monitoring instruments includes watch, waistband, the helmet, shoe-pad, or even foot chain etc..But actually use
During, always allow people inconvenient in body worn set of device.And the mankind have about 1/3rd time in sleep shape
State, it is the recumbency on mattress, if health monitoring device can be installed on mattress, it is possible to which not dressing monitoring instrument can also be real
Now to the monitoring of health.Carrying out health monitoring in bed can also be monitored to the sleep quality of people, understand individual's
Sleep quality, while the elderly or patient unsmooth breath or die by visitation of God in sleep are prevented, it is also possible to prevent the elderly or disease
People falls from the bed.
It is usually that sensor is directly installed on mattress to carry out dormant monitoring in bed, makes so-called intelligence
Mattress.People's body in sleep pushes down sensor, thus detects the situation of body and sleep.Biography used in this kind of mattress in early days
Sensor is based on the pressure sensor of piezoelectric type, but piezoelectric transducer hardness itself is high, is put at the position of mattress and human contact
Putting hard foreign matter extremely influences the comfort level that product uses.Piezoelectric transducer size is small, monitoring range very little, thus needs to spread
If multiple sensors could realize monitoring in the range of a mattress.In addition, the sensitivity of piezoelectric transducer is not high, it is impossible to very
Good detects the breathing even situation of heartbeat.
With the progress of optical fiber sensing technology, start to have occurred fibre optical sensor being applied to mattress progress sleep monitor
Intelligent mattress.Fibre optical sensor has the advantages of many notable compared with traditional piezoelectric transducer, can preferably be applied to sleep
In dormancy health monitoring.Optical fiber delicate itself, human body is completely imperceptible in mattress；Optical fiber can be grown very much, energy
It is enough to be laid on a large scale in mattress, the mattress monitoring of large area is got up with an optical fiber can；The spirit of fibre optical sensor
Sensitivity is also very high, and the physical parameter that can be monitored is more abundant, situations such as can not only monitoring pressure, turn, breathe, even
Heartbeat can also be monitored.
Number of patent application is that CN201420404312.4 Chinese invention patent discloses a kind of laying optical fiber and fax sense
The mattress construction of device, bond strength modulation fiber sensor, it is possible to achieve measurement of the human body to mattress pressure.The technical scheme
Solve the problems, such as that piezo-electric pressure sensor sensitive zones are small, foreign body sensation is strong, but intensity modulation optical fiber sensor sensitivity is low,
The physical quantity that can be monitored is few.Chinese utility model patent specification CN201320165470.4 discloses one kind and is based on fiber grating
Human body lie down pressure distribution measurement device, the device with seven LPFGs come monitor human body lie down when pressure divide
Cloth situation.The technical scheme is monitored using fiber-optic grating sensor.As a kind of wavelength modulation type optical fiber, fiber grating passes
The sensitivity of sensor increases compared with intensity modulation optical fiber sensor, but its signal demodulating system and imperfection, price
Expensive and dynamic range is limited.
Optical-fiber intelligent mattresses all so far is all based on wavelength modulation type and the Fibre Optical Sensor of intensity modulation type is surveyed
Principle is measured, the application proposes a kind of sleep health monitoring systems based on fibre coherence technique, and skill is sensed using phase modulation-type
The advantages of art high sensitivity, in addition to it can obtain human pressure, breathing and the heartbeat letter of sleep quality process can also be obtained
Breath, the physical parameter of monitoring are more.
The content of the invention
It is an object of the invention to：For prior art detection sensitivity it is relatively low the problem of, the present invention provide one kind be based on
The sleep health monitoring systems of fibre coherence technique.
The present invention specifically uses following technical scheme to achieve these goals：A kind of sleep based on fibre coherence technique
Health monitoring systems, including the flexible structure with human contact, and the narrow linewidth semiconductor laser, the optical fiber that are sequentially connected are done
System, demodulator of PM signal PM are related to, fiber optic interferometric system is connected with flexible structure.
