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ecu test system and method

A test system and real technology, applied in the field of ECU test system, can solve the problems of inconvenient operation, affecting system debugging and parameter calibration, and inability to directly collect the voltage value of input signal, so as to achieve the effect of convenient control and avoid poor communication.

Active Publication Date: 2016-08-24
ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] figure 1 The ECU test system shown has the following disadvantages: when the real input signal of the real component 101 is selected as the input signal, the system cannot directly collect the voltage value of the input signal, which affects system debugging and parameter calibration
At the same time, the selection switch 105 is a hardware switch. Using the selection switch 105 to realize signal switching may cause poor communication due to poor hardware contact, and it is not easy to operate.

Method used

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  • ecu test system and method

Examples

Experimental program
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Effect test

Embodiment 1

[0025] The structure of the ECU test system provided by this embodiment is as follows: figure 2 As shown in , it includes a real-time machine 203, a real component 201 connected to the real-time machine 203, a host computer 204, and an ECU under test 202.

[0026] The host computer 204 is used to generate control signals and simulation codes. The real-time machine 203 receives and generates virtual input signals based on the simulation code. The real-time machine 203 receives the control signal, selects to transmit the virtual input signal or the real input signal to the ECU 202 under test based on the control signal, so that there is no need to switch between the real input signal and the virtual input signal through a switch in the form of hardware.

[0027] The output signal generated by the ECU 202 under test is transmitted to the real-time machine 203 , and then transmitted to the host computer 204 through the real-time machine 203 , so that the entire testing process c...

Embodiment 2

[0030] The ECU testing method that present embodiment provides is as image 3 shown in , including:

[0031] Step 301, the real component generates a real input signal and transmits it to the real-time machine;

[0032] Step 302, the upper computer generates control signals and model codes for testing, and transmits the control signals and the model codes to the real-time computer;

[0033] Step 303, the real-time machine receives and generates a virtual input signal based on the model code;

[0034] Step 304, the real-time machine receives and selects to transmit the real input signal or the virtual input signal to the ECU under test based on the control signal.

[0035] Those skilled in the art will easily know that the positions of step 301 and step 302 can be interchanged.

[0036] In another embodiment, the method further includes step 305, the real-time machine receives the output signal from the ECU under test, and transmits the output signal to the host computer. T...

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Abstract

The invention discloses an ECU testing system and method. The system includes: real components, used to generate real input signals; host computer, used to generate control signals and model codes for testing; real-time machine, connected with the real components, the host computer and the ECU under test, receiving the real input signal, receiving and generating a virtual input signal based on the model code, receiving and selecting to transmit the real input signal or the virtual input signal to the ECU under test based on the control signal. Therefore, the entire testing process can be controlled by the host computer, and the switch between the real input signal and the virtual input signal can be controlled by the host computer. The control process is simple and easy to operate without causing hardware errors.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an ECU testing system and method. Background technique [0002] The hardware-in-the-loop test system simulates the running state of the controlled object by running the simulation model on a real-time machine, and connects with the ECU (Electronic Control Unit, Electronic Control Unit) under test through the I / O interface, and conducts all aspects of the ECU under test. System testing. Almost all commercial vehicle manufacturers and suppliers currently use hardware-in-the-loop test systems for virtual testing of ECUs. By connecting the ECU to a real-time machine for testing, the virtual road test can be completed before the first car prototype is produced, thus saving a lot of time and testing costs. Not only that, the real-time machine can also complete the road test under extreme conditions that cannot be carried out in the actual vehicle test, and the test is reproducibl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B23/02
Inventor 何海波董婷婷金启前由毅冯擎峰
Owner ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD
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