Arrangement for the exchange or at least reception of electromagnetic waves

Abstract

Arrangement for the exchange or at least reception of electromagnetic waves, wherein an antenna arrangement is arranged on a rail-guided carriage, characterized in that the antenna arrangement comprises an antenna rod (4) arranged parallel to a flat bottom (5) of a metallic trough, the side walls of which extend from the bottom (5), wherein a leaky waveguide is laid along the rail and the antenna rod (4) is arranged parallel to the leaky waveguide, wherein the leaky waveguide has regularly spaced recesses, wherein the bottom (5) of the tub and the side walls (6) of the tub are formed by bending a correspondingly punched sheet or a correspondingly cut metal foil, whereby the edges of the resulting tub are not closed.

Description

The invention relates to an arrangement for exchanging or at least receiving electromagnetic waves.DE 10 2007 033 652 A1 discloses a system for exchanging data.U.S. Pat. No. 4,054,876 A discloses a cavity antenna as the closest prior art.A transmission series is known from DE 10 2007 033 652 A1.From DE 102 60 070 A1, from DE 103 51 532 A1, from DE 10 2006 049 588 A1, from DE 10 2008 031 153 A1, from DE 10 2008 025 073 A1, a system for exchanging data is known in each case.DE 93 12 251 U1 discloses a measuring device for measuring the level.A fill level measuring device is known from DE 100 23 497 A1.DE 100 64 812 A1 discloses a device for emitting high-frequency signals.A track-guided transport system is known from DE 103 48 259 A1.A monitoring device is known from DE 20 2005 012 696 U1.The invention is therefore based on the object of developing an arrangement for the exchange or at least reception of electromagnetic waves, wherein an improved coupling is to be achieved.According to the invention, the object is achieved in the arrangement for exchanging or at least receiving electromagnetic waves according to the features specified in claim 1.An important feature of the invention in the arrangement for exchanging or at least receiving electromagnetic waves is that an antenna arrangement is arranged on a rail-guided carriage, wherein the antenna arrangement comprises an antenna rod which is arranged parallel to a planar base of a metallic trough, the side walls of which extend from the base.It is advantageous here that data can be exchanged and a directional effect can be achieved by means of the trough.In an advantageous embodiment, the side walls are arranged perpendicularly on the floor and / or extend into that half space in which the antenna rod is located, in particular wherein the half space is produced by separating the entire space by means of the plane containing the floor. It is advantageous here that the directional effect can be generated in the direction of the leaky waveguide.In an advantageous embodiment, the antenna rod is arranged electrically insulated from the trough. It is advantageous in this case that the voltage between antenna rod and trough can be used as an input signal for an electronic circuit which demodulates and / or decodes the data.In an advantageous embodiment, the distance between the antenna rod and the base of the trough is between 40% and 60% of that side length of the base, in particular 50%. It is advantageous that an optimum coupling can be achieved.In an advantageous embodiment, the length of the antenna rod is between 40% and 60% of the length of the side wall of the trough parallel to the antenna rod, in particular 50%. It is advantageous that an optimum coupling can be achieved.In an advantageous embodiment, the diameter of the antenna rod is at least ten times smaller than its length. It is advantageous that an optimum coupling can be achieved.In an advantageous embodiment, the side walls and / or the antenna rod are manufactured from copper-containing material. It is advantageous that particularly low ohmic losses occur.In an advantageous embodiment, the side walls are substantially as high, i.e. extend away from the base, as corresponds to the distance of the antenna rod from the base. It is advantageous in this case that optimum directivity can be achieved with good coupling to a leaky waveguide.According to the invention, a leaky waveguide is laid along the rail and the antenna rod is arranged parallel to the leaky waveguide. It is advantageous that a particularly advantageous coupling can be achieved.According to the invention, the leaky waveguide has recesses which are regularly spaced apart from one another. It is advantageous here that a small portion of the radiation guided in the conductor emerges and, in particular in the near field, the antenna rod can be coupled to this radiation, so that reception of electromagnetic waves leads to an evaluable signal voltage at the antenna rod.In an advantageous embodiment, the frequency of the exchanged electromagnetic waves is between 1 and 10 GHz, in particular between 2 and 6 GHz. It is advantageous here that a high data stream can be exchanged.In an advantageous embodiment, a primary conductor to which a medium-frequency current is applied is laid along the rail, to which a secondary winding of the carriage is provided in an inductively coupled manner, a capacitor being connected in parallel and / or in series in such a way that the associated resonant frequency substantially corresponds to the medium frequency, in particular wherein the medium frequency has a value between 10 and 500 kHz, in particular between 20 and 40 kHz. It is advantageous here that the carriage, in particular its electric drive, can be supplied in contactless fashionFurther advantages are evident from the dependent claims. The invention is not limited to the combination of features of the claims. The skilled person will be familiar with further meaningful combination possibilities of claims and / or individual claim features and / or features of the description and / or of the figures, in particular from the task and / or the task which arises by comparison with the prior art.The invention will now be explained in more detail with reference to the drawings:The principle of the invention is schematically outlined in FIG. 1. An antenna arrangement for radio wave exchange or at least reception of radio waves of a leaky waveguide is shown here in an oblique view with the housing cover removed.The arrangement is formed by the housing lower part 7, which is preferably made of plastic, and a housing upper part, not shown, which is likewise preferably made of plastic and the housing lower part 7 closes off in a box-forming manner. Here, elevations 1 are provided on the lower housing part 7, into which projections of the upper housing part can be clipped and thus connected in a positive-locking mannerA trough made of metallic material is arranged in the lower housing part 7, wherein the base 5 of the trough and the side walls 6 of the trough are formed by bending a correspondingly stamped sheet metal or a correspondingly cut metal foil. Thus, the edges do not have to be closed.In a side wall of the housing bottom part an antenna rod is screw-connected by means of a nut 3 which cooperates with a screw thread. The antenna rod 4 is metallic and is preferably provided with an insulation 2 toward the nut 3. The screw connection is likewise passed through a side wall of the trough. It is important that the outer conductor of the antenna plug is electrically fixedly connected to the metallic trough by the screw thread.The antenna rod 4 has approximately half the length of the side wall of the trough extending in the direction of the antenna rod. A length between 40% and 60% of the length of the side wall is preferred.In further embodiments according to the invention, the material of the trough and of the antenna rod 4 is in each case copper.The arrangement is arranged below a rail-guided carriage, wherein a leaky waveguide is arranged along the rail. Electromagnetic waves are guided therein which have a frequency between 1 and 10 GHz, preferably between 2 and 6 GHz. The leaky waveguide has recesses on its outer circumference, through which a part of the radiation exits. The recesses are either formed longitudinally to the line direction, i.e. for example as a slot extending over the entire length of the leaky waveguide, or transversely or obliquely to the line direction. In this case, it is advantageous to provide small transverse slots at a regular spacing from one another. The shape of each recess can be provided on the one hand as a rectangle or on the other hand as an ellipse or a shape that is otherwise rounded.The antenna rod 4 is provided parallel to the rail direction and thus also to the leaky waveguide direction and is arranged at the smallest possible distance. However, a certain minimum distance is necessary because of the avoidance of collision as a result of dirt particles or occurring tolerances.The nut 3 establishes an electrical connection between the outer conductor of the connector plug and the side wall 6 of the metallic trough.By means of the trough, a certain directional effect is achieved which also allows sufficient coupling to be achieved at this greater distance, i.e. the minimum distance.The distance between the antenna rod 4 and the bottom 5 of the trough corresponds to approximately half the length of the antenna rod 4, preferably at least between 40% and 60% of the length of the antenna rod 4.List of reference characters1 Elevation 2 Insulation 3 Nut 4 Antenna rod 5 Base of the trough 6 Side wall of the trough 7 Housing lower part, in particular made of plastic

