CN109115338A - Illumination intensity measuring system - Google Patents
Illumination intensity measuring system Download PDFInfo
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- CN109115338A CN109115338A CN201811157063.2A CN201811157063A CN109115338A CN 109115338 A CN109115338 A CN 109115338A CN 201811157063 A CN201811157063 A CN 201811157063A CN 109115338 A CN109115338 A CN 109115338A
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- 238000005286 illumination Methods 0.000 title claims abstract description 60
- 230000003287 optical effect Effects 0.000 claims abstract description 89
- 238000001514 detection method Methods 0.000 claims abstract description 54
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 230000004907 flux Effects 0.000 claims description 27
- 238000012545 processing Methods 0.000 claims description 22
- 230000035945 sensitivity Effects 0.000 claims description 12
- 230000005611 electricity Effects 0.000 claims description 7
- 230000008054 signal transmission Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000002238 attenuated effect Effects 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 9
- 238000005259 measurement Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000005622 photoelectricity Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
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- 230000004044 response Effects 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 239000005441 aurora Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
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- 241000196324 Embryophyta Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
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- 230000008713 feedback mechanism Effects 0.000 description 1
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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
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/44—Electric circuits
-
- 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
- G01J1/44—Electric circuits
- G01J2001/4446—Type of detector
- G01J2001/4453—PMT
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- Spectroscopy & Molecular Physics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention provides an illumination intensity measuring system, comprising: a photoelectric conversion system and a control system; the photoelectric conversion system comprises a light attenuation module and a light detection module; the optical attenuation module is used for attenuating light to be detected received by the photoelectric conversion system; the optical detection module is used for receiving the attenuated light attenuated by the optical attenuation module, generating an electric signal and transmitting the electric signal to the control system; the control system is used for determining the intensity parameter of the light to be measured according to the electric signal. The light attenuation module attenuates the light to be measured, so that the range of the intensity parameter of the light to be measured, which can be measured by the illumination intensity measuring system, is enlarged.
Description
Technical field
The present invention relates to optical technical fields, in particular to a kind of intensity of illumination measuring system.
Background technique
Either illumination calibration, agricultural plant the illumination detection or military night vision test, reflecting material of public place
Test, car light fault detection or experimental study etc., illumination photometer all has important application value.Currently, in the market
Illumination photometer measurement range is smaller, cannot achieve large-scale measurement.
Summary of the invention
The present invention provides a kind of intensity of illumination measuring system, to solve to be unable to measure a wide range of faint scattering intensity of illumination
Problem.
To achieve the goals above, technical solution provided by the embodiment of the present invention is as follows:
The embodiment of the present invention provides a kind of intensity of illumination measuring system, comprising: photo-translating system and control system；Institute
Stating photo-translating system includes optical attenuation module and optical detection module；Wherein, the optical attenuation module is used for the photoelectricity
The light to be measured that converting system receives is decayed；The optical detection module is for receiving after optical attenuation module decaying
Decaying light, generates electric signal, by the electric signal transmission to the control system；The control system is used for according to the telecommunications
Number determine the intensive parameter of the light to be measured.
In alternative embodiment of the invention, the optical attenuation module includes at least one attenuator, described declines with each
Subtract the motor and the driver being correspondingly connected with the motor that piece is correspondingly connected with；The driver controls signal for receiving,
The motor is driven according to the control signal, so that the motor adjusts the attenuator to target position.
In alternative embodiment of the invention, the control system is also used to generate the control letter according to the electric signal
Number；The driver is used to receive the control signal from the control system.
In alternative embodiment of the invention, the optical detection module is photomultiplier tube；The decaying light is from the light
The cathode of electric multiplier tube is injected, and is converted to electric signal and is exported from the anode of the photomultiplier tube.
In alternative embodiment of the invention, the control system includes controller, signal processing module and storage mould
Block；The signal processing module is used to receive the electric signal of the anode output of the photomultiplier tube, to the electric signal
Handled, will treated electric signal transmission to the controller；The controller is used for according to treated the telecommunications
It number determines the intensive parameter of the light to be measured, and the intensive parameter of the light to be measured is stored in the memory module
In.
