CN201812198U - Device for testing automobile electronic control system - Google Patents
Device for testing automobile electronic control system Download PDFInfo
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- CN201812198U CN201812198U CN 201020225622 CN201020225622U CN201812198U CN 201812198 U CN201812198 U CN 201812198U CN 201020225622 CN201020225622 CN 201020225622 CN 201020225622 U CN201020225622 U CN 201020225622U CN 201812198 U CN201812198 U CN 201812198U
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Abstract
The utility model provides a device for testing an automobile electronic control system, which tests the automobile electronic control system to be tested by a man-machine interface which performs a test process. The device is internally provided with an environment model, a test model and a dynamic physical memory, wherein the environment model comprises an input module, an operation module for computing the input module, a virtual module and an output module; a computing result of the operation module is computed by the virtual module and is transmitted to the output module; and each variable quantity in the environment model has a corresponding physical memory address in the dynamic physical memory. The device for testing the automobile electronic control system can be specifically applied to the loop test of hardware of the automobile electronic control system, is simple and easy in structure, and is convenient to implement.
Description
Technical Field
The utility model relates to a device for testing automotive electronics control system, wherein, the automotive electronics control system that awaits measuring can be one (like engine control system), several (like engine control system + gearbox control system + braking anti-lock control system), also can be the control network that all electronic control system constitute on the car.
Background
A typical electronic control system for a vehicle, such as an Electronic Control Unit (ECU) for the vehicle, is an electronic control device widely used in the field of vehicles, which adjusts and calibrates the vehicle by measuring the operating state of each component of the vehicle.
When an Electronic Control Unit (ECU) of an automobile is developed and developed, the following development procedures and/or development methods are widely adopted: in the functional design and development stage, a mathematical model of an automobile electronic controller and a control object thereof is abstracted by means of a mathematical modeling tool (Matlab/Simulink), and the design is verified in a simulation mode.
In the Rapid Control Prototyping (RCP) phase, the model of the electronic control unit of the motor vehicle, which was abstracted out in the preceding phase, is then converted by means of a code generator into an executable program which runs on a hardware platform which can interact with the actual control object via a corresponding I/O interface.
And if the control effect is satisfactory, generating the executable code of the batch electronic controller hardware by the automobile electronic controller model abstracted by the code generator. Detailed testing, typically Hardware-In-The-Loop (HIL testing), is required before a batch of automotive electronic controllers can be used with The actual control objects.
In the HIL test, batch automobile electronic controller is connected with testing arrangement, simulates the function of the electronic controller to be tested on the testing arrangement with the help of the automobile model, and the state of the automobile model is transmitted to the electronic controller through the sensor simulation, and simultaneously, the output of the electronic controller is acquired, thereby realizing the interactive relation between the electronic controller and the testing arrangement.
EP1898282A discloses a method and a device for testing an electronic control system, wherein it is mentioned that the control system can be a motor control device or a driving and engine dynamic model of a whole vehicle. The disclosure of the prior art is so broad and general that it would be difficult for a person skilled in the art to apply the disclosure to any specific field and/or control system when trying to put it into practice, for example, although the prior art refers to a car, how to apply it specifically to the car field lacks corresponding technical solutions, and the person skilled in the art would be difficult to put it into a specific direction in the car field, for example, the testing of an ECU, without any inventive effort.
Disclosure of Invention
The to-be-solved technical problem of the present invention is to provide a device for testing an automotive electronic control system to reduce or avoid the aforementioned problems.
In order to solve the technical problem, the utility model provides a device for testing an automobile electronic control system, which tests the automobile electronic control system to be tested through a man-machine interface device for implementing the testing process, wherein an environment model and a testing model are operated in the testing device; the environment model comprises an input module, an operation module for operating the input module, a virtual module and an output module; the operation result of the operation module is transmitted to the output module after being operated by the virtual module; the test device also has a dynamic physical memory, and each variable in the environment model has a corresponding physical memory address in the dynamic physical memory.
