DE102012006412A1 - Data transmission system for use with rail-guided vehicle, has monorail portions with slotted waveguide profile having opening for data transmission, where radio signals are supplied to slotted waveguide profile by access point - Google Patents

Abstract

The data transmission system has a profiled rail section (4) with monorail portions that are provided with a slotted waveguide profile having an opening for data transmission using radio waves. The radio signals are generated by an access point so as to supply to the slotted waveguide profile of respective monorail portions. A split-up signal component of the radio signals is linked by an antenna (1) of vehicle (2) arranged in the waveguide profile.

Description

The invention relates to a transport system.

It is known in rail systems to perform a data transmission between a stationary unit and rail-mounted systems via radio waves. However, disturbing crosstalk occurs on nearby sections.

The invention is therefore based on the object, the data transmission in a transport system comprising a rail system to further develop.

According to the invention, the object is achieved in the transport system according to the features specified in claim 1.

Important features of the invention in the transport system are that it has a rail system and a vehicle arranged movably thereon, in particular rail-guided vehicle,
the rail system having profiled rail parts each having a slot waveguide section of a slot waveguide,
wherein a vehicle has at least two antennas which protrude into the opening of the respective slot waveguide section for data transmission by means of radio waves,
wherein signals generated by an access point are supplied to splinters, so that a plurality of rail sections, in particular the slot waveguide sections of the respective profiled rail parts of the rail sections, can be supplied from the access point.

The advantage here is that only a small number of access points is necessary for the rail system. Because of the splitting several hochfrequenzmäßig decoupled and thus independent rail sections are supplied from only a single access point.
wherein the rail system has profile rail parts, which each have a slot waveguide,
In an advantageous embodiment, a vehicle has at least two antennas, which protrude into the opening of the slot waveguide for radio transmission,
wherein the antennas are spaced apart in such a distance A in the rail direction, that an uncovered radio link area of length B in the rail direction is bridged, in particular so the distance A is greater than the length B.

The advantage here is that on the one hand slot waveguide for almost closed leadership of the radio waves can be used and thus a disturbing crosstalk can be avoided and also with radio waves unserved areas are supplied by the bridging arrangement of the two antennas.

The slot of the slot waveguide runs in the rail direction.

In an advantageous embodiment, the uncovered radio link area comprises a region of a switch, in particular, it has no slot waveguide and / or a switch, which has to be crossed by the vehicle switch piece, which has no radio-supplied slot waveguide, in particular no slot waveguide. The advantage here is that the points pieces do not have to be designed with slot waveguide and / or not radio must be powered.

In an advantageous embodiment, the opening, in particular the slot, the slot waveguide and / or the slot waveguide is arranged track-symmetrically,
in particular wherein the antennas are each arranged centrally to the opening, in particular slot, of the slot waveguide and / or to the slot waveguide. The advantage here is that the antenna remains guided during the movement in the middle of the slot. Thus, an uninterrupted data transmission is possible even when cornering.

In an advantageous embodiment, the vehicle has a front and a rear module, which in each case has a wheel of the vehicle, in particular drive wheel or carrier wheel of the vehicle,
wherein a connecting means is connected via a pivot bearing with the front and / or via a pivot bearing with the rear module. The advantage here is that the antenna is slightly deflected when cornering or slightly deviations from the rotational axis position slightly from the center. Thus, an uninterrupted data transmission is possible - even when cornering. In addition, a stationary in the slot waveguide antenna device, the high-frequency electromagnetic signals, ie radio waves coupled in the rail direction and against the rail direction, bridged, whereby even when driving over this point undisturbed data transmission is possible.

In an advantageous embodiment, an antenna is arranged in the region of an axis of rotation of the vehicle, in particular in the region of an axis of rotation of a pivot bearing of the vehicle,
in particular, wherein the axis of rotation is oriented perpendicular to the rail direction and perpendicular to the shaft axes of lateral guide wheels of the vehicle. The advantage here is that the antenna at Positioning in the axis of rotation remains central to the opening in the slot waveguide.

In an advantageous embodiment, a respective antenna is fixedly connected to the respective module. The advantage here is that the antenna is "hard" out in the middle of the slot of the slot waveguide. A complex moving mechanical guidance of the antennas is thus unnecessary.

In an advantageous embodiment, the profiled rail part has an upper and a lower cheek connecting wall support portion on which a holding part is clipped, in which a primary conductor or a sliding conductor is clipped to power the vehicle,
in particular wherein the vehicle has a secondary winding which can be inductively coupled to the stationarily laid primary conductor and electrically connected in parallel or in series with a capacitance such that the associated resonant frequency substantially corresponds to the frequency of the alternating current fed into the primary conductor. The advantage here is that even with deviations from the position of strongest inductive coupling only a slight deterioration of the efficiency occurs.

