Please choose one of the following products
ENCLOSURE™
- Volumetric Series
1) Who uses the ENCLOSURE™-Volumetric Series systems?
ENCLOSURE™-Volumetric Series systems are used widely in the areas of
utilities (hydro sites, nuclear sites, water treatment plants, water reservoirs) correctional
facilities, law enforcement, military, and VIP properties.
2) How
do the ENCLOSURE™-Volumetric Series systems work?
 The technology uses a leaky coaxial cable, also called ported coax, to create an electromagnetic volumetric detection field
of 1m (3.3 ft) in radius around the coaxial sensor cable.
Zone length varies from 5 to 50 meters (16 to 165 feet) maximum of volumetric perimeter protection. Each processor is capable of 2, 4 or 8 individual detection zones.
3) Are detection
and false alarms affected by weather conditions such as heavy rain, snow,
high or low temperatures ,fog, dust and sand, storms, frozen ground,
high humidity, sun sets and sun rises?
ENCLOSURE™'s ability to detect and the occurrences
of false alarms are typically not affected by weather conditions such
as:
rain - does not affect system's performance, only
running water within the detection field can cause enough interference
which could increase the false alarm rate.
high or low temperatures - does not affect the
system's performance as it will operate over the temperature range of
:
- 40° C to + 70° C (- 40° F to + 160° F)
dust and sand storms - does not affect the system's
performance
snow - does not affect system performance for
snow up to 1.0 m (3.3 ft) in height (the maximum radius of the detection
zone)
fog - does not affect the system's performance
as it operates in a humidity range up to 100% condensing (i.e. rain)
frozen ground - does not affect the system's performance
In general, the system automatically readjusts itself
using CFAR (Constant False Alarm Rate) algorithm in order to adjust the
system's gain based on environmental stability.
4) Can animals
or birds cause false alarms?
The
system is designed to detect human intruders weighing more than 30 Kg.
(70 lb.). The chances of detecting a small animal or bird weighing less
than 10 Kg. (22 lb.) is less than 5% but a group of small animals within
the detection field at the same time could create enough interference
to cause a false alarm. In addition, the system has optimum detection
for objects (or animals) that are the size equivalent to half the wavelength
(called resonance effect). Operating in the TV or FM band (76 to 108 MHz),
the half wavelength is approximately 1.8 m (6.0 ft) which maximizes detection
for human sized objects.
5) Will the system
be affected by the presence of high power lines or transformers?
No,
high power lines or transformers do not affect the ability to detect intruders
and they do not increase the false alarm rate. In contrast to AM broadcast
signals, TV/FM broadcast signals are more immune against electromagnetic
sources of noise.
6) Will
high power airport radar affect the performance of the system?
No,
since airport radar is outside the TV and FM bands (76 to 108 MHz) used
by ENCLOSURE™, it does not affect the performance of the system.
Note that the TV and FM bands are highly regulated by government agencies
in order to prevent any unintentional sources of interference. In addition
the system operates simultaneously at four different frequencies (called
quasi-spread-spectrum) and automatically rejects the most unstable ones.
This quasi-spread-spectrum technique makes the system more immune to interferences.
7) Will
fighter aircraft electronic counter measure (ECM) equipment affect
performance of the system?
No,
since ECM equipment on fighter aircraft operates outside the TV/FM band
(76 to 108 MHz) used by the ENCLOSURE™ sensor it does not affect
the sensor's performance. Note that in the event that the entire TV or
FM band is jammed, the ENCLOSURE™ is equipped with a jammed detect
circuitry that will trigger automatically the trouble relay.
8) Will
police radios affect the system's performance?
No,
police radios operate outside the TV/FM band (76 to 108 MHz) utilized
by the ENCLOSURE™ sensor, therefore, they do not affect the sensor's
performance.
9) Will
the ENCLOSURE™ processor withstand a nearby lightning strike?
All
entry ports to the system are protected by gas discharge tubes, against
inductive currents from lighting, as per UL 497B regulation. We do recommend
the use of lightning surge arrestors to protect all electronic components from
direct hits which cannot be compensated by gas discharge tubes.
10) How is
the system installed on metal fences?
For
a metal fence application, the leaky coaxial sensor cable is mounted on the inside of
the fence using a non-metallic stand-off to space the sensor cables 20
cm (8.0 inches) from the fence. These stand-offs should be placed every
meter (3.3 ft) or as required. However, it is recommended to lay the sensor
cable on the surface, inside the fence area (see Application Note 3 - "ENCLOSURE™ for Fence Compound Applications"). Also see our Acoustic Series for direct fence mounted sensor cable.
11) What
skills are required to install the system?
