CN108548099B - A kind of LED lighting system and its modulation method and application - Google Patents
A kind of LED lighting system and its modulation method and application Download PDFInfo
- Publication number
- CN108548099B CN108548099B CN201810373852.3A CN201810373852A CN108548099B CN 108548099 B CN108548099 B CN 108548099B CN 201810373852 A CN201810373852 A CN 201810373852A CN 108548099 B CN108548099 B CN 108548099B
- Authority
- CN
- China
- Prior art keywords
- power supply
- light source
- controllable power
- led
- refrigeration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/20—Light sources comprising attachment means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/54—Cooling arrangements using thermoelectric means, e.g. Peltier elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/40—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters with provision for controlling spectral properties, e.g. colour, or intensity
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
An LED illumination system, a modulation method and the application thereof relate to the technical field of light source equipment, and solve the problem of inaccurate and unstable LED illumination, and the device comprises: the LED light source heat dissipation device comprises an external control device, a replaceable first LED light source, a replaceable second LED light source, a first refrigerator and a second refrigerator which are used for heat dissipation of the LED light source, a controllable power supply for outputting the first light source, a controllable power supply for first refrigeration, a controllable power supply for the second light source and a controllable power supply for second refrigeration, wherein the controllable power supply for the first light source, the controllable power supply for first refrigeration, the controllable power supply for the second light source and the. The device can be used for transient data detection experiments or photocatalytic experiments of solar cells, is convenient to operate, and saves the cost of experimental equipment. An LED illumination system has a corresponding modulation method, an external control device modulates according to a feedback temperature signal and a feedback light intensity signal, and the operation is simple. The spectrum of the first LED light source and the spectrum of the second LED light source move little, and light intensity signals irradiated to the sample table are accurate and stable. The illumination system is convenient to use and wide in application range.
Description
Technical Field
The invention relates to the technical field of light source equipment, in particular to an LED illumination system and a modulation method and application thereof.
Background
In the current optical energy conversion and utilization experiment, different wave bands and different intensities of illumination are often required to be applied to a sample to simulate the illumination environment required by the experiment or process the experimental sample. However, the existing LED illumination device generates heat to move its light spectrum, the actual light intensity at the position of the sample is not easy to be measured accurately, the LED light source of the LED illumination device cannot be replaced at any time as required, and is not convenient to maintain, and these adverse conditions cannot meet the accurate and stable illumination conditions required by the current scientific research experiment. Moreover, an existing experimental device can only correspond to one type of experiment, and one experimental device needs a plurality of devices to cooperate together, so that the operation is complex and the price of the machine is high.
Disclosure of Invention
In order to solve the above problems, the present invention provides an LED illumination system, a modulation method thereof, and a use thereof.
The technical scheme adopted by the invention for solving the technical problem is as follows:
an LED illumination system, the system comprising:
a box body;
an external control device disposed outside the case;
the controllable power supply for the first light source, the controllable power supply for the first refrigeration, the controllable power supply for the second light source and the controllable power supply for the second refrigeration are connected with the external control device;
the first LED light source is connected with the controllable power supply for the first light source;
the first refrigerator is connected with the first refrigeration controllable power supply and used for radiating the first LED light source;
the second LED light source is connected with the controllable power supply for the second light source;
the second refrigerator is connected with the second controllable power supply for refrigeration and used for radiating the second LED light source;
the first temperature sensor is used for detecting the temperature of the first LED light source to obtain a first temperature signal and sending the first temperature signal to an external control device;
the second temperature sensor is used for detecting the temperature of the second LED light source to obtain a second temperature signal and sending the second temperature signal to the external control device;
the constant voltage power supply is connected with the first temperature sensor and the second temperature sensor;
the light-gathering optical fiber is provided with two input ports and an output port, the two input ports correspond to the first LED light source and the second LED light source one by one, and light emitted by the first LED light source and the second LED light source is incident to the corresponding input ports;
the sample test bench corresponds to the output port, and the output light of the output port irradiates on the sample test bench;
the light intensity detector is used for detecting the light intensity on the sample test board to obtain a light intensity signal and sending the light intensity signal to an external control device;
the external control device is used for receiving the first temperature signal, the second temperature signal and the light intensity signal, controlling the output power of the controllable power supply for the first light source, the controllable power supply for the second light source, the controllable power supply for the first refrigeration and the controllable power supply for the second refrigeration, and setting the output modes of the controllable power supply for the first light source and the controllable power supply for the second light source;
the controllable power supply for the first light source, the first refrigerator, the controllable power supply for the first refrigeration, the controllable power supply for the second light source, the second refrigerator, the controllable power supply for the second refrigeration, the first temperature sensor, the second temperature sensor, the constant-voltage power supply, the condensing optical fiber, the sample test board and the light intensity detector are all positioned in the box body; the first LED light source and the second LED light source are detachably arranged in the box body.
