CN201273855Y - Test device for LED vehicle lamp - Google Patents
Test device for LED vehicle lamp Download PDFInfo
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- CN201273855Y CN201273855Y CNU200820133993XU CN200820133993U CN201273855Y CN 201273855 Y CN201273855 Y CN 201273855Y CN U200820133993X U CNU200820133993X U CN U200820133993XU CN 200820133993 U CN200820133993 U CN 200820133993U CN 201273855 Y CN201273855 Y CN 201273855Y
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Abstract
The utility model relates to test equipment for a luminous diode vehicle lamp, which comprises a detecting room, an image retrieving device, a displaying device, a controller and a power supply module, wherein, a pick-up lens of the image retrieving device faces a luminous diode vehicle lamp module arranged in the detecting room; in addition, the controller respectively controls and detects images to be detected of the luminous diode vehicle lamp module shot by the image retrieving device, and the controller outputs a display signal to the display device. In addition, the power supply module is electrically connected with the luminous diode vehicle lamp module and the controller. Thus, the test equipment can replace manual visual inspection, can improve the efficiency, can be used for detection through aiming at the integral brightness and the current value, and can be used for detecting the brightness, the position and the color of a single luminous diode arranged in the vehicle lamp module.
Description
Technical field
The utility model is the testing apparatus about a kind of light-emitting diode (LED) car lamp, refers to a kind of equipment that detects the light-emitting diode (LED) car lamp module that is applicable to especially.
Background technology
With general technology now, the work for inspection of car light module is still transferred to traditional manpower and is carried out, and it comprises whether correct whether the inspection vehicle lamp module have this bright and not bright bulb, color or rigging position whether the obviously checks of flaws such as deviation are arranged.Yet, mode with traditional personnel's eyesight check has considerable shortcoming, as its not only waste of manpower, again time and effort consuming, again and each personnel's criterion is inconsistent and personnel because of repeating identical work for inspection for a long time, the eyesight to the reviewer causes harmful effect easily.Again and, only can detect with artificial check system at the part that visually can observe, its details partly as trickle flaws such as brightness size, installation position also can't detect.
Moreover the consciousness that subtracts carbon along with environmental protection and energy saving is surging gradually, and the bulb in the car light module is also replaced by light emitting diode (LED) gradually.Yet the quantity of light emitting diode is often carried out luminous demonstration with a plurality of again simultaneously in the general car light module.In view of the above, increase burden that artificial eyesight detects again, and produce bigger restriction, it mainly is because of brightness is bigger to personnel's visual acuity affected, and more difficult again discover wherein have flaw luminance shortage, position deviation in addition open circuit and burn not bright light emitting diode.
Yet, though in the light emitting diode industry checkout equipment of checking at its optical property is arranged seemingly at present, precisely because only after naked brilliant stage or encapsulation, measure its optical characteristics with sensor.For the car light module and inapplicable, main because of be the car light module check usually all assemble finish after, it detects together with transparent plastic casing, so the checkout equipment of known luminescence diode also can't provide suitable and testing result accurately.
Hence one can see that, how to reach a kind of save manpower, operation simple and easy, detect fast, equipment integral efficient height, can not influence operating personnel's vision health again, can be a kind of the pressing on the industry really more at the thin portion of car light module optical property, and the testing apparatus of the light-emitting diode (LED) car lamp that detects of current/voltage character.
The utility model content
Fundamental purpose of the present utility model is that a kind of testing apparatus of light-emitting diode (LED) car lamp is being provided, so that can replace Manual Visual Inspection, simplify the product examine program, can promote efficient again.Moreover, can at the overall brightness of car light module, and current value detect, and can brightness, position, the color of single light emitting diode in the car light module be detected again.
