CN202928782U - LED performance test box - Google Patents
LED performance test box Download PDFInfo
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- CN202928782U CN202928782U CN 201220615934 CN201220615934U CN202928782U CN 202928782 U CN202928782 U CN 202928782U CN 201220615934 CN201220615934 CN 201220615934 CN 201220615934 U CN201220615934 U CN 201220615934U CN 202928782 U CN202928782 U CN 202928782U
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Abstract
The utility model discloses an LED performance test box, which comprises a box body, a light-acquiring unit, a first motor, a second motor, a rotating shaft, optical fibers and a connecting piece. The box body is provided with a through hole. The rotating shaft and the optical fibers pass through the through hole. The light-acquiring unit is arranged in the box body. The first motor arranged on the outside of the box body drives the rotating shaft to rotate. The connecting piece is fixed to one end of the rotating shaft that is positioned in the box body. The second motor is fixed on the connecting piece and drives the light-acquiring unit to move towards or away from the rotating shaft. The first ends of the optical fibers are connected with the light-acquiring unit and the second ends of the optical fibers are arranged outside the box body. According to the technical scheme of the utility model, the LED performance test box has the advantages of simple structure and convenient operation and enables the on-line detection of the performance parameters of LEDs.
Description
Technical field
The utility model relates to the LED field tests, is specifically related to a kind of LED performance test case.
Background technology
At present current LED reliability test method is: same model, with batch the LED product in, extracting the sample of some tests, measure its performance parameter, the LED life-span of extrapolating this model, this batch according to corresponding life-span algorithm before test and in process of the test.Because theoretical life-span of LED reaches tens thousand of hours, therefore need to adopt the strenuous test method of strengthening stress to accelerate whole process of the test.
In order to raise the efficiency and the Optimum Experiment result, common practice is simultaneously a plurality of LED samples to be carried out fail-test.Pallet of common sampling in existing LED reliability test system, fix a plurality of LED samples on this pallet, again whole pallet is placed in the strenuous test case, in process of the test when need measuring the performance parameter of LED sample, just the LED sample on pallet is pulled down successively, be positioned in integrating sphere one by one and measure, measure and again the LED sample is reinstalled on pallet after complete, put back to and continue follow-up test in the strenuous test case.The problem of its existence is:
1, in whole process of the test, need to repeatedly install, dismantle the LED sample, increased a large amount of manpowers and time cost;
2 and installing, existing in unloading process and cause the labile factor of test specimen performance change and affect final testing result.
The utility model content
In order to solve the prior art problem, the utility model provides a kind of LED test box of simple in structure and dependable performance.
a kind of LED performance test case, comprise casing and get electro-optical device, also comprise the first motor, the second motor, rotating shaft, optical fiber and web member, described casing is provided with through hole, described rotating shaft and optical fiber pass described through hole, the described electro-optical device of getting is arranged on described box house, be arranged on the described first described rotating shaft rotation of motor-driven of described casing outside, described web member is fixed on described rotating shaft and is in the interior end of described casing, described the second motor is fixed on described web member, described the second motor-driven is described get electro-optical device near or away from described rotating shaft, the first end of described optical fiber is connected with the described electro-optical device of getting, and the second end is outside described casing.
In more excellent scheme, described rotating shaft has axial rotating shaft through hole, and described optical fiber passes described rotating shaft through hole.
In more excellent scheme, the seal that described through hole is provided with in the isolation casing and casing is outer.
In more excellent scheme, also comprise be used to the first rotary encoder that feeds back described the first electric machine rotation angle and be used for controlling the first controller that described the first motor rotates, the output signal end of described the first rotary encoder is electrically connected to described the first controller.
In more excellent scheme, also comprise be used to the second rotary encoder that feeds back described the second electric machine rotation angle and be used for controlling the second controller that described the second motor rotates, the output signal end of described the second rotary encoder is electrically connected to described second controller.
In more excellent scheme, also comprise photometer, the second end of described optical fiber is connected with described photometer.
In more excellent scheme, also comprise the LED shaft collar, described LED shaft collar has at least two concentric circumference that are distributed with the LED fixed bit, and the center of circle of described circumference is on the residing straight line of described rotating shaft, so that the described LED that aims at when electro-optical device rotates on each LED fixed bit that gets.
