CN112235910B - 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
- Publication number
- CN112235910B CN112235910B CN202011124634.XA CN202011124634A CN112235910B CN 112235910 B CN112235910 B CN 112235910B CN 202011124634 A CN202011124634 A CN 202011124634A CN 112235910 B CN112235910 B CN 112235910B
- Authority
- CN
- China
- Prior art keywords
- resistor
- capacitor
- pin
- controller
- lamp module
- 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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
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; the invention detects the photochromic degree and illumination system of the car lamp module when the car lamp module is set for the detection of the coming-off; 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 needed, 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 on beauty, safety and energy conservation by virtue of their advantages of rich color, long service life, high efficiency, fast response speed, etc., and gradually become a new favorite of automobile lighting, and the applications of LEDs in automobile lamps mainly focus on the aspects of headlights, tail lamps, direction lights, daytime running lights, interior lamps, etc. 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 role of a bridge 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 carried out; therefore, the performance and safety test is required when the car lamp module works; however, in the prior art, when the automobile lamp module is detected, only the simple power-on test is carried out on the automobile lamp module, and the chromaticity and the illuminance of the automobile lamp module are not subjected to systematic detection and adjustment test, so that when the automobile lamp module is really used for automobile illumination, the problems of insufficient light intensity and insufficient bright color of light can be caused, and accidents are caused in serious cases.
Disclosure of Invention
The invention aims to: the present invention provides a light color detecting and adjusting system for an automobile lamp module and a working method thereof, so as 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 vehicle lamp when the vehicle lamp modules reach the working state;
the control unit is used for signal transmission and working voltage stability control of 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, regulator D1, resistor R1, field effect transistor Q1, transformer TR1, diode D1, resistor R1, capacitor C1, regulator D1, capacitor C1, resistor R1, resistor C1, polar capacitor C1, resistor R1, regulator D1, electronic switch U1, and inductor L1;
the input end of the fuse FU1, the input end of the rectifier bridge BR1 is connected with the other end of the fuse FU1 and inputs voltage, the pin 2 of the voltage stabilizer U3 is connected with the output end of the rectifier bridge BR1, the pin 1 of the voltage stabilizer U3 is connected with one end of the capacitor C9, the collector of the triode Q3, one end of the resistor R18 and one end of the resistor R12, the pin 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 triode Q3 and one end of the resistor R16, the base of the triode 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, the one end of the resistor R14 and the other end of the resistor R16, the other end of the resistor R14 is connected to the one end of the capacitor C7, the negative electrode of the diode D6 and the negative electrode of the diode D5, pin 1 of the controller U1 is connected to the other end of the capacitor C7, pin 2 of the controller U1 is connected to one end of the capacitor C7, pin 1 of the electronic switch U2 and pin 2 of the transformer TR1, pin 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, pin 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 working voltage, the pin 5 of the controller U1 is grounded, the pin 3 of the controller U1 is connected with the other end of the resistor R2, the other end of the resistor R3 and one end of the resistor R4 at the same time, the pin 6 of the controller U1 is connected with one end of the resistor R5 and the gate of the field-effect tube Q2 at the same time, the drain of the field-effect tube Q2 is connected with one end of the resistor R6 and the other end of the resistor R4 at the same time, the other end of the resistor R6 is grounded, the source of the field-effect tube Q2 is connected with one end of the inductor L1 and the positive electrode of the voltage regulator D1 at the same time, the other end of the inductor L1 inputs voltage, the pin 1 of the transformer TR1 is connected with the negative electrode of the voltage 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 other end of the resistor R9, no. 4 pin of electronic switch U2 simultaneously with the one end of resistance R7 with the one end of electric capacity C3 is connected, the other end of resistance R7 simultaneously with diode D2's negative pole with the one end of electric capacity C4 is connected, No. 3 pin of electronic switch U2 simultaneously with the other end of electric capacity C3 and the other end of resistance R16 are connected, the other end of electric capacity C4 simultaneously with the other end of electric capacity C3 and the one end of resistance R9 is connected.