Installers
should be familiar with cable TV installation and repair techniques. They
should also be capable of installing TNC type connectors. As well, installers
should be capable of basic electricians work such as "fishing" cable, and conduit installation for the lead-in cable.
12) Do installers
have to return to the site once the cable settles?
No,
performance of the system is not affected by the cable settling. The system
self calibrates continuously, therefore, installers don't have to return
to the site once the cable settles ("drifts").
13) Is routine
maintenance required?
No,
the ENCLOSURE™ system does not require ongoing maintenance to be
operational. Only one preventive site visit per year is recommended
to repair hardware damages if any and to recalibrate or fine tune any
faulty zone.
14)
Can cable splices be made in the field?
Yes,
the sensor cable can be spliced anywhere in the detection zone using basic
cable TV splicing techniques. A completed subsection of the sensor cable
could be replaced by 40% loose braid RG-11 coaxial cable.
15) Do connectors
have to be sealed?
Yes,
even if waterproof connector are used, the connectors must be sealed using
standard cable TV sealing techniques and materials.
16) Will
trees cause false alarms?
ENCLOSURE™
can be used in wooded areas. Dry trees moving due to the wind do not cause
false alarms. Trees that are wet from the rain and move due to the wind
induce additional interference which cause the threshold to rise, hence
reduces slightly the probability of detection, by maintaining the false
alarm rate constant. Usually, a set back distance of half the tree height
is sufficient or only a few meters in certain configurations.
17) Will
standing water cause false alarms?
ENCLOSURE™
can operate in the presence of standing water. However, if there are ripples
on the surface of the water of 2.5 cm (1.0 inch) high, the ripples induce
noise which causes the threshold to rise, hence reduces the probability
of detection, by maintaining the false alarm rate constant.
18) Will
melting ice cause false alarms?
Ice
accumulation on the cable or ice melting do not cause false alarms.
19) What
is the effect of a metal fence and large metal objects on the system?
Metal
fences and metal objects may act as a shield which interferes with reception
of the TV/FM signals. ENCLOSURE™ can operate in the presence of
metal fences and object by placing the cable at a minimum distance from
the fence or metal object (the minimum distance is one-half the height of the metal fence
or object). Moving metal object within the minimum distance will cause
false alarms.
20) Will
nearby vehicle traffic cause false alarms?
Both
pedestrians and vehicle traffic outside the wall must be addressed. Vehicular
traffic have no impact if the sensor cable is mounted at a height at least
3.0 m (10.0 ft) higher than the traffic's highest moving object.
Also,
vehicular traffic is not a problem if the cable is placed (surface or
buried) at a minimum distance equal to two times the height of the vehicle.
Pedestrian
traffic does not cause false alarms if the distance between the pedestrians
and the sensor cable is greater than 3.0 m (10.0 ft).
21) Is the
cable Ultra Violet resistant?
The
RG-11 coaxial sensor and lead-in cables have an Ultra Violet rated jacket.
22)
Are the
cables available in a plenum rated version?
The
detecting cable (RG-11 typ.) and the non-detecting cable (RG-11 typ.)
are standard communication coaxial cables which can be purchased with a plenum rating jacket.
23) Is the
jacket on the cable tough enough to resist rodents?
As
with any outdoor cable, standard precautions should be followed. A popular
practice is to insert the sensor cable into a PVC conduit. The lead-in
cable could be inserted into a metal conduit. In addition, voltage is
applied along the cable which will deter rodents from permanently damaging
the cable.
24) What
happens if there is a hole in the cable?
A
flooding compound is inserted between the copper braid and the jacket
to prevent water to migrating inside the cable which could reduce the
detection performance of the system.
25) Is the
ENCLOSURE™ NEMA rated?
For
applications where the processor is placed outdoors a waterproof NEMA-4
qualified box is used. This allows the processor to be installed outdoor
in or above ground. Typically, the processor is placed inside a building
or on a mounting post adjacent to the protected zone.
26) Will
humidity cycles cause a problem on the electronic components?
As
with any outdoor rated electronic product today, the ENCLOSURE™'s
printed circuit boards (PCB) are coated with a protective silicon layer
to resist to humidity.
27) What
is the recommended burial depth?
The
maximum burial depth of the sensor cable is 5 cm (2.0 inches) for water
saturated soil and 15 cm (6.0 inches) for dry soil. The main processor,
however does not need to be buried for the system to operate.
28) What
test equipment is required?
No
special test equipment neither special tools are needed. Simply a PC or
Laptop computer is required for the first time calibration of the ENCLOSURE™ system. We do recommend our SURENET remote diagnostic software for
larger installations.
29) Since
ENCLOSURE™ uses TV or FM signals, what regulatory approvals are
required before installing the system?
