CN205562036U - Illumination intensity measuring device based on fiber bragg grating sensor technique - Google Patents
Illumination intensity measuring device based on fiber bragg grating sensor technique Download PDFInfo
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- CN205562036U CN205562036U CN201620307367.2U CN201620307367U CN205562036U CN 205562036 U CN205562036 U CN 205562036U CN 201620307367 U CN201620307367 U CN 201620307367U CN 205562036 U CN205562036 U CN 205562036U
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- 238000005286 illumination Methods 0.000 title claims abstract description 41
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- 238000000034 method Methods 0.000 title abstract description 9
- 238000006073 displacement reaction Methods 0.000 claims abstract description 19
- 238000005516 engineering process Methods 0.000 claims abstract description 10
- 238000005259 measurement Methods 0.000 claims description 22
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- 238000012986 modification Methods 0.000 description 2
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
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- 230000035882 stress Effects 0.000 description 1
- 230000002463 transducing effect Effects 0.000 description 1
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Abstract
The utility model provides an illumination intensity measuring device based on fiber bragg grating sensor technique, include: photoelectric converter spare, solenoid structure, magnet, cantilever structure and fiber bragg grating sensor ware. The utility model provides an illumination intensity measuring device converts illumination intensity into corresponding displacement through electromagnetic mode through photoelectric converter spare, solenoid structure and magnet to this displacement is measured through the grating sensing technology, illumination intensity measuring accuracy and reliability can be improved.
Description
Technical field
This utility model design intensity of illumination fields of measurement, particularly relates to a kind of intensity of illumination measurement apparatus based on fiber grating sensing technology.
Background technology
Generally use illumination meter at present and directly measure intensity of illumination.Illumination meter is a kind of conventional optical instrument, is made up of selenium cell or silicon cell and microampere meter, has certain application in multiple industries.The use of illumination meter is limited by several factors: the light cell drift in illumination meter changes along with variations in temperature, therefore should measure at room temperature；Illumination meter probe i.e. photodetector is glass material, easily breaks breakage, and the sensitivity of photodetector as use condition or use time and reduce.And mostly be electronic type illumination meter on the market, inherently by electromagnetic interference, actively powered, signal remote transmission is unstable, data transmission capacity is limited etc., and factor is affected, reliability is poor.
Utility model content
A purpose of the present utility model is the intensity of illumination measurement apparatus providing a kind of reliability high.
This utility model provides a kind of intensity of illumination measurement apparatus based on fiber grating sensing technology, including: electrooptical device, electromagnetic coil structure, Magnet, cantilever beam structure and fiber-optic grating sensor；
Wherein, described electrooptical device produces the current signal of corresponding size for the intensity of illumination according to the light received and exports electromagnetic coil structure；
Described electromagnetic coil structure is for producing the magnetic field that intensity is corresponding with the size of the current signal received after receipt of the current signal；
Described Magnet is arranged on the free end of described cantilever beam structure；According to the intensity difference in the magnetic field that described electromagnetic coil structure produces, described Magnet makes the displacement difference of the free end of described cantilever beam structure；
Described fiber-optic grating sensor, is arranged on the hold-down support of described cantilever beam structure, for detecting the displacement of the hold-down support of described cantilever beam structure.
Further, described electrooptical device is solar panel.
Further, described electromagnetic coil structure includes Helmholtz coil arrangement, and one end of Helmholtz coil arrangement couples the positive pole to described solar panel, and the other end couples the negative pole to described solar panel.
Further, also include between the both positive and negative polarity that power control switch, described power control switch and described electromagnetic coil structure are connected on described solar panel.
Further, fixed value resistance is also included；Described fixed value resistance and described electromagnetic coil structure are connected between the both positive and negative polarity of solar panel, for limiting the electric current flowing through described electromagnetic coil structure.
Further, variable resistance is also included；Described variable resistance and described electromagnetic coil structure are connected between the both positive and negative polarity of solar panel, flow through the electric current of described electromagnetic coil structure for regulation.
Further, the quantity of described fiber-optic grating sensor is two.
The intensity of illumination measurement apparatus that this utility model provides, is converted to intensity of illumination corresponding displacement by the way of electromagnetism, and measures this displacement by grating sensing technique, it is possible to increase the accuracy of intensity of illumination measurement and reliability.
Accompanying drawing explanation
By being more clearly understood from feature and advantage of the present utility model with reference to accompanying drawing, accompanying drawing is schematic and should not be construed as this utility model is carried out any restriction, in the accompanying drawings:
Fig. 1 shows the structure chart of a kind of embodiment of the intensity of illumination measurement apparatus based on fiber grating sensing technology that this utility model provides.
