ETAS ES930.1 - Fig. 5-18 Principle of the Input Signal of a Speed Sensor Wheel

ETAS Digital Input Channels ("DI" Connection)
ES930.1 - User Guide 44
Fig. 5-18 Principle of the input Signal of a "Speed Sensor Wheel"
Each cycle of the example has 14 periods (see Fig. 5-18 on page 44). A cycle
can be assigned to a complete revolution or a section. The measurement result
depends on the start of the cycle.
This process allows determining the average speed using periodic input sig-
nals:
15 9 13 1
Cy cl e n
15 9 13 1
Cycl e n + 1
Speed
60
active time inactive time+
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[rpm]=