In alternative embodiment of the invention, treated that electric signal determines the light to be measured according to described for the controller
The intensive parameter, comprising: according to the anode luminous sensitivity S of the photomultiplier tubepAnd the photomultiplier tube
Anode exports electric current IpThe cathode that the photomultiplier tube is calculated receives luminous flux φv:
Luminous flux φ is received according to the cathode of the photomultiplier tubevAnd the cathode surface of the photomultiplier tube
The cathode illumination E of the photomultiplier tube is calculated in unit area Av:
And/or luminous flux φ is received according to the cathode of the photomultiplier tubevAnd the yin of the photomultiplier tube
Aurora shine sensitivity SkThe cathode output electric current I of the photomultiplier tube is calculatedk:
In alternative embodiment of the invention, the controller determines the described strong of the light to be measured according to the electric signal
Spend parameter, further includes: electric current I is exported according to the cathode of the photomultiplier tubekAnd the cathode of the photomultiplier tube
Radiosusceptibility SeThe cathode radiant luminous flux φ of the photomultiplier tube is calculatede:
In alternative embodiment of the invention, the signal processing module includes: amplifying circuit and analog to digital conversion circuit；
The amplifying circuit is used to amplify the electric signal of the anode output of the photomultiplier tube；Analog-digital conversion circuit as described
For amplified electric signal to be converted to digital signal, and by the digital data transmission to the controller.
In alternative embodiment of the invention, the control system further include: display module；The display module includes aobvious
Show submodule and key control submodule；The display sub-module is used to export the intensive parameter of the light to be measured, institute
Key control submodule is stated for controlling the display sub-module.
In alternative embodiment of the invention, the system also includes: magazine；The attenuator is provided in the magazine
And the optical detection module；Described magazine one end opens up through-hole, and the light to be measured is injected from the through-hole, by the decaying
The optical detection module is injected after the decaying of piece.
A kind of intensity of illumination measuring system provided in an embodiment of the present invention, comprising: photo-translating system and control system；
The photo-translating system includes optical attenuation module and optical detection module；Wherein, the optical attenuation module is used for the light
The light to be measured that power conversion system receives is decayed；The optical detection module is for receiving after optical attenuation module decaying
Decaying light, generate electric signal, by the electric signal transmission to the control system；The control system is used for according to the electricity
Signal determines the intensive parameter of the light to be measured.Decaying by the optical attenuation module to the light to be measured, makes the illumination
The intensive parameter range of the measurable light to be measured of strength measurement system increases.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, the embodiment of the present invention is cited below particularly, and match
Appended attached drawing is closed, is described in detail below.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described.It should be appreciated that the following drawings illustrates only certain embodiments of the present invention, therefore it is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is a kind of structural block diagram of intensity of illumination measuring system provided in an embodiment of the present invention；
Fig. 2 is the structural block diagram of another intensity of illumination measuring system provided in an embodiment of the present invention；
Fig. 3 is the structural block diagram of optical attenuation module provided in an embodiment of the present invention；
Fig. 4 is a kind of schematic diagram of intensity of illumination measuring device provided in an embodiment of the present invention；
Fig. 5 is a kind of schematic diagram of intensity of illumination measuring device provided in an embodiment of the present invention.
Icon:
10- intensity of illumination measuring system；100- photo-translating system；110- optical attenuation module；111- attenuator；112- electricity
Machine；113- driver；120- optical detection module；121- photomultiplier tube；200- control system；210- controller；220- signal
Processing module；230- memory module；240- display module；241- display sub-module；242- key control submodule；250- power supply
Module；251- supply hub；310- cone；320- through-hole.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.Obviously, described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.It is logical
The component for the embodiment of the present invention being often described and illustrated herein in the accompanying drawings can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that term " in ", "upper", "lower", "horizontal", "inner", "outside" etc. refer to
The orientation or positional relationship shown is to be based on the orientation or positional relationship shown in the drawings or when invention product use usually puts
The orientation or positional relationship put, is merely for convenience of description of the present invention and simplification of the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to limit of the invention
System.In addition, term " first ", " second " etc. are only used for distinguishing description, it is not understood to indicate or imply relative importance.
