霍尔效应传感器

This manual may be considered as two parts: Chapters 2 through 5 present the basic information needed to apply Hall effect devices. Chapter 6 brings this information together and relates it to the design and application of the Hall effect sensing systems.

Chapter 2, Hall effect sensors. Introduces the theory of operation and relates it to the Hall effect sensors. Both digital and analog sensors are discussed and their characteristics are examined. This chapter describes what a Hall effect sensor is and how it is specified. 

Chapter 3, Magnetic considerations. Covers magnetism and magnets as they relate to the input of a Hall effect device. Various magnetic systems for actuating a sensor are examined in detail. 

Chapter 4, Electrical considerations. Discusses the output of a Hall effect device. Electrical specifications as well as various interface circuits are examined. These three chapters (2, 3, and 4) provide the nucleus for applying Hall effect technology. 

Chapter 5, Sensing devices based on the Hall effect. These devices combine both a magnetic system and a Hall effect sensor into a single package. The chapter includes vane operated position sensors, current sensors, gear tooth sensors and magnetically-operated solid state switches. The principles of operation and how these sensors are specified are examined. 

Chapter 6, Applying Hall effect sensors. This chapter presents procedures that take the designer from an objective (to sense some physical parameter) through detailed sensor design. This chapter brings together the Hall sensor (Chapter 2), its input (Chapter 3), and its output (Chapter 4). 

Chapter 7, Application concepts. This is an idea chapter. It presents a number of ways to use Hall effect sensors to perform a sensing function. This chapter cannot by its nature be all inclusive, but should stimulate ideas on the many additional ways Hall effect technology can be applied. 

This manual may be used in a number of ways. For a complete background regarding the application of Hall effect sensors, start with Chapter 1 and read straight through. If a sensing application exists and to determine the applicability of the Hall effect, Chapter 7 might be a good place to start. If a concept exists and the designer is familiar with Hall effect sensors, start with Chapter 6 and refer back to various chapters as the need arises.