EP4514647A1 - Strassenfahrzeug mit einem stromabnehmer - Google Patents
Strassenfahrzeug mit einem stromabnehmerInfo
- Publication number
- EP4514647A1 EP4514647A1 EP23753803.8A EP23753803A EP4514647A1 EP 4514647 A1 EP4514647 A1 EP 4514647A1 EP 23753803 A EP23753803 A EP 23753803A EP 4514647 A1 EP4514647 A1 EP 4514647A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- height position
- contact wires
- road vehicle
- wires
- 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.)
- Pending
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
- B60L5/36—Current collectors for power supply lines of electrically-propelled vehicles with means for collecting current simultaneously from more than one conductor, e.g. from more than one phase
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/53—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells in combination with an external power supply, e.g. from overhead contact lines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L9/00—Electric propulsion with power supply external to the vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2200/00—Type of vehicles
- B60L2200/36—Vehicles designed to transport cargo, e.g. trucks
Definitions
- the invention relates to a road vehicle with a pantograph according to the preamble of claim 1.
- a pantograph of such a road vehicle is used to feed in electrical energy from a two-pole overhead line system while driving on a road route.
- the road section has a lane over which the contact wires of the overhead line system, designed as outward and return conductors, run.
- the current collector has contact assemblies for electrically contacting the contact wires and a lifting device for raising and lowering the contact assemblies.
- a height position of the contact assemblies lies between a lower rest position, in which the contact assemblies and contact wires are out of contact, and an upper contact position, in which the contact assemblies electrically contact the contact wires.
- Such road vehicles are exposed to the problem of changing relative positions between the current collector and contact wires when establishing and maintaining contact between the current collector and the contact wires. This is due to the driver's steering accuracy within the electrified lane, but can also be caused by the road topology or wind shear. However, the road vehicle can also consciously leave the electrified lane during overtaking maneuvers, evasive maneuvers or at road exits. Furthermore, the pantograph must be raised as quickly as possible after the start of an electrified route section and lowered again as close as possible before its end in order to utilize the electrified route section over as long as possible to feed in energy.
- the position of the contact wires in relation to the middle of the lane can also vary due to assembly tolerances in the overhead line system. due to construction sites on the road, because of new road surfaces or because of new road markings.
- the vehicle-side knowledge of the presence and relative position of the contact wires of an overhead line system is just as important for maximum utilization of an electrified lane for energy feed-in as is the knowledge of the height position of the contact assemblies of the pantograph.
- detection means for detecting the relative position of the current collector to the contact wires and a steering assistance system for automatically steering the vehicle depending on the detected relative position are known.
- the detection means have a position determination system for determining a current vehicle position of the vehicle on the lane and a database with stored contact wire positions of the contact wires along the lane.
- the detection means are designed to calculate the relative position from the currently determined vehicle position and from the assigned contact wire positions.
- the detection means additionally have contact position sensors for determining the current contact positions of the contact wires on the grinding strips.
- the detection means are designed to determine the current relative position of the vehicle to the contact wires from the specific contact positions.
- optical sensors such as laser scanners, which scan the position of the contact wires using laser radiation, are used.
- the relative position of the contact wires to the vehicle can be determined from the arrangement of the sensors on the vehicle.
- the optical functional principle of laser scanners is influenced by weather conditions such as sun, snow or rain.
- a vehicle control device for the automated control of an electric road vehicle for a path system with an overhead line system for supplying energy to the road vehicle is known. This is done using a current relative position of the road vehicle to infrastructure features, in particular road markings. The course of a target lane assigned to the lane-bound energy supply line of the overhead line system has been recorded centrally in relation to the infrastructure features. The road vehicle is automatically controlled to the target lane depending on the determined relative position. The determination of the relative lateral position of the road vehicle to the power supply line is subject to a tolerance chain made up of measurement tolerances of the sensor system of the vehicle control device and assembly tolerances of the overhead line system. In addition, there are rolling and rolling movements of the road vehicle, which do not allow the pantograph to be raised automatically, but only after permission from the driver.
- a current collector device for overhead line-operated vehicles is known from the international publication WO 2016/020300 Al.
- An arm of the current collector device is designed at one end for pivoting on a roof section of a catenary-operated vehicle and at the other end has a current collector head designed to collect electrical current in cooperation with a contact wire.
- Elevation means for controlled lifting and lowering are assigned to the arm, which act on a pneumatic basis and are designed to apply a predetermined, adjustable pressure force of the pantograph head to the contact wire, which is regulated to at least one setpoint.
- the pressure controller of the elevation means receives a setpoint, which is compared in a control unit with an actual position value of the arm.
- a sensor coupled to the arm acts as a rotary encoder and detects a current elevation angle of the arm and thus a height of the current collector head relative to a support and sends this signal to the control unit as an actual value.