The utility model provides an above-mentioned device for testing car electronic control system can be specifically applied to and carry out hardware at the return circuit test to car electronic control system, and its simple structure is simple and easy, is convenient for implement.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein,
fig. 1 is a schematic structural view showing an apparatus for testing an electronic control system of an automobile according to a preferred embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating the structure of one embodiment of the environmental model shown in FIG. 1;
FIG. 3 is a schematic diagram of an environment model according to another embodiment of the present invention;
fig. 4 is a schematic structural view showing an apparatus for testing an electronic control system of an automobile according to still another preferred embodiment of the present invention.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings. Wherein like parts are given like reference numerals.
An ECU is an electronic control system widely used in the automotive field, which adjusts and calibrates an automobile by measuring the operating state of each component of the automobile. The ECU is generally composed of a microprocessor (CPU), a memory (ROM, RAM), an input/output interface (I/O), an analog-to-digital converter (a/D), and a large-scale integrated circuit such as a shaper and a driver. In the ECU, the CPU is a core part, which has functions of operation and control, and also controls memories (ROM, RAM), input/output interfaces (I/O), and other external circuits in real time, and has a fault self-diagnosis and protection function. The utility model discloses in, ECU is only the product that is used for the test, promptly, after ECU produces into the sample through the design, need test it to judge whether it satisfies the designing requirement, perhaps whether be a qualified product.
The utility model discloses in so-called automobile electronic control system, not only confine to this specific model form of ECU, but the automobile electronic control system that any prior art can obtain, the utility model provides a testing arrangement is used for testing these automobile electronic control system to judge whether it is qualified. The electronic control system of the automobile to be tested can be one (such as an engine control system), a plurality of (such as the engine control system and a gearbox control system and a brake anti-lock control system) or a control network formed by all the electronic control systems on the automobile.
Fig. 1 is a schematic structural diagram of an apparatus for testing an electronic control system of an automobile according to a preferred embodiment of the present invention, wherein 1 represents an electronic control system of an automobile to be tested; 2 represents the testing device of the utility model; and 3 represents a user interface device such as a PC or the like.
The electronic control system 1 of the vehicle is a control unit of an electronic control system of the vehicle, such as a control unit of an engine of the vehicle or a control unit of an automatic transmission. The test apparatus is configured to test the functions of the automotive electronic control system 1, for example, to perform the HIL test of the automotive electronic control system. The test process of the vehicle electronic control system 1 is performed by a test device 2. In order to implement the test process, the automotive electronic control system 1 and the test device 2 are connected through a bidirectional interface, control system data of the automotive electronic control system 1 is transmitted to the test device 2 through an input interface of the test device 2, and the control system data can also be modified in the test device 2 and reversely transmitted to the automotive electronic control system 1 through an output interface of the test device 2. The human interface device 3 provides an interactive interface between the testing apparatus 2 and a user.
The main body of the test apparatus 2 is two models, namely an environmental model 4 and a test model 5, and a carrier on which the two models operate. The test of the electronic control system 1 of the vehicle must be established as a closed loop system with the object controlled by the electronic control system to be effective, for example, to test the function of an engine control system, the engine control system needs to be installed on the engine adapted to the engine control system. Different from the traditional test method, in the test device, the environment model 4 is operated inside the test device 2, and the environment model 4 simulates the real use environment of the electronic control system 1 of the automobile, for example, if the electronic control system of the automobile to be tested is an engine control system, the corresponding environment model is the body model of the engine to which the engine control system is adapted. To ensure real-time performance of the environmental model, the carrier on which the environmental model operates is usually a real-time simulator. The actual use condition of the automotive electronic control system 1 is reflected to the automotive electronic control system 1 by the parameters of the environment model 4. The actual test procedure for the control system is not performed by the environment model 4, but by the test model 5. To ensure real-time performance, the environment model 4 is typically run on a real-time simulator, and the test model 5 is typically run on a laboratory PC.
The interaction relationship between the automotive electronic control system 1 and the environmental model 4 and the test model 5 is as follows: the automobile electronic control system 1 realizes bidirectional data interaction between the automobile electronic control system 1 and the environment model 4 through an input/output interface on a carrier, namely a real-time simulator and related devices, which runs by the environment model 4; the data interaction between the test model 5 and the environment model 4 is realized by a communication protocol, and the communication protocol is realized by the connection of a real-time simulator and a test PC, which are carriers operated by the two models.