Detailed description of the invention
Below the correlation technique that first reception this utility model relates to:
Fiber-optic grating sensor: fiber-optic grating sensor, in addition to having the many merits of ordinary optic fibre sensor, also has its special advantage.The transducing signal that most important of which is that it is wavelength-modulated.Therefore, since fiber grating is used as sensing by reported first in 1989, received world wide and extensively paid attention to and pay close attention to, had been achieved for development continuously and healthily so far, and be widely used in multiple field such as aviation, building.
FBG (Fiber Bragg Grating FBG): FBG (Fiber Bragg Grating FBG) measures signal not to be affected by factors such as light source fluctuating, bending loss of optical fiber, junction loss and detector are aging, avoid the unintelligible of relative measurement in general interferometric sensor, break away from the dependence to intrinsic reference point.It addition, fiber grating is prone to imbed in material, the strain of its inside and temperature can be carried out high resolution and measure on a large scale.FBG also have highly sensitive, wide dynamic range, not by electromagnetic interference, reliability height, low cost, volume is little, can imbed the series of advantages such as structure of intelligence, it is not necessary to actively powered.Therefore, intensity of illumination measuring method based on fiber grating sensing technology, it is possible to overcome the weak point of illumination meter.
Based on above-mentioned correlation technique, this utility model provides a kind of intensity of illumination measurement apparatus based on fiber grating sensing technology, intensity of illumination is converted to by the way of electromagnetism displacement by this device, and measure this displacement by grating sensing technique, it is possible to increase the accuracy of intensity of illumination measurement and reliability.
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
Fig. 1 shows the structure chart of a kind of embodiment of the intensity of illumination measurement apparatus based on fiber grating sensing technology that this utility model provides, including: electrooptical device 1, electromagnetic coil structure 2, Magnet 3, cantilever beam structure 4 and fiber-optic grating sensor 5；
Wherein, electrooptical device 1 produces the current signal of corresponding size for the intensity of illumination according to the light received and exports electromagnetic coil structure 2；
Electromagnetic coil structure 2 is for producing the magnetic field that intensity is corresponding with the size of the current signal received after receipt of the current signal；
Magnet 3 is arranged on the free end of cantilever beam structure 4；Intensity difference according to the magnetic field that electromagnetic coil structure 2 produces, the magnetic force that Magnet 3 is subject to is different, the displacement of the free end of cantilever beam structure 4 is different (understandable is, here displacement can be the free end displacement relative to the reference position of this free end, the reference position of free end can specifically refer to when not being applied in electric current on electromagnetic coil structure 2, thus when not producing magnetic field, the position of the free end of cantilever beam structure 4)；
Fiber-optic grating sensor 5, it is arranged on the hold-down support of cantilever beam structure 4, for detecting the displacement of the hold-down support of cantilever beam structure 4 (understandable it is, here displacement can be the hold-down support displacement relative to the reference position of this hold-down support, the reference position of hold-down support can specifically refer to when free end is positioned at reference position corresponding to free end, hold-down support location)；When the general reference position corresponding with this hold-down support when the hold-down support of cantilever beam structure 4 has certain displacement, the hold-down support of cantilever beam structure 4 is more than the free end displacement relative to the reference position of this free end of cantilever beam structure 4 relative to the displacement of the reference position of this hold-down support.
Preferably, described electrooptical device 1 can be specially solar panel.The most in the specific implementation; here electrooptical device 1 can be that other can be according to the structure of the intensity of illumination different size of current signal of generation of the light received; such as light sensitive diode etc.; corresponding technical scheme also is able to reach basic object of the present utility model, also should fall into protection domain of the present utility model.
Preferably, electromagnetic coil structure 2 includes Helmholtz coil arrangement, and one end of Helmholtz coil arrangement couples the positive pole to described solar panel 1, and the other end couples the negative pole to described solar panel 1.
Helmholtz coil arrangement can be that two identical coils are parallel to each other and coaxial, make on coil, to pass to equidirectional electric current, Theoretical Calculation prove coil-span equal to coil radius time, two coils close magnetic fields on axle near (two coil circle center line connectings) in a big way in be uniform.
Preferably, in the specific implementation, participating in Fig. 1, also including can be with power control switch 6, and described power control switch 6 and described electromagnetic coil structure 2 are connected between the both positive and negative polarity of solar panel 1.
Preferably, in the specific implementation, Fig. 1 is participated in, it is also possible to include fixed value resistance 7；Described fixed value resistance 7 and described electromagnetic coil structure 2 are connected between the both positive and negative polarity of solar panel 1, for limiting the electric current flowing through described electromagnetic coil structure 2.In this way, it is possible to avoid electromagnetic coil structure 2 to damage because electric current is excessive,
Preferably, in the specific implementation, Fig. 1 is participated in, it is also possible to include variable resistance 8；Described variable resistance 8 is connected with described electromagnetic coil structure 2, flows through the electric current of described electromagnetic coil structure 2 for regulation.In this way, it is possible to avoid electromagnetic coil structure 2 to damage because electric current is excessive, and the deformation under certain magnetic field intensity of the cantilever beam free end can be regulated by regulating this variable resistance 8, it is achieved the control to the process of measurement.