Further, fiber optic interferometric system includes 2 × 2 couplers, 3 × 3 couplers, optical fiber A, optical fiber B, speculum A, anti-
Penetrate mirror B, photodetector A, photodetector B and photodetector C；2 × 2 couplers be provided with port A, port B, port C,
Tetra- ports of port D, 3 × 3 couplers are provided with six port E, port F, port G, port H, port I, port J ports；It is narrow
Line width semiconductor laser is connected as light source with the port A of 2 × 2 couplers, the port C and 3 × 3 couplers of 2 × 2 couplers
Port E connections, the port I and port H of 3 × 3 couplers be connected by optical fiber A, optical fiber B with speculum A, speculum B respectively,
The port B of 2 × 2 couplers, the port F of 3 × 3 couplers and 3 × 3 couplers port G pass through photodetector A, light respectively
Electric explorer B and photodetector C are connected with demodulator of PM signal PM.Optical fiber A and optical fiber B is respectively the reference arm of fiber optic interferometric system
And measuring arm, the optical fiber as measuring arm are embedded in flexible structure, the optical fiber as measuring arm can be embedded in flexible structure
In, it can also be arranged on outside flexible structure.
The light path of system is：The light source of narrow linewidth semiconductor laser transmitting enters 2 × 2 by the port A of 2 × 2 couplers
The light splitting of this beam light is light path C and light path D two-way by coupler, 2 × 2 couplers；Light path C in above-mentioned two-way light is by 2 × 2 couplings
The port C outputs of device simultaneously enter 3 × 3 couplers via the port E of 3 × 3 couplers, and light path C light splitting is light by 3 × 3 couplers
Road C-H, light path C-I and the tunnels of light path C-J tri-；Light path C-H in the light of above-mentioned three road is exported and entered by the port H of 3 × 3 couplers
Optical fiber B, light path C-H are reflected back port H in optical fiber B ends by speculum B, and enter 3 × 3 couplers via port H, and above-mentioned three
Lu Guangzhong light path C-I is exported by the port I of 3 × 3 couplers and is entered optical fiber A, and light path C-I is in optical fiber A ends by speculum A
Port I is reflected back, and enters 3 × 3 couplers via port I, light path C-H and light path C-I through reflection are in 3 × 3 couplers
Interfere and be divided as light path C-H-E, light path C-H-F and light path C-H-G；
Light path C-H-E exports via the port E of 3 × 3 couplers, enters 2 × 2 couplings by the port C of 2 × 2 couplers
Device, the port B outputs finally by 2 × 2 couplers are light path C-H-E-B, and light path C-H-E-B is received by photodetector A will
Optical signal is converted to electric signal in output to demodulator of PM signal PM；
Light path C-H-F is exported to photodetector B, by light after photodetector B receptions via the port F of 3 × 3 couplers
Signal is converted to electric signal and exported again to demodulator of PM signal PM；
Light path C-H-F is exported to photodetector C, by light after photodetector C receptions via the port G of 3 × 3 couplers
Signal is converted to electric signal and exported again to demodulator of PM signal PM.
Demodulator of PM signal PM demodulates phase difference for the road light of 120 Du tri- (light path C-H-E, light path C-H-F and light path C-H-F)
Go out primary signal and analyze the disturbing signal being applied on optical fiber A or optical fiber B, and then handle and obtain sleep quality process
The information such as pressure, breathing and heartbeat.
Further, fiber optic interferometric system includes 2 × 2 couplers, 3 × 3 couplers, optical fiber A, optical fiber B, photodetector
A, photodetector B and photodetector C, 2 × 2 couplers are provided with tetra- port A, port B, port C, port D ports, and 3
× 3 couplers are provided with six port E, port F, port G, port H, port I, port J ports；Narrow linewidth semiconductor laser
Be connected as light source with the port A of 2 × 2 couplers, the port D and port C of 2 × 2 couplers respectively by optical fiber A, optical fiber B with
The port F of 3 × 3 couplers, port E connections, port H, port I and the port J of 3 × 3 couplers pass through photodetector respectively
A, photodetector B, photodetector C are connected with demodulator of PM signal PM.Optical fiber A and optical fiber B is respectively the ginseng of fiber optic interferometric system
Arm and measuring arm are examined, the optical fiber as measuring arm is embedded in flexible structure, and the optical fiber as reference arm can be embedded in flexibility
In structure, it can also be arranged on outside flexible structure.