The modulation method based on the LED illumination system comprises the following steps:
s1, turning on a first LED light source, a second LED light source, an external control device, a controllable power supply for the first light source, a controllable power supply for the second light source, a first refrigerator, a controllable power supply for first refrigeration, a second refrigerator, a controllable power supply for second refrigeration, a first temperature sensor, a second temperature sensor, a constant voltage power supply and a light intensity detector;
s2, setting initial output power of the controllable power supply for the first light source, the controllable power supply for the second light source, the controllable power supply for the first refrigeration and the controllable power supply for the second refrigeration through the external control device according to experimental requirements, and setting output modes of the controllable power supply for the first light source and the controllable power supply for the second light source through the external control device;
s3, the external control device compares the received first temperature signal, the second temperature signal and the light intensity signal with parameters of experimental requirements, and judges whether the experimental requirements are all met; if so, completing modulation, otherwise, performing S4;
s4, according to S3, the external control device modulates the output power of the first light source controllable power supply, the second light source controllable power supply, the first cooling controllable power supply and the second cooling controllable power supply, and repeats S3.
An application of an LED illumination system in a photocatalysis experiment or a transient data detection experiment of a solar cell.
The invention has the beneficial effects that:
1. according to the invention, the first and second LED light sources are subjected to real-time heat dissipation through the first and second refrigerators according to the first and second temperature signals, the spectral movement of the first and second LED light sources is small, and the measured light intensity signal is accurate and stable.
2. The external control device can control the output power of the controllable power supply for the first light source, the controllable power supply for the second light source, the controllable power supply for the first refrigeration and the controllable power supply for the second refrigeration, and provides accurate and stable illumination conditions for experiments.
3. The first LED light source and the second LED light source are detachably arranged in the box body, the light source with the required wavelength is replaced according to the experiment requirement, the use is convenient, the application range is wide, and the cost of experiment equipment is saved.
4. The light emitted by the first LED light source and the light emitted by the second LED light source are fused and converged by the light-gathering optical fiber and transmitted to the sample test board, so that the loss in the transmission process is reduced.
5. The external control device can set the output modes of the controllable power supply for the first light source and the controllable power supply for the second light source, so that the LED illumination system is not only suitable for one type of experiment, but also can be used for transient data detection experiments or photocatalytic experiments of the solar cell, and the transient data detection experiments or photocatalytic experiments of the solar cell are convenient to operate.
6. The modulation method of the LED illumination system is simple and practical to operate.
Drawings
Fig. 1 is a connection diagram of an LED lighting system according to the present invention.
Fig. 2 is a structural diagram of a light-condensing optical fiber of an LED illumination system according to the present invention.
Fig. 3 is a box structure diagram of an LED illumination system of the present invention.
Fig. 4 is a flow chart of a method for using the LED illumination system of the present invention.
In the figure: 1. the external control device comprises an external control device 2, a controllable power supply for a first light source, 3, a controllable power supply for a second light source, 4, a first LED light source, 5, a second LED light source, 6, a light intensity detector, 7, a first temperature sensor, 8, a second temperature sensor, 9, a constant voltage power supply, 10, a first refrigerator, 11, a second refrigerator, 12, a controllable power supply for first refrigeration, 13, a controllable power supply for second refrigeration, 14, a first heat pipe, 15, a second heat pipe, 16, a first fan, 17, a second fan, 18, a sample test board, 19, a condensing optical fiber, 20 and a box body.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
An LED illumination system comprises an external control device 1, a first LED light source 4, a controllable power supply 2 for the first light source, a first refrigerator 10, a controllable power supply 12 for first refrigeration, a first heat pipe 14, a first fan 16, a first temperature sensor 7, a second LED light source 5, a controllable power supply 3 for the second light source, a second refrigerator 11, a controllable power supply 13 for second refrigeration, a second heat pipe 15, a second fan 17, a second temperature sensor 8, a constant voltage power supply 9, a light-gathering optical fiber 19, a sample test board 18, a light intensity detector 6 and a box body 20. The first heat pipe 14, the first fan 16, the second heat pipe 15 and the second fan 17 are preferred components of an LED illumination system.
The "LED light source" or "two LED light sources" mentioned below both denote a first LED light source 4 and a second LED light source 5.
As shown in fig. 2, the condensing optical fiber 19 is a Y-shaped optical fiber, and has two input ports at the upper end and one output port at the lower end. The two input ports respectively correspond to the first LED light source 4 and the second LED light source 5, and the light-gathering optical fiber 19 is used for fusing and gathering the light emitted by the first LED light source 4 and the second LED light source 5. The light emitted by the first LED light source 4 and the second LED light source 5 respectively enters the two input ports, is fused and converged by the light-gathering optical fiber 19, and is output from the output port.
The connection relationship of the devices is shown in fig. 1, fig. 3 is a schematic view of a box 20 used in the present invention, and the connection and position relationship of an LED illumination system will be described with reference to fig. 1 and fig. 3:
the external control device 1 is disposed outside the casing 20.
A partition board is arranged in the box body 20, the box body 20 is divided into an upper layer and a lower layer, a hole is formed in the partition board and used for enabling the light-gathering optical fiber 19 to penetrate through, and one part of the light-gathering optical fiber 19 is located on the upper layer of the box body 20 while the other part of the light-gathering optical fiber 19 is located on the lower layer of the box body.
