IoT in buildings

Data can automate, optimize and provide a better indoor climate

Sensors in buildings enable energy optimization as well as indications for mold risk in the ceiling, fire risk in electrical panels and poor indoor climate.

Data collection for better operation

The development of cheap sensor technologies provides exciting opportunities within construction and operation of buildings.

By collecting data in buildings, you gain insight into the use and operation of the building. Data can be used to e.g. help residents know when to air the room and minimize the risk of mold.

To collect data, there are several different solutions that Xtel has been a part of with different applied technologies, for example, NB-IoT and Bluetooth LE.

Energy Harvesting – battery-free sensors

Energy Harvesting offers potential for all industries and different fields of application. One of the most prominent industries for Energy Harvesting is building segments with HVAC (Heating, Ventilation and Airconditioning). Within HVAC, Energy Harvesting provides opportunities for major savings through:

  • Energy optimization of individual products, such as heating systems, ventilation etc.
  • Significantly lower operating costs for products and overall systems, including installation, maintenance and commissioning
  • Intelligent monitoring and management of devices
  • Continuous feedback on energy consumption
  • The ability to use large volumes of sensors in building management and HVAC, resulting in large savings in maintenance.

Energy Harvesting sensors enable the sensors to be placed in locations that were previously inaccessible due to, among other things, battery change. This provides the ability to monitor, receive alarms and regulate the various products in a building in a different way than today.

The Energy Harvesting examples below highlight the product opportunities and the subsequent services that the products together make up:

Placering af gateway i rum
Mørkeblå regtangle


This product collects all information and data from the various sensors in the building. It sends the data to a central location in a secure manner where the information is processed for decisions to be made based on it. It can operate fully automatically, thereby intelligently controlling the various products in the building.

Placering af belysning i rum
Gul rektangle

Sensor-controlled lighting:

Sensor-controlled lighting is known in the building industry, however through an Energy Harvesting product, it is possible to develop sensors that do not use a battery, which leads to a significant reduction in installation costs. The sensor can tell if there are people in the room, how many there are and how often they are there.

Ventilation i rum
Blå rektangle

Ventilation system:

Energy Harvesting sensors are also ideal for assembling in the ventilation system, as the sensors can be placed in different spots and monitor CO2, temperature, pressure and humidity. The ventilation system is one of the building’s most energy-consuming components and thus obvious to monitor to ensure it operates optimally.

Varmeregulator i rum
Brun rektangle

Thermostat and heat regulator:

Controlling thermostats via heat regulation is also ideal for Energy Harvesting sensors. Sensors can intelligently control the heat requirement and thereby ensure that the right amount of energy is used correctly for heating the building.

Energy Harvesting – services example HVAC

By combining the four areas described, it is possible to design different services and new business models for the HVAC segment. Energy Harvesting sensors enable the sensors to be located in places that were previously inaccessible, allowing for monitoring, receiving alarms and regulating the various products in a building in a more comprehensive and optimized way than today.

For example, the Energy Harvesting sensors could be used to collect data in the building system, thereby generate learning about how and when users use the buildings. Based on this knowledge, the systems can be more optimally regulated. This could mean that the building does not need to be cooled or heated when there are no people in there. Furthermore, based on the sensor data, it will be possible to demonstrate the energy consumption in the building, thereby identify any defective units, incorrect regulation etc. As a service, you will be able to deliver average energy consumption and be able to pin-point challenges.

HVAC i bygning

Indoor climate solutions:

Several sensors kan can be combined in one solution:

  • CO₂-sensor
  • Temperature sensor
  • Humidity sensor
  • Atmospheric pressure sensor

Contact Mogens if you are interested in hearing more about IoT within buildings.

Mogens Durup Nielsen – or +45 30 98 41 40