CN112235910A - Photochromic detection and adjustment system for automobile lamp module and working method thereof - Google Patents
Photochromic detection and adjustment system for automobile lamp module and working method thereof Download PDFInfo
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- CN112235910A CN112235910A CN202011124634.XA CN202011124634A CN112235910A CN 112235910 A CN112235910 A CN 112235910A CN 202011124634 A CN202011124634 A CN 202011124634A CN 112235910 A CN112235910 A CN 112235910A
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- 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]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
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- 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]
- H05B45/30—Driver circuits
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- 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]
- H05B45/30—Driver circuits
- H05B45/34—Voltage stabilisation; Maintaining constant voltage
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- 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]
- H05B45/30—Driver circuits
- H05B45/345—Current stabilisation; Maintaining constant current
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The invention discloses a photochromic detection and adjustment system for an automobile lamp module and a working method thereof, belonging to the field of automobile lamp modules; a photochromic detection governing system for car light module group includes: the device comprises a control unit, a constant current source unit, a performance detection unit and a driving unit; when the field detection setting is carried out on the car lamp module, the system detection is carried out on the light color and the illumination of the car lamp module; according to the detection results of the illumination and the light color of the car lamp module at the moment, the control unit adjusts the input voltage according to the working voltage at the moment, so that a stable circuit is achieved, and the constant current source input is realized; meanwhile, when the illuminance and the photochromic degree of the car lamp module are detected, more than one test is required, the detection error is controlled within a minimum range, and meanwhile, under the condition of considering the illumination environment, the illumination result is divided into different illumination grades, so that the reliable detection of the lighting of the car lamp module is realized under different illumination conditions.
Description
Technical Field
The invention discloses a photochromic detection and adjustment system for an automobile lamp module and a working method thereof, and belongs to the field of automobile lamp modules.
Background
In recent years, with the rapid development of semiconductor lighting technology, LEDs meet the requirements of automobile lighting for beauty, safety and energy saving due to the advantages of rich color, long service life, high efficiency, fast response speed and the like, and gradually become a new favorite of automobile lighting, and the applications of LEDs in automobile lamps are mainly focused on the aspects of headlights, tail lamps, direction lamps, daytime running lamps, interior lamps and the like. The LED is generally applied to an LED car light system in the form of a module, including COB LEDs, LED light bars, LED row lamps, and LED light source boards. In the formation from the LED chip to the car lamp system, the LED module plays a key bridge role in the middle, and the LED module is used as a main light-emitting element of the car lamp system, so that the light color performance of the LED module not only influences the overall lighting effect and the safety performance of the car lamp, but also has important significance for ensuring the overall appearance of the car.
However, when the automobile lamp module in the prior art is produced and assembled, safety tests of various performance functions of the automobile need to be performed; therefore, performance and safety tests are required when the car lamp module works; but the simple circular telegram test of car light module is only when prior art detects car light module, and does not carry out systematic detection and regulation test to the colourity and the illuminance of car light module to when the car light module really is used for the automotive lighting, can lead to appearing light intensity not enough with the not bright-coloured problem of light color, lead to the occurence of failure when serious.
Disclosure of Invention
The purpose of the invention is as follows: the light color detecting and adjusting system for the automobile lamp module and the working method thereof are provided to solve the above problems.
The technical scheme is as follows: a photochromic detection governing system for car light module group includes: the performance detection unit is used for detecting the light, color and electric performance of each LED module for the car lamp when the car lamp modules reach the working state;
the control unit is used for carrying out signal transmission and working voltage stability control on the car lamp module;
the constant current source unit is used for adjusting the working voltage input into the car lamp module so as to achieve a stable working state;
and the driving unit is used for lighting the corresponding car lamp module according to the user instruction.
In one embodiment, the constant current source unit includes: fuse FU1, rectifier bridge BR1, voltage regulator U3, triode Q3, capacitor C9, capacitor C8, resistor R18, resistor R12, resistor R13, resistor R17, resistor R16, diode D5, diode D6, resistor R14, capacitor C2, triode Q1, capacitor C1, resistor R1, capacitor C1, controller U1, resistor R1, voltage regulator D1, resistor R1, field effect transistor Q1, transformer TR1, diode D1, resistor R1, capacitor C1, voltage regulator D1, capacitor C1, resistor R1, polarity capacitor C1, resistor R1, voltage regulator D1, electronic switch U1 and inductor L1;
