DSD (construction site safety ELV)
渠務署(Drainage Services Department, HKSAR)
End-to-end ELV design and system integration for DSD, combining smart site safety, IoT sensing, wearables, and AI supervision to protect workers in underground drainage and confined spaces.
Case overview

New Forward Technology designed and delivered a complete ELV solution for the Drainage Services Department (DSD), targeting the high-risk environment of underground drainage and confined-space work by integrating surveillance, access control, intercom, and IoT subsystems on a single platform. The SSSS smart site-safety platform provides hazard-zone control, digital work permits, and real-time alerts; AI helmet detection and high-visibility vest recognition keep workers PPE-compliant; and smart helmets and smart wristbands monitor heart rate and body temperature inside confined spaces in real time.
To solve the cabling and power challenges of underground and outdoor environments, New Forward backhauls sensor data over a BLN wireless IoT platform, cutting the cost of underground cabling, and provides custom solar power and 4G connectivity for outdoor monitoring points with no mains supply. Every subsystem is centrally managed, with events that are traceable and auditable, comprehensively safeguarding the personal safety of workers in underground and confined spaces.
Project highlights
- ELV design and multi-subsystem integration (CCTV, access, intercom, IoT)
- SSSS smart site platform: hazard zones, digital permits, live alerts
- AI helmet & high-vis detection for PPE compliance
- Smart helmet & wristband: heart rate and temperature in confined spaces
- BLN wireless IoT: sensor backhaul with reduced underground cabling
- Custom solar + 4G supply: power and connectivity for off-grid outdoor cameras
- Centralised multi-system management with auditable events
FAQ
How do you protect workers operating in underground drains and confined spaces?
How do you handle monitoring points outdoors or underground with no mains power and difficult cabling?
Ready to upgrade your security systems?
Contact our team for a free needs assessment and a tailored proposal.