Watch how to perform more testing at the verification stage
Published on 17th April 2018
A considerable amount of electronic validation and verification testing has been carried out on vehicle test boards for many years. These traditional automotive test boards consist of production-intent control units laid out on a table and connected together. The problem being that this solution is physically unrepresentative of the vehicle, whilst the increasing complexity of control units results in the setup being technically insufficient to perform many common tests.
Whilst this setup has been acceptable for simple automotive electrical testing in the past, the scope of verification it can support is getting narrower due to the increased complexity of control modules. This is brought about by advancing technologies powering the drive towards full vehicular automation.
Therefore, vehicle control systems rely upon signalling they receive from moving parts and increased environmental information in order to function properly; signalling that has not existed in traditional automotive test boards.
What’s more, these test boards don’t allow tests to take place in a representative fashion, due to the fact the components aren’t in the correct physical locations, or functioning in the same way that they would be in a real vehicle.
add2’s DTB (Dynamic Test Board) can be introduced into a yellowboard setup to help to increase the physical representatives of the test board and provide many of the signals that a real vehicle would during motion, such as crankshaft, transmission, wheel speed sensors, fuel rail and injection system.
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The system enables more testing to take place at an earlier stage by simulating enough inputs to convince a system that a powertrain is present and operational.
This then allows testing of controllers that are dependent on dynamic signals to take place in a laboratory environment. In turn, a greater number of tests can be performed earlier, and in a fashion that is significantly more accurate, cost-effective and safe.
The DTB has been proven in the field to significantly reduce the costs associated with testing of embedded systems. It can perform a significant amount of testing needed for verification at a tenth of the price of a HIL system and a quarter of the price of a prototype vehicle, whilst being used across multiple vehicle programs.
For more information, watch the DTB introduction video below:
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More information on the DTB is available here.