In addition, the terms such as term "horizontal", "vertical" are not offered as requiring component abswolute level or pendency, but can be slightly
Low dip.It is not to indicate that the structure has been had to if "horizontal" only refers to that its direction is more horizontal with respect to for "vertical"
It is complete horizontal, but can be slightly tilted.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " setting ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected.It can
To be mechanical connection, it is also possible to be electrically connected.It can be directly connected, can also indirectly connected through an intermediary, it can be with
It is the connection inside two elements.For the ordinary skill in the art, it can understand that above-mentioned term exists with concrete condition
Concrete meaning in the present invention.
With reference to the accompanying drawing, it elaborates to some embodiments of the present invention.In the absence of conflict, following
Feature in embodiment and embodiment can be combined with each other.
The embodiment of the present invention provides a kind of intensity of illumination measuring system 10, referring to Fig.1 and 2, Fig. 1 is that the present invention is implemented
A kind of structural block diagram for intensity of illumination measuring system that example provides, Fig. 2 are another intensity of illumination provided in an embodiment of the present invention
The structural block diagram of measuring system.The intensity of illumination measuring system 10 includes: photo-translating system 100 and control system 200；Institute
Stating photo-translating system 100 includes optical attenuation module 110 and optical detection module 120；Wherein, the optical attenuation module 110 is used
Decay in the light to be measured received to the photo-translating system 100；The optical detection module 120 is for receiving described in warp
Decaying light after the decaying of optical attenuation module 110, generates electric signal, by the electric signal transmission to the control system 200；It is described
Control system 200 is used to determine the intensive parameter of the light to be measured according to the electric signal.
Specifically, decaying of the light source to be measured Jing Guo optical attenuation module 110, so that the intensive parameter of itself is according to certain ratio
Example reduce so that its reduction after intensive parameter within the investigative range of optical detection module 120, therefore, optical detection mould
The range for the light source to be measured that block 120 can detect increases.Conversion of the light to be measured Jing Guo optical detection module 120 after decaying, from light
Signal becomes electric signal, and input control system 200 carries out electrical signal data processing, according to certain calculation and decaying
When the ratio that reduces finally calculate the intensive parameter of light to be measured.
In embodiments of the present invention, a kind of intensity of illumination measuring system 10 is declined light source to be measured by optical attenuation module 110
Subtract, allows what optical detection module 120 detected to increase to photometric range, to increase the survey of the intensity of illumination measuring system 10
Measure range.
Optionally, referring to figure 3., Fig. 3 is the structural block diagram of optical attenuation module provided in an embodiment of the present invention, the light decay
Subtract module 110 include at least one attenuator 111, the motor 112 being correspondingly connected with each attenuator 111 and with it is described
The driver 113 that motor 112 is correspondingly connected with；The driver 113 drives for receiving control signal according to the control signal
The motor 112, so that the motor 112 adjusts the attenuator 111 to target position.
Specifically, the embodiment of the present invention can choose two optical density be respectively 4 neutral density attenuator as light decay
Subtract module 110, which is arranged at an angle between light source to be measured and optical detection module 120, uses
Increase in the range for the light source to be measured that decaying light source to be measured enables optical detection module 120 to detect.Each attenuator 111 is equal
It is connected with the driver 113 that a motor 112 and driving motor 112 move, driver 113 is in the arteries and veins for receiving external offer
After punching, driving motor 112 rotates certain angle, so that controlling attenuator 111 turns to angle appropriate, so that attenuator
111 decay light source to be measured.
The position of attenuator 111 is put, in addition to needing the decaying light after making to decay in the investigative range of optical detection module 120
Within, it should also prevent its interference effect to optical path.In embodiments of the present invention, it is obtained by design of Simulation: when first
111 left-handed 15 ° of a attenuator, at second 30 ° of 111 back rotation of attenuator, Effect on Detecting is best.
