Patent Application
20250187662
This application claims benefit to German Patent Application No. DE 10 2023 134 088.3, filed on Dec. 6, 2023, which is hereby incorporated by reference herein.
The invention relates to a kink angle sensor arrangement for ascertaining a kink angle between a towed vehicle and a towing vehicle, to a vehicle combination with such a kink angle sensor arrangement, and to a method for forming such a vehicle combination.
In commercial vehicles which are operated with a relatively high degree of automation, information about a kink angle between a towing vehicle, for example the tractor or semitrailer tractor, and the towed vehicle, for example a semitrailer or a dolly, is necessary to plan, for example, a target trajectory and/or to automatedly control a movement of the semitrailer truck, in particular when reversing. In order to obtain such information about the kink angle, current concepts envisage in particular a kink angle sensor arrangement which is arranged separately on a fifth-wheel plate on the towing vehicle, or which is integrated into the fifth-wheel plate.
This is described, for example, in DE 199 64 045 A1, according to which the kingpin of a semitrailer is magnetized or is connected to a permanent magnet and the swiveling of the trailer is detected via a magnetic field sensor on the semitrailer tractor, situated in the vicinity of the kingpin. A similar solution is described in DE 10 2020 004 837 A1.
In addition to a high degree of complexity, there is the significant disadvantage that an offset compensation is required in order to determine a “zero position” or “reference position” or starting position, i.e. the kink angle during “defined straight-line driving”. Direct reversing after coupling has been effected is accordingly, for example, impossible or possible only in certain conditions.
It is furthermore described in DE 10 2018 125 950 A1 to pretension a plate-like body, which is fixed to the towing vehicle and has a plurality of sensors arranged in an array or grid, against a drawbar as a coupling element fixed to the trailer. The sensors detect contact with the coupling element fixed to the trailer, wherein the coupling element fixed to the trailer contacts a different number of sensors depending on the kink angle such that a kink angle can be deduced by a corresponding signal evaluation.
It is furthermore described in DE 10 2015 103 972 A1 to connect a connecting element on one side to a drawbar of a trailer via a magnet as a coupling piece, and on the other side to an element mounted rotatably on the vehicle in the axis of rotation of the ball head as an articulation piece which has a magnetic part. The rotation of the element can here be detected via a magnetic field sensor which is below the ball head and detects the magnetic field of the magnetic part on the rotatably mounted element such that a kink angle can be deduced therefrom.
Optical methods are furthermore known which are based on the evaluation of camera images. Thus, the contours of the trailer or towing vehicle are detected, for example, via laser systems or cameras and the kink angle is estimated based on optical evaluation methods. A disadvantage here is that these systems have a high sensitivity to dirt and a limited measurement range (<) 45° and limited measurement accuracy (>=1°). In addition, they are dependent on and sensitive to the ambient light.
In an embodiment, the present disclosure provides a kink angle sensor arrangement for a vehicle combination including a towing vehicle with a first longitudinal center axis and a towed vehicle with a second longitudinal center axis, wherein the kink angle sensor arrangement can be arranged between the towing vehicle and the towed vehicle, in order to ascertain a kink angle between the towing vehicle and the towed vehicle. The kink angle sensor arrangement comprises a connecting element with a third longitudinal center axis, a first articulation piece on a first side of the connecting element, and a second articulation piece for connection to the towing vehicle or to the towed vehicle. The first articulation piece is configured to be mounted rotatably on the second articulation piece such that the first articulation piece can twist about a second axis of rotation with respect to the second articulation piece. The kink angle sensor arrangement further comprises a first coupling piece on a second side of the connecting element and a second coupling piece configured to connect to the towed vehicle when the second articulation piece is connected to the towing vehicle, or to connect to the towing vehicle when the second articulation piece is connected to the towed vehicle. The first coupling piece is configured to be detachably mechanically connected to the second coupling piece, such that twisting of the first coupling piece with respect to the second coupling piece is prevented. The kink angle sensor arrangement further comprises a sensor system configured to detect a rotated position and/or a rotational movement of the first articulation piece about the second axis of rotation, and to generate and output a sensor signal. The sensor signal characterizes the rotated position and/or the rotational movement of the first articulation piece about the second axis of rotation.