The utility model is a kind of testing apparatus of light-emitting diode (LED) car lamp, comprising: one detects room, at least one image capture unit, a display device, a controller and a power module.Wherein, detect room and be equipped with at least one light-emitting diode (LED) car lamp module.And at least one image capture unit includes a pick-up lens, and its pick-up lens is towards at least one light-emitting diode (LED) car lamp module that detects room.In addition, controller electrically connects with at least one image capture unit, display device respectively.Its controller is control and detects the testing image that at least one image capture unit is taken at least one light-emitting diode (LED) car lamp module, and controller is exported a shows signal again to display device.In addition, power module is to electrically connect with at least one light-emitting diode (LED) car lamp module, the controller that detect in the room.
Wherein, controller can also include an electric current and detect the unit, and electric current to detect the unit be the current value that detects at least one light-emitting diode (LED) car lamp module in the room in order to detect.It mainly can judge and get rid of light emitting diode whether bright slowly, flicker or situation such as distribution mistake are arranged by the current value of inspection vehicle lamp module.Certainly, the utility model equally also can be judged by the magnitude of voltage of inspection vehicle lamp module.
In addition, controller of the present utility model can comprise a storer, and store a standard picture in the storer, an and standard current value.Its controller captures the testing image that at least one image capture unit transmits, and according to this respectively with storer in standard picture analyse and compare.Controller more captures electric current and detects the current value that the unit transmits again, and according to this respectively with storer in standard current value analyse and compare.That is controller of the present utility model can be directly with the testing image that captures, and current value and the standard picture that is pre-stored in the standard items in the storer, and standard current value compare, need not manually get involved judgement fully, its accuracy in detection, and reliability height.
In addition, controller of the present utility model can with testing image, and standard picture through following calculating formula (1) calculating an overall region brightness mark, and export display device to and show.That is controller of the present utility model can assess the brightness of each viewing area in standard of comparison product and the car light module to be measured, judge according to this whether its brightness is enough, and its calculating formula (1) is as follows:
(1) overall region brightness mark=(255-abs (the average GTG value of the GTG figure layer of the average GTG value-testing image of the GTG figure layer of standard picture))/2; Wherein, abs is meant absolute value.
Again and, controller of the present utility model can with testing image, and standard picture through following calculating formula (2) calculating the brightness mark of a light emitting diode single-point, and export display device to and show.That is controller of the present utility model can assess the brightness of each light emitting diode single-point in standard of comparison product and the car light module to be measured, and whether normal operation and brightness thereof is enough to judge its each light emitting diode according to this, and its calculating formula (2) is as follows:
(2) light emitting diode single-point brightness mark=(255-abs (the average GTG value of the GTG figure layer of the average GTG value-testing image each point of the GTG figure layer of standard picture each point))/2; Wherein, abs is meant absolute value.
Again, controller of the present utility model can be with testing image, and standard picture through following calculating formula (3) to calculate the red mark of a light emitting diode single-point, through following calculating formula (4) to calculate-the green mark of light emitting diode single-point, through following calculating formula (5) to calculate the blue mark of a light emitting diode single-point, and with the red mark of light emitting diode single-point, the green mark of light emitting diode single-point, and the blue mark of light emitting diode single-point through following calculating formula (6) calculating the color mark of a light emitting diode single-point, and export display device to and show.That is controller of the present utility model can be assessed the color of each light emitting diode single-point in standard of comparison product and the car light module to be measured, whether the color of judging its each light emitting diode according to this correct, and aforementioned calculation formula (3), (4), (5), and (6) as follows respectively:
(3) the red mark of light emitting diode single-point=(255-abs (the average color range value of the redness figure layer of the average color range value-testing image each point of the redness figure layer of standard picture each point))/2;
(4) the green mark of light emitting diode single-point=(255-abs (the average color range value of the green figure layer of the average color range value-testing image each point of the green figure layer of standard picture each point))/2;
(5) the blue mark of light emitting diode single-point=(255-abs (the average color range value of the blueness figure layer of the average color range value-testing image each point of the blueness figure layer of standard picture each point))/2;
(6) the color mark=min of light emitting diode single-point (the red mark of light emitting diode single-point, the green mark of light emitting diode single-point, the blue mark of light emitting diode single-point); Wherein, abs is meant absolute value, and min is meant minimum value.