The first LED light source 4, the first light source controllable power supply 2, the first refrigerator 10, the first temperature sensor 7, the first refrigeration controllable power supply 12, the first heat pipe 14, the first fan 16, the second LED light source 5, the second light source controllable power supply 3, the second refrigerator 11 and the second temperature sensor 8 are reasonably arranged on the upper layer inside the box body 20 according to the connection shown in the figure 1. The method specifically comprises the following steps: the first LED light source 4 is arranged at one input port of the light-gathering optical fiber 19, the light emitted by the first LED light source 4 is incident to the corresponding input port, the first LED light source 4 is connected with the controllable power supply 2 for the first light source, and the controllable power supply 2 for the first light source is connected with the external control device 1. A first refrigerator 10 and a first temperature sensor 7 are arranged near the first LED light source 4, and the first refrigerator 10, the first heat pipe 14 and the first fan 16 are sequentially in contact stacking; the first refrigerator 10 is connected with a first controllable power source 12 for refrigeration, the first controllable power source 12 for refrigeration is connected with an external control device 1, the first temperature sensor 7 is connected with the external control device 1, the connection mode of the first temperature sensor 7 and the first LED light source 4 is contact connection or non-contact connection, the first temperature sensor 7 in non-contact connection is selected in the embodiment, and a dotted line between the first LED light source 4 and the first temperature sensor 7 in fig. 1 represents temperature measurement (namely detection) of the first temperature sensor 7 on the first LED light source 4 to obtain a first temperature signal. The other input port of the condensing optical fiber 19 is provided with a second LED light source 5, the light emitted by the second LED light source 5 is incident to the corresponding input port, the second LED light source 5 is connected with a controllable power supply 3 for the second light source, and the controllable power supply 3 for the second light source is connected with the external control device 1. A second refrigerator 11 and a second temperature sensor 8 are arranged near the second LED light source 5, and the second refrigerator 11, the second heat pipe 15 and the second fan 17 are sequentially in contact stacking; the second refrigerator 11 is connected with a second controllable power supply 13 for refrigeration, the second controllable power supply 13 for refrigeration is connected with the external control device 1, the second temperature sensor 8 is connected with the external control device 1, the connection mode of the second temperature sensor 8 and the second LED light source 5 is contact connection or non-contact connection, the second temperature sensor 8 in non-contact connection is selected in the embodiment, and a dotted line between the second LED light source 5 and the second temperature sensor 8 in fig. 1 represents temperature measurement of the second LED light source 5 by the second temperature sensor 8 to obtain a second temperature signal. The constant voltage power supply 9 is connected to the first fan 16, the first temperature sensor 7, the second fan 17, and the second temperature sensor 8 as its power supply means.
The sample test bench 18 and the light intensity detector 6 are arranged on the lower layer inside the box body 20, the sample test bench 18 and the light intensity detector 6 are arranged below the condensing optical fiber 19 in specific placement positions, namely corresponding to the output port of the condensing optical fiber 19, the output light of the output port can irradiate on the sample test bench 18, and the distance between the sample test bench 18 and the output port of the condensing optical fiber 19 can be flexibly adjusted according to experiment requirements. The light intensity detector 6 is connected with the external control device 1.
The external control device 1 is capable of setting the initial output power of the controllable power supply 2 for the first light source and modulating the output power of the controllable power supply 2 for the first light source, thereby setting and modulating the power of the output light of the first LED light source 4, i.e. the external control device 1 is capable of controlling the output powers of the controllable power supply 2 for the first light source and the controllable power supply 12 for the first refrigeration; the external control device 1 is capable of setting the initial output power of the controllable power supply 3 for the second light source and modulating the output power of the controllable power supply 3 for the second light source, thereby setting and modulating the power of the output light of the second LED light source 5, i.e. the external control device 1 is capable of controlling the output power of the controllable power supply 3 for the second light source and the controllable power supply 13 for the second cooling. The external control device 1 sets output modes of the first light source controllable power source 2 and the second light source controllable power source 3, the output modes include continuous output and pulse output (namely, a pulse control function is provided), the output mode of the first light source controllable power source 2 can be set to enable output light of the first LED light source 4 to be pulse light, and the output mode of the second light source controllable power source 3 is set to enable output light of the second LED light source 5 to be pulse light, and the output modes can be continuous output light. The first refrigerator 10 is used for heat dissipation of the first LED light source 4, and the first temperature sensor 7 detects the temperature of the first LED light source 4 to obtain a first temperature signal and sends the first temperature signal to the external control device 1; the external control device 1 receives the first temperature signal sent by the first temperature sensor 7, modulates the output power of the first refrigeration controllable power supply 12 according to the received first temperature signal, and further modulates the working power (i.e. refrigeration effect) of the first refrigerator 10, that is, modulates the temperature of the first LED light source 4. The first heat pipe 14 is used for dissipating heat generated by the operation of the first refrigerator 10 (i.e., expanding the heat dissipation surface), and the first fan 16 is operated to dissipate heat from the first heat pipe 14. The second refrigerator 11 is used for heat dissipation of the second LED light source 5, and the second temperature sensor 8 detects the temperature of the second LED light source 5 to obtain a second temperature signal and sends the second temperature signal to the external control device 1; the external control device 1 receives the second temperature signal sent by the second temperature sensor 8, modulates the output power of the second controllable power supply 13 for cooling according to the received second temperature signal, and further modulates the working power (i.e. cooling effect) of the second refrigerator 11, that is, modulates the temperature of the second LED light source 5. The second heat pipe 15 is used for dissipating heat generated by the operation of the second refrigerator 11 (expanding a heat dissipating surface), and the second fan 17 is operated to dissipate heat from the second heat pipe 15. The constant voltage power supply 9 can supply two power supply voltages of 24V and 15V, 24V as power supplies for the first fan 16 and the second fan 17, and 15V as power supplies for the first temperature sensor 7 and the second temperature sensor 8. The light-gathering optical fiber 19 is used for fusing and gathering the light emitted by the first LED light source 4 and the light emitted by the second LED light source 5, the light emitted by the two LED light sources is gathered together more conveniently by using the light-gathering optical fiber 19, and the loss of light intensity in the transmission process is reduced. The light intensity detector 6 is used for detecting the light intensity irradiated to the sample test platform 18, the light intensity detector 6 is placed at the same height or the height close to the sample test platform 18 and is close to the sample test platform 18, in order to ensure that the light intensity detected by the light intensity detector 6 is equal to the light intensity of the light irradiated to the sample test platform 18, namely the detection precision of the light intensity detector 6 is ensured, so that the light intensity detector 6 and the sample test platform 18 have the same height and are in contact arrangement, and the detection precision of the light intensity detector 6 is the highest. The light intensity detector 6 detects the light intensity of the sample test platform 18 and sends a light intensity signal to the external control device 1, and the external control device 1 receives the light intensity signal and compares the requirements (experimental requirements) of the sample in the experiment according to the received light intensity signal to modulate the output power of the controllable power supply 2 for the first light source and the controllable power supply 3 for the second light source.
