Light and electronics experts Hella reports 750 million so-called sensors with CIPOS (Contactless Inductive Position Sensor) technology in the market. Position sensor technology goes back to late 90s.
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Position sensor technology in the automotive environment: sensors
with CIPOS technology. Image: Hella |
As Hella notes, position sensors with CIPOS technology are robust
against extreme temperatures, vibrations and magnetic
radiation. In the late 1990s, the electronics experts developed the CIPOS
technology, which is used in numerous application fields as well as in
safety-relevant applications up to ASIL D worldwide. For example in accelerator generators, steering and vehicle level
sensors as well as in motor position sensors.
This technology is also used by actuators on the turbocharger, on the
throttle valve, on the radiator grille or on thermal
management. The special feature of the CIPOS technology is that it makes it
possible to measure positions as highly exact, absolute
values. This takes place without contact according to an inductive
method. A further advantage of the sensors is their resistance to vibration,
moisture.
As emphasized by Hella, the CIPOS technology is a crucial building
block for electromobility and autonomous driving. In electric vehicles
brushless motors with high power and therefore with high currents are
used. The CIPOS technology working inductively in the MHz range comes
without a permanent magnet and is not affected by the resulting
magnetic fields of the motor currents due to the principle, says the
manufacturer. An important prerequisite for autonomous driving is the further
development of the X-by-Wire systems. Usually, steering movements or the actuation of the brake pedal are
transmitted mechanically or hydraulically. In the case of X-by-wire systems, however, these are transmitted
electronically.
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