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Avionics system including a controller and at least one peripheral device connected by common lines for power and data

A technology of avionics systems and peripheral equipment, applied in the field of avionics systems, can solve problems that are difficult to complete, CPL technology is not applicable to avionics systems, and does not meet the EMC constraints of the aircraft environment.

Active Publication Date: 2014-10-29
SAGEM DEFENSE SECURITE SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However CPL technology is very polluting in terms of radiation and therefore does not comply with the EMC constraints of the aircraft environment
In addition, it is difficult to complete the rationalization of DO254 for complex commercial components (COTS components: commercial off-the-shelf)
[0010] thus proving that CPL technology is not suitable for avionics systems

Method used

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  • Avionics system including a controller and at least one peripheral device connected by common lines for power and data
  • Avionics system including a controller and at least one peripheral device connected by common lines for power and data
  • Avionics system including a controller and at least one peripheral device connected by common lines for power and data

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Experimental program
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Embodiment Construction

[0035] refer to figure 1 , the central controller C is shown connected to one or more peripheral devices P via a power line L, usually a pair of wires 1 -P N .

[0036] The size of the manufacturing line L is firstly based on its low frequency characteristics and its ability to withstand high voltages and important currents. In addition, routing constraints can force two conductors to be associated in twisted pairs, without needing to be shielded, achieving an iterative impedance of known value, typically between 50 and 300 ohms.

[0037] More precisely, the peripheral device P 1 -P N It is connected to the wire L through the connection interface Ir.

[0038] The central controller C comprises a DC or AC power transmitter 1, preferably insulated to comply with aircraft builder recommendations in terms of resistance to the effects of lightning.

[0039] As detailed later, the central controller C implements:

[0040] - providing e.g. a high level continuous voltage (e.g....

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Abstract

According to a first aspect the invention relates to a device forming a central controller (C) intended to be linked to a remote peripheral (P1-PN) by way an electrical power line (L), comprising a power transmitter (1) and a low-pass litter (CC-BF) arranged between the power transmitter and the electrical line, as well as means for transmitting / receiving data (3) in baseband and a high-pass filter (CC-HF) arranged between the data transmission / reception means and the electrical line, the electrical line being of the kind mutualized for the transmission of power at low frequency from the central controller to the remote peripheral and for the simultaneous bidirectional transmission of data in baseband at high frequency between the central controller and the remote peripheral. The invention also relates to a remote peripheral (P1-PN) as well as to the system comprising a central control linked to one or more remote peripherals by an electrical line mutualized for the transmission of power and of bidirectional data simultaneously.

Description

technical field [0001] The technical field of the invention is avionics. More specifically, the present invention relates to an avionics system that includes a central controller and one or more remote peripheral devices connected to the central controller by power lines. Background technique [0002] Today's avionics systems include increasingly intelligent remote peripherals of the sensor or actuator type. They involve special critical flight control equipment, such as electric actuators, which are not only controlled by the central controller, but also provide reports to the central controller. [0003] It is necessary to have a simultaneous two-way communication channel ("full-duplex") between the central controller and the remote peripherals so that on the one hand the central controller can send its commands and instructions to the remote peripherals and on the other hand the peripherals can Feed its report back to the central controller. [0004] The exchange of da...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B3/54H04B3/56H04L25/02
CPCH04B3/56H04B3/54H04B2203/5491
Inventor F·吉洛特J-M·库尔泰耶
Owner SAGEM DEFENSE SECURITE SA