Remote-Fill-Control

Used for University of Washington's Society of Advanced Propulsion

Version 3

• Changed from command line input to also incorporate switch input, as shown here.
• Modified GUI and improved multithreading.
• Final and tested. V3 is safe for rocket launch.

Version 2

• Added GUI and partially functional data logging to csv. Uses potentially unsafe multithreading.

Version 1

remotefill.py will be used with a Raspberry PI 3 situated on ground control to control the fill procedure of the rocket.

Current menu commands:

• v : show valve names
• open 'valve name': opens valve
• close 'valve name': closes valve
• status: show valves status
• menu: show all commands
• quit: exit program

PROJECT CHARTER

AVIONICS – REMOTE FILL

PURPOSE

What does this part do? What are the roles of this part? High level detail of its components.

• Develop the control scheme for remote fill procedures
• Receive command from ground station to open nitrous oxide valves and vent valves
• Send sensor data prevalent to fill

SCOPE

How does this project interact with other team projects? What level of integration is required?

• Requires integration with ground station and other avionics teams with wireless communications to develop standard procedures
• Some hardware will be chosen by the propulsion team with consideration to their mass flow requirements and space requirements

PROJECT HISTORY

How has this part been designed in the past? Did that work well?

• Remote fill was introduced last year with a wire connection to send commands
• Project was entirely within propulsion subteam
• Had no graphic interface/used buttons
• Sensors were a separate project that used optical infrared
• The method was not as accurate as desired and had issues sending consistent signals

REQUIREMENTS / RESTRICTIONS / RISK

What happens if this part does not work? How will this affect the system it is a part of and the rocket? Are there any immediate restrictions or requirements? Is there anything that needs to be considered?

• Remote fill is mission critical

OBJECTVE

When is this project defined as done? What are the deliverables? What level of testing is required?

• Transmissions must broadcast over 5000 ft for the distance between ground control and launch rail
• System will be tested with the propulsion system at static fires

DESIGN STANDING

Rank 1-3. 1 is a totally new project, requires completely new design. 3 is something that needs minimal revisions.

• Ranks 2: Add wireless communications

RESOURCES

Is there any documentation or CAD models for the member to reference?

• Sabrina developed the electronics used for this system last year.
• Resources have been added to the drive