PERIMETER INTRUSION DETECTION SYSTEM (PIDS):
Perimeter intrusion detection system is designed to ensure the detection of, and assist in the apprehension of intruders. An intruder’s best opportunities arise when the school premises or building is unoccupied – at night, at weekends and during holidays. At these times of greatest vulnerability, electronic security measures must come into play.
BjFire Systems Ltd is offering an intrusion Detection System manufactured by SENSTAR. SENSTAR is a leading specialist in protecting buildings against intrusion. The system is fully automated to detect intrusion early and to raise both audio and visual alarms and at the same time reveal the zone of intrusion within the secured premises or building and it is easy to set up and maintain.
Design Overview
PIDS Architecture
PIDS is a complex commingling of multiple systems that provides advanced warning and threat assessment within a secure perimeter. Through a correlation of multiple alarms and detected threat contacts, the Command and Control Centre operator can quickly identify “targets of interest” and dispatch the appropriate response to neutralize the threat.
PIDS architectures include four basic elements:
- Sensors
- Video Detection Equipment
- Threat assessment and Alarm Correlation/Management Systems
- Data Communications Systems
The following sensors are typically used within the PIDS infrastructure:
Barrier Sensors
Barrier sensors are a two-in-one security option. They provide both a physical barrier to intrusion and a sensor for detection. Taut-wire systems are an example of barrier sensors.
Volumetric Sensors
Volumetric sensors generate an invisible detection field that locates and tracks intruders moving through the secure zone. These sensors include microwave systems, RADAR, and electrostatic detection devices.
Fence Mounted Sensors
Fence and wall-associated sensors are above-ground detection sensors that are attached to an existing fence or wall. In the event that vibration due to cutting or climbing on a metal fabric fence is detected, the detection field is considered compromised and an alarm triggered.
Video Camera Detection
Video motion detection systems transform the viewing-only ability of CCTV cameras into a tracking and alarm system. Using advanced software to analyze the video output signal, a detection field is created that can locate and track possible threats within the camera’s perimeter zone. Moving targets, such as intruders and vehicles, speed and direction can be tracked and logged while anomalous static targets, such as a briefcase or package left by an intruder can be flagged as a threat and the appropriate alarm sent to the operator. Video monitoring also provides PIDS with traditional long-term storage of video for the use of reactive threat analysis.
Alarm Management Systems
The Command and Control Systems software continually monitors perimeter detection instrumentation and notifies console operators if any unauthorized change of system state occurs. Intrusion typically triggers multiple sensors such as fence sensors, barrier grid sensors, radar perimeter zones, and video motion detection fields. These alarms are correlated and displayed in a simple manner so that rapid threat assessment can be made and the appropriate action taken.
Data Communications Systems
The Data Communication infrastructure for PIDS provides connectivity between field-installed instrumentation such as sensors and video cameras, Command and Control file-servers, and operator consoles. This infrastructure is critical to the PIDS operation and reliability and typically is designed with 99.999% reliability goal. The entire PIDS system must meet or exceed 99.9% reliability.
The networks are usually designed with complete 1+1 redundancy for all Command and Control Center hub elements including operator consoles, file and video servers, core data transport elements, and local LAN switching elements.
A fully operational redundant Command and Control Center hub is deployed in an alternate location providing complete Command and Control Center element redundancy.
The network infrastructure must be able to react to link and node failure events within sub-50 ms and to any failure scenarios that will force the alternate Command and Control Center Hub to activate within three seconds. The PIDS Data Communication networks require application awareness and strict quality
of service. It is essential that all sensor data has guaranteed delivery and minimal network transit delay so that information from multiple sensors can be correlated properly.
Scope of Proposal
- Design an Intrusion Detection system with high reliability and no possibility of false alarm at minimal cost.
- Design an Intrusion Detection system which is flexible, easy to operate and absolutely protecting the required areas.
- Ensure that the Intrusion Detection system has facility for user control and easy maintenance.
Key benefits of Proposed Solution
- System Integrity
- Investment Protection
- Reduced Operational cost
- Improved Employee Productivity
Design Considerations
This proposal takes into cognizance the following factors:
- The Clients Requirements
- Budget and Cost implications
- Degree of security and alarm management required
- Future expansion potential
- Flexibility required
- The Characteristics of the site
- The nature of the business
- Physical and Environmental peculiarities of site
- Aesthetics
