Hall-Effect Sensors

Without sensors most electronic applications would not exist-sensors perform a real world. Hall effect sensors, based on a magnetic phenomena, are the most commonly used sensing technologies of today. In the 1970s it has been possible to build Hall effect sensors on integrated circuit with onboard signal processing circuitry, vastly reducing the cost and enabling widespread practical use. One of the first major applications was in computer keyboards, replacing mechanical contacts. Hundreds of millions of these devices, including automobiles, computers, industrial control systems, cell phones, and many others.

The importance of these sensors, however, contrasts with the limited information available. Many recent advances in miniaturization, smart sensor configurations, and networkable sensor technology have to design changes and need for reliable information. Most of the technical information on Hall sensors are delivered to a particular product line. The design and control engineers need an independent, readable source, and so on. How does it work? of uses. This book covers:
. the physics behind Hall effect sensors
. Hall effect transducers
. transducer interfacing
. integrated Hall effect sensors and how to interface to them
. sensing techniques using Hall effect sensors
. application-specific sensor ICs
. relevant development and design tools

This effect is reflected in Hall effect and applications!

Information about various technologies is scarce, scattered and hard to locate. Most of it is either too theoretical for working engineers. Engineers and engineering managers need a comprehensive, up-to-date, and accurate reference to use when scoping out their designs. Hall effect sensors.

* A comprehensive, up-to-date reference to the use of Hall effect sensors

* Replaces other information about sensors that is too theoretical, too biased toward one particular manufacturer, or too difficult to locate

* Highly respected and influential author in the burgeoning sensors community

1. Hall Effect Physics
The theory and math behind the Hall effect.
2. Practical Hall Effect Transducers
Key characteristics, integrated Hall transducers, transducer geometry, examples.
3. Transducer Interfacing
Modeling Hall transducers, biasing, amplifiers, compensation temperature, offset adjustment.
4. Integrated Sensors, Linear and Digital Devices
Linear sensors, switches and latches, speed sensors, application-specific devices.
5. Interfacing to Integrated Hall Sensors
Interface issues, line driver circuits, the pull-up resistor, interfacing to standard logic devices, discrete logic, driving loads, LED interface, incandescent lamps, relays, solenoids, and inductive loads, wiring reduction schemes, encoding and serialization, digital to analog encoding, voltage regulation and power management.
6. Proximity Sensing Techniques
Head-on sensing, slide-by sensing, magnet null-point sensing, float-level sensing, linear position sensing, rotary position sensing, Vane switches,
7. Current Sensing
Resistive current sensing, free-space current sensing, toroidal current sensors, digital current sensor, closed-loop current sensors.
8. Speed and Timing Sensors
Competitive technologies, magnetic targets, vane switches, geartooth sensing, single-point sensing, differential differential, threshold, speed and direction sensing.
9. Application-Specific Hall Sensor ICs
Micro-power switches, two-wire switches, networkable sensors, power devices, smart motor control.
10. Development Tools for Hall Effect Sensors
Electronic bench equipment, magnetic instrumentation, mechanical tools, magnetic simulation software.
Appendix A. Brief Introduction to Magnetics
Appendix B. Suppliers List
Glossary
References and Bibliography
index