Device burn-in test system

Abstract

The utility model discloses a kind of equipment aging test system, wherein, the equipment aging test system includes: test control terminal, testing device, multiple CAN repeaters and multiple to be tested equipment, the testing device is connected with the test control terminal and multiple CAN repeaters respectively, multiple CAN repeaters are connected with multiple to be tested equipment. The equipment aging test system of the utility model is controlled uniformly using test control terminal, connects multiple CAN repeaters by testing device, again by the architecture that CAN repeater connects multiple to be tested equipment, realizes the effective reuse of hardware resources. Compared with traditional "one-to-one" test mode, test control terminal and testing device do not need to be equipped separately for each to be tested equipment, greatly reduce hardware cost, improve test efficiency.

Description

Technical Field

[0001] This utility model relates to the field of equipment aging test technology, and in particular to an equipment aging test system. Background Technology

[0002] With the rapid development of automotive electronics technology, the cockpit domain controller, as one of the core control units inside a vehicle, has a crucial impact on the safety and comfort of the entire vehicle due to its performance and stability. Therefore, aging testing has become an indispensable part of the production and R&D process of cockpit domain controllers. Aging testing simulates long-term operation and extreme conditions to verify the durability and reliability of the controller, ensuring its stable operation in real-world use.

[0003] Traditional cockpit domain controller aging tests typically employ a "one-to-one" testing model, meaning each controller under test requires a separate computer and a CANOE (CAN Open Environment) tool for testing. Specifically, testers need to connect the test equipment individually to each cockpit domain controller for extended periods of operational monitoring and data recording. This testing method is adequate for testing a small number of controllers, but its shortcomings become particularly apparent when facing large-scale production, such as testing 50 controllers per batch. Specifically:

[0004] 1) High hardware costs: Each controller requires a separate computer and CANOE tools, leading to a significant increase in hardware costs. The procurement, maintenance, and upgrading of hardware equipment require a substantial investment of human, material, and financial resources.

[0005] 2) Complex test management: Testers need to manage multiple computers and CANOE tools simultaneously, making the testing process cumbersome and prone to errors. The collection, organization, and analysis of test data also become more complex and time-consuming.

[0006] 3) Inefficient testing: Due to limitations in testing equipment, testers cannot test all controllers simultaneously, leading to extended testing cycles. This low testing efficiency also impacts product time-to-market and market competitiveness. Utility Model Content

[0007] In view of the above-mentioned technical problems existing in the prior art, this utility model proposes an equipment aging test system to overcome at least one of the problems mentioned above.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] According to one aspect of the present invention, an equipment aging test system is provided, wherein the equipment aging test system includes: a test control terminal, a test device, multiple CAN repeaters, and multiple devices to be tested, wherein the test device is connected to the test control terminal and the multiple CAN repeaters respectively, and the multiple CAN repeaters are connected to the multiple devices to be tested.

[0010] Optionally, the multiple CAN repeaters are deployed as a distributed CAN repeater group.

[0011] Optionally, the test device is provided with at least one CAN bus channel, and the test device is connected to at least one CAN repeater group of the distributed structure through at least one CAN bus channel.

[0012] Optionally, the distributed CAN repeater group includes a master CAN repeater and a slave CAN repeater. The master CAN repeater is connected to the test device and the slave CAN repeater respectively, and the slave CAN repeater is also used to connect to multiple devices under test.

[0013] Optionally, each CAN repeater group of the distributed structure includes a master CAN repeater, and the master CAN repeater is connected to the test device and the slave CAN repeater respectively.

[0014] Optionally, each CAN repeater group of the distributed structure includes a slave CAN repeater, and the slave CAN repeater is connected to a master CAN repeater and multiple devices under test.

[0015] Optionally, the distributed CAN repeater group includes multiple slave CAN repeaters, each of which is connected to a master CAN repeater and multiple devices under test.

[0016] Optionally, the testing device includes CANOE testing software and CANOE testing hardware. The CANOE testing software is deployed on the test control terminal, and the CANOE testing hardware is connected to the test control terminal via USB.

[0017] Optionally, the device under test includes a cockpit domain controller.

[0018] Optionally, the equipment aging test system further includes an external display device, and multiple cockpit domain controllers are connected to the external display device.

