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Electronic Control Units with Configurable Line Terminations

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

Inactive Publication Date: 2018-01-09
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 Units with Configurable Line Terminations
  • Electronic Control Units with Configurable Line Terminations
  • Electronic Control Units with Configurable Line Terminations

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] refer to Figure 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 sig...

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PUM

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Abstract

The invention relates to an electronic control unit (ECUAUTO) with configurable line termination for a digital communication network with at least two signal transmission lines (LH, LL), said electronic control unit comprising mainly The line termination (RTA, RTB, CT) is defined by the connected terminal equivalent impedance, and the line termination switching device (μC, SWH, SWL, BL2) is used to activate the line termination, and it is characterized in that the electronic control unit also includes a For determining the presence of other line terminations on the communication network and means for adaptation (μC, Vref1, VREF2, SWPOL_H, SWPOL_L) to control the activation of line terminations depending on whether other line terminations exist 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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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/02G06F13/40
CPCG06F13/4086H04L25/0278H04L25/0298
Inventor J·M·戴诺N·莫朗
Owner PEZHO SITROEN AUTOMOBILS SA