CN110017895B - Light source monitoring system - Google Patents
Light source monitoring system Download PDFInfo
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- CN110017895B CN110017895B CN201910231616.2A CN201910231616A CN110017895B CN 110017895 B CN110017895 B CN 110017895B CN 201910231616 A CN201910231616 A CN 201910231616A CN 110017895 B CN110017895 B CN 110017895B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 35
- 238000009792 diffusion process Methods 0.000 claims abstract description 35
- 238000012545 processing Methods 0.000 claims abstract description 14
- 239000004576 sand Substances 0.000 claims description 5
- 239000011324 bead Substances 0.000 claims description 4
- 238000012360 testing method Methods 0.000 abstract description 8
- 238000013461 design Methods 0.000 abstract description 4
- 238000005457 optimization Methods 0.000 abstract description 3
- 238000005286 illumination Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
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
- G01J1/08—Arrangements of light sources specially adapted for photometry standard sources, also using luminescent or radioactive material
-
- 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
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
-
- 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
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/60—Radiation pyrometry, e.g. infrared or optical thermometry using determination of colour temperature
-
- 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
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/60—Radiation pyrometry, e.g. infrared or optical thermometry using determination of colour temperature
- G01J2005/608—Colour temperature of light sources
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Spectrometry And Color Measurement (AREA)
Abstract
The invention discloses a light source monitoring system, which mainly comprises a light source controller, a light source plate connected with the light source controller and a data display device; the light source plate mainly comprises a first structure outer frame, a second structure outer frame, a diffusion plate, a diffusion film and a light guide plate, wherein the diffusion film and the diffusion plate are respectively arranged on two sides of the light guide plate in sequence and are arranged between the first structure outer frame and the second structure outer frame in a central symmetry mode, and a light bar is arranged along the inner edge of the first structure outer frame; the color sensor, the data processing and converting module and the light source controller are sequentially connected. According to the invention, through the compact light source plate design and the color sensor arrangement of the structure optimization, the real-time accurate monitoring of the light source parameters is realized, the problem that the light source monitoring passes the manual test is solved, and the use of a client-side light source measuring instrument is reduced.
Description
Technical Field
The invention relates to the field of optics, in particular to a light source monitoring system.
Background
With the high-speed development of the camera industry, the variety of light sources is more and more diversified, and the requirement for detecting the light sources is also more and more high, so that the detection method also tends to be unmanned and intelligent.
At present, when a customer uses a light source, the customer uses a light source standard instrument to test the parameters of the light source at regular time, the light source parameters tested by the instrument can be used after meeting the requirements of the customer, and meanwhile, the customer needs to monitor the actual values of the light source parameters in real time, and the customer can stop in time after finding out that the light source parameters exceed the standard, so that the reject ratio caused by the light source is avoided. In addition, when the customer detects the light source manually, the customer can be influenced by external environment factors, so that the detection efficiency and accuracy are greatly reduced. Therefore, the existing common light source board has no monitoring function, and is difficult to adapt to the current market demand, and the light source monitoring system can just meet the market demand. However, the current devices are more and more compact, and the technical difficulty of setting the monitoring function in the light source is high, so that the light source change is difficult to spot.
It is therefore desirable to provide a novel light source monitoring system to solve the above-mentioned problems.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a light source monitoring system, which realizes real-time accurate monitoring of light source parameters through the compact light source plate design and the color sensor arrangement of the structure optimization.
In order to solve the technical problems, the invention adopts a technical scheme that: the light source monitoring system mainly comprises a light source controller, a light source plate connected with the light source controller and a data display device;
the light source plate mainly comprises a first structure outer frame, a second structure outer frame, a diffusion plate, a diffusion film and a light guide plate, wherein the diffusion film and the diffusion plate are respectively arranged on two sides of the light guide plate in sequence and are arranged between the first structure outer frame and the second structure outer frame in a central symmetry mode, and a light bar is arranged along the inner edge of the first structure outer frame;
the color sensor, the data processing and converting module and the light source controller are sequentially connected.
In a preferred embodiment of the present invention, the front surface and the back surface of the light guide plate are both dotting surfaces.
In a preferred embodiment of the present invention, the light guide plate is a high purity light guide plate having a thickness of 5 mm.