Subject matter of the present disclosure will be described in even greater detail below based on the exemplary figures. All features described and/or illustrated herein can be used alone or combined in different combinations. The features and advantages of various embodiments will become apparent by reading the following detailed description with reference to the attached drawings, which illustrate the following:
In an embodiment, the present invention provides a kink angle sensor arrangement and a vehicle combination by means of which a kink angle between a towed vehicle and a towing vehicle can be ascertained automatedly in a simple and reliable fashion. A method for forming the vehicle combination with the kink angle sensor arrangement is also provided.
According to an embodiment of the invention, a kink angle sensor arrangement is provided for a vehicle combination comprising a towing vehicle with a first longitudinal center axis and a towed vehicle with a second longitudinal center axis, preferably a semitrailer, wherein the kink angle sensor arrangement can be arranged between the towing vehicle and the towed vehicle, in order to ascertain a kink angle between the towing vehicle and the towed vehicle, wherein the kink angle sensor arrangement has at least:
According to an embodiment of the invention, a vehicle combination comprising a towing vehicle with a first longitudinal center axis and a towed vehicle with a second longitudinal center axis, preferably a semitrailer, is also provided, wherein the towing vehicle is connected to the towed vehicle via a fifth-wheel coupling (coupling device) so that it can swivel about a first axis of rotation. The fifth-wheel coupling or coupling device is here formed by a kingpin on the towed vehicle and a fifth-wheel plate on the towing vehicle, wherein the kingpin is held in a holding region of the fifth-wheel plate or the mouth of the fifth-wheel plate so that it can swivel, and is locked therein.
A kink angle sensor arrangement is arranged between the towing vehicle and the towed vehicle, by means of which a kink angle between the towing vehicle and the towed vehicle can be ascertained, wherein the kink angle sensor arrangement has at least:
It is provided here that
Also provided is a sensor system which is designed to detect a rotated position and/or a rotational movement of the first articulation piece about the second axis of rotation and to generate and output a sensor signal, wherein the sensor signal characterizes the rotated position and/or the rotational movement of the first articulation piece about the second axis of rotation, and hence also the kink angle between the towing vehicle and the towed vehicle.
According to an embodiment of the invention, a method for forming the vehicle combination according to the present disclosure is provided, wherein the connecting element of the kink angle sensor arrangement is mounted on the second articulation piece so that it can rotate via the first articulation piece such that the first articulation piece can twist about the second axis of rotation with respect to the second articulation piece, and wherein
The following advantages arise therefrom:
By virtue of the kink angle sensor arrangement and the correspondingly fixed attachment on one of the vehicles and the attachment via a bearing on the in each case other vehicle, the rotational movement of the towing vehicle with respect to the towed vehicle can be converted into a rotational movement between the first articulation piece and the second articulation piece. By virtue of a corresponding sensing of this rotational movement via the sensor system, the kink angle can be simply derived from simple geometric observations, in particular when the sensor system outputs an absolute angle directly or such an absolute value can be ascertained directly from the output sensor signals. In this case, offset compensation can also be omitted because an absolute value is ascertained and output which is measured from a known starting position, in particular a starting position (absolute angle=0°) when the two longitudinal center axes of the vehicles lie parallel to each other and the kink angle is also 0°.
Such a kink angle sensor arrangement can additionally be fixed automatically via the coupling pieces and consequently be brought into the correct and into a known orientation such that no manual intervention is necessary and the kink angle is available immediately without having to perform offset compensation. To do this, corresponding guide devices can be provided which, when the two vehicles are coupled to each other, ensure that the two coupling pieces automatically engage in each other and are mechanically connected to each other (irrespective of the existing kink angle or in a specified kink angle range < >0°).
Thus, if the coupling takes place at a kink angle not equal to 0°, the connecting element will, after the mechanical connection has been formed via the two coupling pieces, automatically be oriented with respect to the respective (fixedly connected) vehicle, there is always a known and also fixed spatial relationship which follows from the position and the construction of the coupling pieces. The currently existing kink angle can therefore be ascertained directly from the rotated position of the first articulation piece directly after the coupling and without any further calibration steps.