The human interface device 3 provides an interactive interface between the testing apparatus 2 and a user. The user can modify the parameters and the test process of the test model 5 and the environment model 4 through the human-computer interface device 3, change the operating conditions of the automotive electronic control system 1, and also can check the test results of the automotive electronic control system 1. The human interface device 3 is typically a PC, said human interface device 3 providing an interactive interface between the testing apparatus 2 and a user, and the user can modify the parameters of the environment model 4 and the testing process of the test model 5 through said human interface device 3. The PC can also be used as a carrier for the operation of the test model 5.
The human interface device 3 provides the user with an operator interface in which a new or existing environment model 4 can be created to adapt to the vehicle electronic control system 1 to be tested. In the testing device of the present invention, as long as the environment model is created by using a suitable software, such as MatLab/Simulink, the environment model 4 can be conveniently converted into a code that can be recognized by a machine by using a certain operation, and the code is run on the real-time simulation machine, which is a running carrier of the environment model 4.
The configuration of the test model 5 can likewise take place via the human interface device 3. The test pattern 5 is also created or modified on the human interface device 3 by means of suitable software and converted into machine-readable code to be run on a test PC, which is the carrier on which the test pattern runs. The test model 5 can be built by using software, such as NI/LabVIEW, and can be an automatic test process, and parameters of the environment model 4 can be manually modified to achieve the test purpose. In general, such targeted modification of the environmental model 4 requires knowledge of the structure of the environmental model 4, and modification of variables of the environmental model 4 requires knowledge of the memory address of each variable in the environmental model 4.
Access to the variables of the environment model 4 is conventionally achieved by manually entering the physical memory addresses of the environment model variables. Unlike conventional access methods, in one example of the present invention, for example, in building the environment model 4 using Matlab/SimuLink/Stateflow, all variables of the environment model 4 are represented by unique identifiers. Each identifier is automatically assigned its corresponding one of the physical memory addresses during the compilation of the environment model 4 into machine-recognizable code. When the test model 5 executes the test process, the used identifiers can be converted into corresponding physical memory addresses, and the values of the identifiers are read, written or modified in a targeted manner, which is equivalent to changing the values at the corresponding physical memory addresses, thereby greatly simplifying the test process.
By adopting the uniform identifier mode, data in the model can be well transferred, the model readability is enhanced, and the problem is caused that the variables of the environment model 4 are compiled into a large number of static variables. Static variables are initialized at compile time, and are not initialized again at each later call but only the value at the end of the last call is retained. In order to facilitate the modification of the values of the variables in the environmental model 4 during the test, a method for dynamically processing objects is introduced in the test device 5 of the automotive electronic control system 1.
The method of dynamically processing objects divides the variables in the test device 2 into two categories: the variables in the environment model 4 are called first type variables (as shown in fig. 2 and 3), the first type variables are accessed by the identifier method as described above, each identifier is assigned with a physical address in the compiling process and belongs to static variables, and the first type variables can be modified by the test model 5; variables in the virtual module 81 (shown in fig. 3) that do not actually exist in the environment model 4 but are added for control convenience are referred to as second-type variables, which have the same or similar data types as the corresponding first-type variables and belong to dynamic variables, and the second-type variables can also be modified through the test model 5. The management means 9 located on the testing means 2 are responsible for managing these variables of the first and second type for further applications. The management device 9 can be controlled directly or indirectly via the test model 5.
The presence of the second type of variable is associated with the execution of the test model. Variables of the second type are generated with the beginning of the test model, modified and assigned during the test, and likewise are cleared with the end of the test model.
