EP3622245A1 - Angle-measuring assembly - Google Patents
Angle-measuring assemblyInfo
- Publication number
- EP3622245A1 EP3622245A1 EP18721743.5A EP18721743A EP3622245A1 EP 3622245 A1 EP3622245 A1 EP 3622245A1 EP 18721743 A EP18721743 A EP 18721743A EP 3622245 A1 EP3622245 A1 EP 3622245A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coupling
- magnetic field
- angle
- coupling element
- transmitter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60D—VEHICLE CONNECTIONS
- B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
- B60D1/01—Traction couplings or hitches characterised by their type
- B60D1/02—Bolt or shackle-type couplings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60D—VEHICLE CONNECTIONS
- B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
- B60D1/58—Auxiliary devices
- B60D1/62—Auxiliary devices involving supply lines, electric circuits, or the like
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
- G01D5/204—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the mutual induction between two or more coils
Definitions
- the invention relates to an angle measuring arrangement for detecting a
- Swivel angle between the longitudinal center axis of a towing vehicle and the longitudinal center axis of a trailer coupled by a particular releasable and a pivot axis at the apex of the swivel angle coupling coupling trailer wherein the coupling has a connected to the towing vehicle first coupling element and connected to the trailer second coupling element, with a sensor associated with the coupling for generating a magnetic field, with a coupling sensor associated with the clutch for detecting the magnetic field and with an evaluation device for determining the pivot angle in dependence on the magnetic field detected by the measured value sensor.
- the invention relates to a coupling with such
- the invention relates to a train combination with a towing vehicle and with the tractor by a particular solvable and a
- Pivot axis at the apex of the swivel angle forming coupling coupled trailer wherein the coupling has a connected to the towing vehicle first coupling element and connected to the trailer second coupling element.
- the invention relates to a method for detecting a pivoting angle between the longitudinal center axis of a towing vehicle and the longitudinal central axis of the towing vehicle by a particular solvable and a Pivot axis at the apex of the swivel angle forming coupling coupled trailer by means of an angle measuring arrangement.
- Angle measuring arrangements of the type mentioned are known from the prior art.
- published patent application DE 10 2014 224 808 A1 discloses an angle measuring arrangement for detecting a
- Angle measuring arrangements takes place detecting the pivot angle by means of a measured value sensor, which for detecting a relative to the
- Sensor sensor pivotable transmitter in particular in the form of a magnetic element is set up.
- this is the measured value sensor on the towing vehicle, in particular a first
- Coupling element of the towing vehicle arranged and the transmitter on the trailer, in particular on a second coupling element of the trailer, arranged.
- the measured value sensor is arranged on the second coupling element and the measuring transducer on the first coupling element.
- the sensor and the transmitter in the respective
- Angular measuring arrays are sensitive to external magnetic fields. Also, the detection of the swivel angle by means of such
- Claim 1 has the advantage that it is inexpensive, in particular by dispensing with an expensive magnetic element. Also eliminates the insertion of the transmitter in the coupling element. Another advantage is that the angle measuring arrangement is immune to interference from external magnetic fields. In addition, the space required is small and the angle measuring arrangement is Tolerance robustness to mechanical displacements and independent of many external influences, such as humidity, temperature and lubricant. According to the invention, it is provided that the transmitter of the
- Coupling element are arranged, and that a magnetic field manipulator is arranged on the second or the first coupling element, which is at least substantially axially opposite to the transducer and the measured value sensor with respect to the pivot axis.
- the transmitter coil and the receiver coil are designed as electromagnetic coils, designed for the generation and / or detection of magnetic fields and preferably arranged on the same component, in particular the same circuit board.
- the transmitter coil is designed and set up to generate a magnetic field.
- the receiver coil is designed and set up to detect the magnetic field generated by the transmitter coil.
- the transmitter coil forms the transmitter and the receiver coil the sensor.
- Transmitter and measured value sensor are both arranged on the first or both on the second coupling element and the
- Magnetic field manipulator is arranged on the respective other, ie the second or the first coupling element.
- the magnetic field manipulator is at least essentially opposite to the transmitter and / or the measured value sensor in relation to the pivot axis.
- the transmitter, the sensor and the magnetic field manipulator are arranged at the same radial distance from the pivot axis, however, the magnetic field manipulator is arranged in a different axial position of the pivot axis as the transmitter and the sensor.
- the magnetic field manipulator preferably lies in a first imaginary plane which extends perpendicular to the pivot axis, and the transmitter and the measured value sensor lie in a second imaginary plane, which likewise extends perpendicular to the pivot axis.
