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Siemens Mobility Limited
Sopers Lane, Poole, Dorset
BH17 7ER
Version
11
Page 88 of 117
Status
Issued
Last Editor
Jeerh, Manpreet
Date
March 2020
Document
Name
WIMAG GENERAL HANDBOOK
Doc. No.
667/HB/47200/000
Copyright
©
Siemens Mobility Limited 2012. All Rights Reserved.
2. If there are duplicate timeslots, Auto-assign timeslots.
3. Ensure the system installation is appropriate: repeaters are set beyond the
sensors, check wireless performance
4. Investigate for Magnetic Interference (see below)
5. Check the AP System Settings (thresholds, event) Check the recalibrate timeout
values (under the AP's Detection tab). Five minutes is default.
16.2.7 Occasional Sticking Sensors
1. Check AP/System/Detection and AP/System/Event parameters for correctness
2. If wireless performance is appropriate, upgrade all sensors to latest firmware
16.2.8 Sensors not executing commands, settings not being modified
1. Update the system so that a non-default colour is used. This is particularly
pertinent if there are multiple systems within the vicinity.
2. If there are duplicate timeslots, Auto-assign timeslots.
3. Ensure the system installation is appropriate (see above)
16.2.9 Magnetic Interference
1. There are some installation environments that may mean magnetic interference
will cause false detection or “stick highs”. If magnetic interference is suspected
(e.g. localised overheads power cables for trams or very localised underground
power cables), the following step could be used to confirm that the issue is not
magnetic:
2.
Use Traffic Dot to set the sensor in question to ‘D Mode’. Typically the sensors
are set in B Mode.
3.
Enter ‘Superuser Mode’ (password ‘355/113’),
4. Set sensor to D (Raw XYZ) Mode
5. Go to Tools Charts XYZ Chart (real time plot of the detection axis).
6. If the tracking lines are relatively constant and the noise is b3 and -10
then there is no magnetic interference. Values outside of these limits suggest a
magnetic interference issue.
7. In case of noise caused by tram aerial power lines: in general do not install
sensors closer than 4-6 meters (horizontally) from aerial power. Disable the Z
axis and enable Filter 4 on the affected sensor. If occasional stuck highs are still
observed, especially when a tram is breaking or accelerating even at some
distance from the sensor, move the sensor a few meters further away. N.B. the
impact of switching the Z axis off, is that the detection zone may become slightly
more inconsistent and presence will be more difficult to maintain. Use an
appropriate sensor extension e.g. 150-250ms
8. In case of noise caused by underground power cables (50Hz), if the noise is not
excessive (within +- 20 from baseline), enable Filter 4. If stuck highs are still
observed, move the sensor a few meters further away on the traffic lane. If the
cable runs parallel to the lane, try moving the sensor to the side of the lane