Automobile ECU measurement system based on hardware-in-loop simulation

An electronic control unit and control unit technology, applied in electrical testing/monitoring, etc., can solve problems such as high testing costs and unclear sources of errors, and achieve the effects of convenient testing, good repeatability, and reduced development cycle

Inactive Publication Date: 2014-10-01
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of high test cost and unclear source of errors caused by the test mode of the ex

Method used

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  • Automobile ECU measurement system based on hardware-in-loop simulation
  • Automobile ECU measurement system based on hardware-in-loop simulation

Examples

Experimental program
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Example Embodiment

[0019] Specific implementation mode 1: the following combination figure 1 with figure 2 To explain this embodiment, the hardware-in-the-loop simulation-based automotive electronic control unit measurement system in this embodiment includes an upper computer 1, a lower computer 2 and an electronic control unit 3 under test.

[0020] The upper computer 1 sends the test case 1-2 to the lower computer 2 through the USB bus by running the control program 1-1;

[0021] The lower computer 2 includes USB to SPI module 2-1, micro-control module 2-2, bus transceiver module 2-3, fault simulation module 2-4 and load simulation module 2-5,

[0022] The lower computer 2 realizes the mutual conversion between USB data and SPI data through the USB-to-SPI module 2-1. The USB-to-SPI module 2-1 and the micro-control module 2-2 are connected through the SPI bus,

[0023] According to the received test case 1-2, the micro control module 2-2 sends a request message to the electronic control unit 3 under t...

Example Embodiment

[0033] Specific embodiment 2: This embodiment further explains the first embodiment. The load simulation module 2-5 includes a DSP module, a power management module, a MOSFET power drive module, a current and voltage sampling module, and a CAN communication module.

[0034] In this embodiment, the drain current Id is controlled by adjusting the gate-source voltage Ugs of the MOSFET, so that the drain current follows a predetermined curve. Assuming that the drain-source voltage is Uds, if you keep Uds / Id at a constant value, it is a constant resistance load; if you keep Id at a constant value, it is a constant current load; if you keep Uds unchanged, it is a constant voltage load; if you keep Uds* If Id is a constant value, it is a constant power load.

Example Embodiment

[0035] Specific embodiment three: This embodiment will further explain the first or second embodiment, the bus transceiver module 2-3 includes CAN bus, K bus and LIN bus.

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Abstract

The invention discloses an automobile ECU measurement system based on hardware-in-loop simulation, and belongs to the technical field of automobile ECU tests. The automobile ECU measurement system based on hardware-in-loop simulation aims to solve the problems that in an existing test mode of automobile ECUs, the test cost is high and error sources are unclear. According to the automobile ECU measurement system based on hardware-in-loop simulation, tests of a real automobile are converted into the ECU tests in a virtual automobile through the hardware-in-loop simulation technology, the characteristics of the real automobile are simulated through an upper computer and a lower computer, the tests are conveniently and efficiently carried out, the repeatability is good, and many dangerous conditions of the real automobile can be simulated; in the early stage of automobile research and development, the characteristics of the complete automobile are simulated to test the functions and performance of the ECUs, and then ECUs passing the tests are combined to form a complete automobile system. The automobile ECU measurement system based on hardware-in-loop simulation is used for testing of the automobile ECUs.

Description

technical field [0001] The invention relates to an automotive electronic control unit measurement system based on hardware-in-the-loop simulation, and belongs to the technical field of automotive electronic control unit testing. Background technique [0002] With the wide application of high-tech in automobiles, more and more electronic control units (ECUs) are embedded in automobiles. The functions of different types of ECUs vary greatly. The functions are different, which makes the diagnostic testing of ECU more and more complicated. [0003] In traditional automotive ECU testing, it is necessary to install the ECU on a real vehicle or on a bench for testing. In such a test mode, to complete the test of an ECU, all the hardware circuits and related software of other ECUs connected to it must be realized. That is to say, all ECU tests are carried out sequentially. Only when the previous ECU is completed and tested, can the next ECU be tested. This leads to a relatively lon...

Claims

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Application Information

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IPC IPC(8): G05B23/02
Inventor 王献林庞博升刘志远
Owner HARBIN INST OF TECH
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