CN111856315B - Screen test tool and test method - Google Patents
Screen test tool and test method Download PDFInfo
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- CN111856315B CN111856315B CN202010725348.2A CN202010725348A CN111856315B CN 111856315 B CN111856315 B CN 111856315B CN 202010725348 A CN202010725348 A CN 202010725348A CN 111856315 B CN111856315 B CN 111856315B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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Abstract
The invention relates to a screen test tool and a test method, wherein when a screen and the test tool are subjected to hot plug detection, after the screen is connected with the test tool, firstly, whether a communication contact of the test tool and a communication contact of the screen can normally communicate is tested, when normal communication cannot be performed, a tester is prompted to adjust, when normal communication can be performed, the screen is electrified, and the screen is lightened to perform other tests. Therefore, the problem of abnormal communication between the test tool and the screen is avoided, restarting of the tool is avoided, and efficiency is improved; poor contact is avoided, and the screen cannot be lightened to complete the test; short circuit between contacts is avoided, and screen or frock damage is avoided.
Description
Technical Field
The invention relates to the technical field of screen testing, in particular to a screen testing tool and a screen testing method.
Background
Screens are important electronic devices in electronic products that present information to and can interact with users, and thus, the quality of the screen plays an important role in the electronic products.
At present, due to globalization or price control, quality of a screen provider is uneven, and further, due to logistic transportation and the like, damage and breakage of a screen are possibly caused, and spot inspection cannot be completely detected, so that it is necessary to perform all inspection on the screen.
When multiple screens are inspected in sequence, there are two schemes:
1. installing a screen when the test tool is in a shutdown state, starting the test tool, checking, shutting down the test tool after checking, switching the next screen, and sequentially circulating. However, because the test tool needs to consume a certain time for starting up each time, the test method is low in efficiency.
2. When the test fixture is in a starting state, the screen is switched by hot plug, if the contact of the test fixture is not well connected with the contact of the screen, the problem of abnormal communication can occur, so that the system is abnormal, the system needs to be restarted, the transition from the starting to a kernel starting stage (kernel starting stage) usually takes more than 30 seconds, and if some systems are not well optimized or the loading items of the systems are more, more time is needed for restarting operation, so that the production line progress, the working progress and the enthusiasm of production line operators can be influenced. The screen is electrified under the condition of abnormal connection, and the situation of poor signal transmission can be caused, so that the screen is not bright, the test cannot be completed, and seriously, the situation of short circuit between contacts can be caused, so that the screen or a tool is damaged, and larger economic loss is caused.
The existing judgment of communication quality is carried out through a logic analyzer, but extra welding wires are needed on a tool, unsafe hidden danger is increased, and signal quality can be possibly affected. The purchase of a logic analyzer and the manual learning also require cost, and meanwhile, misoperation of workers can also occur, so that the situation of misjudgment of batch screens can occur.
Disclosure of Invention
The invention aims to provide a screen testing tool and a screen testing method, which are used for solving the technical problems that a hot plug switching screen is low in testing efficiency, incapable of being tested and damaged.
In order to achieve the above technical purpose, the present invention provides a screen testing method, comprising:
a screen testing method, comprising:
the testing tool sends testing instructions to corresponding communication contacts of a screen thermally connected with the testing tool through a plurality of communication contacts of the testing tool respectively;
the test tool judges whether the communication contact of the test tool receives the test data returned by the communication contact corresponding to the screen, and judges that the communication contacts cannot normally communicate when the communication contact of the test tool does not receive the test data returned by the communication contact corresponding to the screen.
According to the screen test method, when the test tool receives the test data returned by the communication contacts of the screen, whether the test data are normal or not is judged, if so, the group of communication contacts can normally communicate, if so, the abnormal communication contacts are controlled to send test instructions to the corresponding communication contacts of the screen again, and if the test data returned by the communication contacts of the screen are abnormal for a plurality of times, the group of communication contacts can not normally communicate.
According to the screen test method, when the communication contact cannot normally communicate, the test tool outputs the identification of the communication contact which cannot normally communicate.
According to the screen testing method, when the testing tool receives the testing data returned by the communication contact of the screen and is normal, the testing tool is judged to be capable of normally communicating with the screen, and the screen is controlled to be lightened.
According to the screen testing method, all communication contacts of the testing tool and the communication contacts corresponding to the screen can be tested for normal communication sequentially or synchronously.