System light path is：The light source of narrow linewidth semiconductor laser transmitting enters 2 × 2 couplings by the port A of 2 × 2 couplers
The light splitting of this beam light is light path C and light path D two-way by clutch, 2 × 2 couplers；Light path C in above-mentioned two-way light is by 2 × 2 couplers
Port C export and enter optical fiber B, the light path C in optical fiber B enters 3 × 3 couplers via the port E of 3 × 3 couplers again, on
State the light path D in two-way light to be exported by the port D of 2 × 2 couplers and enter optical fiber A, the light path D in optical fiber A is again via 3 × 3
The port F of coupler enters 3 × 3 couplers；Light path C and light path D is interfered in 3 × 3 couplers and by 3 × 3 coupler
Branch is light path C-H, light path C-I and light path C-J；
Light path C-H is exported to photodetector A, photodetector A via the port H of 3 × 3 couplers believes light after receiving
Number be converted to electric signal exports to demodulator of PM signal PM again；
Light path C-I is exported to photodetector B, photodetector B via the port I of 3 × 3 couplers believes light after receiving
Number be converted to electric signal exports to demodulator of PM signal PM again；
Light path C-J is exported to photodetector C, photodetector C via the port J of 3 × 3 couplers believes light after receiving
Number be converted to electric signal exports to demodulator of PM signal PM again.
Demodulator of PM signal PM demodulates phase difference for the road light of 120 Du tri- (light path C-H, light path C-I and light path C-J) original
Signal simultaneously analyzes the disturbing signal being applied on optical fiber A or optical fiber B, so handle obtain sleep quality process pressure,
The information such as breathing and heartbeat.
Further, optical fiber A and optical fiber B can be single-mode fiber or polarization maintaining optical fibre, if optical fiber A and optical fiber B is single
Mode fiber, then 2 × 2 couplers and 3 × 3 couplers are monomode coupler；If optical fiber A and optical fiber B is polarization maintaining optical fibre, 2 × 2 couplings
Clutch and 3 × 3 couplers are polarization-maintaining coupler；The splitting ratio of 2 × 2 couplers is 50:The splitting ratio of 50,3 × 3 couplers is
33：33：33.
Further, narrow linewidth semiconductor laser is DFB laser diodes；Photodetector A, photodetector B
It is PIN photoelectric detector with photodetector C.
Beneficial effects of the present invention are as follows：
1st, of the invention sleep health monitoring systems are designed based on fibre coherence technique, by the tunnel of collection analysis three not
The optical signal of same-phase obtains external disturbance information, and the principal element for influenceing to propagate phase of light wave in a fiber is temperature
And extraneous stress, therefore this sleep health monitoring systems can carry out the measurement of temperature and pressure, and high sensitivity, anti-electromagnetism are done
Disturb.Three road optical signals can obtain the letter such as pressure, breathing and heartbeat of sleep quality process after demodulator of PM signal PM analyzes and processes
Breath, it is practical.
2nd, sleep health monitoring systems of the invention form fibre optic interferometer using 3 × 3 couplers, can use mikey
Er Xunshi structures, Mach-wise German-style structure can also be used, have that measurement dynamic range is big, the demodulation of high sensitivity, signal is easy
The advantages that, it can effectively measure the information such as pressure, vibration.
Brief description of the drawings
Fig. 1 is the schematic diagram of the embodiment of the present invention 1；
Fig. 2 is the schematic diagram of the embodiment of the present invention 2；
Fig. 3 is the schematic diagram of the embodiment of the present invention 3；
Fig. 4 is the schematic diagram of the embodiment of the present invention 4；
Reference：1- narrow linewidth semiconductor lasers；2- demodulator of PM signal PMs；The coupler of 3-2 × 2；The coupler of 4-3 × 3；
5- optical fiber A；6- optical fiber B；7- speculums A；8- speculums B；10- flexible structures；3.1- ports A；3.2- ports B；3.3- port
C；3.4- ports D；4.1- ports E；4.2- ports F；4.3- ports G；4.4- ports H；4.5- ports I；4.6- ports J；9.1-
Photodetector A；9.2- photodetectors B；9.3- photodetectors C.
Embodiment
In order to which those skilled in the art are better understood from the present invention, below in conjunction with the accompanying drawings with following examples to the present invention
It is described in further detail.
Embodiment 1
As shown in figure 1, a kind of sleep health monitoring systems based on fibre coherence technique, including the flexibility with human contact
Structure 10, and narrow linewidth semiconductor laser 1, fiber optic interferometric system, the demodulator of PM signal PM 2 being sequentially connected, fiber optic interferometric system
System is connected with flexible structure 10.
