MX Fastlogic Sensor Operation
MX Fastlogic sensor operation is an algorithm that
takes into account the pattern of smoke build up over time
and applies fuzzy logic to calculate the level of risk. This
algorithm uses over 200 years of fire test data from
research at the University of Duisburg (Duisburg,
Germany) to determine the likelihood that there is a real
fire and is designed to achieve faster detection of real fires
and slower (preferably no detection) of false alarm
sources.
MX Fastlogic Sensor Basics. The MX Fastlogic
algorithm can be described as an Expert algorithm since it
uses real fire data as a basis for the alarm decision. For any
given application we are obliged to employ the most
suitable detection in terms of response to an actual fire while
minimizing false alarms. This general requirement is clearly
reflected in local and national standards governing fire
detection system designs.
Traditionally, attempts at reducing the occurrence of false
alarms have involved degrading the level of fire protection
afforded, either by raising the alarm threshold of smoke
detectors, introducing delays, or generally employing less
responsive detection. MX Fastlogic sensors give us the
opportunity to offer an improved level of protection while
simultaneously increasing immunity to false alarm.
MX Fastlogic Algorithm - Principle Elements.
Several elements of the detector output are monitored and
this raw data is used by MX Fastlogic algorithm to execute a
series of processes to evaluate the probable presence of fire
including:
Background filtering
Instantaneous smoke density
Rate of change of smoke density
Smoke density weighting
Smoke density peak suppression
Real fire ‘experience’ comparison
Elements synonymous with false alarms are filtered while
those elements indicative of fire are weighted. These results
are continually compared against data derived from real
fires to produce a measure of fire risk. It is against this risk
measurement that the decision to alarm is made.
Maintain Sensitivity and Minimizing False Alarms.
MX Fastlogic sensors are designed to maintain sensitivity to
fire while minimizing false alarms. Many analog detection
systems allow the user to select different smoke detector
sensitivity settings e.g. High, Normal, or Low sensitivity.
Lowering the sensitivity setting is a typical reaction to
unwanted alarms but it usually means that a greater density
of smoke is required to initiate an alarm. This is not the case
for detectors using MX Fastlogic operation which is
comparing the real fire experience against recognized fire
patterns. Changing sensitivity from ‘normal’ to ‘low’ for
example, would delay responses to less likely fire patterns
while maintaining a normal response to more likely fire
patterns. The net result is a reduced sensitivity to possible
false alarms without reducing sensitivity to clearly
identifiable fires.
MX Fastlogic algorithm availability. MX Fastlogic
operation is available for MX photoelectric sensors and
photoelectric/heat sensors. These devices are used in both
life protection and property protection applications
providing reliable, early detection of real fires.
Soft Addressing
MX technology sensors and addressable devices are
addressed using the 801AP programming tool which
presents a simple menu driven user interface that can
automatically increment addresses following each write
operation. This simple to use “soft addressing” technique
avoids misaddressing errors that often occur when coded
switches are used.
The 801AP address programmer can also change
addresses stored in a sensor or other addressable device’s
non-volatile memory, which makes addressing errors easy
to rectify.
Additional Information
Subject Document
4100ES
Installation
Instructions
579-833
Product Reference S4100-0031
4010ES
Installation
Instructions
579-833
Product Reference S4010-0006
4100-5130 and 4010-9916, 25 V
Regulator Module Installation
Instructions
579-812
Compatible MX Devices Refer to page 3
2 S4100-0059-4, 3/2012
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