CP3 version 3003
77
Programming the Sensor
The count sensor is programmed by means of the SBP2WEB24 configuration tool. This tool can be
downloaded here:
http://www.productselection.net/MANUALS/UK/cp3_manual.pdf
The count sensor has some features that can be useful during the installation. Depending on the speed of
the cars, the sensor can be programmed to count slower or faster by using the filters in the configuration
tool.
Filter
Measure 1 Measure 2 Measure 4 Measure 6
Km/h
45
33.7
16.8
8.4
msec
80
160
240
320
The above table gives the installer some notion of choosing between the four filters. The correct filter
depends on the filter’s maximum speed. If cars are driving 10 Km/h, choose filter 4. If cars are driving 20
Km/h, choose filter 2. Filter 1 must be used only in very exceptional circumstances. This filter is so sensitive
that false detections may occur, caused, for instance by windy weather. In situations where a car goes more
than 30Km/h, we always suggest speed bumps for slowing down the speed. The slower speed will increase
the accuracy of the counting system. We recommend filter 4 or filter 6 as the most common filters to use.
Appendix A:
Counting system accuracy
Determination of a counting system‘s accuracy in number/percent is quite challenging and needs further
explanation. Suggestions for optimising the accuracy, based on experience gained from numerous carpark
installations, will follow below.
The accuracy is not solely determined by the sensors and the MZC, but also by the physical environments
and the general installation.
The sensor must be mounted on a solid surface protected against shock. Any movement of the sensor may
cause faulty activations resulting in miscounts. Therefore, the sensor should be mounted directly in the
ceiling. However, if the ceiling is more than 4 m from the floor, it will be necessary to lower the sensor to
the required level using conduits or rail mounting. Of course the mounting must be completely robust and
shock-free.
In an ideal world, the system should be quite accurate and we have experienced an accuracy of 98 % on
most floors (upper floors) in a Carpark building.