Questions and Answers
What is the main purpose of sensors in electronics?
To measure physical properties
Which of the following is NOT mentioned as an example of a physical property that sensors can measure?
Speed
What is the role of global positioning systems (GPSs) in the context of sensors?
Locating position in space
What type of output signal do many sensors provide that is proportional to the property being measured?
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What is the purpose of covering general principles before discussing specific sensors?
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Study Notes
Sensors
- Sensors are devices that measure physical properties such as temperature, humidity, stress, and others.
- The primary concern in electronics is converting these measurements into electrical signals.
- The definition of a sensor is broadened to include devices like Global Positioning Systems (GPS) that determine spatial location.
Sensor Output
- Sensors can provide an output signal that is a voltage proportional to the measured property.
- Some sensors are digital devices that provide digital data about the measured property.
Microcontroller Input
- The measurements from sensors often serve as input to a microcontroller.
General Principles
- Before exploring various sensor types, it's essential to understand the fundamental principles underlying all sensing.
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