Short-range radio

Meter reading with RF collectors

The enemy of wireless reading is concrete. An RF collector sits close to the meters, gathers their data and forwards it to the central modem — so the meter in the basement or inside a shaft is read too.

At a glance

Purpose: Solving in-building coverage problems
Placement: Floor, block or shaft level
Source: Usually meters broadcasting wM-Bus
Path: Collector → central modem → panel

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What is an RF collector?

An RF collector is an intermediate device placed at floor, block or shaft level inside a building. It gathers data from meters within range over short-range radio and forwards it to the central modem or directly to the panel.

Its purpose is not to extend range for its own sake but to get past an obstacle. Reinforced concrete walls, metal doors and service shafts attenuate radio signals badly. Because the collector sits close to the meter, the meters behind those obstacles come back into the system.

This method is usually paired with meters that broadcast wM-Bus telegrams; the collector is the listening side. In mixed installations some blocks are covered by collectors while others are read directly by a central receiver.

How it works

Reading with RF collector, step by step

The path from installation to an index landing in the panel.

Coverage is surveyed
Meter positions and building structure are reviewed to identify which points cannot reach the central receiver.
Collectors are positioned
A collector is placed near the meters that fall outside coverage. One collector typically takes on a floor or a section of a block.
Meters bind to the collector
The collector listens to and records broadcasts within range; the panel shows which meter arrived through which collector.
Data goes to the centre
The collector forwards accumulated data to the central modem, from where it lands in the panel and enters the archive.
Coverage stays monitored
Meter count per collector and last data time are tracked. When a collector goes quiet, every meter in that area is flagged at once.

Technical summary

Purpose: Solving in-building coverage problems
Placement: Floor, block or shaft level
Source: Usually meters broadcasting wM-Bus
Path: Collector → central modem → panel
Monitored: Meters per collector, last data time

Choosing

When is RF collector the right choice?

There is no single right path for every building. These two lists are the criteria we apply during a site survey.

Good fit

Meters in basements, car parks and lift shafts
Service shafts with metal covers
Multi-block structures with thick reinforced concrete walls
Projects where a single central receiver is not enough

Poor fit

Projects where cable can be run and a permanent solution is preferred
Small buildings where one receiver hears every meter comfortably

In NovuSoft

How RF collector reading is managed in the panel

Supporting a protocol is not enough; what the data means and what happens when a meter cannot be read must be defined too.

Visibility per collector

The panel shows which meter came through which collector, so when a group of meters goes unread the source of the problem narrows immediately.

Coverage reporting

Meters with no data for a long time and collectors that have gone quiet are gathered in separate lists, sending the field team straight to the right point.

Mixed installations

In one project some blocks can use collectors while others run wired M-Bus or direct wireless reading. Everything writes to the same archive.

Handover to the field

Where coverage cannot be secured permanently, those meters move to a field reading task so the period never waits.

Frequently asked questions

Questions about RF collector

Can wireless reading work without a collector?

Yes, in buildings where the signal reaches the central receiver no collector is needed. Collectors come in exactly where concrete or shafts cut the signal.

How many meters does one collector handle?

It depends on device capacity and building structure. In practice one collector usually takes a floor or a section of a block; the required count is worked out during the survey.

What happens if a collector fails?

Every meter in that area becomes unreadable at once — a pattern clearly distinguishable from a single faulty meter in the panel. Until the collector is replaced, those meters can be moved to a field task.