the input end of the fuse FU1 is connected with the other end of the fuse FU1, the input end of the rectifier bridge BR1 is connected with the other end of the fuse FU1, the pin No. 2 of the voltage stabilizer U3 is connected with the output end of the rectifier bridge BR1, the pin No. 1 of the voltage stabilizer U3 is connected with one end of the capacitor C9, the collector of the transistor Q3, one end of the resistor R18 and one end of the resistor R12, the pin No. 3 of the voltage stabilizer U3 is connected with one end of the capacitor C8, the other end of the resistor R18, the anode of the diode D6 and the anode of the diode D5, the output end of the rectifier bridge BR1 is connected with the other end of the capacitor C9, the emitter of the transistor Q3 and one end of the resistor R16, the base of the transistor Q3 is connected with one end of the resistor R17, the other end of the resistor R12 is connected with one end of the resistor R13, the other end of the resistor R13 is connected to the other end of the resistor R17, one end of the resistor R14 and the other end of the resistor R16, the other end of the resistor R14 is connected to one end of the capacitor C7, the negative electrode of the diode D6 and the negative electrode of the diode D5, the pin No. 1 of the controller U1 is connected to the other end of the capacitor C7, the pin No. 2 of the controller U1 is connected to one end of the capacitor C7, the pin No. 1 of the electronic switch U2 and the pin No. 2 of the transformer TR1, the pin No. 4 of the controller U1 is connected to one end of the resistor R1, the collector of the transistor Q1 and one end of the capacitor C2, the other end of the capacitor C2 is grounded, the pin No. 8 of the controller U1 is connected to the other end of the resistor R1, one end of the capacitor C1 and the base of the transistor Q1, the other end of the capacitor C1 is grounded, the emitter of the triode Q1 is connected with one end of the resistor R3, the pin 7 of the controller U1 is connected with one end of the resistor R2 and inputs a working voltage, the pin 5 of the controller U1 is grounded, the pin 3 of the controller U1 is simultaneously connected with the other end of the resistor R2, the other end of the resistor R3 and one end of the resistor R4, the pin 6 of the controller U1 is simultaneously connected with one end of the resistor R5 and the gate of the fet Q2, the drain of the fet Q2 is simultaneously connected with one end of the resistor R6 and the other end of the resistor R4, the other end of the resistor R6 is grounded, the source of the fet Q2 is simultaneously connected with one end of the inductor L1 and the positive electrode of the regulator D1, the other end of the inductor L1 is input a voltage, the pin 1 of the transformer TE1 is connected with the negative electrode of the regulator D1, a pin 7 of the transformer TR1 is connected to one end of the capacitor C5 and the positive electrode of the zener diode D3, the other end of the capacitor C5 is connected to one end of the resistor R10, a pin 6 of the transformer TR1 is connected to one end of the polar capacitor C6 and the positive electrode of the zener diode D4 and outputs voltage, the other end of the polar capacitor C6 is connected to the other end of the resistor R10, the negative electrode of the zener diode D3 and one end of the resistor R11 and outputs voltage, the other end of the resistor R11 is connected to the negative electrode of the zener diode D4, a pin 5 of the transformer TR1 is connected to the positive electrode of the diode D2, a pin 4 of the transformer TR1 is connected to one end of the resistor R8, a pin 3 of the transformer TR1 is connected to one end of the resistor R9, a pin 2 of the electronic switch U2 is connected to the other end of the resistor R8 and the resistor R9, no. 4 pin of the electronic switch U2 is connected with one end of the resistor R7 and one end of the capacitor C3, the other end of the resistor R7 is connected with the cathode of the diode D2 and one end of the capacitor C4, the No. 3 pin of the electronic switch U2 is connected with the other end of the capacitor C3 and the other end of the resistor R16, and the other end of the capacitor C4 is connected with the other end of the capacitor C3 and one end of the resistor R9.
In one embodiment, the control unit comprises: the controller U4, a resistor R25, a capacitor C15, a capacitor C14, a resistor R24, a capacitor C13, a capacitor C16, a diode D8, a field effect transistor Q5, a resistor R15, a capacitor C10, an inductor L2, a field effect transistor Q7, a field effect transistor Q4, a capacitor C11, a resistor R19, a capacitor C12, an inductor L3, a diode D7, a resistor R20, a resistor R21, a resistor R22, a resistor R23 and a field effect transistor Q6;
pin No. 7 of the controller U4 is connected to one end of the resistor R25, the other end of the resistor R25 is grounded, pin No. 5 of the controller U4 is connected to one end of the capacitor C15, the other end of the capacitor C15 is grounded, pin No. 11 of the controller U4 is connected to one end of the capacitor C14, the other end of the capacitor C14 is grounded, pin No. 3 of the controller U4 is connected to one end of the resistor R24, the other end of the resistor R24 is connected to one end of the capacitor C13, the other end of the capacitor C13 is grounded, pin No. 14 of the controller U4 is simultaneously connected to the cathode of the diode D8 and one end of the capacitor C16, the other end of the capacitor C16 is grounded, pin No. 15 of the controller U4 is simultaneously connected to the gate of the fet Q5, one end of the resistor R15 and the gate of the fet Q7, the source of the fet 5 is connected to the positive electrode of the diode Q8 and the input voltage is input, the drain of the fet Q5 is connected to the other end of the resistor R15 and the drain of the fet Q7, the pin 16 of the controller U4 is connected to the gate of the fet Q4, the pin 2 of the controller U4 is connected to the drain of the fet Q4 and the one end of the resistor R19, the other end of the resistor R19 is grounded, one end of the capacitor C10 is connected to the source of the fet Q7 and one end of the inductor L2, the source of the fet Q4 is connected to the other end of the inductor L2 and one end of the capacitor C11, one end of the inductor L3 is connected to the other end of the capacitor C11 and the anode of the diode D7, the other end of the inductor L3 is grounded, the cathode of the diode D7 is connected to the one end of the resistor R20, one end of the capacitor C12, one end of the resistor R22 and the pin 1 of the controller U4, no. 12 pin of controller U4 simultaneously with the other end of resistance R20 with the one end of resistance R21 is connected, the other end ground connection of resistance R21, No. 4 pin of controller U4 simultaneously with the other end of resistance R22, the one end of resistance R23 and the drain electrode of field effect transistor Q6 are connected, the grid of field effect transistor Q6 with the other end of resistance R23 is connected, the source output voltage of field effect transistor Q6.
