Intrusion Detection Systems use sensors that detect an unauthorized entry into the protected area, sending a signal to the control unit which implements various countermeasures to respond to the violation of the property, such as sound alarms, messages to the police or to the surveillance, and calls to preset phone numbers.
Even if it is the control unit that carries out the actual intrusion detection action, without the sensors it would not be able to identify the threat: it is its eyes and ears, and without it it would be blind and deaf.
How do the sensors work? They are devices capable of detecting physical alterations within their range of action.
The nature of these ‘physical alterations’ depends on the type of sensor installed, as there are different varieties that use different technologies and mechanisms.
The main detection systems use infrared or microwave.
Infrared is a beam of light invisible to the human eye that is used with two different application methods:
- active detectors use a transmitter and a receiver, and are triggered when something or someone gets in the way, crossing the invisible infrared barrier;
- passive detectors consist of a single element that allows you to detect the temperature change within the monitored area.
Microwaves are high-frequency electromagnetic waves that can be generated by a transmitter that sends them to a receiver, using the same principle as active infrared systems.
Mixed sensors are also available on the market. They integrate both technologies to increase the degree of safety and avoid false alarms, by crossing both infrared and microwave detections.
E.co.system offers Hesa intrusion detection solutions for both indoor and outdoor use with perimeter protection, new laser and microwave technologies, which allow coverage of up to 60 meters with a single device.
The anti-intrusion system can be integrated with home automation to control it remotely, set the tolerance margins to avoid false alarms and automatically activate-deactivate it within specific sequences of programmed actions.