- Such angle sensors are subject to high tolerances and do not allow an exact conclusion to be drawn about the height position of the current collector head.
- the invention is therefore based on the object of providing a road vehicle of the type mentioned at the outset, which overcomes the disadvantages of the prior art described.
- a generic road vehicle for example a heavy commercial vehicle - such as a truck or a bus - includes a pantograph for feeding in electrical energy from a two-pole overhead line system while driving on a stretch of road with a lane over which contact wires designed as outward and return conductors Catenary system runs.
- a lane is also referred to here as an electrified lane, over which the two contact wires are stretched parallel and symmetrically to a lane center at the same contact wire height above a road surface.
- the current collector has contact assemblies for electrically contacting the contact wires and a lifting device for raising and lowering the contact assemblies.
- the current collector can have a pantograph-like support frame, which can carry contact assemblies designed as rockers with grinding strips.
- the grinding strips are aligned transversely to a vehicle's longitudinal axis and have a working area within which a contact point between the contact wire and the contact assembly may lie.
- the support frame can be erected using a pneumatic lifting device, whereby the contact assemblies are raised.
- a height position of the contact assemblies moves between a lower rest position, in which contact assemblies and contact wires are out of contact, and an upper contact position, in which the contact assemblies electrically contact the contact wires.
- the road vehicle including the pantograph maintains a clearance gauge permissible for traffic outside electrified road routes.
- the road vehicle comprises a vehicle-side camera system for detecting a section of the environment, which is arranged and aligned in such a way that in the surrounding area Excerpt at least partially contains the current collectors and, if present, at least in sections the contact wires.
- the camera system includes a time-of-flight camera for capturing depth data of the area of the environment and a video camera for capturing contrast data of the area of the environment.
- the camera system further comprises an evaluation system which is designed to use the recorded depth data and the recorded contrast data to determine a presence thesis as to whether there are contact wires in the area section and, if there are contact wires, a lateral position and a height position of the contact wires, as well as a height position of the Determine contact assemblies.
- an electrified section of route can be optimally used by a road vehicle to feed in energy, since both the beginning and end of this section of route are automatically recognized from the presence thesis, whether there are contact wires, and from the lateral and vertical position of the contact wires
- the contact assemblies at the start of the route are not raised too late and the contact assemblies at the end of the route are not lowered too early. This applies in particular to obstacles on the route, such as low underpasses, where the electrified route section is interrupted.
- the lateral position of the contact wires relative to the working areas of the pantograph can be - if necessary. automatic - lateral steering movements are corrected, is wired in front of the current collector. Equally important for optimal operation of the road vehicle is a functional pantograph that can fully utilize its vertical working range and whose lifting and lowering behavior corresponds to specified target movement patterns.
- the evaluation system is designed to use the recorded depth data to determine a first presence thesis as to whether there are contact wires in the area section, and, if contact wires are present, a first lateral position and a first height position of the contact wires, as well as a to determine the first height position of the contact assemblies.
- the evaluation system is further designed to use the recorded contrast data to determine a second presence thesis as to whether there are contact wires in the area section and, if contact wires are present, a second lateral position and a second height position of the contact wires, as well as a second height position of the contact assemblies.
- the evaluation system is further designed to calculate the presence thesis from the first presence thesis and the second presence thesis, and, if contact wires are present, the lateral position from the first lateral position and the second lateral position, and the altitude from the first altitude and the second altitude, as well to determine the height position from the first height position and the second height position.
- the redundant recording of both depth data and contrast data of a section of the environment by the camera system ensures that the measurement results are of high quality, i.e. the specific presence theory, whether there are contact wires, and the specific lateral and vertical position of the contact wires.
- a control unit of the lifting device is designed to trigger a lifting of the contact assemblies from the lower rest position to the upper contact position if the specific presence theory showed that contact wires are present and if the specific lateral position and The height of the contact wires must always be within specified target ranges.
- an automatic lifting of the contact assemblies i.e. a so-called wiring or ironing of the current collector to the contact wires of the overhead line system, can be implemented in order to relieve the driver and to be able to operate the pantograph optimally independent of human influences. You can also automatically disconnect or To be ironed out if an increase in the height of the contact wires running up at the end of an electrified section of route is detected.
- the evaluation system is designed to determine a movement profile of the contact assemblies during the raising and/or during the lowering of the contact assemblies from height positions determined in succession and to compare this with a target movement profile.
