Seeed MR24HPB1, Руководство пользователя

Страница: 11 / 19

MR24HPB1
11
e. Early warning design function.
5. Works and Patterns
5.1. Installation Method
There are three recommended installation methods for radar modules: horizontal,
inclined, and overhead.
5.1.1. Horizontal Mounting
Figure 4 shows the horizontal installation method. The method is primarily used to detect
the presence of the human body in a standing or sitting position, such as in a living room,
home appliance applications, and other situations.
The recommended installation height for the radar is between 1 and 1.5 meters. The
radar should be installed horizontally and forward, with an inclination of
≤±
50. There
should be no obvious interfering objects or covering in front of the radar.
To ensure that the main beam of the radar antenna covers the detection area and the
radar beam covers the human activity area, the normal direction of the radar is aligned
with the main detection position.
The maximum detection range of moving human bodies is L3
≤
12m; The maximum
distance of detection for seated or inching humans is L2
≤
5m; The maximum distance
of detection of sleeping humans is L1
≤
2.5m;
The maximum effective range will be affected by deviations from the normal direction of
the radar. The millimeter-wave band electromagnetic field has certain penetration
characteristics for non-metallic materials and can penetrate common glass, wood,
screen and thin partition walls, as well as detect moving objects behind the shelter;
however, a thick bearing wall and a metal door cannot be penetrated.