In summary, the external control device 1 is used for receiving the first temperature signal, the second temperature signal and the light intensity signal, and the external control device 1 is further used for controlling the output power of the controllable power supply 2 for the first light source, the controllable power supply 3 for the second light source, the controllable power supply 12 for the first refrigeration and the controllable power supply 13 for the second refrigeration, and specifically is: the external control device 1 is used for setting the initial output power of the first light source controllable power supply 2, the second light source controllable power supply 3, the first refrigeration controllable power supply 12 and the second refrigeration controllable power supply 13; the external control device 1 can receive a first temperature signal sent by the first temperature sensor 7, a second temperature signal sent by the second temperature sensor 8 and a light intensity signal sent by the light intensity detector 6; and, based on the received signals, to the controllable power supply 2 for the first light source, the controllable power supply 3 for the second light source, the first refrigeration controllable power supply 12 and the second refrigeration controllable power supply 13 are further modulated (the external control device 1 modulates the output power of the first refrigeration controllable power supply 12 according to the first temperature signal, modulates the output power of the second refrigeration controllable power supply 13 according to the second temperature signal, and modulates the output powers of the first light source controllable power supply 2 and the second light source controllable power supply 3 according to the light intensity signal; in addition, the external control device 1 may modulate the first light source controllable power supply 2, modulates the output power of the second light source controllable power supply 3, modulates the first light source controllable power supply 2 and modulates the second light source controllable power supply 3 according to the first temperature signal, the second temperature signal and the light intensity signal) to obtain the output light required by the experiment. The output modes of the controllable power supply 2 for the first light source and the controllable power supply 3 for the second light source, i.e. whether or not they are pulsed outputs, can be set by means of the external control device 1. The external control device 1 controls whether the first LED light source 4 and the second LED light source 5 output light, the light intensity of the output light and whether the output light is pulse light; the external control device 1 controls whether or not the first cooling controllable power supply 12 and the second cooling controllable power supply 13 output and output power. The external control device 15 selects a computer and programs the functions through LabVIEW.
③ the ③ first ③ LED ③ light ③ source ③ 4 ③ and ③ the ③ second ③ LED ③ light ③ source ③ 5 ③ are ③ collectively ③ called ③ as ③ LED ③ light ③ sources ③, ③ the ③ LED ③ light ③ sources ③ can ③ be ③ LED ③ light ③ sources ③ with ③ wave ③ bands ③ of ③ 405 ③ nm ③ ultraviolet ③, ③ blue ③ light ③, ③ white ③ light ③, ③ red ③ light ③, ③ green ③ light ③ and ③ the ③ like ③, ③ the ③ first ③ LED ③ light ③ source ③ 4 ③ and ③ the ③ second ③ LED ③ light ③ source ③ 5 ③ can ③ be ③ both ③ ultraviolet ③ LEDs ③, ③ blue ③ light ③ LEDs ③, ③ white ③ light ③ LEDs ③, ③ red ③ light ③ LEDs ③ or ③ green ③ light ③ LEDs ③, ③ the ③ first ③ LED ③ light ③ source ③ 4 ③ and ③ the ③ second ③ LED ③ light ③ source ③ 5 ③ can ③ be ③ replaced ③ independently ③ by ③ ① ③, ③ the ③ first ③ LED ③ light ③ source ③ 4 ③ and ③ the ③ second ③ LED ③ light ③ source ③ 5 ③ are ③ replaced ③ together ③, ③ the ③ first ③ LED ③ light ③ source ③ 4 ③ and ③ the ③ second ③ LED ③ light ③ source ③ 5 ③ are ③ of ③ an ③ integrated ③ structure ③ and ③ are ③ convenient ③ to ③ replace ③, ③ the ③ first ③ LED ③ light ③ source ③ 4 ③, ③ the ③ first ③ refrigeration ③ controllable ③ power ③ source ③ 12 ③ and ③ the ③ first ③ refrigerator ③ 10 ③ are ③ replaced ③ integrally ③, ③ the ③ second ③ LED ③ light ③ source ③ 5 ③, ③ the ③ second ③ refrigeration ③ controllable ③ power ③ source ③ 13 ③ and ③ the ③ second ③ refrigerator ③ 11 ③ are ③ replaced ③ integrally ③, ③ the ③ first ③ LED ③ light ③ source ③ 4 ③, ③ the ③ first ③ refrigeration ③ controllable ③ power ③ source ③ 12 ③, ③ the ③ first ③ LED ③ light ③ source ③ 10 ③, ③ the ③ second ③ LED ③ light ③ source ③ 5 ③, ③ the ③ second ③ refrigeration ③ controllable ③ power ③ source ③ 13 ③ and ③ the ③ second ③ refrigerator ③ 11 ③ are ③ replaced ③ integrally ③, ③ the ③ first ③ LED ③ light ③ source ③ 4 ③, ③ the ③ second ③ refrigeration ③ controllable ③ power ③ source ③ 13 ③, ③ the ③ second ③ LED ③ light ③ source ③ 13 ③ and ③ the ③ refrigerator ③ 11 ③ can ③ be ③ replaced ③ integrally ③, ③ the ③ refrigerator ③ 11 ③, ③ the ③ first ③ LED ③ light ③ source ③ and ③ the ③ second ③ LED ③ light ③ source ③ can ③ be ③ replaced ③ integrally ③, ③ the ③ temperature ③ sensor ③ can ③ be ③ controlled ③ by ③ a ③ single ③ - ③ temperature ③ sensor ③ (③ the ③ LED ③ light ③ source ③, ③ the ③ LED ③ light ③ source ③ can ③ be ③ controlled ③ by ③ a ③ single ③ - ③ light ③ source ③ and ③ the ③ LED ③ light ③ source ③ can ③ be ③ controlled ③ by ③ a ③ single ③. ③
