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This paper reviews the use of the Electronic Procedure System (EPS) in the 2010 NASA Habitat Demonstration Unit (HDU) as part of the 2010 NASA Desert Research and Technology Studies (Desert RATS). The NASA Desert RATS study is an analog test of operations in a lunar environment performed in desert locales. The Electronic Procedure System represents an improvement on the concept of operations for remote space missions, intended to increase the autonomy of the remote crew and reduce their dependency on Earth. I. Introduction Traditional human spaceflight operations products, such as activity plans, flight software loads and automated procedures, are highly tested and have a very slow change cycle, compared to manual procedures, which can be changed on short notice but cannot be executed autonomously. Furthermore, flight controllers and crew today use many different, poorly integrated software tools when developing and executing procedures. The new Electronic Procedure System (EPS) for developing and executing procedures has been developed for NASA operations. The EPS method allows manual procedures to be developed and used as they have in past programs, but also allows the procedures to be transitioned into autonomous modes of execution as the operators become comfortable with them. The EPS method was used to control the HDU, including lights, power, and controllable cameras. A number of different kinds of procedures were selected to illustrate the different aspect of operations. One type of procedure was a diagnostic procedure, which would trace a fault tree and diagnose and, if possible, repair an error. The EPS method allowed this procedure to be executed in a mixed-autonomous fashion, where some diagnostic steps have no telemetry feedback and electronic commands would involve manual actions to verify the completion of the step, while other electronic telemetry and commands steps could perform autonomously without user interaction. Other type of procedures demonstrated using EPS, included Just-In-Time (JIT) electronic procedures. In this case the procedures are made and modified based on short notice. Using EPS automation technology, the JIT procedures are verified and translated for mixed-autonomous execution. The JIT procedures can be easily created or modified using a dedicated editor designed for procedures. This editor, called the Procedure Integrated Development Environment, or PRIDE, has an automatic connection to a database describing the hardware being operated, as well as a list of sub-procedures that can easily be composed into a daily plan. By using PRIDE, the operators can quickly and easily create and modify procedures, and then automatically load them into the procedure execution environment. |