In one embodiment, controller U4 has a model number T8332FI and controller U1 has a model number UC1844D 8.
A working method of a photochromic detection and adjustment system for an automobile lamp module is characterized in that when an automobile is assembled, safety tests of various performance functions of the automobile are required; therefore, performance and safety tests are required when the car lamp module works; the method comprises the following specific steps:
step 1, supplying power by a power supply to enable a car lamp module to normally work;
step 4, carrying out working power supply test protection and safety protection on the car lamp module;
and 5, adjusting the input working voltage so as to enable the illumination and the light chromaticity to accord with the working standard.
In one embodiment, according to the detection result of the illumination and the light color of the vehicle lamp module at the moment, the control unit adjusts the input voltage according to the working voltage at the moment, so as to achieve a stable circuit, and thus realize the constant current source input.
In one embodiment, according to the step 1, a power supply voltage is input to the car lamp module, and then the voltage is transformed and stabilized through the power supply unit, so that the voltage is converted into a working voltage and is input to the car lamp module to work; therefore, the driving unit receives voltage so as to work the LED lamp in the car lamp module.
In one embodiment, when the normal operation of the power supply of the car lamp module is finished, the illumination detection is carried out according to the step 2; the method comprises the following specific steps:
step 21, firstly, collecting working color images of a plurality of car lamp modules;
step 23, distributing each color component to a corresponding group;
step 24, and there are three color gradients for the colors in each group, namely: a1, a2, A3;
according to a1, a2, A3 in step 24, i.e., RGB in the representative color, i.e., each grouping a = (a 1, a2, A3);
step 25, recording the storage quantity of RGB in each group as a point, and sequencing a plurality of groups as A (x, y); thus, (x, y) = (a 1, a2, A3);
step 26, obtaining basic information of the illumination image of the lamp module through an RGB pixel value method;
step 27, carrying out gray level processing on each working color image;
step 271, in the gray scale values in each working color image, because the RGB components are different, a weight is set for the probability of R, G, B in each working color image; the resulting gray values are:
wherein F represents a gray scale value; ir, Ig and Ib respectively represent weights matched with the pixels of the RGB image;
step 272, calculating the light flux according to the working position of the vehicle model lamp group and the refraction angle of the light irradiating the test board, namely:
wherein L represents a light flux;
r represents the radius of a single bulb in the lamp group;
in step 272, the refraction angle Z1 of the light beam of the bulb according to step 272 is determined according to the angle of the bulb and the spatial refraction angle formed with the test board at the moment, that is:
wherein Z represents the surface area of the bulb;
(m, n) represents a spatial angle, m represents an angle of the bulb at that time, and n represents a spatial refraction angle;
and 273, comparing according to the light flux L, and when the light flux L meets the working range, indicating that the illumination at the moment meets the standard.
In one embodiment, when the illuminance detection of the car lamp module is completed, the light chromaticity detection of the car lamp module needs to be performed, and the specific steps are as follows:
step 31, collecting and calculating the spectrum of the light according to the chromaticity of the light at the moment;
step 32, measuring the spectral power distribution of the measured optical radiation;
step 34, obtaining corresponding color parameter values through integral operation;
and step 35, the measured light radiation enters the monochromator through the optical system, the monochromator splits the light and then the photoelectric detector receives the spectrum information, the light splitting component scans the spectrum of the measured light source, and the signal is amplified and digitized and then sent to the computer for processing.
In one embodiment, when detecting the illumination level and the light color of the car lamp module, more than one test is required, the detection error is controlled within a minimum range, and the illumination result is divided into different illumination levels under the condition of considering the illumination environment, so that the reliable detection of the illumination of the car lamp module is realized under different illumination conditions.
Has the advantages that: when the field detection setting is carried out on the car lamp module, the system detection is carried out on the light color and the illumination of the car lamp module; according to the detection results of the illumination and the light color of the car lamp module at the moment, the control unit adjusts the input voltage according to the working voltage at the moment, so that a stable circuit is achieved, and the constant current source input is realized; meanwhile, when the illuminance and the photochromic degree of the car lamp module are detected, more than one test is required, the detection error is controlled within a minimum range, and meanwhile, under the condition of considering the illumination environment, the illumination result is divided into different illumination grades, so that the reliable detection of the lighting of the car lamp module is realized under different illumination conditions.
Drawings
FIG. 1 is a flow chart of the operation of the present invention.
Fig. 2 is a circuit diagram of the constant current source unit of the present invention.
Fig. 3 is a circuit diagram of a control unit of the present invention.
Fig. 4 is a flow chart of the detection operation of the present invention.
Detailed Description
As shown in fig. 1, in this embodiment, a light color detecting and adjusting system for an automobile lamp module and an operating method thereof include: the device comprises a control unit, a constant current source unit, a performance detection unit and a driving unit.
In a further embodiment, the constant current source unit includes: fuse FU1, rectifier bridge BR1, voltage stabilizer U3, triode Q3, capacitor C9, capacitor C8, resistor R18, resistor R12, resistor R13, resistor R17, resistor R16, diode D5, diode D6, resistor R14, capacitor C2, triode Q1, capacitor C7, resistor R1, capacitor C1, controller U1, resistor R2, resistor R3, resistor R4, resistor R5, voltage stabilizing tube D1, resistor R6, field effect tube Q2, transformer TR1, diode D2, resistor R8, resistor R9, resistor R7, capacitor C3, capacitor C4, voltage stabilizing tube D3, capacitor C5, resistor R10, polarity capacitor C6, resistor R11, voltage stabilizing tube D11, electronic switch U2 and inductor L1.
