Test system of LED receiving card

Abstract

The utility model discloses a test system of an LED receiving card, which comprises an FPGA module, an MCU module and an Ethernet transceiver module, the FPGA module is in communication connection with the Ethernet transceiver module, the MCU module is in bidirectional communication with the FPGA module, and the FPGA module can receive a control instruction and test data sent by a tester through the MCU module; the FPGA module is also connected with an LED receiving card to be tested, and the FPGA module is used for generating a specific test signal according to the control instruction and the test data, sending the tested test signal to the LED receiving card to be tested through the Ethernet transceiver module, receiving feedback information of each port of the LED receiving card, and sending the feedback information to the LED receiving card to be tested through the Ethernet transceiver module. And analyzing the feedback information to determine whether the LED receiving card operates normally, and obtaining a test result.

Description

Technical Field

[0001] This utility model relates to a testing system for LED receiver cards. Background Technology

[0002] In recent years, LED display technology has been widely used in many fields such as advertising, entertainment, and information dissemination due to its high brightness, low power consumption, and long lifespan. With the continuous expansion of the market, the demand for LED receiver cards, as a key component of LED display systems, is also continuously increasing.

[0003] As the production volume of LED receiver cards increases, economies of scale gradually emerge, leading to reduced production costs. However, in this process, product quality control and testing become key factors affecting cost and efficiency. Traditionally, LED receiver card testing relies primarily on manual operation. Specifically, testers need to connect each receiver card to an LED screen and observe the displayed content to determine if the receiver card is functioning correctly. This method has the following limitations: Low efficiency: Manual testing is cumbersome and slow, making it difficult to meet the needs of large-scale production. High cost: Reliance on a large workforce increases labor costs. Inaccuracy: Manual testing is susceptible to subjective factors, leading to misjudgments and omissions, affecting product quality. Given the shortcomings of existing testing methods in terms of efficiency, cost, and accuracy, developing a system capable of automatically testing the quality of LED receiver cards is particularly urgent. Utility Model Content

[0004] In view of the above problems, this utility model provides a testing system for LED receiver cards that can be automatically tested.

[0005] This invention provides a testing system for an LED receiver card, comprising: an FPGA module, an MCU module, and an Ethernet transceiver module. The FPGA module is communicatively connected to the Ethernet transceiver module, and the MCU module communicates bidirectionally with the FPGA module. Through the MCU module, the FPGA module can receive control commands and test data issued by the tester. The FPGA module is also connected to the LED receiver card under test. The FPGA module generates specific test signals based on the control commands and test data, and sends the measured test signals to the LED receiver card under test through the Ethernet transceiver module. It also receives feedback information from each port of the LED receiver card, analyzes the feedback information to determine whether the LED receiver card is operating normally, and obtains the test results.

[0006] In some embodiments, an offline display device is also included, which is connected to the MCU module. The FPGA module sends the measured test results to the MCU module, and the MCU module sends the test results to the offline display device.

[0007] In some embodiments, a level conversion module is also included, which is connected between the FPGA module and the LED receiver card under test.

[0008] In some embodiments, a buzzer is also included, which is connected to the FPGA module.

[0009] In some embodiments, the MCU module can also be connected to a PC via a USB interface.

[0010] In the technical solution of this utility model embodiment, the FPGA module, MCU module, and Ethernet transceiver module work together to automatically test and diagnose LED receiver cards. The Ethernet module, in conjunction with the FPGA module, enables more reliable communication with the LED receiver card under test. The FPGA module and MCU module work together to establish a test channel between the tester and the LED receiver card under test. That is, the MCU module acts as an intermediary to transmit control commands and test data sent from the PC to the FPGA module to execute complex test tasks, thereby realizing automatic, reliable, and fast testing of LED receiver cards.

[0011] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0012] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0013] Figure 1 This is a schematic diagram of the structure of the LED receiver card test system in some embodiments of this utility model. Detailed Implementation

[0014] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0015] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention; the terms "comprising" and "having" and any variations thereof in the specification, claims and foregoing description of the invention are intended to cover non-exclusive inclusion.

[0016] In the description of the embodiments of this utility model, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this utility model, "multiple" means two or more, unless otherwise explicitly defined.

[0017] In this document, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. In the description of embodiments of the present invention, the term "plural" refers to two or more (including two).

[0018] This application provides solutions in view of the above-mentioned problems, such as Figure 1 As shown, this utility model provides a testing system for an LED receiver card, including: an FPGA module 10, an MCU module 20, and an Ethernet transceiver module 30. The FPGA module 10 is communicatively connected to the Ethernet transceiver module 30, and the MCU module 20 communicates bidirectionally with the FPGA module 10. Through the MCU module 20, the FPGA module 10 can receive control commands and test data issued by the tester. The FPGA module 10 is also connected to the LED receiver card under test. The FPGA module 10 generates specific test signals based on the control commands and test data, and sends the measured test signals to the LED receiver card under test through the Ethernet transceiver module 30. It also receives feedback information from each port of the LED receiver card, analyzes the feedback information to determine whether the LED receiver card is operating normally, and obtains the test results.

