Over-current test system
By designing an overcurrent testing system, using test controllers and programmable load instruments to realize automated current testing of domain controllers, the problem of low testing efficiency in the prior art is solved and the testing efficiency and accuracy are improved.
Patent Information
- Application Number
- CN202422243446.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-12
AI Technical Summary
In the prior art, the overcurrent testing of domain controllers is inefficient and cannot conduct efficient current testing, which affects the reliability and safety of automotive electronic systems.
Design an overcurrent testing system, including a domain controller and a test controller, control the current output through the test controller and record the current value of the overcurrent protector, and combine a programmable load meter and a computer/PC terminal to achieve automated testing.
It improves the efficiency of overcurrent testing, can output multiple current values at the same time, realizes automated testing, and improves the accuracy and efficiency of testing.
Smart Images
Figure CN223123109U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of electronic insurance overcurrent testing, and particularly relates to an overcurrent testing system. Background Art
[0002] As a core component in an automotive electronic system, a domain controller is responsible for managing and controlling different functional domains within a vehicle. By integrating multiple sensors, actuators, and control algorithms, it realizes centralized management and control of various vehicle functions. In a vehicle environment, problems such as voltage transients and electromagnetic interference may occur, which can potentially damage the domain controller. Therefore, it is very important to protect the domain controller from these sudden problems. As a circuit protection device, an electronic fuse can cut off the circuit when the current is too large, thereby protecting the domain controller and other electronic components from damage. Conducting overcurrent testing on the electronic fuse of the domain controller is an important measure to ensure the reliability and safety of the automotive electronic system. By simulating overcurrent situations, the performance of the electronic fuse is tested, thus ensuring the normal operation of the automotive electronic system and the safety of passengers.
[0003] However, the output of the vehicle domain controller is only valid when the function is turned on. Currently, the function is turned on manually for testing, resulting in low testing efficiency. Summary of the Utility Model
[0004] In view of the above-mentioned disadvantages of the prior art, this application provides an overcurrent testing system to solve at least one defect in the prior art.
[0005] To achieve the above and other objectives, this application provides an overcurrent testing system, which includes:
[0006] A domain controller, including a first control end and at least one current output circuit, and an overcurrent protector is connected in each current output circuit;
[0007] A test controller, including a first control signal output end, the first control signal output end is electrically connected to the first control end of the domain controller, and the test controller is used to control the test current flowing through the at least one current output circuit and to record the current value flowing through the overcurrent protector when triggering the overcurrent protection of the overcurrent protector.
[0008] In an embodiment of this application, the current output circuit includes a first current output end, the test controller further includes a second control signal output end, and the overcurrent testing system further includes: a load meter, including a second control end and at least one second current output end, the second control end is electrically connected to the second control signal output end, the second current output ends correspond to the first current output end one by one, and the second current output end is electrically connected to the first current output end.
[0009] In an embodiment of the present application, the load meter is a programmable load meter.
[0010] In an embodiment of the present application, the test controller includes: a host computer and a PC terminal. The host computer has a third control terminal and the first control signal output terminal. The PC terminal has the second control signal output terminal and the third control signal output terminal. The third control terminal is electrically connected to the third control signal output terminal.
[0011] In an embodiment of the present application, the overcurrent test system further includes a first communication line. The first control terminal is connected to the first control signal output terminal through the first communication line.
[0012] In an embodiment of the present application, the overcurrent test system further includes a second communication line. The third control terminal is connected to the third control signal output terminal through the second communication line.
[0013] In an embodiment of the present application, a current detection circuit is provided in the domain controller for detecting the current flowing through the overcurrent protector.
[0014] In an embodiment of the present application, the overcurrent test system further includes: a power supply module electrically connected to the domain controller.
[0015] In an embodiment of the present application, the overcurrent test system further includes: a display module electrically connected to the test controller for displaying the current flowing through the overcurrent protector.
[0016] In an embodiment of the present application, the overcurrent protector is an electronic fuse.