- the comparison can be used, for example, to determine certain signs of aging in the pantograph, which may indicate that maintenance or repairs are required. This makes it possible to check whether the contact assemblies can still be raised to a specified maximum upper contact position without contact wire contact. It can also be checked whether the contact assemblies sink into the lower rest position too slowly or too quickly. If the contact assemblies fall too quickly, bouncing can occur in the lower rest position, which can lead to material fatigue. If the contact assemblies fall too slowly compared to the target movement, this can be noticeable indicate a blockage in an exhaust valve of a pneumatic lifting device.
- the evaluation system is designed to determine a height position or a first height position of the contact assemblies from depth data of at least one measuring point predefined on the current collector.
- the depth data that can be recorded by the time camera describes a spatial image of the surfaces of the pantograph recorded by the time camera.
- Predefined measuring points can be prominent edges, corners or surfaces of current collector components, for example grinding strips, or flat measuring objects attached to defined measuring points, which can be easily found in the depth data of the time-of-flight camera. While the current collector is being raised and lowered, its spatial positions are tracked, with each spatial position of the at least one measuring point being correlated to a height position of the contact assemblies.
- the evaluation system is designed to determine a height position or second height position of the contact assemblies from contrast data of at least one marking pre-positioned on the current collector.
- the pantograph By positioning one or more markings on the pantograph, its position and thus the height position of the contact assemblies can be determined from contrast data if one or more features of a marking that can be detected by the video camera when the pantograph is raised or lowered clearly correlate with the height position of the contact assemblies.
- the feature of a marking can, for example, be its distance from the video camera, as well as its shape and size that can be detected by the video camera, a pattern it contains, its reflection behavior or its detectable grayscale section.
- the at least one marking is designed as a two-dimensional pattern.
- the two-dimensional pattern can be formed, for example, by printing a quick response code, QR code for short, or an augmented reality marker, AR marker for short, on the pantograph, for example on its support frame.
- QR code quick response code
- AR marker augmented reality marker
- Such patterns allow the marking to be determined in three dimensions using the video camera's contrast data from the image scale and distortion.
- the at least one marking is designed as a three-dimensional element.
- the marking can, for example, be designed as a cuboid, the side surfaces of which are recorded by the video camera with different contrast data - such as different colors.
- the marking is attached to the current collector, for example on the support frame, and changes its distance and orientation to the video camera depending on the height position of the contact assemblies. The size and distortion of the side surfaces of the cuboid marking given by the contrast data enable the height position of the contact assemblies to be determined.
- the at least one marking is variably covered by a displacement mimic coupled to the current collector.
- a marking with varying shades of gray can be variably covered by a cover that can be moved in a guide.
- the aperture can be adjusted by the shifting facial expressions depending on the position of the support frame can be opened or closed to different extents when the contact assemblies are raised or lowered, so that depending on the height position of the contact assemblies, a portion of the grayscale marking assigned to them is visible through the video camera.
- the corresponding contrast data of the visible grayscale marking allows conclusions to be drawn about the height position of the contact assemblies.
- the at least one marking has an angle-dependent reflection behavior. This can be done by coating with a dichroic material or a material that reflects light from different directions to varying degrees due to other polarization effects.
- the coated marking is attached to the current collector, for example to the support frame, in such a way that it is recorded by the video camera from different angles in different height positions of the contact assemblies. The height position of the contact assemblies can be deduced from the contrast data of the marking.
- the evaluation system is designed to determine the size and duration of the arc from the contrast data when an arc is formed between contact assemblies and contact wires.
- Arcs can occur in the event of contact interruptions due to the high electrical potential difference between contact assemblies and contact wires and can cause wear and damage to the pantograph and overhead line system.
- the frequency, extent and duration of such arcs can be recorded from the contrast data from the video camera and can be used as an automated indication of necessary maintenance and repair work.
- the pantograph has a pantograph-like support frame.
- the supporting frame supports The contact assemblies on the contact wire side and is supported on a base frame on the vehicle side.
- the support frame designed as a pantograph can have a forearm that is supported in an articulated manner on a base frame and two upper arms that are articulated to this and carry the contact assemblies, which together form a half-scissor.
- the base frame can be arranged behind a driver's cab of the road vehicle in the direction of travel and is supported symmetrically to a vehicle longitudinal center on a chassis of the road vehicle.
- Each contact assembly is designed as a rocker arranged rotatably around a crown tube, on which two grinding strips arranged in parallel and one behind the other in the direction of travel are mounted. I extend the grinding strips and crown pipes transversely to the longitudinal axis of the vehicle.
- the rockers are connected to the forearm via guide rods and the upper arm is connected to the base frame via a coupling rod in a manner known per se, so that when the forearm is raised by the lifting device, the upper arm is also forcibly raised and thereby creates a loop defined by the loops plane is moved parallel upwards.
- the knee of the support frame, formed by the forearm and upper arm points in the direction of travel, so that the support frame is placed on the driver's cab in the lower rest position of the contact assemblies.
