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Data transmission system, control device and method for data transmission

A technology of data transmission system and control equipment, applied in transmission system, wired transmission system, line transmission parts, etc., can solve the problem of reducing the signal-to-noise ratio of the receiver, etc.

Active Publication Date: 2022-01-14
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is obviously problematic for the new standard 1000Base-T1 with a bandwidth of about 350-500MHz, so EMI reduces the signal-to-noise ratio (SNR) of the receiver, and thus increases the bit-error rate (Bit-Error Rate)

Method used

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  • Data transmission system, control device and method for data transmission
  • Data transmission system, control device and method for data transmission
  • Data transmission system, control device and method for data transmission

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Embodiment Construction

[0025] Before elaborating the present invention in detail, it should first be Figure 5 Briefly describe the prior art. The data transmission system 1 has a first control device 2 and a second control device 3 , via which bidirectional point-to-point communication is possible. Arranged upstream of each control device 2 , 3 is an independent first common-mode filter 4 , which is designed, for example, as a common-mode choke, where the two wires of the bifilar line 5 surround a common ferrite in opposite directions Core or ferrite ring wound. The two-wire conductor 5 is connected at its end to a connector or plug 6 . In this case, an electrical isolation in the form of a transformer 7 can also be arranged between the plug 6 and the common-mode filter 4 . Alternatively, the transformer 7 can also be replaced by a capacitive coupler. The useful signals between the two control devices 2 , 3 are transmitted via differential signals, wherein common-mode components caused by elect...

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PUM

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Abstract

The invention relates to a data transmission system (1), wherein the data transmission system (1) has a first control device (2) and a second control device (3), wherein the transmission between the two control devices (2, 3) The line is formed at least partially by a two-wire conductor (5), via which the useful signal is transmitted as a differential signal between the first control device (2) and the second control device (3), wherein the first control device (2) has Transceiver (9), the second control device (3) has a receiver (8), wherein a measuring circuit (10) is arranged upstream of the receiver (8) of the second control device (3), which is designed for collecting useful Common-mode components in the signal, wherein an error correction circuit (11) is provided, which is configured to generate a correction signal (F) as a function of the detected common-mode components, wherein a compensation circuit (12) is arranged downstream of the receiver (8), wherein The compensation circuit (12) is designed to correct the useful signal received by the receiver (8) by means of the correction signal (F). The invention also relates to a control device and a method for data transmission.

Description

technical field [0001] The invention relates to a data transmission system, a control device and a method for data transmission. Background technique [0002] The rapid advancement of technological research and development in the car interior has resulted in a significant increase in the number of electrical and electronic systems in the car: system control area network (CAN), security systems, communications, mobile multimedia, infotainment systems including wireless handsets, DC motors and control devices (only a few are mentioned). Extreme size and weight constraints in automotive design require these systems to have very small (physical) form factors. But that doesn't necessarily mean that electromagnetic emissions (EME) are also smaller. If a large number of electrical and electronic systems are now placed in a very limited space (of a car), the problem of electromagnetic interference (EMI) based on mutual interference caused by wires and radiated emissions increases....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B3/32H04B3/30
CPCH04B3/30H04B3/32H04B3/487
Inventor L.迪亚兹奥尔特加F.格费斯
Owner VOLKSWAGEN AG