[0019] In summary, the beneficial effects of this utility model are:

[0020] This utility model's equipment aging test system includes: a test control terminal, a test device, multiple CAN repeaters, and multiple devices under test. The test device is connected to both the test control terminal and the multiple CAN repeaters, and the multiple CAN repeaters are connected to the multiple devices under test. This equipment aging test system employs a unified control architecture via a test control terminal, connecting multiple CAN repeaters through the test device, and then connecting the multiple devices under test through the CAN repeaters, thus achieving effective reuse of hardware resources. Compared to the traditional "one-to-one" testing mode, it eliminates the need for a separate test control terminal and test device for each device under test, significantly reducing hardware costs and improving testing efficiency. Attached Figure Description

[0021] Figure 1 A schematic diagram of the structure of a prior art equipment aging test system is shown;

[0022] Figure 2 A schematic diagram of the structure of an equipment aging test system according to this utility model is shown;

[0023] Figure 3 A schematic diagram of another equipment aging test system of this utility model is shown. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] To facilitate understanding of the present invention, the main technical terms involved in the present invention will be introduced first:

[0028] (1) CAN: Controller Area Network, a message-based communication protocol for multiple controllers.

[0029] (2) CANOE: It is a powerful network simulation and testing tool that is widely used in the automotive, industrial, aerospace and other fields.

[0030] (3) CAN Repeater: A CAN repeater is a device used to extend a CAN bus network, especially when communicating between multiple devices over long distances. It can effectively improve signal stability and transmission distance. Its main function is to amplify and forward signals, ensuring that signals can propagate smoothly between different parts of the physical network and reducing signal attenuation and interference.

[0031] Figure 1 The diagram shows a structural schematic of a device aging test system in the prior art. When performing aging tests on devices such as domain controllers, the prior art adopts a "one-to-one" approach, namely "one computer + one CANOE + one domain controller". This approach limits the number of domain controllers that can be tested in each batch and requires high hardware costs.

[0032] Based on this Figure 2 The diagram shows a structural schematic of an equipment aging test system according to the present invention. The equipment aging test system of the present invention includes: a test control terminal, a test device, multiple CAN repeaters, and multiple devices to be tested. The test device is connected to the test control terminal and the multiple CAN repeaters respectively, and the multiple CAN repeaters are connected to the multiple devices to be tested.

[0033] Figure 2 The overall architecture of the device aging test system shown consists of a test control terminal, a test device, multiple CAN repeaters, and multiple devices under test. The test control terminal, acting as the "brain" of the entire system, is responsible for issuing test commands, receiving and analyzing test data; this can be achieved using a computer or other terminal device. The test device serves as a "bridge" between the test control terminal and the CAN repeaters, enabling signal conversion and transmission. Multiple CAN repeaters play a crucial role in signal distribution and centralization, accurately transmitting signals from the test device to the devices under test. The devices under test are the objects being tested; in this system, they are primarily designed for various devices requiring aging tests, such as cockpit domain controllers in the automotive electronics field.

[0034] In practical setup, the test control terminal is connected to the test device. Depending on the interface type of the test device, a connection method such as CAN bus can be used. The test device is then connected to multiple CAN repeaters to ensure connection stability and signal transmission accuracy. Multiple devices under test are connected to their corresponding CAN repeaters to form a complete device aging test system network.

[0035] The test control terminal is equipped with dedicated test management software, which allows testers to set test parameters such as test time, test signal type, and frequency. The test control terminal sends test commands to the test device via a specific communication protocol. Upon receiving the commands, the test device converts them into a signal format suitable for transmission on the CAN bus and then sends them to the CAN repeater.

[0036] The testing device possesses signal conversion and transmission capabilities. It can convert different types of signals (such as computer command signals) emitted by the test control terminal into CAN bus signals for transmission on the CAN bus. The testing device connects to multiple CAN repeaters through its designated CAN bus channels. During testing, the testing device sends test signals to the CAN repeaters via the CAN bus channels according to the instructions from the test control terminal. The CAN repeaters then further distribute the signals to the connected devices under test.

[0037] The primary function of a CAN repeater is to expand the number of devices under test (DUTs) that can be connected to an existing test setup. It receives signals from the test setup, processes them, and then sends them to the next node (which could be another CAN repeater or a DUT). Each CAN repeater can connect to multiple DUTs. When a test signal is received, the CAN repeater distributes the signal to the connected DUTs according to preset rules.

[0038] After receiving the test signal, the device under test (DUT) operates according to the signal's requirements, simulating various working conditions in actual use. For example, if it is a cockpit domain controller, it may simulate vehicle startup, operation, and switching of various functions. During operation, the DUT monitors its own status parameters in real time, such as temperature, voltage, and current, and outputs these parameters.

