Smart Campuses & Dormitories

Three unavoidable issues in older buildings

WHAT GOES WRONG TODAY

Adding a switch means chasing walls

Two-way control at the door and bedside is the most useful setup, but chasing walls in older buildings is costly and work must avoid occupied hours.

Many water points, leaks found late

Showers, washrooms and roof shafts are scattered, so manual patrols rarely catch a leak early.

Public areas stay lit and energy use cannot be assessed per building

Corridor, stair and outdoor court lighting runs on fixed timers; only a total meter is available, so savings cannot be demonstrated.

Three-layer architecture: sensing → gateway → platform

SYSTEM ARCHITECTURE

Three-layer architecture: battery-free sensing, EnOcean gateways, the unified IoT platform, PC console, device app and business mini-program

Sensing layer · battery-free

Self-powered switches, door/window contacts, water leak, mmWave presence and temperature & humidity, powered by a press or indoor light

Network layer · multi-protocol

EnOcean 868 MHz as standard, with optional Bluetooth dimming, DALI and 4G variants to fit existing lighting systems

Platform layer · private deployment

Lighting policies, building-level energy metering, repairs and inspections, with building / floor / room hierarchy

Six functions, covering dormitories and public areas

WHAT YOU GET

Wire-free two-way battery-free switches

LD-S1/S2 with LD-AS pairs control the same lighting circuit from the door and bedside, kinetic powered with no battery changes.

Lighting groups & schedules

Corridors, stairs, classrooms and outdoor courts are grouped by timetable, daily routine and season, combining occupancy sensing with schedules.

Shower leak alerts

LD-FS electrode probes with cable extensions reach floor drains and service shafts; any water triggers a report and a repair order.

HVAC interlocks & temperature ceilings

Temperature & humidity and multi-function controllers drive actuators, switching HVAC by occupancy and setpoint.

Public-area occupancy sensing

mmWave presence sensors recognise stationary occupants, avoiding the false empty readings of conventional PIR during long periods of sitting.

Building-level energy metering

Lighting and HVAC energy by building, floor and circuit underpins before/after comparisons and quota management.

Typical BOM (one dormitory building)

TYPICAL BILL OF MATERIALS

LD-S1 / S2Battery-free wireless switch · 86×86 mm · door and bedside scene buttons · kinetic powered

LD-AS1 / AS2 / AS3Wireless switch · relay · 1 / 2 / 3 gang · pairs with battery-free switches for two-way control

LD-SA02 / 03Multi-function dual-channel actuator · lighting and solenoid valves · 10 A per channel

LD-FSElectrode water leak sensor · showers and washrooms · customisable probe cable

LD-LDULeak sensor · wet/dry telegrams · shafts and roofs

LD-OSRmmWave presence sensor · stationary occupant detection · RS485 optional

LD-MFCWireless multi-function controller · CO₂ · temperature setpoint and boost mode

LD-GW01EnOcean gateway · one per building · up to 50 devices

Typical configuration only. Integration with lighting circuits and existing DALI / Bluetooth dimming systems must be confirmed on site; add 4G gateways or repeaters for long-range backhaul between buildings.

What changes in management after rollout

DORMITORY

Two-way control without breaking walls; work scheduled outside occupied hours

Self-powered switches plus wireless actuators remove the control cable from bedside to door, so retrofits finish zone by zone outside occupied hours.

CAMPUS

Energy savings move from impressions to records

Building-level metering plus lighting-strategy logs put before/after energy use, repair response and inspection coverage on the same platform.

Retrofit one building, then replicate across the campus

Share building and room counts and existing lighting systems for a proposal with a model list, point layout and budget range.

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