Sensors Monitor And Measure Our Bodies And The World Around Us
Sensors are all around. They are in automatic doors, at cash registers, in doctors’ offices and hospitals. They are used inside the body and outside.
Sensors detect aspects of the physical world – matter, energy, force – similarly to a person’s or animal’s senses. But instead of translating the information into nerve impulses, sensors translate them into electrical signals. The signals can be stored, processed on a computer or displayed on a screen. They can be a current or voltage that is constant or varying with time.
Sensors answer many important questions such as how well-inflated are a car’s tires, whether ice is building up on an airplane’s wings, whether carbon monoxide is in the air and how much oxygen is in your blood.
As an electrical engineer, I work with sensors all the time...