Calculator
Chapter 9 · Underground/Enclosed-Space Security Surveillance System Design Guide
This chapter provides five interactive engineering calculators for underground security surveillance system design. All calculators update results in real time as you adjust inputs. Results include visual indicators and charts to help you quickly identify whether your design meets the required specifications.
9.1 Video Bandwidth Calculator
Video Bandwidth & Storage Calculator
Calculate total network bandwidth and daily storage for your camera deployment
20
Bitrate: ~2 Mbps each
10
Bitrate: ~1 Mbps each
5
Bitrate: ~4 Mbps each
30
Days of continuous recording
Total Cameras
35
cameras
Peak Bandwidth
58
Mbps
Storage Required
18.9
TB
9.2 PoE Power Budget Calculator
PoE Switch Power Budget Calculator
Verify that your PoE switch budget covers all connected devices with required margin
16
2
4
Total PoE Load
-
Watts
Switch Budget
370
Watts
Utilization
-
%
Remaining Headroom
-
Watts
9.3 Storage Capacity Calculator
Video Storage Capacity Calculator
Calculate RAID-protected storage requirements with hot spare and RAID overhead
50
2.0
30
Raw Storage Needed
-
TB
Drives Required
-
HDDs (incl. spare)
RAID Mode
RAID5
selected
9.4 UPS Runtime Calculator
UPS Runtime & Sizing Calculator
Calculate required UPS capacity and expected runtime for your field zone
250
60
30
120
Total Load
-
Watts
Min. UPS Capacity (VA)
-
VA (at PF 0.9)
Battery Capacity Needed
-
Ah @ 12V
Recommended UPS Model
-
online double-conversion
9.5 Camera Coverage & Count Calculator
Camera Coverage Area & Count Calculator
Calculate required camera count for a zone based on coverage area and lens angle
100
12
3.5
20
Recommended: 15–25% for continuous coverage
Zone Area
-
m²
Cameras Required
-
cameras
Coverage per Camera
-
m²