The Automation Tool Development for Aircraft Cockpit Display Systems Verification in Part of Text Data

Nowadays there are lots of means to automate the aircraft avionics software verification. The model-based software development made a formal verification approach popular (e.g. model checking). Such ways allow to verify the matching of the system model contained the end number of states and requirements expressed in the temporal logic language. However, the software operation in the target platform is out of scope here. Software verification within a hardware-in-the-loop simulation takes into account the target features. In this case, the verification automation tools are capable to simulate the input signals, to check the equipment’s feedback by monitoring output signals, to process the captured data, and to generate the verification protocols. At the same time, there are some onboard high-critical systems (e.g. cockpit displays, flight warning) are being required the human-operator during the testing. They generate visual and aural information which has to be perceived by for the crew members. Thus, their verification is complicated to be automated accounting the mentioned aspect that leads to increased time and cost expenses. The paper describes the software tool that has been developed to partially automate the verification of avionics equipment which required human visual checking. The tool performs recognizing of the textual data displayed on the cockpit screens. It allows reducing the time and cost expenses within aircraft testing and recertification.