Preferably, seeing Fig. 1, the quantity of described fiber-optic grating sensor 5 is two, and one of them is expressed as A, and another is expressed as B.In this way, it is possible to difference process is done in the change to wavelength, effectively gets rid of the interference of fiber-optic grating sensor cross sensitivity with this, gets rid of the temperature impact on wavelength value, make result more accurate.
In the specific implementation, in order to make measurement structure the most accurate, can be according to the mode of Fig. 1, cantilever beam structure 4 is vertically disposed in the axis midpoint of two coils, fiber-optic grating sensor 5 is attached on two faces of hold-down support of cantilever beam structure 4 respectively, and small magnet 3 is then attached to the free end of cantilever beam structure.
The operation principle of the intensity of illumination measurement apparatus that this embodiment provides is:
Solar panel 1 directly contacts with natural light, and owing to intensity of illumination changes, the output electric current of solar panel 1 also can occur to change accordingly.Helmholtz coil arrangement 2 is under the change of electric current, and the magnetic field between two coils also creates corresponding change.The magnetic force that the change in magnetic field makes the small magnet 3 being attached to cantilever beam structure 4 free end be subject to changes, and magnetic force drives the free end of cantilever beam structure 4 to deform upon.Double optical fiber grating is along the central symmetry axis symmetrical upper and lower surfaces being attached to cantilever beam structure 4 rigidly, due to cantilever beam structure 4 times, the centre wavelength drift value of fiber grating becomes preferable linear relationship with the free end stress of cantilever beam structure 4, therefore monitor the center wavelength shift amount of fiber grating, can get intensity of illumination further.
Although being described in conjunction with the accompanying embodiment of the present utility model, but those skilled in the art can make various modifications and variations in the case of without departing from spirit and scope of the present utility model, within the scope of such amendment and modification each fall within and be defined by the appended claims.
Claims (7)
1. an intensity of illumination measurement apparatus based on fiber grating sensing technology, it is characterised in that including: electrooptical device, electromagnetic coil structure, Magnet, cantilever beam structure and fiber-optic grating sensor；
Wherein, described electrooptical device produces the current signal of corresponding size for the intensity of illumination according to the light received and exports electromagnetic coil structure；
Described electromagnetic coil structure is for producing the magnetic field that intensity is corresponding with the size of the current signal received after receipt of the current signal；
Described Magnet is arranged on the free end of described cantilever beam structure；According to the intensity difference in the magnetic field that described electromagnetic coil structure produces, described Magnet makes the displacement difference of the free end of described cantilever beam structure；
Described fiber-optic grating sensor, is arranged on the hold-down support of described cantilever beam structure, for detecting the displacement of the hold-down support of described cantilever beam structure.
2. intensity of illumination measurement apparatus as claimed in claim 1, it is characterised in that described electrooptical device is solar panel.
3. intensity of illumination measurement apparatus as claimed in claim 2, it is characterized in that, described electromagnetic coil structure includes Helmholtz coil arrangement, and one end of Helmholtz coil arrangement couples the positive pole to described solar panel, and the other end couples the negative pole to described solar panel.
4. intensity of illumination measurement apparatus as claimed in claim 2, it is characterised in that also include between the both positive and negative polarity that power control switch, described power control switch and described electromagnetic coil structure are connected on described solar panel.
5. the intensity of illumination measurement apparatus as described in any one of claim 2-4, it is characterised in that also include fixed value resistance；Described fixed value resistance and described electromagnetic coil structure are connected between the both positive and negative polarity of solar panel, for limiting the electric current flowing through described electromagnetic coil structure.
6. the intensity of illumination measurement apparatus as described in any one of claim 2-4, it is characterised in that also include variable resistance；Described variable resistance and described electromagnetic coil structure are connected between the both positive and negative polarity of solar panel, flow through the electric current of described electromagnetic coil structure for regulation.
7. intensity of illumination measurement apparatus as claimed in claim 1, it is characterised in that the quantity of described fiber-optic grating sensor is two.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620307367.2U CN205562036U (en) | 2016-04-13 | 2016-04-13 | Illumination intensity measuring device based on fiber bragg grating sensor technique |
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| CN201620307367.2U CN205562036U (en) | 2016-04-13 | 2016-04-13 | Illumination intensity measuring device based on fiber bragg grating sensor technique |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107063450A (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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107063450A (en) * | 2016-11-16 | 2017-08-18 | 国家电网公司 | A kind of intensity of illumination measuring system |
| CN107063450B (en) * | 2016-11-16 | 2018-09-18 | 国家电网公司 | A kind of intensity of illumination measuring system |
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