In an advantageous embodiment, an antenna is arranged in the slot waveguide of a profiled rail part, which is connected to the profile rail part and high-frequency signals in the rail direction and counter to the rail direction in the slot waveguide can be coupled, in particular coupled. The advantage here is that the supplied rail track is increased, especially in comparison to a one-sided coupling of the radio waves.

In an advantageous embodiment, signals generated by an access point are supplied to splinters, so that a plurality of rail sections, in particular slot waveguides of the profile rail parts, can be supplied from the access point,
in particular wherein in each case a split-signal component of an arranged in the slot waveguide of the profile rail part antenna in the rail direction and against the rail direction is coupled into the slot waveguide. The advantage here is that large sections can be supplied with a small number of access points.

In an advantageous embodiment, the switch is made passive, in particular so by shifting a holding part depending on the shift position respective turnout piece can be activated, in particular wherein the activatable switch pieces are fixed to the holding part. The advantage here is that a simple switch is used and no radio wave supply is necessary in the area of the switch.

In an advantageous embodiment, a rolling area for lateral guide wheels is arranged on the profile rail part, in particular on the upper and lower cheek area, respectively,
and / or that a rolling area for a wheel, in particular carrying wheel and / or driving wheel, of the vehicle, is arranged on a cheek area of the profiled rail part. The advantage here is that a tracking on the rail part is executable. On the rail surface, a rolling area for wheels is provided, which introduce the weight of the vehicle in the rail part.

In an advantageous embodiment, a track transmitter, in particular bar code, is arranged on the profile rail part, which can be detected by a vehicle-mounted reading device, in particular a sensor, in particular wherein the track transmitter is arranged on a wall part of the profile rail part, in particular glued. The advantage here is that on the vehicle position determination is easily providable.

In an advantageous embodiment, an electric motor for driving a wheel of the vehicle is arranged on a module, in particular on the front module. The advantage here is that the module carries the engine and has a bearing for the motor-driven wheel, which acts as a drive wheel. In addition, lateral guide wheels are mounted on the module, so that the vehicle remains in the lane due to the lateral guidance.

In an advantageous embodiment, the profile rail part is a continuous casting, in particular an aluminum continuous casting. The advantage here is that a simple and cost-effective production of the rail part is made possible by means of continuous casting.

Further advantages emerge from the subclaims. The invention is not limited to the combination of features of the claims. For the skilled person, further meaningful combination options of claims and / or individual claim features and / or features of the description and / or figures, in particular from the task and / or posing by comparison with the prior art task.

The invention will now be explained in more detail with reference to schematic illustrations:

In the 1 a section of a rail system is shown, which is a switch 3 having.

In the 2 shows a cross section through the rail profile in the area of a traveling on the rail vehicle.

In the 3 an associated side view is shown.

In the 4 is a schematic representation of the coupling of high frequency in rail sections of the rail system shown.

As in 1 shown, the plant has rail parts on which a vehicle 2 is movable. It is also at least a passive switch 3 provided the vehicle 2 must cross. The soft 3 is moved by an actuator either in a first or second point position. By means of this method, the corresponding turnout piece to be activated is brought into position.

The profile rail 4 also has a slot waveguide profile 24 on the 2 is shown in more detail. In the outwardly open slot of the slot waveguide profile 24 protrudes an antenna 1 into, so that electromagnetic waves can be coupled and decoupled. At some points of the rail system stationary arranged means for coupling and / or decoupling of the waves are arranged.

Since in the rail direction in the region B of the switch of the slot waveguide has no stationarily arranged means for coupling and / or decoupling, no data exchange with the vehicle is executable.

Therefore, the vehicle points 2 in the rail direction at a distance A antennas 1 on, wherein the distance A is longer than the area B. Thus, a data exchange is also possible in the switch area, although the points pieces have no slot waveguide and only the outside of the turnout area located rail profile parts have Schlitzhohlleiterbereiche.

As in 2 clearly visible, is the slot waveguide area 24 in one piece on the profile rail part 23 formed. Thus, it is without additional effort together with the profile rail part 23 produced as a continuous casting.

In this case, the profile rail part 23 a central wall on which at its top and bottom Abrollbereiche for wheels of the vehicle 20 having.

On the one hand on the top of a Abrollbereich for a carrying wheel 22 arranged, which at least partially the weight of the vehicle 20 to the profile rail part 23 derives.

Laterally Abrollbereiche for the lateral guide wheels 21 of the vehicle 20 arranged. Also on the underside of such lateral guide wheels are rolling on Abrollbereichen, said Abrollbereiche at least partially the outer surface of the slot waveguide 24 represent.

