How does the communication between instruments and gauges (in cars/planes/ships etc.) work?
In: Technology
I used to work on helicopters
There are some gauges/lights that are directly connected to a sensor (temperature, fuel flow, fuel level, metal chip detectors in gearboxes) usually the signal that was sent out by a sensor went directly to the gauge/light for it to display
Some gauges had air lines going into the back of them (barometric pressure, airspeed) gauges like this usually only had wires going into it to power the backlighting
Some screens/panels got data sent to them from a computer or a processor dedicated to that certain system (automatic flight control system, all countermeasure systems, FLIR, radar). Usually these systems had several mechanical/analog inputs or sensors that the processor collected data from to display
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