Fiber optic interferometric system includes 2 × 2 couplers 3,3 × 3 couplers 4, optical fiber A5, optical fiber B6, speculum A7, speculum
B8, photodetector A9.1, photodetector B9.2 and photodetector C9.3；2 × 2 couplers 3 are provided with port A3.1, end
Tetra- mouthful B3.2, port C3.3, port D3.4 ports, 3 × 3 couplers 4 be provided with port E4.1, port F4.2, port G4.3,
Six port H4.4, port I4.5, port J4.6 ports；Narrow linewidth semiconductor laser 1 is as light source and 2 × 2 couplers 3
Port A3.1 connections, the port C3.3 of 2 × 2 couplers 3 are connected with the port E4.1 of 3 × 3 couplers 4, the end of 3 × 3 couplers 4
Mouth I4.5 and port H4.4 is connected by optical fiber A5, optical fiber B6 with speculum A7, speculum B8 respectively, the end of 2 × 2 couplers 3
Mouth B3.2, the port F4.2 of 3 × 3 couplers 4 and the port G4.3 of 3 × 3 couplers 4 pass through photodetector A9.1, light respectively
Electric explorer B9.2 and photodetector C9.3 are connected with demodulator of PM signal PM 2.Optical fiber A5 is embedded in flexible structure as measuring arm
In 10, optical fiber B6 is arranged on outside flexible structure 10 as reference arm, and optical fiber A5 and optical fiber B6 length are dry to ensure close to identical
The optical path difference for relating to system is less than the coherence length of light source.
The present embodiment operation principle is：Narrow linewidth semiconductor laser 1 launch light source by 2 × 2 couplers 3 port
It is light path C and light path D two-way that A3.1, which enters the coupler 3 of 2 × 2 coupler 3,2 × 2 by the light splitting of this beam light,；In above-mentioned two-way light
Light path C is exported by the port C3.3 of 2 × 2 couplers 3 and is entered 3 × 3 couplers 4,3 via the port E4.1 of 3 × 3 couplers 4
Light path C light splitting is light path C-H, light path C-I and the tunnels of light path C-J tri- by × 3 couplers 4；Light path C-H in the light of above-mentioned three road is by 3
The port H4.4 of × 3 couplers 4 is exported and is entered optical fiber B6, and light path C-H is reflected back port in optical fiber B6 ends by speculum A8
H4.4, and enter 3 × 3 couplers 4 via port H4.4, the light path C-I in the light of above-mentioned three road by 3 × 3 couplers 4 port
I4.5 is exported and is entered optical fiber A5, and light path C-I is reflected back port I4.5 in optical fiber A5 ends by speculum A7, and via port
I4.5 enters 3 × 3 couplers 4, and light path C-H and light path C-I through reflection are interfered and are divided as light in 3 × 3 couplers 4
Road C-H-E, light path C-H-F and light path C-H-G；
Light path C-H-E exports via the port E4.1 of 3 × 3 couplers 4, enters 2 by the port C3.3 of 2 × 2 couplers 3
× 2 couplers 3, it is light path C-H-E-B finally by the port B3.2 outputs of 2 × 2 couplers 3, light path C-H-E-B is visited by photoelectricity
Survey device A9.1 receptions and convert optical signals to electric signal in output to demodulator of PM signal PM 2；
Light path C-H-F is exported to photodetector B9.2, photodetector B9.2 via the port F4.2 of 3 × 3 couplers 4
Electric signal is converted optical signals to after reception to export again to demodulator of PM signal PM 2；
Light path C-H-F is exported to photodetector C9.3, photodetector C9.3 via the port G4.3 of 3 × 3 couplers 4
Electric signal is converted optical signals to after reception to export again to demodulator of PM signal PM 2.
Demodulator of PM signal PM 2 solves phase difference for the road light of 120 Du tri- (light path C-H-E, light path C-H-F and light path C-H-F)
Recall primary signal and analyze the disturbing signal being applied on optical fiber A5 or optical fiber B6, and then handle and obtain sleep quality mistake
The information such as pressure, breathing and the heartbeat of journey.
The present embodiment fiber optic interferometric system uses Michelson formula structure, has that measurement dynamic range is big, high sensitivity, letter
Number demodulation it is easy the advantages that, can effectively measure the information such as pressure, vibration..
Embodiment 2
A kind of sleep health monitoring systems based on fibre coherence technique, including the flexible structure 10 with human contact, with
And narrow linewidth semiconductor laser 1, fiber optic interferometric system, the demodulator of PM signal PM 2 being sequentially connected, fiber optic interferometric system are tied with flexible
Structure 10 is connected.
