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Subscriber station for a bus system and method for increasing interference immunity in the area of electromagnetic compatibility for a subscriber station

一种电磁兼容性、总线系统的技术,应用在传输系统、基带系统、总线网络等方向

Active Publication Date: 2017-02-22
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Even with the migration of existing control equipment and vehicle platforms to higher data rates through the introduction of CAN-HS and CAN-FD, however, when CAN transceivers should be utilized to implement not only conventional CAN-HS operation but also CAN-FD operation , there is a problem

Method used

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  • Subscriber station for a bus system and method for increasing interference immunity in the area of electromagnetic compatibility for a subscriber station
  • Subscriber station for a bus system and method for increasing interference immunity in the area of electromagnetic compatibility for a subscriber station
  • Subscriber station for a bus system and method for increasing interference immunity in the area of electromagnetic compatibility for a subscriber station

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Embodiment Construction

[0033] figure 1 A bus system 1 is shown, which can be, for example, a CAN bus system, a CAN-FD bus system or the like. The bus system 1 can be used in vehicles, in particular motor vehicles, aircraft, etc., or in hospitals or the like.

[0034] exist figure 1 In this case, the bus system 1 has a plurality of subscriber stations 10 , 20 , 30 which are each connected to a bus 40 having a first bus conductor 41 and a second bus conductor 42 . The bus lines 41 , 42 can also be referred to as CAN_H and CAN_L and serve to couple in the prevailing voltage levels in the transmit state. Messages 45 , 46 , 47 can be transmitted in the form of signals between the individual subscriber stations 10 , 20 , 30 via bus 40 . Subscriber stations 10 , 20 , 30 can be, for example, control devices or display devices of a motor vehicle.

[0035] as in figure 1 As shown in , the subscriber stations 10 and 30 respectively have a communication control device 11 , a sending device 12 , a receiving...

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Abstract

The invention provides a subscriber station (10; 30) for a bus system (1) and a method for reducing line-conducted emissions in a bus system (1). The subscriber station (10; 30) comprises a transmission device (12) for sending a message (45, 47) to a further subscriber station (20, 30; 10, 20) of the bus system (1) via the bus system (1), wherein exclusive, collision-free access by a subscriber station (10, 20, 30) to a bus (40) of the bus system (1) is ensured at least intermittently, and a switching device (150, 1400, 1450) for switching off a current limiting function of the transmission device (12) when a HF signal component (5) on the message (45, 47) sent by the transmission device (12) is sensed and a method for measuring interference immunity in the area of electromagnetic compatibility is carried out for the transmission device (12).

Description

technical field [0001] The invention relates to a subscriber station for a bus system and to a method for increasing the noise immunity of the subscriber station within the framework of electromagnetic compatibility in order to meet the signal balance requirements of the bus system. Background technique [0002] CAN bus systems are used, for example, in vehicles for the networking of devices for communication and, due to their parallel topology, are very well suited for a wide variety of further communication applications. In the CAN bus system, messages are transferred using the CAN protocol, as described in the CAN specification in ISO11898. [0003] Nowadays, it is always more frequently necessary to use CAN bus systems in which higher clock speeds and thus higher data transmission rates can be realized than in CAN such as CAN-HS, CAN-FD, etc. In the CAN-HS bus system (HS = High Speed ​​= Highspeed), data transfer rates up to 500 kBit per second (500 kbps) are possible. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/40H04L12/413
CPCH04L12/40084H04L12/4013H04L12/40169H04L12/4135H04L2012/40215G06F13/36G06F13/4022G06F13/42G01R31/2818G06F11/221H04L25/0286G06F13/4295H04L25/0274H04L12/413
Inventor S.瓦尔克A.潘维茨
Owner ROBERT BOSCH GMBH
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