It is furthermore preferably provided that
It is furthermore preferably provided that the first articulation piece is configured in the form of a disk, in particular a circular disk, and the second articulation piece is designed as a bearing component, wherein the circular disk is mounted rotatably on the bearing component. A simple rotatable bearing arrangement can consequently be achieved, the rotation of which can be detected via the sensor system. It is preferably provided here that the kingpin at the same time forms the bearing component, wherein the circular disk bears in sliding fashion on the kingpin. As a result, use is made of the kingpin which is present anyway and which is suitable as a bearing and an axis of rotation such that there is no need for additional bearing components. In addition, ascertaining the kink angle is facilitated if the first axis of rotation lies on top of the second axis of rotation, which is generally the case with such a design.
It is furthermore preferably provided that the circular disk is configured as magnetic or ferromagnetic, in particular with magnet poles alternating over the circumference, and the sensor system is designed to contactlessly detect the magnetic or ferromagnetic action of the circular disk when the circular disk twists about the second axis of rotation, wherein the sensor system preferably has a Hall sensor for this purpose. This enables simple and contactless detection of the rotation of the circular disk which is additionally largely unaffected by the weather.
It is furthermore preferably provided that the circular disk is designed as a magnet wheel, wherein the circular disk has for this purpose, for example, teeth and gaps situated between them which are uniformly distributed in a circle, or holes uniformly distributed in a circle are introduced into the circular disk, and the sensor system is designed to detect optical radiation which is output from a radiation source of the sensor system and passes temporarily through the gaps or through the holes to an optical sensor of the sensor system when the circular disk twists about the second axis of rotation. This represents a further simple and accurate option for the contactless sensing of the rotational movement.
It is furthermore preferably provided that the circular disk interacts frictionally or in form-fitting fashion with a wheel of the sensor system in such a way that the wheel also twists when the circular disk twists about the second axis of rotation, wherein the rotation of the wheel can be detected by a speed sensor of the sensor system, and wherein the sensor signal can preferably be generated and output depending on the rotation of the wheel. Accordingly, in an appropriate environment, simple measurement of the rotational movement by contact is also provided, which can represent a favorable solution which can also be retrofitted simply.
It is furthermore preferably provided that the circular disk is connected to a spring element, wherein the spring element is tensioned or relaxed when the circular disk twists about the second axis of rotation, wherein the spring element is moreover connected to a force sensor of the sensor system such that a force acting on the spring element can be measured, and wherein the sensor signal can preferably be generated and output depending on the force acting on the spring element. Measurement of the force is accordingly also provided in order to detect the rotational movement, wherein this measurement is also largely unaffected by the weather.
It is furthermore preferably provided that the sensor signal transmits an absolute angle, wherein the absolute angle specifies the rotated position of the first articulation piece with respect to a starting position. Accordingly, an absolute angle is directly output such that there is no need to use complex conversions or additional sensor system parameters for calculating the kink angle.
It is preferably provided here that the starting position is present when the first longitudinal center axis lies parallel to the second longitudinal center axis and preferably also parallel to the third longitudinal center axis. It is thus assumed that an absolute value of 0° is output when driving in a straight line such that immediately after the coupling a kink angle is immediately available, after the coupling pieces engage with each other and ensure a fixed known spatial relationship. There is therefore no need for an additional calibration step after the coupling, which in particular simplifies automated operation.
It is furthermore preferably provided that the sensor system is connected to a control unit by signals, for example to a trailer braking control unit or to a trailer central control unit or to a semitrailer tractor central control unit such that the sensor signals can be transmitted to the control unit, wherein the control unit is designed to generate and output a kink angle signal from the sensor signals, wherein the kink angle signal transmits the kink angle. The sensor signals can therefore be processed immediately at the respective location in the vehicle and be used for automated control.
It is furthermore preferably provided that a plug-in connection, in particular a fluid-conducting plug-in connection and/or an electrical plug-in connection, is formed between the towing vehicle and the towed vehicle, wherein the plug-in connection has a first connecting part and a second connecting part, wherein the first connecting part is connected detachably to the second connecting part, wherein the kink angle sensor arrangement is arranged at least partially at the plug-in connection or integrated therein, preferably at the fluid-conducting plug-in connection and/or at the electrical plug-in connection. Accordingly, components can thus also be combined which are already intended to be connected to one another automatically in an automated operation. The first connecting part is thus situated, for example, on the towed vehicle or cabling and/or tubing fastened on the first connecting part is routed to the towed vehicle, and the second connecting part is situated, for example, on the towing vehicle or cabling and/or tubing fastened on the second connecting part is routed to the towing vehicle.
