What intrusion detection system establishes an electrostatic field around an object to be protected?

The capacitance detection system is designed to establish an electrostatic field around the object it is intended to protect. This type of system works by monitoring changes in the electrostatic field that surrounds a designated area. When an intruder disrupts this field, the system detects the disturbance and subsequently triggers an alarm or alert.

This detection method is particularly effective in environments where there may be frequent movement, as it can distinguish between authorized movement and unauthorized intrusion based on changes in the capacitance levels. Additionally, capacitance detection systems can be utilized in various applications, including perimeter security and monitoring access to sensitive spaces.

In contrast, the ultrasonic detection system operates by emitting and measuring sound waves; the contact microphone detection system relies on vibration detection; and the microwave detection system utilizes microwave signals to detect movement. Each of these methods has its unique principles and applications and does not create an electrostatic field like the capacitance detection system.