In one embodiment, the control unit includes: 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 tube Q5, a resistor R15, a capacitor C10, an inductor L2, a field-effect tube Q7, a field-effect tube 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 tube 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 field effect transistor Q5 is connected to the other end of the resistor R15 and the drain of the field effect transistor Q7, the pin 16 of the controller U4 is connected to the gate of the field effect transistor Q4, the pin 2 of the controller U4 is connected to the drain of the field effect transistor 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 field effect transistor Q7 and one end of the inductor L2, the source of the field effect transistor 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, pin No. 12 of the controller U4 is connected with the other end of the resistor R20 and one end of the resistor R21 at the same time, the other end of the resistor R21 is grounded, pin No. 4 of the controller U4 is connected with the other end of the resistor R22, one end of the resistor R23 and the drain of the field-effect transistor Q6 at the same time, the gate of the field-effect transistor Q6 is connected with the other end of the resistor R23, and the source of the field-effect transistor Q6 outputs voltage.
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 testing of various performance functions of the automobile is required; 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, testing protection and safety protection of a working power supply of 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 to reach a stable circuit, so that the constant current source input is realized.
In one embodiment, according to 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 the working voltage is input to the car lamp module; and the driving unit receives the working voltage and triggers the LED lamp in the car lamp module to start working.
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, 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;
a1, a2, A3 in step 24 represent R, G, B in color, respectively, i.e. each group a ═ a1, 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) ═ a1, a2, A3 can be obtained;
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 value of 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:
F＝A1*Ir+A2*Ig+A3*Ib
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 an individual bulb in the lamp group;
wherein, the refraction angle of the light of the bulb
The angle of the bulb and the spatial refraction angle formed with the test board are determined according to the angle of the bulb and the spatial refraction angle, namely:
wherein Z represents the surface area of the bulb;
(m, n) represents a spatial angle, m represents an angle of the bulb at this time, and n represents a spatial refraction angle;
step 273, analyzing 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 detecting the illuminance of the car light module, the light chromaticity of the car light module needs to be detected, which includes the following specific steps:
step 31, collecting and calculating the spectrum of the light according to the current light chromaticity;
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 and the light color of the car lamp module, more than one test is needed, the detection error is controlled within a minimum range, and the illumination result is divided into different illumination grades 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.
Has the advantages that: the invention detects the light color and illumination system of the car lamp module when the car lamp module is set for the field detection; according to the detection results of the illumination and the photochromic 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 needed, 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 illumination of the car lamp module can be reliably detected 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 a 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 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, regulator D1, resistor R1, field effect transistor Q1, transformer TR1, diode D1, resistor R1, capacitor C1, regulator D1, capacitor C1, resistor R1, resistor C1, polar capacitor C1, resistor R1, regulator D1, electronic switch U1, 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, an anode of the diode D6, and an anode 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, and the other end of the resistor R539r 12 is connected to one end of the resistor R13, the other end of the resistor R13 is connected with 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 with one end of the capacitor C7, the negative electrode of the diode D6 and the negative electrode of the diode D5, the pin 1 of the controller U1 is connected with the other end of the capacitor C7, the pin 2 of the controller U1 is connected with one end of the capacitor C7, the pin 1 of the electronic switch U2 and the pin 2 of the transformer TR1, the pin 4 of the controller U1 is connected with one end of the resistor R1, the collector of the triode Q1 and one end of the capacitor C2, the other end of the capacitor C2 is grounded, the pin 8 of the controller U1 is connected with the other end of the resistor R1, one end of the capacitor C1 and the base of the triode Q1, the other end of the capacitor C1 is grounded, the emitter of the triode Q1 is connected to one end of the resistor R3, the pin 7 of the controller U1 is connected to one end of the resistor R2 and inputs an operating voltage, the pin 5 of the controller U1 is grounded, the pin 3 of the controller U1 is connected to the other end of the resistor R2, the other end of the resistor R3 and one end of the resistor R4 at the same time, the pin 6 of the controller U1 is connected to one end of the resistor R5 and the gate of the fet Q2 at the same time, the drain of the fet Q2 is connected to one end of the resistor R6 and the other end of the resistor R4 at the same time, the other end of the resistor R6 is grounded, the source of the fet Q2 is connected to one end of the inductor L1 and the positive electrode of the regulator D1 at the same time, the other end of the inductor L1 inputs a voltage, and the pin 1 of the transformer TR1 is connected to the negative electrode 1, 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 other end of the resistor R9, electronic switch U2's No. 4 pin simultaneously with resistance R7's one end with electric capacity C3's one end is connected, resistance R7's the other end simultaneously with diode D2's negative pole with electric capacity C4's one end is connected, electronic switch U2's No. 3 pin simultaneously with electric capacity C3's the other end with resistance R16's the other end is connected, electric capacity C4's the other end simultaneously with electric capacity C3's the other end with resistance R9's one end is connected.