A screen test fixture, comprising:
the test instruction storage unit is used for storing test instructions;
the test instruction sending unit is used for respectively sending the test instruction to the communication contacts corresponding to the screen thermally connected with the test tool through the communication contacts of the test tool;
and the control unit is used for judging whether the communication contact of the test tool receives the test data returned by the communication contact corresponding to the screen, and judging that the communication contacts cannot normally communicate when the communication contact of the test tool does not receive the test data returned by the communication contact corresponding to the screen.
According to the screen test tool, the control unit is further used for judging whether the test data are normal or not when the test data returned by the communication contacts of the screen are received, if so, judging that the group of communication contacts can normally communicate, if so, controlling the abnormal communication contacts to send test instructions to the communication contacts corresponding to the screen again, and if the test data returned by the communication contacts of the screen are abnormal, judging that the group of communication contacts cannot normally communicate.
The screen test fixture is characterized in that the control unit is further used for outputting the identification of the communication contact which cannot normally communicate when the communication contact cannot normally communicate.
According to the screen test fixture, the control unit is further used for judging that the test fixture and the screen can normally communicate when test data returned by the communication contact of the screen are received and are normal, and controlling the screen to be lightened.
According to the screen test tool, the control unit is used for controlling all communication contacts of the test tool to sequentially or synchronously perform the test of whether normal communication can be performed or not with the communication contacts corresponding to the screen.
The beneficial effects of the invention are as follows: when the screen and the test tool are subjected to hot plug detection, the screen is connected with the test tool, and then the test is firstly performed on whether the communication contact of the test tool and the communication contact of the screen can normally communicate, a tester is prompted to adjust when normal communication is not possible, and the screen is electrified and is lightened to perform other tests when normal communication is possible. Therefore, the problem of abnormal communication between the test tool and the screen is avoided, restarting of the tool is avoided, and efficiency is improved; poor contact is avoided, and the screen cannot be lightened to complete the test; short circuit between contacts is avoided, and screen or frock damage is avoided.
The screen test fixture can test whether the communication contact of the test fixture and the communication contact of the screen can normally communicate, prompts a tester to adjust when the communication contact of the test fixture and the communication contact of the screen cannot normally communicate, powers on the screen when the communication contact of the test fixture and the communication contact of the screen can normally communicate, and lights up the screen to perform other tests. Therefore, the problem of abnormal communication between the test tool and the screen is avoided, restarting of the tool is avoided, and efficiency is improved; poor contact is avoided, and the screen cannot be lightened to complete the test; short circuit between contacts is avoided, and screen or frock damage is avoided.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a screen test method according to an embodiment of the invention.
Fig. 2 is a schematic block diagram of a screen test fixture according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment provides a screen testing method which is suitable for hot plug of a screen in a starting state of a testing tool so as to realize quick switching of the screen and improve the detection efficiency of the screen. The hot plug of the screen is to directly plug the screen when the test fixture is in a starting state. The key point of the embodiment is that when the screen is inserted into the tool in the starting state, whether the communication contact of the test tool and the communication contact of the screen can normally communicate or not is tested, a tester is prompted to adjust when normal communication is not possible, and when normal communication is possible, the screen is electrified, and other tests are performed by lighting the screen.
The screen test method of the present embodiment is specifically described below:
the test fixture is thermally connected with the screen.
The test fixture hot connection screen is used for directly mounting the screen to be tested on the test fixture when the test fixture is powered on and started in a working state. Specifically, after the test fixture is powered on and started, a screen-off signal is output, the power supply of the test fixture output to the screen is disconnected, the screen is switched, the screen on the test fixture is taken down, and the screen to be tested is mounted to the test fixture. Of course, when the screen is switched, the screen to be tested can be directly mounted to the test tool under the condition that the screen is not arranged on the test tool.
The test fixture sends test instructions to corresponding communication contacts of the screen through a plurality of communication contacts of the test fixture.
The test fixture judges whether the communication contact of the test fixture receives the test data returned by the communication contact corresponding to the screen, and judges that the communication contacts cannot normally communicate when the communication contact of the test fixture does not receive the test data returned by the communication contact corresponding to the screen.
When the communication contacts cannot normally communicate, the test fixture outputs the identification of the communication contacts which cannot normally communicate, a tester checks whether the communication contacts are in poor contact according to the identification of the communication contacts, adjusts the screen contacts, and completes continuous testing until the communication test of the communication contacts is passed.
When the test fixture receives the test data returned by the communication contact of the screen and is normal, the test fixture is judged to be capable of normally communicating with the screen, the screen is controlled to be lightened, and other performance detection of the screen is carried out.
In this embodiment, all communication contacts of the test tool and the communication contacts corresponding to the screen sequentially perform a test on whether normal communication is possible.
For example, the test fixture has 8 groups of communication contacts connected with the screen, and the test fixture respectively comprises 8 data lines line data_0, line data_1, line data_2, line data_3, line data_4, line data_5, line data_6 and line data_7 connected with the communication contacts.
And sending a test instruction to the display driver integrated circuit DDIC of the screen by using the line data_0, and if the test data returned by the display driver integrated circuit DDIC of the screen is read to be normal, indicating that the communication is successful, and continuing the next group of line data_1 for testing.
If all 8 groups of line data_ [0..7] successfully acquire the data, the communication is successful, and the test is returned to pass.
If one group of lines does not receive data, the group of lines fails in communication, and the test is returned.
Of course, all communication contacts of the test fixture and the communication contacts corresponding to the screen can synchronously perform the test of whether normal communication is possible or not.
And synchronously using 8 data lines (line data_ [0..7 ]) to send a test instruction to the display driver integrated circuit DDIC of the screen, if the 8 groups of line data_ [0..7] all successfully acquire data, the communication is successful, and the test is returned to pass.
If one group of lines does not receive data, the group of lines fails to communicate, the identification of the group of lines is returned, for example, line data_1 does not pass through the received data, and line data_1 is returned.
In order to further judge whether communication of the communication contacts is normal or not, when test data returned by the communication contacts of the screen are received, the test fixture judges whether the test data are normal or not, if so, the communication contacts in the group can normally communicate, if so, the communication contacts in the abnormal control are used for sending test instructions to the communication contacts corresponding to the screen again, and if the test data returned by the communication contacts of the screen are abnormal continuously for many times, the communication contacts in the group can not normally communicate.
And when the test data returned by the screen is the same as the normal test data stored by the test tool, judging that the test data is normal, otherwise, judging that the test data is abnormal.
For example, the test fixture sends a test command 0x0A to the screen, and if the test data 0x9C returned by the display driver integrated circuit DDIC of the screen is read, the communication is successful. Of course, neither the test instructions nor the test data are limited to the examples described above.
As shown in fig. 1, the screen test method of the present embodiment includes the following steps:
s1, starting a test.
S2, installing and connecting the screen to the tool in the shutdown state.
And S3, powering on the tool, starting up, and performing performance test on the powering on of the screen to complete the test.
S4, powering off the screen, extinguishing the screen, and taking the tested screen off the tool.
S5, installing and connecting the next screen to be tested to the tool in the starting state.
S6, the test tool sends test instructions to corresponding communication contacts of the screen through a plurality of communication contacts of the test tool.
S7, the test tool judges whether the communication contact of the test tool receives test data returned by the communication contact corresponding to the screen. If yes, go to step S9, otherwise, go to step S8.
S8, judging that the communication contacts cannot normally communicate, and outputting the identification of the communication contacts which cannot normally communicate by the test tool.
S9, judging whether the test data are normal, if so, entering a step S10, otherwise, entering a step S11.
S10, judging that the group of communication contacts can normally communicate, and entering step S12.
S11, the communication contact which is abnormal is controlled to send a test instruction to the communication contact corresponding to the screen again, if the communication contact is normal, the step S10 is entered, and if the test data returned by the communication contact of the screen is abnormal continuously for many times, the step S8 is entered.
And S12, when all the communication contacts can normally communicate, controlling the screen to be electrified for performance test, and entering step S4 after the test is completed.
As shown in fig. 2, this embodiment further provides a screen test tool, including:
and the test instruction storage unit is used for storing the test instructions.
And the test instruction sending unit is used for respectively sending the test instruction to the communication contacts corresponding to the screen thermally connected with the test tool through the communication contacts of the test tool.
And the control unit is used for judging whether the communication contact of the test tool receives the test data returned by the communication contact corresponding to the screen, and judging that the communication contacts cannot normally communicate when the communication contact of the test tool does not receive the test data returned by the communication contact corresponding to the screen.
The control unit is also used for judging whether the test data are normal or not when the test data returned by the communication contacts of the screen are received, judging that the group of communication contacts can normally communicate if the test data are normal, controlling the abnormal communication contacts to send test instructions to the communication contacts corresponding to the screen again if the test data returned by the communication contacts of the screen are abnormal, and judging that the group of communication contacts cannot normally communicate if the test data returned by the communication contacts of the screen are abnormal for a plurality of times.
The control unit is also used for outputting the identification of the communication contact which cannot normally communicate when the communication contact cannot normally communicate.
And the control unit is also used for judging that the test fixture and the screen can normally communicate when the test data returned by the communication contact of the screen are all normal, controlling the screen to be lightened, and performing performance test on the screen.
The control unit is used for controlling all communication contacts of the test tool to sequentially or synchronously test whether normal communication can be performed with the communication contacts corresponding to the screen, and the test method is as described above.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. A screen testing method, comprising:
the test fixture hot connection screen is used for mounting the screen to be tested on the test fixture when the test fixture is powered on and started in the working state: after the test fixture is powered on and started, outputting a screen-off signal, disconnecting the power supply of the test fixture to the screen, switching the screen, taking down the screen on the test fixture, and mounting the screen to be tested to the test fixture;
the test tool sends test instructions to communication contacts corresponding to the screen to be tested, which is thermally connected with the test tool, through a plurality of communication contacts of the test tool respectively;
the test tool judges whether the communication contact of the test tool receives the test data returned by the communication contact corresponding to the screen to be tested, judges that the communication contacts cannot normally communicate when the communication contact of the test tool does not receive the test data returned by the communication contact corresponding to the screen to be tested, and outputs the identification of the communication contact which cannot normally communicate; when the test tool receives that the test data returned by the communication contact of the screen to be tested are normal, judging that the test tool and the screen to be tested can normally communicate, controlling the screen to be tested to be lightened, and carrying out performance detection of the screen to be tested.
2. The screen test method according to claim 1, wherein the test fixture judges whether the test data is normal or not when receiving the test data returned by the communication contacts of the screen to be tested, if so, judges that the group of communication contacts can normally communicate, if so, controls the abnormal communication contacts to send the test instruction to the communication contacts corresponding to the screen to be tested again, and if so, judges that the group of communication contacts cannot normally communicate.
3. The screen test method according to any one of claims 1-2, wherein all communication contacts of the test fixture and the communication contacts corresponding to the screen are tested for normal communication sequentially or synchronously.
4. A screen test fixture, its characterized in that includes:
the test instruction storage unit is used for storing test instructions;
the test instruction sending unit is used for respectively sending the test instruction to the communication contacts corresponding to the screen thermally connected with the test tool through the communication contacts of the test tool;
the control unit is used for controlling the test instruction sending unit to send the test instruction to the communication contacts corresponding to the screen thermally connected with the test tool through the communication contacts of the test tool respectively; the communication contact is used for judging whether the communication contact of the test tool receives the test data returned by the communication contact corresponding to the screen, judging that the communication contact cannot normally communicate when the communication contact of the test tool does not receive the test data returned by the communication contact corresponding to the screen, and outputting the identification of the communication contact which cannot normally communicate; the control unit is used for judging that the test tool and the screen to be tested can normally communicate when receiving that the test data returned by the communication contact of the screen to be tested are normal, controlling the screen to be tested to be lightened, and detecting the performance of the screen to be tested;
the test fixture hot connection screen is used for mounting the screen to be tested on the test fixture when the test fixture is powered on and started in the working state: after the test fixture is powered on and started, a screen-off signal is output, the power supply of the test fixture to the screen is disconnected, the screen is switched, the screen on the test fixture is taken down, and the screen to be tested is mounted to the test fixture.
5. The screen test fixture of claim 4 wherein the control unit is further configured to, when receiving test data returned by the communication contacts of the screen to be tested, determine whether the test data is normal, if so, determine that the set of communication contacts can communicate normally, and if so, control the abnormal communication contacts to send a test instruction to the communication contacts corresponding to the screen to be tested again, and if so, determine that the set of communication contacts cannot communicate normally.
6. The screen test fixture of any one of claims 4-5, wherein the control unit is configured to control all communication contacts of the test fixture to sequentially or synchronously perform a test of whether normal communication is possible with the communication contacts corresponding to the screen.
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| CN116303147A (en) * | 2023-05-11 | 2023-06-23 | 合肥联宝信息技术有限公司 | Method and device for detecting external equipment of computer |
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