Indoor Air Quality Monitoring

Il problema

Occupants and certification schemes ask for CO2, PM2.5, TVOC and humidity data, but there are no sensors on the BMS, and cabling every floor for them is costly in an occupied building.

Panoramica della soluzione

MILESGO gateways collect data from indoor air quality sensors (CO2, PM2.5, TVOC, T/RH), LoRaWAN wireless sensors, CO2 sensors, air handling units (AHU) over LoRaWAN / Modbus RTU, and deliver it to the BMS, a cloud platform (MQTT), large-screen dashboards (HDMI) as BACnet/IP / MQTT / Modbus TCP. Field equipment keeps its own protocol and control logic; integration is done by configuration and point mapping, not custom code.

Typical scope

indoor air quality sensors (CO2, PM2.5, TVOC, T/RH)
LoRaWAN wireless sensors
CO2 sensors
air handling units (AHU)

Protocol path

LoRaWAN / Modbus RTU → BACnet/IP / MQTT / Modbus TCP

Implementation checklist for the project manager

Run a LoRaWAN coverage survey and pick the regional band (EU868 / US915 / AU915 / AS923 / KR920 / CN470) before ordering.
Agree sensor positions (height, airflow, distance from doors and diffusers) so readings are representative.
Keep sensor calibration certificates on file and plan recalibration intervals.
Agree BACnet device instances, network numbers and BBMD with the BMS contractor to avoid conflicts.
Define an alarm matrix (priority, recipient, escalation) and test every alarm end to end at SAT.
Roll out in phases: pilot one site or area, confirm data quality, then replicate.

Project deliverables

Signed point table and protocol mapping
Gateway configuration files and backups
IP address plan and network drawing
FAT and SAT test records
As-built documentation and operator training

Architettura del sistema

Field layer: indoor air quality sensors (CO2, PM2.5, TVOC, T/RH), LoRaWAN wireless sensors, CO2 sensors, air handling units (AHU), connected over LoRaWAN / Modbus RTU. Edge and integration layer: MILESGO protocol gateways and edge controllers, mounted on DIN rail in existing panels, polling each device, time-stamping values and buffering them locally. Upper layer: the BMS, a cloud platform (MQTT), large-screen dashboards (HDMI), which receives the data as BACnet/IP / MQTT / Modbus TCP. Remote access for maintenance runs over VPN rather than open internet ports.

Composizione del sistema

Field devices: indoor air quality sensors (CO2, PM2.5, TVOC, T/RH), LoRaWAN wireless sensors, CO2 sensors, air handling units (AHU)
Edge / integration: MILESGO protocol gateways and edge controllers
Upper systems: the BMS, a cloud platform (MQTT), large-screen dashboards (HDMI) (BACnet/IP / MQTT / Modbus TCP)
Tools and commissioning: Web-based configuration, point table import/export (Excel), off-site simulation and on-site diagnostic tools

Funzionalità software e IA

Anomaly detection on trend dataIn roadmap
Automatic report drafting from collected dataIn roadmap

Fasi di realizzazione

1
Site survey and point list
Inventory devices, protocols, register maps, panel space, power and network paths.
2
Design and point table sign-off
Map every point to the target protocol and system; agree it with the client and the upper-system contractor.
3
Configuration and FAT
Build the gateway configuration off site, simulate it and test against the signed point table.
4
Installation and wiring
Mount gateways on DIN rail, wire RS-485 / I/O / Ethernet, apply the IP plan.
5
SAT and alarm tests
Verify values against local readings, test every alarm and command end to end.
6
Handover and support
Hand over configuration backups, point table and as-built documents; train operators.

Valore per il cliente

Reliable trend data for optimisation and fault diagnosis
Timestamped records for compliance and reporting
Data ready for cloud platforms and analytics
Abnormal conditions seen early, before they become failures

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