PIDS Sensor Fence | Perimeter Security Fence
PIDS fence installed at POSCO
|The importance of automatic security systems for public facilities, military bases and even VIP residences has long been recognized. PIDS Sensor Fence is ideal for any facility that strives to improve perimeter security by providing round the clock monitoring for the protection of lives and property.
Securenics’ Perimeter Security Fence system works by sensing any change in electric charge on the sensor fence caused by an intruder through friction. It causes almost no false alarms and detects intrusions with a probability of near 100%. In addition to detections, it also senses electric pulse signals from intruders when they use electric tools such as welding machines or generators within a short distance from the sensor fence.
PIDS Sensor Fence detects climbing a fence and a corner of the sensor fence as well as climbing up ladders and underground digging. Unlike other sensor fences, it requires few installers and does not require additional electric infrastructure like anti-lightning or grounding. It can be deployed onto any barrier such as a vinyl fence, a chain link fence or even a concrete wall.
New Standard in Perimeter Security Fence Systems
- Perfect intrusion detection
- Fence sensor: Reacts on 6-20 kg forced impact on the fence
- Buried sensor: Senses over 40 kg of impact by digging or jumping
- Free from RFI / EMI / EMC interference
- Attaches to any barrier (Vinyl, Concrete, Metal) and on any terrain (flat, hilly)
Low Nuisance and False Alarm Rate from Electric Charge Sensor Fence
- Very low false and nuisance alarms
- No influence from extreme temperatures, fog, rain, storms, snow, lightning, small animals
- Sensors do not generate any electric signal or electromagnetic fields
- Differentiates intrusions due to artificial circumstances such as electronic tools, radars, tanks, welding machines, airplanes, big trucks and other equipment.
Cost Effectiveness of the PIDS Sensor Fence
- Requires minimum number of installers compared to other sensor fences (10 men/day per 1 km)
- No additional infrastructure such as power supplies and anti lightning work required
- No need for extra installation equipment. Standard electric tools
- Complete surge and anti-lightning protection
- Rugged outdoor cabinet and individual controller case
- 8 year warranty on fence sensors and cables
The PIDSFence works on friction electromotive forces received from the passive sensor cable and the cable connection points (points where the passive sensor cable is fastened to the fence). These signals are detected by the PIDSFence controller.
- Passive Electric Charge Sensor Cable (PECSC)
The PECSC is mounted on the fence and generates an electrical signal in response to unauthorized activity on the fence.
The sensor length depends on the length of the guarded zone, the fence height, the number of supports, and the layout of the PECSC on the fence.
- Coaxial Cable (CC)
Shielded coaxial cable connects the cable adapter and the ASU-35p. Maximum length is 5 km.
- Cable Adapter (CA) and Branch Sleeve (BS)
The coaxial cable connects the PECSC and the coaxial cable. For gates and wickets, use an extended adapter to permit a spiral wrap hose for the coaxial cable protection.
The branch sleeve is used when connecting two separate portions of the PECSC and for shielding and sealing connection points.
The cable adapter and branch sleeve are equipped with cable ties for fastening to the fence.
- Terminal Device (TD)
The terminal device provides continuous monitoring of the PECSC and the ASU-035p with coaxial cable integrity. It is also the shielded and sealed endpoint of the PECSC.
PIDS Fence Detection
Microscopic change on electric charge by friction electromotive force in the passive sensor cable and fence
PIDSFence/False Alarm Resistant
PIDSFence is designed for 24-hour operation in all types of weather and conditions. It is built to resist false alarms caused by outdoor elements.
|Possible False Triggers
||Resistant Up To
|Airplane and helicopter
||Altitute over 100 m
|Blizzards and sand-storms
||For the fence conditions
|Driving of wheeled, full-track and electric-battery vehicle
||Distance to 1.5 m
||5 kg/m2/s density, 36 km/h wind speed
||0.3 m depth
|Frost and ice-up
||2 mm thickness, 36 km/h wind speed
|Ground condition – Max. sub-grade slope for the fence
|Ground condition – terrain irregularities along the fence axis
||± 0.3 m
||Up to 98% at a temperature of +35°C
|Influence of birds and small animals
||Up to 20 kg impact
|Operation of electrical welding machine, electric motor, etc
||Distance to 15 m
|Power lines (up to 500kV)
||Distance to 5 m
|Rain, Dew, Fog, Sea fog, glass
||-40 – +50°C
|Ultra-violet solar radiation, Acoustic noise, Radar electric magnetic field, Ultra-short pulses of the electromagnetic field, Momentum neutron flux
PIDS Sensor Fence Features:
- The ASU-35p is powered by an uninterrupted DC power source with supply voltages from 8-35 V.
