Detector with anti-cloak technology

July 2003 Perimeter Security, Alarms & Intruder Detection

It has been acknowledged in the security industry that it is possible for an intruder to sufficiently mask himself from the installed motion detector, using camouflage techniques, so that the detector does not identify him as a burglar because it does not detect his infrared radiation.

According to Sesco Security, local distributors of Rokonet products, even when using sophisticated dual technology detectors with both PIR and microwave sensors, there have been many instances when the detectors involved in burglaries do not make a detection. This occurs when the detector is not sensitive enough or intruders have been able to sufficiently mask themselves to avoid detection.

In order to address this issue, Rokonet has developed a new, patented technology called ACT (anti-cloak technology) that has been incorporated into the iWISE Dual Technology motion detector. ACT is a technology breakthrough exclusive to the iWISE detector series.

The technology has been designed specifically for commercial, industrial and institutional installations and is also suitable for up-market residential applications.

ACT will cope with any attempt by a burglar using camouflage techniques to conceal his IR radiation by utilising unique pattern-recognition algorithms within the microprocessor and automatically switch the detector to trigger alarms based on detection from the microwave channel for a predetermined time only.

The method used for identifying a cloaking attempt and making the decision to switch to microwave single channel triggering is described as follows:

A moving, cloaked intruder emits a very weak infrared signal that has a characteristic shape and frequency. ACT uses unique pattern recognition algorithms in the microprocessor that disregard the signal strength and concentrate on the shape and frequency of the signal. After verifying that the pattern of the signal matches that of an intruder and that microwave detection is also present, ACT switches to microwave triggering of alarms for a predetermined period.

The iWISE consists of a powerful microcontroller with advanced digital processing. This enables the innovative pattern recognition algorithms and the quality performance of the iWISE.

Some installations have inherent severe thermal interference or motion sources. Environments that may have hot spots, air drifts, moving objects with high temperatures, or simply described as harsh environments, require a QUAD PIR sensor. In these cases the iWISE DT QUAD is the preferred solution.

The innovative anti-cloak technology enables customers to benefit from both capabilities: dual technology's immunity to false alarms, together with the higher detection ability of the microwave channel.

Benefits of the iWISE DT series include:

* iWISE DT and iWISE DT Quad available.

* 15 m range.

* Flexible mounting height from 2,1 to 3 m.

* Wall/corner or ceiling mount swivel (optional).

* Wall mount swivel with back tamper for high level of security.

* Separate LEDs for better understanding the channels performance while performing a walk test.

For more information contact Douglas Luscombe, Sesco Security, 031 303 4022.

Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Video and audio convergence
Issue 1 2020, Hikvision South Africa , Perimeter Security, Alarms & Intruder Detection
Hikvision has introduced its video and audio convergence solution to the market, featuring an innovative real-time intrusion deterrent feature.

Securing perimeters of secure locations
November 2019, Axis Communications SA, Modular Communications, Hikvision South Africa, Nemtek Electric Fencing Products, Technews Publishing, Stafix , Government and Parastatal (Industry), Perimeter Security, Alarms & Intruder Detection, Integrated Solutions
Hi-Tech Security Solutions asked a number of companies offering perimeter security solutions for their insights into protecting the boundaries of national key points.

Utility outages: Are you looking at the big picture?
October 2019 , Perimeter Security, Alarms & Intruder Detection
We have to start thinking about, and laying plans for, the real possibility that the whole grid is somehow compromised.

Perimeter protection in Ghana
October 2019, AcoustAlert , Mining (Industry), Perimeter Security, Alarms & Intruder Detection
A gold mine in Ghana has erected a dual fence with AcoustAlert PIDS fence detection on both inner and outer fence lines.

A committed service provider
October 2019, Elf Rentals - Electronic Security Solutions , Perimeter Security, Alarms & Intruder Detection, Residential Estate (Industry)
The theme Elf promoted through its sponsorship was that it offers clients its own financial commitment and willingness to accept the risk of equipment failure.

Thermal cameras with artificial intelligence
October 2019, Dahua Technology South Africa , Perimeter Security, Alarms & Intruder Detection, CCTV, Surveillance & Remote Monitoring, Residential Estate (Industry)
Dahua Technology showcased solutions that are important to residential estates, namely perimeter protection.

Securing estate perimeters
October 2019, Nemtek Electric Fencing Products , Perimeter Security, Alarms & Intruder Detection, Residential Estate (Industry)
Nemtek has a range of products designed to secure the perimeters of estates, however its display at the conference focused on its Network Energizer and its Dual-Action Tension Sensor.

Using home security to provide home automation
October 2019, TPA Security Distributors , Perimeter Security, Alarms & Intruder Detection, Products
Making outdoor intrusion detection sensors an integral part of the security/home automation system is a reality with Texecom Connect and Ricochet technology.

Not just intruder detection systems
October 2019, Elvey Security Technologies , Perimeter Security, Alarms & Intruder Detection, Products
The market is clamouring for the integration of traditional intruder detection systems with home automation, surveillance and access control solutions.

Perimeter security in high EMF environments
October 2019, AcoustAlert , Perimeter Security, Alarms & Intruder Detection
Testing AcoustAlert PIDS on extra high tension sites like power stations and power generating gas turbine plants.