Cities
Municipal low-power radio or private 5G layer
A city-wide connectivity layer as digital public infrastructure.
Cities: the city measured block by block: the site at a glance. The loop, step by step: 1. Gates open and the stadium starts to fill. 2. Sensor, link, edge and console stand ready. 3. A crowd surge builds toward the north gate. 4. Cameras count the flow at every gate. 5. Each reading is stamped with time and place. 6. Counts reach the edge over the stadium radio. 7. The relay forwards sealed packets untouched. 8. Signatures are checked before any model runs. 9. The edge model estimates density per gate. 10. The edge releases confirmed results only. 11. The control room sees the density map. 12. The alert arrives with its evidence attached. 13. Stewards open the south gate and capacity rises. 14. Instruments confirm the response took effect. 15. The whole chain is archived for audit. 16. The crowd spreads out and the radio relaxes.
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Gates open and the stadium starts to fill
Nexus Observatory/
CitiesThe city, measured block by block.
Street-level flood depth, air quality and heat, mobility and noise, carried on a municipal sensing and connectivity layer, with twins of the streets they sit in and open data residents can read.
Plan a deploymentUse casesOpen the explainerIn the field
Guided 3D tourCity block
Small cells on street poles, air-quality nodes and heat sensors across four blocks, joined to an edge node that publishes open city data.02Stories
How it works, in place.
Interactive stories with figures drawn to scale and every claim referenced.
All stories Place: Dense city block The instrumented streetFour city blocks, read as an observing system: small cells on street poles, air-quality and heat sensors beside them, and an edge node that corrects, times…Place: Suburb The suburb as a power stationRooftop solar, home batteries and electric vehicles turn a residential street into thousands of small generators. Observing them is how a distribution grid…System: LPWAN and mesh Kilometres on a coin cellMost environmental sensors send a few bytes a few times an hour. Low-power wide-area networks trade bandwidth for range and battery life; mesh networks…03Specialized fields
Cities, field by field.
A city is many services on the same streets. The air people breathe, the heat that builds between buildings, the traffic and the people moving through, the public buildings and their energy, the waste collected every day and the noise of the night each measure different things for different departments. Each field below has its own stack, radio, power and crew work, from the first order to the running operation.
Specialized fieldUrban air quality
Reference stations and dense sensor networks for particles and gases, with weather to trace sources, calibrated against each other, on cellular and LoRaWAN, for street-level maps people can trust.The full field →Specialized fieldUrban heat and trees
Street-level temperature and humidity across neighbourhoods, tree soil moisture and heat-health alerts, on LoRaWAN across the city, so cooling and watering go where people suffer most.The full field →Specialized fieldStreets and mobility
Counts of people, bikes and vehicles, speeds, kerb use and junction safety by camera and radar processed at the edge, on private 5G and fibre, so streets are planned on evidence and privacy is kept.The full field →Specialized fieldPublic buildings and energy
Energy, heat and water meters, indoor air and comfort in schools, offices and pools, with weather for normalisation, on the buildings’ own networks behind a security gateway.The full field →Specialized fieldWaste and street services
Bin fill levels, collection routes, transfer station gas and weather, on LoRaWAN across the city, so crews empty what is full and the waste record follows from the work.The full field →Specialized fieldNoise and the night-time city
Class 1 noise monitoring at hot spots, event classification at the edge for nightlife, construction and traffic, with weather, on cellular, so complaints are answered with evidence and noise plans work.The full field →04The problem
What this industry has to measure.
Air quality, noise, traffic, urban heat and street flooding, with open data as a procurement credential.
01Street flooding
02Air quality and urban heat
03Structural condition of public assets
04Connectivity for municipal sensors
05Open data for residents
05Outcomes and proof
What you get, and how you can check it.
Every system we deliver comes with the evidence a buyer, an auditor or a regulator asks for.
What you can measure
- Street flooding
- Air quality and urban heat
- Structural condition of public assets
- Connectivity for municipal sensors
- Open data for residents
Proof buyers ask for
- Co-location calibration reports against reference monitors
- Data-completeness service levels
- An open-data API
- A privacy impact assessment for video and probe sensing
- Accessible dashboards
- Survey accuracy (GSD, check points)
- Deformation precision
- Method statements
06Use cases
Where it is deployed.
Worked use cases and deployment scenarios. Open one for the kit, the data products and the standards.
Use case · low complexityStreet flood observatory
Ultrasonic depth sensors on poles report street-level water depth as open data and alerts.- Who
- Cities, emergency management agencies and universities.
