CN108181574B - Drive board test system and test method - Google Patents
Drive board test system and test method Download PDFInfo
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- CN108181574B CN108181574B CN201711499658.1A CN201711499658A CN108181574B CN 108181574 B CN108181574 B CN 108181574B CN 201711499658 A CN201711499658 A CN 201711499658A CN 108181574 B CN108181574 B CN 108181574B
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Abstract
The invention discloses a drive board test system and a test method, wherein the drive board test system comprises a signal generator, an LED load, a current acquisition device and a control device; the control device sends a test instruction to the signal generator, the signal generator converts the received test instruction into a serial signal and outputs the serial signal to the to-be-tested drive board, the to-be-tested drive board drives the LED load to emit light according to the serial signal, the current collecting device collects corresponding current when the LED load emits light and feeds the current back to the control device, and the control device judges whether the to-be-tested drive board passes the test or not based on the current. The technical scheme of the invention improves the testing efficiency of the driving board.
Description
Technical Field
The invention relates to the technical field of televisions, in particular to a drive board testing system and a testing method.
Background
At present, with the rapid development of the television industry, the LED backlight technology is widely used due to its long life, power saving, energy saving, and convenient driving. Local Dimming (Local Dimming) is to divide the screen into several partitions, such as 16 partitions, 76 partitions, 288 partitions, 600 partitions, etc. Generally, the more the partitions are, the thinner the partitions are, the better the dimming effect is, in actual use, the brightness of each path of LED lamp is adjusted by providing an SPI (Serial Peripheral Interface) signal to the local dimming driving board through the motherboard end, and then directly controlling the local dimming driving board after demodulation.
The regional dimming drive board needs to be subjected to functional testing in actual production and then is provided for the next procedure for use, a real testing platform is built in a conventional method, backlight is directly lightened, and the testing mode is observed by human eyes.
Disclosure of Invention
The invention mainly aims to provide a drive plate testing system, aiming at improving the testing efficiency.
In order to achieve the above object, the driving board testing system provided by the present invention comprises a signal generator, an LED load, a current collecting device and a control device, wherein: the control device sends a test instruction to the signal generator, the signal generator converts the received test instruction into a serial signal and outputs the serial signal to a to-be-tested drive board, the to-be-tested drive board drives the LED load to emit light according to the serial signal, the current collecting device collects corresponding current when the LED load emits light and feeds the current back to the control device, and the control device judges whether the to-be-tested board passes the test or not based on the current.
Preferably, the determining, by the control device, whether the board to be tested passes the test based on the current is specifically:
and the control device acquires the light-emitting state of the corresponding LED load according to the current and judges whether the test board to be tested passes the test or not based on the light-emitting state.
Preferably, the LED loads are LED lamps arranged in a rectangular shape, and the driving board to be tested sequentially drives the LED lamps in the odd rows, the LED lamps in the even rows, the LED lamps in the odd columns and the LED lamps in the even columns of the LED loads to emit light according to the serial signals;
the control device acquires the light emitting states of all the LED lamps driven to emit light, and judges whether the test board to be tested passes the test or not according to the light emitting states.
Preferably, the LED load is divided into a plurality of blocks in advance;
the control device sends a test instruction to the drive board to drive a preset path of LED lamp to emit light;
the current collecting device collects the current of the LED lamp driven to emit light and judges whether the value of the collected current is within a first preset current range or not; if so, taking the value of the acquired current as a current reference value;
the control device sends a test instruction to the drive board to drive each LED lamp to emit light, and total current of each LED lamp is collected respectively;
the control device calculates the current standard value of each block according to the current reference value and the number of LEDs in the block;
the control device judges whether the total current of the LED lamps in the block exceeds a second current preset range or not according to the current standard value and the total current of the LED lamps in the block;
if not, ending the test; and if so, positioning the abnormal LED lamp.
Preferably, the control device makes a difference between the total current of the LED lamps in the block and a current standard value corresponding to the total current, and judges whether the absolute value of the difference is smaller than the current reference value; when the difference value is smaller than the current reference value, ending the test; and when the difference value is larger than the current reference value, positioning the abnormal LED lamp.
The invention also provides a drive board testing method, which comprises the following steps:
the control device sends a test instruction to the signal generator;
the signal generator receives the test instruction, converts the test instruction into a serial signal and outputs the serial signal to a to-be-tested drive board;
the driving board to be tested drives the LED load to emit light according to the serial signal;
the current collecting device collects corresponding current when the LED load emits light and feeds the current back to the control device;
the control device judges whether the board to be tested passes the test or not based on the current.
