What type of sensor is most effective for detecting ground vibrations from large vehicles?

Pressure pads are highly effective for detecting ground vibrations from large vehicles because they operate by detecting changes in pressure on a surface. When a heavy vehicle passes over a pressure pad, it exerts significant weight that causes an immediate and detectable compression of the pad. This change is then measured and can trigger alerts or notifications to nearby monitoring systems.

Pressure pads are specifically designed for ground-level monitoring, making them ideally suited for tracking the movement of vehicles. They provide a reliable means of detecting vehicle passage in real-time, which can be critical for security and monitoring purposes on borders or in secured areas.

In contrast, other sensor types may not be as effective in this specific application. Magnetic Vehicle Detection Sensors, while useful for detecting the presence of vehicles through magnetic field changes, may not respond as effectively to ground vibrations. Seismic Point Sensors are typically aimed at detecting seismic activity rather than vehicle movement, and Infra-Red Devices are designed for detecting heat signatures, which may not be directly related to ground vibrations. Thus, pressure pads stand out as the most appropriate choice for this scenario.