The light-gathering optical fiber 19 can be a quartz optical fiber or a liquid optical fiber, the light-gathering optical fiber 19 is fixed in the box body 20, and the transmission effect of the fixed light-gathering optical fiber 19 is more stable. The case 20 is made of metal. The first refrigerator 10 and the second refrigerator 11 each employ a semiconductor refrigerator.
A modulation method of an LED illumination system is used, which enables the LED to achieve accurate and stable illumination, and the specific modulation steps are shown in FIG. 4.
S1, determining that the light irradiated to the sample test board 18 is only the light emitted by the first LED light source 4 and the second LED light source 5 when the box 20 is closed, and turning on the first LED light source 4, the second LED light source 5, the external control device 1, the first light source controllable power supply 2, the second light source controllable power supply 3, the first refrigerator 10, the first refrigeration controllable power supply 12, the first fan 16, the second refrigerator 11, the second refrigeration controllable power supply 13, the second fan 17, the first temperature sensor 7, the second temperature sensor 8, the constant voltage power supply 9, and the light intensity detector 6 by the operator. I.e. when all electrical components are switched on. Corresponding to "power on" of fig. 4. S1 turning on all electrical components, the first temperature sensor 7 starts to send the first temperature signal and the external control device 1 starts to receive, the second temperature sensor 8 starts to send the second temperature signal and the external control device 1 starts to receive, and the light intensity detector 6 starts to send the light intensity signal and the external control device 1 starts to receive
S2, an operator manually sets the initial output power of the controllable power supply 2 for the first light source, the controllable power supply 3 for the second light source, the controllable power supply 12 for the first refrigeration and the controllable power supply 13 for the second refrigeration through the external control device 1 according to experimental requirements, and simultaneously manually sets the output modes of the controllable power supply 2 for the first light source and the controllable power supply 3 for the second light source through the external control device 1, namely continuous output or pulse output is selected. The "initial output is set corresponding to the external control device 1" of fig. 4.
S3, the external control device 1 compares the received first temperature signal, the second temperature signal and the light intensity signal with parameters of experimental requirements, and judges whether the experimental requirements are all met; if yes (meeting the experimental requirements), modulation is completed, otherwise (not meeting the experimental requirements), S4 is performed. Corresponding to "judge whether the first temperature signal, the second temperature signal and the light intensity signal meet the experimental requirements", "yes", "complete modulation" and "no" in fig. 4.
An operator compares a first temperature signal sent by the first temperature sensor 7 and received by the external control device 1 with a parameter (a first temperature of an experimental requirement) meeting the experimental requirement, and judges whether the experimental requirement is met; the operator compares the second temperature signal sent by the second temperature sensor 8 and received by the external control device 1 with the parameter (the second temperature of the experimental requirement) meeting the experimental requirement, and judges whether the experimental requirement is met; an operator compares the light intensity signal of the light intensity detector 6 received by the external control device 1 with a parameter of an experimental requirement (light intensity of the experimental requirement), and judges whether the experimental requirement is met; if yes, modulation is finished; otherwise, S4 is performed.
