FR2644310A1 - SYSTEM PROVIDING AVAILABILITY OF DATA FOR COMPUTER TERMINALS TRANSMITTED BY LIGHT WAVEGUIDES - Google Patents

Abstract

In an installation 1 ensuring the availability of data transmitted by light waveguides, a converter 4 and a low voltage DC power supply 10 are housed inside a common housing 2, with a view to incorporation into a installation socket, in a cable duct, in a buried box or at a similar location, a connection socket 5 being provided, for a terminal or similar device, on the side of the housing 2 which faces the user.

Description

INSTALLATION ENSURING THE AVAILABILITY OF DATA FOR

  COMPUTER TERMINALS, TRANSMITTED BY GUIDES

LIGHT WAVES

  The present invention relates to an installation as-

  concerning the availability of data transmitted via

  diary of light waveguides, having a converted

  light signals into electrical and signal signals

  electrical signals, with power supply

in continuous low voltage.

  In addition data transmission techniques

  in addition currently used, either within integrated networks

  laughing at data users such as labs

  research roofs or similar establishments,

  In order to transmit data remotely in the public network, which is being implemented for this purpose, advantage is taken of the large transmission amplitude and the large

  range of possibilities for transmission via

  medium of light wave guides. It is then possible to reach data transmission speeds exceeding

  Mbps. Light waveguides are sheltered from

  electromagnetic fluences exerted from the outside, for example-

  ple by thunderstorms, they are generally insensitive to humi-

  deity, etc. The start and end of such a transmission raises a problem because, on the transmission paths, electrical signals must be converted into light signals for the emission area, or light signals must be respectively converted into electrical signals for the

  reception area. In addition to the problem raised by the conver-

  Another problem is that the

  converters may be subject to disturbing pulses

  these coming, for example, from the supply network

  rant. Therefore, the devices must be protected from overvoltages.

  In addition, these converters require power supplies.

  in direct voltages, for example direct voltages of 12 V or 5 V, which are made available either by the data interface junction, directly from the connected terminal, or by means of transformers which are

  connected to a socket as a specific final part.

  The disadvantage of the DC voltage supply from the computer, by means of data conductors,

  lies in the uncertain nature of dietary

  rant; in the most unfavorable case, it can occur

  a break in the data flow. If transforma-

  Separate parts are used as plugged-in components, generally heavy and relatively expensive pluggable devices which, when plugging is poor, may fall out of the socket or be pulled out by people not allowed, etc. It is also known to produce light wave converters in the form of separate devices, either as plug-in adapters or with integration in

  multiplexers, which raises the problem of a possibility

  rational installation of these devices. Plugging relatively large devices into data outputs

  of a computer is then basically linked to pro-

  particular problems due to the fact that such a connection is generally not very stable from the mechanical point of view, and that it is for example impossible to place the terminal against a wall. The object of the invention is therefore to provide a solution which avoids the problematic points described above,

  in which case, in particular, not only the data from

  from a network of light wave guides can be

  made available at the terminal, computer or user

  another type of data switcher, but the converter

  also provides an optimal supply of

  current, with possibility of protection against overvoltage.

  3, In accordance with the invention, with an installation of the type mentioned in the introduction, this object is achieved by the fact that the converter and the low-voltage power supply continue

  are housed inside a common housing, for the purpose of

  corporation in an installation outlet, in a pass channel

  cables, in a buried box or in a similar location

  re, a connection socket (interface junction) being pre-

  view, for a terminal or similar device, of the box side

  tier which is turned towards the user.

  Thanks to the installation according to the invention and using simple means, the light wave converter is not

  no longer produced in the form of a separate housing, with the in-

  inherent disadvantages mentioned above, but represents part of the technical installation. Therefore, it can be designed as an "intelligent" installation socket, which is realized as a recessed socket in the ground, wall-mounted socket or recessed socket in the wall, or as a socket for a cable entry channel, or even as

  that "buried box". Under these conditions, the installation

  lation directly includes the light wave converter

  its materializing a component, for example in a technique

  than hybrid, and it also constitutes data capture

  nees, for example an ADO8 socket, a CAT socket, a socket

  coaxial, a TAE connection socket, a pin socket

  melés, etc. The connection of the light waveguides (these are, in general, two such guides) can be directly

  secured on the light waveguide plate, inside

  connector, for example by means of SMA plugs, mini-BNC or similar plug-in components for light waveguides. This provides, directly, a

  DC low voltage power source for con-

  greenizer. In one embodiment of the invention, it is proposed that sockets for connection to a 220 V alternating current network are provided inside the common housing. In the Federal Republic of Germany, for example, these connection sockets can be made in the form

  "schuko-stecker" (sockets with protective contacts).

