dfreeeze: App solution for controlling auxiliary heaters in cars
Limitless comfort thanks to dfreeeze for cars
dfreeeze is a universally applicable connected car solution for simple and range-independent control of auxiliary heating and ventilation. A smartphone app and the corresponding receiver in the car communicate with the auxiliary heater's receiver in the vehicle. The auxiliary heater can still be operated by radio remote control. Auxiliary heater and ventilation are controlled via a server using an app/web app from a smartphone, tablet or PC. dfreeeze is based on the digades "D200" platform.
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.
components of the dfreeeze system
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dfreeeze receiver
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dfreeeze App for Android, iOS, Web
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dfreeeze backend
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Accessories (windscreen adhesive antenna, cable harness, plug and socket housing)
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.
server-based structure
Advantages of the server-based concept
- In-App send/receive control commands and feedback messages
- Response times < 10 seconds through deterministic, non-load-dependent, connection-oriented data transfer
- High throughput rates through direct connection (at least 500 commands/minute)
- Increased security
- High availability, also internationally through close cooperation with network operators
- Increased user-friendliness through the use of familiar interfaces (authentication) in the app and web portal
- Controllable costs
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.
Technical details receiver
- Transmission frequency: Quad-Band
- Operating voltage: 12 V DC (9 to 16 V DC)
- Quiescent current consumption: <5 mA (Stand by Mode)
- max. output current: 200 mA (12 V DC)
- Working temperature: -40°C to +85°C
- Connections
- Antenna FAKRA standard
- 6-pin system plug (12V DC (vehicle on-board power supply)
- W-Bus/LIN
- Switching output
- Clocks/button/alarm input
- Dimensions L x W x H: 88 x 65 x 20 mm
- Weight: <100 g
- Protection class: IP43
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.
Available on smartphone, tablet, PC:
- iOS App
- Android App
- Web-App
Functions:
- Control auxiliary heating (heating/ventilation/automatic)
- Program departure time
- Request temperature
- Display system status
- Make settings
dfreeeze activates the auxiliary heater in the vehicle via App.
The server-based status query of the dfreeeze system is based on highly secure, encrypted communication.
The dfreeeze app offers many options for controlling the parking heater: immediate on/off, programming, checking status.
dfreeeze has a permanently installed SIM chip and is therefore ideally suited for everyday use in cars.
dfreeeze can be used for all EU countries, Norway and Switzerland, and the system can be approved for other regions.
dfreeeze heats up frozen car windows. with a click in the app, the auxiliary heater in the car preheats the car.
The dfreeeze receiver is connected to the receiver of the auxiliary heater and thus enables convenient control of the heater via app.
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