Page 18 - North American Clean Energy September October 2015

solar energy

.continued from page 16.
mental movements are the primary cause of false alarms with motion detection and video analytic software ilters out the false alarm
movements. Video analytic software, combined with an alarm management software platform delivers alarms in the form of JPEG

images including a detection box frame around what caused the alarm. his “Video Alarm System,” concept delivers the alarm and
veriication in small ile sized jpeg image alarm sequences. he small ile size is critical when a project is in a remote area and the only
internet connection is via satellite. In the Video Alarm System concept, the
alarm handler reviews pre-alarm, alarm and post-alarm images in alarm
A quick check to determine if the alarm
management software and immediately identiies what caused the alarm.
concept works:
A super-imposed detection box frame (Image 3) in each image shows the Cellular I/O modules
• Proper video detection: This can be checked guard exactly where to look, then he or she decides to deploy a response or Moxa has launched the newest members of its

by walking around the perimeter in a zig zag clear the alarm from the queue where it will be compiled into a statistical ioLogik family of devices: the ioLogik 2542-
pattern from the perimeter fence to the inside report. In a case where the alarm is caused by a real intruder, the operator is HSPA and ioLogik 2512-HSPA cellular remote
of the service road.
presented with the unique intervention plan for this particular project site.
I/O modules. Both feature High-Speed Packet
Placing thermal imaging cameras on poles around the perimeter in Access (HSPA) ive-band cellular, in addition to
• Illumination: Can the illumination blind
the camera due to fog, rain, or insects like clockwise or counter-clockwise orientation allows each camera to se- Ethernet and serial ports, to provide users with
cure the camera in front of it providing interlocking ields of view and reliable access to remote ield devices.
spiders? This will cause false alarms and is eliminating any blind spots in the perimeter and protecting the cam- Both ioLogik units feature automatic tag
typical of integrated IR cameras.
eras from sabotage. Since ixed cameras are used, the cameras are never generation and reporting for connected sensors
• Sabotage at the pole: Can the cameras
looking in the wrong direction; one can see not only the alarm images, and devices, which allows operators to monitor
or lights be reached from outside the
but also the pre-alarm images that show the moment before the alarm, a large number of ield devices with great ei-
fence? What happens if the camera or light
which provides situational awareness.
ciency. his feature can work in conjunction with
is covered, or the cable cut? Test this by hermal imaging cameras are low-power consuming technology Moxa's MX-AOPC UA Server on the cloud to fur-

unplugging the camera or light, and cover the which can be powered with solar modules and batteries mounted on ther minimize network bandwidth and latency,
camera lens with cardboard.
each pole. A substantial portion of the installation cost of a security an increasingly important consideration for cel-
• Intervention procedure: system is the civil work. Solar powered camera poles and wireless radi- lular data users.
Is an appropriate os that send the video to backhauls at select inverter skids for network he ioLogik 2542-HSPA ofers 4 channels for
intervention plan in place? Is the call-out
working properly? Verify this by entering the access, eliminate the need for trenching and cabling.
analog input and 12 channels for user-conigur-
site without disarming the system. Who will able digital input or output, whereas the ioLogik
Perimeter security at a glance
2512-HSPA ofers eight DIs, eight DI/Os and no
pay intervention fees due to false alarms?
If a security vendor speaks about high resolution cameras and not illu-
analog inputs. Both models provide highly lex-

mination strategy, they have not thought through the challenges of solar
ible I/O and cellular connectivity, with 5-band
plants. he optimum alarming method is video analytics with thermal imaging cameras. While Pan Tilt Zoom Cameras are not UTMS/HSPA communication that supports up
ideal for solar plant perimeter security, they are good for O&M applications. In perimeter security, Alarm Management Systems to 5.76 Mbps upload/14.4 Mbps download, 2
have security value, a Video Management System has no security value, but does have entertainment value. An ideal system RS-232/422/485 ports which support Modbus

would be designed for 100% perimeter coverage with ixed cameras. Going wireless will reduce the cost and complexity of cabling RTU, and 4 Ethernet ports. Critically, the devices
every pole to the nearest inverter skid. While no security system can eliminate all false alarms, an alarm management strategy are designed for rugged industrial use and can
will make the diference between responding to every tumbleweed or only the intruders.
withstand -30° to 70°C (-22° to 158°F) operating
temperatures while consuming only 13 watts

Anson Moran is the chief executive oicer at Viasys Solar Secure, Inc.
with HSPA enabled. Moxa is backing both mod-
els with a 5-year warranty.
Viasys Solar Secure | www.viasys-iv.com
Moxa | www.moxa.com

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SEPTEMBER/OCTOBER 2015 nacleanenergy.com