CN115979594A - Testing device for vehicle-mounted display screen - Google Patents
Testing device for vehicle-mounted display screen Download PDFInfo
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- CN115979594A CN115979594A CN202211715665.1A CN202211715665A CN115979594A CN 115979594 A CN115979594 A CN 115979594A CN 202211715665 A CN202211715665 A CN 202211715665A CN 115979594 A CN115979594 A CN 115979594A
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Abstract
The application provides a testing arrangement of on-vehicle display screen, a serial communication port, testing arrangement includes: the system comprises a first storage module, a first control module, a video conversion module, at least one serial communication module and target vehicle-mounted display screens corresponding to the serial communication modules one by one; the first storage module is connected with a first end of the first control module, a second end of the first control module is connected with a first end of the video conversion module, a second end of the video conversion module is connected with a first end of each serial communication module in the at least one serial communication module, and a second end of each serial communication module is connected with a corresponding target vehicle-mounted display screen. By the aid of the testing device, the vehicle-mounted display screen can be tested under the condition that related functions of the vehicle-mounted host are not developed, so that development speed can be increased, and development cost can be reduced.
Description
Technical Field
The application relates to the technical field of testing of vehicle-mounted display screens, in particular to a testing device of a vehicle-mounted display screen.
Background
Generally, in a vehicle, a vehicle-mounted display screen is generally connected with a vehicle-mounted host, and the vehicle-mounted host controls the vehicle-mounted display screen to realize corresponding functions. Therefore, in the process of performing early development on the vehicle-mounted display screen, in order to test a plurality of functions of the vehicle-mounted display screen, the vehicle-mounted host computer is generally connected with the vehicle-mounted display screen, and the vehicle-mounted host computer controls the vehicle-mounted display screen to realize corresponding functions, namely, to simulate the real-vehicle environment, so that other testing equipment is used for testing whether the functions of the vehicle-mounted display screen are normal under the simulated real-vehicle environment.
However, the testing method in the prior art needs to perform corresponding testing on the vehicle-mounted display screen after the development of the related functions of the vehicle-mounted host computer is completed, so that the development progress is greatly slowed down by the testing method, and in addition, the price of the vehicle-mounted host computer is relatively expensive, so that the development cost is greatly increased by the testing method.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a testing apparatus for a vehicle-mounted display, which can test the vehicle-mounted display even when the related functions of a vehicle-mounted host are not developed, thereby improving the development speed and reducing the development cost.
In a first aspect, an embodiment of the present application provides a testing apparatus for a vehicle-mounted display screen, the testing apparatus includes: the system comprises a first storage module, a first control module, a video conversion module, at least one serial communication module and target vehicle-mounted display screens corresponding to the serial communication modules one by one;
the first storage module is connected with a first end of a first control module, a second end of the first control module is connected with a first end of a video conversion module, a second end of the video conversion module is connected with a first end of each serial communication module in the at least one serial communication module, and a second end of each serial communication module is connected with a corresponding target vehicle-mounted display screen;
the first control module is used for acquiring image data from the first storage module and sending the image data to the video conversion module after the image data is acquired;
the video conversion module is used for carrying out format conversion on the acquired image data to obtain converted image data and sending the converted image data to the at least one serial communication module;
and the at least one serial communication module is used for sending the converted image data to a corresponding target vehicle-mounted display screen.
Optionally, the testing apparatus further comprises: the data transceiver module and the second control module;
the data transceiver module is connected with a first end of the second control module through CAN communication, and a second end of the second control module is connected with a third end of the first control module;
the second control module is used for sending the image switching instruction to the first control module after receiving the image switching instruction from the data transceiver module;
the first control module is used for analyzing the image information in the image switching instruction after receiving the image switching instruction, acquiring the preset image data corresponding to the image information from the first storage module, and sending the preset image data to the video conversion module after acquiring the preset image data.
Optionally, the testing apparatus further comprises: the buffer module comprises a first buffer module and a second buffer module;
the first control module is used for sequentially sending each frame of image data in the preset image data to the first buffer module and the second buffer module for alternate storage in each buffer period after the preset image data is obtained;
when the preset image data are sent to the second buffer module for storage from the beginning of the second buffer period, corresponding first preset image data are obtained from the first buffer module, and the first preset image data are sent to the video conversion module;
when the preset image data are sent to the first buffer module for storage, corresponding second preset image data are obtained from the second buffer module, and the second preset image data are sent to the video conversion module.