In a further embodiment, a voltage is input to one end of the fuse FU1, an input end of the rectifier bridge BR1 is connected to and inputs a voltage to the other end of the fuse FU1, a pin No. 2 of the regulator U3 is connected to an output end of the rectifier bridge BR1, a pin No. 1 of the regulator U3 is connected to one end of the capacitor C9, a collector of the transistor Q3, one end of the resistor R18, and one end of the resistor R12, a pin No. 3 of the regulator U3 is connected to one end of the capacitor C8, the other end of the resistor R18, a positive electrode of the diode D6, and a positive electrode of the diode D5, an output end of the rectifier bridge BR1 is connected to the other end of the capacitor C9, an emitter of the transistor Q3, and one end of the resistor R16, a base of the transistor Q3 is connected to one end of the resistor R17, the other end of the resistor R12 is connected to one end of the resistor R13, the other end of the resistor R13 is connected to the other end of the resistor R17, one end of the resistor R14 and the other end of the resistor R16, the other end of the resistor R14 is connected to one end of the capacitor C7, the negative electrode of the diode D6 and the negative electrode of the diode D5, the pin No. 1 of the controller U1 is connected to the other end of the capacitor C7, the pin No. 2 of the controller U1 is connected to one end of the capacitor C7, the pin No. 1 of the electronic switch U2 and the pin No. 2 of the transformer TR1, the pin No. 4 of the controller U1 is connected to one end of the resistor R1, the collector of the transistor Q1 and one end of the capacitor C2, the other end of the capacitor C2 is grounded, the pin No. 8 of the controller U1 is connected to the other end of the resistor R1, one end of the capacitor C1 and the base of the transistor Q1, the other end of the capacitor C1 is grounded, the emitter of the triode Q1 is connected with one end of the resistor R3, the pin 7 of the controller U1 is connected with one end of the resistor R2 and inputs a working voltage, the pin 5 of the controller U1 is grounded, the pin 3 of the controller U1 is simultaneously connected with the other end of the resistor R2, the other end of the resistor R3 and one end of the resistor R4, the pin 6 of the controller U1 is simultaneously connected with one end of the resistor R5 and the gate of the fet Q2, the drain of the fet Q2 is simultaneously connected with one end of the resistor R6 and the other end of the resistor R4, the other end of the resistor R6 is grounded, the source of the fet Q2 is simultaneously connected with one end of the inductor L1 and the positive electrode of the regulator D1, the other end of the inductor L1 is input a voltage, the pin 1 of the transformer TE1 is connected with the negative electrode of the regulator D1, a pin 7 of the transformer TR1 is connected to one end of the capacitor C5 and the positive electrode of the zener diode D3, the other end of the capacitor C5 is connected to one end of the resistor R10, a pin 6 of the transformer TR1 is connected to one end of the polar capacitor C6 and the positive electrode of the zener diode D4 and outputs voltage, the other end of the polar capacitor C6 is connected to the other end of the resistor R10, the negative electrode of the zener diode D3 and one end of the resistor R11 and outputs voltage, the other end of the resistor R11 is connected to the negative electrode of the zener diode D4, a pin 5 of the transformer TR1 is connected to the positive electrode of the diode D2, a pin 4 of the transformer TR1 is connected to one end of the resistor R8, a pin 3 of the transformer TR1 is connected to one end of the resistor R9, a pin 2 of the electronic switch U2 is connected to the other end of the resistor R8 and the resistor R9, no. 4 pin of the electronic switch U2 is connected with one end of the resistor R7 and one end of the capacitor C3, the other end of the resistor R7 is connected with the cathode of the diode D2 and one end of the capacitor C4, the No. 3 pin of the electronic switch U2 is connected with the other end of the capacitor C3 and the other end of the resistor R16, and the other end of the capacitor C4 is connected with the other end of the capacitor C3 and one end of the resistor R9.
In a further embodiment, the control unit comprises: the controller U4, a resistor R25, a capacitor C15, a capacitor C14, a resistor R24, a capacitor C13, a capacitor C16, a diode D8, a field effect transistor Q5, a resistor R15, a capacitor C10, an inductor L2, a field effect transistor Q7, a field effect transistor Q4, a capacitor C11, a resistor R19, a capacitor C12, an inductor L3, a diode D7, a resistor R20, a resistor R21, a resistor R22, a resistor R23 and a field effect transistor Q6.