And, controller of the present utility model can with testing image, and standard picture through following calculating formula (7) with the average center of gravity that calculates a testing image each point, and the average center of gravity of a standard picture each point, and with the average center of gravity of testing image each point, and the average center of gravity of standard picture each point through following calculating formula (8) calculating the position mark of a light emitting diode single-point, and export display device to and show.That is controller of the present utility model can be assessed the position of each light emitting diode single-point in standard of comparison product and the car light module to be measured, judge the whether to some extent skew of the installation position of its each light emitting diode or angle according to this, and aforementioned calculation formula (7), and (8) as follows respectively:
(7) average center of gravity=(X-axis mean value, Y-axis mean value); Wherein,
X-axis mean value=∑ each point X-axis coordinate figure/respectively count out;
Y-axis mean value=∑ each point Y-axis coordinate figure/respectively count out;
(8) the position mark of light emitting diode single-point=((the X-axis mean value of the X-axis mean value/standard picture of testing image)+(the Y-axis mean value of the Y-axis mean value/standard picture of testing image)) * 50.
Preferably, detect room and can also include a car light tool, and its car light tool can be the bottom surface of detecting room and offers an opening, its car light tool mainly is in order to fixing car light module to be measured when detecting.In addition, the pick-up lens of at least one image capture unit of the present utility model also can optionally be divided a word with a hyphen at the end of a line between car light tool below and side.That is, image capture unit of the present utility model removable under the car light module position of arbitrary specific region or either side corner degree take.
In addition, power module of the present utility model can also include a controller of pulse width modulation, so-called pulse wave width modulation control is to come the discontinuity supplying electric current with the frequency that general naked eyes can't directly be observed, and then reach energy-conservation and can obtain preferable radiating effect, it is used for high-order car money at present more.The utility model passes through controller of pulse width modulation supplying electric current by phased manner, and it is interrupted number of times (switch switching times) by counting, can detect the serviceable life of light emitting diode thus.So power module of the present utility model except that general direct current pattern supply power, also can be supplied with the electric current after the pulse bandwidth modulation is controlled.
The beneficial effects of the utility model are:
The testing apparatus of light-emitting diode (LED) car lamp of the present utility model is so that can replace Manual Visual Inspection, simplify the product examine program, can promote efficient again.Moreover, can at the overall brightness of car light module, and current value detect, and can brightness, position, the color of single light emitting diode in the car light module be detected again.
Description of drawings
For making the auditor can further understand structure of the present utility model, feature and purpose thereof, below in conjunction with the detailed description of accompanying drawing and preferred embodiment as after, wherein:
Fig. 1 is the integral device synoptic diagram of the utility model one preferred embodiment.
Fig. 2 is the system architecture diagram of the utility model one preferred embodiment.
Fig. 3 is normal voltage, the current settings process flow diagram of the utility model one preferred embodiment.
Fig. 4 is the standard picture setting process figure of the utility model one preferred embodiment.
Fig. 5 is the test flow chart of the utility model one preferred embodiment.
Embodiment
Following examples will be example with the test of light-emitting diode (LED) car lamp, yet light emitting source of the present utility model is not limited only to light emitting diode, and it also can be light sources such as general bulb, Xe lamp bulb or other luminescence component.Certainly, before the applicable encapsulation of the utility model, and the light emitting diode after the encapsulation.Again and, testing apparatus of the present utility model is equally applicable to the detection of other light-emitting device, as traffic sign, LED electronic board, LED light fixture etc.
Please consult Fig. 1 simultaneously, reach Fig. 2, wherein Fig. 1 is the integral device synoptic diagram of testing apparatus one preferred embodiment of a kind of light-emitting diode (LED) car lamp of the utility model, and Fig. 2 is the system architecture diagram of the utility model one preferred embodiment.Show one among the figure and detect room 2, it is mainly in order to ccontaining light-emitting diode (LED) car lamp module 21.Detecting room 2 is an airtight room, and it can avoid being subjected in the testing process other external light source influence, and then impacts testing result.Has a car light tool 22 and detect room 2, the opening that it is offered for the bottom surface of detecting room 2.That is the car light tool 22 of present embodiment be when detecting in order to fixing light-emitting diode (LED) car lamp module 21, and its luminous front mainly can avoid in the testing process light for operating personnel's eyesight generation harmful effect towards the below.
