CN102928205A - On-line detection system and method for LED (light emitting diode) light guide light distribution quality of automobile daytime running lamp - Google Patents

On-line detection system and method for LED (light emitting diode) light guide light distribution quality of automobile daytime running lamp Download PDF

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CN102928205A
CN102928205A CN2012104725985A CN201210472598A CN102928205A CN 102928205 A CN102928205 A CN 102928205A CN 2012104725985 A CN2012104725985 A CN 2012104725985A CN 201210472598 A CN201210472598 A CN 201210472598A CN 102928205 A CN102928205 A CN 102928205A
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light
led
led light
positioning cylinder
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CN102928205B (en
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邬敏杰
穆平安
戴曙光
金晅宏
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University of Shanghai for Science and Technology
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Abstract

本发明涉及一种汽车日行灯LED光导配光质量在线检测系统及方法，放料工位、测试工位和取料工位前后依次连接，托盘治具在计算机的控制下移动到设定工位并固定，测试工位为一个密闭的暗箱，在测试工位内LED光源模块被前端定位气缸定位在光导管的首端面，LED光源发出的光耦合至光导管的首端面并沿着光导管传输到末端面；同时后端定位气缸带光路终端模块定位在光导管的末端面，并将光反射回光导管，托盘治具正上方的图像传感器采集数据送计算机，计算机从光强、照度同质性和色度参数综合测量与判断LED光导的配光质量，客观、有效、快速实现在线检测，提高了系统的工作效率，系统具有较高的智能化和可靠性，提高了系统工作的连续性和稳定性。

Figure 201210472598

The invention relates to an on-line detection system and method for the quality of LED light guide and light distribution of automobile daytime running lights. The discharging station, the testing station and the picking station are connected in sequence, and the tray fixture moves to the setting station under the control of the computer. And fixed, the test station is a closed dark box, in the test station, the LED light source module is positioned on the head end of the light pipe by the front positioning cylinder, the light emitted by the LED light source is coupled to the head end of the light pipe and transmitted along the light pipe At the same time, the rear-end positioning cylinder with optical path terminal module is positioned on the end surface of the light guide, and reflects the light back to the light guide. The image sensor directly above the pallet fixture collects data and sends it to the computer. The computer is homogeneous in light intensity and illumination Comprehensive measurement of sex and chromaticity parameters and judgment of the light distribution quality of the LED light guide, objective, effective and fast on-line detection, which improves the working efficiency of the system, the system has high intelligence and reliability, and improves the continuity of the system work and stability.