Preferably, the determining, by the control device, whether the board to be tested passes the test based on the current specifically includes:
and the control device acquires the light-emitting state of the corresponding LED load according to the current and judges whether the test board to be tested passes the test or not based on the light-emitting state.
Preferably, the LED load is divided into a plurality of blocks in advance; after the step of obtaining the light emitting state of the LED load and judging whether the test board to be tested passes the test according to the light emitting state, the method further comprises the following steps:
acquiring a current reference value of each path of LED lamp;
the control device sends a test instruction to the drive board to drive each LED lamp to emit light, and total current of each LED lamp is collected respectively;
judging whether the total current of the LED lamps in the block is normal or not according to the current reference value and the total current of the LED lamps in the block;
if yes, ending the test; if not, the abnormal LED lamp is positioned.
Preferably, the obtaining the current reference value of each LED lamp includes:
the control device sends a test instruction to the drive board, and a preset path of LED lamps emits light at random;
the current collecting device collects the current of the LED lamp driven to emit light and judges whether the collected current value is within a first preset current range;
if yes, the current value is used as a current reference value.
Preferably, the determining whether the total current of the block LED lamps is normal according to the current reference value and the total current of the block LED lamps includes:
calculating the current standard value of each block according to the current reference value and the number of LEDs in the block;
judging whether the total current of the LED lamps in the block exceeds a second current preset range or not according to the current standard value and the total current of the LED lamps in the block;
if not, ending the test; if yes, judging that the total current of the LED lamp is abnormal, and positioning the abnormal LED lamp.
Preferably, the determining whether the total current of the LED lamps in the block exceeds the second preset current range according to the current standard value and the total current of the LED lamps in the block includes:
the control device makes a difference between the total current of the LED lamps in the block and the current standard value corresponding to the block, and judges whether the absolute value of the difference value is smaller than the current reference value or not; when the difference value is smaller than the current reference value, ending the test; and when the difference value is larger than the current reference value, positioning the abnormal LED lamp.
Preferably, the LED lamps of the LED load are arranged in a rectangular shape, and the driving board to be tested drives the LED load to emit light according to the serial signal includes:
and the driving board to be tested respectively drives the LED lamps in the odd rows, the LED lamps in the even rows, the LED lamps in the odd columns and the LED lamps in the even columns of the LED load to emit light in sequence according to the serial signals.
According to the technical scheme, the driving board testing system is formed by arranging the power panel, the signal generator, the LED load and the control device. The control device sends out a test instruction, and the test instruction is converted by the signal generator to obtain a serial signal for driving the LED load; the control device obtains the light emitting state of the LED load, and judges whether the test board to be tested passes the test or not according to the light emitting state. The technical scheme of the invention can automatically test the driving board without manually observing the LED lamp with eyes, thereby reducing the testing work intensity and improving the testing efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a functional block diagram of one embodiment of a driver board test system of the present invention;
FIG. 2 is a first flowchart of one embodiment of a method for testing a driver board of the present invention;
FIG. 3 is a detailed flowchart of S600 in FIG. 2;
FIG. 4 is a detailed flowchart of S800 in FIG. 2;
fig. 5 is a second flowchart of a method for testing a driver board according to an embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should be considered to be absent and not within the protection scope of the present invention.
The invention provides a drive board testing system.
Referring to fig. 1, in the embodiment of the present invention, the driving board testing system includes a signal generator 200, an LED load 300, a current collecting device 400, and a control device 500. In this embodiment, the driving board is used in a television with a local dimming function. The backlight of the television is divided into a plurality of areas, such as 16 partitions, 76 partitions, 288 partitions, 600 partitions and the like are common. There is a separate LED lamp in each zone.
The control device 500 sends a test command to the signal generator 200; the signal generator 200 receives the test instruction, converts the test instruction into a serial signal and outputs the serial signal to the drive board 600 to be tested; the driving board to be tested 600 drives the LED load 300 to emit light according to the serial signal; the current collecting device 400 collects a corresponding current when the LED load 300 emits light and feeds the current back to the control device 500, and the control device 500 determines whether the driver board to be tested passes the test based on the current.
In this embodiment, the drive test system fixes the drive plate 600 to be tested by the needle bed. It is easy to understand that the drive test system further comprises a power panel 100, and the power panel 100 is used for supplying power to the modules such as the signal generator 200, the LED load 300, the current collecting device 400, and the like.