  A particular embodiment of the invention consists in that an anti-surge protection device is provided, inside the housing, in order to protect the 220 V network; it is therefore particularly advantageous that, in addition to the 220 V current supply, the overvoltage protection device is also produced as

  that electronic circuit protection device

  low voltage power supply.

  Thanks to these characteristics, the surge protection

  Zion is provided not only for the 220 V network, but also for the low voltage supply, indoors

of a common device.

  Naturally, the arrangement in space is designed so that incorporation into a socket is possible without problems, i.e. the depth of incorporation is

less than 32 mm.

  At this stage, it will also be observed that, in addition to a re-

  220 V bucket, a 250 V or 110 V network can, of course

  taut, to be similarly equipped with the invention.

  The overvoltage protection has the function of protecting

  manage an overvoltage supply to the computer

  rant (socket with protective contacts). It also allows,

  in special cases, to exercise simultaneously a function

  filtering in order to attenuate disturbing pulses

  high frequency. In accordance with the invention, the overvoltage protection component is also designed in the form of an intelligent installation component, for mounting recessed into the ground, as a wall light or by other techniques. An additional rectifier, provided

  an electronic circuit for low voltage supply

  of the light wave converter, is installed

  direct ximity, or else forms an integral component

  from the socket, as mentioned above.

  In another embodiment, the invention proposes that the 220 V anti-overvoltage protection device, and the DC 5 V anti-overvoltage protection device, be provided in a cascade connection; and / or that the surge protection device is additionally equipped with temperature monitoring and / or an optical display unit, visible towards the outside in

failure.

  As another embodiment of the invention also proposes, it is also advantageous to provide in a

  common box, in addition to the data socket associated with the conversion

  light wave weaver, a plug with protective contacts and / or a 5 V DC plug and / or connection areas for the supply, from the outside, of the ends of the

light wave guides.

  In addition to the possibility of making all the essential constituent parts, in a single case,

  the size of a conventional outlet, the elements can also

  if, in accordance with the invention, be arranged in juxtaposition

  in a rail; in this case, as the invention also provides

  It is particularly recommended that the boxes of the various connection sockets be made in the form of plug-in modules in order to form a strip.

  connection, or the like.

  The invention will now be described in more detail by way of non-limiting examples, with reference to the accompanying drawings in which:

  Figure 1 is a side elevation of an installation

  tion according to the invention; Figure 2 is a plan view of a possibility of connection in principle, and a design of the invention showing a modified embodiment; Figure 3 is a plan view of plug-in modules according to the invention; and Figure 4 is a circuit diagram of the protection

  anti-overvoltage of the connection socket (s).

  The installation generally designated by 1 in FIG. 1 is produced, in this case, in the form of a recessed socket

  in the ground, the electronic components not being illus-

  very in their original mode of integration, to allow easier identification. A printed circuit board 3, placed on a support ring 2 (common box) of the installation 1, is associated with an electronic circuit 4 wave converter

  luminous, symbolically illustrated, to a socket 5 for connection

  terminal, computer or similar device, as well as an optical display unit 6 for the device

surge protection.

  Another printed circuit board 8, installed on

  spacers 7, carries a protective device 9

  220 V anti-overvoltage, as well as an electronic circuit

  10 with an overvoltage protection device, for low voltage measuring for example 5 V. The electronic circuit 4 is connected to the voltage supply 10

  continuous 5 V via a power supply conductor

11.

  Connections 12 for the light waveguides are provided on the upper face of the printed circuit board 8; on its underside, this printed circuit board carries fittings 13 for the power supply of 220 V.

  Figure 2 shows a separation in space, inside

  inside of three boxes, individual functions of the installation identified, in this case, by; the respective elements, each equipped with a support ring 2a, 2a 'and 2a "are also produced, for example, as sockets

embedded in the ground.