Optionally, the testing apparatus further comprises: the trigger module and the second storage module;
the trigger module is connected with a third end of the second control module;
the second storage module is connected with the fourth end of the first control module;
the second control module is used for sending an updating instruction to the first control module when the triggering operation of the user on the triggering module is detected;
and the first control module is used for acquiring new image data from the second storage module after receiving the updating instruction, sending the new image data to the first storage module, and updating the original image data in the first storage module by using the new image data.
Optionally, the testing apparatus further comprises: a display module;
the display module is connected with the fourth end of the second control module;
the first control module is used for sending an update completion signal to the second control module when the image data in the first storage module is detected to be updated;
and the second control module is used for controlling the display module to display after receiving the update completion signal so as to prompt the first storage module to complete the update.
Optionally, the second control module is configured to send a display screen control signal to the at least one serial communication module when receiving the display screen control signal from the data transceiver module;
and the at least one serial communication module is used for sending the display screen control signal to a corresponding target vehicle-mounted display screen after receiving the display screen control signal.
Optionally, the first control module is an FPGA chip.
Optionally, the first storage module is a FLASH chip.
Optionally, the second storage module is an SD chip.
Optionally, the first buffer module is a DDR2SDRAM chip, and the second buffer module is a DDR2SDRAM chip.
The testing device of the vehicle-mounted display screen provided by the embodiment of the application can simulate the vehicle-mounted host to control the vehicle-mounted display screen, so that the vehicle-mounted display screen can be tested under the condition that the related functions of the vehicle-mounted host are not developed, the development speed can be increased, and the development cost is reduced.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a schematic structural diagram illustrating a testing device for a vehicle-mounted display screen according to an exemplary embodiment of the present application;
FIG. 2 is a schematic structural diagram illustrating a testing device for a vehicle-mounted display screen according to another exemplary embodiment of the present application;
FIG. 3 is a schematic structural diagram illustrating a testing device for a vehicle-mounted display screen according to another exemplary embodiment of the present application;
FIG. 4 is a schematic structural diagram illustrating a testing device for a vehicle-mounted display screen according to still another exemplary embodiment of the present application;
fig. 5 shows a schematic structural diagram of a testing device for a vehicle-mounted display screen according to still another exemplary embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. Every other embodiment that can be obtained by a person skilled in the art without making creative efforts based on the embodiments of the present application falls within the protection scope of the present application.
Generally, in a vehicle, an on-board display screen is generally connected to an on-board host, and the on-board host controls the on-board display screen to implement a corresponding function. Therefore, in the process of performing early development on the vehicle-mounted display screen, in order to test a plurality of functions of the vehicle-mounted display screen, the vehicle-mounted host computer is generally connected with the vehicle-mounted display screen, and the vehicle-mounted host computer controls the vehicle-mounted display screen to realize corresponding functions, namely, to simulate the real-vehicle environment, so that other testing equipment is used for testing whether the functions of the vehicle-mounted display screen are normal under the simulated real-vehicle environment.
However, in the testing method in the prior art, the vehicle-mounted display screen can be correspondingly tested only after the related functions of the vehicle-mounted host computer are developed, the development progress is greatly slowed down by the testing method, and in addition, the development cost is greatly increased by the testing method because the price of the vehicle-mounted host computer is expensive.
Based on this, this application embodiment provides a testing arrangement of on-vehicle display screen, can improve development speed to reduce development cost.
Referring to fig. 1, fig. 1 is a schematic structural diagram illustrating a testing apparatus for a vehicle-mounted display screen according to an exemplary embodiment of the present disclosure;
as shown in fig. 1, the testing apparatus for a vehicle-mounted display screen provided in an embodiment of the present application includes: the system comprises a first storage module 10, a first control module 20, a video conversion module 30, at least one serial communication module and a target vehicle-mounted display screen corresponding to each serial communication module one by one;
the first storage module 10 is connected to a first end of a first control module 20, a second end of the first control module 20 is connected to a first end of a video conversion module 30, a second end of the video conversion module 30 is connected to a first end of each serial communication module of the at least one serial communication module, a second end of each serial communication module is connected to a corresponding target on-board display screen, for example, a serial communication module L1 is connected to a target on-board display screen M1, a serial communication module L2 is connected to a target on-board display screen M2, and a serial communication module Ln is connected to a target on-board display screen Mn.