In more excellent scheme, described get electro-optical device can near or away from described LED shaft collar.
the beneficial effects of the utility model are: adopt the less electro-optical device of getting namely can the light of a plurality of LED samples to be gathered, make the structure of whole LED performance test case comparatively simple, simultaneously, when needs are changed the different LED shaft collar in interval between the LED fixed bit, only need adjustment get the electro-optical device motion and aim at corresponding LED sample, and do not need other too much operations, thereby operation is comparatively simple, good to multiple LED shaft collar applicability, motor drives in the situation of getting the electro-optical device rotation by rotating shaft and web member, can also improve the sealing property of whole LED performance test case, can detect online the timesharing of a plurality of LED properties of sample parameter simultaneously, need not repeatedly to install, dismantle the LED test specimen in testing process, and do not interrupt putting on whole stress conditions of LED test specimen, thereby avoid the test error that changes and introduce because repeatedly installing, dismantle LED test specimen and stress condition.
Description of drawings
Fig. 1 is the partial schematic sectional view of the LED performance test case of a kind of embodiment of the utility model;
Fig. 2 is the partial enlarged drawing of Fig. 1;
Fig. 3 is the schematic perspective view of the LED shaft collar of Fig. 1.
Embodiment
Below with reference to accompanying drawing, specific embodiment of the utility model is described further.
as illustrated in fig. 1 and 2, the LED performance test case of a kind of embodiment, comprise casing 1, the first motor 11, the second motor 3, get electro-optical device 13, rotating shaft 16, web member 17 and optical fiber 14, casing 1 is provided with and is communicated with outside casing and the through hole 12 of the inner chamber 19 of casing, rotating shaft 16 and optical fiber 14 pass through hole 12, get the inner chamber 19 that electro-optical device 13 and the second motor 3 are arranged on casing 1, the first motor 11 is arranged on the outside of casing 1, the first motor 11 drive shafts 16 are rotated, the end and the web member 17 that stretch into the rotating shaft 16 in inner chamber 19 are fixing, thereby the first motor 11 can drive web member 17 and make circular motion, the second motor 3 is fixed on web member 17, the second motor 3 drive get electro-optical device 13 near or away from rotating shaft 16, the first end of optical fiber 14 with get electro-optical device 13 and be connected, the second end is in the outside of casing 1, be connected with photometer 15.
as shown in Figure 3, be provided with LED shaft collar 2 in inner chamber 19, there are at least two concentric circumference on shaft collar 2, and the center of circle of circumference is on the residing straight line of rotating shaft 16, a plurality of LED fixed bits distribute on each circumference, as: the first circumference 21 a plurality of LED fixed bits 211 that distributing, the second circumference 22 a plurality of LED fixed bits 221 that distributing, the first motor 11 is drive shaft 16 rotations (as shown in dotted arrow b direction) under the control of the first controller, and then get electro-optical device 13 by web member 17 and the second motor 2 drives and move on the first circumference 21, get like this electro-optical device 13 and can aim at one by one each LED fixed bit 211 on the first circumference 21, the light (geometric center of getting optical lens of for example getting electro-optical device 13 is aimed at the LED sample) that sends with the LED that receives on LED fixed bit 211, the light time that LED on the LED fixed bit 221 on needs collection the second circumference 22 sends, the second drive motor 3 drives gets electro-optical device 13 towards rotating shaft 16 motions until the second circumference 22 tops, afterwards, the second drive motor 3 stops driving, the first motor 11 begins to drive to be got electro-optical device 13 and moves above the second circumference 22, get like this electro-optical device 13 and can aim at one by one each LED fixed bit 221 on the second circumference 22, the light that sends with the LED that receives on LED fixed bit 221, get electro-optical device along motion (as shown in dotted arrow a) on the residing rectilinear direction of radius (i.e. the radius of the first circumference 21 and the second circumference 22) of web member 17 rotations when the second motor 3 drives, corresponding structure and control method can be more simple.
The first motor 11 can drive rotating shaft 16 by driving-belt 112 and rotate, and rotating shaft 16 also can directly be fixedly connected with the axle of the first motor 11.