- the magnetic field manipulator is mounted by means of the coupling so pivotally relative to the transmitter and / or the sensor, that it is at least substantially always in the first imaginary plane.
- a magnetic field manipulator here is to be understood as meaning an element or a structure which is set up to influence the magnetic field generated by the measuring sensor in such a way that the pivoting angle can be determined by means of the magnetic field detected by the measured value sensor and an evaluation device.
- the magnetic field manipulator is designed as a passive element which is not dependent on any electrical power supply.
- the magnetic field manipulator has at least in a first region a first electrical and / or magnetic conductivity, which differs from a second electrical and / or magnetic conductivity in a second region of the magnetic field manipulator or a region adjacent to the magnetic field manipulator.
- the measuring sensor and / or the measured value sensor are preferably on a curved and / or flexible component, in particular on one
- Magnetic field manipulator is arranged or formed in or on a cylindrical element or portion, in particular a bolt, of the first coupling element.
- the cylindrical element is preferably part of a bolt coupling or mouth coupling in which the second coupling element is substantially formed as an eyelet or has an eyelet, which is introduced for coupling in the first coupling element, in particular in a mouth-shaped opening of the mouth coupling, and there by means of the cylindrical Element of the first coupling element is fixed, preferably penetrated, so that the second coupling element is pivotally mounted on the first coupling element.
- Magnetic field manipulator has the advantage that the angle measuring arrangement is particularly space-saving and compact realized as well as in conventional couplings, especially pin couplings and jaw couplings, trained or can be retrofitted. Furthermore, it is preferably provided that the magnetic field manipulator is formed by a recess or a plurality of recesses in or on the first or the second coupling element. Such a magnetic field manipulator has the advantage that the angle measuring arrangement is inexpensive and can be formed in a simple manner, preferably by means of one or more millings, without high technical complexity. Furthermore, such a magnetic field manipulator is susceptible to interference and not to an electrical
- the recess of the magnetic field manipulator is filled with an electrically and / or magnetically insulating material, in particular a friction-resistant plastic and / or a ceramic.
- the coupling is designed to be particularly stable and not susceptible to mechanical displacement.
- the recess is filled with a material which has a low electrical and / or magnetic conductivity. It is important that the electrical and / or magnetic conductivity of the recess or of the material of the electrical and / or magnetic conductivity of the surrounding material, ie in particular of the material of the first or the second
- Clutch element is different. This is a structure made of
- the magnetic field manipulator in particular the gap filled with air, in particular the electrically and / or magnetically insulating material, thus influences the magnetic field generated by the transmitter coil more or less strongly than the areas surrounding the magnetic field manipulator.
- the magnetic field manipulator in particular the material in the recess is not magnetic.
- the magnetic field manipulator in particular the material in the recess is not magnetic.
- Magnetic field manipulator no permanent magnet on.
- the transmitter and / or the measured value sensor extend along a circumference circle section to the pivot axis.
- the circumferential circle section comprises the entire circumferential circle, preferably at least one contiguous half of the circumferential circle, preferably at least one angle range relevant to the steering between towing vehicle and trailer. This increases the accuracy of the angle measuring arrangement.
- the circumferential circle section is a cylinder inner wall or a cylinder wall of the first or second coupling element.
- Pivot axis the central axis of the cylinder.
- the center axis of the cylinder is not in the pivot axis, but parallel to it at a distance.
- the cylinder is at least an imaginary cylinder which can be assigned to the first or second coupling element,
- one of the two coupling elements is at least partially formed as a cylinder.
- a cylinder as a bolt of a bolt coupling and / or a jaw coupling.
- a circumferential circle section of a second cylinder is also associated with the magnetic field manipulator.
- These two cylinders are preferably arranged concentrically to one another and have different radii. In this case, the magnetic field manipulator moves at a pivoting on a circular path that is at least substantially concentric with the
- Peripheral circle portion is a ball inner wall or a ball outer wall of the first or second coupling element.
- the center of such a sphere is preferably the vertex of the pivoting angle. Also the
- Magnetic field manipulator is arranged on a ball inner surface or ball outer surface of the first or second coupling element or can at least be assigned to this. Analogous to the description of the relative
- Swing angles which are located in a street level, can be determined, but alternatively such pivoting angles that are in a plane that is perpendicular or at an angle to the road level.
- the protective layer is preferably electrically insulating and advantageously prevents abrasion of the
- the measuring sensor and the measured value sensor are arranged on the coupling such that the measured value sensor can be coupled inductively with the measuring transmitter.