Fiber optic interferometric system includes 2 × 2 couplers 3,3 × 3 couplers 4, optical fiber A5, optical fiber B6, speculum A7, speculum
B8, photodetector A9.1, photodetector B9.2 and photodetector C9.3；2 × 2 couplers 3 are provided with port A3.1, end
Tetra- mouthful B3.2, port C3.3, port D3.4 ports, 3 × 3 couplers 4 be provided with port E4.1, port F4.2, port G4.3,
Six port H4.4, port I4.5, port J4.6 ports；Narrow linewidth semiconductor laser 1 is as light source and 2 × 2 couplers 3
Port A3.1 connections, the port C3.3 of 2 × 2 couplers 3 are connected with the port E4.1 of 3 × 3 couplers 4, the end of 3 × 3 couplers 4
Mouth I4.5 and port H4.4 is connected by optical fiber A5, optical fiber B6 with speculum A7, speculum B8 respectively, the end of 2 × 2 couplers 3
Mouth B3.2, the port F4.2 of 3 × 3 couplers 4 and the port G4.3 of 3 × 3 couplers 4 pass through photodetector A9.1, light respectively
Electric explorer B9.2 and photodetector C9.3 are connected with demodulator of PM signal PM 2.As the optical fiber A5 of measuring arm and as reference arm
Optical fiber B6 be embedded in flexible structure 10, optical fiber A5 and optical fiber B6 length are close to identical, to ensure the light path of interference system
Difference is less than the coherence length of light source.
The present embodiment operation principle is same as Example 1.
Embodiment 3
A kind of sleep health monitoring systems based on fibre coherence technique, including the flexible structure 10 with human contact, with
And narrow linewidth semiconductor laser 1, fiber optic interferometric system, the demodulator of PM signal PM 2 being sequentially connected, fiber optic interferometric system are tied with flexible
Structure 10 is connected.
Fiber optic interferometric system include 2 × 2 couplers 3,3 × 3 couplers 4, optical fiber A5, optical fiber B6, photodetector A9.1,
Photodetector B9.2 and photodetector C9.3,2 × 2 couplers 3 are provided with port A3.1, port B3.2, port C3.3, end
Tetra- ports of mouthful D3.4,3 × 3 couplers 4 be provided with port E4.1, port F4.2, port G4.3, port H4.4, port I4.5,
Six ports of port J4.6；Narrow linewidth semiconductor laser 1 is connected as light source with the port A3.1 of 2 × 2 couplers 3, and 2 × 2
The port D3.4 and port C3.3 of coupler 3 pass through the port F4.2 of optical fiber A5, optical fiber B6 and 3 × 3 couplers 4, port respectively
E4.1 connections, port H4.4, port I4.5 and the port J4.6 of 3 × 3 couplers 4 pass through photodetector A9.1, photoelectricity respectively
Detector B9.2, photodetector C9.3 are connected with demodulator of PM signal PM 2.Optical fiber A5 is embedded in flexible structure 10 as measuring arm
In, optical fiber B6 is arranged on outside flexible structure 10 as reference arm, and optical fiber A5 and optical fiber B6 length are close to identical, to ensure to interfere
The optical path difference of system is less than the coherence length of light source.
The present embodiment operation principle is：Narrow linewidth semiconductor laser 1 launch light source by 2 × 2 couplers 3 port
It is light path C and light path D two-way that A3.1, which enters the coupler 3 of 2 × 2 coupler 3,2 × 2 by the light splitting of this beam light,；In above-mentioned two-way light
Light path C is exported by the port C3.3 of 2 × 2 couplers 3 and is entered optical fiber B6, and the light path C in optical fiber B6 is again via 3 × 3 couplers 4
Port E4.1 enter 3 × 3 couplers 4, the light path D in above-mentioned two-way light is gone forward side by side by the port D3.4 outputs of 2 × 2 couplers 3
Enter optical fiber A5, the light path D in optical fiber A5 enters 3 × 3 couplers 4 via the port F4.2 of 3 × 3 couplers 4 again；Light path C and light
Road D is interfered in 3 × 3 couplers 4 and is light path C-H, light path C-I and light path C-J by the branch of 3 × 3 coupler 4；
Light path C-H is exported to photodetector A9.1, photodetector A9.1 via the port H4.4 of 3 × 3 couplers 4 and connect
Electric signal is converted optical signals to after receipts to export again to demodulator of PM signal PM 2；
Light path C-I is exported to photodetector B9.2, photodetector B9.2 via the port I4.5 of 3 × 3 couplers 4 and connect
Electric signal is converted optical signals to after receipts to export again to demodulator of PM signal PM 2；
Light path C-J is exported to photodetector C9.3, photodetector C9.3 via the port J4.6 of 3 × 3 couplers 4 and connect
Electric signal is converted optical signals to after receipts to export again to demodulator of PM signal PM 2.