In this embodiment, the control device 500 is a computer, and control software is installed in the computer. When testing, the user issues a test instruction through the test software. The signal generator 200 converts the test command to obtain a serial signal, and outputs the serial signal to the to-be-tested driver board 600, and the to-be-tested driver board 600 drives the LED load 300 to emit light. The current collecting device 400 feeds the collected current back to the control device 500, and the control device 500 judges whether the current of the board to be tested is abnormal according to the collected current, so as to know whether the board to be tested is abnormal.
During testing, the current collecting device 400 collects the current of each partitioned LED lamp.
According to the technical scheme, the power panel 100, the signal generator 200, the LED load 300 and the control device 500 are arranged, so that the drive board 600 test system is formed. The control device 500 sends a test instruction, and the test instruction is converted by the signal generator 200 to obtain a serial signal for driving the LED load 300; the control device 500 obtains the light emitting state of the LED load 300, and determines whether the board to be tested passes the test according to the light emitting state. According to the technical scheme, the driving board 600 can be automatically tested, the LED lamps are not required to be observed by human eyes, the testing work intensity is reduced, and the testing efficiency is improved.
Further, the control device 500 determines whether the driving board 600 to be tested passes the test based on the current specifically:
the control device 500 obtains the light emitting state of the corresponding LED load according to the current, and determines whether the driver board to be tested passes the test based on the light emitting state.
It is easy to understand that the control device 500 compares the current of the collected light-emitting LED with the preset current value range, and if the current is not in the preset current value range, it indicates that the LED lamp is abnormal.
Further, the control device 500 is respectively connected with the signal generator 200 and the driving board to be tested 600; the power panel 100 is respectively connected with the driving board 600 to be tested and the signal generator 200; the LED load 300 is connected with the board to be tested; the current collecting device 400 is connected to the control device 500 and the LED load 300, respectively.
It should be noted that the driving board 600 and the signal generator 200 are both provided with a power supply interface, a serial port, etc. for facilitating connection.
Further, the LED lamps of the LED load 300 are arranged in a rectangular shape, and the driving board 600 to be tested respectively drives the odd-numbered LED lamps, the even-numbered LED lamps, the odd-numbered LED lamps and the even-numbered LED lamps of the LED load 300 to emit light in sequence according to the serial signal; the control device 500 obtains the light emitting states of all the LED lamps driven to emit light, and determines whether the board to be tested passes the test according to the light emitting states.
In this embodiment, the LED lamps in the odd rows and the even rows are turned on first, and then the LED lamps in the odd columns and the even columns are driven to be turned on, and each LED lamp is turned on twice, so that the state of each LED lamp can be tested quickly and accurately, thereby testing the basic functions of the hardware of the driving board 600.
In this embodiment, the computer has the simulated LED lamps arranged in a matrix, which represent the actual LED lamps respectively. When the current collected by the current collecting device 400 is normal, the simulated LED lamp is green; and if one LED lamp current is abnormal, the corresponding simulated LED lamp is red. Therefore, which LED lamp presents a problem can be directly seen.
When all the LED lamps are normally lighted, the driving board to be tested 600 passes the basic function test.
After the basic function test of the driving board 600 is completed, in this embodiment, each maximum current output from the driving board 600 to the LED load 300 is further tested.
The control device 500 sends a test instruction to the driving board 600 to drive a preset path of LED lamps to emit light. In addition, one path of LED lamp can be randomly driven to detect the current.
The current collecting device 400 collects the current of the LED lamp driven to emit light and judges whether the collected current value is within a first preset current range; if so, taking the value of the collected current as a current reference value; if not, collecting the current of the LED lamp from the rest LEDs, judging whether the current is in a first preset current range, if so, taking the current as a current reference value, and if not, continuously collecting the current value by adopting the method until the current value in the first preset current range is collected.
The control device 500 sends a test instruction to the driving board 600 to drive the LED lamps of each block to emit light, and collects the total current of the LED lamps of each block respectively; the control device 500 calculates the current standard value of each block according to the current reference value and the number of LEDs in the block.
In this embodiment, a backlight in 288 regions is described. The 288 area has 288 LED lamps, and the 288 LED lamps are arranged in a matrix of 16 × 18. In this embodiment, the LED load 300 is divided into 18 blocks, each of which has 16 LED lamps.