Claims

Arrangement for exchanging or at least receiving electromagnetic waves, wherein an antenna arrangement is arranged on a rail-guided carriage, characterized in that the antenna arrangement comprises an antenna rod (4) which is arranged parallel to a planar base (5) of a metallic trough, the side walls of which extend from the base (5), wherein a leakage waveguide is laid along the rail and the antenna rod (4) is arranged parallel to the leakage waveguide, wherein the leakage waveguide has recesses which are regularly spaced apart from one another, wherein the base (5) of the trough and the side walls (6) of the trough are formed by bending a correspondingly stamped sheet metal or a correspondingly cut metal foil, wherein edges of the trough formed therefrom are not designed to be closed.Arrangement according to claim 1, characterised in that the side walls are arranged perpendicularly on the base (5) and / or extend into the half-space generated by the plane containing the base (5), in which the antenna rod (4) is located, in particular wherein the half-space is generated by separating the entire space by means of the plane containing the base (5).Arrangement according to at least one of the preceding claims, characterized in that the antenna rod (4) is arranged electrically insulated from the trough.Arrangement according to at least one of the preceding claims, characterized in that the outer conductor of the antenna plug is electrically connected to the metallic trough.Arrangement according to at least one of the preceding claims, characterized in that the distance between antenna rod (4) and base (5) of the trough is between 40% and 60% of the side length of the base (5), in particular 50%.Arrangement according to at least one of the preceding claims, characterized in that the length of the antenna rod (4) is between 40% and 60% of the length of the side wall (6) of the trough parallel to the antenna rod (4), in particular 50%.Arrangement according to at least one of the preceding claims, characterized in that the diameter of the antenna rod (4) is at least ten times smaller than its length.Arrangement according to at least one of the preceding claims, characterized in that the side walls and / or the antenna rod (4) are manufactured from copper-containing material.Arrangement according to at least one of the preceding claims, characterized in that the side walls are as high, that is to say extend away from the base (5), as corresponds to the distance of the antenna rod (4) from the base (5).Arrangement according to at least one of the preceding claims, characterized in that the frequency of the exchanged electromagnetic waves is between 1 and 10 GHz, in particular between 2 and 6 GHz.Arrangement according to at least one of the preceding claims, characterized in that a primary conductor to which a medium-frequency current is applied is laid along the rail, to which primary conductor a secondary winding of the carriage is provided in an inductively coupled manner, a capacitor being connected in parallel and / or in series in such a way that the associated resonant frequency substantially corresponds to the medium frequency, in particular wherein the medium frequency has a value between 10 and 500 kHz, in particular between 20 and 40 kHz.

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