| SOFTWARE
NAVIGATION |
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SIFTA
Software Interface
For Thermal Alarms |
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| ADVANTECH
ADAM MODULES |
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Link Directly to Your Devices
AXT series fixed-mount cameras equipped with APM
technology can use these Ethernet-based I/O
modules to communicate directly with circuit-based
devices. Thermal alarms
and closed-loop control
outputs can wire directly into PLCs, controllers,
or other circuitry. Buying an ADAM device will maximize
your APM-equipped camera's
connectivity options.
ADAM-6060
6 Digital Inputs, 6 Relay Outputs
(Type A)
ADAM-6052
8 Digital Inputs, 8 Digital Outputs
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| PLUG-INS:
InternalWeb Series |
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Seamless
Process Integration. |
The
Active Pixel Matrix (APM) is an optional,
browser-based region of interest engine that acts as an add-on
to InternalWeb. Use its intuitive
“canvas-and-brush” approach to paint up to eight
regions of interest right on the image using any web browser.
You may also attach a custom emissivity to each region. AXT
Series fixed-mount cameras equipped with APM technology
will process incoming thermal imagery and generate statistics
without a host PC or any external software.
Mean, minimum, maximum, and range data for each region become
available via browser, ASCII TCP Port, or TCP-MODBUS Protocol.
Up to four APM grids may be stored and activated in-camera.
Optional embedded modules may also use APM statistics to perform
additional operations in-camera.
An additional
charge is associated with this technology as well as each
module. However, the SIFTA module is
currently included at no charge when purchasing APM capability.
An Active Pixel Matrix is required for both SIFTA
and ThermoP.I.D. to function. Contact
us for more details.
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This
screenshot has been modified to show all modules and APMs
simultaneously. |
Exploring
The Active Pixel Matrix
Area
Camera Active Pixel Matrix |
Line
Camera Active Pixel Matrix |
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The
APM for area cameras (left) and line cameras (right). |
Painting
palette for the APM. |
Painting
regions and zones of interest is simple. The appropriate
matrix (pictured above) appears in the web browser ready
to be painted by the mouse.
Area cameras display a thermal image underneath the grid
to aid in painting. Simply select a region color from the
palette (shown right) and click and drag to paint. Three
brush sizes are available- a 1x1 brush, a 2x2 brush, and
a 3x3 brush. Notice the grid displaying true thermal pixels-
this shows exactly which pixels are included for each region.
Additionally, a mixing slider changes the brightness ratio
of the grid and image to assist the eye. A new screenshot
may be called up at any time.
Line cameras display the current line in the grayscale columns
to the right of each zone. Unlike the area camera's APM,
the line camera's eight zones may contain similar pixels.
The grayscale line data updates in-browser and minimum and
maximum temperatures are displayed. Additionally, rolling
the cursor over a pixel displays that pixel's current temperature.
Regional Emissivity can be applied as well.
Each region of the area APM can have an emissivity paired
with it by inputting a value from 0.1 to 1.0 in the palette.
For example, when analyzing a rim and tire spinning, the
more emissive tire region can have a unique emissivity from
the less emissive rim region. Now both regions return correct
temperatures. This is known as emissivity mapping.
The line camera's APM has a separate E-zone, since any pixel
must contain only one emissivity value, contrary to other
zones. By default, non-painted pixels and and
undeclared regions inherit
the global emissivity value.
Up to four unique grids and emissivity sets can be stored
in the camera for quick access. These four configurations
are referred to as 'Alpha', 'Bravo', 'Charlie', and 'Delta'.
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The
regional statistics table displays statistics of each painted
region (area camera colors shown). |
| Regional
Statistics update in the browser after saving a
grid/emissivity configuration. Now that regions and emissivity
values have been declared, the camera begins calculating the
minimum, mean, maximum, and range values for all regions.
Processing resumes even after the user logs off or reboots
the camera. These statistics are available to the network
via TCP-MODBUS protocol for PLCs. They can also be aquired
with C code or LabVIEW drivers by using a raw ASCII TCP port.
More importantly, the statistics become possible process variables
for either of the modules featured below. |
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to top of page
| SIFTA
is an embedded module for thermal alarm processing. An acronym
meaning Software Interface For Thermal Alarms, SIFTA offers
eight independent alarm processors that each monitor an APM
statistic. When the appropriate conditions are met, SIFTA
activates the alarm which is attainable via TCP protocols
including TCP-MODBUS. SIFTA can also export alarm status as
DO signals or relays through an Advantech ADAM-6000 Series
I/O Module. Up to four independent configurations can be stored
in-camera. |
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SIFTA's
access panel as it appears in-browser. |
Exploring
SIFTA
| Channel
- SIFTA supports eight channels for alarm
processing. Each channel may 'listen' to any statistic.
