Swissframe – Decentralized Hot Water IoT

Challenge

Decentralized hot water systems in apartment buildings and hotels are difficult to maintain. Service technicians had to travel on-site to diagnose problems. While Swissframe Thermos devices save up to 50% energy in hot water preparation – for remote maintenance and optimization, they needed to be networked.

Solution

As part of an Innosuisse project with FHNW:

• Refactoring of embedded software (.NET 8.0 on Raspberry Pi)
• AWS IoT connectivity with CloudFormation for secure device communication
• Visualization and dashboards with QuickSight and Timestream
• Automation solution for device setup without manual intervention (PXE Boot, Ansible)
• Integration of additional sensors and actuators

Our Contribution

• Complete refactoring of control software on Raspberry Pi (.NET)
• Extension of functionality with additional sensors and actuators
• Setup of AWS IoT infrastructure with CloudFormation
• Development of automation solution for device setup without manual intervention
• Visualization with QuickSight and Timestream
• Support for development and operations

Technologies

Results

Service technicians can now diagnose problems from anywhere and often resolve them without an on-site visit. Customers benefit from faster response times and lower maintenance costs.