Like this, adopt and less get electro-optical device 13(such as one) namely can the light of a plurality of LED samples be gathered, make the structure of whole LED performance test case comparatively simple, simultaneously, (and/or the interval between LED fixed bit 221, interval between needs replacing LED fixed bit 211, and/or the interval of first circumference 21 and 22 of the second circumference) during different LED shaft collar 2, only need adjustment get electro-optical device 13 motions and aim at corresponding LED sample, and do not need other too much operations, thereby operation is comparatively simple, and is good to multiple LED shaft collar applicability.
Through hole 12 places are provided with the seal 18 of the outside of isolation inner chamber 19 and casing, seal 18 can be arranged on through hole 12 1 ends near inner chamber 19, also seal 18 can be set at through hole 12 1 ends near casing 1 outside, through hole 12 positions that are positioned in the middle of casing 1 wall also can arrange seal 18.
therefore only need to adopt the through hole 12 of small diameter, namely can drive and get electro-optical device 13 and rotate on a large scale, to gather the light of a plurality of LED samples, thereby can adopt less seal 18 with the inner chamber 19 of realizing casing 1 and outside isolation, otherwise, get electro-optical device 13 moving linearlies if adopt the first motor 11 that is arranged on outside casing 1 to drive, in order to detect more LED sample, even need to being set, corresponding long opening 12(do not adopt seal 18 on casing 1, through hole and casing are outer, and to be communicated with degree less), because the inner chamber 19 of LED performance test case can adopt high temperature usually, low temperature, the test environment of high humidity, the movement of rotating shaft 16 makes seal 18 be difficult to form sealing effectiveness closely with the wall of inner chamber 19, sealed open 12 is difficulty very.
In addition, rotating shaft 16 can have the rotating shaft through hole 161 along rotor shaft direction, and optical fiber 14 passes rotating shaft through hole 161, one ends and puts in inner chamber 19 and get electro-optical device 13 and be connected, the other end passes casing 1 and is connected with photometer 15, can avoid like this rotation of rotating shaft 16 and coiling optical fiber 14 as far as possible.
LED performance test case can also comprise the first rotary encoder 111 for feedback the first motor 11 rotational angles, the axle of the first motor 11 turns to different angles, the corresponding electric signal of output signal end output of the first rotary encoder 111, the output signal end of the first rotary encoder 111 is electrically connected to the first controller, the first controller receives the instruction of the rotation set angle of the computing machine that is connected with self, perhaps rotate set angle according to the setting of the first controller internal processes, the first controller receives the output electrical signals of the first rotary encoder 111 simultaneously, the first controller judges whether this output electrical signals (an actual anglec of rotation of corresponding the first motor 11) is corresponding with set angle, if it is not corresponding, the first controller is further controlled the first motor 11 towards the position rotation of set angle, thereby realized the FEEDBACK CONTROL to the first motor 11, the running accuracy that improves the first motor 11 and get electro-optical device 13.
LED performance test case can also comprise the second rotary encoder 31 for feedback the second motor 3 rotational angles, the axle of the second motor 3 turns to different angle (namely the corresponding electro-optical device 13 of getting is driven into to rotating shaft 16 apart from different positions), the corresponding electric signal of output signal end output of the second rotary encoder 31, the output signal end of the second rotary encoder 31 is electrically connected to second controller, moving to apart from the instruction of rotating shaft 16 setpoint distances of the computing machine that the second controller reception is connected with self, perhaps according to the setting of second controller internal processes and mobile setpoint distance, second controller receives the output electrical signals of the second rotary encoder 31 simultaneously, second controller judges whether this output electrical signals (correspondence is got electro-optical device 13 to the actual range of rotating shaft 16) is corresponding with setpoint distance, if it is not corresponding, second controller is further controlled the second motor 3 rotations, drive is got electro-optical device 13 and is moved to apart from the position of rotating shaft 16 setpoint distances, thereby realized the FEEDBACK CONTROL to the second motor 3, improved get electro-optical device 13 near or away from the precision of rotating shaft 16 motions.
When LED performance test case also will be completed LED vibration-testing function, rotating shaft 16 can along rotating shaft axially near or away from LED shaft collar 2, get electro-optical device 13 corresponding sports thereby drive, when preventing 2 vibration of LED shaft collar with get electro-optical device 13 collisions.