In a further embodiment, pin No. 7 of the controller U4 is connected to one end of the resistor R25, the other end of the resistor R25 is grounded, pin No. 5 of the controller U4 is connected to one end of the capacitor C15, the other end of the capacitor C15 is grounded, pin No. 11 of the controller U4 is connected to one end of the capacitor C14, the other end of the capacitor C14 is grounded, pin No. 3 of the controller U4 is connected to one end of the capacitor R24, the other end of the resistor R24 is connected to one end of the capacitor C13, the other end of the capacitor C13 is grounded, pin No. 14 of the controller U4 is simultaneously connected to the cathode of the diode D8 and one end of the capacitor C16, the other end of the capacitor C16 is grounded, pin No. 15 of the controller U4 is simultaneously connected to the gate of the fet Q5, one end of the resistor R15, and the gate of the fet 7, a source of the fet Q5 is connected to an anode of the diode D8, and a voltage is input thereto, a drain of the fet Q5 is connected to the other end of the resistor R15 and a drain of the fet Q7, a pin No. 16 of the controller U4 is connected to a gate of the fet Q4, a pin No. 2 of the controller U4 is connected to a drain of the fet Q4 and one end of the resistor R19, the other end of the resistor R19 is grounded, one end of the capacitor C10 is connected to a source of the fet Q7 and one end of the inductor L2, a source of the fet Q4 is connected to the other end of the inductor L2 and one end of the capacitor C11, one end of the inductor L3 is connected to the other end of the capacitor C11 and an anode of the diode D7, the other end of the inductor L3 is grounded, and a cathode of the diode D7 is connected to a cathode of the resistor R20, The one end of electric capacity C12, the one end of resistance R22 and the No. 1 pin of controller U4 is connected, No. 12 pin of controller U4 simultaneously with the other end of resistance R20 with the one end of resistance R21 is connected, the other end ground connection of resistance R21, No. 4 pin of controller U4 simultaneously with the other end of resistance R22, the one end of resistance R23 and the drain connection of field effect transistor Q6, the gate of field effect transistor Q6 with the other end of resistance R23 is connected, the source output voltage of field effect transistor Q6.
In a further embodiment, controller U4 is model number T8332FI and controller U1 is model number UC1844D 8.
A working method of a photochromic detection and adjustment system for an automobile lamp module is characterized in that when an automobile is assembled, safety tests of various performance functions of the automobile are required; therefore, performance and safety tests are required when the car lamp module works; the method comprises the following specific steps:
step 1, supplying power by a power supply to enable a car lamp module to normally work;
step 4, carrying out working power supply test protection and safety protection on the car lamp module;
and 5, adjusting the input working voltage so as to enable the illumination and the light chromaticity to accord with the working standard.
In a further embodiment, according to the detection result of the illumination and the light color of the vehicle lamp module at the time, the control unit adjusts the input voltage according to the working voltage at the time, so as to achieve a stable circuit, and thus realize the constant current source input.
In a further embodiment, according to step 1, a power supply voltage is input to the vehicle lamp module, and then the voltage is transformed and stabilized by the power supply unit, so as to be converted into a working voltage, and the working voltage is input to the vehicle lamp module for working; therefore, the driving unit receives voltage so as to work the LED lamp in the car lamp module.
In a further embodiment, when the normal operation of supplying power to the car lamp module is finished, the illumination detection is carried out according to the step 2; the method comprises the following specific steps:
step 21, firstly, collecting working color images of a plurality of car lamp modules;
step 23, distributing each color component to a corresponding group;
step 24, and there are three color gradients for the colors in each group, namely: a1, a2, A3;
according to a1, a2, A3 in step 24, i.e., RGB in the representative color, i.e., each grouping a = (a 1, a2, A3);
step 25, recording the storage quantity of RGB in each group as a point, and sequencing a plurality of groups as A (x, y); thus, (x, y) = (a 1, a2, A3);
step 26, obtaining basic information of the illumination image of the lamp module through an RGB pixel value method;
step 27, carrying out gray level processing on each working color image;
step 271, in the gray scale values in each working color image, because the RGB components are different, a weight is set for the probability of R, G, B in each working color image; the resulting gray values are:
wherein F represents a gray scale value; ir, Ig and Ib respectively represent weights matched with the pixels of the RGB image;
step 272, calculating the light flux according to the working position of the vehicle model lamp group and the refraction angle of the light irradiating the test board, namely:
wherein L represents a light flux;
r represents the radius of a single bulb in the lamp group;
in step 272, the refraction angle Z1 of the light beam of the bulb according to step 272 is determined according to the angle of the bulb and the spatial refraction angle formed with the test board at the moment, that is:
wherein Z represents the surface area of the bulb;
(m, n) represents a spatial angle, m represents an angle of the bulb at that time, and n represents a spatial refraction angle;
and 273, comparing according to the light flux L, and when the light flux L meets the working range, indicating that the illumination at the moment meets the standard.
In a further embodiment, when the illuminance detection of the car light module is completed, the light chromaticity detection of the car light module needs to be performed, and the specific steps are as follows:
step 31, collecting and calculating the spectrum of the light according to the chromaticity of the light at the moment;
step 32, measuring the spectral power distribution of the measured optical radiation;
step 34, obtaining corresponding color parameter values through integral operation;
and step 35, the measured light radiation enters the monochromator through the optical system, the monochromator splits the light and then the photoelectric detector receives the spectrum information, the light splitting component scans the spectrum of the measured light source, and the signal is amplified and digitized and then sent to the computer for processing.
In a further embodiment, when detecting the illumination and the light color of the car lamp module, more than one test is required, the detection error is controlled within a minimum range, and the illumination result is divided into different illumination levels under the condition of considering the illumination environment, so that the reliable detection of the illumination of the car lamp module under different illumination conditions is realized.
