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Communication system and method

A technology for communication systems and communication equipment, applied in the field of communication systems, can solve the problems affecting the maximum possible distance of power supply and communication equipment, causing problems, etc., and achieve the effect of reducing demand and reducing power requirements

Inactive Publication Date: 2012-07-18
COMMONWEALTH SCI & IND RES ORG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is obviously problematic where power is expected to be supplied over longer distances
In addition, such communication equipment for transmission still requires a considerable amount of power thus affecting the maximum possible distance between the power supply and the communication equipment, and the range of applications

Method used

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  • Communication system and method
  • Communication system and method
  • Communication system and method

Examples

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Embodiment Construction

[0046] According to one embodiment of the present invention, there is provided figure 1 The communication system 10 shown in FIG. 1 includes at least one first communication device 12 adapted to receive power via an optical fiber 14 and located within a first zone 16 to communicate with a second zone 18 . The system is used in underground coal mine applications whereby the first zone is below the surface and in the hazardous zone of the mine and the second zone is above ground in the non-hazardous zone.

[0047] The communication device 12 includes a user interface 20 for communicating information to a user (not shown) and modulates the received optical carrier signal to include the communication information from the user interface 20 and forwards it to the second zone 18 (i.e., at the the light modulator 22 of the second communication device in the ground). Optical modulator 22 supports an intrinsically safe design because it reduces the power requirements of device 12 and t...

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Abstract

A communication system including: a first communication device located in a first zone; a second communication device located in a second zone for generating an optical carrier signal; and at least one optical fibre connected to the first communication device for supplying power for operation of the first communication device and for supplying the optical carrier signal from said second zone, wherein the first communication device includes: a user interface for inputting information; and an optical modulator for modulating the optical carrier signal to include information input with said user interface and forwarding the modulated signal via the at least one optical fibre to the second communication device.

Description

technical field [0001] The present invention relates to communication systems and methods. Background technique [0002] Communication devices are typically powered from local power sources and / or transformers. In certain applications, however, it may be desirable to supply power remotely. Such applications include low power environments or hazardous environments. [0003] Examples of hazardous environments include coal mines where flammable gases such as methane occur naturally, and in oil refineries, chemical plants, gas plants, or other places where flammable gases or vapors may be present. Other hazardous environments include areas where explosives may be stored or where high powered transmitters may operate. In such environments, it may be recommended or required to apply safety measures to electronic devices to ensure that they are intrinsically safe from explosion or fire. One such safety measure is to operate electronic devices at low power levels to reduce the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/14H04B10/28H04B10/43
CPCH04B10/807
Inventor G·A·艾尼克D·W·海因斯沃思L·G·芒迪
Owner COMMONWEALTH SCI & IND RES ORG