As an example, the first control module 20 may be an FPGA chip, for example, the model of the FPGA chip may be EP4CE617C8 model. As an example, the first storage module 10 may be a FLASH chip, and as an example, the video conversion module 30 may be a DS90C189-Q chip, and as an example, the serial communication module may include a DS90UB948 chip and a MAX96737 chip, but the application is not limited thereto, and the serial communication module may also include other types of chips, for example, the serial communication module L1 may be a DS90UB948 chip, the serial communication module L2 may be a MAX96737 chip, and the serial communication module L3 may be another type of chip.
The first control module 20 is configured to obtain image data from the first storage module 10, and send the image data to the video conversion module 30 after obtaining the image data.
Here, the image data is a task desired to be displayed on the target in-vehicle display screen to complete detection of the display function of the target in-vehicle display screen. That is, after the image is displayed on the vehicle-mounted display screen, subsequent display function detection may be performed on the target vehicle-mounted display screen, for example, the subsequent display function detection may be to detect whether the vehicle-mounted display screen can normally display the image, or to detect whether the color of the image displayed on the vehicle-mounted display screen is normal, or the like.
The video conversion module 30 is configured to perform format conversion on the acquired image data, obtain converted image data, and send the converted image data to the at least one serial communication module. Here, the image data acquired by the video conversion module 30 is image data in RGB format, and the image data in RGB format may be converted into image data in LVDS format after the image data in RGB format is acquired by the video conversion module 30, as an example.
And the at least one serial communication module is used for sending the converted image data to a corresponding target vehicle-mounted display screen.
Here, each serial communication module is configured to send the converted image data to a deserializer on the corresponding target on-board display screen for deserializing through an FPD _ Link interface on the target on-board display screen.
After the target vehicle-mounted display screen obtains the image data after the deserialization, the image data can be displayed on the target vehicle-mounted display screen so as to complete the task of detecting the display function of the target vehicle-mounted display screen.
Here, through setting up a plurality of different serial communication modules, can test different on-vehicle display screens of target simultaneously to save test time.
Fig. 2 shows a schematic structural diagram of a testing device for a vehicle-mounted display screen according to another exemplary embodiment of the present application.
As shown in fig. 2, in an example, on the basis of fig. 1, additionally, the testing apparatus may further include: the data transceiver module is connected with a first end of the second control module 40 through CAN communication, and a second end of the second control module 40 is connected with a third end of the first control module 20. As an example, the data transceiver module may be a CAN bus transceiver, for example, the model of the CAN bus transceiver may be TJA1055, and the second control module 40 may be an MCU, for example, the model of the MCU may be S32K144.
Specifically, in the connection structure shown in fig. 2, the step of the first control module 20 acquiring the image data from the first storage module 10 and sending the image data to the video conversion module 30 after acquiring the image data may include:
the second control module 40 sends the image switching instruction to the first control module 20 after receiving the image switching instruction from the data transceiver module. Here, the image switching instruction includes image information of a desired switching image, and for example, the image information may include number information.
The first control module 20 is configured to, after receiving the image switching instruction, parse out image information in the image switching instruction, acquire predetermined image data corresponding to the image information from the first storage module 10, and after acquiring the predetermined image data, send the predetermined image data to the video conversion module 30.
When the image information includes the number information, the first control module 20, after receiving the image switching instruction, analyzes the number information in the image switching instruction, acquires the predetermined image data corresponding to the number information from the first storage module 10, and sends the predetermined image data to the video conversion module 30. For example, when the number information is 2 in 8 images in the image data stored in the first storage module 10, the first control module 20 acquires the 2 nd image (predetermined image data) from the first storage module 10, and sends the 2 nd image to the video conversion module 30.
Fig. 3 shows a schematic structural diagram of a testing device for a vehicle-mounted display screen according to another exemplary embodiment of the present application.
In one example, as shown in fig. 3, on the basis of fig. 2, additionally, the testing apparatus may further include: a first buffer module 60 and a second buffer module 70. As an example, the first buffer module 60 may be a DDR2SDRAM chip, and the second buffer module 70 may be a DDR2SDRAM chip.
