How The Radar Works And How It Is Installed; Vertical Mounting Mode; Tilt Mounting Mode - SeeedStudio Fall Detection Module Pro User Manual

c. Motion detection functions
a) Motion triggering
b) Motion direction and position sensing

5. How the radar works and how it is installed

5.1. vertical mounting mode

The radar is mounted on the roof and is directed vertically downwards.
The radar is installed at a height of H = 2.4 m to 3 m; the radius of the radar
beam coverage area is R. Within the radar projection area, the projection
area is considered to be further divided into a fall detection area, a presence
detection area and a motion-triggered detection area, which is shown in the
diagram below.
(a) Radar projection schematic

5.2. Tilt mounting mode

Some applications require the radar to be mounted at an angle, e.g. in the
corner of a wall.
(b) Schematic diagram of beam splitting