Sensitivity Analysis of a Sensor: Calculating and Analyzing Resistance Changes

[Oscar6330]

Hello!

I have the following problem

My Physical System
I have a sensor which changes resistance on application of force.

Experiments performed
In order to characterize the output of the sensor, I have done some experiments. In the one of interest here, I applied different forces and took 4 readings at each force step. Total force steps are 5.

My final graph is force on X-axis and magnitude of resistance on Y-Axis.

Problem
I want to analyze sensitivity of the sensor.

What I have tried
I tried to caluclute the sensitivity of the sensor using the acquired data in GraphPad. But there seem to be some error. i want to calculate it using manual mathematics now.

Kindly guide me how to do it. An example will be great.

Thanks for your time

 

[Valkarie]

!Calculating the sensitivity of a sensor can be done by first plotting the data points on a graph. Then, calculate the slope of the line connecting two points and divide it by the change in force between the two points. This will give you the sensitivity of the sensor for that particular force step. You can then repeat the process for each force step to get the overall sensitivity of the sensor.For example, if you have two points (x1, y1) and (x2, y2), the slope of the line connecting these two points is (y2-y1)/(x2-x1). The sensitivity of the sensor is then equal to (y2-y1)/(x2-x1)/(x2-x1). This will give you the sensitivity of the sensor for the particular force step. You can then repeat this process for each force step to get the overall sensitivity of the sensor.