In addition, show an image capture unit 3 among the figure, it is to include a pick-up lens 31, and image capture unit 3 is-CCD in the present embodiment.And pick-up lens 31 is towards the light-emitting diode (LED) car lamp module 21 that detects room 2, that is light-emitting diode (LED) car lamp module 21 is fixed on the car light tool 22, and the protruding luminous part of exposing transparent cover body downwards, and pick-up lens 31 is just towards its luminous part.Again and, the pick-up lens 31 of image capture unit 3 is can optionally divide a word with a hyphen at the end of a line between car light tool 22 belows and side in the present embodiment, this be its removable under the car light module position of arbitrary specific region or either side corner degree carry out shot detection.Show display device 4 among the figure in addition, mainly in order to operation and demonstration testing result.
In addition, also show controller 5 among the figure, it electrically connects with image capture unit 3, display device 4 respectively.And controller 5 is mainly taken a testing image of light-emitting diode (LED) car lamp modules in order to control and detection image capture unit 3, and controller 5 is exported a shows signal again to display device 4.Wherein, the controller 5 of present embodiment comprises a storer 52 again, and store standard pictures 521 in the storer 52, an and standard current value 522.The testing image that its controller 5 pick-up image capture devices 3 transmit, and according to this respectively with storer 52 in standard picture 521 analyse and compare, controller 5 more captures electric current and detects the current value that unit 51 transmits, and according to this respectively with storer 52 in standard current value 522 analyse and compare.
In view of the above, present embodiment mainly can see through the standard of comparison product that detect, reach car light module to be measured, and then analyzes the brightness of each viewing area in the computing light-emitting diode (LED) car lamp module, indivedual brightness of each light emitting diode single-point, the individual colors of each light emitting diode single-point, position or the angle that each light emitting diode single-point is laid.It is as described below wherein to analyze computing:
(1) brightness analysis of each viewing area in the light-emitting diode (LED) car lamp module, whether it is mainly enough in order to the brightness of judging each viewing area.Its middle controller 5 be with testing image, and standard picture 521 through following calculating formula (1) calculating an overall region brightness mark, and export display device 4 to and show that aforementioned calculation formula (1) is as follows:
(1) overall region brightness mark=(255-abs (the average GTG value of the GTG figure layer of the average GTG value-testing image of the GTG figure layer of standard picture))/2; And abs is meant absolute value.
(2) indivedual brightness analysis of each light emitting diode single-point, mainly whether normal luminous running and its brightness is enough in order to judge each light emitting diode for they.Its middle controller 5 be with testing image, and standard picture 521 through following calculating formula (2) calculating the brightness mark of a light emitting diode single-point, and export display device 4 to and show that aforementioned calculation formula (2) is as follows:
(2) this light emitting diode single-point brightness mark=(255-abs (the average GTG value of the GTG figure layer of average GTG value-this testing image each point of the GTG figure layer of this standard picture each point))/2; And abs is meant absolute value.
(3) the individual colors analysis of each light emitting diode single-point, whether it is mainly correct in order to the color of judging each light emitting diode, its middle controller 5 is with testing image, and standard picture 521 through following calculating formula (3) to calculate the red mark of a light emitting diode single-point, through following calculating formula (4) to calculate the green mark of a light emitting diode single-point, through following calculating formula (5) to calculate the blue mark of a light emitting diode single-point, and with the red mark of light emitting diode single-point, the green mark of light emitting diode single-point, and the blue mark of light emitting diode single-point through following calculating formula (6) to calculate the color mark of a light emitting diode single-point, and export display device 4 to and show aforementioned calculation formula (3), (4), (5), and (6) are as follows respectively:
(3) the red mark of light emitting diode single-point=(255-abs (the average color range value of the redness figure layer of the average color range value-testing image each point of the redness figure layer of standard picture each point))/2;
(4) the green mark of light emitting diode single-point=(255-abs (the average color range value of the green figure layer of the average color range value-testing image each point of the green figure layer of standard picture each point))/2;
(5) the blue mark of light emitting diode single-point=(255-abs (the average color range value of the blueness figure layer of the average color range value-testing image each point of the blueness figure layer of standard picture each point))/2;
(6) the color mark=min of light emitting diode single-point (the red mark of light emitting diode single-point, the green mark of light emitting diode single-point, the blue mark of light emitting diode single-point); Wherein, abs is meant absolute value, and min is meant minimum value.