The working principle is as follows: when the performance test of the car lamp module is carried out, firstly, the power supply voltage is input to the car lamp module, and then, the voltage is transformed and stabilized through the power supply unit so as to be converted into the working voltage and input to the car lamp module for working; the driving unit receives voltage so as to work the LED lamp in the car lamp module; secondly, detecting light color and illumination; meanwhile, according to the detection results of the illumination and the light color of the car lamp module at the moment, the control unit adjusts the input voltage according to the working voltage at the moment, so that a stable circuit is achieved, and the constant current source input is realized;
the voltage is input into a rectification voltage stabilizing circuit consisting of a rectifier bridge BR1 and a voltage stabilizing U3 in a protective mode through a fuse FU1, a capacitor C8 carries out filtering input, the voltage is input into a diode D6 through a resistor R18 and is input into a controller U1 in parallel with a diode D5, the controller U1 carries out input voltage conversion and output voltage adjustment at the same time, input constant voltage is carried out through a No. 6 pin of a controller U1, an output value transformer TR1 is carried out through a source electrode of a field effect transistor Q2, and at the moment, the output voltage of the transformer TR1 is adjusted through an electronic switch U2 in a constant voltage stage; the output voltage is maintained by skipping the switching cycle; by adjusting the ratio of the enabled period to the disabled period, the voltage stabilization can be maintained; this also allows the efficiency of the controller U1 to be optimized over the entire load range; under the condition of light load, the current limiting point is reduced to reduce the magnetic flux density of the transformer, so that the audio noise and the switching loss are reduced; as the load current increases, the current limiting point will also rise, skipping fewer cycles; when no switching cycle is skipped (maximum power point is reached), the controller U1 will switch to constant current mode; when the load current needs to be further increased, the output voltage will be reduced along with the increase of the load current, the reduction of the output voltage is reflected on the voltage of the No. 2 pin of the electronic switch U2, and as the response to the reduction of the voltage of the No. 2 pin of the electronic switch U2, the switching frequency is linearly reduced, so that the constant current output is realized; meanwhile, when the output voltage current is output through the capacitor C5 and the electron R10, the output voltage current is used for limiting transient voltage spike on the voltage regulator tube D3, so that drain voltage spike caused by leakage inductance is limited; the voltage regulator tube D3 rectifies the secondary, the capacitor C5 filters the secondary, and therefore the conduction and radiation EMI is reduced, the resistor R11 and the voltage regulator tube D4 can ensure that the output voltage in no-load is within an acceptable limit range, and the resistor R8 and the resistor R9 set the maximum working frequency and the output voltage in a constant voltage stage; therefore, the constant current source output of the power supply is realized, and the stability of the illumination and the light color of the car lamp module can be ensured;
meanwhile, in the control unit, the current value of the vehicle lamp module is related to the resistor R19, the resistor R19 is externally connected through the CS pin of the controller U4, the resistance value of the sampling resistor is obtained according to the required current value of the vehicle lamp module, and the output current value of the controller U4 is adjusted at the same time, so that the dimming effect is achieved; therefore, the current value of the car lamp module can be directly set and can be adjusted according to actual requirements; thereby realizing the function of automatic dimming.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. The invention is not described in detail in order to avoid unnecessary repetition.
Claims (10)
1. The utility model provides a photochromic detection governing system for car light module, its characterized in that includes:
the performance detection unit is used for detecting the light, color and electric performance of each LED module for the car lamp when the car lamp modules reach the working state;
the control unit is used for carrying out signal transmission and working voltage stability control on the car lamp module;
the constant current source unit is used for adjusting the working voltage input into the car lamp module so as to achieve a stable working state;
and the driving unit is used for lighting the corresponding car lamp module according to the user instruction.
2. The system for detecting and adjusting light color of an automobile lamp module according to claim 1, wherein the constant current source unit comprises: fuse FU1, rectifier bridge BR1, voltage regulator U3, triode Q3, capacitor C9, capacitor C8, resistor R18, resistor R12, resistor R13, resistor R17, resistor R16, diode D5, diode D6, resistor R14, capacitor C2, triode Q1, capacitor C1, resistor R1, capacitor C1, controller U1, resistor R1, voltage regulator D1, resistor R1, field effect transistor Q1, transformer TR1, diode D1, resistor R1, capacitor C1, voltage regulator D1, capacitor C1, resistor R1, polarity capacitor C1, resistor R1, voltage regulator D1, electronic switch U1 and inductor L1;