[0019] Specifically, such as Figure 1As shown, the FPGA module 10 is connected to the MCU module, connected to the LED receiver card under test, and works with the Ethernet transceiver module to realize communication with the LED receiver card under test. Figure 1 The "simplified cow" in the diagram refers to the LED receiver card under test. The cooperation between the FPGA module 10 and the MCU module 20 makes the transmission of external control commands and the display of test results more convenient. As an intermediary module, the MCU module 20 not only simplifies the testing process but also improves the convenience and intuitiveness of the test, making it suitable for automated testing and on-site diagnostics.

[0020] Specifically, the test system based on the aforementioned LED receiver card can achieve the following test process: The MCU module 20 receives control commands and test data from external sources, such as a PC-based host computer software, and transmits these commands and data to the FPGA module 10. The FPGA module includes a test signal generation module, a signal transmission module, an interface output monitoring module, and a signal analysis and judgment module. The test signal generation module generates specific test signals using built-in logic resources and an Ethernet module. These signals simulate data transmission during actual operation. The signal transmission module sends the generated test signals to the LED receiver card via the Ethernet interface, ensuring the receiver card can receive and process these signals. After receiving the test signals, the LED receiver card outputs the signals through its various interfaces. The interface output monitoring module is responsible for collecting the output signals from these interfaces. The signal analysis and judgment module analyzes the collected signals to determine whether each interface is working as expected, thereby determining whether the LED receiver card is functioning correctly.

[0021] In some embodiments, the Ethernet transceiver module is composed of a YT8531C, supporting a maximum transmission and reception rate of 1000Mbps and supporting the RGMII interface. The MCU module is based on the AT32F407VGT7 microcontroller and has the following features: USB 2.0 connectivity: The module supports the USB 2.0 protocol, allowing direct connection to a PC via a USB interface, facilitating data transmission and the sending of control commands.

[0022] In some embodiments, an offline display device is also included, such as... Figure 1 The LCD module in the FPGA module is connected to the MCU module 20. The FPGA module 10 sends the measured test results to the MCU module 20, and the MCU module 20 sends the test results to the offline display device.

[0023] In some embodiments, a level conversion module is also included, connected between the FPGA module 10 and the LED receiver card under test. In some embodiments, the level conversion module is an SM245TS chip, which has the following functions: provides an 8-bit bidirectional data transmission line suitable for converting signals from one logic level to another; supports bidirectional data transmission, i.e., it can be used for both input and output; has three states that can be set to high, low, or high impedance as needed; has features that enhance the driving capability of the microcontroller, especially useful when driving high-power display devices (such as digital tubes or displays); includes pins for controlling the data transmission direction (DIR) and chip enable (OE); the SM245TS chip typically operates within a voltage range of 3 to 5 volts (ESDHBM: > 8KV). In this application, the SM245TS is used for level conversion, converting an external 5V level to a 3.3V level before inputting it to the FPGA. Furthermore, ESDHBM: > 8KV meets the interface ESD protection requirements, eliminating the need for additional ESD chips or TVS diodes.

[0024] In some embodiments, a buzzer is also included, which is connected to the FPGA module 10. When the FPGA module 10 analyzes and finds that one or more ports in the LED receiver card to be tested are abnormal, it controls the buzzer to sound and the offline display device displays the relevant test parameters.

[0025] In the technical solution of this utility model embodiment, the FPGA module 10, MCU module 20 and Ethernet transceiver module 30 cooperate with each other to automatically test and diagnose LED receiver cards. The Ethernet connection with the FPGA module 10 enables more reliable communication with the LED receiver card under test. The cooperation between the FPGA module 10 and the MCU module 20 establishes a test channel between the tester and the LED receiver card under test. That is, the MCU module 20 acts as an intermediary to transmit control commands and test data sent from the PC to the FPGA module 10 to execute complex test tasks, thereby realizing automatic, reliable and fast testing of LED receiver cards.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A testing system for an LED receiver card, characterized in that, include: The system comprises an FPGA module, an MCU module, and an Ethernet transceiver module. The FPGA module is communicatively connected to the Ethernet transceiver module, and the MCU module communicates bidirectionally with the FPGA module. Through the MCU module, the FPGA module can receive control commands and test data issued by the tester. The FPGA module is also connected to the LED receiver card under test. The FPGA module generates specific test signals based on the control commands and test data, and sends the measured test signals to the LED receiver card under test through the Ethernet transceiver module. It also receives feedback information from each port of the LED receiver card, analyzes the feedback information to determine whether the LED receiver card is operating normally, and obtains the test results.

2. The testing system for the LED receiver card according to claim 1, characterized in that, It also includes an offline display device, which is connected to the MCU module. The FPGA module sends the measured test results to the MCU module, and the MCU module sends the test results to the offline display device.

3. The testing system for the LED receiver card according to claim 1, characterized in that, It also includes a level conversion module, which is connected between the FPGA module and the LED receiver card under test.

4. The testing system for the LED receiver card according to claim 3, characterized in that, It also includes a buzzer, which is connected to the FPGA module.

5. The testing system for the LED receiver card according to claim 1, characterized in that, The MCU module can also be connected to a PC via a USB interface.

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