It can here preferably be provided that, where the second coupling piece is arranged on the towing vehicle:
As a result, the coupling of the kink angle sensor arrangement to the respective vehicle can be combined with the formation of the plug-in connection (in a fluid-conducting fashion and/or electrically) such that no separate procedures are necessary for this. In addition, only one device for automatically coupling the plug is then necessary. As soon as the plug-in connection is then formed, energy and/or signal transmission is then also ensured, in particular when the sensor signals of the sensor system are transmitted via the electrical plug-in connection. The kink angle sensor arrangement is thus immediately functional when the plug-in connection is formed.
It is furthermore preferably provided that cabling and/or tubing which is routed to the first connecting part of the plug-in connection or to the second connecting part of the plug-in connection depending on with which connecting part the first coupling piece is combined at the connecting element, is fixed on the connecting element of the kink angle sensor arrangement or is routed along the connecting element of the kink angle sensor arrangement or is integrated into the connecting element of the kink angle sensor arrangement. Accordingly, not only can the connecting elements be combined or connected to each other but also the cabling and/or tubing can be combined. As a result, the coupling and the routing of the cabling and/or tubing to the respective vehicle can be simplified without using additional elements.
It is furthermore preferably provided that the first coupling piece is automatically connected to the second coupling piece whilst or after the towing vehicle is being or has been coupled to the towed vehicle via the fifth-wheel coupling, preferably at the same time as the plug-in connection is formed by plugging the first connecting part together with the second connecting part, in particular when the respective coupling piece of the kink angle sensor arrangement is, as described, combined with or connected to the respective connecting part of the plug-in connection. This enables simple automated operation in just one combined plug-in procedure.
It is furthermore preferably provided that the connecting arm of the kink angle sensor arrangement is automatically oriented when the towing vehicle is moved closer to the towed vehicle, or the other way round, in such a way that
According to an embodiment of the invention, a kink angle sensor arrangement for a vehicle combination consisting of a towing vehicle with a first longitudinal center axis and a towed vehicle with a second longitudinal center axis, preferably a semitrailer, is furthermore provided, wherein the kink angle sensor arrangement can be arranged between the towing vehicle and the towed vehicle in order to ascertain a kink angle between the towing vehicle and the towed vehicle, wherein the kink angle sensor arrangement has at least:
It is preferably provided that a plug-in connection, in particular a fluid-conducting plug-in connection and/or an electrical plug-in connection which is or can be formed between the towing vehicle and the towed vehicle, is arranged at least partially at the kink angle sensor arrangement or is integrated into the latter,
In the case of such a vehicle combination 100, in order to ascertain a kink angle K which is measured between a first longitudinal center axis L1 of the towing vehicle 1 and a longitudinal center axis L2 of the towed vehicle 2, a kink angle sensor arrangement 10 illustrated in schematic form in
A sensor system 18 is furthermore provided which is designed to detect by the use of sensors a rotational movement or a rotated position of the first articulation piece 14 connected to the connecting element 11 and to output the sensor signal S18 characterizing the rotational movement or the rotated position. For this purpose, the sensor system 18 can, in the case of an implemented evaluation unit, for example, directly ascertain an absolute angle W corresponding to the rotated position of the first articulation piece 14 and output it via the sensor signal S18. The absolute angle W then corresponds to the rotated position or angular position of the first articulation piece 14 with respect to a fixed normal position.
If there is no evaluation unit implemented in the sensor system 18, in the case of an incremental encoder as a constituent part of the sensor system 18, the individually detected pulses I which are detected by the incremental encoder when the first articulation piece 14 rotates can, for example, be output, correspondingly encoded, via the sensor signal S18. The absolute angle W can then subsequently be derived from the number of output and transmitted pulses I, knowing the number of pulses I per complete revolution.
The output sensor signals S18 can be further processed in a control unit 20, i.e. correspondingly interpreted or evaluated, for example converted into an actual kink angle K between the first longitudinal center axis L1 and the second longitudinal center axis L2. Depending on the arrangement of the sensor system 18, for example on the towed vehicle 2, the control unit 20 can be a trailer braking control unit 20a or a trailer central control unit 20b. This control unit 20 can then transmit interpreted kink angle signals SK which include in particular the kink angle K to a semitrailer tractor central control unit 21 in the semitrailer tractor 1a, for example via a trailer CAN bus or an automotive Ethernet connection.
