Subscriber station for a serial bus system, and method for communicating in a serial bus system

A technology of serial bus and bus system, which is applied in the field of user station for serial bus system and for communication in serial bus system, and can solve the problems such as unusable

Active Publication Date: 2022-01-28
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the arbitration has the consequence that current CAN-based bus systems for applications that require 100% deterministic bus access, that is, for the subscriber stations of the bus system can at any time send messages or frames at certain times This guarantee is currently not available

Method used

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  • Subscriber station for a serial bus system, and method for communicating in a serial bus system
  • Subscriber station for a serial bus system, and method for communicating in a serial bus system
  • Subscriber station for a serial bus system, and method for communicating in a serial bus system

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Embodiment Construction

[0047] figure 1 As an example shows a bus system 100, in particular the bus system 100 is configured substantially as a CAN bus system and / or FD-CAN bus systems and / or subsequent CAN FD-HBr XL - referred to herein as CAN bus system - a bus system and / or different from the modifications of this embodiment, as described as below. The system bus 100 can be used in a vehicle, especially a motor vehicle, aircraft, or in hospitals.

[0048] exist figure 1 , The bus system 100 having a plurality of user stations 10, 20, which are respectively connected to the bus with a first bus and a second bus 41 core wire 42 core 40. Implicit said bus wire 41, 42 can also be referred CAN_L or CAN_H and CAN-XL_H and CAN-XL_L and for coupling the input electrical signal transmission after a dominant level or a signal generated in the transmission state sexual level. Through the bus 40 can be in the form of a serial transmission signal of a user message 45, 46 between the respective stations 10,2...

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Abstract

The invention provides a subscriber station (10; 20; 30; 1 - 4) for a serial bus system (100) and to a method for communicating in a serial bus system (100). The subscriber station (10; 20; 30; 1 - 4) comprises a communication control device (11; 21; 31) for controlling communication of the subscriber station (10; 20; 30; 1 - 4) with at least one other subscriber station (10; 20; 30; 1 - 4) of the bus system (100), a transmission / capturing device (12; 22; 32) for transmitting a transmission signal (TX1; TX2; TX3; TX4), generated by the communication control device (11; 21; 31), in a frame (450; 460) to a bus (40) of the bus system (100), and a scheduling unit (15; 25; 35) for planning temporal access of the subscriber station (10; 20; 30; 1 - 4) to the bus (40) in at least one time slot (S1 - S4) of a round (C) of temporal subsequent time slots (S1 - S4). At least one time slot (S1 - S4) is provided in a round (C) for each subscriber station (10; 20; 30; 1- 4) of the buses (40) for transmitting their transmission signal (TX1; TX2; TX3; TX4) and the round (C) repeats in cycles. The scheduling unit (15; 25; 35) is designed to determine an allocation, using at least information captured by the bus (40), which time slot (S1 - S4) of the round (C) the transmission / capturing unit (12; 22; 32) may use to transmit the frame (450; 460) for the transmission signal (TX1; TX2; TX3; TX4) to the bus (40).

Description

Technical field [0001] The present invention relates to a subscriber station for a serial bus system and a method for communicating in a serial bus system, using the subscriber station and method for communication for real-time critical applications. Background technique [0002] For the communication between the sensors and the control device in the vehicle, the current replacement point-to-point connection is increasingly frequently frequently frequently frequently frequently frequently frequently frequently frequently used, and the data in the bus system is in standard ISO11898-L. : 2015 is used as a CAN FD as a CAN protocol specification. The message is transmitted between the user station of the bus system, such as sensors, control devices, transmitters, etc. Here, the CAN FD is currently used in the first step in the introduction phase to be used in the bit element of 2 mbit / s data bit rate in the transmission data segment and the arbitration of 500 kbit / s is located in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/417
CPCH04L5/22H04L5/0094H04L5/0091H04L5/0078H04L5/0048H04L5/1469H04L12/40013H04L12/4015H04L2012/40215H04L12/413H04L7/00H04L17/30
Inventor F·哈特维奇S·沃克尔A·穆特尔
Owner ROBERT BOSCH GMBH
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