One commonly heard complaint about AI-based camera analytics is that it generates an excessive number of unfounded events. Knowing that some SOCs charge for every false alarm, dual-tech motion detectors (PIR and Microwave) can be enticing.
While both technologies have their pros and cons, which one comes out on top when it comes to outdoor perimeter protection? Does today’s advanced camera analytics surpass PIR & Microwave sensors? Are there cases in which one is better suited than the other?
Keep reading to find out…
PIR and Microwave Motion Detectors
PIR, or Passive Infra-Red, sensors are made of grids of heat-detecting sensors. When sensors on the same device detect heat, one after the other, it interprets it as a moving body. The connected light is then triggered.
Microwave sensors, as opposed to PIR, are active devices. They send out microwave pulses and analyze the reflected pulses. By comparing reflected pulses, they detect motion and trigger the connected light.
*It is important to note that only a combination of PIR and Microwave motion detectors is efficient and reliable for outdoor perimeter protection. Using only one of those two technologies would result in an excessive number of unfounded events.
AI-Based Camera Analytics
Nowadays, computers have learned to perform visual tasks. They can identify objects and people in videos with cameras acting as their eyes. When a pertinent movement is perceived, an event is triggered.
How do computers learn to recognize objects? This Ted talk will please the geeks out there.
For organizations with low-value goods and where theft is unlikely to occur, dual-tech motion detectors (PIR & Microwave) can be an acceptable option. However, after a certain time, detectors can stop working spontaneously. Organizations become at risk for theft and vandalism as there is no way to know about malfunctions or anomalies remotely.
If your business has a large perimeter to protect and theft is very likely, the use of camera analytics is recommended.
How can we cut down on the number of false events when we use advanced camera analytics so security operators can focus on real threats?
Day-to-day analysis of false events should be run for each protected site by SOC operators. Daily reports, including a list of inefficient devices and solutions to fix them, should then be shared with the client.
Sirix goes above and beyond to make sure that camera analytics works well. Every day, Sirix sends the integrator a list of problems and solutions to help reduce false alarms.
Reach one of our experts to chat about your methods and how we can perhaps help.