In a preferred embodiment of the present invention, a surface of the diffusion plate close to the diffusion film is a light surface, and a surface of the diffusion plate far from the diffusion film is a sand surface.
In a preferred embodiment of the present invention, the diffusion plate is a light-sand acrylic plate with a thickness of 3 mm.
In a preferred embodiment of the present invention, the light bar is formed by mixing a plurality of groups of light beads.
In a preferred embodiment of the invention, the color sensor passes through I 2 The C bus is connected with the data processing and converting module, and the data processing and converting module is connected with the light source controller through the RS485 interface.
In a preferred embodiment of the present invention, the data display device includes a nixie tube and a computer.
Furthermore, the nixie tube is connected with the light source controller, and the computer is connected with the light source controller through an RS232 interface.
Furthermore, the light source controller adopts a singlechip.
The beneficial effects of the invention are as follows:
(1) According to the invention, through the compact light source plate design and the setting of the color sensor with optimized structure, the real-time accurate monitoring of the light source parameters is realized, the problem that the light source monitoring passes the manual test is solved, the use of a client-side light source measuring instrument is reduced, the influence of environmental factors when a client points to detect the light source is avoided, the use efficiency and accuracy are improved, and the current market demand is met;
(2) The light source assembly of the light source plate takes the light guide plate as the center, and the upper surface and the lower surface are in a central symmetry mode, so that the parameters of the light emitted by the upper surface and the lower surface of the light source are most tended to be consistent, and the accuracy of monitoring the parameters of the light source is obviously improved;
(3) The light source board is embedded with the miniature color sensor to monitor optical parameters such as color temperature, color coordinates and illumination of the light source in real time, so that the difficulty that the current equipment is more and more compact and the light source is difficult to spot and detect the change of the light source is solved; meanwhile, the color sensor is arranged at the central position of the back surface of the light source, the parameters of the light source used by the customer can be effectively monitored, the monitored parameters of the light source do not deviate from the parameters of the light source used by the customer, the parameters of the light source change and the parameters read by the color sensor are increased or reduced in the same amplitude, and the monitoring effect of the light source is good.
Drawings
FIG. 1 is a block diagram of a preferred embodiment of a light source monitoring system according to the present invention;
fig. 2 is a perspective view of the front surface of the light source panel;
FIG. 3 is a perspective view of the back of the light source panel;
FIG. 4 is an exploded view of FIG. 3;
fig. 5 is a functional block diagram of the light source monitoring system.
The components in the drawings are marked as follows: 1. the light guide plate comprises a first structure outer frame, 2, a second structure outer frame, 3, a diffusion plate, 4, a diffusion film, 5, a light guide plate, 6, a light bar, 7, a color sensor, 8, a data processing and converting module, 9, a cover plate, 10 and a sensor mounting groove.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present invention.
Referring to fig. 1, an embodiment of the present invention includes:
a light source monitoring system mainly comprises a light source controller, a light source plate connected with the light source controller and a data display device. The data display device comprises a nixie tube and a computer, wherein the nixie tube is connected with the light source controller, and the computer is connected with the light source controller through an RS232 interface. The nixie tube is used for displaying light source parameters such as color temperature, color coordinates and illumination in the light source plate, and the computer can be used for clients to monitor the true value of the light source parameters in real time.
Furthermore, the light source controller adopts the SCM STM32F103, so that the light source controller has low power consumption, economy and easy use and good integration performance.
The following describes the structure of a light source board, which is a core part of the system, with reference to fig. 2 to 4:
the light source plate mainly comprises a first structure outer frame 1, a second structure outer frame 2, a diffusion plate 3, a diffusion film 4 and a light guide plate 5. Referring to fig. 2 and 3, the first structural frame 1 and the second structural frame 2 are fixed by a plurality of screws to form a flat plate structure, the front surface of the light source plate is a diffusion plate 3, and the back surface of the light source plate is the second structural frame 2. The lamp strip 6 is arranged along the inner edge of the first structure outer frame 1, and the lamp strip 6 is formed by mutually mixing a plurality of groups of lamp beads.