[0017] Advantages of the present application:
[0018] An overcurrent test system of the present application includes: a domain controller including a first control terminal and at least one current output circuit, and an overcurrent protector is connected in each current output circuit; a test controller including a first control signal output terminal, the first control signal output terminal is electrically connected to the first control terminal of the domain controller, and the test controller is used to control the test current flowing through the at least one current output circuit and to record the current value flowing through the overcurrent protector when triggering the overcurrent protection of the overcurrent protector. The present application controls the domain controller to output a test current through the test controller, and can also output multiple current values simultaneously. Compared with opening the domain controller in a traditional manual manner, its test efficiency is higher.
[0019] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The accompanying drawings herein are incorporated into and constitute a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. In the drawings:
[0021] Figure 1 It is a schematic diagram of an overcurrent test system according to an embodiment of the present application. Detailed implementation manners
[0022] The following uses specific specific examples to illustrate the implementation manners of the present application. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. The present application can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.
[0023] It should be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present application in a schematic manner. Therefore, only the components related to the present application are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be an arbitrary change, and the component layout type may also be more complex.
[0024] Although terms such as "first", "second", "A", and "B" can be used herein to describe various elements, these elements should not be limited by these terms and are only used to distinguish one element from another. For example, without departing from the scope of the following technology, the first element can be called the second element, and similarly, the second element can be called the first element. The term "and / or" includes combinations of multiple related items or any item in multiple related items.
[0025] As used herein, unless the context indicates otherwise, the singular form is also intended to include the plural form. It will be understood that the term "comprising" means the presence of the described features, quantities, steps, operations, elements, or combinations thereof, but does not exclude the presence or addition of one or more other features, quantities, steps, operations, elements, components, or combinations thereof.
[0026] Before the detailed description, it is intended to clarify that the division of components in this specification is only based on the main functions of each component. That is, two or more components described below can be combined into one component, or can be divided into two or more components according to more detailed functions. In addition to the main functions of the components, each component described below can also perform some or all of the functions of other components, and some of the main functions of each component can be specifically performed by other components.
[0027] Please refer to Figure 1 , Figure 1 which is a schematic diagram of an overcurrent test system according to an embodiment of the present application. In Figure 1 , the overcurrent test system includes:
[0028] A domain controller, including a first control end and at least one current output circuit, and an overcurrent protector is connected in each current output circuit;
[0029] A test controller, including a first control signal output end, the first control signal output end is electrically connected to the first control end of the domain controller, the test controller is used to control the test current flowing through the at least one current output circuit, and is used to record the current value flowing through the overcurrent protector when triggering the overcurrent protection of the overcurrent protector.
[0030] In the embodiment of the present application, the overcurrent protector is an electronic fuse. Hereinafter, the embodiment of the present application will be described in detail with the electronic fuse as the overcurrent protector.
[0031] When testing the overcurrent of the electronic fuse in the current output circuit of the domain controller, the test controller makes the multi-channel pins of the domain controller output a first test current, and the first test current flows through the electronic fuse. After triggering the overcurrent protection of the electronic fuse, the test controller records the current value and time value when the electronic fuse is in overcurrent protection, so as to realize the overcurrent test of the electronic fuse.
[0032] It should be noted that the test controller outputs a first control signal through the first control signal output end and sends the first control signal to the domain controller. The first control end of the domain controller receives the first control signal and sends it into the domain controller. The domain controller responds to the first control signal to make the first current output end of the current output circuit output a first test current, and the first test current flows through the electronic fuse. If the overcurrent protection of the electronic fuse is triggered, the domain controller sends the current when the electronic fuse generates overcurrent protection to the test controller, and at the same time the test controller records the time value when the electronic fuse generates overcurrent protection, so as to complete the overcurrent test of the electronic protection.
[0033] In an embodiment of the present application, the current output circuit includes a first current output terminal, the test controller further includes a second control signal output terminal, and the overcurrent test system further includes: a load meter, including a second control terminal and at least one second current output terminal, the second control terminal is electrically connected to the second control signal output terminal, the second current output terminals correspond to the first current output terminals one by one, and the second current output terminals are electrically connected to the first current output terminals.