Specifically, under the connection structure shown in fig. 3, the specific steps of the first control module 20 sending the predetermined image data to the video conversion module 30 after acquiring the predetermined image data may include:
after acquiring the predetermined image data, the first control module 20 sequentially sends each frame of image data in the predetermined image data to the first buffer module 60 and the second buffer module 70 for alternate storage in each buffer period, for example, in a first buffer period, the first frame of image data in the predetermined image data is sent to the first buffer module 60 for storage, in a second buffer period, the second frame of image data in the predetermined image data is sent to the second buffer module 70 for storage, in a third buffer period, the third frame of image data in the predetermined image data is sent to the first buffer module 60 for storage, in a fourth buffer period, the fourth frame of image data in the predetermined image data is sent to the second buffer module 70 for storage, and so on.
Each time predetermined image data is sent to the second buffer module 70 for storage, corresponding first predetermined image data is obtained from the first buffer module 60 and sent to the video conversion module 30, starting from the second buffer period, for example, in the second buffer period, when second frame image data in the predetermined image data is sent to the second buffer module 70 for storage, first frame image data in the predetermined image data is obtained from the first buffer module 60 and sent to the video conversion module 30.
Each time predetermined image data is sent to the first buffer module 60 for storage, corresponding second predetermined image data is obtained from the second buffer module 70 and sent to the video conversion module 30, for example, in a third buffer period, when third frame image data in the predetermined image data is sent to the first buffer module 60 for storage, second frame image data in the predetermined image data is obtained from the second buffer module 70 and sent to the video conversion module 30.
In addition, in the prior art, the on-board host is also generally used to control the screen of the on-board display, and therefore, it is generally necessary to test whether the corresponding signal communication function between the on-board display and the on-board host is normal when the on-board display is tested. In the prior art, under the condition that the corresponding control function of the vehicle-mounted host computer is not developed and completed, whether the corresponding signal communication function between the vehicle-mounted display screen and the vehicle-mounted host computer is normal or not can not be tested. Therefore, the application also provides a mode for testing whether the corresponding signal communication function between the vehicle-mounted display screen and the vehicle-mounted host computer is normal or not under the condition that the corresponding control function of the vehicle-mounted host computer is not developed and completed.
Referring to fig. 2 again, as shown in fig. 2, when receiving a display screen control signal from the data transceiver module, the second control module 40 sends the display screen control signal to the at least one serial communication module; here, the display control signal may include a control signal for adjusting the brightness of the display, a control signal for turning on the display, a control signal for turning off the display, a backlight control signal, and the like.
And the at least one serial communication module is used for sending the display screen control signal to a corresponding target vehicle-mounted display screen after receiving the display screen control signal.
In addition, in the process of detecting the display function of the target vehicle-mounted display screen, different detection requirements often exist, and therefore different batches of image data need to be acquired. For example, since the screen sizes of the in-vehicle display screens are different, when detecting the display functions of the in-vehicle display screens with various screen sizes, it is necessary to acquire a plurality of batches of image data, where each batch of image data may correspond to the display function of the in-vehicle display screen with one screen size; or, when the display functions of target vehicle-mounted display screens with the same screen size are detected, in order to test different test items, it is also necessary to acquire a plurality of batches of image data, where each batch of image data may be used to complete a task of detecting one item.
Therefore, in order to obtain a plurality of batches of image data, the present application also proposes a method of obtaining a plurality of batches of image data.
Referring to fig. 4, fig. 4 is a schematic structural diagram illustrating a testing apparatus for a vehicle-mounted display screen according to still another exemplary embodiment of the present application.
In one example, as shown in fig. 4, on the basis of fig. 2, additionally, the testing apparatus may further include: a trigger module 80 and a second storage module 90. As an example, the second memory module 90 may be an SD chip.
The trigger module 80 is connected to the third terminal of the second control module 40, and the second storage module 90 is connected to the fourth terminal of the first control module 20.
The second control module 40 is configured to send an update instruction to the first control module 20 when a triggering operation of the triggering module 80 by a user is detected;
the first control module 20 is configured to, after receiving the update instruction, obtain new image data from the second storage module 90, send the new image data to the first storage module 10, and update the original image data in the first storage module 10 with the new image data.
Here, the new image data stored in the second storage module 90 may be image data that is pre-stored by the tester and is required to be used for the test of the target vehicle-mounted display screen at this time. Here, the new image data may include at least one piece of image data.
In this manner, each time the tester taps the trigger module 80, a batch of image data may be obtained.
Fig. 5 shows a schematic structural diagram of a testing device for a vehicle-mounted display screen according to still another exemplary embodiment of the present application.