S4, based on the determination result of S3, the operator manually modulates the output powers of the first light source controllable power supply 2, the second light source controllable power supply 3, the first cooling controllable power supply 12, and the second cooling controllable power supply 13 by the external control device 1 (pointing computer), and repeats S3. Specifically, the information of no at S3 is provided, and the operator manually controls the external control device 1 to control the output power of the corresponding power supply, and S3 is repeated. Corresponding to the "modulated output power" of fig. 4.
Because the light spectrum of the LED light source is shifted due to the heat generated by the LED light source, one or two of the first temperature signal, the second temperature signal, and the light intensity signal may not meet the parameters of the experimental requirements, and the output powers of the first controllable power source for light source 2, the second controllable power source for light source 3, the first controllable power source for refrigeration 12, and the second controllable power source for refrigeration 13 may need to be modulated at the same time.
Before performing S1 or after completing the preparation of S3, a step of placing the sample to be tested on the sample test stand 18 is further included. If the step is before S1, namely, the sample to be tested is placed on the sample test platform 18, the door of the box body 20 is closed, and then S1 is performed; if the modulation is finished in S3, that is, the modulation is finished, all the electrical components are closed, the door of the box 20 is opened, the sample to be tested is placed on the sample test platform 18, the door of the box 20 is closed, all the electrical components are opened, and the sample to be tested starts to be irradiated.
S3, modulation is completed, and the LED illumination system obtains output light meeting the experiment requirement, so that the LED illumination experiment can be carried out.
The "operator", "manual" or "operator manual" in S1 to S4 may be automatic.
The LED illumination system is applied to transient data detection experiments and photocatalysis experiments of solar cells. The method is applied to transient data detection of the solar cell, such as open-circuit voltage attenuation test, short-circuit current attenuation test and the like, and the method comprises the following steps: one of the two light sources can be used as background light (the background light is usually white light), the other light source can be used as disturbance light (the disturbance light is usually red light or green light), the background light is continuously irradiated, and the disturbance light is irradiated by pulse light according to the frequency emitted by the pulse signal. If the first LED light source 4 is used as the background light and the second LED light source 5 is used as the disturbance light, the output mode of the controllable power supply 2 for the first light source is set to be the continuous output and the output mode of the controllable power supply 3 for the second light source is set to be the pulse output in S2. The sample to be tested, i.e., the solar cell to be tested, is placed on the sample test platform 18, and the corresponding electrical testing device is connected to the electrodes at the two ends of the solar cell to be tested. And testing the attenuation curve of the open-circuit voltage or the short-circuit current of the solar cell to be tested through the common irradiation of the background light and the disturbance light. The LED illumination system is applied to a photocatalysis experiment: in the field of photocatalytic testing, it is often necessary to determine the photocatalytic ability of a catalytic material under the irradiation of light of different spectra, and we often place a photocatalytic sealed reactor (containing an organic atmosphere and a corresponding photocatalytic material) on a sample testing table 18, apply an experimental light source (for example, a mixed light of blue light and purple light or a mixed light of red light and green light, etc.) to the reactor, and detect the change of the organic atmosphere in the reactor by using a gas chromatograph along with the progress of the photocatalytic reaction, thereby testing the catalytic ability of the corresponding photocatalytic material. That is, the first LED light source 4 and the second LED light source 5 are blue light and violet light, respectively, or red light and green light, respectively, and the set output modes in S2 are both continuous outputs.
The LED light source can be replaced, the light source with the required wavelength can be replaced according to the experiment requirement, the LED light source can be used for multiple purposes, and the cost of experiment equipment is saved. The output modes of the controllable power supply 2 for the first light source and the controllable power supply 3 for the second light source are set by replacing the LED light source and the external control device 1, so that the LED illumination system is not only suitable for one type of experiment, but also can be used for transient data detection experiments or photocatalytic experiments of solar cells, the transient data detection experiments or photocatalytic experiments of the solar cells are convenient to operate, the application range of the LED illumination system is wide, and the cost of experimental equipment is saved. The intensity and stability of the light irradiating the sample can be controlled by the external control device 1, so that the invention can be used as an experimental light source to provide the sample with the polychromatic light required by the experiment, which is very accurate and stable. The external control device 1 can control the output power of the first light source controllable power supply 2, the second light source controllable power supply 3, the first refrigeration controllable power supply 12 and the second refrigeration controllable power supply 13, and provides accurate and stable illumination conditions for experiments. The first and second LED light sources 4 and 5 are radiated in real time through the first and second refrigerators 10 and 11 according to the first and second temperature signals, the spectrum movement of the first and second LED light sources 4 and 5 is small, and the measured light intensity signal is accurate and stable. The light emitted by the LED light source is transmitted to the sample test bench 18 by adopting the light-gathering optical fiber 19, so that the loss in the transmission process is reduced; the light emitted by the two LED light sources is irradiated on the sample at a fixed angle, so that the experiment precision is improved. The light intensity detector 6 and the sample test bench 18 are arranged in a high-altitude and contact mode, detection accuracy of the light intensity detector 6 is guaranteed to be the highest, accuracy of an illumination experiment is improved, and experiment accuracy is guaranteed. The other modulation method of the LED illumination system is simple and practical to operate. The LED lamp is suitable for being widely applied to any experimental field needing LED illumination.