The current collection device 400 collects the total current of the LED lamps (i.e., 16 LED lamps) in the block. And multiplying the current reference value by 16 to obtain a current standard value of the block, wherein the current standard value of the 18 blocks is used as the current standard value.
The control device 500 judges whether the total current of the LED lamps in the block exceeds a second current preset range according to the current standard value and the total current of the LED lamps in the block; if not, ending the test; and if so, positioning the abnormal LED lamp.
Specifically, the control device 500 makes a difference between the total current of the LED lamps in the block and the current standard value corresponding to the block, and determines whether the absolute value of the difference is smaller than the current reference value; when the difference value is smaller than the current reference value, ending the test; and when the difference value is larger than the current reference value, positioning the abnormal LED lamp.
It should be noted that, the total current of the LED lamp in the block is subtracted from the current standard value corresponding to the block, the obtained difference value is an error value, the current reference value is used as a criterion for determining the error, and when the error is greater than the current reference value, it is determined that the current in the block is abnormal.
When the problem occurs, the LED lamp with the problem is further positioned. In this embodiment, a half-searching mode is adopted for positioning. For example, the block includes 16 LED lamps, when the total current of the block is abnormal, the 16 LED lamps are divided into two sub-blocks, each of which includes 8 LED lamps, and the total current of the 8 LED lamps in the two sub-blocks is collected by the above method. And multiplying the current reference value by 8 to obtain a current standard value of the current, subtracting the total current of the 8 LED lamps from the corresponding current standard value, and judging whether the absolute value of the difference value is smaller than the current reference value. Therefore, the abnormal sub-block can be judged, and the position range of the abnormal LED lamp is narrowed. And a similar method is adopted, and further half-folding searching is carried out, and after the half-folding searching is carried out for multiple times, a specific LED lamp can be positioned to have a problem. And the LED lamp with the problem is fed back to display on a computer.
Based on the driving board 600 test system, the invention also provides a driving board 600 test method, which comprises the following steps:
s100, the control device 500 sends a test command to the signal generator 200;
s200, the signal generator 200 receives the test instruction, converts the test instruction into a serial signal and outputs the serial signal to the drive board 600 to be tested;
s300, the driving board 600 to be tested drives the LED load 300 to emit light according to the serial signals;
s400, the current collecting device collects corresponding current when the LED load emits light and feeds the current back to the control device;
s500, the control device judges whether the board to be tested passes the test or not based on the current.
Specifically, the determining, by the control device 500, whether the board to be tested passes the test based on the current specifically includes:
and the control device acquires the light-emitting state of the corresponding LED load according to the current and judges whether the test board to be tested passes the test or not based on the light-emitting state.
In this embodiment, the control device 500 compares the current of the collected light-emitting LED with the preset current value range, and if the current is not within the preset current value range, it indicates that the LED lamp is abnormal
Further, the LED load is divided into a plurality of blocks in advance; after the step of "obtaining the light emitting state of the LED load 300, and determining whether the board to be tested passes the test according to the light emitting state" further includes:
s600, acquiring a current reference value of each path of LED lamp;
s700, the control device 500 sends a test instruction to the drive board 600 to drive the LED lamps of each block to emit light, and the total current of the LED lamps of each block is collected respectively;
s800, judging whether the total current of the LED lamps in the block is normal or not according to the current reference value and the total current of the LED lamps in the block;
and S900, if not, positioning the abnormal LED lamp. If yes, the test is ended.
Specifically, the "acquiring a current reference value of each LED lamp" specifically includes:
s610, the control device 500 sends a test instruction to the driving board 600 to drive a preset path of LED lamps to emit light;
s620, the current collecting device 400 collects the current of the LED lamp driven to emit light and judges whether the collected current value is in a first preset current range;
and S630, if so, taking the current value as a current reference value.
Specifically, the step of determining whether the total current of the block LED lamps is normal according to the current reference value and the total current of the block LED lamps includes:
s810, calculating a current standard value of each block according to the current reference value and the number of LEDs in the block;
s820, judging whether the total current of the LED lamps in the block exceeds a second current preset range or not according to the current standard value and the total current of the LED lamps in the block;
s830, if not, ending the test; and if so, positioning the abnormal LED lamp.
Specifically, the step of determining whether the total current of the LED lamps in the block exceeds the second preset current range according to the current standard value and the total current of the LED lamps in the block includes:
the control device 500 makes a difference between the total current of the LED lamps in the block and the current standard value corresponding to the block, and determines whether the absolute value of the difference is smaller than the current reference value; when the difference value is smaller than the current reference value, ending the test; and when the difference value is larger than the current reference value, positioning the abnormal LED lamp.