It should be noted that the embodiment of the present invention is not especially limited the model and quantity of attenuator 111, attenuator
111 can be the neutral density attenuator that optical density is 4, be also possible to the neutral density attenuator of other optical density；Quantity can
To be greater than the arbitrary integer for being equal to one, it should be selected according to the actual situation.The placement position of attenuator 111, Ke Yigen
It is selected according to the result of design of Simulation, attenuator 111 can also be made to carry out suitably according to control signal control driver 113
Movement, so that it is determined that an optimized attenuation state.
In embodiments of the present invention, optical attenuation module 110 is used as using attenuator 111, light source to be measured is passed through
The decaying of attenuator 111 enables optical detection module 120 to detect larger range of light to be measured, while using and attenuator 111
The motor 112 and driver 113 of connection, so that the angle of attenuator 111 is adjustable to arrive suitable position, it is ensured that decay
The decaying light arrived is within the investigative range of optical detection module 120.
Optionally, the control system 200 is also used to generate the control signal according to the electric signal；The driver
113 for receiving the control signal from the control system 200.
Specifically, control system 200 after the electric signal for receiving the output of optical detection module 120, carries out the electric signal
Calculate, judge at this time by optical attenuation module 110 decay decaying light whether also the investigative range of optical detection module 120 it
It is interior, if the position of attenuator 111 does not need to adjust；If not existing, control system 200 exports a control signal to drive
Dynamic device 113, so that driver 113 drives attenuator 111 to be moved to suitable position according to the control signal drive motor 112,
So that optical attenuation module 110 after being adjusted decay after decaying light within the investigative range of optical detection module 120.
It should be noted that the control signal can be the electric signal that control system 200 is exported according to optical detection module 120
It generates, is also possible to what external other equipment provided.For example, photo-translating system 100 can be directly connected to an electricity
On brain, which can generate the position of a control signal control optical attenuation module 110 according to electric signal；It is also possible to
Timing sends a control signal to optical attenuation module 110 and controls 110 shift position of optical attenuation module, and judges detection at this time
Effect, if the decaying light after decaying acquires this detection result within the scope of optical detection module 120, if after decaying
Light decay not within the scope of optical detection module 120, then waits next control signal to the position tune of optical attenuation module 110
It is whole.In addition to this, the position of optical attenuation module 110 can also artificially adjust, until the decaying light after decaying is in optical detection module
Within the scope of 120.
In embodiments of the present invention, one is generated according to the electric signal that optical detection module 120 exports by control system 200
Signal is controlled, the position of attenuator 111 is controlled, to form a feedback mechanism, enables the intensity of illumination measuring system 10
Larger range of light to be measured is enough measured, while reducing the time of adjustment 110 position of optical attenuation module.
Optionally, the optical detection module 120 is photomultiplier tube 121；The decaying light is from the photomultiplier tube 121
Cathode inject, and be converted to electric signal from the anode of the photomultiplier tube 121 export.
Specifically, in embodiments of the present invention, which can use photomultiplier tube 121
(Photomultiplier Tube, PMT) is used as optical detection module 120.Photomultiplier tube 121 is to be converted into faint optical signal
The vacuum electron device of electric signal, when illumination is mapped to photocathode, photocathode excites photoelectrons into vacuum, these photoelectrons
Enter dynode system by focusing electrode electric field, and amplified by the multiplication that further Secondary Emission obtains, then amplified
Electronics is used anode to collect and is exported as signal.Photomultiplier tube 121 has high sensitivity, response quickly, at low cost, cathode area
The advantages that big.
It should be noted that optical detection module 120 is not limited to photomultiplier tube 121, photoelectric tube, interior photoelectricity effect can also be
Answer the photodetectors such as detector, photoconductive detector.
In embodiments of the present invention, optical detection module 120 is used as using photomultiplier tube 121, so that optical detection module 120
To the detection of the light source after decaying sensitivity with higher and faster response speed, it is right to be conducive to intensity of illumination measuring system 10
The measurement of light to be measured.