- the transmitter is inductively coupled to the measured value sensor when there is a coupling between towing vehicle and trailer or the clutch acts and an electrical voltage on
- the measured value sensor is in an effective range of one of the transmitter
- the coupling according to the invention with the features of claim 10 provides that the coupling is provided with an angle measuring arrangement, wherein the angle measuring arrangement is designed according to the invention.
- Coupling is particularly inexpensive to produce and susceptible to mechanical shifts, temperature changes,
- the coupling as a ball and socket coupling, fifth wheel, pin coupling and / or
- the tensioning train according to the invention with the features of claim 12 provides that the coupling is designed according to the invention.
- Such a thing Traction unit is particularly safe due to the störunan perennialen clutch when driving in traffic.
- the inventive method with the features of claim 13 provides the following steps: generating a magnetic field by means of the transmitter, detecting the magnetic field by means of the magnetic field sensor, and determining the pivot angle by means of the evaluation device in response to the detected and influenced by the magnetic field manipulator magnetic field.
- Figure 1 is a train with a jaw clutch and a
- Figure 2 shows a jaw clutch with an angle measuring arrangement in one
- Figure 3 shows a coupling with an angle measuring arrangement in a plan view and Figure 4 shows a transmitter coil and a plurality of receiver coils on a circuit board.
- Figure 1 shows a simplified view of a train 1 with a
- Coupling 4 is coupled and thus a pivot axis A is formed.
- the pivot axis A is perpendicular to the plane and passes through the vertex P therethrough.
- the swivel angle ⁇ does not necessarily have to lie in the illustrated plane, but can also be perpendicular in a plane or at an angle to it.
- the towing vehicle 2 and the trailer 3 along an increasing or decreasing slope, such as on a slope, the
- Swivel angle ⁇ is also a component that is perpendicular to the plane of the drawing. It is important, as can be seen in Figure 1, that the pivoting angle ⁇ between the
- the pivoting angle is preferably determined, which lies in the drawing plane of FIG. 1, that is to say a parallel plane to the road plane.
- the proportion of the swivel angle is determined, which in the plane of
- FIG. 2 shows the coupling 4 between the first coupling element 5 connected to the towing vehicle and the second coupling element 6 connected to the trailer 3.
- the first one is
- Coupling element substantially formed as a mouth-shaped receptacle 7.
- the second coupling element is designed here as an eyelet 8 at the front end - in the direction of the towing vehicle 2 - a drawbar.
- the eyelet 8 is introduced into the mouth-shaped opening 7 and penetrated by a pin 9, so that the first coupling element 5 is coupled to the second coupling element 6.
- each magnetic field manipulator 10 is formed as a recess 11, in particular as a milling 12.
- the structure and arrangement of all magnetic field manipulators 10 are described below with reference to a magnetic field manipulator 10.
- the circuit board 15 is arranged in a circumferential direction about the pivot axis A in the receptacle 7 to the first coupling element 5.
- the surface of the circuit board 15 is arranged at a distance from the pivot axis A and in a plane perpendicular to the pivot axis A.
- this vertical Level is the circuit board 15 along a circumferential circle portion about the pivot axis A - as seen in Figure 3 - arranged in an arc.
- the circuit board 15 has the shape of a ring portion having a ring width which is not zero.
- the printed circuit board 15 respectively axially opposite milling 12 is also preferably annular in this embodiment. Alternatively, however, it may be rectangular or have other shapes. It is important that the magnetic field influenced by it is influenced in such a way that the pivot angle ⁇ can be determined by means of the induced voltage in a receiver coil.
- Each magnetic field manipulator 10 is preferably associated with a printed circuit board 15. Thus, the four shown in Figure 2 are
- Magnetic field manipulators 10 a total of four printed circuit boards 15 assigned.
- the milling 12 with an electrically and / or magnetically non-conductive material
- each of the millings 12 for increasing the stability of the coupling 4 or to a desired electromagnetic interference behavior of the
- Magnetic manipulator 10 is filled with an electrically or magnetically non-conductive or slightly conductive material is filled.
- FIG. 3 shows the coupling 4 in a plan view. Good to see here is that the circuit board 15 is disposed along a circumferential circle portion and forms a ring portion with a recognizable width to the pivot axis A.
- the circuit board 15, which can not be seen here, is arranged substantially symmetrically with respect to the longitudinal center axis M2 of the trailer.
- the milling 12 is substantially symmetrical to the
- Longitudinal axis Ml of the towing vehicle 2 is arranged. Since the two longitudinal central axes M1, M2 fall on one another in FIG. 3, the pivot angle here is zero and thus not shown.
- the receiving coil arranged on the printed circuit board 15, and preferably also the milling 12 extends along the circumference circle section Swivel axis A over an opening angle ß of about 90 °.