The
ENCLOSURE™ has two modes of operations. One is in "passive" where the sensor cable receives commercial available broadcast FM
signals;
it does not generate any signals. Therefore no special regulatory approval
is required provided the commercial FM signals are strong enough to operate
the system. If the system is too far from commercial FM transmitters and
therefore, cannot receive the FM signals properly, the ENCLOSURE™ must be in "active" mode where the system transmits its own
TV or FM signals. There are some regulations regarding this mode of operation
which several configurations have already been approved by FCC and Industry
Canada. Contact Auratek Security for any further details.
30) Is there
a comprehensive set of application notes?
Yes,
the following set of Application
Notes are available.
Application
Note 1 - ENCLOSURET for Roof Top Applications
[Last Revised: Jan. 2003]
Application
Note 2 - ENCLOSURET for Wall Mount Applications
[Last Revised: Jan. 2003]
Application
Note 3 - ENCLOSURE™ for Fenced Compound Applications
[Last Revised: Jan. 2003]
Application
Note 4 - ENCLOSURET for Surface and Buried Applications
[Last Revised: Jan. 2003]
Application
Note 5 - ENCLOSURET for Fast Deployable Portable Applications
[Last Revised: Jan. 2003]
Application
Note 6 - ENCLOSURET for Raised Cable Applications
[Last Revised: Jan. 2003]
Conceptual
Note 1 - ENCLOSURET for Perimeter Sensor with Intruder Location
Capabilities
[Last Revised: Jan. 2003]
31)
Will gullies and ditches affect detection?
ENCLOSURE™have no problem maintaining continuous detection through gullies and
ditches. Indeed, the terrain following is the key feature of Auratek's
technology. Since grass area are often in combination with gullies and
ditches, Auratek's volumetric technology are more advantageous than
microwave beam because microwave beam continuously causes false alarm when
used over grass area.
32)
Will Auratek's product interferes with nearby radar site?
No
because Auratek's product is FCC and Industry Canada certify as an low RF
power, license free, application. Your concern may be more around the
Radar inferring with Auratek's sensor. On that aspect, you can be at
peace, the radar platform does not cause interference that will affect
full function of the sensor. Here is why.
i) Auratek operates in the broadcast TV VHF band,
that is normally much below Radar band. Otherwise, the Radar will
interfere with the VHF commercial TV band, which is not allow. However, if
the physical location between the Radar transmitter and the Auratek
receiver is very close, say less than 100m from each other, we will insert
additional band-pass-filter in Auratek receiver front-end to be on the
safe side.
ii) Auratek operates on multiple frequencies,
form 2 to 8 frequencies per zone (based on which processor is in used).
This multiple frequencies aspect have allow Auratek to operate in severe
and strong electromagnetic field environment, such as military radar base,
high power electrical substation, telecommunication tower and nuclear
power generator.
33)
Is there an electric field generated between the cables or is it only
around the sensor cable?
Electric
fields are generated around the sensor cables -- both the transmit and the
receive cables.
34)
Should the area between the sensor and the receive cable be absolutely
clear of vegetation?
No,
this is the key feature of our technology. However, caution must be take
when bush trees (of size 1/2 human to human in height) are inside the
detection zone, especially when such bush trees are wet (after rain) and
move on high wind conditions.
ENCLOSURE™
- Acoustic Series
1) Who uses the ENCLOSURE™-Acoustic Series systems?
The
ENCLOSURE™-Acoustic systems
have been installed at hundreds of sites around the world. Users range
from the military security, the diplomatic security, utility market (i.e. nuclear,
water and electrical), correctional facilities to commercial and
residential properties. Applications include fences, walls, ductwork,
ceilings and many others.
2) How do these systems work?
Using
special optics, an optical fiber can be made very sensitive to motion,
vibration or changes in pressure. When the fiber is attached to a
structure, such as a fence, it will be able to detect disturbances caused
by someone attempting to cut or climb the fence. Also, a special
piezo-electric coaxial cable can be used to detect vibration, noise, and
pressure capacity produced to an electrical carrier signal.
3) Must the fiber cable
start and end at the same point?
Yes
and no. For a single zone system the answer is yes since both the laser
light source and the optical detector are included in the Alarm Processing
Unit (APU). The cable is laid out so that it starts at the laser, runs
through the detection area and then returns to the detector. We call this
a "loop-back" installation. For multi-zone systems, the answer
is no. Fiber cable can run from the laser light source of one APU to the
optical detector of the next APU and continue in this fashion down the
line. We call this a "daisy chain" installation.
4) ENCLOSURE™-Acoustic Series sensors are highly resistant to nuisance alarms. Why is this
true?