As shown in fig. 5, on the basis of fig. 4, additionally, the testing apparatus may further include: and a display module 110. As an example, the display module may be an LED lamp.
The display module 110 is connected with the fourth end of the second control module 40;
the first control module 20 is configured to send an update completion signal to the second control module 40 when detecting that the image data in the first storage module 10 is updated;
the second control module 40 is configured to control the display module 110 to display after receiving the update completion signal, so as to prompt that the update of the first storage module 10 is completed.
In this way, the tester can be prompted that the image data of the batch has been updated, and at this time, the tester can touch the trigger module 80 again to complete the power-off of the updating process.
The testing device of the vehicle-mounted display screen provided by the embodiment of the application can simulate the vehicle-mounted host to control the vehicle-mounted display screen, so that the vehicle-mounted display screen can be tested under the condition that the related functions of the vehicle-mounted host are not developed, the development speed can be increased, and the development cost is reduced.
While the present application has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present application as defined by the following claims.
Claims (10)
1. The utility model provides a testing arrangement of on-vehicle display screen which characterized in that, testing arrangement includes: the system comprises a first storage module, a first control module, a video conversion module, at least one serial communication module and target vehicle-mounted display screens corresponding to the serial communication modules one by one;
the first storage module is connected with a first end of a first control module, a second end of the first control module is connected with a first end of a video conversion module, a second end of the video conversion module is connected with a first end of each serial communication module in the at least one serial communication module, and a second end of each serial communication module is connected with a corresponding target vehicle-mounted display screen;
the first control module is used for acquiring image data from the first storage module and sending the image data to the video conversion module after the image data is acquired;
the video conversion module is used for carrying out format conversion on the acquired image data to obtain converted image data and sending the converted image data to the at least one serial communication module;
and the at least one serial communication module is used for sending the converted image data to a corresponding target vehicle-mounted display screen.
2. The testing device of claim 1, further comprising: the data transceiver module and the second control module;
the data transceiver module is connected with a first end of the second control module through CAN communication, and a second end of the second control module is connected with a third end of the first control module;
the second control module is used for sending the image switching instruction to the first control module after receiving the image switching instruction from the data transceiving module;
the first control module is used for analyzing the image information in the image switching instruction after receiving the image switching instruction, acquiring the preset image data corresponding to the image information from the first storage module, and sending the preset image data to the video conversion module after acquiring the preset image data.
3. The testing device of claim 2, further comprising: the buffer module comprises a first buffer module and a second buffer module;
the first control module is used for sequentially sending each frame of image data in the preset image data to the first buffer module and the second buffer module for alternate storage in each buffer period after the preset image data is obtained;
from the beginning of the second buffering period, when the preset image data are sent to the second buffering module for storage, corresponding first preset image data are obtained from the first buffering module, and the first preset image data are sent to the video conversion module;
when the preset image data are sent to the first buffer module for storage, corresponding second preset image data are obtained from the second buffer module, and the second preset image data are sent to the video conversion module.
4. The testing device of claim 2, further comprising: the trigger module and the second storage module;
the trigger module is connected with a third end of the second control module;
the second storage module is connected with the fourth end of the first control module;
the second control module is used for sending an updating instruction to the first control module when the triggering operation of the user on the triggering module is detected;
and the first control module is used for acquiring new image data from the second storage module after receiving the updating instruction, sending the new image data to the first storage module, and updating the original image data in the first storage module by using the new image data.
5. The testing device of claim 4, further comprising: a display module;
the display module is connected with the fourth end of the second control module;
the first control module is used for sending an update completion signal to the second control module when the image data in the first storage module is detected to be updated;
and the second control module is used for controlling the display module to display after receiving the update completion signal so as to prompt the first storage module to complete the update.
6. The testing device of claim 2, wherein the second control module is configured to send a display screen control signal to the at least one serial communication module when receiving the display screen control signal from the data transceiver module;
and the at least one serial communication module is used for sending the display screen control signal to a corresponding target vehicle-mounted display screen after receiving the display screen control signal.
7. The test device as claimed in any one of claims 1 to 6, wherein the first control module is an FPGA chip.
8. The test device of any one of claims 1-6, wherein the first storage module is a FLASH chip.
9. The test device as claimed in any one of claims 4 to 5, wherein the second memory module is an SD chip.
10. The test device of claim 3, wherein the first buffer module is a DDR2SDRAM chip and the second buffer module is a DDR2SDRAM chip.
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