[0034] As Figure 1 shown, the current output circuit includes a first current output terminal, and the first current output terminal is connected to a load. The load meter includes a plurality of second current output terminals, and the number of second current output terminals is the same as the number of first current output terminals. Each second current output terminal is connected to a first current output terminal. When testing the overcurrent of the multi-domain controller electronic fuse, the second control signal output terminal of the test controller outputs a second control signal and sends the second control signal to the load meter. The load meter is connected in parallel with the load, receives the second control signal through the second control terminal and sends it into the load meter. The load meter responds to the second control signal and outputs a second test current through the second current output terminal, so that the second test current flows through the electronic fuse. It should be noted that the way the load meter outputs the second test current is a step-by-step way, that is, a gradually increasing way. The load meter performs a step-by-step pull load current on the first current output terminal of the domain controller until the overcurrent protection of the electronic fuse is triggered. When the overcurrent protection of the electronic fuse is triggered, the domain controller sends the current when the electronic fuse generates overcurrent protection to the test controller, and at the same time the test controller records the time value when the electronic fuse generates overcurrent protection, so as to complete the overcurrent test of the electronic protection.
[0035] In this embodiment, the programmable load meter is connected to multiple first current output terminals of the domain controller to perform a pull load current on the first current output terminals, thereby improving the test efficiency.
[0036] In an embodiment of the present application, the load meter is a programmable load meter. The load range and accuracy of this programmable load meter can be set according to actual needs.
[0037] In an embodiment of the present application, the test controller includes: a host computer and a PC terminal. The host computer has a third control terminal and the first control signal output terminal, the PC terminal has the second control signal output terminal and the third control signal output terminal, and the third control terminal is electrically connected to the third control signal output terminal.
[0038] Among them, the host computer can achieve I / O control of the domain controller through the UDS protocol. For example, the host computer controls the first current output terminal of the domain controller (the first current output terminal of the current output circuit) to output a first test current. The host computer can also reset the domain controller through the UDS protocol. After resetting, automated testing of different electronic fuses can be carried out again. Specifically, during overcurrent testing, all electronic fuses can be classified according to the type of electronic fuse, and the electronic fuses of the same type are grouped into one category. Each time a test is performed, all electronic fuses can be tested simultaneously, or different types of electronic fuses can be tested separately one after another. For example, after the first type of electronic fuse triggers overcurrent protection, the test controller can input an instruction to reset the domain controller. After resetting, the second type of electronic fuse can be tested again to achieve automated testing.
[0039] When testing the overcurrent of the electronic fuses of the multi-channel domain controller, the PC sends the third control signal to the host computer through the third control signal output terminal. The third control terminal of the host computer receives the third control signal and sends the third control signal into the host computer. The host computer responds to the third control signal to generate the first control signal. The host computer sends the first control signal to the domain controller through the first control signal output terminal. The first control terminal of the domain controller receives the first control signal and inputs the first control signal into the domain controller. The domain controller responds to the first control signal and outputs the first test current through the first current output terminal. The first test current flows through the electronic fuse. At the same time, the PC sends the second control signal to the load meter through the second control signal output terminal. The second control terminal of the load meter receives the second control signal and sends the second control signal into the load meter. The load meter responds to the second control signal and outputs the second test current through the second current output terminal to achieve a step-by-step load current on the first current output terminal of the domain controller. The load meter continuously outputs the second test current until the electronic fuse triggers overcurrent protection. At this time, the PC uses an automated script to record the current value and time value of the overcurrent protection of the electronic fuse. After the electronic fuse of the domain controller triggers overcurrent protection, the host computer can input an instruction to reset the domain controller. After resetting, automated testing of different electronic fuses can be carried out again.
[0040] It should be noted that the load meter is connected to the PC through a data cable, that is, the second control terminal is connected to the second control signal output terminal through a data cable.
[0041] In addition to controlling the host computer and the load meter through control signals, the PC can also receive the data fed back by the host computer and the load meter. For example, it includes the current flowing through the electronic fuse, the current output by the domain controller, the current output by the load meter, the operating data of the host computer, the operating data of the load meter, etc.