The LED scaling method of a kind of embodiment comprises the steps:
1-1. record the output signal of the second rotary encoder 31, the first motor 11 drivings are got electro-optical device 13 and are moved on the first circumference 21: for example, computing machine sends the location position instruction to the first controller of the first motor 11, and the first motor 11 namely begins driving and gets electro-optical device 13 rotations;
1-2. simultaneously, photometer 15 detects the light intensity of sending from getting LED that electro-optical device 13 transmits through optical fiber 14;
if 1-3. within certain time period, the light intensity that photometer 15 detects reaches a peak value, be to begin to reduce after light intensity increases gradually, what this maximum light intensity was corresponding is namely a peak value, at this moment, read and record the output signal (the corresponding different rotational angle of different output signals) of the first rotary encoder 111 from the computing machine (perhaps photometer 15) that photometer 15 connects, and set up the position of this LED and the corresponding relation of this output signal, can accurately aim at corresponding LED like this, certainly, also can light intensity in a single day be detected by photometer 15, namely be considered as having aimed at certain LED.
1-4. driving the first motor 11 rotates a circle, namely complete the demarcation to all LED on the first circumference 21, set up the corresponding relation of each LED of the first circumference 21 output signal with output signal corresponding the first rotary encoder 111 and the second rotary encoder 31 position;
1-5. computing machine sends to the second motor 3 instruction that moves to the second circumference 22, the second motor 3 drives to be got electro-optical device 13 and moves on the second circumference 22 along the radial direction of the first circumference 21, the output signal of computer recording the second rotary encoder 31;
1-6. computing machine sends the location position instruction to the first motor 3 again, the first motor 11 drivings are got electro-optical device 13 and are moved on the second circumference 22, and photometer 15 detections are simultaneously got electro-optical device and whether aimed at certain LED, and step and the 1-2 to 1-3 of detection are similar;
1-7. driving the first motor 11 rotates a circle, namely complete the demarcation to all LED on the second circumference 22, set up the corresponding relation of each LED of the second circumference 22 output signal with output signal corresponding the first rotary encoder 111 and the second rotary encoder 31 position;
When computing machine and do not know the first circumference 21 or during the position of the second circumference 22, need to demarcate the residing position of circumference, computing machine sends the location position instruction to the controller of the first motor 11, the first motor 11 namely begins driving and gets electro-optical device 13 rotations, photometer 15 detections are simultaneously got electro-optical device 13 and whether are aimed at certain LED, if detected on corresponding circumference and had LED, record the output signal of the second rotary encoder 31 this moment; After having turned a week, electro-optical device 13 still LED light can't be detected if get, computing machine sends move to the second controller of the second motor 3, the second motor 3 drive get electro-optical device 3 near or away from after rotating shaft 16 motion one segment distances, the first motor 11 drives again gets electro-optical device 13 rotations, photometer 15 detections are simultaneously got electro-optical device 13 and whether are aimed at certain LED, until detected the circumference that has LED on all LED shaft collars.
When needs are changed other LED shaft collar 2, even the interval between the LED fixed bit on each circumference is not identical, after above-mentioned demarcating steps, also can set up easily the corresponding relation of the output signal of the output signal of each LED position and the first rotary encoder 111 and the second rotary encoder 31, adopt compared to existing technology the fixing electro-optical device of getting, structure is simpler, operates easier.
The LED performance test methods of a kind of embodiment comprises the steps:
2-1. when needing to detect the LED of assigned address, computing machine is to the control signal of the first controller transmission with a LED assigned address (desired location), drive the first motor 11 drives and get the position that electro-optical device 13 rotates to correspondence, computing machine is to the control signal of second controller transmission with the 2nd LED assigned address, second controller drives the second motor 3 drives and gets the position that electro-optical device 13 moves to correspondence, can successively or send simultaneously this two instructions; The user can manually input the coordinate figure of LED sample, computing machine can be converted to according to coordinate figure the encoded radio of corresponding the first rotary encoder 111 and the second rotary encoder 31, and the first motor 11 and the second motor 3 are respectively according to the corresponding angle of encoded radio rotation of rotary encoder separately;
2-2. the first controller receives the output signal of the first rotary encoder 111, if a LED physical location and a LED assigned address that this output signal is corresponding are inconsistent, control the first motor 11 and drive and get electro-optical device 13 and rotate towards a LED assigned address, until a LED physical location is consistent with a LED assigned address;
2-3. second controller receives the output signal of the second rotary encoder 31, if the 2nd LED physical location and the 2nd LED desired location that the output signal of the second rotary encoder 31 is corresponding are inconsistent, control the second motor 3 and drive and get electro-optical device 13 and move towards the 2nd LED desired location;
2-4. after the light that the LED of assigned address sends is got electro-optical device 13 and gathered, be transferred to photometer 15 through optical fiber 14, photometer 15 can detect the parameters such as the light intensity, spectrum, colourity of this LED.