the input end of the fuse FU1 is connected with the other end of the fuse FU1, the input end of the rectifier bridge BR1 is connected with the other end of the fuse FU1, the pin No. 2 of the voltage stabilizer U3 is connected with the output end of the rectifier bridge BR1, the pin No. 1 of the voltage stabilizer U3 is connected with one end of the capacitor C9, the collector of the transistor Q3, one end of the resistor R18 and one end of the resistor R12, the pin No. 3 of the voltage stabilizer U3 is connected with one end of the capacitor C8, the other end of the resistor R18, the anode of the diode D6 and the anode of the diode D5, the output end of the rectifier bridge BR1 is connected with the other end of the capacitor C9, the emitter of the transistor Q3 and one end of the resistor R16, the base of the transistor Q3 is connected with one end of the resistor R17, the other end of the resistor R12 is connected with one end of the resistor R13, the other end of the resistor R13 is connected to the other end of the resistor R17, one end of the resistor R14 and the other end of the resistor R16, the other end of the resistor R14 is connected to one end of the capacitor C7, the negative electrode of the diode D6 and the negative electrode of the diode D5, the pin No. 1 of the controller U1 is connected to the other end of the capacitor C7, the pin No. 2 of the controller U1 is connected to one end of the capacitor C7, the pin No. 1 of the electronic switch U2 and the pin No. 2 of the transformer TR1, the pin No. 4 of the controller U1 is connected to one end of the resistor R1, the collector of the transistor Q1 and one end of the capacitor C2, the other end of the capacitor C2 is grounded, the pin No. 8 of the controller U1 is connected to the other end of the resistor R1, one end of the capacitor C1 and the base of the transistor Q1, the other end of the capacitor C1 is grounded, the emitter of the triode Q1 is connected with one end of the resistor R3, the pin 7 of the controller U1 is connected with one end of the resistor R2 and inputs a working voltage, the pin 5 of the controller U1 is grounded, the pin 3 of the controller U1 is simultaneously connected with the other end of the resistor R2, the other end of the resistor R3 and one end of the resistor R4, the pin 6 of the controller U1 is simultaneously connected with one end of the resistor R5 and the gate of the fet Q2, the drain of the fet Q2 is simultaneously connected with one end of the resistor R6 and the other end of the resistor R4, the other end of the resistor R6 is grounded, the source of the fet Q2 is simultaneously connected with one end of the inductor L1 and the positive electrode of the regulator D1, the other end of the inductor L1 is input a voltage, the pin 1 of the transformer TE1 is connected with the negative electrode of the regulator D1, a pin 7 of the transformer TR1 is connected to one end of the capacitor C5 and the positive electrode of the zener diode D3, the other end of the capacitor C5 is connected to one end of the resistor R10, a pin 6 of the transformer TR1 is connected to one end of the polar capacitor C6 and the positive electrode of the zener diode D4 and outputs voltage, the other end of the polar capacitor C6 is connected to the other end of the resistor R10, the negative electrode of the zener diode D3 and one end of the resistor R11 and outputs voltage, the other end of the resistor R11 is connected to the negative electrode of the zener diode D4, a pin 5 of the transformer TR1 is connected to the positive electrode of the diode D2, a pin 4 of the transformer TR1 is connected to one end of the resistor R8, a pin 3 of the transformer TR1 is connected to one end of the resistor R9, a pin 2 of the electronic switch U2 is connected to the other end of the resistor R8 and the resistor R9, no. 4 pin of the electronic switch U2 is connected with one end of the resistor R7 and one end of the capacitor C3, the other end of the resistor R7 is connected with the cathode of the diode D2 and one end of the capacitor C4, the No. 3 pin of the electronic switch U2 is connected with the other end of the capacitor C3 and the other end of the resistor R16, and the other end of the capacitor C4 is connected with the other end of the capacitor C3 and one end of the resistor R9.
3. The system for detecting and adjusting light color of an automobile lamp module according to claim 1, wherein the control unit comprises: the controller U4, a resistor R25, a capacitor C15, a capacitor C14, a resistor R24, a capacitor C13, a capacitor C16, a diode D8, a field effect transistor Q5, a resistor R15, a capacitor C10, an inductor L2, a field effect transistor Q7, a field effect transistor Q4, a capacitor C11, a resistor R19, a capacitor C12, an inductor L3, a diode D7, a resistor R20, a resistor R21, a resistor R22, a resistor R23 and a field effect transistor Q6;
pin No. 7 of the controller U4 is connected to one end of the resistor R25, the other end of the resistor R25 is grounded, pin No. 5 of the controller U4 is connected to one end of the capacitor C15, the other end of the capacitor C15 is grounded, pin No. 11 of the controller U4 is connected to one end of the capacitor C14, the other end of the capacitor C14 is grounded, pin No. 3 of the controller U4 is connected to one end of the resistor R24, the other end of the resistor R24 is connected to one end of the capacitor C13, the other end of the capacitor C13 is grounded, pin No. 14 of the controller U4 is simultaneously connected to the cathode of the diode D8 and one end of the capacitor C16, the other end of the capacitor C16 is grounded, pin No. 15 of the controller U4 is simultaneously connected to the gate of the fet Q5, one end of the resistor R15 and the gate of the fet Q7, the source of the fet 5 is connected to the positive electrode of the diode Q8 and the input voltage is input, the drain of the fet Q5 is connected to the other end of the resistor R15 and the drain of the fet Q7, the pin 16 of the controller U4 is connected to the gate of the fet Q4, the pin 2 of the controller U4 is connected to the drain of the fet Q4 and the one end of the resistor R19, the other end of the resistor R19 is grounded, one end of the capacitor C10 is connected to the source of the fet Q7 and one end of the inductor L2, the source of the fet Q4 is connected to the other end of the inductor L2 and one end of the capacitor C11, one end of the inductor L3 is connected to the other end of the capacitor C11 and the anode of the diode D7, the other end of the inductor L3 is grounded, the cathode of the diode D7 is connected to the one end of the resistor R20, one end of the capacitor C12, one end of the resistor R22 and the pin 1 of the controller U4, no. 12 pin of controller U4 simultaneously with the other end of resistance R20 with the one end of resistance R21 is connected, the other end ground connection of resistance R21, No. 4 pin of controller U4 simultaneously with the other end of resistance R22, the one end of resistance R23 and the drain electrode of field effect transistor Q6 are connected, the grid of field effect transistor Q6 with the other end of resistance R23 is connected, the source output voltage of field effect transistor Q6.
4. The system as claimed in claim 1, wherein the controller U4 is model number T8332FI, and the controller U1 is model number UC1844D 8.