Specifically, the LED lamps of the LED load 300 are arranged in a rectangular shape, and the step of driving the LED load 300 to emit light by the driving board to be tested 600 according to the serial signal specifically includes:
the driving board to be tested 600 sequentially drives the LED lamps in the odd rows, the LED lamps in the even rows, the LED lamps in the odd columns, and the LED lamps in the even columns of the LED load 300 to emit light according to the serial signal.
In summary, referring to fig. 5, the technical solution of the present invention is further described with reference to the specific embodiment.
In an embodiment, the specific flow steps of the driving board testing method are as follows:
s1, sending a command to the signal generator by the PC (computer), turning ON the P _ ON power supply, and starting the signal controller to work;
s2, the PC sends a command to the signal generator, and the odd-row LED lamps are turned on;
s3, the PC acquires the lighting state of the LED lamp;
s4, judging whether the number of the lighted lamps is consistent with the preset number; if yes, go to step S5; if not, go to step S21;
s5, the PC sends a command to the signal generator, and the odd-numbered LED lamps are turned on;
s6, the PC acquires the lighting state of the LED lamp;
s7, judging whether the number of the lighted lamps is consistent with the preset number; if yes, go to step S8, otherwise, go to step S21;
s8, the PC sends a command to the signal generator, and the LED lamps in the even rows are turned on;
s9, the PC acquires the lighting state of the LED lamp;
s10, judging whether the number of the lighted lamps is consistent with the preset number; if yes, go to step S8, otherwise, go to step S21;
s11, the PC sends a command to the signal generator, and the even-numbered LED lamps are turned on;
s12, the PC acquires the lighting state of the LED lamp;
s13, judging whether the number of the lighted lamps is consistent with the preset number; if yes, go to step S8, otherwise, go to step S21;
s14, PC sends command to signal generator, lights one LED lamp at random
S15, collecting the current of the path;
s16, judging whether the current is in an error range; if yes, entering step S17, otherwise, looping steps S14 to S16 until the acquired current is within the error range;
s17, the PC sends a command to the driving board to light n paths of backlight;
s18, whether the n-path current is within an error range; if not, go to step S19; if yes, ending the test;
s19, lighting n/2 paths of backlight by a binary search algorithm;
s20, judging whether the n/2 current is in the error range; if yes, continuing to search by half; if not; proceeding to step S21;
s21, positioning the abnormal position;
and S22, recording the test data.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. The utility model provides a drive plate test system which characterized in that, includes signal generator, LED load, current acquisition device and controlling means, wherein: the control device sends a test instruction to the signal generator, the signal generator converts the received test instruction into a serial signal and outputs the serial signal to a to-be-tested drive board, the to-be-tested drive board drives the LED load to emit light according to the serial signal, the current collecting device collects corresponding current when the LED load emits light and feeds the current back to the control device, and the control device judges whether the to-be-tested drive board passes the test or not based on the current;
the LED load is divided into a plurality of blocks in advance;
the current acquisition device acquires a current reference value of each path of LED lamp;
the control device sends a test instruction to the to-be-tested drive board to drive each block of LED lamps to emit light and respectively collects the total current of each block of LED lamps;
judging whether the total current of the LED lamps in the block is normal or not according to the current reference value and the total current of the LED lamps in the block;
if yes, ending the test; if not, the abnormal LED lamp is positioned.
2. The drive board testing system of claim 1, wherein the control means determines whether the drive board to be tested passes the test based on the current by:
and the control device acquires the light-emitting state of the corresponding LED load according to the current and judges whether the driver board to be tested passes the test or not based on the light-emitting state.
3. The drive board testing system according to claim 1, wherein the LED loads are LED lamps arranged in a rectangular shape, and the drive board to be tested sequentially drives the odd-numbered rows of LED lamps, the even-numbered rows of LED lamps, the odd-numbered columns of LED lamps, and the even-numbered columns of LED lamps of the LED loads to emit light according to the serial signals;
the control device acquires the light emitting states of all the LED lamps driven to emit light, and judges whether the test board to be tested passes the test or not according to the light emitting states.