[0039] It should be noted that the multiple CAN repeaters set in the equipment aging test system of this utility model can be regarded as multiple equivalent relay nodes, and there is no difference between them. Therefore, the device under test does not need to send back the test results after executing the test command, which is different from the traditional bidirectional process based on CAN communication.

[0040] This utility model's equipment aging test system adopts a unified control architecture via a test control terminal. Multiple CAN repeaters are connected to the test device, and then the CAN repeaters connect to multiple devices under test, achieving effective reuse of hardware resources. Compared to the traditional "one-to-one" testing mode, it eliminates the need for a separate test control terminal and test device for each device under test, significantly reducing hardware costs and improving testing efficiency.

[0041] In some embodiments of this invention, the plurality of CAN repeaters are deployed as a distributed CAN repeater group.

[0042] In this embodiment, multiple CAN repeaters are deployed in a distributed structure to form CAN repeater groups. In practical applications, the distributed deployment of multiple CAN repeaters can be planned based on factors such as the layout of the test site, the distribution location of the devices under test, and test requirements. For example, in a large automotive electronics production workshop, if the cockpit domain controllers under test are distributed in different work areas, CAN repeater groups can be deployed according to area division. A group of devices under test that are close to each other, functionally related, or easily connected by wiring are grouped into one area, and each area is equipped with a distributed CAN repeater group.

[0043] Distributed CAN repeater arrays are better suited to complex testing environments. Because they can be flexibly deployed according to actual needs, without being limited by a single centralized structure, the system can easily handle testing scenarios of different sizes and layouts. For example, when the testing site needs to be expanded or adjusted, only the corresponding CAN repeater arrays need to be redeployed or added / removed, without requiring large-scale modifications to the entire testing system, greatly improving the system's flexibility and scalability.

[0044] In some embodiments of this utility model, the testing device is provided with at least one CAN bus channel, and the testing device is connected to at least one CAN repeater group of the distributed structure through at least one CAN bus channel.

[0045] The test setup has at least one CAN bus channel; the specific number of CAN bus channels depends primarily on the model of the test setup. In actual connections, the CAN bus channels are selected appropriately based on the number of devices under test and the number and distribution of the distributed CAN repeater groups. For example, if the number of devices under test and CAN repeaters is small, only one CAN bus channel on the test setup can be used for connection; if the number is large, multiple CAN bus channels can be used to connect different CAN repeater groups. In this way, the test setup can effectively communicate with each CAN repeater group.

[0046] The test equipment, equipped with at least one CAN bus channel, can flexibly connect to varying numbers of distributed CAN repeater groups. When testing demands increase and the number of devices under test needs to be expanded, simply add the corresponding CAN repeater groups and incorporate them into the test system by adding or adjusting the connections of the CAN bus channels. This expansion method eliminates the need for large-scale modifications to the test equipment, reducing the cost and complexity of system expansion. Furthermore, multiple CAN bus channels can transmit data in parallel, significantly improving testing efficiency.

[0047] In some embodiments of this utility model, the distributed CAN repeater group includes a master CAN repeater and a slave CAN repeater. The master CAN repeater is connected to the test device and the slave CAN repeater respectively, and the slave CAN repeater is also used to connect to multiple devices under test.

[0048] A distributed CAN repeater group consists of a master CAN repeater and slave CAN repeaters. The master CAN repeater connects to both the test device and the slave CAN repeaters, and the slave CAN repeaters then connect to multiple devices under test. For example, in a CAN repeater group, the master CAN repeater is responsible for communicating with the test device, receiving test commands and data, and then forwarding this information to the slave CAN repeaters. The slave CAN repeaters further distribute the commands and data to the connected devices under test.

[0049] A distributed CAN repeater array enables efficient signal distribution and centralized management. The master CAN repeater acts as an intermediate hub, coordinating and forwarding signals, allowing the test device to easily communicate with multiple devices under test. The slave CAN repeaters handle specific device connections and signal transmission, improving system scalability and allowing for easy addition or reduction of the number of devices under test.

[0050] In some embodiments of this utility model, each CAN repeater group of the distributed structure includes a master CAN repeater, and the master CAN repeater is connected to the test device and the slave CAN repeater respectively.