Phase difference is that the road light of 120 Du tri- (light path C-H, light path C-I and light path C-J) demodulates original by demodulator of PM signal PM 2
Beginning signal simultaneously analyzes the disturbing signal being applied on optical fiber A5 or optical fiber B6, and then handles and obtain the pressure of sleep quality process
The information such as power, breathing and heartbeat.
The present embodiment fiber optic interferometric system uses Mach-wise German-style structure, have measurement dynamic range big, high sensitivity,
The advantages that signal demodulation is easy, can effectively measure the information such as pressure, vibration.
Embodiment 4
A kind of sleep health monitoring systems based on fibre coherence technique, including the flexible structure 10 with human contact, with
And narrow linewidth semiconductor laser 1, fiber optic interferometric system, the demodulator of PM signal PM 2 being sequentially connected, fiber optic interferometric system are tied with flexible
Structure 10 is connected.
Fiber optic interferometric system include 2 × 2 couplers 3,3 × 3 couplers 4, optical fiber A5, optical fiber B6, photodetector A9.1,
Photodetector B9.2 and photodetector C9.3,2 × 2 couplers 3 are provided with port A3.1, port B3.2, port C3.3, end
Tetra- ports of mouthful D3.4,3 × 3 couplers 4 be provided with port E4.1, port F4.2, port G4.3, port H4.4, port I4.5,
Six ports of port J4.6；Narrow linewidth semiconductor laser 1 is connected as light source with the port A3.1 of 2 × 2 couplers 3, and 2 × 2
The port D3.4 and port C3.3 of coupler 3 pass through the port F4.2 of optical fiber A5, optical fiber B6 and 3 × 3 couplers 4, port respectively
E4.1 connections, port H4.4, port I4.5 and the port J4.6 of 3 × 3 couplers 4 pass through photodetector A9.1, photoelectricity respectively
Detector B9.2, photodetector C9.3 are connected with demodulator of PM signal PM 2.Light as the optical fiber A5 of measuring arm and as reference arm
Fine B6 is embedded in flexible structure 10, and optical fiber A5 and optical fiber B6 length are close to identical, to ensure that the optical path difference of interference system is small
In the coherence length of light source.
The present embodiment operation principle is same as Example 3.
Embodiment 5
The present embodiment is further optimized on the basis of above example, is specifically：
Narrow linewidth semiconductor laser 1 is DFB laser diodes, photodetector A9.1, photodetector B9.2 and light
Electric explorer C9.3 is PIN photoelectric detector.
Embodiment 6
The present embodiment is further optimized on the basis of above example, is specifically：
Optical fiber A5 and optical fiber B6 is single-mode fiber, and 2 × 2 couplers 3 and 3 × 3 couplers 4 are monomode coupler, 2 × 2 couplings
The splitting ratio of clutch 3 is 50:The splitting ratio of 50,3 × 3 couplers 4 is 33：33：33.
Embodiment 7
The present embodiment is further optimized on the basis of above example, is specifically：
Optical fiber A5 and optical fiber B6 is polarization maintaining optical fibre, and 2 × 2 couplers 3 and 3 × 3 couplers 4 are polarization-maintaining coupler, 2 × 2 couplings
The splitting ratio of clutch 3 is 50:The splitting ratio of 50,3 × 3 couplers 4 is 33：33：33.
Described above, only presently preferred embodiments of the present invention is not intended to limit the invention, patent protection model of the invention
Enclose and be defined by claims, the equivalent structure change that every specification and accompanying drawing content with the present invention is made, similarly
It should include within the scope of the present invention.
Claims (8)
1. a kind of sleep health monitoring systems based on fibre coherence technique, it is characterised in that including the flexibility with human contact
Structure (10), and narrow linewidth semiconductor laser (1), fiber optic interferometric system, the demodulator of PM signal PM (2) being sequentially connected, it is described
Fiber optic interferometric system is connected with flexible structure (10).