Optionally, referring to figure 2., the control system 200 includes controller 210, signal processing module 220 and storage
Module 230；The signal processing module 220 is used to receive the electric signal of the anode output of the photomultiplier tube 121, right
The electric signal is handled, will treated electric signal transmission to the controller 210；The controller 210 is used for basis
Described treated that electric signal determines the intensive parameter of the light to be measured, and the intensive parameter of the light to be measured is deposited
It is stored in the memory module 230.
Specifically, the electric signal that photomultiplier tube 121 exports, after the signal processing of signal processing module 220, transmission
To controller 210.Controller 210, according to certain calculation, calculates the intensity ginseng of light to be measured according to the signal received
Number, and the result being calculated is stored in memory module 230.In addition to this, controller 210 can also judge the light to be measured
Whether within the investigative range of optical detection module 120, and optical attenuation module 110 is fed back to according to judging result.It is stored in
The intensive parameter for storing up module 230, can be downloaded and subsequent processing after connecting with external equipment, can also directly pass through
The display module 240 connecting with controller 210 exports.
It should be noted that memory module 230 may include synchronous DRAM (Synchronous
Dynamic Random Access Memory, SDRAM), pass through First Input First Output (First Input First
Output, FIFO) mode control the write-in and reading of data one by one as unit of clock.The specific storage of memory module 230
The mode embodiment of the present invention does not limit specifically, can be adjusted according to the actual situation.
In embodiments of the present invention, the intensive parameter of light source to be measured is calculated by controller 210 and is stored in memory module
In 230, convenient for carrying out subsequent processing using the intensive parameter.
Optionally, the controller 210 is joined according to the intensity of treated electric signal the determines light to be measured
Number, comprising: according to the anode luminous sensitivity S of the photomultiplier tube 121pAnd the anode of the photomultiplier tube 121 is defeated
Electric current I outpThe cathode that the photomultiplier tube 121 is calculated receives luminous flux φv:
Luminous flux φ is received according to the cathode of the photomultiplier tube 121vAnd the yin of the photomultiplier tube 121
The cathode illumination E of the photomultiplier tube 121 is calculated in pole surface unit area Av:
And/or luminous flux φ is received according to the cathode of the photomultiplier tube 121vAnd the photomultiplier tube
121 cathode luminous sensitivity SkThe cathode output electric current I of the photomultiplier tube 121 is calculatedk:
Specifically, controller 210 needs to calculate light to be measured according to certain calculation, in the embodiment of the present invention
In, the intensive parameter that controller 210 calculates may include that the cathode of photomultiplier tube 121 receives luminous flux φv, cathode illumination Ev
And cathode exports electric current Ik.Wherein, the cathode of photomultiplier tube 121 receives luminous flux φvLight as to be measured is according to a certain percentage
Luminous flux after decaying, the cathode illumination E of photomultiplier tube 121vφvAfter light as to be measured is decayed according to a certain percentage
The cathode of illumination, photomultiplier tube 121 exports electric current IkLight as to be measured decay according to a certain percentage after electric current.Therefore,
By calculating these three data, further according to the ratio of decaying, the corresponding data of light to be measured can be calculated.