Additionally, each channel is paired with a channel
on an optional ADAM I/O module, if applicable. Channels
can be activated or deactivated individually. |
| Alarm
- Alarm status of all channels is shown as
an indicator which glows if an alarm is occurring. This
delivers live feedback from within the browser. |
| Value
to Monitor - Any region (here the line camera's
zone colors are shown) and statistic combination may
be selected for each channel. The channel accepts that
value as the input value. |
| Threshold
- This is the value of interest for the channel.
An alarm occurs for all values below or above the threshold.
The arrow button is a vector setting. The threshold
can be declared in either measurement system, regardless
of which is currently active. |
| Delay
- This value, expressed in seconds, forces
the alarm to remain true for the alotted amount of time
before actually triggering. For instance, if using a
value of 2 seconds, but an alarm condition only occurs
for 1 second, the alarm event never occurs. This parameter
is used to quell fleeting alarm events. |
| Hysteresis
- This refers to a value in degrees that is
used to determine when to deactivate the alarm once
it occurs. A threshold of 40 degrees with an upward
vector and a hysteresis of 5 will cause the alarm to
activate at 40 degrees or higher and deactivate at less
than 35 degrees. Conversely, a downward vector will
cause the alarm to activate at 40 degrees or lower and
deactivate when the value rises above 45 degrees. This
parameter is used to sustain an alarm condition until
it is deemed appropriate for the alarm to deactivate. |
| Channel
Guide - This handy information box depicts,
in plain English, a channel's settings as they are modified.
The guide focuses on whichever channel the cursor shadows. |
Currently,
purchasing APM technology for an AXT fixed-mount camera will
include SIFTA at no charge. Contact
us to find out more, place an order, or upgrade your existing
equipment! |
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to top of page
| ThermoP.I.D.
is an embedded module for closed-loop temperature control.
Using universally recognized P.I.D. algorithms, ThermoP.I.D.
offers eight independent controllers that each ‘listen’
to any APM statistic. Each loop then generates
the recommended control variable for the desired setpoint.
Output is available digitally via TCP-MODBUS or through an
Advantech ADAM-6000 Series I/O Module as an analog signal.
Store up to four unique configurations in-camera. |
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ThermoP.I.D.'s
access panel as it appears in-browser. |
Exploring
ThermoP.I.D.
| Output
- ThermoP.I.D. returns these control variables
for closed-loop control in accordance to the minimum
and maximum values. Consider this the recommended power
for the heating or cooling mechanism associated with
that channel. |
| Channel
- ThermoP.I.D. supports eight channels for
closed-loop control. Each channel may 'listen' to any
statistic. Additionally, each channel is paired with
a channel on an optional ADAM I/O module, if applicable.
Channels can be activated or deactivated individually.
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| Value
to Monitor - Any region (here the line camera's
zone colors are shown) and statistic combination may
be selected for each channel. The channel accepts that
value as the input value. |
| Setpoint
- This refers to the desired value of the
appropriate region or zone. For instance, channel 0
shows that Zone 1's mean temperature is to be kept at
40 degrees Celcius. |
| Control
Variable Minimum & Maximum - This expresses
the range of the control variable output. The values
can be floating-point numbers. The scale can also be
reversed if the channel is associated with a cooling
mechanism. |
| Proportional
- This is the Proportional gain tuning parameter
for the P.I.D. loop, expressed as a number between 0
and 100. The Internet contains a vast amount of information
on tuning P.I.D. loops to acheive the desired result.
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| Integral
- This is the Integral tuning parameter for
the P.I.D. loop, expressed in seconds. The Internet
contains a vast amount of information on tuning P.I.D.
loops to acheive the desired result. |
| Derivative
- This is the Derivative tuning parameter
for the P.I.D. loop, expressed in seconds. The Internet
contains a vast amount of information on tuning P.I.D.
loops to acheive the desired result. |
ThermoP.I.D.
is available at an additional cost and requires APM
technology. Contact us
to find out more, place an order, or upgrade your existing
equipment! |
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InternalWeb,
the browser-based firmware of AXT thermal
imaging products, requires two browser plug-ins
to function correctly. 