5. A working method of the photochromic detection and adjustment system for the automobile lamp module set according to any one of claims 2 to 4, wherein when the automobile is assembled, safety tests of various performance functions of the automobile are required; therefore, performance and safety tests are required when the car lamp module works; the method comprises the following specific steps:
step 1, supplying power by a power supply to enable a car lamp module to normally work;
step 2, detecting the illumination of the car lamp module;
step 3, detecting the light chromaticity of the car lamp module;
step 4, carrying out working power supply test protection and safety protection on the car lamp module;
and 5, adjusting the input working voltage so as to enable the illumination and the light chromaticity to accord with the working standard.
6. The operating method of the light color detecting and adjusting system for the automobile lamp module set according to claim 5, wherein the control unit adjusts the input voltage according to the current operating voltage according to the detection result of the illumination and light color of the automobile lamp module set, so as to achieve a stable circuit and achieve the constant current source input.
7. The operating method of the photochromic detection and adjustment system for the automobile lamp module according to claim 5, wherein the power voltage is input to the automobile lamp module according to the step 1, and then the voltage is transformed and stabilized by the power unit, so as to be converted into the operating voltage and input to the automobile lamp module for operation; therefore, the driving unit receives voltage so as to work the LED lamp in the car lamp module.
8. The working method of the photochromic detection and adjustment system for the automobile lamp module set is characterized in that illumination detection is carried out according to the step 2 when normal operation of supplying power to the lamp module set is finished; the method comprises the following specific steps:
step 21, firstly, collecting working color images of a plurality of car lamp modules;
step 22, arranging and packaging color components in the image;
step 23, distributing each color component to a corresponding group;
step 24, and there are three color gradients for the colors in each group, namely: a1, a2, A3;
according to a1, a2, A3 in step 24, i.e., RGB in the representative color, i.e., each grouping a = (a 1, a2, A3);
step 25, recording the storage quantity of RGB in each group as a point, and sequencing a plurality of groups as A (x, y); thus, (x, y) = (a 1, a2, A3);
step 26, obtaining basic information of the illumination image of the lamp module through an RGB pixel value method;
step 27, carrying out gray level processing on each working color image;
step 271, in the gray scale values in each working color image, because the RGB components are different, a weight is set for the probability of R, G, B in each working color image; the resulting gray values are:
wherein F represents a gray scale value; ir, Ig and Ib respectively represent weights matched with the pixels of the RGB image;
step 272, calculating the light flux according to the working position of the vehicle model lamp group and the refraction angle of the light irradiating the test board, namely:
wherein L represents a light flux;
r represents the radius of a single bulb in the lamp group;
in step 272, the refraction angle Z1 of the light beam of the bulb according to step 272 is determined according to the angle of the bulb and the spatial refraction angle formed with the test board at the moment, that is:
wherein Z represents the surface area of the bulb;
(m, n) represents a spatial angle, m represents an angle of the bulb at that time, and n represents a spatial refraction angle;
and 273, comparing according to the light flux L, and when the light flux L meets the working range, indicating that the illumination at the moment meets the standard.
9. The operating method of the light color detection and adjustment system for the automobile lamp module according to claim 5, wherein the light color detection of the lamp module is required when the illuminance detection of the lamp module is completed, and the specific steps are as follows:
step 31, collecting and calculating the spectrum of the light according to the chromaticity of the light at the moment;
step 32, measuring the spectral power distribution of the measured optical radiation;
step 33, collecting light rays by using a CCD (charge coupled device);
step 34, obtaining corresponding color parameter values through integral operation;
and step 35, the measured light radiation enters the monochromator through the optical system, the monochromator splits the light and then the photoelectric detector receives the spectrum information, the light splitting component scans the spectrum of the measured light source, and the signal is amplified and digitized and then sent to the computer for processing.
10. The operating method of the light color detecting and adjusting system for the car lamp module set according to claim 5, wherein more than one test is required to be performed when detecting the illumination level and the light color level of the car lamp module set, and the detection error is controlled within a minimum range, and meanwhile, under the condition of considering the illumination environment, reliable detection of the illumination of the car lamp module set under different illumination conditions is realized by dividing the illumination result into different illumination levels.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010054523A1 (en) * | 2008-11-13 | 2010-05-20 | Shen Jinxiang | Combination of a drive power supply of high-power led lamp and matched lamps |
| JP3197202U (en) * | 2015-01-15 | 2015-04-30 | 蔡 孝昌Ｈｓｉａｏ Ｃｈａｎｇ Ｔｓａｉ | LED lighting device control circuit |
| CN205787060U (en) * | 2016-05-31 | 2016-12-07 | 杭州中为光电技术股份有限公司 | A kind of online photochromic electricity detecting system based on original light fixture aging line |
| WO2017020670A1 (en) * | 2015-08-05 | 2017-02-09 | 肖志军 | Constant current driving method and circuit enabling dimming of led lamp |
-
2020
- 2020-10-20 CN CN202011124634.XA patent/CN112235910B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010054523A1 (en) * | 2008-11-13 | 2010-05-20 | Shen Jinxiang | Combination of a drive power supply of high-power led lamp and matched lamps |
| JP3197202U (en) * | 2015-01-15 | 2015-04-30 | 蔡 孝昌Ｈｓｉａｏ Ｃｈａｎｇ Ｔｓａｉ | LED lighting device control circuit |
| WO2017020670A1 (en) * | 2015-08-05 | 2017-02-09 | 肖志军 | Constant current driving method and circuit enabling dimming of led lamp |
| CN205787060U (en) * | 2016-05-31 | 2016-12-07 | 杭州中为光电技术股份有限公司 | A kind of online photochromic electricity detecting system based on original light fixture aging line |
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