- If voltage drops below 5 V, the ASU-35p goes into Alarm mode.
- Minimum length of the passive electric charge sensor cable is 1.2 m.
- Maximum length of the passive electric charge sensor cable is 500 m.
- Maximum length of the detection zone depends on fence type and the sensor cable layout. If the sensor cable length is 500 m, detection zone is 166-500 m.
- Size of detection area depends on fence type and sensor cable layout.Detection Area by Fence Type and Cable Layout
||Sensor cable layout
||Detection zone length
||Detection zone area
|Typical fences (2.5-2.7 m high)
|Frame with metal fence
|Barbed wire (2.5 m high)
|Auxiliary fence (up to 90 cm high)
- ASU-35p ensures a detection zone with any number of fence turns provided the turn angle is at least 90°.
- ASU-35p is an analog sensing device based on the electric charge signal transfer.
- The duration of alarm signal is 2-second minimum.
- Depending on the ASU-35p information density, three states of the output stub are possible:“Safe” - the resistance of the output circuit is less than 20 Ω
“Alarm” – the resistance of the output circuit exceeds 200 KΩ
“Fault” - the resistance of the output circuit varies periodically from being less than 20 Ω to exceeding 200 KΩ
- The ASU-35p operates a maximum current load of 30 mA in the output stub circuit and a maximum voltage of 60 V
- The ASU-35p allows remote monitoring. When a pulse with an amplitude of 8-35 V and a duration in excess of 200 ms is applied to the remote monitoring input, the ASU-35p goes into Alarm mode.
- The ASU-35p withstands a supply voltage failure within 200 ms. The consumption current from the DC power source with a tuning LED switched-off does not exceed 1.5 mA.
- The consumption from the DC power source with the LED turned on does not exceed 3.5 mA.
- Specific power consumption is 12-45 mW.
- The ASU-35p meets the standard EMC requirements
- Resistant to high-energy microsecond and nanosecond pulse noise.
- Resistant to RF electromagnetic fields.
- Resistant to electrostatic discharges.
- It is not susceptible to manmade electromagnetic radio-interference over the power supply and input-output ports (in excess of the normal values set for the equipment connected to the low-voltage DC distribution network to be used in industrial areas).
- It is not susceptible to manmade radiated radio-interference (in excess of the normal values set for the equipment to be used in industrial and residential areas).
- The probability of unauthorized action detection rete is 98% with a confidence coefficient of 0.9.
- Time between false alarms is 100 days with a confidence coefficient of 0.9.
- Mean time between failures in standby mode is 60,000 hours. In operation mode mean time is 26,000 hours with a confidence coefficient of 0.9.
- PLC (Programmable Logic Controller) features include:
- Data acquisition and communication between ASU and security server with high speed Ethernet switch.
- Tested and selected by Securenics Inc.
- Manufacturer: LS Industrial Systems
- Model : XGB
Available Fence Types
To ensure proper detection, high noise immunity (no false alarms and lowest-possible nuisance alarms) and sabotage resistance, the following guidelines should be followed:
- Prisons / Correctional Facilities
- Ensure proper fence mounting: flexible fences should be stretched uniformly with fence-specific tension force.
- Combine different types of layout and fastening methods.
- Ensure fence uniformity: the fence should be made of a uniform material because different-material sections, when subjected to an unauthorized action, will generate signals of different strength.
- Proper tightness of PECSC upon installation.
- Set the ASU sensitivity setting to the specified detectability
PIDS Sensor Fence Applications:
- Prisons / Correctional Facilities
- US Military
- Public Water Treatment Facilities
- Hazardous Waste Sites
- Nuclear Sites
- Oil and Gas production facilities
- Storage areas
- Business parks