MoDAT-GTX (system overview)
(by BS*Ware)
MoDAT-GTX is a Mobile Data Acquisition and Transmission
System using GPRS, TCP/IP and XML for communication.
MoDAT-GTX consists of three modules:
- The MG/MU (Mobile Unit)
- The MG/SU (Server Unit)
- The MG/IU (Interface Unit)
Mobile Unit (MU)
The MU consists of
- an embedded system (single-chip computer) with several interfaces
- a GPS receiver (i.e. Garmin 35LP)
- a GPRS mobile phone (i.e. Ericsson R520m, Motorola T260)
The MU is responsible for
- Data collection (i.e. positioning data from GPS, digital inputs,
data from serial equipment etc.)
- providing a (simple) user interface (messaging, acknowledgements)
- Data preprocessing and caching
- (Communication with other mobile devices (Bluetooth, IrDA, Ethernet))
- Communication with one (or more) Server Unit(s) (IP-Sockets)
Server Unit (SU)
The SU is responsible for
- Communication with the MUs
- Data handling (storage, logging)
- Data validation and processing (i.e. map matching)
Interface Unit (IU)
The IU is responsible for providing the data to subsystems (customer applications).
The data can be provided in different ways:
- Online - Active: The IU pushes the data to subsystems using http
and XML
- Online - Passive: The data can be requested from the IU by subsystems
using http and XML/HTML
- Offline: The data is stored in files or databases, the subsystem
accesses the data by reading the files / querying the database
Remarks
- At the moment MoDAT-GTX is a prototype system.
- We have to thank Ericsson (Ericsson Austria AG) and ONE (Connect
Austria GmbH) for the cooperation.
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