- Data
- Street-level water depth time series; Open data feed and alerts to emergency management and 311
Hybrid air-quality observatory
A few reference analysers and many low-cost nodes, with co-location calibration and an open-data feed.- Who
- Cities, public-health units, school districts.
- Data
- Air-quality index and hyperlocal maps, labelled supplementary; Calibrated time series with quality flags; Publication route to an open air-quality aggregator
Hybrid air-quality network
Reference analysers plus calibrated low-cost nodes; low-cost sensors alone do not meet regulatory requirements.The full use case →07Solution bundles
Start with one unit. Grow to a network.
The same systems at every scale, on the open protocol, so nothing you buy is replaced as you grow.
- 01
Base unit
One station or node, specified for this industry: instruments, power, enclosure and backhaul.
Build a station → - 02
Site
A surveyed, commissioned site with its timing, its links and the evidence file a buyer can audit.
Plan a site → - 03
Fleet
Many sites run as one service: one plan, one update path, one evidence trail, one service level.
Managed offers → - 04
Network
Fleets that federate with partner grids through the open protocol, owner by owner.
The open protocol →
08Solutions
What we deliver.
Each offer is designed, deployed and run on the open protocol by Nexus Observatory Inc.
managed service, data licence
Hybrid air-quality networks
Reference analysers plus calibrated low-cost nodes, with co-location calibration and an open-data interface.
How we deliver it →professional services, data licence
Drone survey and 3D site twins
Survey campaigns planned to the ground sample distance, photogrammetry and LiDAR, and site twins kept current.
How we deliver it →managed service, data licence
Structural and ground-movement monitoring
GNSS, InSAR, tilt, strain and fibre sensing on bridges, dams, slopes, tailings and pipelines, with alert thresholds set by the owner.
How we deliver it →managed service
Municipal sensing and connectivity layers
City-wide LPWAN or private 5G as a shared layer for public sensors and services.
How we deliver it →09Service platforms
The platforms behind it.
The service platforms that build the systems this industry runs on.
Service platformConnectivity
Private 5G, AI-RAN and orbit, on site.Service platformSensors & instruments
Measurements that carry their own proof.Service platformData & licensing
Grid data, licensed for your use.Service platformEarth observation & GeoAI
The ground, measured and modelled.Service platformField services
Survey to decommission, one accountable crew.Service platformDigital twins and simulation
Model the site before you build it.10Standards and compliance
Drawn against the standards your auditors use.
Standards the systems are drawn against
- OGC SensorThings API 1.1
- Municipal open-data terms
- EU Directive 2024/2881 (ambient air quality)
- CEN/TS 17660 (sensor systems)
- US EPA FEM/FRM reference methods
Regulation and authority
- Spectrum and sitingLicences, permits and siting are part of the plan, country by country. Country notes →
- Privacy and dataYour data stays yours, under the licence you choose. Privacy notice →
- SecurityHardware-rooted identity and signed updates on every device. Security →
11Questions buyers ask
Before you scope it.
Who sells, and who owns the data?
Nexus Observatory Inc. is the seller of record. The data your systems collect stays yours, under the licence you choose.
Do we have to buy hardware?
No. We deliver as a managed service, a data licence or a system you own.
Can we start small?
Yes. Start with one station or one site, then grow to a fleet and a network on the same open protocol, without replacing what you bought.
Which standards do the systems meet?
Each system is drawn against the open protocol and the standards it is composed from, listed on this page.
What happens after go-live?
We run the systems to a written service level, with monitoring, repair and an evidence trail, or train your team to run them.
Ready when you are.
Plan a deployment, configure a station or talk to sales. Every request reaches the team that answers it.
Plan a deploymentStation BuilderTalk to sales12Open and community
Open by default. Built with the people who use it.
Open data, open methods and the open protocol, with the people who use them.
Open projects this community builds on
- Sensor.Community
- OpenAQ
- FloodNet
- Smart Citizen Kit
- Telraam
- openSenseMap
Take part
13Public and civic
Neighbouring industries.
IndustryPublic safety
Warning time, gained at the sensor.IndustryGovernment
National observing infrastructure, delivered as one programme.IndustryCivil resilience
Infrastructure that reports before it fails.IndustryCommunities
Connectivity and observation the community owns.IndustryHumanitarian
Observation where the need is greatest and the grid is thinnest.Bring us the site.
Survey, design, deployment and operation for cities. The form names who receives your details.
Talk to usPlan a deployment