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Carl F Otto -
Consulting: Creative Product Development and Inventor.
Certified to perform OSHA mock inspections, with innovative problem solutions.
Remote control Systems
the Evolution of Command, control, communications and COMPUTER
SYSTEMS (C4)
The
design of control systems, such as launch processing, has progressed over the
years. The design can be separated into different types of systems and this
paper shows the logical progression to a design that I suggested to NASA[i] in
2007. That design has now been developed and approved for NASA remote camera
control. This paper also outlines a progression to a new system of C2 [ii] that
diminishes some of the problems of serial control while diminishing cost.
History:
1. Direct Wire: C2.
Each
end device had a direct wire to the control system.
a. Advantages:
i. It was possible to have a continuous status for wire systems by maintaining a low level conduction to a status indicator.
ii. Easily designed as failsafe.
b. Disadvantages:
i. Expensive use of copper.
ii. Subject to EMI[iii] effects (lightning could issue commands).
iii. Early systems required many individuals and a method of monitoring and controlling all of the discrete signals. Delays were based on human reaction time.
iv. Synchronization was by watching visual clocks
v. Delay from command is only slightly less than the speed of light plus the delay of the commanded device except for multiplexed items.
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[i]
NASA- National Aeronautics and Space Administration
[ii]
C2 – Command and Control
[iii]
EMI – Electro Magnetic Interference
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