The semitrailer tractor central control unit 21 can then use the interpreted kink angle signals SK for further processing, for example in order to ascertain or to verify a target trajectory for the vehicle combination 100 and to autonomously control the vehicle combination 100 depending on the target trajectory. If the sensor system 18 is arranged on the towing vehicle 1, in particular on the semitrailer tractor 1a, the control unit 20 can be the semitrailer tractor central control unit 21 or be a unit integrated therein which then ascertains and further processes the interpreted kink angle signals SK, for example for the target trajectory, in order to correspondingly autonomously control the vehicle combination 100.
A plurality of embodiments, which are described by way of example below, are provided for the attachment of the kink angle sensor arrangement 10 to the vehicle combination 100:
In the embodiment illustrated in
In alternative embodiments, it can be provided that the circular disk 30 is mounted in a bearing component 32 on the towed vehicle 2 which is arranged off-center with respect to the first axis of rotation D1. The circular disk 30 is then not placed over the kingpin 3b and instead is mounted offset thereto in the bearing component 32 such that the first axis of rotation D1 in the kingpin 3b and the second axis of rotation D2 of the circular disk 30 no longer coincide, in particular the second axis of rotation D2 does not run through the kingpin 3b.
The first coupling piece 16 on the second side 13 of the connecting element 11 is configured, for example, as a plug or as a socket and the second coupling piece 17 is configured as the corresponding counter piece, i.e. as a socket or plug. The two coupling pieces 16, 17 can be mechanically detachably connected to each other, i.e. the first and second coupling piece 16, 17 are configured as a plug/socket combination, wherein other types of connection are also provided. The second coupling piece 17 is here arranged fixedly or rigidly on the towing vehicle 1 such that the connecting element 11 is likewise fixedly or rigidly connected to the towing vehicle 1 via the second side 13 by the plug/socket combination.
In the case of such an arrangement, the connecting element 11 always has, when the plug/socket combination is formed, a fixed or consistent spatial relationship with respect to the first longitudinal center axis L1 of the towing vehicle 1 and modifies its spatial relationship with respect to the second longitudinal center axis L2 of the towed vehicle 2 as soon as the towed vehicle 2 twists relative to the towing vehicle 1 about the first axis of rotation D1 in the kingpin 3b or the kink angle K between the two longitudinal center axes L1, L2 changes. This changing spatial relationship between the connecting element 11 and the second longitudinal center axis L2 simultaneously effects a rotational movement of the first articulation piece 14 with respect to the second articulation piece 15 (bearing component 32) such that the kink angle K can be deduced from this rotational movement.
The rotational movement of the first articulation piece 14 can be detected via the sensor system 18 which is situated on the towed vehicle 2 in this embodiment. The sensor system 18 can have for this purpose, for example, a Hall sensor 18a which is situated adjacent to the circular disk 30 but is not in contact with the latter, for example above the circular disk 30 or at one end side of the circular disk 30. The Hall sensor 18a can for this purpose, for example, be fastened in a protected fashion on an underside 2b of the towed vehicle 2, preferably off-center with respect to the first axis of rotation D, and consequently be positioned adjacent to the circular disk 30. The circular disk 30 is configured as magnetic or ferromagnetic with magnet poles (N, S) alternating over the circumference, and the Hall sensor 18a is spaced apart from the circular disk 30 in such a way that the magnetic or ferromagnetic effect, which is modified in the case of twisting, of the adjacent circular disk 30 can be detected by the Hall sensor 18a.
The sensor system 18 then, based on the measured values of the Hall sensor 18a which are dependent on the rotational movement between the circular disk 30 and the Hall sensor 18a, outputs a corresponding sensor signal S18 which characterizes this rotational movement or a current rotated position of the circular disk 30 about the second axis of rotation D2. Depending on the structure of the sensor system 18, the sensor signal S18 can, for example, directly transmit an absolute angle W by which the circular disk 30 has twisted about the second axis of rotation D2 with respect to a starting position A (zero position). Or the sensor signal S18 outputs, correspondingly encoded, the pulses I which are measured by the Hall sensor 18a and result from the changing magnet poles, and from which the absolute angle W can be derived.
