Perimeter Intrusion Detection System (PIDS) is an outdoor security system equipment that incorporates integrated hardware elements, both electronic and mechanical combined with software applications to protect facilities/infrastructure as the first line of defense against attacks, sabotage, theft of property, or threats to personnel by deterring and detecting intruder activity on the fence by utilizing sensors in the area to be detected.

Perimeter intrusion detection systems (PIDS) provide a high level of security ranging from early warning of attacks to detection and verification of alarms without intruders knowing that a tight security network is in place.

The infrastructure such as refineries, mines, factories, solar parks, petrochemicals, and Oil & Gas plants, usually require expensive investments and large areas with multiple access points for intruders. Moreover, if the infrastructure is categorized as critical infrastructure, this will usually become a concern of the government because it relates to national security. After all, there is the potential for acts of terrorism to target these facilities.

Precautions need to be taken to secure the facility, by installing security equipment which is required to be sophisticated and complex because of the area they have. The security system is one of the solutions offered by Mechasolusindo International, PT., (MSI), one of which is the Perimeter Intrusion Detection System (PIDS).

Several manufacturers offer different types of Perimeter Intruder Detection Systems (PIDS), including;

• The Infrared perimeter intrusion detection system is one of the through-perimeter/fence intrusion detection systems. Each Infrared sensor is installed in pairs, consisting of transmitters and receivers which are mounted facing each other, the area between the transmitter and receiver is an area protected by an invisible IR sensor. The IR transmitter emits some Infrared light to the receiver, which is the working principle of the IR sensor. If an intruder passes through the sensor area of the transmitter and receiver, it will cause the IR light to break between the transmitter and receiver, triggering an alarm.
• A Fiber optic intrusion detection system, also known as a fiber optic perimeter intrusion detection system, this system detects motion, vibration, disturbance, etc, occurring in the fence which can be detected by optical fiber. If that happens, the fiber optic perimeter intrusion detection system will send an alarm. Fiber optic perimeter intrusion detection system is free from interference, be it a motor, power line, radio, electrostatic, lightning strike, etc.
• Ground Radar Perimeter Detection System, The basic principle of operation of a radar system involves the transmission of a high-frequency electromagnetic signal towards the expected target location, the results of measurements of emitted and reflected radiation are compared.
• Microwave sensors, also known as RF or Doppler sensors, perimeter microwave sensors generate an electromagnetic (RF) field between the transmitter and receiver, creating an invisible volumetric detection zone capable of detecting people walking, running, or crawling. When an intruder enters the detection zone, changes to the fields are registered and an alarm sounds.
• Buried cable detection systems provide volumetric (RF-based) detection of walking, running, or creeping intruders.
• Video analytic detection system, Video analysis is used for the prevention and detection of intruders on the perimeter with remote monitoring that uses algorithms in video images that aim to identify certain objects or actions in the video as a basis for taking further action so that it can help performance and level of the security system. Video analysis will provide alerts to monitoring stations that receive causal images that are visually displayed to verify, analyze and respond to each alarm that occurs. Video analytics also can identify potential perpetrators earlier by detecting unusual behavior or the presence of the same individual in areas where visitors are not normally present and using basic biometric attributes – height, clothing color, etc., or in the case of a vehicle, type, and color – surveillance systems can re-identify individuals and track movement through multiple camera views.