In embodiments of the present invention, the anode luminous sensitivity S of photomultiplier tube 121pIt is known that photomultiplier tube 121
Anode exports electric current IpAs export electric signal electric current, therefore can by the two data according toCalculate photoelectricity
The cathode of multiplier tube 121 receives luminous flux φv.The cathode for calculating photomultiplier tube 121 receives luminous flux φvAfterwards, photomultiplier transit
The cathode surface unit area of pipe 121 it is known that therefore can by the two data according toCalculate photomultiplier transit
The cathode illumination E of pipe 121v.In addition to this, luminous flux φ is received in the cathode for calculating photomultiplier tube 121vAfterwards, due to photoelectricity
Multiplier tube 121 is that electronics receives photon effect on cathode, the n times side's multiplication amplification for the constantly presentation 2 that is excited, therefore photomultiplier tube
121 cathode receives luminous flux φvAs the anode of photomultiplier tube 121 receives luminous flux φv, and the yin of photomultiplier tube 121
Aurora shine sensitivity SkIt is known that therefore can also by the two data according toCalculate the yin of photomultiplier tube 121
Pole exports electric current Ik。
In embodiments of the present invention, controller 210 receives luminous flux φ by calculating the cathode of photomultiplier tube 121v, electricity
The cathode illumination E of multiplier tube 121vAnd the cathode of photomultiplier tube 121 exports electric current Ik, can be square further according to attenuation ratio
Just the respective intensities parameter for efficiently calculating light to be measured, realizes the measurement of intensity of illumination.
Optionally, the controller 210 determines the intensive parameter of the light to be measured according to the electric signal, also wraps
It includes: electric current I is exported according to the cathode of the photomultiplier tube 121kAnd the cathode radiant spirit of the photomultiplier tube 121
Sensitivity SeThe cathode radiant luminous flux φ of the photomultiplier tube 121 is calculatede:
Specifically, in embodiments of the present invention, the intensive parameter that controller 210 calculates can also include photomultiplier tube
121 cathode radiant luminous flux φe.Wherein, the cathode radiant luminous flux φ of photomultiplier tube 121eLight as to be measured is according to certain
Irradiation luminous flux after ratio decaying exports electric current I in the cathode for calculating photomultiplier tube 121kLater, photoelectricity times
Increase the cathode radiant sensitivity S of pipe 121eIt is known that therefore can by the two data according toCalculate photomultiplier transit
The cathode radiant luminous flux φ of pipe 121e。
Optionally, the signal processing module 220 includes: amplifying circuit and analog to digital conversion circuit；The amplifying circuit
The electric signal that the anode for amplifying the photomultiplier tube 121 exports；Analog-digital conversion circuit as described will be for that will put
Electric signal after big is converted to digital signal, and by the digital data transmission to the controller 210.
Specifically, the electric signal that optical detection module 120 exports, needs after the signal processing of signal processing module 220
In ability input controller 210.In embodiments of the present invention, signal processing module 220 may include that amplifying circuit and modulus turn
Circuit is changed, the electric signal that optical detection module 120 exports passes through the amplification of amplifying circuit, reaches the electricity for meeting certain resolution requirement
After pressure value, analog quantity is sent to low-power consumption, the analog to digital conversion circuit of high-conversion rate is converted into corresponding digital quantity, input control
Device 210 carries out subsequent calculating.
It should be noted that signal processing module 220 is not limited to amplifying circuit and analog to digital conversion circuit, can also filter
Device etc., can be adjusted according to the actual situation.
In embodiments of the present invention, the electric signal that optical detection module 120 exports turns by the amplification of amplifying circuit and modulus
The conversion of circuit is changed, so that controller 210 is more accurate when carrying out subsequent calculating.
Optionally, referring to figure 2., the control system 200 further include: display module 240；The display module 240 wraps
Include display sub-module 241 and key control submodule 242；The display sub-module 241 is used to export the institute of the light to be measured
Intensive parameter is stated, the key control submodule 242 is for controlling the display sub-module 241.
Specifically, be stored in the intensive parameter of memory module 230, can be downloaded after being connect with external equipment and
Subsequent processing can also be exported directly by the display module 240 connecting with controller 210.Wherein, display sub-module 241 can
To include a display screen, which can be light emitting diode (Light Emitting Diode, LED), is also possible to
Liquid crystal display (Liquid Crystal Display, LCD) etc., display screen can export stored in memory module 230 it is strong
Spend parameter.Key submodule 241 may include multiple independent keys, control the output of each intensive parameter, such as light respectively
The variation of illumination, luminous flux, photoelectric current or light radiant flux display pattern.
It should be noted that may also pass through a data noise reduction process algorithm before 240 output data of display module
Software processing so that output data it is more accurate.
