We were recently asked for a perimeter alarm system for long range motion detection. Here we share a case study of the project involved and how we provided the solution with Microguard™ sensors.
Perimeter Alarm System Requirements & Solution
The site in question had a zone length of 450 metres (1,500ft). Initially, the customer had thought they were looking for just a single microwave detection sensor unit with a long range capacity that could cover the entire 450m (1,500ft). However, we argued the case for a different and what we believe to be a much more effective approach.
As manufacturers of our own security systems we always look to design and produce the most effective and reliable solution. When it comes to microwave sensors, whilst it is possible to produce a singe microwave beam generator unit that will cover a distance of 450 metres (1,500ft), it does not mean that this is the best solution. With a single unit covering such a large zone length, if the alarm is triggered then you have a very large area to search and accuracy of detection comes into question.
How to use a microwave perimeter alarm for long range motion detection
If you install multiple microwave beam generator units with a shorter zone length detection range, then it is far easier to pinpoint a perimeter breach accurately. Another problem with long zone lengths is that the beam used for detection can be quite wide because it spreads with the more distance it has to travel. Microguard™ intrusion detection sensors have been specifically designed with a zone length monitoring capacity of 200m (656ft) maximum. This means that for larger zone lengths we can recommend the installation of a Microguard™ unit every 200m (656ft). With the overall area split into smaller monitoring zones, Microguard™ offers a great solution as a long range perimeter alarm system.
Outdoor Performance Detection Stability
Some sites that require long range perimeter detection are in remote locations and often where the climate can be harsh. Microguard™ has been designed with this in mind and can be installed with confidence in the harshest of outdoor environments. Using a Dielectric Resonator Oscillator (DRO) with MIC technology, it is possible to achieve ultra high detection stability in all weather conditions. Click here for more technical information on our microwave sensor detection system (pdf).