A kind of 2. sleep health monitoring systems based on fibre coherence technique according to claim 1, it is characterised in that institute
Stating fiber optic interferometric system includes 2 × 2 couplers (3), 3 × 3 couplers (4), optical fiber A (5), optical fiber B (6), speculum A (7), anti-
Penetrate mirror B (8), photodetector A (9.1), photodetector B (9.2) and photodetector C (9.3)；2 × 2 coupler
(3) (3.4) four port A (3.1), port B (3.2), port C (3.3), port D ports, 3 × 3 coupler are provided with
(4) port E (4.1), port F (4.2), port G (4.3), port H (4.4), port I (4.5), port J (4.6) six are provided with
Individual port；The narrow linewidth semiconductor laser (1) is connected as light source with the port A (3.1) of 2 × 2 couplers (3), and described 2
The port C (3.3) of × 2 couplers (3) is connected with the port E (4.1) of 3 × 3 couplers (4), the end of 3 × 3 coupler (4)
Mouth I (4.5) and port H (4.4) are connected by optical fiber A (5), optical fiber B (6) with speculum A (7), speculum B (8) respectively, described
The port B (3.2) of 2 × 2 couplers (3), the port F (4.2) of 3 × 3 couplers (4) and 3 × 3 couplers (4) port G
(4.3) photodetector A (9.1), photodetector B (9.2) and photodetector C (9.3) and demodulator of PM signal PM are passed through respectively
(2) at least one in connection, the optical fiber A (5) and optical fiber B (6) is embedded in flexible structure (10).
A kind of 3. sleep health monitoring systems based on fibre coherence technique according to claim 1, it is characterised in that institute
Stating fiber optic interferometric system includes 2 × 2 couplers (3), 3 × 3 couplers (4), optical fiber A (5), optical fiber B (6), photodetector A
(9.1), photodetector B (9.2) and photodetector C (9.3), 2 × 2 coupler (3) are provided with port A (3.1), end
(3.4) four mouth B (3.2), port C (3.3), port D ports, 3 × 3 coupler (4) are provided with port E (4.1), port
(4.6) six F (4.2), port G (4.3), port H (4.4), port I (4.5), port J ports；The narrow linewidth semiconductor swashs
Light device (1) is connected as light source with the port A (3.1) of 2 × 2 couplers (3), the port D (3.4) of 2 × 2 coupler (3)
Connected respectively by port F (4.2), the port E (4.1) of optical fiber A (5), optical fiber B (6) and 3 × 3 couplers (4) with port C (3.3)
Connect, port H (4.4), port I (4.5) and the port J (4.6) of 3 × 3 coupler (4) pass through photodetector A respectively
(9.1), photodetector B (9.2), photodetector C (9.3) are connected with demodulator of PM signal PM (2), the optical fiber A (5) and optical fiber
At least one in B (6) is embedded in flexible structure (10).
4. a kind of sleep health monitoring systems based on fibre coherence technique according to Claims 2 or 3, its feature exist
In the narrow linewidth semiconductor laser (1) is DFB laser diodes.
5. a kind of sleep health monitoring systems based on fibre coherence technique according to Claims 2 or 3, its feature exist
In the optical fiber A (5) and optical fiber B (6) are single-mode fiber, and 2 × 2 coupler (3) and 3 × 3 couplers (4) are single mode coupling
Clutch.
6. a kind of sleep health monitoring systems based on fibre coherence technique according to Claims 2 or 3, its feature exist
In the optical fiber A (5) and optical fiber B (6) are polarization maintaining optical fibre, and 2 × 2 coupler (3) and 3 × 3 couplers (4) are polarization-maintaining coupling
Clutch.
7. a kind of sleep health monitoring systems based on fibre coherence technique according to Claims 2 or 3, its feature exist
In the splitting ratio of 2 × 2 coupler (3) is 50:50, the splitting ratio of 3 × 3 coupler (4) is 33：33：33.