In embodiments of the present invention, control system 200 can also include a display module 240, for directly export to
The intensive parameter to be measured of light source is surveyed, convenient for the observation of survey crew.
Optionally, referring to figure 2., the control system 200 further include: power module 250, for entire control system
200 provide power supply.
Optionally, programmable gate array (Field-Programmable at the scene can be set in entire control system 200
Gate Array, FPGA) on.Not only flexibility is high, integrated level is high by FPGA, applied widely, and distinctive hardware programming characteristic is not
But it can be realized the high speed processing of data, and the control measured a wide range of intensity of illumination may be implemented in the ability of its quick response
System, improves the controlling, the speed of service and data-handling capacity of intensity of illumination measuring system 10.
Optionally, the system also includes magazines；It is provided with the attenuator 111 in the magazine and the light is visited
Survey module 120；Described magazine one end opens up through-hole 320, and the light to be measured is injected from the through-hole 320, by the attenuator
The optical detection module 120 is injected after 111 decaying.
Specifically, in order to keep the measurement result of entire intensity of illumination measuring system 10 more accurate, it can be by intensity of illumination
Attenuator 111 and optical detection module 120 in measuring system 10 are put into a magazine.Light source to be measured is from the through-hole on magazine
After being incident upon attenuator 111 in 320, the light after decaying in incident light detecting module 120, avoids other light to survey in magazine
Measure the influence of result.
It should be noted that cone 310 can also be set in optical path in addition to mode provided in an embodiment of the present invention,
Avoid light during transmission by the influence of other light.In addition to attenuator 111 and optical detection module 120, intensity of illumination
Other component in measuring system 10 can also be arranged in magazine simultaneously, can be adjusted according to the actual situation.On magazine
Through-hole 320 can with luminous point electricity multiplier tube 121 talk side size it is identical, convenient for the transmission of light.
In embodiments of the present invention, provided with a magazine for protecting attenuator 111 and optical detection module 120, from
And influence of other light to measurement result is avoided, keep measurement result more accurate.
The embodiment of the invention also provides a kind of specific intensity of illumination measuring devices, referring to figure 4. and Fig. 5, Fig. 4 and figure
5 be a kind of schematic diagram of intensity of illumination measuring device provided in an embodiment of the present invention.The device include two attenuators 111 and
Two motors 112 and driver 113 connecting with attenuator 111, two drivers 113 can uniformly be placed on two decaying
The both ends of piece 111, prevent electromagnetic interference as far as possible.The intensity of illumination measuring device further includes photomultiplier tube 121, controller
210, display sub-module 241, key submodule 241, power module 250 and the power supply for powering to power module 250 are inserted
Hole 251.Intensity of illumination measuring device further includes cone 310 and through-hole 320, is also provided with aperture diaphragm on through-hole 320,
As the threshold for avoiding veiling glare from entering.
In embodiments of the present invention, the intensity of illumination measuring device provided is after mechanical encapsulation, and integrated level is high, volume
It is small, use easy to carry.
In conclusion the present invention provides a kind of intensity of illumination measuring system 10, comprising: photo-translating system 100 and control
System 200 processed；The photo-translating system 100 includes optical attenuation module 110 and optical detection module 120；Wherein, the light decay
Subtract to be measured light of the module 110 for receiving the photo-translating system 100 to decay；The optical detection module 120 is used
In receiving the decaying light after the optical attenuation module 110 decaying, electric signal is generated, by the electric signal transmission to the control
System 200；The control system 200 is used to determine the intensive parameter of the light to be measured according to the electric signal.Pass through the light
Decaying of the attenuation module 110 to the light to be measured makes the strong of the measurable light to be measured of the intensity of illumination measuring system 10
Parameter area is spent to increase.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
Claims (10)
1. a kind of intensity of illumination measuring system characterized by comprising photo-translating system and control system；
The photo-translating system includes optical attenuation module and optical detection module；Wherein,
The optical attenuation module is for decaying to the light to be measured that the photo-translating system receives；
The optical detection module is used to receive the decaying light after optical attenuation module decaying, electric signal is generated, by the electricity
Signal is transmitted to the control system；
The control system is used to determine the intensive parameter of the light to be measured according to the electric signal.
