Memory Card
You want to know the quantity (real value), you use a sensor to measure it, the sensor is not perfect (we expect the sensor to have an input-output function instead this specific sensor has a function different from the real one ).
So instead of reading the value (expected/real value) you will read an electrical value , then you will “traduce” this already wrong value into the measured value using this formula where is the correct function, given by the producer, but not the nominal one so it will introduce another error.
So this are the passages:
1.
2.
3.
4. We define the accuracy as:
- ==Accuracy of a sensor is usually intended as maximum error==.
- : true value of
- : measured value of
Which is equivalent to:
- : true value of
- : inverse function of the measured output of the sensor ().
- This is ==, the true relationship between and of your sensor, of the specific sensor that you are using, you don’t know this one, this is the true one==.
- : true input-output function.
