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Autonomous Real Time Requirements TracingOne of the more challenging aspects of software development is the ability to verify and validate the functional software requirements dictated by the Software Requirements Specification (SRS) and the Software Detail Design (SDD). Insuring the software has achieved the intended requirements is the responsibility of the Software Quality team and the Software Test team. The utilization of Timeliner-TLX(sup TM) Auto- Procedures for relocating ground operations positions to ISS automated on-board operations has begun the transition that would be required for manned deep space missions with minimal crew requirements. This transition also moves the auto-procedures from the procedure realm into the flight software arena and as such the operational requirements and testing will be more structured and rigorous. The autoprocedures would be required to meet NASA software standards as specified in the Software Safety Standard (NASASTD- 8719), the Software Engineering Requirements (NPR 7150), the Software Assurance Standard (NASA-STD-8739) and also the Human Rating Requirements (NPR-8705). The Autonomous Fluid Transfer System (AFTS) test-bed utilizes the Timeliner-TLX(sup TM) Language for development of autonomous command and control software. The Timeliner-TLX(sup TM) system has the unique feature of providing the current line of the statement in execution during real-time execution of the software. The feature of execution line number internal reporting unlocks the capability of monitoring the execution autonomously by use of a companion Timeliner-TLX(sup TM) sequence as the line number reporting is embedded inside the Timeliner-TLX(sup TM) execution engine. This negates I/O processing of this type data as the line number status of executing sequences is built-in as a function reference. This paper will outline the design and capabilities of the AFTS Autonomous Requirements Tracker, which traces and logs SRS requirements as they are being met during real-time execution of the targeted system. It is envisioned that real time requirements tracing will greatly assist the movement of autoprocedures to flight software enhancing the software assurance of auto-procedures and also their acceptance as reliable commanders.
Document ID
20140008562
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Authors
Plattsmier, George (NASA Marshall Space Flight Center Huntsville, AL, United States)
Stetson, Howard (Teledyne Brown Engineering Huntsville, AL, United States)
Date Acquired
June 30, 2014
Publication Date
March 1, 2014
Subject Category
Computer Programming And Software
Report/Patent Number
M13-3017
Meeting Information
Meeting: 2014 IEEE Aerospace Conference
Location: Big Sky, Montana
Country: United States
Start Date: March 1, 2014
End Date: March 8, 2014
Sponsors: Institute of Electrical and Electronics Engineers, American Inst. of Aeronautics and Astronautics, PHM Society
Distribution Limits
Public
Copyright
Public Use Permitted.

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