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 tube Q5, a resistor R15, a capacitor C10, an inductor L2, a field-effect tube Q7, a field-effect tube 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 tube 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 Q7, the source electrode of the field-effect tube Q5 is connected with the anode of the diode D8 and inputs voltage, the drain electrode of the field-effect tube Q5 is connected with the other end of the resistor R15 and the drain electrode of the field-effect tube Q7 at the same time, the No. 16 pin of the controller U4 is connected with the gate of the field-effect tube Q4, the No. 2 pin of the controller U4 is connected with the drain electrode of the field-effect tube Q4 and one end of the resistor R19 at the same time, the other end of the resistor R19 is grounded, one end of the capacitor C10 is connected with the source electrode of the field-effect tube Q7 and one end of the inductor L2 at the same time, the source electrode of the field-effect tube Q4 is connected with the other end of the inductor L2 and one end of the capacitor C11 at the same time, one end of the inductor L3 is connected with the other end of the capacitor C11 and the anode of the diode D7 at the same time, the other end of the inductor L3 is grounded, the cathode of the diode D7 is connected with one end of the cathode of the resistor R20 at the same time, The utility model discloses a controller, including electric capacity C12, resistance R22's one end with 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 with the drain electrode of field effect transistor Q6 is connected, the grid of field effect transistor Q6 with the other end of resistance R23 is connected, field effect transistor Q6's source output voltage.
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 on various performance functions of the automobile are required; 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, testing protection and safety protection of a working power supply of the car lamp module;
and 5, adjusting the input working voltage so as to enable the illuminance and the 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 moment, the control unit adjusts the input voltage according to the working voltage at the moment to achieve a stable circuit, so that the constant current source input is realized.
In a further embodiment, according to the step 1, a power supply voltage is input to the car lamp module, then the voltage is transformed and stabilized through the power supply unit, so that the voltage is converted into a working voltage, and the working voltage is input to the car lamp module; and the driving unit receives the working voltage and triggers the LED lamp in the car lamp module to start working. In a further 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, 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;
wherein, a1, a2, A3 in step 24 represent R, G, B in color, respectively, i.e., each group a ═ (a1, 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) ═ a1, a2, A3 can be obtained;
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 value of each working color image, because the components of RGB are different, a weight is set for the probability of R, G, B in each working color image; the resulting gray values are:
F＝A1*Ir+A2*Ig+A3*Ib
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;
wherein, the refraction angle of the light of the bulb
The angle of the bulb and the spatial refraction angle formed by the bulb and the test board are determined according to the angle, namely:
wherein Z represents the surface area of the bulb;
(m, n) represents a spatial angle, m represents an angle of the bulb at this time, and n represents a spatial refraction angle;
and 273, analyzing 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 detecting the illuminance of the car light module, the light chromaticity of the car light module needs to be detected, and the specific steps are as follows:
step 31, collecting and calculating the spectrum of the light according to the current light chromaticity;
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 level and the light color of the car lamp module, more than one test is needed, 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 levels, so that the reliable detection of the illumination of the car lamp module is realized under different illumination conditions.
