Communication system for actuation of multiple subscribers in a motor vehicle, and data bus for such a communication system

• Main Author: SEIDEL TORALF
• Format: Patent
• Language: Chinese; English
• Published: 01.08.2017
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The communication system (2) is used to actuate multiple subscribers (Ti), particularly LED modules within a motor vehicle, specifically for ambient lighting. The communication system (2) comprises a controller (K) and also the subscribers (Ti). In terms of hardware, the subscribers (Ti) are in this case connected in series in a ring structure via a data line (12). Each of the subscribers (Ti) has a control unit (18). For the purpose of actuating the individual subscribers (Ti), a data bus having a communication protocol (P), which has a linear juxtaposition of data packets (Di;Dc), is used, wherein for each subscriber (Ti), a subscriber-specific data packet (Di) is provided. In this case, a respective data packet (Di) is divided into a subscriber portion (T) and an information portion (I). The information portion (I) contains a respective piece of information about the status of the subsequent subscriber portion (T), particularly whether this subscriber portion (T) has already been received or has not been r