- the mill 12 and circuit board 15 extend over a larger or smaller circumferential circle portion.
- the milling 12 and circuit board 15 extends over the entire circumference circle, so that it encloses the eyelet 8.
- the opening angle ⁇ over which the printed circuit board 15, in particular the receiver coil located thereon, is at least twice the maximum pivot angle a to be detected.
- the protective layer 16 is arranged.
- the protective layer 16 protects the printed circuit board 15 against mechanical abrasion and / or is electrically insulating.
- FIG. 4 shows the transmitter 13 as an outer transmitter coil 17 and the measured value sensor 14, which is indicated by three inside the transmitter coil 17
- Receiver coils 17, 18 are arranged on a common carrier, namely the printed circuit board 15, which is designed in particular as a flex circuit board. Each of the coils 17, 18 may be one or as shown in FIG.
- Transmitter coil 17 shown having a plurality of conductor loops.
- Clarity is one of the receiver coils 18 by barlining
- one of the coils 17,18, in particular the transmitter coil 17 is an outer coil and the other coil, in particular the receiver coil 18, an inner coil.
- the at least one outer coil conductor loop substantially encloses a first surface in which the at least one inner coil conductor loop is disposed.
- the second surface enclosed by the inner coil is parallel to the first surface, preferably lying in the first surface.
- the conductor track of the transmitter coil 17 in FIG. 4 runs along a first outer contour of a first circular ring segment and thus forms a
- Each of the tracks of the receiver coils 18 extends within the first annulus segment and is formed of circular trace portions.
- the conductor track sections are sinusoidal.
- the receiver coil makes a kink analogous to the laws of reflection of the geometric optics, so that the two angles between conductor the receiver coil 18 and the second outer contour is equal in magnitude on both sides of the bend.
- the sinusoidality of a received electric voltage signal in the receiver coil 18 is ensured.
- the transmitter coil 17 is acted upon by means of the contact region 19 with an electrical alternating voltage having a frequency of, preferably a few megahertz, particularly preferably 5 MHz, in such a way that in the circular ring section an electromagnetic alternating field substantially perpendicular to the area enclosed by the conductor loop, here so perpendicular to the image plane, trains.
- This in turn induces an electrical voltage in the conductor tracks of the receiver coil 18, since the surfaces enclosed by the conductor tracks of the receiver coil 18 lie parallel to the enclosed surface of the conductor track of the transmitter coil 17.
- Receiver coils 18 are thus inductively coupled to the transmitter coil 17.
- the coils 17, 18 and the magnetic field manipulator 10 are preferably arranged and dimensioned relative to one another such that an amplitude ratio between applied alternating voltage and induced alternating voltage in the receiver coil 18 is dependent on the pivoting angle in a value range between -1 and +1, preferably between -0.3 and +0 , 3 is.
- the amplitude ratio varies from the AC voltage of the transmitter coil 17 to the induced AC voltage of the receiver coil 18, that is, at least between -1 and +1, preferably between -0.3 and +0.3.
- the magnetic field manipulator 10 and / or the conductor track of the receiving coil 18 are shaped and arranged such that the Amplitude ratio between the AC voltage of the transmitter coil 17 and the induced AC voltage of the receiver coil 18 is sinusoidal.
- the at least one conductor loop of the at least one receiver coil 18 is composed of sinusoidal and / or circular conductor track sections.
- Demodulation of the induced AC voltage with the AC voltage of the transmitter coil 17, is closed to an amount and a phase of the coupling.
- the amount varies in particular continuously with the swivel angle a, so that any swivel angle ⁇ can be detected.
- the phase angle relative to one another is 0 ° or 180 °.
- the angle of oscillation ⁇ is closed.
- the receiver coil 18 has at least one left-handed and at least one clockwise-running conductor track section, in which, when an external alternating electromagnetic field is applied, oppositely directed fields are always formed.
- each of the conductor tracks is twisted such that it is designed to be eight-similar in the cross-sectional plane.
- Such a coil has the advantage that external interference magnetic fields, in particular homogeneous external interference magnetic fields, in both conductor track sections of the coil, ie in the right-hand section and in the left-running section, respectively equal electrical interference voltages in opposite
- Noise voltage across the entire receiver coil is zero and the detection of a pivot angle ⁇ is not disturbed with such a coil.