Fig. 2 shows a schematic structural diagram of a specific embodiment of the environment model 4 shown in fig. 1, where the environment model 4 may be built by using a MatLab/Simulink modeling tool, an input module 40 of the environment model 4 includes 41 and 51 as shown in the figure, a certain arithmetic and/or logical operation is performed on the input module 40 in an operation module 61, and then a result of the operation is transmitted to an output module 71. To facilitate reading and modifying parameters in the environment model 4, there is an identifier uniquely determined for any module object in the environment model 4 (such as the modules 41 and 51 of the input module 40, the operation module 61 and the output module 71 shown in fig. 2). Correspondingly, the variables (parameters) included in the module object are the aforementioned variables of the first type.
Fig. 3 is a schematic structural diagram of an environment model according to another embodiment of the present invention, which is similar to fig. 2, except that after the input module 40 shown in fig. 2 is subjected to the arithmetic and logic operation of the operation module 61, the operation result of the operation module 61 is not directly transmitted to the output module 71, but transmitted to a module 81 where the actual environment model does not exist, the operation result of the operation module 61 can be further subjected to arithmetic and/or logic operation in the module 81, and then the final operation result is transmitted to the output module 71. The variables contained in the module 81 are variables of the second type, the module 81 and the actually existing modules 41, 51 and 61 together form the environment model 4 with respect to the user, and the variables contained in the module 81 (the variables of the second type) can also be called or modified by the test model 5 (as shown in fig. 1).
Fig. 4 is a schematic structural diagram of an apparatus for testing an electronic control system of an automobile according to still another preferred embodiment of the present invention, which is more detailed with respect to the embodiment shown in fig. 1, wherein the main body of the testing apparatus 2 is composed of an environment model 4 and a testing model 5, a dynamic physical memory 10 is provided in the hardware of the testing apparatus 2, each variable in the environment model 4 (such as the modules 41 and 51 of the input module 40, the operation module 61 and the output module 71 shown in fig. 2) has a corresponding physical memory address in the dynamic physical memory 10, and the environment model 4 and the testing model 5 realize data interaction through the physical memory 10. The management means 9 may enable the management of the objects of the first type and the objects of the second type for the test model 5 to invoke or modify. The first type object variables and the second type object variables are stored in the object storage file 11 in some way for use by the management means 9. The management device 9 is controlled directly or indirectly by the test model 5.
The utility model provides an above-mentioned a device for testing car electronic control system can specifically be applied to and carry out hardware at the return circuit test to car electronic control system, and its simple structure is easy, is convenient for implement.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes, modifications and combinations that may be made by those skilled in the art without departing from the spirit and principles of the invention should be considered within the scope of the invention.
Claims (1)
1. A device for testing an automotive electronic control system, the testing device (2) testing the automotive electronic control system (1) to be tested through a human interface device (3) implementing a testing process, characterized in that an environment model (4) and a test model (5) run inside the testing device (2); the environment model (4) comprises an input module (40), an operation module (61) for operating the input module (40), a virtual module (81) and an output module (71); the operation result of the operation module (61) is operated by the virtual module (81) and then is transmitted to the output module (71); the test device (2) also has a dynamic physical memory (10), and each variable in the environment model (4) has a corresponding physical memory address in the dynamic physical memory (10).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020225622 CN201812198U (en) | 2010-06-09 | 2010-06-09 | Device for testing automobile electronic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020225622 CN201812198U (en) | 2010-06-09 | 2010-06-09 | Device for testing automobile electronic control system |
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| CN201812198U true CN201812198U (en) | 2011-04-27 |
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| CN 201020225622 Expired - Lifetime CN201812198U (en) | 2010-06-09 | 2010-06-09 | Device for testing automobile electronic control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116991149A (en) * | 2023-09-28 | 2023-11-03 | 山西磊源电器有限责任公司 | Method and device for checking fee-controlled product, electronic equipment and storage medium |
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2010
- 2010-06-09 CN CN 201020225622 patent/CN201812198U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116991149A (en) * | 2023-09-28 | 2023-11-03 | 山西磊源电器有限责任公司 | Method and device for checking fee-controlled product, electronic equipment and storage medium |
| CN116991149B (en) * | 2023-09-28 | 2023-12-08 | 山西磊源电器有限责任公司 | Method and device for checking fee-controlled product, electronic equipment and storage medium |
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