dfreeeze: App solution for controlling auxiliary heaters in cars

Functions of dfreeeze

Arrive comfortably and safely

In addition to immediate and range-independent heating/ventilation of the car, dfreeeze provides the possibility of directly setting the desired departure time. The system automatically calculates the required heating intensity and duration. This ensures, that the car is optimally preheated and freed of ice and snow at departure time. The same applies to the ventilation function in summer time. For a quick check in between, dfreeeze, in conjunction with the associated temperature sensor, offers the possibility of checking the temperature in the car as well as the status of the system.

The backend: dfreeeze server

Stable, secure processes

The server enables a highly secure payment process. Additional functions: user management and administration, configuration management, display of user conflicts during simultaneous use and activation/deactivation of the SIM chip, authorization checks to monitor the use of the SIM.

The hardware: dfreeeze module

Automotive-certified heart of the dfreeeze system

The robust, AECQ-certified control unit connects the server and the auxiliary heater with each other. The communication with the server takes place via SMS and TCP/IP. Due to the pre-installed eUICC-SIM chip, manual intervention by the end user is no longer necessary, and a subsequent change of provider is possible. The miniaturized electronics, coupled with minimal power consumption, allows the installation in any vehicle. The implementation of a 4G variant is already planned through nested design.

The software: dfreeeze App

Easy use and configuration

The app's intuitive design allows the auxiliary heater to be controlled quickly and range-independently. Even several vehicles can be managed in the app. The freely selectable start page and the use of an android widget guarantee easy operation.