(4) position analysis of each light emitting diode single-point, whether it mainly is offset to some extent in order to position or the angle of judging each light emitting diode assembling.Wherein, controller 5 judges at first whether the luminous point of each light emitting diode in the testing image is valid pixel, that is whether the pixel gray level value of judging every bit is greater than average GTG value, if greater than being valid pixel.Then the testing image of valid pixel, and standard picture 521 through following calculating formula (7) with the average center of gravity that calculates a testing image each point, and the average center of gravity of a standard picture 521 each points, and with the average center of gravity of testing image each point, and the average center of gravity of standard picture 521 each points through following calculating formula (8) to calculate the position mark of a light emitting diode single-point, and export display device 4 to and show, aforementioned calculation formula (7), and (8) as follows respectively:
(7) average center of gravity=(X-axis mean value, Y-axis mean value); Wherein,
X-axis mean value=∑ each point X-axis coordinate figure/respectively count out;
Y-axis mean value=∑ each point Y-axis coordinate figure/respectively count out;
(8) the position mark of light emitting diode single-point=((the X-axis mean value of the X-axis mean value/standard picture of testing image)+(the Y-axis mean value of the Y-axis mean value/standard picture of testing image)) * 50.
Please continue to consult Fig. 1, and Fig. 2 again, but the controller 5 of present embodiment can detect current value again except that above-mentioned sensed luminance, color, position.Mainly be that controller 5 has an electric current and detects unit 51, it is the current values that detect the light-emitting diode (LED) car lamp module 21 in the room 2 in order to detect that its electric current detects unit 51.Yet the fundamental purpose that detects electric current is in order to judge and to get rid of light emitting diode whether situations such as bright slowly, flicker or distribution mistake are arranged.Certainly, be not only to exceed to detect electric current, present embodiment also can be reached identical purpose by the magnitude of voltage of inspection vehicle lamp module.
Wherein, show a power module 6 among the figure again, its with detect light-emitting diode (LED) car lamp module in the room 2, and controller 5 electrically connect, mainly in order to supply power.And the power module 6 of present embodiment has more a controller of pulse width modulation 61 (PWM, Pulse Width Modulation), the power module that is present embodiment also can be supplied with the electric current after the control of pulse bandwidth modulation except that general direct current pattern supply power.
Seeing also Fig. 3 is normal voltage, the current settings process flow diagram of testing apparatus one preferred embodiment of the utility model light-emitting diode (LED) car lamp.The normal voltage of present embodiment, current settings mainly can be divided into setting of automatic normal voltage and current value or manual normal voltage and current value and set two kinds of modes.Wherein, automatically to set step (step S705) as follows for normal voltage and current value, at first puts into standard items (step S710), connect with the mains and relevant operation circuit after, just switch cresset (step S715) according to the CCD order, as switching headlight, lampet, indicator, brake light etc.Come to measure respectively each section voltage and electric current (step S720) again, writing down each section voltage and electric current again is standard value (step S725).Then, set each section voltage and current standard scope (maximum and minimum value) (step S730), that is default voltage and the range of current of non-defective unit in the product examine, store at last and end setup (step S745).Yet it is that storage and end setup (step S745) were promptly finished setting again after directly each section standard voltage value and current standard value (step S740) were set in input that manual normal voltage and current value are set step (step S735).