  The elements identical to those in FIG. I bear the same numerical references, to which the lower case a has been added. In this case, the 220 V overvoltage protection and the 5 V supply unit also protected (that is to say elements 9a and 10a) are associatively arranged on the support ring 2a. A socket 14 with protective contacts is provided in the center and, on the far right

  in the example illustrated, a converter 4a of light waves

  ses is fitted, on the support ring 2a ", with fittings 12a for fiber optic conductors 15 and fittings for

a low voltage conductor 11a.

  Figure 3 shows configurations and layouts

  different data and flow supply fittings

  rant. The upper row comprises, in the form of juxtaposed plug-in modules, external sockets 16 for connection of light waveguides, sockets 5b for connection of a terminal, a socket 14b with protective contacts and indicator lights 6b for the surge protection, for example green in color for correct operation, and

  red for failure. Similar elements

  res are provided in the second row, the connection of the guides

  of light waves being however, in this case, respective-

  embedded in the ground or in the wall as in the example

  ple of embodiment according to Figure 2; and identical elements

  ticks carry the same reference indices, assigned the

  "premium" sign. Finally, in the third row, we have illus-

  very an arrangement comprising a connector 16b of the waveguides

  luminaires and a 5b "data connection, on a plate-

  te, in association with a 14b "socket with protective contacts

and 6b "indicator lights.

  FIG. 4 finally shows, by a simple illustration

  plan, an assembly diagram of the protection device for the different sockets. A socket 14c with protective contacts, shown in simplified form, is then fitted with a device 9c for surge protection; an overvoltage protection c of the light wave converter acts on an element 4c which has, for example, a junction

  24V 5c interface. 12c fittings of the waveguides

  leafminers are also symbolized on the drawing. In this way, a circuit thus equipped has a protected socket, as well as a protected 24 V interface junction. Naturally, the described embodiments of the invention can still undergo numerous modifications without departing from the basic idea. For example, it is possible to provide on a common support ring, in a

  compact embodiment, the anti protection component

  overvoltage fitted with 220 V fittings, on a

  printed circuits, in association with a wire component-

  trage (for example a low pass filter), to obtain

  a compactly protected socket, optional displays

  ques can still be additionally provided in this case.

  It goes without saying that many modifications can

  can be brought to the installation described and shown,

  without departing from the scope of the invention.

-R EV E N D I C AT I 0 N S-

  1. Installation ensuring the availability of data transmitted via light waveguides, having a converter of light signals into electrical signals and of electrical signals into light signals, with continuous low voltage supply, installation ca-

  characterized by the fact that the converter (4) and the power supply

  tion (10) in low continuous voltage are housed inside a common box (2), for incorporation in an installation socket, in a cable duct, in a buried box or in a similar location, a connection socket (5) (interface junction) being provided, for a terminal or similar device, on the side of the box which is

user-oriented.

  2. Installation according to claim 1, characterized in that sockets (14) for connection to an alternating current network of 220 V are provided inside the

common housing (2).

  3. Installation according to claim 1 or 2, character-

  laughed at by the fact that a device (9) for protection against

  overvoltage is provided, inside the box (2), in order to protect the 220 V network. 4. Installation according to claim 3, characterized in that, in addition to the 220 V current supply, the device (9) for overvoltage protection is also realized as a circuit protection device (10)

  electronic rectifier of the low voltage supply.

  5. Installation according to claim 4, characterized

  by the fact that the anti-surge protection device (9)

  220 V, and the anti-protection device (10)

  overvoltage of 5 V in direct current, are provided according to a

cascade connection.

  6. Installation according to claim 3 or one of the following, characterized in that the device (9, 10) surge protection is additionally equipped

26 4 4310

  temperature monitoring and optionally, or alternatively, an optical display unit (6) visible towards

the outside in the event of a breakdown.

  7. Installation according to claim 3 or one of the following, characterized by the presence in a common box, in addition to the socket (5) of data associated with the converter (4) of light waves, of a socket ( 14} with protective contacts

  and possibly, or as a variant, of a direct current socket

  bare of 5 V and possibly, or alternatively, connecting zones

  cord (16) for the arrival, from the outside, of the ends

light wave guides (15).

  8. Installation according to claim 3 or one of

  following, characterized in that the boxes of the di-

  verses connection sockets (5, 14, 16) are made, of a

  in a manner known per se, in the form of plug-in modules

  cables to form a connection strip, or ele

similar.