Figure 201210472598

Description

Automobile day portable lighter LED photoconduction luminous intensity distribution quality on-line detection system and method
Technical field
The present invention relates to a kind of, particularly a kind of automobile day portable lighter LED photoconduction luminous intensity distribution quality on-line detection system and method.
Background technology
The develop rapidly of auto industry has proposed more and more higher requirement to automotive lighting, and the quality of automotive lighting is most important to traffic safety.Automobile day, portable lighter also claimed the gradually widespread use of daytime running lamps (Daytime Running Lamps) to come from the automobile lamp standard that European Union force to carry out, EU Committee finds in investigation, open the effect of head lamp when carrying out day driving in early days from north America region, can reduce by 12.4% vehicle accident, also can reduce by 26.4% traffic death probability simultaneously.The maximum effect of day portable lighter, be not be attractive in appearance, but be to provide vehicle by identification (to be seen); In many countries, automobile day portable lighter be considered to an important progress of road safety aspect.
Daytime running lamps are different from common dipped headlights, and it designs for the day driving illumination specially, and energy consumption only has 25%～30% of common dipped headlights.Early stage daytime running lamps, what mostly adopt is based on halogen bulb; Along with the progress of science and technology, based on the continuous development and application of the daytime running lamps of LED lighting engineering, energy-saving effect is further promoted, and energy consumption only is 10% of common dipped headlights, tool Typical Representative be the day portable lighter of LED guide type.
A lot of national relevant being marked with of all having formulated relevant daytime running lamps guarantee that the daytime running lamps of producing installation can really play safing effect in recent years, the ECER79 in the most representative ECE automotive engineering rules that surely belong to Economic Commission for Europe wherein, China also came into effect national standard " automobile daytime running lamp luminous intensity distribution performance " in 1 day January in 2010.Clear in the standard, the photochromic white that is necessary for of daytime running lamps, colorimetric properties must satisfy specified requirement; Colourlessly decline, luminous even, photochromic full, constant lastingly, the most important is luminous intensity distribution performance, daytime running lamps will satisfy basic brightness requirement, but can not be too bright, in order to avoid disturb other people.LED guide type day portable lighter mainly is made of led light source module and photoconductive tube, the performance of photoconductive tube is key and the determinative that affects the luminous intensity distribution quality, therefore before day portable lighter assembling, photoconductive tube is carried out quality testing, not only can provide reliable test figure for design and the manufacturing technology of optimizing and improve the vital part photoconductive tube of LED guide type day portable lighter, and be to improve the luminous intensity distribution quality of day portable lighter and the important step of vehicle lamp assembly Assembling Production efficient.But, the luminous intensity distribution quality automatic on-line detection of the relevant day portable lighter of China almost is blank out at present, so development have independent intellectual property right automobile day portable lighter LED photoconduction luminous intensity distribution quality on-line detection system, significant to the design and the production level that promote China's automobile lamp illumination.
Summary of the invention
The present invention be directed to the problem of the importance of present China shortage LED photoconduction luminous intensity distribution quality on-line detection system and this system, proposed a kind of automobile day portable lighter LED photoconduction luminous intensity distribution quality on-line detection system and method, before LED day portable lighter assembling, after photoconductive tube is produced off-line, in time the luminous intensity distribution quality of photoconductive tube has been carried out effectively, fast, accurately and reliable the test.
Technical scheme of the present invention is: a kind of automobile day portable lighter LED photoconduction luminous intensity distribution quality on-line detection system, comprise the pallet tool, photoelectric sensor, the blowing station, test station, the feeding station, imageing sensor, the led light source module, the front end positioning cylinder, the light path terminal module, the rear end positioning cylinder, the blowing station, test station is connected with the feeding station successively and is connected, the pallet tool is positioned on the station, the pallet tool is moved on the setting station also fixing in the control of computing machine, test station is an airtight camera bellows, in camera bellows side, blowing station top photosensor arrays is installed, the led light source module is fixed on front end positioning cylinder one end in test station, the led light source module is moved with the front end positioning cylinder, the light path terminal module is fixed on rear end positioning cylinder one end in test station, the light path terminal module is with the motion of rear end positioning cylinder, and imageing sensor is settled at the camera bellows top directly over the pallet tool.
