SCR (Selective Catalyst Reduction) controller HIL test platform

Abstract

The invention discloses an SCR (Selective Catalyst Reduction) controller HIL test platform, which comprises a test host, a data connecting line, an HIL hardware line concentration control board, an SCR control communication wiring harness, and is characterized in that the test host is connected with the HIL hardware line concentration control board through the data connecting line; the HIL hardware line concentration control board is connected with an SCR controller through the SCR control communication wiring harness; the test host comprises a signal acquisition and simulation board card, the signal acquisition and simulation board card is in communication connection with the HIL hardware line concentration control board; the test host is equipped with NI TestStand process testing management software, and specific test steps and modes in the NI TestStand process testing management software are compiled according to corresponding test cases of program data in the SCR controller. The SCR controller HIL test platform calls a test environment simulation function according to a compiled test scheme, performs tests on each function automatically, generates a test report finally, and carries out consulting and back tracing.

Description

technical field [0001] The invention relates to the field of HIL testing, in particular to an SCR controller HIL testing platform. Background technique [0002] The SCR (Selective Catalyst Reduction) system controller is the core component of the diesel engine selective catalytic conversion system that controls the entire system to work. The function of the SCR controller directly affects the operation of the entire SCR system and affects the control of emission results. The functions of the SCR controller are all determined by the software in it. Due to changes in market demand, the SCR controller software also needs to be adjusted and updated accordingly. Whether it is newly developed or updated software, it needs to go through strict and systematic testing to ensure that the functions are correct and effective before they can be put on the market. [0003] At present, the test of SCR controller is mainly carried out by combining manual test and engine bench test, but t...

AI Technical Summary

Problems solved by technology

[0003] At present, the test of SCR controller is mainly carried out by combining manual test and engine bench test, but this method has the following disadvantages: 1) Manual test cannot effectively simulate the test environment, and the test results have certain risks; 2) The complexity of the test content makes it impossible to guarantee that there will be no missed or wrong tests during manual testing; 3) The test volume of the test content is relatively large, and manual testing takes a long time to test; 4) The engine bench test is time-consuming and expensive, and cannot Every program can be tested on the bench

[0004] The traditional SCR controller testing method will directly affect the timeliness and correctness of SCR controller software development due to the above shortcomings, hindering the development of products and companies

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