Referring to fig. 4, two sides of the light guide plate 5 are respectively provided with a diffusion film 4 and a diffusion plate 3 in sequence, and are arranged between the first structural outer frame 1 and the second structural outer frame 2 in a central symmetry mode. The light source assembly of the light source board takes the light guide plate 5 as the center, and the upper surface and the lower surface are in a central symmetry mode, so that the parameters of light emitted by the upper surface and the lower surface of the light source are most tended to be consistent, and the accuracy of monitoring the parameters of the light source is obviously improved.
Preferably, the light guide plate 5 is a high-purity light guide plate with a thickness of 5 mm. The light guide plate 5 adopts a double-sided dotting engraving process, so that light emitted by the light bar 6 is diffused to the surface of the light source through the diffusion plate 3 after being refracted for multiple times, thereby ensuring that the uniformity of the color temperature and the illuminance of the surface of the light source is up to more than 95 percent, greatly saving the loss of raw materials and working hours, improving the overall performance of the light source and greatly improving the manufacturing process of the light source.
Preferably, the diffusion plate 3 is made of acrylic light-sand with the thickness of 3 mm. The surface of the diffusion plate 3 close to the diffusion film 4 is a light surface, and the surface of the diffusion plate far away from the diffusion film 4 is a sand surface. The light surface of the diffusion plate 3 is inwards reflected to play a role in light internal reflection, so that the light yield of the light source is improved, and the attenuation of the light source parameters is slowed down.
The second structure frame 2 internally installs color sensor 7, data processing and conversion module 8, and the outside is equipped with apron 9. The color sensor 7 passes through I 2 The C bus is connected with the data processing and converting module 8, and the data processing and converting module 8 is connected with the light source controller through an RS485 interface. The data processing and converting module 8 mainly comprises a singlechip STM32F103, a 485 chip SN65HVD485EDR and a peripheral circuit. The color sensor 7 is installed at the central position inside the second structural frame 2, where the sensor installation groove 10 is provided, so that the parameters of the customer using the light source can be effectively monitored without affecting the customerAnd (3) using. The customer can monitor the real value of the light source parameter in real time, and can stop in time after the light source parameter is found out to be out of standard, thereby avoiding the reject ratio generated by the light source. In contrast, assuming that the color sensor 7 is installed at other positions of the light source board, such as the corners and the sides of the structure, the monitored parameters of the light source will deviate from the parameters of the light source used by the customer to some extent, and the parameters of the light source change will not increase or decrease in the same extent as the parameters read by the color sensor 7, so the monitoring effect of the light source will be greatly compromised.
Through the compact light source board design of structural optimization and the setting of color sensor 7, realize the real-time accurate control of light source parameter, solved the light source control and passed the problem of manual test, reduced the use of customer end light source measuring instrument, stopped the influence of environmental factor when the customer point examined the light source, improved efficiency and the accuracy of use, satisfied present market demand.
Referring to fig. 5, the color sensor 7 is configured to obtain RGB component values of the light source, the data processing and converting module 8 converts the RGB component values into XYZ coordinate values through a mapping matrix operation, and then arithmetically operates the XYZ coordinate values into color coordinates xy and brightness Lv, and obtains a color temperature T and illuminance Ev through the color coordinates and brightness operation. The data processing and converting module 8 transmits the light source parameters to the controller through the RS485 interface and displays the light source parameters through the nixie tube, and the controller also uploads the light source parameters to the computer through the RS232 interface to realize the real-time monitoring function of the light source. The specific operation process is as follows:
firstly, using a light source controller to adjust the color temperature and the illumination of a light source;
the color temperature and brightness of the light source are then adjusted to (2850 k,3000 lux), and X is obtained by testing with standard instruments 2850 ，Y 2850 ，Z 2850 Obtaining R by a color sensor 2850 ，G 2850 ，B 2850 ；
Then the color temperature and the brightness of the light source are adjusted to (4000 k,3000 lux), and X is obtained by testing by a standard instrument 4000 ，Y 4000 ，Z 4000 Obtaining R by a color sensor 4000 ，G 4000 ，B 4000 ；