The working principle is as follows: when the performance of the car lamp module is tested, firstly, 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 working voltage and input to the car lamp module to work; the driving unit receives the voltage so that the LED lamp in the car lamp module works; secondly, detecting the light color and the illumination; meanwhile, according to the detection results of the illumination and the photochromic 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 protected by a fuse FU1 and is input into a rectification voltage stabilizing circuit consisting of a rectifier bridge BR1 and a voltage stabilizing U3, a capacitor C8 is input in a filtering mode, the voltage is input into a diode D6 through a resistor R18 and is input into a controller U1 in parallel with the diode D5, the input voltage is converted by the controller U1 at the moment, the output voltage is adjusted at the same time, a constant voltage is input through a No. 6 pin of the controller U1, a source output value transformer TR1 of a field effect transistor Q2 is used, and at the moment, the output voltage of the transformer TR1 is adjusted by an electronic switch U2 at the 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 can be reduced to reduce the magnetic flux density of the transformer, thereby reducing the audio noise and the switching loss; as the load current increases, the current limiting point will also rise, skipping fewer cycles; when no switching cycles are 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 a 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 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 the transient voltage spike on the voltage regulator tube D3, so that the 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 photochromic degree of the car lamp module can be ensured;
meanwhile, in the control unit, the current value of the car lamp module is related to the resistor R19, the resistor R19 is externally connected through a CS pin of the controller U4, the resistance value of the sampling resistor is obtained according to the required current value of the car lamp module, and meanwhile, the controller U4 outputs current value adjustment, 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 foregoing embodiments may be combined in any suitable manner without contradiction. The invention is not described in detail in order to avoid unnecessary repetition.
Claims (6)
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 the LED module for each car lamp when the car lamp module reaches the working state;
the control unit is used for signal transmission and working voltage stabilization control of 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;
the driving unit is used for lighting the corresponding car lamp module according to a user instruction; 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, regulator D1, resistor R1, field effect transistor Q1, transformer TR1, diode D1, resistor R1, capacitor C1, regulator D1, capacitor C1, resistor R1, resistor C1, polar capacitor C1, resistor R1, regulator D1, electronic switch U1, and inductor L1;
the input end of the fuse FU1, the input end of the rectifier bridge BR1 is connected with the other end of the fuse FU1 and inputs voltage, the pin 2 of the voltage stabilizer U3 is connected with the output end of the rectifier bridge BR1, the pin 1 of the voltage stabilizer U3 is connected with one end of the capacitor C9, the collector of the triode Q3, one end of the resistor R18 and one end of the resistor R12, the pin 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 with 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 with one end of the capacitor C7, the negative electrode of the diode D6 and the negative electrode of the diode D5, the pin 1 of the controller U1 is connected with the other end of the capacitor C7, the pin 2 of the controller U1 is connected with one end of the capacitor C7, the pin 1 of the electronic switch U2 and the pin 2 of the transformer TR1, the pin 4 of the controller U1 is connected with one end of the resistor R1, the collector of the triode Q1 and one end of the capacitor C2, the other end of the capacitor C2 is grounded, the pin 8 of the controller U1 is connected with the other end of the resistor R1, one end of the capacitor C1 and the base of the triode Q1, the other end of the capacitor C1 is grounded, the emitter of the triode Q1 is connected to one end of the resistor R3, the pin 7 of the controller U1 is connected to one end of the resistor R2 and inputs an operating voltage, the pin 5 of the controller U1 is grounded, the pin 3 of the controller U1 is connected to the other end of the resistor R2, the other end of the resistor R3 and one end of the resistor R4 at the same time, the pin 6 of the controller U1 is connected to one end of the resistor R5 and the gate of the fet Q2 at the same time, the drain of the fet Q2 is connected to one end of the resistor R6 and the other end of the resistor R4 at the same time, the other end of the resistor R6 is grounded, the source of the fet Q2 is connected to one end of the inductor L1 and the positive electrode of the regulator D1 at the same time, the other end of the inductor L1 inputs a voltage, and the pin 1 of the transformer TR1 is connected to the negative electrode 1, 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, pin 6 of the transformer TR1 is connected to one end of the polarity capacitor C6 and the positive electrode of the zener diode D4 and outputs voltage, the other end of the polarity 