In this way, a kink angle signal SK which includes or specifies the kink angle K can be generated and output for further use, based on the sensor signal S18 as described above after corresponding interpretation or evaluation in the control unit 20. The kink angle K results, irrespective of whether the first axis of rotation D1 and the second axis of rotation D2 coincide, directly from the absolute angle W by geometric observations because the circular disk 30 is fixedly connected to the connecting element 11 which in turn has a fixed spatial relationship with respect to the first longitudinal center axis L1.
In order to simplify the geometric observation when ascertaining the kink angle K, the connecting element 11 or a third longitudinal center axis L3 (see
As an alternative to magnetic measurement via the Hall sensor 18a, optical measurement can also be provided, wherein the circular disk 30 has, in the configuration as a magnet wheel 30, teeth 34 which are distributed uniformly over the whole circumference and gaps 35 situated between them (see
The sensor system 18 then, based on the measured values of the optical sensor 18c which are dependent on the rotational movement between the circular disk 30 and the optical sensor 18c, outputs a corresponding sensor signal S18 which characterizes this rotational movement or a current rotated position of the circular disk 30 about the second axis of rotation D2. Also, in this embodiment either the absolute angle W or the pulses I which result from the optical radiation which is temporarily allowed to pass through can here be transmitted via the sensor signal S18. In this way, a kink angle signal SK which includes or specifies the kink angle K can also be generated and output for further use, based on the sensor signal S18 as described above after corresponding interpretation or evaluation in the control unit 20.
In a further embodiment, a sensor system 18 with a contact measurement method is provided in which the circular disk 30 interacts frictionally or in form-fitting fashion with a wheel 18d. Holes 36 (or notches) can, for example, for this purpose and as illustrated schematically in
The sensor system 18 then, based on the measured values of the speed sensor 18e which are dependent on the rotational movement of the circular disk 30, outputs a corresponding sensor signal S18 which characterizes this rotational movement or a current rotated position of the circular disk 30 about the second axis of rotation D2. In this embodiment, the absolute angle W is here preferably transmitted via the sensor signal S18. In this way, a kink angle signal SK which includes or specifies the kink angle K can also be generated and output for further use, based on the sensor signal S18 as described above after corresponding interpretation or evaluation in the control unit 20.
A further concept for the sensor system 18 provides that a spring element 18f is connected, for example at the edge, to the circular disk 30, wherein the spring element 18f is tensioned or relaxed, depending on the direction of rotation, when the circular disk 30 twists. The spring element 18f can be a restoring spring or a torsion/spiral spring (see
In further embodiments, it is provided that the towing vehicle 1 and the towed vehicle 2 are swapped when the kink angle sensor arrangement 10 is attached, as illustrated by way of example in
In the case of such an arrangement, the connecting element 11 always has, when the plug/socket combination is formed, a fixed or consistent spatial relationship with respect to the second longitudinal center axis L2 of the towed vehicle 2 and modifies its spatial relationship with respect to the first longitudinal center axis L1 of the towing vehicle 1 as soon as the towed vehicle 2 twists relative to the towing vehicle 1 about the first axis of rotation D1 in the kingpin 3b or the kink angle K between the two longitudinal center axes L1, L2 changes. This changing spatial relationship between the connecting element 11 and the first longitudinal center axis L1 simultaneously effects a rotational movement of the first articulation piece 14 with respect to the second articulation piece 15 such that the kink angle K can be deduced from this rotational movement.
The rotatable connection between the two articulation pieces 14, 15 can in this embodiment preferably likewise be situated in the first axis of rotation D1, i.e. the second axis of rotation D2 about which the first articulation piece 14 rotates lies on top of the first axis of rotation D1. The second axis of rotation D2 can for this purpose take the form, for example, of a bolt 40 which is fastened on the fifth-wheel plate 3a on the towing vehicle 1 and is placed onto the circular disk 30 as a first articulation piece 14 with its central bore in sliding fashion, cf
In a further embodiment, instead of being arranged on an additional bolt 40, the circular disk 30 can also be arranged on the kingpin 3b (second articulation piece 15) itself, for example below the fifth-wheel plate mouth 3c, when the kingpin 3b is held in the locked state in the fifth-wheel plate mouth 3c. The circular disk 30 then thus always rotates together with the kingpin 3b and likewise D1=D2.
