Active speed/position sensor
Hall effect and GMR sensors are of the active type,
requiring a supply of electrical power. They detect the magnetic fi eld created by the passage
of gear teeth or the alternating poles of a ring magnet,
delivering an electrical signal that the electronic control
system processes to determine the speed and/or angular
position of the rotating shaft.
Compared to VR sensors, these active sensors are smaller,
detect lower speeds and can be used for zero-speed
position sensing.
Electricfil solution - ready technologies
Characteristics
- Temperatures -40°C to +160°C
- Zero-speed sensing (e.g. crankshaft),
TPO function (e.g. camshaft) - High withstand capacity to severe environments
- Low signal-processing requirements
- Large airgaps up to 6 mm for a ring magnet or 3mm for metal target
- Accuracy:
- camshaft: +/-1.5° (45 mm target diameter)
- crankshaft: +/-0.5° (100 mm)
- clutch input/output shaft: +/-0.1°C (typical value) - Repeatability: +/-0.02° (100mm)
- Size 12 mm diameter
- Interface: 2 or 3-wire, digital pulses
Electricfil knowhow
- Wide range of packages and interfaces
- Wide range of ASICs available
Par domaine
Par application
- LVDT
- Hall position sensor
- Eddy-current position sensor
- Hall position switch
- VR speed/position sensor
- Active Hall-GMR sensor
- Oil temperature
- Multi-sensor modules
- Ignition wire set
- Integrated ignition units
- Integrated ignit.coil & wire set
- Pencil coils
- Eddy-current speed sensor
- Smart battery sensor
- Hall current sensor
- Temperature sensor
- Active speed/position sensor
- Active speed/pos./direction
- Magnetic ring system
- Magnetic ring module
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