Described pallet tool is the right tool of distributing installation and left tool on the pallet, and two workpiece for measurement photoconductive tubes are separately fixed in right tool and the left tool.Described each tool is supporting led light source module, front end positioning cylinder, light path terminal module, rear end positioning cylinder.Left imageing sensor and right imageing sensor are settled in camera bellows top directly over described right tool and the left tool.
Described material storage mechanism unit comprises degreasing sheepskin transport tape and stepper motor, and photoconductive tube can be placed on the degreasing sheepskin transport tape, and material storage mechanism is positioned at the blowing station, and below the pallet tool.
A kind of automobile day portable lighter LED photoconduction luminous intensity distribution quality online test method comprises automobile day portable lighter LED photoconduction luminous intensity distribution quality on-line detection system, specifically comprises the steps:
1) two workpiece for measurement photoconductive tubes are shifted the right tool and left tool of the pallet that is held in place the blowing station by the production shaping station of mechanical hand from photoconductive tube;
2) the pallet tool accurately moves to test station and locking by the blowing station under the control of computing machine, photosensor arrays is sent signal into computing machine after detecting, start detection, the action of front end positioning cylinder, led light source accurately is positioned at the head end face of photoconductive tube, open led light source, the head end face that is optically coupled to photoconductive tube that led light source sends and along light pipes transmit to terminal surface; Simultaneously, positioning cylinder action in rear end drives the terminal surface that the light path terminal module accurately is positioned at photoconductive tube, and with light reflected light conduit;
3) be placed in the image that left imageing sensor on right tool and the left tool and right imageing sensor gather photoconductive tube, and send in the computing machine, computing machine is judged the luminous intensity distribution quality of LED photoconduction through image processing and analysis from light intensity, illumination homogeney and three technical parameters of colourity;
4) detect end, the pallet tool accurately moves to the feeding station by test station under the control of computing machine, and mechanical hand carries out feeding, and the photosensor arrays detection machine is manually done, and if any misoperation, and sends alarm signal.
Beneficial effect of the present invention is: automobile day portable lighter LED photoconduction luminous intensity distribution quality on-line detection system of the present invention and method, adopt machine vision technique from light intensity, illumination homogeney and three technical parameter composite measurements of colourity and the luminous intensity distribution quality of judging the LED photoconduction, objective, effective, quick, productive temp that can adaptive photoconductive tube moulding process realizes detecting online; Assembling and the duty of LED guide type day portable lighter are simulated in the photoconductive tube location of pallet tool, led light source, optically-coupled, light transmission and light reflection fully, the authentic light distribution characteristic that reproduces day portable lighter, therefore can adopt the relative measurement principle to carry out detection and the differentiation of luminous intensity distribution quality, test structure advantages of simple, easy to maintenance; On the pallet distributing installation left and right two tools, can detect two photoconductive tubes simultaneously, improved the work efficiency of system; Adopt photosensor arrays to survey the blowing action of mechanical hand, photosensor arrays both can be used as the enabling signal of detection, can be used as again the security of system guard signal, made system have higher intellectuality and reliability; Adopt the material storage mechanism unit, the blowing operation of redundant mechanical hand, the mismatch fault of the detection beat of buffer system and blowing beat (or photoconductive tube moulding process productive temp) has improved the stability of system works.
Description of drawings
Fig. 1 is automobile day portable lighter LED photoconduction luminous intensity distribution quality on-line detection system pallet jig structure synoptic diagram of the present invention;
Fig. 2 is automobile day portable lighter LED photoconduction luminous intensity distribution quality on-line detection system blowing station synoptic diagram of the present invention;
Fig. 3 is automobile day portable lighter LED photoconduction luminous intensity distribution quality on-line detection system test station synoptic diagram of the present invention;
Fig. 4 is automobile day portable lighter LED photoconduction luminous intensity distribution quality on-line detection system feeding station synoptic diagram of the present invention;
Fig. 5 is automobile day portable lighter LED photoconduction luminous intensity distribution quality on-line detection system structural representation of the present invention;
Fig. 6 is automobile day portable lighter LED photoconduction luminous intensity distribution quality on-line detection system test station detent mechanism synoptic diagram of the present invention;
Fig. 7 is automobile day portable lighter LED photoconduction luminous intensity distribution quality on-line detection system test station imageing sensor structural scheme of mechanism of the present invention;
