Appendix I:
PIR Detection Zone
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Appendix I: PIR Detection Zone
The figure4 shows the detection range in different detection angles. When the detection
angle is 35°,the detection range is 50ft. When the detection angle is 52°,the detection range is
30ft.
Figure 4
The PIR detection angle (α) is just barely larger than the field of view angle(β). The
advantage of this design is to avoid empty pictures and get available pictures.
Figure 5
SG550M-8M has a new design of PIR and this new PIR is patented
. The new patented PIR’s
detection range is ultra-long. The figure 6 shows the compared detection zone between normal
PIR and the new patented PIR.