[0051] In this embodiment, each distributed CAN repeater group can be equipped with a separate master CAN repeater. This master CAN repeater connects to the test device to receive control signals and data from it, and also connects to the slave CAN repeaters to forward information received from the test device. Each CAN repeater group operates independently without interference.

[0052] Each CAN repeater group has an independent master CAN repeater, improving system stability and reliability. When one CAN repeater group fails, it does not affect the normal operation of other CAN repeater groups, facilitating troubleshooting and maintenance. At the same time, this independent structure also makes system management clearer, allowing for individual configuration and monitoring of each CAN repeater group.

[0053] In some embodiments of this utility model, each CAN repeater group of the distributed structure includes a slave CAN repeater, and the slave CAN repeater is connected to a master CAN repeater and multiple devices under test.

[0054] Based on the number of devices to be tested in the actual test scenario, only one slave CAN repeater can be deployed in each distributed CAN repeater group. Since each CAN repeater provides multiple interfaces, a slave CAN repeater can also connect to multiple devices under test at the same time, thereby realizing parallel testing of multiple devices under test.

[0055] This architecture simplifies the complexity of CAN repeater groups and reduces hardware costs. For smaller-scale tests, a single CAN repeater can suffice, avoiding wasted hardware resources. It also simplifies system installation and debugging, improving testing efficiency.

[0056] In some embodiments of this utility model, each of the distributed CAN repeater groups includes multiple slave CAN repeaters, and the multiple slave CAN repeaters are respectively connected to a master CAN repeater and multiple devices under test.

[0057] When there are a large number of devices under test, each distributed CAN repeater group can contain multiple slave CAN repeaters. Each slave CAN repeater is connected to a master CAN repeater and multiple devices under test; each slave CAN repeater can connect to multiple devices under test. The master CAN repeater distributes test commands and data to each slave CAN repeater, and each slave CAN repeater then sends the commands and data to its respective connected device under test, thus meeting the connection and testing needs of a large number of devices under test.

[0058] This embodiment increases the system's connectivity and scalability, allowing for the simultaneous connection of more devices under test, thus meeting the needs of large-scale testing. By rationally allocating the number of connections from the CAN repeater, the efficiency and stability of data transmission can be improved, ensuring the smooth progress of the testing process.

[0059] Based on the aforementioned embodiments, once the appropriate CAN repeater model is selected, the number of interfaces that the CAN repeater can provide is determined, and consequently, the maximum number of devices under test that can be connected is also determined. Therefore, in practical applications, the number of slave CAN repeaters connected to the master CAN repeater can be flexibly selected according to the scale of the test.

[0060] In some embodiments of this utility model, the testing device includes CANOE testing software and CANOE testing hardware. The CANOE testing software is deployed on the test control terminal, and the CANOE testing hardware is connected to the test control terminal via USB.

[0061] The testing setup consists of CANOE testing software and CANOE testing hardware. The CANOE testing software, deployed on the test control terminal, provides functions such as test configuration, command transmission, data reception, and analysis. The CANOE testing hardware is connected to the test control terminal via a USB wired connection, handling the actual signal transmission and reception and hardware interaction. For example, testers can set test parameters in the CANOE testing software on the test control terminal, and then send commands to the CANOE testing hardware via the USB connection. The hardware then converts the commands into CAN bus signals and sends them to the CAN repeater group.

[0062] In practical applications, select CANOE test hardware that meets the testing requirements. This hardware must have stable CAN bus signal transmission and reception capabilities and support multiple CAN bus standards (such as CAN2.0A, CAN2.0B, etc.) to adapt to the communication protocols of different devices under test. Simultaneously, the hardware should have a sufficient number of channels to meet the requirement of simultaneously connecting multiple CAN repeaters and devices under test for testing. For example, during large-scale cockpit domain controller aging tests, multiple CAN channels may be needed to transmit test signals in parallel.

[0063] Select a CANOE test software version that matches the test hardware. This software should have comprehensive testing functions, such as test script writing, signal monitoring, and data analysis. Install a suitable operating system (such as Windows) on the test control terminal (usually a computer), ensuring that the operating system version is compatible with the CANOE test software.

[0064] Use reliable, USB-compliant cables. The length of the cables should be selected based on the actual layout of the test site to ensure the stability of the connection and the quality of signal transmission between the CANOE test hardware and the test control terminal.

[0065] This embodiment uses the CANOE testing tool, which provides a user-friendly interface and rich testing functions, facilitating operation and management for testers. The CANOE testing hardware ensures accurate signal transmission and reception and hardware compatibility, improving the reliability and stability of the test. Meanwhile, the USB connection method is simple and convenient, facilitating system installation and debugging.