Claims (10)
1. An LED illumination system, characterized in that the system comprises:
a case (20);
an external control device (1) disposed outside the case (20);
a controllable power supply (2) for a first light source, a controllable power supply (12) for first refrigeration, a controllable power supply (3) for a second light source and a controllable power supply (13) for second refrigeration which are connected with the external control device (1);
a first LED light source (4) connected to the first light source controllable power supply (2);
the first refrigerator (10) is connected with the first controllable power supply (12) for refrigeration and is used for radiating heat of the first LED light source (4);
a second LED light source (5) connected to the second light source controllable power supply (3);
the second refrigerator (11) is connected with the second controllable power supply (13) for refrigeration and is used for radiating heat of the second LED light source (5);
the first temperature sensor (7) is used for detecting the temperature of the first LED light source (4) to obtain a first temperature signal and sending the first temperature signal to the external control device (1);
the second temperature sensor (8) is used for detecting the temperature of the second LED light source (5) to obtain a second temperature signal and sending the second temperature signal to the external control device (1);
a constant voltage power supply (9) connected to the first temperature sensor (7) and the second temperature sensor (8);
the light-gathering optical fiber (19) is provided with two input ports and an output port, the two input ports correspond to the first LED light source (4) and the second LED light source (5) one by one, and light emitted by the first LED light source (4) and the second LED light source (5) enters the corresponding input ports;
the sample test bench (18) corresponds to the output port, and the output light of the output port irradiates on the sample test bench (18);
the light intensity detector (6) is used for detecting the light intensity on the sample test platform (18) to obtain a light intensity signal and sending the light intensity signal to the external control device (1);
the external control device (1) is used for receiving the first temperature signal, the second temperature signal and the light intensity signal, controlling the output power of the controllable power supply (2) for the first light source, the controllable power supply (3) for the second light source, the controllable power supply (12) for the first refrigeration and the controllable power supply (13) for the second refrigeration, and setting the output modes of the controllable power supply (2) for the first light source and the controllable power supply (3) for the second light source;
the controllable power supply (2) for the first light source, the first refrigerator (10), the controllable power supply (12) for the first refrigeration, the controllable power supply (3) for the second light source, the second refrigerator (11), the controllable power supply (13) for the second refrigeration, the first temperature sensor (7), the second temperature sensor (8), the constant voltage power supply (9), the light-gathering optical fiber (19), the sample test board (18) and the light intensity detector (6) are all positioned in the box body (20); the first LED light source (4) and the second LED light source (5) are detachably arranged in the box body (20).
2. An LED lighting system as recited in claim 1 wherein said output modes comprise continuous output and pulsed output.
3. An LED illumination system as claimed in claim 1, characterized in that the external control device (1) is adapted to control the output power of the controllable power supply (2) for the first light source, the controllable power supply (3) for the second light source, the controllable power supply (12) for the first refrigeration and the controllable power supply (13) for the second refrigeration, in particular to set the initial output power of the controllable power supply (2) for the first light source, the controllable power supply (3) for the second light source, the controllable power supply (12) for the first refrigeration and the controllable power supply (13) for the second refrigeration, modulating the output power of a first controllable power supply (12) for cooling in accordance with the first temperature signal, and modulating the output power of the second controllable power supply (13) for refrigeration according to the second temperature signal and modulating the output power of the first controllable power supply (2) for light source and the output power of the second controllable power supply (3) for light source according to the light intensity signal.
4. An LED lighting system as claimed in claim 1, further comprising a first heat pipe (14), a first fan (16), a second heat pipe (15) and a second fan (17), wherein said first refrigerator (10), said first heat pipe (14) and said first fan (16) are sequentially stacked in contact, and said first fan (16) is connected to said constant voltage power supply (9); the second refrigerator (11), the second heat pipe (15) and the second fan (17) are sequentially in contact stacking, and the second fan (17) is connected with the constant voltage power supply (9).
5. An LED illumination system according to claim 1, characterized in that the light-gathering fiber (19) is fixed in the housing (20), the light-gathering fiber (19) being a quartz fiber or a liquid fiber.
6. An LED lighting system as claimed in claim 1, characterized in that the first LED light source (4) and the second LED light source (5) are of one-piece construction.
7. An LED illumination system as claimed in claim 1, characterized in that the first LED light source (4) and the second LED light source (5) are uv LEDs, blue LEDs, white LEDs, red LEDs or green LEDs.
8. The modulation method of the LED illumination system according to any one of claims 1 to 7, comprising the following steps:
s1, turning on a first LED light source (4), a second LED light source (5), an external control device (1), a controllable power supply (2) for the first light source, a controllable power supply (3) for the second light source, a first refrigerator (10), a controllable power supply (12) for first refrigeration, a second refrigerator (11), a controllable power supply (13) for second refrigeration, a first temperature sensor (7), a second temperature sensor (8), a constant voltage power supply (9) and a light intensity detector (6);
s2, setting initial output power of the controllable power supply (2) for the first light source, the controllable power supply (3) for the second light source, the controllable power supply (12) for the first refrigeration and the controllable power supply (13) for the second refrigeration through the external control device (1) according to experimental requirements, and setting output modes of the controllable power supply (2) for the first light source and the controllable power supply (3) for the second light source through the external control device (1);
s3, the external control device (1) compares the received first temperature signal, the second temperature signal and the light intensity signal with parameters of experimental requirements, and judges whether the experimental requirements are all met; if so, completing modulation, otherwise, performing S4;
s4, according to S3, the external control device (1) modulates the output powers of the first light source controllable power supply (2), the second light source controllable power supply (3), the first cooling controllable power supply (12), and the second cooling controllable power supply (13), and repeats S3.
