CN107063450B - A kind of intensity of illumination measuring system - Google Patents
A kind of intensity of illumination measuring system Download PDFInfo
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- CN107063450B CN107063450B CN201611034592.4A CN201611034592A CN107063450B CN 107063450 B CN107063450 B CN 107063450B CN 201611034592 A CN201611034592 A CN 201611034592A CN 107063450 B CN107063450 B CN 107063450B
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- 230000003287 optical effect Effects 0.000 claims description 19
- 238000012545 processing Methods 0.000 claims description 18
- 230000003595 spectral effect Effects 0.000 claims description 13
- 238000001228 spectrum Methods 0.000 claims description 8
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/02—Details
- G01J1/04—Optical or mechanical part supplementary adjustable parts
- G01J1/0407—Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings
- G01J1/0425—Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings using optical fibers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/4204—Photometry, e.g. photographic exposure meter using electric radiation detectors with determination of ambient light
Abstract
The present invention provides a kind of intensity of illumination measuring system, based on fiber-optic grating sensor, the method and apparatus that intensity of illumination measures are realized in conjunction with solar panel and stationary magnetic field, and to solve existing illumination photometer intensity of illumination measurement method, actively powered, electromagnetism interference is poor, signal remote transmission is unstable, limited etc. the problem encountered of data transmission capacity needing.
Description
Technical field
The present invention relates to intensity of illumination fields of measurement, more particularly, to a kind of intensity of illumination measuring system.
Background technology
Currently, for the measurement method of illumination size, generally measured with illumination photometer.Illumination photometer can measure the strong of different wave length
It spends (such as to the measurement of visible light wave range and ultra-violet bands), accurate measurement result can be provided to people.Illumination photometer usually by
Selenium cell or silicon photocell and microampere meter composition, are mainly widely used in scientific research, production, military project, electronics, light textile, shadow at present
Depending on, build, traffic and the professional domains such as health care and health and epidemic prevention.
The use of illumination photometer is limited by several factors：Environment temperature has an impact the measurement result of illumination photometer, especially
Be actual measurement when environment temperature differ with environment temperature when calibration compared with as large as cold winter or extremely hot summer in the case of,
It influences more notable.In illumination photometer, it is not only photocell, the external circuit to connect with photocell, gauge outfit resistance etc., with temperature
And change；Humidity control degree meter also has an impact；Receiver is easy aging, because receiver aging will have a direct impact on the survey of illumination photometer
Accuracy is measured, the service life of illumination photometer is shortened.
Although traditional illumination photometer can reach higher measurement accuracy, its in complicated measuring environment be easy by
The influence of electromagnetic interference, the factors such as actively powered, signal remote transmission is unstable, data transmission capacity is limited, or disliked
The damage of bad environment, reliability and safety are poor.Fiber Bragg grating sensor has electromagnetism interference, is not necessarily to active confession
It is electric, corrosion-resistant, be easy to carry out the advantages of conditional electronics formula sensor such as distributed measurement does not have, additionally there is sensitivity
Height, wide dynamic range, reliability be high, it is at low cost, small, the series of advantages such as intelligence structure can be embedded to, be very suitable for applying
In the adverse circumstances such as high temperature, high-intensity magnetic field.Therefore, the intensity of illumination measurement method based on fiber grating sensing technology, Neng Gouyou
The shortcoming for making up illumination photometer measurement method of effect.
What fiber bragg grating with its flexible and changeable design feature, was well stablized as a kind of novel optical fibre device
Selecting frequency characteristic has obtained very big concern and has obtained continuous progress.Fiber bragg grating is in the way of illumination, etching etc. in light
The index distribution formed in fibre.Light couples when being transmitted in the optical fiber with this index distribution, to realize
Phenomena such as reflection and loss, occurs when transmitting in a fiber for control light.Using this characteristic, fiber bragg grating is in optical information
The fields such as processing, fiber optic communication and Fibre Optical Sensor have obtained great development and application.
Fiber-optic grating sensor is other than many merits with ordinary optic fibre sensor, also its special advantage.By
In fiber grating it is small, anticorrosive, anti-interference, can carry out distributed measurement and can be used as independent Fibre Optical Sensor member
The advantages that part is monitored testee makes it in sensory field extensive use.Its maximum advantage is that its wavelength modulation passes
Feel mechanism, this sensor mechanism makes its detectivity not by light source intensity variation, detector aging, junction loss and fibre-optical bending
Etc. factors influence, and multiple fiber gratings can be concatenated in same root optical fiber and carry out distributed measurements.
Invention content
The present invention solves the above problems in order to overcome the problems referred above or at least partly, provides a kind of intensity of illumination measurement system
System.
According to an aspect of the present invention, a kind of intensity of illumination measuring system is provided, including：
Intensity of illumination harvester and intensity of illumination computing device；
The intensity of illumination harvester includes solar panel, rod-shaped conductor and fiber Bragg grating strain sensor；
The intensity of illumination computing device is connected with the intensity of illumination harvester, for receiving intensity of illumination acquisition
The spectral signal that device is sent is calculated based on the spectral signal and obtains smooth intensity of illumination to be measured；
Wherein, the solar panel：Light to be measured is received, positive and negative anodes are connected with the rod-shaped conductor both ends respectively,
The light to be detected is converted into electric energy；
The rod-shaped conductor：It is placed in the magnetic field, is used in a manner of non-parallel to stationary magnetic field line direction
The stationary magnetic field effect is lower to generate deformation；
The fiber Bragg grating strain sensor：It calculates and fills with position among the rod-shaped conductor and the intensity of illumination respectively
Set it is connected, with the rod-shaped conductor among be equipped with insulator, for by the rod-shaped conductor deformation quantity signal be converted into spectrum letter
Number.
The application proposes a kind of intensity of illumination measuring system, is based on fiber-optic grating sensor, in conjunction with solar panel and
The method and apparatus that intensity of illumination measures are realized in stationary magnetic field, active in need to solve existing illumination photometer intensity of illumination measurement method
Power supply, electromagnetism interference is poor, signal remote transmission is unstable, data transmission capacity be limited etc. problem encountered.
Description of the drawings
Fig. 1 is according to a kind of structural schematic diagram of intensity of illumination measuring system of the embodiment of the present invention.
Specific implementation mode
With reference to the accompanying drawings and examples, the specific implementation mode of the present invention is described in further detail.Implement below
Example is not limited to the scope of the present invention for illustrating the present invention.
In Fig. 1, in a specific embodiment of the invention, a kind of intensity of illumination measuring system structural schematic diagram is shown.It is overall
For, including：Intensity of illumination harvester A1 is connected with intensity of illumination computing device A2, including solar panel A11, perseverance
Fixed-field A12, rod-shaped conductor A13 and fiber Bragg grating strain sensor A14；The solar panel positive and negative anodes respectively with it is described
Rod-shaped conductor both ends are connected, and for receiving light to be measured, the light to be detected is converted to electric energy；The rod-shaped conductor is with non-flat
Row is placed in stationary magnetic field line direction mode in the magnetic field, for generating deformation under being acted in the stationary magnetic field；
The fiber Bragg grating strain sensor is connected respectively at position among the rod-shaped conductor and the intensity of illumination computing device,
It is equipped with insulator A15 among the fiber Bragg grating strain sensor and the rod-shaped conductor, is used for the rod-shaped conductor deformation
Amount signal is converted into spectral signal；Intensity of illumination computing device A2, is connected with intensity of illumination harvester, strong for receiving illumination
The spectral signal that degree harvester is sent is calculated based on the spectral signal and obtains smooth intensity of illumination to be measured.
A specific embodiment of the invention, a kind of intensity of illumination measuring system, described device are connect using solar panel
Light to be measured is received, in conjunction with stationary magnetic field and the cantilever beam structure of fiber Bragg grating strain sensor, has collectively constituted intensity of illumination
Measuring device.Induction component using solar panel as light, stationary magnetic field, cantilever beam structure are cores, are attached to
Fiber Bragg grating strain sensor on cantilever is the sensing element of the present invention.By monitoring optic fiber grating wavelength drift, it can be seen that
The stress of cantilever beam free end rod-shaped conductor changes, and further obtains the variation that solar panel generates electric current, it can thus be concluded that
To the variable quantity of intensity of illumination, i.e., the measurement drifted about to optic fiber grating wavelength will be dexterously converted into the measurement of intensity of illumination.
A specific embodiment of the invention, a kind of intensity of illumination measuring system, as shown in Figure 1, the intensity of illumination calculates
Device A2 includes local side light source A21, coupler A22, demodulation module A23 and processing module A24, described：Local side light source A21 passes through
Coupler A22, optical-fibre channel are connected A14 with fiber Bragg grating strain sensor, are answered for narrow-band spectrum to be sent to fiber grating
Become sensors A 14；Demodulation module A23 is connected by coupler A22, optical-fibre channel with fiber Bragg grating strain sensor A14, is used for
Spectral signal that reception optical fiber grating strain transducer A14 is sent simultaneously is converted into digital signal；Processing module A24 and solution mode transfer
Block A23 is connected, and for receiving the digital signal, is calculated using the digital signal and obtains smooth intensity of illumination to be measured.
A specific embodiment of the invention, a kind of intensity of illumination measuring system, the optical-fibre channel are strong for completing illumination
Spend the transmission of data between harvester and intensity of illumination computing device.Related data transmission is to lead to the narrowband optical signal of local side
It crosses optical-fibre channel and is transmitted to fiber-optic grating sensor, or the monitoring data that above-mentioned fiber grating intensity of illumination sensor generates are led to
It crosses optical-fibre channel and is transmitted to demodulation module.
A specific embodiment of the invention, a kind of intensity of illumination measuring system, the demodulation module generate narrow-band frequency-sweeping light
(i.e. the narrow band lights of frequency size consecutive variations) and emitted at fiber-optic grating sensor by optical-fibre channel.When frequency sweep optical wavelength
It will reflect when being matched with the centre wavelength of fiber-optic grating sensor, be reflected back to may detect at (FBG) demodulator
Luminous power, and in turn (FBG) demodulator by the optical signal demodulation received at the digital signal of Wavelength-encoding.
A specific embodiment of the invention, a kind of intensity of illumination measuring system, the processing module is by modeling and data
Processing obtains the real-time change of the strain value of monitoring point from the reflection wavelength of the fiber-optic grating sensor received, goes forward side by side
And the variation reflected to cantilever beam free end stress, it determines that solar panel generates the variation of electric current, light is tested to obtain
According to the real-time change of intensity.
A specific embodiment of the invention, a kind of intensity of illumination measuring system, as shown in Figure 1, further including：Display device
A3 is connected with processing module A24, for receiving and showing the smooth intensity of illumination to be measured.Through data processing module A24 processing
The display for being shown in local side in real time in survey illumination intensity information afterwards is surveying intensity of illumination from local side display, that is, Observable
Size.
A specific embodiment of the invention, a kind of intensity of illumination measuring system, the stationary magnetic field is by two pieces of platen parallels
It places and constitutes.
A specific embodiment of the invention, a kind of intensity of illumination measuring system, the stationary magnetic field are constant parallel magnetic field.
A specific embodiment of the invention, a kind of intensity of illumination measuring system, the rod-shaped conductor can be rodlike conducting wire
Cluster.
A specific embodiment of the invention, a kind of intensity of illumination measuring system, the rod-shaped conductor is with perpendicular to the perseverance
Fixed-field line direction mode is placed in the magnetic field.
A specific embodiment of the invention, a kind of intensity of illumination measuring system, the fiber Bragg grating strain sensor and institute
Rod-shaped conductor is stated vertically to be fixedly connected.
A specific embodiment of the invention, a kind of intensity of illumination measuring system, the intensity of illumination harvester pass through light
Fine channel is connected with intensity of illumination computing device.
A specific embodiment of the invention, a kind of intensity of illumination measuring system, the pipeline passway is for completing optical fiber light
The transmission of data between gate sensor and local side.Related data transmission is to transmit the narrowband optical signal of local side by optical-fibre channel
It is transmitted by optical-fibre channel to fiber-optic grating sensor, or by the monitoring data that above-mentioned fiber grating intensity of illumination sensor generates
To local side demodulation module.
A specific embodiment of the invention, a kind of intensity of illumination measuring system, the optical-fibre channel can be by OPGW optical cables
Or OPPC optical cables are constituted.
A specific embodiment of the invention, a kind of workflow of intensity of illumination measuring system are as follows：It is sent out by local side light source
The narrow-band spectrum penetrated, the illumination that the optical fiber transport channel (OPGW or OPPC optical cables) through light data transmission module is transmitted to distal end are strong
Spend the fiber-optic grating sensor of harvester.
Fiber-optic grating sensor in intensity of illumination harvester, the intensity of illumination data acquired in conjunction with solar panel
Illumination intensity information is changed into strain center wavelength information by information, through FBG be reflected back with the matched spectrum of its centre wavelength,
The spectrum being reflected back is carried in the relevant information for surveying intensity of illumination.
Distal end acquisition intensity of illumination data information, by data transmission module optical fiber transport channel (OPGW or
OPPC optical cables) it is transferred to the demodulation module of local side, it is demodulated through FBG (FBG) demodulators, by optical signal demodulation at the number of Wavelength-encoding
Signal.
Digital signal after demodulation, through data line transfer to data processing module (server), server is to above-mentioned processing
Signal into row information extraction and processing, obtain fiber-optic grating sensor strain wavelength, and according to existing linear relationship public affairs
Formula is calculated and is surveying real-time lighting strength information.Far-end server is connected with display, and the Real-Time Optical that will be calculated
It is shown in display according to strength information.
In the data handling procedure of digital signal processing module, fiber-optic grating sensor is obtained first and strains spectral information, according to
Illumination intensity information, real-time display is calculated in linear relationship.
In conjunction with Fig. 1, one specific embodiment of the present invention, a kind of workflow of intensity of illumination measuring system is as follows：
Intensity of illumination harvester, solar panel are in direct contact with light to be detected, as the sensing element of light, simultaneously
Electric energy is converted light energy into, the power supply as entire circuit supplies.Since intensity of illumination changes, solar panel it is defeated
Going out electric current also can occur to change accordingly.Electrical conductor is acted on by magnetic field between two magnet, and magnetic force drives cantilever beam free end
It deforms upon.Due under cantilever beam structure, the centre wavelength drift value of fiber grating is with cantilever beam free end stress at preferable
Linear relationship, therefore monitor the center wavelength shift amount of fiber grating, intensity of illumination further can be obtained.
Optical-fibre channel is that the spectrum that local side light source is sent out is transferred to distal end through optical fiber transport channel (OPGW or OPPC)
FBG and the light letter that the FBG corresponding spectral informations reflected the strain information that actual measurement intensity of illumination generates are transferred back to local side
Cease demodulation module.Fiber-optic grating sensor is serially connected through coupler and optical fiber transport channel.
Local side light source and demodulation module：The transmitting of optical signal and receiving module include local side light source and optical signal demodulation mould
Block.Local side light source launches narrow-band spectrum, and reaches distal end strain transducer through transmission channel, and strain transducer is reflected back accordingly
Strain wavelength to demodulation module, demodulation module detects the optical signal power being reflected back, and the optical signal demodulation that will be received
At the digital signal of Wavelength-encoding.
Data processing module：After the solution of the demodulated module of spectral signal is tone coded, demodulation data transmission arrives server, services
Device analyzes the wavelength data of acquisition and corresponding real-time lighting intensity is calculated.In addition, above-mentioned after processing and display
Data will not abandon, but be preserved in preset position, so that later reference is analyzed.
Local side display：Local side display is surveying illumination intensity information for after handling data processing module, obtaining
Display in real time, makes information collection and data comparison more intuitively show, and can measure the real-time amendment of value in front end, side
Convenient to operate, it is simple and easy to do.
Based on the intensity of illumination monitoring device of fiber-optic grating sensor, the light for cleverly receiving solar panel
According to strength information, conducting wire cluster stress in magnetic field is converted to, causes the cantilever beam deformation equipped with FBG sensor, it is corresponding to obtain
Data information.
Finally, the present processes are only preferable embodiment, are not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in the protection of the present invention
Within the scope of.
Claims (9)
1. a kind of intensity of illumination measuring system, which is characterized in that including：Intensity of illumination harvester and intensity of illumination calculate dress
It sets；
The intensity of illumination harvester includes solar panel, rod-shaped conductor and fiber Bragg grating strain sensor；
The intensity of illumination computing device is connected with the intensity of illumination harvester, for receiving intensity of illumination harvester
The spectral signal of transmission is calculated based on the spectral signal and obtains smooth intensity of illumination to be measured；
Wherein, the solar panel：Light to be measured is received, positive and negative anodes are connected with the rod-shaped conductor both ends respectively, by institute
It states light to be measured and is converted to electric energy；
The rod-shaped conductor：It is placed in magnetic field in a manner of non-parallel to stationary magnetic field line direction, for being acted in stationary magnetic field
Lower generation deformation；
The fiber Bragg grating strain sensor：Respectively with position and the intensity of illumination computing device phase among the rod-shaped conductor
Even, it is equipped with insulator with rod-shaped conductor centre, for converting the rod-shaped conductor deformation quantity signal to spectral signal；Institute
It includes local side light source, coupler, demodulation module and processing module to state intensity of illumination computing device；
The local side light source is connected by coupler, optical-fibre channel with fiber Bragg grating strain sensor, for sending out narrow-band spectrum
Give fiber Bragg grating strain sensor；
The demodulation module is connected by coupler, optical-fibre channel with fiber Bragg grating strain sensor, and reception optical fiber grating is used for
Spectral signal that strain transducer is sent simultaneously is converted into digital signal；
Processing module is connected with demodulation module, and for receiving the digital signal, it is to be measured to calculate acquisition using the digital signal
Measure light intensity of illumination.
2. the system as claimed in claim 1, which is characterized in that further include：Display device is connected with processing module, for connecing
It receives and shows the smooth intensity of illumination to be measured.
3. the system as claimed in claim 1, which is characterized in that the stationary magnetic field is made of two pieces of platen parallel placements.
4. the system as claimed in claim 1, which is characterized in that the stationary magnetic field is constant parallel magnetic field.
5. the system as claimed in claim 1, which is characterized in that the rod-shaped conductor can be rodlike conducting wire cluster.
6. the system as claimed in claim 1, which is characterized in that the rod-shaped conductor is with perpendicular to stationary magnetic field line direction
Mode is placed in the magnetic field.
7. system as claimed in claim 5, which is characterized in that the fiber Bragg grating strain sensor hangs down with the rod-shaped conductor
Directly it is fixedly connected.
8. the system as claimed in claim 1, which is characterized in that the intensity of illumination harvester passes through optical-fibre channel and illumination
Strength co-mputation device is connected.
9. system as claimed in claim 8, which is characterized in that the optical-fibre channel can be by OPGW optical cables or OPPC optical cable structures
At.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252752A (en) * | 2011-05-04 | 2011-11-23 | 清华大学 | Portable universal serial bus (USB) optical power meter |
| CN202511882U (en) * | 2011-01-27 | 2012-10-31 | 岚雅光学股份有限公司 | Optical characteristic measuring system |
| CN205562036U (en) * | 2016-04-13 | 2016-09-07 | 国家电网公司 | Illumination intensity measuring device based on fiber bragg grating sensor technique |
| CN206420564U (en) * | 2016-11-16 | 2017-08-18 | 国家电网公司 | A kind of intensity of illumination measuring system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004361109A (en) * | 2003-06-02 | 2004-12-24 | Fujitsu Ltd | Optical power meter |
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2016
- 2016-11-16 CN CN201611034592.4A patent/CN107063450B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202511882U (en) * | 2011-01-27 | 2012-10-31 | 岚雅光学股份有限公司 | Optical characteristic measuring system |
| CN102252752A (en) * | 2011-05-04 | 2011-11-23 | 清华大学 | Portable universal serial bus (USB) optical power meter |
| CN205562036U (en) * | 2016-04-13 | 2016-09-07 | 国家电网公司 | Illumination intensity measuring device based on fiber bragg grating sensor technique |
| CN206420564U (en) * | 2016-11-16 | 2017-08-18 | 国家电网公司 | A kind of intensity of illumination measuring system |
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