Seeing also Fig. 4 is the standard picture setting process figure of testing apparatus one preferred embodiment of the utility model light-emitting diode (LED) car lamp.It is as follows that it sets key step, at first puts into standard items (step S805), connect with the mains and relevant operation circuit after, then switch cresset according to the CCD order, and get standard picture (step S810) respectively, as switching headlight, lampet, indicator, brake light etc., and obtain its image etc. respectively.Come again, set each inspection area (step S815), as indicator zone or brake light zone etc.At last, storage and end setup (step S820) are promptly finished setting.
See also the test flow chart of testing apparatus one preferred embodiment of Fig. 5 the utility model light-emitting diode (LED) car lamp.Its key step is as follows, at first put into light-emitting diode (LED) car lamp module to be measured (step S905), connect with the mains and relevant operation circuit after, then switch cresset according to the CCD order, and get testing image (step S910), as switch headlight, lampet, indicator, brake light etc., and obtain its testing image etc. respectively.Measure each section voltage, electric current (step S915) again.Then, with the testing image that captures, and the electric current and voltage value respectively with standard picture, and normal voltage current value analyse and compare (step S920).The method of its analyses and comparison as previously mentioned.Come again, store analyses and comparison results (step S925), and judge whether simultaneously to test again, or directly finish (step S930), then get back to step S910 if proceed test again, if directly finish then display device display result and detection of end (step S935).
The foregoing description only is to give an example for convenience of description, and the interest field that the utility model is advocated should be as the criterion so that the claim scope is described certainly, but not only limits to the foregoing description.
Claims (5)
1, a kind of testing apparatus of light-emitting diode (LED) car lamp is characterized in that, comprising:
One detects room, is equipped with at least one light-emitting diode (LED) car lamp module;
At least one image capture unit includes a pick-up lens, and this pick-up lens detects this at least one light-emitting diode (LED) car lamp module of room towards this;
One display device;
One controller electrically connects with this at least one image capture unit, this display device respectively; And
One power module electrically connects with this this at least one light-emitting diode (LED) car lamp module, this controller that detects in the room.
2, the testing apparatus of light-emitting diode (LED) car lamp as claimed in claim 1 is characterized in that, wherein, this controller is electrically connected with an electric current and detects the unit.
3, the testing apparatus of light-emitting diode (LED) car lamp as claimed in claim 2 is characterized in that, wherein, this controller is electrically connected with a storer.
4, the testing apparatus of light-emitting diode (LED) car lamp as claimed in claim 1 is characterized in that, wherein, this detection room also includes a car light tool, the opening that this car light tool is offered for the bottom surface of detecting room.
5, the testing apparatus of light-emitting diode (LED) car lamp as claimed in claim 1 is characterized in that, wherein, this power module also is electrically connected with a controller of pulse width modulation.
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| CNU200820133993XU CN201273855Y (en) | 2008-09-26 | 2008-09-26 | Test device for LED vehicle lamp |
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| CN102749594A (en) * | 2012-07-04 | 2012-10-24 | 海门东辰照明科技有限公司 | Intelligent testing and detecting system of LED (Light-Emitting Diode) car lamp by computer |
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| CN103185663A (en) * | 2011-12-28 | 2013-07-03 | 英业达股份有限公司 | Light-emitting diode detection method by utilizing digital image |
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| CN103185663A (en) * | 2011-12-28 | 2013-07-03 | 英业达股份有限公司 | Light-emitting diode detection method by utilizing digital image |
| CN103185663B (en) * | 2011-12-28 | 2015-11-25 | 英业达股份有限公司 | Utilize digitized video to the detection method of light emitting diode |
| CN102749594B (en) * | 2012-07-04 | 2015-09-16 | 南通东辰安费诺汽车电子有限公司 | LED car lamp computer intelligence test verification system |
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| CN111381141A (en) * | 2019-12-31 | 2020-07-07 | 浙江凯耀照明有限责任公司 | System and method for rapidly judging mutual influence of performances of lamp filament and lamp shade |
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