Example Vr Sensor Signals - Ametek DN VR-608 Series User Manual

© Copyright 2024
United Electronic Industries, Inc.
Toothed
Wheel
VR Analog
Signal
VR Digital
Signal
Figure 2-2 Example VR Sensor Signals
A VR interface board reads in the analog waveform and conditions it into a
digital signal (Figure 2-2). The digital signal goes high when a positive to
negative zero crossing (ZC) is detected and resets to low when the signal level
rises above a certain threshold. Therefore, rising edges of the pulse train
correspond to tooth detections. The pulse train feeds into a digital counter/timer
which measures the number of teeth and the time between teeth. Raw data can
then be used to calculate shaft properties such as rotational speed, acceleration,
position, and torque.
Note that VR sensors are sensitive to noise. Use best practices when wiring the
device and shielding signals.
February 2024
DNx-VR-608 Variable Reluctance Interface
APT
ZC
tooth detected reset ZC comparator
Chapter 2
Functional Description
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