Finally, the light is emittedThe brightness of the source color temperature is adjusted to (6000 k,4000 lux), and X is obtained by testing by a standard instrument 6000 ，Y 6000 ，Z 6000 Obtaining R by a color sensor 6000 ，G 6000 ，B 6000 . The calculation formula is as follows:
XYZ calculation formula:
color coordinates and brightness calculation formula:
x＝X/(X+Y+Z)
y＝Y/(X+Y+Z)
Lv＝Y
color temperature and illuminance calculation formula:
CCT＝449.0×n 3 +3525.0×n 2 +6823.3×n+5520.33
n＝(x-Xe)/(Ye-y)
Xe＝0.3320
Ye＝0.1858
Ev＝Lv x π
the light source monitoring system adopts a side light inlet luminous principle. The reflection points near the light on both sides of the light guide plate 5 are slightly offset in circle and distant in pitch, while the reflection points at the middle part of the light guide plate 5 are compact and thick and slightly elliptical. When light enters the light guide plate from four side light sources, one part of the light hits the reflection point and is diffusely reflected to the surface of the light guide plate 5, and the other part of the light directly penetrates the light guide plate 5 to reach the surface. The more the direct light obtained from the light guide plate 5 part close to the light source is stronger, the weaker the distance is; on the other hand, the reflection points near the light source are small and far away, the diffuse reflection is less, and on the contrary, the thick and compact points of the long-distance light source reflect more abundant. After the light is combined in a complex way, the effect that the whole light source plate is bright is achieved. Meanwhile, the lamp strip 6 is designed to be mixed with a plurality of groups of lamp beads, and the automatic calibration of multi-color temperature and multi-illumination can be realized by inputting software into the light source controller, so that the light source monitoring system is more intelligent, is compatible with various color temperatures, can not only meet the multi-aspect test of customers, but also reduce the input cost of the customers, and improves the use efficiency of the customers.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.
Claims (10)
1. The light source monitoring system is characterized by mainly comprising a light source controller, a light source plate connected with the light source controller and a data display device;
the light source plate mainly comprises a first structure outer frame, a second structure outer frame, a diffusion plate, a diffusion film and a light guide plate, wherein the diffusion film and the diffusion plate are respectively arranged on two sides of the light guide plate in sequence and are arranged between the first structure outer frame and the second structure outer frame in a central symmetry mode, and a light bar is arranged along the inner edge of the first structure outer frame;
the color sensor, the data processing and converting module and the light source controller are sequentially connected.
2. The light source monitoring system of claim 1, wherein the front and back surfaces of the light guide plate are dotting surfaces.
3. The light source monitoring system of claim 1, wherein the light guide plate is a 5mm thick high purity light guide plate.
4. The light source monitoring system of claim 1, wherein a surface of the diffusion plate adjacent to the diffusion film is a light surface, and a surface of the diffusion plate distant from the diffusion film is a sand surface.
5. The light source monitoring system of claim 1, wherein the diffuser plate is a 3mm thick photo-acrylic.
6. The light source monitoring system of claim 1 wherein the light bar is formed from a plurality of groups of light beads intermixed.
7. A light source monitoring system as recited in claim 1, wherein the color sensor is configured to detect a color of the light source by I 2 The C bus is connected with the data processing and converting module, and the data processing and converting module is connected with the light source controller through the RS485 interface.
8. The light source monitoring system of claim 1, wherein the data display device comprises a nixie tube or a computer.
9. The light source monitoring system of claim 8, wherein the nixie tube is connected to a light source controller, and the computer is connected to the light source controller via an RS232 interface.
10. A light source monitoring system according to claim 1, 7 or 9, wherein the light source controller employs a single chip microcomputer.
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112599072A (en) * | 2019-09-18 | 2021-04-02 | 群燿光学股份有限公司 | Light color change area display system and display method thereof |
| CN113422852A (en) * | 2021-06-22 | 2021-09-21 | 广州市稀码通电子有限公司 | Multi-point acquisition system for mobile phone camera to compare with light source |
| CN113432841A (en) * | 2021-06-22 | 2021-09-24 | 广州市稀码通电子有限公司 | External collector for mobile phone camera contrast light source |
| CN113739122A (en) * | 2021-09-09 | 2021-12-03 | 深圳市信诺诚电子科技有限公司 | Intelligent light source for monitoring color temperature and illumination reference number in real time |
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