In a PIR sensor, what is the processing method called that verifies alarm signals by duration or repetition?

The correct term for the processing method that verifies alarm signals by analyzing their duration or repetition is referred to as event verification. This process ensures that alarms are genuine by evaluating the characteristics of the detected signal over a specified time frame or by observing whether similar signals occur repeatedly within a short period.

In an intrusion detection context, it's crucial to minimize false alarms, which can occur due to transient events or environmental changes. Event verification combines temporal analysis with additional criteria to delineate legitimate threats from non-threatening signals, enhancing the reliability of the sensor system.

The concept of event verification is fundamental in distinguishing between actual security threats and benign occurrences, thus improving the overall performance of the intrusion detection system. By utilizing this method, security personnel can respond appropriately to verified threats while reducing unnecessary actions caused by false alarms.