There
are a number of factors that contribute to the rejection of nuisance
alarms in our systems. First is the fiber cable itself. Optical fiber is
not affected by EMI, RFI or lightning that can cause disturbances in
electrical or radio frequency sensing systems. The cable contains no metal
and will not conduct electricity. The second reason is the sophisticated,
microprocessor-based Alarm Processing Unit (APU). The APU converts the
optical signal from the sensor to an electronic signal and looks at the
intensity, duration and frequency, along with several other factors, to
determine if a signal is the result of an actual intrusion or is from a
nuisance source such as traffic, wind or small animals. Since every
installation is unique, the APU is fully adjustable to give optimal
performance in any situation. Finally, for structures located in very
windy areas, ENCLOSURE™ offers an optional anemometer that feeds
wind speed data into the APU so that adjustments for wind noise can be
made automatically.
5) How many zones does each Acoustic Processor support?
One.
As discussed above, however, you can daisy chain multiple processors
together for larger systems with many zones.
6) Will the system tell me where in a zone an intrusion is
occurring?
No.
It will only tell you that an intrusion is taking place somewhere in the
zone.
7) How large are typical zones?
It varies based on the needs of the user. For high security systems where immediate response is required, typical zones are not much more than 100m
(330 ft). This allows a single camera or guard to respond immediately when an intruder is detected in a zone. For commercial systems may be much larger, up to our system's maximum range of
500m. This is much more economical than shorter zones and is often just as effective when camera coverage is limited or when police or security guards are expected to take several minutes to respond to an alarm.
8) Can ENCLOSURE™-Acoustic Series Alarm Processors be mounted outdoors?
Yes. All Alarm Processors mounted in a NEMA class 4X weatherproof enclosure with a tamper switch.
9) How do I program the Alarm Processing Unit?
AUMA
(EI) sells a hand-held calibrator. Alternatively, you can use a
DOS-based laptop computer with a 9-pin modem cable to do the same thing.
Setup instructions are included in the installation and operation manual. In addition, full remote programming and diagnostics features are
available with the Windows based SURENET software option. SURENET
software also
offers a Graphical User Interface (GUI) with touch screen capability.
10)
Do I need any special tools to install ENCLOSURE™-Acoustic Series systems?
Yes,
there are a few special tools required. To install cable into our split
conduit, use the insertion tool. To install fiber-optic
connectors, you need to use installation tools from the connector
manufacturer. (Auratek uses connectors made by AMP and also offers
an AMP installation tool kit.) Finally, to program the processor, you will
need either our hand-held calibrator or a lap-top computer.
11)
What are the power requirements for the ENCLOSURE™-Acoustic Series systems?
Alarm
Processors require 12 or 24 VDC power. Each APU draws less than 250 mA at
12 VDC during continuous operation but can spike as high as 2 A at 12 VDC
for a very brief time during start-up.
12) ENCLOSURE™-Acoustic Series sensors are highly resistant to nuisance alarms. Why is this
true?
The Alarm Processor provides normally open and normally closed dry contacts for alarm or tamper signals. These can feed into a larger system using copper wiring or a radio link. Optionally, you can use the
SURENET from Auratek to bring alarm information from many zones back to a central point using optical fiber. The
SURENET will provide relay contacts corresponding to each zone for alarm panels or an RS-232 output for computerized head-end systems.
13) Is special coaxial sensor cable required?
Yes.
The coaxial sensor cable is made to detect vibrations and is used in a few
markets. (i.e.: intrusion, traffic, submarine, etc).
14) Is special fiber-optic-sensor cable required?
The fiber-optic-sensor
cable is a standard design in the telecommunications industry. The cable, however, is much more rugged than standard cable since it is often placed in hostile environments and must survive for years with little or no maintenance.
15) Are special fiber-optic connectors required?
No. Standard ST bayonet connectors are all that is required. These connectors are commonly used for telephone and CCTV systems. We do suggest that you use connectors with ceramic ferrules in order to assure consistent performance over temperature.
16) How do I install the system on a fence?
Slide the coaxial or fiber cable into our flexible-split-UV-resistant-PVC
conduit or stainless steel conduit
and attach to the fence fabric with cable ties. Only the coaxial sensor cable can be attached
directly to a chain link fence fabric.
17) What about gates?
For swinging gates, the flexible conduit can run out on the gate and then loop back to the hinge area so that it will swing with the gate. You can continue the run without a break by burying the cable in rigid conduit about 18 inches below the gate and coming up on the other side. (The installation manual gives more details and illustrations.) Sliding gates are more difficult. They can be covered with our system if cable is attached to the slide or support rail that the gate rests on. Movement of the gate will be transmitted to the rail and therefore can be sensed. Some trial and error is required to determine the right amount of fiber to make the gate sensitivity similar to the rest of the fence. For complicated or difficult gates, we recommend that you bypass them and use a small beam or other device to protect them.
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