LED performance test case, lighting system (comprise and get electro-optical device 13, optical fiber 14) and photometer 15 all can be controlled by the computing machine automatic synchronization, automatically record the case temperature, electric current, voltage, electric power of environmental parameter in test period, LED performance test case, LED test specimen, parameters such as luminous power or light intensity, spectrum, colourity relatively by computing machine follow procedure set model, according to the attenuation of test specimen performance parameter, calculate the estimated performance of test specimen by related algorithm.
Claims (8)
1. LED performance test case, comprise casing and get electro-optical device, it is characterized in that: also comprise the first motor, the second motor, rotating shaft, optical fiber and web member, described casing is provided with through hole, described rotating shaft and optical fiber pass described through hole, the described electro-optical device of getting is arranged on described box house, be arranged on the described first described rotating shaft rotation of motor-driven of described casing outside, described web member is fixed on described rotating shaft and is in the interior end of described casing, described the second motor is fixed on described web member, described the second motor-driven is described get electro-optical device near or away from described rotating shaft, the first end of described optical fiber is connected with the described electro-optical device of getting, and the second end is outside described casing.
2. LED performance test case as claimed in claim 1, it is characterized in that: described rotating shaft has axial rotating shaft through hole, and described optical fiber passes described rotating shaft through hole.
3. LED performance test case as claimed in claim 1, is characterized in that: the seal that described through hole is provided with in the isolation casing and casing is outer.
4. LED performance test case as claimed in claim 3, it is characterized in that: also comprise be used to the first rotary encoder that feeds back described the first electric machine rotation angle and be used for controlling the first controller that described the first motor rotates, the output signal end of described the first rotary encoder is electrically connected to described the first controller.
5. LED performance test case as claimed in claim 3, it is characterized in that: also comprise be used to the second rotary encoder that feeds back described the second electric machine rotation angle and be used for controlling the second controller that described the second motor rotates, the output signal end of described the second rotary encoder is electrically connected to described second controller.
6. described LED performance test case as arbitrary in claim 1 to 5, it is characterized in that: also comprise photometer, the second end of described optical fiber is connected with described photometer.
7. described LED performance test case as arbitrary in claim 1 to 5, it is characterized in that: also comprise the LED shaft collar, described LED shaft collar has at least two concentric circumference that are distributed with the LED fixed bit, the center of circle of described circumference is on the residing straight line of described rotating shaft, so that the described LED that aims at when electro-optical device rotates on each LED fixed bit that gets.
8. LED performance test case as claimed in claim 6 is characterized in that: described get electro-optical device can near or away from described LED shaft collar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220615934 CN202928782U (en) | 2012-11-20 | 2012-11-20 | LED performance test box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220615934 CN202928782U (en) | 2012-11-20 | 2012-11-20 | LED performance test box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202928782U true CN202928782U (en) | 2013-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220615934 Expired - Fee Related CN202928782U (en) | 2012-11-20 | 2012-11-20 | LED performance test box |
Country Status (1)
| Country | Link |
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| CN (1) | CN202928782U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102967446A (en) * | 2012-11-20 | 2013-03-13 | 深圳清华大学研究院 | LED (Light Emitting Diode) performance test box, calibrating method and performance test method |
-
2012
- 2012-11-20 CN CN 201220615934 patent/CN202928782U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102967446A (en) * | 2012-11-20 | 2013-03-13 | 深圳清华大学研究院 | LED (Light Emitting Diode) performance test box, calibrating method and performance test method |
| CN102967446B (en) * | 2012-11-20 | 2015-09-23 | 深圳清华大学研究院 | A kind of LED performance test case, scaling method and performance test methods |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20181120 |