4. The driver board testing system according to claim 1, wherein the control device sends a test command to the driver board to drive a preset path of LED lamps to emit light;
the current collecting device collects the current of the LED lamp driven to emit light and judges whether the value of the collected current is within a first preset current range or not; if so, taking the value of the acquired current as a current reference value;
the control device sends a test instruction to the drive board to drive each LED lamp to emit light, and total current of each LED lamp is collected respectively;
the control device calculates the current standard value of each block according to the current reference value and the number of LEDs in the block;
the control device judges whether the total current of the LED lamps in the block exceeds a second current preset range or not according to the current standard value and the total current of the LED lamps in the block;
if not, ending the test; and if so, positioning the abnormal LED lamp.
5. The driver board testing system of claim 4, wherein the control means differentiates the total current of the block LED lamps from the corresponding current standard values, and determines whether the absolute value of the difference is less than the current reference value; when the absolute value of the difference is smaller than the current reference value, ending the test; and when the absolute value of the difference value is larger than the current reference value, positioning the abnormal LED lamp.
6. A method for testing a driver board, the method comprising:
the control device sends a test instruction to the signal generator;
the signal generator receives the test instruction, converts the test instruction into a serial signal and outputs the serial signal to a to-be-tested drive board;
the driving board to be tested drives the LED load to emit light according to the serial signal;
the current collecting device collects corresponding current when the LED load emits light and feeds the current back to the control device;
the control device judges whether the drive plate to be tested passes the test or not based on the current;
the LED load is divided into a plurality of blocks in advance; after the step that the control device judges whether the drive plate to be tested passes the test or not based on the current, the method further comprises the following steps:
acquiring a current reference value of each path of LED lamp;
the control device sends a test instruction to the to-be-tested drive board to drive each block of LED lamps to emit light and respectively collects the total current of each block of LED lamps;
judging whether the total current of the LED lamps in the block is normal or not according to the current reference value and the total current of the LED lamps in the block;
if yes, ending the test; if not, the abnormal LED lamp is positioned.
7. The method for driving board testing as claimed in claim 6, wherein said obtaining a current reference value for each LED lamp comprises:
the control device sends a test instruction to the drive board to drive a preset path of LED lamp to emit light;
the current collecting device collects the current of the LED lamp driven to emit light and judges whether the collected current value is within a first preset current range;
if yes, the current value is used as a current reference value.
8. The method for testing the driver board according to the claim 7, wherein the determining whether the total current of the block LED lamps is normal according to the current reference value and the total current of the block LED lamps comprises:
calculating the current standard value of each block according to the current reference value and the number of LEDs in the block;
judging whether the total current of the LED lamps in the block exceeds a second current preset range or not according to the current standard value and the total current of the LED lamps in the block;
if not, ending the test; if yes, judging that the total current of the LED lamp is abnormal, and positioning the abnormal LED lamp.
9. The method for testing the driver board according to the claim 8, wherein the determining whether the total current of the block LED lamps exceeds the second preset current range according to the current standard value and the total current of the block LED lamps comprises:
the control device makes a difference between the total current of the LED lamps in the block and the current standard value corresponding to the block, and judges whether the absolute value of the difference value is smaller than the current reference value or not; when the absolute value of the difference is smaller than the current reference value, ending the test; and when the absolute value of the difference value is larger than the current reference value, positioning the abnormal LED lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711499658.1A CN108181574B (en) | 2017-12-29 | 2017-12-29 | Drive board test system and test method |
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| JP4168558B2 (en) * | 1999-11-29 | 2008-10-22 | カシオ計算機株式会社 | Integrated circuit board |
| JP2010266220A (en) * | 2009-05-12 | 2010-11-25 | Ricoh Co Ltd | Inspection apparatus |
| KR20100137952A (en) * | 2009-06-24 | 2010-12-31 | 마이크로 인스펙션 주식회사 | Apparatus for inspecting circuit board mounted driver ic and method thereof |
| CN202110791U (en) * | 2011-06-22 | 2012-01-11 | 天通浙江精电科技有限公司 | Test drive board of multifunctional LED backlight |
| CN102866346B (en) * | 2012-09-14 | 2014-12-10 | 京东方科技集团股份有限公司 | Platform and method for testing light-emitting diode (LED) array drive efficiency |
| CN203102810U (en) * | 2013-01-31 | 2013-07-31 | 京东方科技集团股份有限公司 | Driving chip performance comparison device |
| CN104950239B (en) * | 2014-03-25 | 2019-06-07 | 深圳市海洋王照明工程有限公司 | A kind of backlight drive detection circuit |
| CN205015449U (en) * | 2015-09-30 | 2016-02-03 | 深圳Tcl数字技术有限公司 | Be shaded and adjust test system |
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