The slot waveguide 23 is arranged track-symmetrically, thus has a plane of symmetry, which is centered to the left and right in the rail direction Abrollbereichen for the lateral guide wheels 21 is arranged. Thus, if a rolling area, for example the left rolling area, is mirrored for lateral guidance on a plane of symmetry, it moves into another rolling area, in particular the right rolling area.

This central arrangement of the slot waveguide area 24 to the rail track allows the vehicle to an antenna 25 is arranged, which is also centered to Schlitzhohlleiterberiech 24 , in particular centrally to the downwardly directed opening, so slot is arranged.

At the central wall of the profiled rail part 23 also undercuts are formed, so that a holding part 27 can be clipped, which is preferably made of plastic and in which primary conductor lines are clipped. In this case, the primary conductor is laid as an electrical loop, in which a medium-frequency alternating current is impressed. In this case, a frequency between 10 kHz and 1000 kHz is advantageous. Outstanding towards the vehicle is the leading part of the loop and closer to the wall, the return part of the loop can be clipped into the holding part 27 , The leading part, ie the lead, is placed in the clip-in area 28 for primary conductors, in particular line conductors, clipped in and the return part, ie return conductor, in the Einklipsbereich 29 for primary conductors, in particular line conductors.

On the vehicle, a secondary winding is provided, which is inductively coupled to the primary conductor, wherein the secondary winding such a capacitance is connected in parallel and / or in series, that the associated resonant frequency substantially corresponds to the frequency of the impressed in the primary conductor alternating current. Thus, energy is transferable with a high efficiency, especially in the case of deviations from the position of the maximum inductive coupling.

In addition, on the holding part 27 or alternatively on the profile rail part 23 arranged a marker, such as barcode, so that by means of a corresponding reader or sensor, a determination of the position of the vehicle in the rail system is executable. A preferred location for mounting the track transmitter in the alternative embodiment are the cheeks of the profile rail part 23 wherein the cheeks have the Abrollbereiche for the lateral guide wheels. The cheeks are designed to extend perpendicular to the rail direction and perpendicular to the axis of the lateral guide wheels, so that sufficient surface is available, where then the distance encoder can be applied, for example, is glued.

As in 3 shown, the vehicle has a front wheel, so the drive wheel 31 on which of an electric motor 30 is driven, and a rear wheel, as a mere carrying wheel 32 acts. In order to enable a passage through curves, the vehicle has a first rigid module, which is the electric motor 30 and on which the drive wheel 31 is stored. Another module includes the storage for the mere carrying wheel 32 , The two modules are connected via a connecting part 33 connected, wherein in the connecting region, a rotary bearing is arranged, whose axis of rotation perpendicular to the rail direction and perpendicular to the axis of the lateral guide wheels 21 is aligned. At the two modules is the respective antenna 25 fastened by means of a holding part 34 , Here is the antenna sticking out 25 into the opening of the slot waveguide in the area X inside. Preferably, the. Position of the entry centered to the support wheel or drive wheel 31 chosen, causing the antenna 25 in the area of the axis of rotation between module and connecting part 33 is arranged. Thus, when driving through curves is the antenna 25 always aligned in the middle of the opening and arranged. The further the antenna 25 is arranged away from the axis of rotation, the more it gives way when cornering from the opening of the slot waveguide 24 in the middle position.

As in 4 shown, the rail system has an access point 47 on, with a high-frequency signal for data transmission to splitter is transferable. This is done by the access point 47 Outgoing signal split several times over the in 4 shown splinters 46 so that the signal is applied to the various rail sections ( 40 . 41 . 42 . 43 . 44 . 45 ) is zuluhrbar. In 4 a sixfold splitting is shown. This is preferably done by a splitter 46 splitted signal in a rail of a stationary arranged centrally in the slot waveguide region arranged antenna device irradiated in two opposite directions. Thus, many track sections are from a single access point 47 , So even by a single associated radio modem, with the high-frequency signal for data transmission supplied.

This way is from an access point 47 a large area, so radio cell supplied, which frequent radio cell changes when moving the vehicles in the rail system can be avoided. By avoiding the interference-prone radio cell changes, the error rate during data transmission can be reduced.

By integrating the slot waveguide 24 in the lower cheek area of the rail profile part 23 Retrofitting of old systems without a slot waveguide can be carried out in a simple manner, without the vehicles having to be changed - with the exception of the antennas and data transmission means to be installed.

