Garrett SmartScan, Руководство пользователя

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1556800.REV C SmartScan User Manual 17
to the settings in the Algorithm section. Selecting the
“Reset Counts” button will reset all counts back to
zero as well as the Misreads and Standard Deviation.
• Question Mark
Click the question mark icon to obtain specific
software details about the current revision of the
Garrett SmartScan client and the Controller Board.
• Settings (“Gear Box”)
Click on the gear box icon to hide or display all
adjustable parameters in the Settings section.
• Advanced Data
The Advanced Data section shows statistical data
that can be used for analyzing your environment.
The “Misreads” are based on the number of actual
people that passed through the SmartScan and have a
tempature lower than the set point.
The “Mean” is to help identify what the average
mean temperature is for all the people that have
walked through the SmartScan system. This value will
reset to 97.6°F when restarted.
“Std Dev” is the standard deviation from the mean
that is recorded for each person walking through the
SmartScan unit. This value will reset to 0.0 when re-
started.
The “Histogram of Temperatures” graph can be
used as a quick guide to visually see the temperatures
recorded as operating time progresses. This will assist
in providing an indication of the environment if set-
tings need to be adjusted. Click once on the graph
itself and the graph image will increase in size for
easier viewing.
SETTINGS
The "Settings" section (see Figure 4-1) contains all
the adjustable parameters that can be made with the
SmartScan system. Any changes made to this section
are saved automatically.
• Temperature Unit
Operator can select between displaying units of
patron temperature values in either Fahrenheit
or Celsius. When changing units, the system will
require a brief period of approximately 30 seconds for
this change to take place.
• Algorithm
Use this drop-down menu to select one of two
scanning options, Multi-Scan or Statistical.
• Multi-Scan
The SmartScan unit scans patrons multiple times
between the time the patron first steps into the
field of view and the time the patron exits the field
of view.
Multi-Scan algorithm compares all tem-
perature values collected during the pass and
reports the maximum of these values. The
algorithm then compares this temperature value
with the High Limit and Low Limit values that
can be set in the configuration area of the client in-
terface. These are values for the highest and lowest
“normal” temperatures. The end user can change
these values to suit their application but the limits
do not otherwise change.
Example: if a patron generates temperature read-
ings of 97.8°F, 97.9°F, 97.8°F, 98.1°F and 98°F,
this algorithm will show that the patron tempera-
ture was 98.1°F.
The LEDs will indicate whether the patron tem-
perature falls within normal range, is too high or
too low.
IMPORTANT: Understanding Febrile Temper-
ature
CDC guidelines for the Definitions of Symp-
toms for Reportable Illness uses 100.4° F [38°C]
as a febrile core body temperature. However, since
technologies like SmartScan and typical hand-
held IR thermometers are surface body tempera-
ture scanners, the alarm threshold should reflect
an equivalent surface body temperature. Tem-
peratures measured by surface body temperature
scanners typically read about 1° Fahrenheit lower
than the core body temperatures referenced in the
CDC's guidelines (this may vary slightly in un-
stable environmental conditions (i.e. presence of
cold wind, direct sunlight, etc.)) So, the CDC fe-
brile core temperature of 100.4° F [38°C] would
be comparable to a 99.4° F [37.4°C] surface tem-
perature reading.
Setting your SmartScan to a multi-scan alarm
threshold of 100.4° F is unlikely to detect a febrile
individual whose surface temperature reaches fe-
brile levels at only 99.4° F. Therefore, users wish-
ing to follow CDC guidelines should set their
alarm threshold to 99.4° F to better account for
the difference in surface and core body tempera-
tures. See Figure 4-2 for reference.