- Conductor tracks of the receiver coils 18 are thus arranged such that in a region of a first conductor loop 20 of the respective receiver coil
- the magnetic field manipulator 10 covers in the coupled state of the coupling elements 5, 6 a region of the printed circuit board 15 and thus a region of the receiver coil 18 as well as a region of the
- Magnetic field manipulator 10 covered, but of the
- Conductor of the receiver coil 18 is pivot angle dependent. It is important that the magnetic field manipulator 10 - relative to the adjacent region, in particular relative to the second coupling element 6 - has a different electrical and / or magnetic conductivity. It is also important that the receiver coil 18 has different areas in which the
- Angular measuring arrangement 23 created and substantially independent of external homogeneous magnetic fields and can detect a swivel angle ⁇ , in particular continuously detect. As can be seen from FIGS. 1 to 4, therefore, an angle measuring arrangement 23 is provided for detecting a pivoting angle ⁇ between the
- Pivot axis A at the apex P of the pivoting angle ⁇ forming coupling 4 coupled trailer 3, wherein the coupling 4 has a connected to the towing vehicle 2 first coupling element 5 and connected to the trailer 3 second coupling element 6.
- the coupling 4 is associated with a transducer 13 for generating a magnetic field and a measured value sensor 14 for detecting the magnetic field.
- an evaluation device not shown in the figures, for determining the swivel angle ⁇ as a function of the magnetic field detected by the measured value sensor 14.
- Angle measuring device 23 such as application-specific integrated circuits (ASIC), microcontroller and / or other passive components on the
- Circuit board 15 is arranged and thus integrated into the coupling 4.
- Data interface to the towing vehicle 2 and / or trailer 3 for transmitting the determined pivoting angle ⁇ and preferably further data of the further electronic components is preferably by a serial bus system, particularly preferably by a CAN bus, or another digital
- Interface particularly preferably SENT provided.
- an analog interface is provided.
- a towing vehicle 2 here means an object leading in a direction of travel of a train 1 and a following object under a trailer 3. It is therefore possible the angle measuring arrangement 23 described here also between two motor vehicles, in particular for towing one of the motor vehicles, or between two trailers, in particular at
- a first anticipatory trailer acts as a towing vehicle 2 and a second trailer following the first trailer acts as a trailer 3 in the sense of this
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017207850.2A DE102017207850A1 (en) | 2017-05-10 | 2017-05-10 | Angle measuring device |
PCT/EP2018/060883 WO2018206318A1 (en) | 2017-05-10 | 2018-04-27 | Angle-measuring assembly |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3622245A1 true EP3622245A1 (en) | 2020-03-18 |
Family
ID=62104266
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18721743.5A Withdrawn EP3622245A1 (en) | 2017-05-10 | 2018-04-27 | Angle-measuring assembly |
Country Status (4)
Country | Link |
---|---|
US (1) | US20200025550A1 (en) |
EP (1) | EP3622245A1 (en) |
DE (1) | DE102017207850A1 (en) |
WO (1) | WO2018206318A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3792599B1 (en) * | 2019-09-12 | 2023-05-03 | TE Connectivity Belgium BVBA | Sensor device for measuring the rotational position of an element |
US11614765B2 (en) * | 2020-02-14 | 2023-03-28 | Cts Corporation | Vehicle pedal including redundant dual output inductive position sensor with reduced coupling coil circuits |
US11745552B2 (en) * | 2021-02-19 | 2023-09-05 | Caterpillar Inc. | System for detecting failure of an articulated steering mechanism |
US12017699B2 (en) | 2021-02-19 | 2024-06-25 | Caterpillar Inc. | System for detecting failure of an Ackerman-type steering mechanism |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2682760A1 (en) * | 1991-10-22 | 1993-04-23 | Prototype Mecanique Ind | Contactless linear or angular displacement sensors |
DE102014206808A1 (en) * | 2014-04-09 | 2015-10-15 | Zf Friedrichshafen Ag | Device for detecting a trailer swivel angle |
DE102014224425A1 (en) * | 2014-11-28 | 2016-06-02 | Zf Friedrichshafen Ag | Ball carrier and method for producing a ball carrier for a trailer hitch, trailer hitch and method for measuring a bending angle |
DE102014224808A1 (en) | 2014-12-03 | 2016-06-09 | Zf Friedrichshafen Ag | Method for non-contact measurement of the angle between the longitudinal axes of a towing vehicle and a trailer or two trailers |
-
2017
- 2017-05-10 DE DE102017207850.2A patent/DE102017207850A1/en active Pending
-
2018
- 2018-04-27 WO PCT/EP2018/060883 patent/WO2018206318A1/en unknown
- 2018-04-27 US US16/499,578 patent/US20200025550A1/en not_active Abandoned
- 2018-04-27 EP EP18721743.5A patent/EP3622245A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
WO2018206318A1 (en) | 2018-11-15 |
DE102017207850A1 (en) | 2018-11-15 |
US20200025550A1 (en) | 2020-01-23 |
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