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Subscriber station of a bus system and method for transferring messages between subscriber stations of a bus system

A bus system and user station technology, applied in the field of identifying transmission conflicts, can solve problems such as high cost, high cost of identification codes, and difficulties

Active Publication Date: 2014-11-05
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This results in data loss
[0008] In addition, a lot of coordination and therefore expensive documentation is required when configuring the CAN bus so that all subscriber stations of the CAN bus are assigned different identification numbers
If the CAN bus is to be expanded later by additional subscriber stations, then the identification of the subscriber station as a transmitter becomes even more complex or difficult

Method used

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  • Subscriber station of a bus system and method for transferring messages between subscriber stations of a bus system
  • Subscriber station of a bus system and method for transferring messages between subscriber stations of a bus system
  • Subscriber station of a bus system and method for transferring messages between subscriber stations of a bus system

Examples

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Embodiment Construction

[0033] figure 1 A bus system is shown, which can be, for example, a CAN bus system that can be used in vehicles or the like or in hospitals or the like. The bus system 1 has two first subscriber stations 10, a second subscriber station 20, and a bus 30, to which the first and second subscriber stations 10, 20 are connected and to which the first and second subscriber stations 10, 20 Messages 40 can be transmitted and received over the bus.

[0034] exist figure 1 Each of the first subscriber stations 10 has a microcomputer 11 , a CAN controller 12 hereinafter referred to as CAN controller 12 and a CAN transmitter / receiver 14 hereinafter referred to as CAN transceiver 14 . The microcomputer 11 is connected to a CAN controller 12 via a connection 15 . The CAN controller 12 is connected to a CAN transceiver 14 via a connection 16 . Data can be exchanged between microcomputer 11 , CAN controller 12 and CAN transceiver 14 via connections 15 , 16 . The data can be messages 40 a...

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PUM

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Abstract

The invention relates to a subscriber station (20) of a bus system (1) and to a method for transferring messages (40) between subscriber stations (10; 20) of a bus system (1). The subscriber station (20) comprises a comparison device (23) for comparing an identification code (41) of a received message (40) with a preconfigured transmission identification code (55) of a transmission memory (54) of the subscriber station (20).

Description

technical field [0001] The invention relates to subscriber stations of a bus system and to a method for transmitting messages between subscriber stations of a bus system, wherein in particular transmission collisions can be detected independently by the subscriber stations. Background technique [0002] A bus system is known in which messages are transmitted by means of the CAN protocol, as described in the CAN specification in ISO11898. [0003] DE 100 00 305 A1 describes CAN (Controller Area Network=Control Device Network) and an extension of CAN called TTCAN (Time Triggered CAN=Time Triggered CAN). [0004] CAN and TTCAN operate as message-based protocols and are used, for example, in vehicles. A bus system based on CAN or TTCAN enables all subscriber stations connected to the bus system, such as microcontrollers, to communicate with one another. [0005] Since all subscriber stations of the CAN bus want to access the CAN bus in order to transmit messages, the right to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/413H04L29/12
CPCH04L61/2038H04L2012/40215H04L2012/40273H04L61/2046H04L12/4135H04L2012/40241H04L61/5046H04L61/5038G06F13/4208H04L12/40169
Inventor F·哈特维希C·霍斯特
Owner ROBERT BOSCH GMBH