8. a kind of sleep health monitoring systems based on fibre coherence technique according to Claims 2 or 3, its feature exist
In the photodetector A (9.1), photodetector B (9.2) and photodetector C (9.3) are PIN photoelectric detector.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109276076A (en) * | 2018-09-28 | 2019-01-29 | 武汉凯锐普信息技术有限公司 | A kind of wisdom mattress system and its test method |
| CN110169758A (en) * | 2019-07-02 | 2019-08-27 | 东北大学 | A kind of optoacoustic endoscopy imaging device and method of full light |
| CN111150378A (en) * | 2020-01-19 | 2020-05-15 | 武汉理工大学 | Non-invasive distributed optical fiber monitoring system and method for multiple physical signs of human sleep |
| CN111281389A (en) * | 2018-12-10 | 2020-06-16 | 深圳麦格米特电气股份有限公司 | Monitoring mattress is breathed to intelligence |
| CN117179748A (en) * | 2023-08-25 | 2023-12-08 | 嘉兴学院G60科创走廊产业与创新研究院 | Fiber bragg grating vital sign monitoring device and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2608945Y (en) * | 2003-03-20 | 2004-03-31 | 上海安文信息技术有限公司 | Optical fibre sensing interferometer |
| WO2005085766A2 (en) * | 2004-03-01 | 2005-09-15 | University Of Washington Techtransfer Invention Licensing | Polymer based distributive waveguide sensor for pressure and shear measurement |
| WO2009111827A1 (en) * | 2008-03-11 | 2009-09-17 | Commonwealth Scientific And Industrial Research Organisation | An optical device |
| CN104900000A (en) * | 2015-06-05 | 2015-09-09 | 左冬平 | Intelligent sleep monitoring system for preventing kids from kicking quilts |
| CN106798560A (en) * | 2017-03-09 | 2017-06-06 | 苏州安莱光电科技有限公司 | A kind of respiration monitoring device based on Mach once moral intermode interference |
| CN206342462U (en) * | 2016-10-19 | 2017-07-21 | 苏州安莱光电科技有限公司 | A kind of optical fiber vital sign supervising device based on Mach-Zahnder interference |
-
2017
- 2017-10-23 CN CN201710995183.9A patent/CN107595265A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2608945Y (en) * | 2003-03-20 | 2004-03-31 | 上海安文信息技术有限公司 | Optical fibre sensing interferometer |
| WO2005085766A2 (en) * | 2004-03-01 | 2005-09-15 | University Of Washington Techtransfer Invention Licensing | Polymer based distributive waveguide sensor for pressure and shear measurement |
| WO2009111827A1 (en) * | 2008-03-11 | 2009-09-17 | Commonwealth Scientific And Industrial Research Organisation | An optical device |
| CN104900000A (en) * | 2015-06-05 | 2015-09-09 | 左冬平 | Intelligent sleep monitoring system for preventing kids from kicking quilts |
| CN206342462U (en) * | 2016-10-19 | 2017-07-21 | 苏州安莱光电科技有限公司 | A kind of optical fiber vital sign supervising device based on Mach-Zahnder interference |
| CN106798560A (en) * | 2017-03-09 | 2017-06-06 | 苏州安莱光电科技有限公司 | A kind of respiration monitoring device based on Mach once moral intermode interference |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109276076A (en) * | 2018-09-28 | 2019-01-29 | 武汉凯锐普信息技术有限公司 | A kind of wisdom mattress system and its test method |
| CN111281389A (en) * | 2018-12-10 | 2020-06-16 | 深圳麦格米特电气股份有限公司 | Monitoring mattress is breathed to intelligence |
| CN111281389B (en) * | 2018-12-10 | 2022-11-08 | 深圳麦格米特电气股份有限公司 | Monitoring mattress is breathed to intelligence |
| CN110169758A (en) * | 2019-07-02 | 2019-08-27 | 东北大学 | A kind of optoacoustic endoscopy imaging device and method of full light |
| CN110169758B (en) * | 2019-07-02 | 2020-08-25 | 东北大学 | All-optical photoacoustic endoscopic imaging device and method |
| CN111150378A (en) * | 2020-01-19 | 2020-05-15 | 武汉理工大学 | Non-invasive distributed optical fiber monitoring system and method for multiple physical signs of human sleep |
| CN111150378B (en) * | 2020-01-19 | 2021-07-06 | 武汉理工大学 | Non-invasive distributed optical fiber monitoring system and method for multiple physical signs of human sleep |
| CN117179748A (en) * | 2023-08-25 | 2023-12-08 | 嘉兴学院G60科创走廊产业与创新研究院 | Fiber bragg grating vital sign monitoring device and method |
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