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, pin 5 of the transformer TR1 is connected to the positive electrode of the diode D2, pin 4 of the transformer TR1 is connected to one end of the resistor R8, pin 3 of the transformer TR1 is connected to one end of the resistor R9, pin 2 of the electronic switch U2 is connected to the other end of the resistor R8 and the other end of the resistor R9, a pin 4 of the electronic switch U2 is simultaneously connected with one end of the resistor R7 and one end of the capacitor C3, the other end of the resistor R7 is simultaneously connected with the cathode of the diode D2 and one end of the capacitor C4, a pin 3 of the electronic switch U2 is simultaneously 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 simultaneously connected with the other end of the capacitor C3 and one end of the resistor R9; the control unit includes: controller U4, resistor R25, capacitor C15, capacitor C14, resistor R24, capacitor C13, capacitor C16, diode D8, field effect transistor Q5, resistor R15, capacitor C10, inductor L2, field effect transistor Q7, field effect transistor Q4, capacitor C11, resistor R19, capacitor C12, inductor L3, diode D7, resistor R20, resistor R21, resistor R22, resistor R23, and field effect transistor Q6;
pin 7 of the controller U4 is connected to one end of the resistor R25, the other end of the resistor R25 is grounded, pin 5 of the controller U4 is connected to one end of the capacitor C15, the other end of the capacitor C15 is grounded, pin 11 of the controller U4 is connected to one end of the capacitor C14, the other end of the capacitor C14 is grounded, pin 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 14 of the controller U4 is connected to the cathode of the diode D8 and one end of the capacitor C16 at the same time, the other end of the capacitor C16 is grounded, pin 15 of the controller U4 is connected to the gate of the fet Q5, one end of the resistor R15 and the gate of the fet Q6 at the same time, the source of the diode Q5 is connected to the anode of the diode R8 and the input voltage, the drain of the field effect transistor Q5 is connected to the other end of the resistor R15 and the drain of the field effect transistor Q7, the pin 16 of the controller U4 is connected to the gate of the field effect transistor Q4, the pin 2 of the controller U4 is connected to the drain of the field effect transistor 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 field effect transistor Q7 and one end of the inductor L2, the source of the field effect transistor 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 pins of controller U4 simultaneously with the other end of resistance R20 with the one end of resistance R21 is connected, resistance R21's other end ground connection, No. 4 pins of controller U4 simultaneously with the other end of resistance R22, the one end of resistance R23 with field effect transistor Q6's drain electrode is connected, field effect transistor Q6's grid with the other end of resistance R23 is connected, field effect transistor Q6's source output voltage.
2. The light color detecting and adjusting system for the vehicle lamp module according to claim 1, wherein the controller U4 is model number T8332FI, and the controller U1 is model number UC1844D 8.
3. An operating method of the light color detecting and adjusting system for the car lamp module according to any one of claims 1 to 2, wherein safety tests of various performance functions of the car are required when the car is assembled; 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, testing protection and safety protection of a working power supply of the car lamp module;
step 5, adjusting the input working voltage so as to enable the illumination and the light color to accord with the working standard;
when the normal work 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, 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;
wherein, a1, a2, A3 in step 24 represent R, G, B in color, respectively, i.e., each group a ═ (a1, a2, A3);
step 25, recording the stock of RGB in each group as a point, and sequencing a plurality of groups as A (x, y); thus, (x, y) ═ a1, a2, A3 can be obtained;
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 value of 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:
F＝A1*Ir+A2*Ig+A3*Ib
wherein F represents a gray scale value; ir, Ig and Ib respectively represent weights matched with 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;
wherein, the refraction angle of the light of the bulb
The angle of the bulb and the spatial refraction angle formed by the bulb and the test board are determined according to the angle, namely:
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;
step 273, analyzing the light flux L, and when the light flux L meets the working range, indicating that the illumination at the moment meets the standard;
when the illuminance of the car lamp module is detected, the photochromic degree of the car lamp module needs to be detected, and the method comprises the following specific steps:
step 31, collecting and calculating the spectrum of the light according to the current light chromaticity;
step 32, measuring the spectral power distribution of the measured optical radiation;
step 33, collecting light rays by using a CCD;
step 34, obtaining corresponding color parameter values through integral operation;
and step 35, the detected 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 detected light source, and the signal is amplified and digitized and then sent to the computer for processing.
