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Sensor de Hall

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Re: Sensor de Hall

Notapor Kile » Mié, 27 Jun 2012, 16:34

El alcance en el sensor de Hall es la diferencia de voltajes de salida: Vo (Con el campo magnetico maximo)- Vo (Con el campo magnetico minimo)

En estos apuntes de Honeywell viene explicado (en ingles) en la pagina 11 (6 del capitulo 2)




HALL EFFECT SENSING AND APPLICATION
Chapter 1 • Hall Effect Sensing
Introduction ............................................................................................................................... 1
Hall Effect Sensors..................................................................................................................... 1
Why use the Hall Effect .............................................................................................................. 2
Using this Manual....................................................................................................................... 2
Chapter 2 • Hall Effect Sensors
Introduction ............................................................................................................................... 3
Theory of the Hall Effect ............................................................................................................. 3
Basic Hall effect sensors ............................................................................................................ 4
Analog output sensors................................................................................................................ 5
Output vs. power supply characteristics ..................................................................................... 5
Transfer Function ....................................................................................................................... 6
Digital output sensors ................................................................................................................. 7
Transfer Function ....................................................................................................................... 7
Power Supply Characteristics..................................................................................................... 8
Input Characteristics .............................................................................................................................. 8
Output Characteristics........................................................................................................................... 8
Summary................................................................................................................................... 8
Chapter 3 • Magnetic Considerations
Magnetic Fields .......................................................................................................................... 9
Magnetic materials and their specifications ................................................................................ 9
Basic magnetic design considerations...................................................................................... 10
Magnetic materials summary.................................................................................................... 11
Magnetic systems..................................................................................................................... 11
Unipolar head-on mode ............................................................................................................ 12
Unipolar slide-by mode............................................................................................................. 12
Bipolar slide-by mode ............................................................................................................... 13
Bipolar slide by mode (ring magnet) ................................................................................................... 14
Systems with pole pieces ..................................................................................................................... 15
Systems with bias magnets................................................................................................................... 16
Magnetic systems comparison ................................................................................................. 17
Ratiometric Linear Hall effect sensors ...................................................................................... 18
Summary................................................................................................................................. 18
Chapter 4 • Electrical Considerations
Introduction .............................................................................................................................. 19
Digital output sensors............................................................................................................... 19
Electrical specifications ........................................................................................................................20
Specification definitions............................................................................................................ 20
Absolute Maximum Ratings.................................................................................................................20
Rated Electrical Characteristics............................................................................................................21
Basic interfaces....................................................................................................................... 21
Pull-up resistors ....................................................................................................................... 21
Logic gate interfaces............................................................................................................................22
Transistor interfaces .............................................................................................................................22
Symbols for design calculations ............................................................................................... 24
Analog Output Sensors ............................................................................................................ 29
Electrical specifications ........................................................................................................................30
Basic interfaces....................................................................................................................................30
Interfaces to common components .......................................................................................... 31
Summary................................................................................................................................. 32
Chapter 5 • Hall-based Sensing Devices
Introduction .............................................................................................................................. 33
Vane-operated position sensors............................................................................................... 33
Principles of Operation .........................................................................................................................33
Sensor Specifications...........................................................................................................................35
Digital current sensors.............................................................................................................. 36
Principles of Operation .........................................................................................................................37
Sensor Specifications...........................................................................................................................37
Linear current sensors.............................................................................................................. 38
Principles of Operation .........................................................................................................................38
C.losed Loop Current Sensors ................................................................................................. 39
Principles of Operation .........................................................................................................................39
Mechanically operated solid state switches.............................................................................. 41
Principles of Operation .........................................................................................................................41
Switch specifications ................................................................................................................ 42
Gear Tooth Sensors................................................................................................................. 42
Principles of Operation .........................................................................................................................43
Target Design.......................................................................................................................... 43
Summary................................................................................................................................. 44
Chapter 6 • Applying Hall-effect Sensing Devices
General sensing device design ................................................................................................ 45
Design of Hall effect-based sensing devices ............................................................................ 47
System definition..................................................................................................................... 48
Concept definition…Discrete sensing devices .....................................................................................48
Digital output Hall effect-based sensing devices ...................................................................... 49
Design approach… Non-precision applications ...................................................................................49
Design Approach… Precision applications..........................................................................................51
Linear output Hall effect-based sensing devices ...................................................................... 53
Table of Contents
For application help: call 1-800-537-6945 Honeywell • MICRO SWITCH Sensing and Control iii
Design approach… Linear output sensors ........................................................................................... 53
Design approach… Linear current sensors .......................................................................................... 55
Sensor packages...................................................................................................................... 57
Design approach… Vane-operated sensors ......................................................................................... 58
Design approach… Digital output current sensor................................................................................ 59
Summary................................................................................................................................. 60
Chapter 7 • Application Examples
Flow rate sensor (digital) .......................................................................................................... 63
Sequencing sensors................................................................................................................. 63
Proximity sensors ..................................................................................................................... 64
Office machine sensors ............................................................................................................ 64
Adjustable current sensor......................................................................................................... 65
Linear feedback sensor ............................................................................................................ 66
Multiple position sensor ............................................................................................................ 66
Microprocessor controlled sensor............................................................................................. 67
Anti-skid sensor........................................................................................................................ 67
Door interlock and ignition sensor.............................................................................................67
Transmission mounted speed sensor ....................................................................................... 68
Crankshaft position or speed sensor ........................................................................................ 68
Distributor mounted ignition sensor .......................................................................................... 68
Level/tilt measurement sensor..................................................................................................69
Brushless DC motor sensors.................................................................................................... 69
RPM sensors........................................................................................................................... 70
Remote conveyor sensing ........................................................................................................ 70
Remote reading sensing........................................................................................................... 71
Current sensors........................................................................................................................ 71
Flow rate sensor (linear output ................................................................................................. 72
Piston detection sensor ............................................................................................................ 73
Temperature or pressure sensor .............................................................................................. 73
Magnetic card reader................................................................................................................ 74
Throttle angle sensor................................................................................................................ 75
Automotive sensors.................................................................................................................. 76
Appendix A • Units and Conversion Factors................................................. 77
Appendix B • Magnet Application Data.......................................................... 79
Appendix C • Magnetic Curves....................................................................... 89
Appendix D • Use of Calibrated Hall Device .................................................. 99
Glossary......................................................................................................... 103
Kile
 
Mensajes: 161
Registrado: Dom, 24 Jul 2011, 13:20


Re: Sensor de Hall

Notapor Kile » Vie, 29 Jun 2012, 11:03

Buscando sobre Latch Bipolar encontre esto, no acababa de entenderlo bien:

Imagen

Imagen

Imagen

Hall IC Introduction



Hall Effect Senor IC Categories
Bipolar Hall Switch
Unipolar Hall Switch
Latch Hall Sensor IC
ratiometric linear hall Effect IC
Kile
 
Mensajes: 161
Registrado: Dom, 24 Jul 2011, 13:20


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