[0042] In an embodiment of the present application, the overcurrent test system further includes a first communication line, and the first control end is connected to the first control signal output end through the first communication line.
[0043] In an embodiment of the present application, the overcurrent test system further includes a second communication line, and the third control end is connected to the third control signal output end through the second communication line.
[0044] In an embodiment of the present application, a current detection circuit is provided in the domain controller for detecting the current flowing through the overcurrent protector.
[0045] The current detection circuit detects the current flowing through the overcurrent protector. The domain controller samples the current value and then sends the sampled current value to the host computer, and then the host computer sends the current value to the PC side. The current value of the overcurrent protection of the electronic insurance is recorded through the automation script running on the PC side.
[0046] In an embodiment of the present application, the overcurrent test system further includes: a power supply module electrically connected to the domain controller.
[0047] In an embodiment of the present application, the overcurrent test system further includes: a display module electrically connected to the test controller for displaying the current flowing through the overcurrent protector. During the overcurrent test, the overcurrent detection circuit detects the current value flowing through the overcurrent protector, sends the current value to the test controller through the domain controller, and then displays it through the display module.
[0048] Those skilled in the art can understand that the related modules and their implemented functions involved in the present utility model can be realized by loading conventional computer software programs or relevant protocols in the prior art on the improved hardware and the devices, devices or systems composed thereof, rather than improving the computer software programs or relevant protocols in the prior art. For example, the improved computer hardware system can still realize the specific functions of the hardware system by loading the existing software operating system. Therefore, it can be understood that the innovation of the present utility model lies in the connection combination relationship of the hardware modules / units in the prior art, rather than merely the improvement of the specific structure of the hardware modules / units and the software or protocol carried in the hardware modules to realize the relevant functions.
[0049] The above embodiments only exemplarily illustrate the principles and effects of the present application, rather than limiting the present application. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present application should still be covered by the claims of the present application.
Claims
1. An overcurrent test system, characterized in that, The overcurrent test system includes: A domain controller, including a first control terminal and at least one current output circuit, with an overcurrent protector connected in each current output circuit; A test controller, including a first control signal output terminal, the first control signal output terminal being electrically connected to the first control terminal of the domain controller, the test controller being used to control the test current flowing through the at least one current output circuit and to record the current value flowing through the overcurrent protector when triggering the overcurrent protection of the overcurrent protector.
2. The overcurrent test system according to claim 1, wherein The current output circuit includes a first current output terminal, the test controller further includes a second control signal output terminal, and the overcurrent test system further includes: A load meter, including a second control terminal and at least one second current output terminal, the second control terminal being electrically connected to the second control signal output terminal, the second current output terminals corresponding one-to-one with the first current output terminal, and the second current output terminal being electrically connected to the first current output terminal.
3. The overcurrent test system according to claim 2, wherein The load meter is a programmable load meter.
4. The overcurrent test system according to claim 2, wherein The test controller includes: a host computer and a PC terminal, the host computer having a third control terminal and the first control signal output terminal, the PC terminal having the second control signal output terminal and a third control signal output terminal, the third control terminal being electrically connected to the third control signal output terminal.
5. The overcurrent test system according to claim 4, wherein The overcurrent test system further includes a first communication line, and the first control terminal is connected to the first control signal output terminal through the first communication line.
6. The overcurrent test system according to claim 4 or 5, characterized in that The overcurrent test system further includes a second communication line, and the third control terminal is connected to the third control signal output terminal through the second communication line.
7. The overcurrent test system according to claim 1, characterized in that, A current detection circuit is provided in the domain controller for detecting the current flowing through the overcurrent protector.
8. The overcurrent test system according to claim 1, characterized in that, The overcurrent test system further includes: a power supply module electrically connected to the domain controller.
9. The overcurrent test system according to claim 1, wherein, The overcurrent test system further includes: A display module, electrically connected to the test controller, for displaying the current flowing through the overcurrent protector.
10. The overcurrent test system according to claim 1, characterized in that, The overcurrent protector is an electronic fuse.