4. The operating method of the light color detecting and adjusting system for the vehicle lamp module set according to claim 3, wherein the control unit adjusts the input voltage according to the current operating voltage to achieve a stable circuit according to the detection result of the illumination and light color of the vehicle lamp module set at the time, so as to realize the constant current source input.
5. The operating method of the photochromic detection and adjustment system for the automobile lamp module according to claim 3, wherein a power voltage is input to the automobile lamp module according to the step 1, and then the voltage is transformed and stabilized through the power unit so as to be converted into an operating voltage, and the operating voltage is input to the automobile lamp module; the driving unit receives the working voltage and triggers the LED lamp in the car lamp module to start working.
6. The operation method of the light color detecting and adjusting system for the car light module according to claim 3, wherein more than one test is required for detecting the illumination level and the light color of the car light module, and 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 as to realize reliable detection of the illumination of the car light module under different illumination conditions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011124634.XA CN112235910B (en) | 2020-10-20 | 2020-10-20 | Photochromic detection and adjustment system for automobile lamp module and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011124634.XA CN112235910B (en) | 2020-10-20 | 2020-10-20 | Photochromic detection and adjustment system for automobile lamp module and working method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112235910A CN112235910A (en) | 2021-01-15 |
| CN112235910B true CN112235910B (en) | 2022-07-22 |
Family
ID=74118127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011124634.XA Active CN112235910B (en) | 2020-10-20 | 2020-10-20 | Photochromic detection and adjustment system for automobile lamp module and working method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112235910B (en) |
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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112235910A (en) | 2021-01-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103249220A (en) | Semiconductor light emitting element drive device and lighting fixture with the same | |
| CN107896407A (en) | A kind of self study road lamp system based on big data | |
| CN202056568U (en) | Light adjustable LED lamp | |
| CN107396501A (en) | A kind of intelligent solar road lamp illuminator | |
| CN106793245B (en) | Light-operated LED car headlight control device | |
| CN108414949B (en) | High-voltage light-emitting diode lamp fault diagnosis method and medium based on illumination characteristics | |
| CN112235910B (en) | Photochromic detection and adjustment system for automobile lamp module and working method thereof | |
| CN104540294A (en) | Auto-excitation type LED conversion device for achieving electrodeless light dimming and control method | |
| CN110701521A (en) | Intelligent street lamp capable of automatically adjusting light according to meteorological change | |
| CN203590567U (en) | AC power supply-based LED drive circuit with function of automatic illumination intensity adjusting | |
| CN212064445U (en) | Automobile headlamp self-adaptive control circuit and automobile headlamp | |
| CN214896935U (en) | Self-adaptive LED countdown signal lamp system | |
| CN211203732U (en) | Intelligent street lamp capable of automatically adjusting light according to meteorological change | |
| CN209930380U (en) | Self-adaptive light supplementing equipment for low-illumination environment video image acquisition | |
| CN210124031U (en) | LED lighting system capable of adaptively adjusting light according to ambient illumination | |
| CN114286481A (en) | Energy-saving control method for vehicle illuminating lamp instrument | |
| CN209462657U (en) | A kind of lamp dimmer for recognition of face | |
| CN106686831A (en) | Output open circuit protection circuit and silicon controlled dimming LED drive system and method | |
| CN217116466U (en) | Ripple-removing LED driving power supply and LED lamp | |
| Ripoll-Vercellone et al. | Experimental characterization of off-the-shelf LEDs as photodetectors for waking up microcontrollers | |
| CN216650049U (en) | Ambient light intensity adjusting illumination brightness system of service robot | |
| CN103139993A (en) | Light emitting diode (LED) luminance regulating device and regulating method based on LED self-sensing detection | |
| CN216437527U (en) | Linear induction control circuit and LED lamp | |
| CN218162945U (en) | Intelligent dimming controller for LED lamp | |
| CN219305067U (en) | Adjustable circuit with brightness and color temperature adjusting function and lamp |
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 |