Fig. 8 is automobile day portable lighter LED photoconduction luminous intensity distribution quality on-line detection system material storage mechanism synoptic diagram of the present invention.
Embodiment
Automobile day portable lighter LED photoconduction luminous intensity distribution quality on-line detection system of the present invention structurally mainly is comprised of pallet tool, photoelectric sensor, blowing station, test station, feeding station, imageing sensor, led light source module, front end positioning cylinder, light path terminal module, rear end positioning cylinder, material storage mechanism unit etc.
Pallet jig structure synoptic diagram as shown in Figure 1, on the pallet 1 of automobile day portable lighter LED photoconduction luminous intensity distribution quality on-line detection system distributing installation right tool 2 and left tool 3, two workpiece for measurement photoconductive tubes 4 and photoconductive tube 5 are shifted from the production shaping station of photoconductive tube by mechanical hand and are placed on the left and right tool of pallet, so system can carry out the detection of dual-workpiece simultaneously.
Be divided into blowing station, test station and feeding station before and after the duty of automobile day portable lighter LED photoconduction luminous intensity distribution quality on-line detection system, respectively shown in Fig. 2,3,4.
Automobile day portable lighter LED photoconduction luminous intensity distribution quality on-line detection system structural representation as shown in Figure 5, the test station of automobile day portable lighter LED photoconduction luminous intensity distribution quality on-line detection system is that an airtight camera bellows 6,7,8,9 is photosensor arrays.
Test station detent mechanism synoptic diagram as shown in Figure 6, after mechanical hand shifted the left and right tool that be placed on pallet from the production shaping station photoconductive tube, the pallet tool accurately moved to test station and locking by the blowing station under the control of computing machine.In test station, front end positioning cylinder 10 action accurately is positioned at the head end face of photoconductive tube with led light source module 11, opens led light source, the head end face that is optically coupled to photoconductive tube that led light source module 11 is sent and along light pipes transmit to terminal surface; Simultaneously, 12 actions of rear end positioning cylinder, light path terminal module 13 accurately is positioned at the terminal surface of photoconductive tube, and with light reflected light conduit.
Such as Fig. 6, test station detent mechanism shown in Figure 7 and imageing sensor structural scheme of mechanism, at the test station state, camera bellows top design directly over the left and right tool of pallet has been settled left imageing sensor 14 and right imageing sensor 15, computing machine obtains the image of photoconductive tube by imageing sensor, through image processing and analysis, judge the luminous intensity distribution quality of LED photoconduction from light intensity, illumination homogeney and three technical parameters of colourity.
Detect complete, front end positioning cylinder 10 and rear end positioning cylinder 12 lifting restorings, the pallet tool moves to the feeding station from test station, manually take out photoconductive tube and send the complete signal of feeding by foot-switch, the pallet tool directly moves to the blowing station from the feeding station, the wait mechanical hand is transferred photoconductive tube to be checked, prepares new round test.
As shown in Figure 5, the action of the blowing of mechanical hand is surveyed by the photosensor arrays 7,8,9 that blowing station top is installed in the camera bellows side.Photosensor arrays both can be used as the enabling signal of detection; Can be used as again the security of system guard signal, returning when the pallet tool in the process of blowing station, in case find efficient light electric transducer array signal, at once stop motion, prevent, avoid pallet tool and mechanical hand to bump, make system have higher intellectuality and reliability.
As shown in Figure 8, automobile day portable lighter LED photoconduction luminous intensity distribution quality on-line detection system adopts the material storage mechanism unit, and material storage mechanism is positioned at the blowing station, and below the pallet tool.Cooperate the storing station after the many feedings of previous production link, actual whole system can be reported to the police in testing as after judging that the photoconduction that has more than 3 pairs is positioned at material storage mechanism, detects behind the request artificial removal again.When system is in test station or feeding station, allow to occur the misoperation blowing of mechanical hand, temporarily photoconductive tube 4 is placed on the degreasing sheepskin transport tape 17, the mismatch fault of the detection beat of buffer system and blowing beat (or photoconductive tube moulding process productive temp) has improved the stability of system works.Transport tape adopts the degreasing sheepskin can avoid the wearing and tearing of photoconductive tube, and transport tape is driven by stepper motor 18; When the misoperation blowing that mechanical hand occurs, stepper motor 18 drives transport tape and moves certain distance, prepares against next time storing; The material storage mechanism unit can allow at most the misoperation blowing of three mechanical hands; System computer passes through the misoperation blowing of photosensor arrays input mechanical hand, and sends alarm signal.