9. The brewing method according to claim 8, further comprising the step of placing a sample to be tested on the sample testing station (18) before performing S1 or after completing the brewing.
10. Use of an LED illumination system according to any of claims 1 to 7 in photocatalytic experiments or transient data detection experiments of solar cells.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810373852.3A CN108548099B (en) | 2018-04-24 | 2018-04-24 | A kind of LED lighting system and its modulation method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810373852.3A CN108548099B (en) | 2018-04-24 | 2018-04-24 | A kind of LED lighting system and its modulation method and application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108548099A CN108548099A (en) | 2018-09-18 |
| CN108548099B true CN108548099B (en) | 2020-06-02 |
Family
ID=63512350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810373852.3A Active CN108548099B (en) | 2018-04-24 | 2018-04-24 | A kind of LED lighting system and its modulation method and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108548099B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340621A (en) * | 2018-10-21 | 2019-02-15 | 苏州高新区建金建智能科技有限公司 | A kind of optical-fiber laser lamp cooling box |
| DE102019135270A1 (en) * | 2019-12-19 | 2021-06-24 | HELLA GmbH & Co. KGaA | Computer-implemented method for controlling two light modules |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7423750B2 (en) * | 2001-11-29 | 2008-09-09 | Applera Corporation | Configurations, systems, and methods for optical scanning with at least one first relative angular motion and at least one second angular motion or at least one linear motion |
| CN103764911B (en) * | 2011-09-23 | 2016-05-18 | 纳尔科公司 | The fluorescent method of surface additive in monitoring paper technology |
| CN206235560U (en) * | 2016-09-29 | 2017-06-09 | 宏明科技有限公司 | Reflection and transmission dual-mode optical measuring instrument |
| CN107231724A (en) * | 2017-06-15 | 2017-10-03 | 深圳市晟碟半导体有限公司 | A kind of single switch realizes the method and system of degree of lightening color-temperature regulating |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8098375B2 (en) * | 2007-08-06 | 2012-01-17 | Lumencor, Inc. | Light emitting diode illumination system |
-
2018
- 2018-04-24 CN CN201810373852.3A patent/CN108548099B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7423750B2 (en) * | 2001-11-29 | 2008-09-09 | Applera Corporation | Configurations, systems, and methods for optical scanning with at least one first relative angular motion and at least one second angular motion or at least one linear motion |
| CN103764911B (en) * | 2011-09-23 | 2016-05-18 | 纳尔科公司 | The fluorescent method of surface additive in monitoring paper technology |
| CN206235560U (en) * | 2016-09-29 | 2017-06-09 | 宏明科技有限公司 | Reflection and transmission dual-mode optical measuring instrument |
| CN107231724A (en) * | 2017-06-15 | 2017-10-03 | 深圳市晟碟半导体有限公司 | A kind of single switch realizes the method and system of degree of lightening color-temperature regulating |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108548099A (en) | 2018-09-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103308499B (en) | A kind of blue-ray LED excitated fluorescent powder performance testing device and method of testing | |
| CN101290340B (en) | LED solar simulator | |
| CN103620294B (en) | Method and device for testing optoelectronic devices | |
| CN104280709A (en) | System and method for calibrating a light source for simulating a spectrum of solar radiation | |
| CN108548099B (en) | A kind of LED lighting system and its modulation method and application | |
| KR101213059B1 (en) | System of measuring solar cell and controlling method therefor | |
| CN103424389B (en) | A kind of test system of the PL spectrum measuring fluorescent material and PLE spectrum | |
| CN109283447A (en) | Photomultiplier tube linear measuring system and method | |
| KR20150085794A (en) | Heating apparatus | |
| US20110267090A1 (en) | Method of testing solar cells | |
| CN103018221A (en) | Plant chlorophyll fluorescence detecting device for equalizing irradiation | |
| CN116593427A (en) | A device and method for automatic calibration of excitation light intensity for quantitative FRET imaging | |
| KR102000358B1 (en) | Apparatus for Measuring Characteristic for Solar Cell Using Controlling of LED Light | |
| CN105351790A (en) | Non-compensation all-solid light source type LED solar simulator | |
| CN104792710A (en) | Object optical property measuring device | |
| JP6407100B2 (en) | Solar cell module inspection apparatus and solar cell module inspection method | |
| CN115291071A (en) | LED array photo-thermal integrated detection device and method based on phase-locked amplifier | |
| JP2011049474A (en) | Solar battery evaluation apparatus | |
| CN210465331U (en) | Photoelectrochemistry analyzer | |
| KR101841931B1 (en) | Quantum Efficiency Measurement System of the solar cell and controlling method for the same | |
| CN116470960A (en) | LED modulation bandwidth rapid test system and test method | |
| CN109682770B (en) | Multicomponent freon gas infrared detection device | |
| CN114112314A (en) | A method for testing the detection performance of a multifunctional photoelectric detection system | |
| CN204924913U (en) | Object optical characteristic measuring device | |
| Singh et al. | Measurement of color, photometry and electrical parameters of street light LEDs |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |