CN220509688U - Vehicle-mounted Display EOL automatic detection system - Google Patents
Vehicle-mounted Display EOL automatic detection system Download PDFInfo
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- CN220509688U CN220509688U CN202321866334.8U CN202321866334U CN220509688U CN 220509688 U CN220509688 U CN 220509688U CN 202321866334 U CN202321866334 U CN 202321866334U CN 220509688 U CN220509688 U CN 220509688U
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- 238000001514 detection method Methods 0.000 title claims abstract description 37
- 230000008054 signal transmission Effects 0.000 claims abstract description 5
- 238000004088 simulation Methods 0.000 claims description 14
- 238000004891 communication Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims 2
- 238000009434 installation Methods 0.000 abstract description 2
- 238000012827 research and development Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 230000011664 signaling Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000008569 process Effects 0.000 description 1
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Abstract
The utility model provides a vehicle-mounted Display EOL automatic detection system, which comprises an analog host, a Display module and a PC terminal, wherein the analog host is externally connected with HDMI input signals and used for RGB TFT detection, and the Display module is connected with the analog host through Fakra/Hsd Lvds Connetor and Lvds and used for realizing IIC signal, PWM signal and interrupt signal transmission. All functions related to the display screen can be detected, and the function detection is comprehensive; the equipment is simple to connect, stable in input and output and high in stability; the function automatic detection is realized by sending an instruction through the PC, and the operation is simple; the automatic detection is realized, and the personnel investment is reduced; the equipment has the advantages of independent research and development, low cost, strong portability and easy installation.
Description
Technical Field
The utility model relates to the technical field of automatic detection of functions of screens in an automobile automatic test system, in particular to a vehicle-mounted Display EOL automatic detection system.
Background
The more Display functions in automobiles in recent years are more and more, the more information is displayed, the higher the detection technical requirements on an automatic test system are, the more and more profound the meaning of the automatic test detection system with rapidness and simpleness to an automobile enterprise is, so that the automatic test of Display EOL is extremely important.
The detection methods commonly used at present for the vehicle-mounted display screen of the factory include the following methods:
(1) and detecting a host sample: and connecting the screen through a host sample, and checking whether the brightness and the color of the display screen meet the specifications.
(2) The video signal generator detects: the video signal generator is connected with the display screen, signal parameters such as a pixel clock, a frame rate and the like are set and input into the vehicle-mounted display screen, and the response characteristic and the performance of the display screen are confirmed by observing the output result.
In these common detection methods, the display content of the host sample in the method (1) cannot be customized, the brightness of the easily-caused partial area is covered up, the judgment of the quality of the display screen is affected, and special equipment is required for testing the function of some display screens, so that the test cannot be performed by completely depending on the host sample. Although the video signal generator of the method (2) can provide the required display data and the display content can be customized, the method does not contain signals such as IIC, PWM and the like, and cannot realize the detection of functions such as touch, key and the like. Meanwhile, the technical threshold for operating the video signal generator is high, and the equipment cost is high.
Disclosure of Invention
In order to solve the problems, the utility model provides the simulation host equipment with high detection speed, stable performance and low cost, and the vehicle-mounted Display EOL automatic detection system with comprehensive functions, which realizes the automatic detection of the Display EOL and reduces personnel investment.
The specific scheme is as follows:
vehicle-mounted Display EOL automatic detection system is characterized in that: the device comprises an analog host, a Display module and a PC terminal, wherein the analog host is externally connected with HDMI input signals and used for RGB TFT detection, and the Display module is connected with the analog host through Fakra/Hsd Lvds connector and Lvds and used for realizing IIC signal, PWM signal and interrupt signal transmission.
The PC terminal sends a detection instruction, sends a request to the simulation host through the Ethernet, and the simulation host is connected with the Display module through the Lvds and is used for realizing IIC signal transmission, carrying out data communication with the Display module through an IIC bus, realizing the backlight switch of a Display screen and the brightness control thereof, setting the Display mode of a TFT control screen, the detection of touch and key functions and the detection of key backlight, returning the result to the PC terminal, and printing the detection result at the PC terminal.
The system also comprises a POWER module for supplying POWER to the analog host and the Display module.
The utility model has the beneficial effects that:
1. all functions related to the display screen can be detected, and the function detection is comprehensive;
2. the equipment is simple to connect, stable in input and output and high in stability;
3. the function automatic detection is realized by sending an instruction through the PC, and the operation is simple;
4. automatic detection is realized, and personnel investment is reduced;
5. the equipment has the advantages of independent research and development, low cost, strong portability and easy installation.
Drawings
Fig. 1 is a schematic diagram of the present utility model.
Description of the embodiments
The present utility model is further illustrated in the following drawings and detailed description, which are to be understood as being merely illustrative of the utility model and not limiting the scope of the utility model.
As shown in the figure, the utility model provides a vehicle-mounted Display EOL automatic detection system which simulates an HDMI input signal externally connected with a host to detect TFTs such as RGB, color bars, gray scale gradation and the like. The analog host is connected with the Display module through Fakra/Hsd LVDS connector, and IIC communication and PWM adjustment can be performed. And after the on-screen electric starting initialization is completed and handshake with the simulation host is completed, waiting for PC terminal instruction operation. After receiving a brightness control command of the PC terminal, the simulation host machine outputs a fixed PWM value as the output of brightness level, and transmits the brightness control command to the display screen through LVDS to control brightness adjustment of the display screen; when the Touch is on the screen, the Display screen informs the simulation host through LVDS (low voltage differential signaling) by hard wire interruption, the simulation host receives interruption signals and reads the coordinates and the number of Touch points of the Display screen and the triggering mode of the Touch points through IIC, the simulation host returns analysis results to the PC terminal through Ethernet after the signal analysis is completed, the PC terminal prints Touch detection results, and meanwhile the HDMI signal is controlled to control the Display module to Display corresponding Touch effects. When a key is pressed down on the screen, the Display screen informs the simulator through LVDS (low voltage differential signaling) by hard wire interruption, the simulator receives an interruption signal and reads a key value signal of the key on the Display screen through IIC, the simulation host returns an analysis result to the PC terminal through Ethernet after the signal analysis is completed, the PC terminal prints a key detection result, and meanwhile the HDMI signal is controlled to control the Display module to Display a corresponding function effect of the key. The simulation host can read the software and hardware version number, partnumber, key key version number and the like of the Display module through the PC terminal instruction, the Display module replies related data and transmits the data to the simulation host through LVDS, and the simulation host transmits the returned information to the PC terminal through Ethernet.
The whole process of the utility model can realize the automatic detection of the Display EOL by only one PC terminal and one analog host. The detection operation is simple, the function is comprehensive and the efficiency is high.
The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.
Claims (3)
1. Vehicle-mounted Display EOL automatic detection system is characterized in that: the device comprises an analog host, a Display module and a PC terminal, wherein the analog host is externally connected with HDMI input signals and used for RGB TFT detection, and the Display module is connected with the analog host through Fakra/Hsd Lvds connector and Lvds and used for realizing IIC signal, PWM signal and interrupt signal transmission.
2. The on-board Display EOL automated inspection system of claim 1, wherein: the PC terminal sends a detection instruction, sends a request to the simulation host through the Ethernet, and the simulation host is connected with the Display module through the Lvds and is used for realizing IIC signal transmission, carrying out data communication with the Display module through an IIC bus, realizing the backlight switch of a Display screen and the brightness control thereof, setting the Display mode of a TFT control screen, the detection of touch and key functions and the detection of key backlight, returning the result to the PC terminal, and printing the detection result at the PC terminal.
3. The on-board Display EOL automated inspection system of claim 1, wherein: the system also comprises a POWER module for supplying POWER to the analog host and the Display module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321866334.8U CN220509688U (en) | 2023-07-17 | 2023-07-17 | Vehicle-mounted Display EOL automatic detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321866334.8U CN220509688U (en) | 2023-07-17 | 2023-07-17 | Vehicle-mounted Display EOL automatic detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220509688U true CN220509688U (en) | 2024-02-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321866334.8U Active CN220509688U (en) | 2023-07-17 | 2023-07-17 | Vehicle-mounted Display EOL automatic detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220509688U (en) |
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2023
- 2023-07-17 CN CN202321866334.8U patent/CN220509688U/en active Active
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