Abstract: | |
Sensors are the link between the digital and the analog world. They can be found in almost all
electronic systems and provide the system with access to environmental data. The disturbance
of such enviromental data can have serious consequences. For example, an oil pressure sensor
on a U.S. Navy ship was disturbed by an RF signal in such a way that a shutdown signal in the
automatic power control system was triggerd. Likewise, some early ABS systems in Germany
were affected by a radio transmitter in such a way that there were severe problems with the brakes
in certain highway sections [3]. Although sensors systems are susceptible to interference, there is
insufficient research on the susceptibility of sensors systems to interference. There are studies on
the susceptibility of microelectromechanical systems (MEMS) to acoustic signals [7, 8]. However,
it was pointed out in [5] that electromagnetic interference is generally not explicitly addressed or
even neglected in sensor design.
In our previous work [4] we have shown that a MEMS sensor with Inter-Integrated Circuit (I²C)
interface can be disturbed by electrical fields. The effects include communication breakdowns,
controller crashes, short term and permanent sensor value errors. In [2], similar errors are reported
for two other sensors with I²C interface.
In this work, we focus on the cause of the observed interference by localizing the interference
susceptibility and analyzing the I²C communication. First, the measurement setup and the sensors
used are presented in Section 2. The measurement results are shown in Section 3. Finally, in
Section 4 we give a short conclusion and an outlook.
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License of this version: | CC BY 3.0 DE - https://creativecommons.org/licenses/by/3.0/de/ |
Publication type: | BookPart |
Publishing status: | publishedVersion |
Publication date: | 2022 |
Keywords german: | EMV, Verträglichkeit, Elektromagnetik |
DDC: | 600 | Technik, 621,3 | Elektrotechnik, Elektronik |
Controlled keywords(GND): | Konferenzschrift |