2. intensity of illumination measuring system according to claim 1, which is characterized in that the optical attenuation module includes at least one
A attenuator and each attenuator motor being correspondingly connected with and the driver being correspondingly connected with the motor；
The driver is for receiving control signal, according to the control signal driving motor, so that the motor is by institute
Attenuator is stated to adjust to target position.
3. intensity of illumination measuring system according to claim 2, which is characterized in that the control system is also used to according to institute
It states electric signal and generates the control signal；
The driver is used to receive the control signal from the control system.
4. intensity of illumination measuring system according to claim 1-3, which is characterized in that the optical detection module is
Photomultiplier tube；
The decaying light is injected from the cathode of the photomultiplier tube, and is converted to anode of the electric signal from the photomultiplier tube
Output.
5. intensity of illumination measuring system according to claim 4, which is characterized in that the control system include controller,
Signal processing module and memory module；
The signal processing module is used to receive the electric signal of the anode output of the photomultiplier tube, to the electric signal
Handled, will treated electric signal transmission to the controller；
The controller is used for the intensive parameter according to treated electric signal the determines light to be measured, and will be described
The intensive parameter of light to be measured is stored in the memory module.
6. intensity of illumination measuring system according to claim 5, which is characterized in that after the controller is according to the processing
Electric signal determine the intensive parameter of the light to be measured, comprising:
According to the anode luminous sensitivity S of the photomultiplier tubepAnd the anode of the photomultiplier tube exports electric current IpIt calculates
The cathode for obtaining the photomultiplier tube receives luminous flux φv:
Luminous flux φ is received according to the cathode of the photomultiplier tubevAnd the cathode surface unit of the photomultiplier tube
The cathode illumination E of the photomultiplier tube is calculated in area Av:
And/or
Luminous flux φ is received according to the cathode of the photomultiplier tubevAnd the cathode luminous of the photomultiplier tube is sensitive
Spend SkThe cathode output electric current I of the photomultiplier tube is calculatedk:
7. intensity of illumination measuring system according to claim 6, which is characterized in that the controller is according to the electric signal
Determine the intensive parameter of the light to be measured, further includes:
Electric current I is exported according to the cathode of the photomultiplier tubekAnd the cathode radiant sensitivity S of the photomultiplier tubee
The cathode radiant luminous flux φ of the photomultiplier tube is calculatede:
8. intensity of illumination measuring system according to claim 6, which is characterized in that the signal processing module includes: to put
Big circuit and analog to digital conversion circuit；
The amplifying circuit is used to amplify the electric signal of the anode output of the photomultiplier tube；
Analog-digital conversion circuit as described is used to amplified electric signal being converted to digital signal, and extremely by the digital data transmission
The controller.
9. intensity of illumination measuring system according to claim 6, which is characterized in that the control system further include: display
Module；
The display module includes display sub-module and key control submodule；
The display sub-module is used to export the intensive parameter of the light to be measured, and the key control submodule is for controlling
The display sub-module.
10. intensity of illumination measuring system according to claim 4, which is characterized in that the system also includes: magazine；
The attenuator and the optical detection module are provided in the magazine；
Described magazine one end opens up through-hole, and the light to be measured is injected from the through-hole, injected after the decaying of the attenuator
The optical detection module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811157063.2A CN109115338A (en) | 2018-09-30 | 2018-09-30 | Illumination intensity measuring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811157063.2A CN109115338A (en) | 2018-09-30 | 2018-09-30 | Illumination intensity measuring system |
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| CN2282205Y (en) * | 1996-12-26 | 1998-05-20 | 中国科学院上海光学精密机械研究所 | Same light path continuous automatic adjustable attenuator |
| US20090041477A1 (en) * | 2000-10-13 | 2009-02-12 | Alwan James J | Attenuation systems and methods for use with an optical detector in an optical communication system |
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