Chapter 2: Sensing the World
This chapter introduces the principles and applications of sensors used in a wide variety of embedded systems. Passive sensors measure attributes of the world such as temperature, pressure, humidity, light intensity, and atmospheric composition. Active sensors use energy-emitting technologies such as radar and lidar to detect objects and measure their position and velocity.
We will examine a broad range of sensor types as well as the communication protocols used for transferring sensor data into a processor. The chapter also discusses the processing an embedded system must perform on raw sensor measurements to provide actionable data for use by a processing algorithm.
After completing this chapter, you will have ...
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