Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication
Reexamination Certificate
2003-05-05
2003-12-16
Beaulieu, Yonel (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
C701S033000
Reexamination Certificate
active
06665593
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a device for transmitting data between vehicle sensors and a processor of a control unit.
BACKGROUND INFORMATION
In conventional communication systems for transmitting data between vehicle sensors and a processor of a control unit, it is possible to use special data telegrams for transmitting data between a sensor and a processor in a control unit.
SUMMARY
A device according to an example embodiment of the present invention for transmitting data between vehicle sensors and a processor for the control unit includes an interface module that receives first data telegrams from a plurality of vehicle sensors, captures the data from the first data telegrams, unformatted, and sends them on synchronously in second data telegrams to the processor within the control unit. It is thereby possible to let various sensors simultaneously transmit data to the control unit in different formats for the individual data telegrams between the interface module and the sensors. Therefore, the device according to the present invention is extremely flexible and expandable.
According to one implementation, the data field of the second data telegram is filled up with zeros, if, in the respective data telegram from the sensor, there is less data than the maximum level the data field can accommodate. Thereby, advantageously, the same data telegram format may be used for the processor. This leads to a simplified processing of the data.
In addition, according to an example embodiment of the present invention, a memory of the interface module may be included for temporary storage of sensor data, so that a processor may retrieve old or new sensor data. This is particularly advantageous when a sensor fails, and thus the preceding sensor data may still be available for further processing. This case may arise when there is a collision in which vehicle sensors that are situated peripherally in the vehicle are damaged by the impact.
According to an example embodiment of the present invention. the interface module receives the data telegrams from the vehicle sensors in 13-bit data frames, and counts out the edges of the data frames in order to recognize the data telegrams.
The vehicle sensors may be supplied with electrical energy by the interface module. The data transmission can used for this by a current modulation of the direct current used for the energy supply. The current modulation is less sensitive with regard to EMV problems. Furthermore, Manchester coding may be used, so that only two different current levels are used.
REFERENCES:
patent: 4023753 (1977-05-01), Dobler
patent: 5734569 (1998-03-01), Foreman et al.
patent: 0 250 698 (1987-01-01), None
patent: 09 246 22 (1999-06-01), None
Lukacic Davor
Otterbach Jens
Straub Bernhard
Taufer Peter
Tschentscher Harald
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