The rotational movement of the first articulation piece 14 or the circular disk 30 can be detected via the sensor system 18 which is situated on the towing vehicle 1 in this embodiment. The configuration of the sensor system 18 is comparable to that of the sensor system 18 in the preceding embodiments. Accordingly, magnetic measurement via a Hall sensor 18a, optical measurement via a light source 18b and an optical sensor 18c, contact measurement via a wheel/toothed wheel 18d and a speed sensor 18e, or force measurement via a spring element 18f and a force sensor 18g can take place. The circular disk 30 is then designed correspondingly as in the preceding embodiments. The principle of the above described sensor system 18 can therefore also correspondingly be applied in these embodiments. The starting position A is, however, here a different one, wherein the third longitudinal center axis L3 of the connecting element 11 is preferably oriented parallel to the second longitudinal center axis L2 of the towed vehicle 2 when the vehicles 1, 2 are coupled to each other. This orientation preferably takes place automatically, for example by a corresponding guide on the towed vehicle 2 when the two vehicles 1, 2 are coupled (automatedly) to each other. As a result, the geometric observation when ascertaining the kink angle K from the measured absolute angle W can also be simplified and, after the coupling, such a kink angle K is directly available.
According to
The kink angle sensor arrangement 10 can be integrated into such a plug-in connection 4; 4a, 4b as follows:
In the case of an arrangement of the first coupling piece 16 on the towed vehicle 2 (via the articulated connection) and of the second coupling piece 17 on the towing vehicle 1 (cf
This makes it possible for the spatial relationship of the respective connecting element 11 with respect to the longitudinal center axis L1, L2 of the respective vehicle 1, 2 to be fixed at the same time as the fluid-conducting and/or electrical connection is formed between the two vehicles 1, 2 by the respective connecting parts 5, 6 of the plug-in connection 4, 4a, 4b being plugged together. There is therefore no need for a further connecting step and use can be made of the same plug-in actuation device 7 as for the plug connector 4; 4a, 4b.
At the same time, the sensor system 18 is then also positioned after the automated plugging-in and in some circumstances the supply of energy to the sensor system 18 is also ensured if this takes place via the electrical plug-in connection 4b. The sensor signal S18 and/or the interpreted kink angle signal SK can furthermore be transmitted directly to the control unit 20 or semitrailer tractor central control unit 21 via the electrical plug-in connection 4b. After the plug-in connection 4 has been formed automatedly, transmission of the kink angle signals SK is thus also enabled automatically.
It can furthermore be provided that the respective (electrical) cabling 8 and/or (fluid-conducting) tubing 9, which leads to that connecting part 5, 6 which is combined with the first coupling piece 16 on the connecting element 11 is fixed or routed on the connecting element 11 or is integrated into the connecting element 11.
While subject matter of the present disclosure has been illustrated and described in detail in the drawings and foregoing description, such illustration and description are to be considered illustrative or exemplary and not restrictive. Any statement made herein characterizing the invention is also to be considered illustrative or exemplary and not restrictive as the invention is defined by the claims. It will be understood that changes and modifications may be made, by those of ordinary skill in the art, within the scope of the following claims, which may include any combination of features from different embodiments described above.
The terms used in the claims should be construed to have the broadest reasonable interpretation consistent with the foregoing description. For example, the use of the article “a” or “the” in introducing an element should not be interpreted as being exclusive of a plurality of elements. Likewise, the recitation of “or” should be interpreted as being inclusive, such that the recitation of “A or B” is not exclusive of “A and B,” unless it is clear from the context or the foregoing description that only one of A and B is intended. Further, the recitation of “at least one of A, B and C” should be interpreted as one or more of a group of elements consisting of A, B and C, and should not be interpreted as requiring at least one of each of the listed elements A, B and C, regardless of whether A, B and C are related as categories or otherwise. Moreover, the recitation of “A, B and/or C” or “at least one of A, B or C” should be interpreted as including any singular entity from the listed elements, e.g., A, any subset from the listed elements, e.g., A and B, or the entire list of elements A, B and C.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10 2023 134 088.3 | Dec 2023 | DE | national |
