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Electronic control unit having configurable line termination

A technology of electronic control unit and line terminal, applied in the direction of electrical components, electrical digital data processing, baseband system, etc., which can solve the problems of limited application and high implementation cost

Inactive Publication Date: 2015-02-25
PEZHO SITROEN AUTOMOBILS SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This solution has thus proven to be of limited application and its implementation costly

Method used

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  • Electronic control unit having configurable line termination
  • Electronic control unit having configurable line termination
  • Electronic control unit having configurable line termination

Examples

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Embodiment Construction

[0029] refer to Image 6 , which shows a communication network according to a preferred implementation of the present invention. The communication network consists of two signal transmission lines L H and L L At least one transmission line is formed and a plurality of electronic control units ECUAUTO, ECUT-1, ECUT2, ECU connected to the signal transmission line. In the example shown, the network comprises: an electronic control unit ECUAUTO with configurable line terminations, two electronic control units ECUn and ECUT2 with non-configurable line terminations according to two embodiments and a multi- An electronic control unit ECU. For a control unit with non-configurable line terminations, the first embodiment ECUn comprises, in addition to the calculation unit μθτ-ι, two resistors RT-IA and RT-IB connected in series and between the two resistors in series Between the equipotential capacitance CTi and the reference potential. The second embodiment ECUT2 includes two sign...

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PUM

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Abstract

An electronic control unit (ECUAUTO) having a configurable line termination for a digital communication network having at least two signal transmission lines (LH, LL), said electronic control unit comprising a line termination (RTA, RTB, CT) essentially defined by an equivalent termination resistance capable of connecting the signal transmission wires to each other, a line termination switching device (muC, SWH, SWL, BL2) for activating the line termination, characterised in that the electronic control unit further comprises a device (muC, Vref1, Vref2, SWPOL_H, SWPOL_L) for determining the presence of other line terminations on the communication network and for self-adapting to control the activation of the line termination on the basis of the presence or otherwise of other line terminations on the communication network.

Description

technical field [0001] The invention relates to an electronic control unit with line terminals, and a digital communication network comprising such an electronic control unit, enabling electrical equipment or subassemblies of electrical equipment to communicate with each other and with a reduced number of wires. Such communication networks are used in applications such as motor vehicles, industrial plants, railways, military or consumer electronics. Background technique [0002] Certain digital communication networks include line terminations that are used to ensure impedance matching of the network and compliance with regulations of the network topology. For example, the communication network CAN HS comprises two line terminations usually located on the furthest network node. figure 1 An example of the topology of such a network is shown. A bus 10 interconnects a plurality of electronic control units ECU_A, ECU_B, ECU_C and ECU_D, two of which (ECU_A, ECU_B) are equipped ...

Claims

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Application Information

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IPC IPC(8): H04L25/02G06F13/40
CPCH04L25/0278H04L25/0298G06F13/4086
Inventor J·M·戴诺N·莫朗
Owner PEZHO SITROEN AUTOMOBILS SA