[0066] In some embodiments of this utility model, the device under test includes a cockpit domain controller.

[0067] In the equipment aging test system of this invention, the device under test is mainly a cockpit domain controller. The cockpit domain controller is connected to the entire test system via a CAN repeater. The test device sends various test commands to the cockpit domain controller to simulate different working scenarios and conditions, and tests the performance and stability of the cockpit domain controller. For example, it tests the cockpit domain controller's operation under extreme conditions such as long-term operation, high temperature, and low temperature.

[0068] Aging tests on the cockpit domain controller using the test apparatus and CAN repeater described in the foregoing embodiments can accurately evaluate the controller's durability and reliability. By simulating various real-world usage scenarios, potential problems with the cockpit domain controller under different conditions can be identified, providing a basis for product optimization and improvement, thereby enhancing product quality and market competitiveness.

[0069] In some embodiments of this utility model, the equipment aging test system further includes an external display device, and multiple cockpit domain controllers are connected to the external display device.

[0070] The equipment aging test system has been enhanced with an external display device, connecting multiple cockpit domain controllers. This external display device can show the real-time test status and parameter information of the cockpit domain controllers. For example, it can display parameters such as temperature, voltage, and current, as well as fault information that occurs during the test. Test personnel can intuitively understand the test situation through the external display device and promptly identify and address problems.

[0071] External display devices enhance the intuitiveness and operability of testing. Test personnel no longer need to constantly monitor the test control terminal screen; they can track test progress and equipment status in real time via an external display. Furthermore, it allows multiple people to observe the test simultaneously, improving testing efficiency and management convenience.

[0072] For ease of understanding of the above embodiments, as follows Figure 3The diagram shows another structural schematic of the device aging test system of this utility model. Taking the testing of 50 domain controllers per batch as an example, the traditional solution uses a "one-to-one" approach, requiring the deployment of 50 computers + 50 CANOEs. Using the device aging test system of this utility model, only 1 computer + 1 CANOE + 6 CAN repeaters (each CAN repeater can connect to 10 domain controllers) are needed to achieve the preset functions, greatly saving hardware costs and improving testing efficiency.

[0073] The above description is merely a specific embodiment of this utility model. Under the teachings of this utility model, those skilled in the art can make other improvements or modifications based on the above embodiments. Those skilled in the art should understand that the above specific description is only to better explain the purpose of this utility model, and the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. An equipment aging test system, wherein, The equipment aging test system includes: a test control terminal, a test device, multiple CAN repeaters, and multiple devices to be tested. The test device is connected to the test control terminal and the multiple CAN repeaters, and the multiple CAN repeaters are connected to the multiple devices to be tested.

2. The equipment aging test system as described in claim 1, wherein, The multiple CAN repeaters are deployed as a distributed CAN repeater group.

3. The equipment aging test system as described in claim 2, wherein, The test device is provided with at least one CAN bus channel, and the test device is connected to at least one CAN repeater group of the distributed structure through at least one CAN bus channel.

4. The equipment aging test system as described in claim 3, wherein, The distributed CAN repeater group includes a master CAN repeater and a slave CAN repeater. The master CAN repeater is connected to both the test device and the slave CAN repeater. The slave CAN repeater is also used to connect to multiple devices under test.

5. The equipment aging test system as described in claim 4, wherein, Each of the distributed CAN repeater groups includes a master CAN repeater, which is connected to both the test device and the slave CAN repeater.

6. The equipment aging test system as described in claim 4, wherein, Each of the distributed CAN repeater groups includes a slave CAN repeater, which is connected to a master CAN repeater and multiple devices under test.

7. The equipment aging test system as described in claim 4, wherein, Each of the distributed CAN repeater groups includes multiple slave CAN repeaters, each of which is connected to a master CAN repeater and multiple devices under test.

8. The equipment aging test system according to any one of claims 1 to 7, wherein, The testing device includes CANOE testing software and CANOE testing hardware. The CANOE testing software is deployed on the test control terminal, and the CANOE testing hardware is connected to the test control terminal via USB.

9. The equipment aging test system according to any one of claims 1 to 7, wherein, The device under test includes a cockpit domain controller.

10. The equipment aging test system as described in claim 9, wherein, The equipment aging test system also includes an external display device, and multiple cockpit domain controllers are connected to the external display device.

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