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Terms in this set (25)
A device that responds to physical stimulus in a useful way
A useful device or mechanism that converts energy of one form into energy of another form.
A device or mechanism capable of performing an intended physical action.
The quantity that is sensed- input to a sensor
Generic term meaning any physically perceptible effect (motion , light, chemical result, etc.)
Aka the "output" of an actuator
A sensor that requires external power to operate.
Generates its own electric signal and does not require a power source.
A sensor that requires physical contact with the stimulus
Requires no physical contact
A sensor that reacts to a stimulus on an absolute scale.
The stimulus is sensed relative to a fixed or variable reference.
"Analog" devices can generate or respond to signals having any of an infinite number of levels or values (think voltage)
"Digital" devices can only generate or respond to values having particular values (think high/low)
Unexpected behavior between systems
-Power, Power density, energy
-Voltage, Current, Pressure, Force
Of a sensor is defined as the change in output for a given change in input, usually stated for a unit change in input.
Represents the slope of the transfer function
Lowest and highest values of the stimulus.
The arithmetic difference between the highest and lowest value of the stimulus that can be determined using the sensors within acceptable errors.
Input full scale (IFS)
Same as span
Output full scale (OFS)
Difference between the largest and smallest sensor output. Corresponds to input span.
Ration between the upper and lower limits (absolute qualities) or span/resolution (relative qualities). Often in dB.
Minimum increment in stimulus to which the sensor can reliably and repeatably respond.
For an actuator it is the minimum output increment it can provide.
Ratio of the rated voltage and the resulting current through the input port of the device with the output port open (no load).
Ratio of the rated output voltage and short circuit of the port (i.e. current when the output is shorted).
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