Claims (6)

1.一种汽车日行灯LED光导配光质量在线检测系统，其特征在于，包括托盘治具、光电感应器、放料工位、测试工位、取料工位、图像传感器、LED光源模块（11）、前端定位气缸（10）、光路终端模块（13）、后端定位气缸（12），放料工位、测试工位和取料工位前后依次连接，托盘治具位于工位上，托盘治具在计算机的控制下移动到设定工位上并固定，测试工位为一个密闭的暗箱，在放料工位上部暗箱侧面安装有光电传感器阵列（7、8、9），在测试工位内LED光源模块（11）固定在前端定位气缸（10）一端，LED光源模块（11）随前端定位气缸（10）运动，在测试工位内光路终端模块（13）固定在后端定位气缸（12）一端，光路终端模块（13）随后端定位气缸（12）运动，托盘治具正上方的暗箱顶部安置图像传感器。 1. An on-line detection system for the quality of LED photoconductive light distribution of automotive daytime running lights, characterized in that it includes a pallet fixture, a photoelectric sensor, a feeding station, a testing station, a reclaiming station, an image sensor, and an LED light source module ( 11), the front positioning cylinder (10), the optical path terminal module (13), the rear positioning cylinder (12), the discharging station, the testing station and the reclaiming station are connected in sequence, and the pallet jig is located on the station. The pallet fixture is moved to the setting station and fixed under the control of the computer. The test station is a closed dark box, and a photoelectric sensor array (7, 8, 9) is installed on the side of the dark box above the discharge station. The LED light source module (11) in the station is fixed at one end of the front positioning cylinder (10), the LED light source module (11) moves with the front positioning cylinder (10), and the optical path terminal module (13) in the test station is fixed at the rear end for positioning At one end of the cylinder (12), the optical path terminal module (13) moves with the positioning cylinder (12) at the rear end, and the image sensor is placed on the top of the dark box directly above the pallet jig. 2.根据权利要求1所述汽车日行灯LED光导配光质量在线检测系统，其特征在于，所述托盘治具为托盘（1）上分布安装右治具（2）和左治具（3），两个待测工件光导管（4、5）分别固定在右治具（2）和左治具（3）中。 2. According to claim 1, the on-line inspection system for the quality of light distribution of LED light guides for automotive daytime running lights, characterized in that the tray fixtures are distributed and installed on the tray (1) with right fixtures (2) and left fixtures (3) , the two light guides (4, 5) of the workpiece to be measured are respectively fixed in the right jig (2) and the left jig (3). 3.根据权利要求2所述汽车日行灯LED光导配光质量在线检测系统，其特征在于，所述每个治具配套有LED光源模块（11）、前端定位气缸（10）、光路终端模块（13）、后端定位气缸（12）。 3. According to claim 2, the on-line inspection system for the quality of LED light guide light distribution of automobile daytime running lights is characterized in that each fixture is equipped with an LED light source module (11), a front-end positioning cylinder (10), and an optical path terminal module ( 13), rear end positioning cylinder (12). 4.根据权利要求2所述汽车日行灯LED光导配光质量在线检测系统，其特征在于，所述右治具（2）和左治具（3）的正上方的暗箱顶部安置左图像传感器（14）和右图像传感器（15）。 4. According to claim 2, the on-line inspection system for LED photoconductive light distribution quality of automobile daytime running lights, characterized in that the left image sensor ( 14) and the right image sensor (15). 5.根据权利要求1所述汽车日行灯LED光导配光质量在线检测系统，其特征在于，所述储料机构单元包括脱脂羊皮传输带和步进电机，光导管可放置在脱脂羊皮传输带上，储料机构位于放料工位，并且在托盘治具的下方。 5. According to claim 1, the on-line inspection system for the quality of light distribution of LED light guides for automotive daytime running lights, wherein the storage mechanism unit includes a skim sheepskin conveyor belt and a stepping motor, and the light guide can be placed on the skim sheepskin conveyor belt , the storage mechanism is located at the discharge station and under the tray fixture. 6.一种汽车日行灯LED光导配光质量在线检测方法，包括汽车日行灯LED光导配光质量在线检测系统，其特征在于，具体包括如下步骤： 6. An online detection method for the quality of light distribution of LED light guides for automobile daytime running lights, comprising an online detection system for the quality of light distribution of LED light guides for automobile daytime running lights, characterized in that it specifically includes the following steps: 1）两个待测工件光导管（4、5）由机器手从光导管的生产成型工位转移放置在位于放料工位的托盘（1）的右治具（2）和左治具（3）中； 1) The two workpiece light guides (4, 5) are transferred from the production and molding station of the light guide by the robot to the right jig (2) and left jig (2) placed on the tray (1) at the discharge station 3) Medium; 2）托盘治具在计算机的控制下由放料工位精确移动至测试工位并锁定，光电传感器阵列检测后将信号送入计算机，启动检测，前端定位气缸（10）动作，将LED光源（11）精确定位在光导管的首端面，打开LED光源，LED光源（11）发出的光耦合至光导管的首端面并沿着光导管传输到末端面；同时，后端定位气缸（12）动作，带动光路终端模块（13）精确定位在光导管的末端面，并将光反射回光导管； 2) Under the control of the computer, the tray fixture is accurately moved from the discharge station to the test station and locked. After detection by the photoelectric sensor array, the signal is sent to the computer, and the detection is started. The front positioning cylinder (10) moves, and the LED light source ( 11) Precisely position on the head end face of the light pipe, turn on the LED light source, the light emitted by the LED light source (11) is coupled to the head end face of the light pipe and transmitted to the end face along the light pipe; at the same time, the rear positioning cylinder (12) moves , to drive the optical path terminal module (13) to be precisely positioned on the end surface of the light guide, and reflect the light back to the light guide; 3）安置在右治具（2）和左治具（3）上的左图像传感器（14）和右图像传感器（15）采集光导管的图像，并送入计算机内，计算机经过图像处理与分析，从光强、照度同质性和色度三个技术参数判断LED光导的配光质量； 3) The left image sensor (14) and right image sensor (15) placed on the right jig (2) and left jig (3) collect the image of the light guide and send it to the computer, which processes and analyzes the image , judging the light distribution quality of the LED light guide from the three technical parameters of light intensity, illuminance homogeneity and chromaticity; 4）检测结束，托盘治具在计算机的控制下由测试工位精确移动至取料工位，机器手进行取料，光电传感器阵列检测机器手动作，如有误动作，并发出警示信号。 4) After the inspection is completed, the pallet fixture is accurately moved from the testing station to the reclaiming station under the control of the computer, and the robot hand takes the material, and the photoelectric sensor array detects the movement of the robot hand, and sends out a warning signal if there is any misoperation.
CN201210472598.5A 2012-11-21 2012-11-21 On-line detection system and method for LED (light emitting diode) light guide light distribution quality of automobile daytime running lamp Expired - Fee Related CN102928205B (en)

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CN104458214A (en) * 2014-12-10 2015-03-25 马瑞利汽车零部件(芜湖)有限公司 Auxiliary device for automobile lamp optic test
CN109211533A (en) * 2018-09-18 2019-01-15 苏州道捷电子科技有限公司 Automobile lamp detection system
CN109342023A (en) * 2018-09-14 2019-02-15 吉林小糸东光车灯有限公司 A vehicle light source chromaticity detector
CN110940533A (en) * 2019-12-17 2020-03-31 上汽大众汽车有限公司 A test bench and method for automobile lamps

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