The magnetic angle sensors Novotechnik's RFC-4800 series are compact, easy to mount, and measure the rotation angle over full 360 degrees with a resolution of up to 14 bits. Now there are these contactless sensors especially for use in commercial vehicles also with CAN SAE J1939 interface.
This protocol offers high immunity to interference, low cabling and diagnostic options. There are also other attractive sensor functions such as parameterizable direction of rotation, position offset and a (volatile) revolution counter. The position and speed signals are output on one or two channels.
The magnetic angle sensors are also very robust: they withstand vibrations and vibrations up to 20 g as well as shocks up to 50 g and, above all, meet all the EMC specifications required in mobile applications. The keen requirements of the ECE-R10 regulation for electromagnetic compatibility are far exceeded. The permissible ambient temperature is between -40 ┬░ and + 105 ┬░ C, the requirements of degree of protection IP67 or IP6K9K are fulfilled.
The sensors can be easily mounted in the vehicle. For angle detection, a positional magnet is attached to the rotating axis. Depending on the angle of rotation, the orientation of the magnetic field and thus the signals of the sensor, which is only about 15 mm in diameter, changes. This signal change is converted by the sensor IC into a rotation angle-proportional output signal and made available to the higher-level control. The (independent) linearity of the measurement signal is ┬▒ 0,5%, the repeatability is 0,36 ┬░.