Key terms/definitions
In this section, we define some key concepts associated with sensors and actuators:
- Accuracy: Accuracy refers to the ability of sensors to provide a result as close to real value as possible.
- Precision: Precision refers to the capability of the sensor to give the same readings for the same measurement over time and under similar conditions. Although accuracy and precision seem like similar terms, they differ in the sense that accuracy refers to how close the reading reported by the sensor is to the actual value, whereas precision refers to the ability of the sensor to detect even small changes. The difference between accuracy and precision can be better understood by the following figure:
Figure 9.1 – Difference between accuracy and precision