LIST OF REFERENCE NUMBERS

1

antenna

2

vehicle

3

switch

4

rail

20

vehicle

21

lateral guide wheels

22

carrier wheel

23

Shaped bar portion

24

Slot waveguide

25

antenna

26

lateral guide wheels

27

holding part

28

Clipping area for primary conductors, especially line conductors

29

Clipping area for primary conductors, especially line conductors

30

electric motor

31

drive wheel

32

carrier wheel

33

connecting part

34

Holding part for antenna

40

rail section

41

rail section

42

rail section

43

rail section

44

rail section

45

rail section

46

splinter

47

Access point

A

Distance of the antennas on the vehicle

B

Turnout area, so distance without communication

Claims (15)

Transport system, comprising a rail system and a vehicle arranged thereon, in particular rail-guided vehicle, wherein the rail system profile rail parts, each having a slot waveguide portion of a slot waveguide, wherein a vehicle has at least two antennas, which protrude into the opening of the respective slot waveguide section for data transmission by radio waves , characterized in that signals generated by an access point are supplied to splinters, so that a plurality of rail sections, in particular the Slot waveguide sections of the respective profile rail parts of the rail sections from the access point can be supplied. Transport system according to at least one of the preceding claims, characterized in that in each case a split-signal portion is coupled from an arranged in the slot waveguide portion of the profile rail part antenna in the rail direction and against the rail direction is coupled into the slot waveguide section. Transport system according to at least one of the preceding claims, characterized in that the antennas of the vehicle are spaced apart in such a distance A in the rail direction, that an uncovered radio link area of length B in the rail direction can be bridged, ie in particular the distance A is greater than the length B. . Transport system according to at least one of the preceding claims, characterized in that the uncovered radio link area comprises a region of a switch, in particular has no slot waveguide section and / or has a switch, which has to be driven over by the vehicle switch piece, which no radio-supplied slot waveguide section, in particular no slot waveguide section, having. Transport system according to at least one of the preceding claims, characterized in that the opening, in particular the slot, of the slot waveguide section and / or the slot waveguide section are arranged in a spur-symmetrical manner, in particular wherein the antennas are each arranged centrally of the opening, in particular slot, of the slot waveguide section and / or the slot waveguide section. Transport system according to at least one of the preceding claims, characterized in that the vehicle has a front and a rear module, each having a wheel of the vehicle, in particular drive wheel or carrier wheel of the vehicle, wherein a connecting means via a pivot bearing with the front and / or connected to the rear module via a pivot bearing. Transport system according to at least one of the preceding claims, characterized in that an antenna is arranged in the region of an axis of rotation of the vehicle, in particular in the region of an axis of rotation of a pivot bearing of the vehicle, in particular, wherein the axis of rotation are aligned perpendicular to the rail direction and perpendicular to the shaft axes of lateral guide wheels of the vehicle. Transport system according to at least one of the preceding claims, characterized in that on the respective module, a respective antenna is fixedly connected without an additional movable guide structures. Transport system according to at least one of the preceding claims, characterized in that the profiled rail part has an upper and a lower cheek connecting wall support region, on which a holding part can be clipped, in which a primary conductor or a sliding conductor can be clipped to the energy supply of the vehicle, in particular wherein the vehicle has a secondary winding which can be inductively coupled to the stationarily laid primary conductor and electrically connected in parallel or in series with a capacitance such that the associated resonant frequency substantially corresponds to the frequency of the alternating current fed into the primary conductor. Transport system according to at least one of the preceding claims, characterized in that in the slot waveguide section of a profile rail part, an antenna is arranged, which is connected to the profile rail part and high-frequency signals in the rail direction and counter to the rail direction in the slot waveguide section can be coupled, in particular coupled. Transport system according to at least one of the preceding claims, characterized in that the switch is designed to be passive, ie in particular by shifting a holding part depending on the displacement position respective switch piece is activated, in particular wherein the activatable switch pieces are fixed to the holding part. Transport system after. at least one of the preceding claims, characterized in that is arranged on the profile rail part, in particular on the upper and lower cheek area, respectively, a rolling area for lateral guide wheels, and / or that a rolling area for a wheel, in particular carrying wheel and / or driving wheel, of the vehicle, is arranged on a cheek area of the profiled rail part. Transport system according to at least one of the preceding claims, characterized in that on the profiled rail part a distance sensor, in particular barcode, is arranged, which is arranged by a reader arranged on the vehicle, in particular sensor, is detectable, in particular wherein the distance encoder is arranged on a wall part of the profile rail part, in particular glued. Transport system according to at least one of the preceding claims, characterized in that an electric motor for driving a wheel of the vehicle is arranged on a module, in particular on the front module. Transport system according to at least one of the preceding claims, characterized in that the profiled rail part is a continuous casting, in particular an aluminum continuous casting, so that the slot waveguide section is one piece with the profiled rail part manufacturable.

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