- the camera system is arranged in the center of the vehicle side on the base frame.
- a field of view of the camera system is oriented vertically upwards.
- the camera system is arranged to the side of a vehicle's longitudinal center and in the direction of travel in front of the base frame and behind a wind deflector on the driver's cab.
- the lateral arrangement is due to the space required by the support frame, which is placed above the driver's cab in the rest position of the contact assemblies.
- the camera system is protected from the effects of the weather by a wind deflector extending from the front edge of the driver's cab.
- the camera system can be aligned upwards in such a way that the support frame and contact assemblies lie in the area of the environment that can be detected through the field of view.
- the pantograph which is rigidly connected to the vehicle frame, can be used as a resting reference system, in which the camera system with the suspended driver's cab carries out diving and rolling movements relative to the pantograph while driving. This allows the measurement results for the lateral position and height position of the contact wires and the height position of the contact assemblies to be corrected by the measurement component attributable to the movements of the driver's cab.
- FIG. 1 shows a road vehicle according to the invention in side view
- FIG. 2 shows the road vehicle from FIG. 1 schematically illustrated in a top view.
- a road vehicle 1 for example a semi-trailer tractor, includes a current collector 2 for feeding in electrical energy from a two-pole overhead line system 3 while driving on a road route S.
- a current collector 2 for feeding in electrical energy from a two-pole overhead line system 3 while driving on a road route S.
- the overhead line system 3 which is known per se, only the contact wires 4 designed as electrical outward and return conductors are shown.
- the two contact wires 4 are stretched over a lane L of the road route S parallel and symmetrically to a lane longitudinal center LM at the same contact wire height H4 over a road surface of the lane L.
- the current collector 2 has two contact assemblies 5 for electrically contacting the contact wires 4 and a lifting device 6 for raising and lowering the contact assemblies 5.
- the pantograph 2 has a pantograph-like shape Support frame 15, which carries contact assemblies 5 designed as rockers 19 with grinding strips 20.
- the loop strips 19 are aligned transversely to a direction of travel X and have a working area within which a contact point between the contact wire 4 and the contact assembly 5 may lie.
- the support frame 15 is raised by means of a lifting device 6 designed as an air bellows, whereby the contact assemblies 5 are raised.
- a height position H of the contact assemblies 5 moves between a lower rest position HO, in which contact assemblies 5 and contact wires 4 are out of contact, and an upper contact position HK, in which the contact assemblies 5 electrically contact the contact wires 4.
- the road vehicle 1 including the pantograph 2 maintains a clearance profile S permissible for traffic outside electrified road routes.
- the road vehicle 1 comprises a camera system 7 for detecting a section of the environment U, which is arranged and aligned in such a way that the current collector 2 and, if present, at least in sections the contact wires 4 are located in the section of the environment U.
- the camera system 7 includes a transit time camera 8 for recording depth data DT of the environmental section U and a video camera 9 for recording contrast data DK of the environmental section U.
- the camera system 7 further includes an evaluation system 10, which is designed to determine from the recorded depth data DT and from the recorded contrast data DK a presence thesis PT, whether there are contact wires 4 in the environmental section U, and, if contact wires 4 are present, a side position Y and to determine a height Z of the contact wires 4 and a height position H of the contact assemblies 5.
- the evaluation system 10 includes known means for electronically processing the recorded depth DT and contrast data DK, such as computers or computer systems, data storage and communication means as well as computer programs and stored target value ranges as well as target movement sequences, which are described in more detail below.
- Two different cameras 7 and 8 are available for determining the measurement results "Presence thesis PT, whether a contact wire 4 is present", "lateral position Y of the contact wires 4", “height position Z of the contact wires 4" and “height position H of the contact assemblies 5", which, on the one hand, record depth data DT and, on the other hand, contrast data DK of one and the same environmental section U.
- the measurement results for contact wires 4 and pantographs 2 can each be determined individually based on the depth data DT or the contrast data DK, but also at the same time based on the depth data DT and the contrast data DK. This means that measurement results can be determined with high quality.
- an electrified route section S can be optimally used by a road vehicle 1 to feed in energy, since both the beginning and end of this route section S depend on the presence thesis PT, whether contact wires 4 are present, and on the lateral Y and altitude Z of the contact wires 4 are automatically recognized and therefore the contact assemblies 5 are not raised too late at the start of the route and the contact assemblies 5 are not lowered too early at the end of the route. This applies in particular to obstacles to the route, such as low underpasses, where the electrified route section S is interrupted. By corroborating the presence thesis PT from two data sources, a false detection of support cables instead of the contact wires 4 can, for example, be ruled out.
- the lateral position Y of the contact wires 4 relative to the working areas of the pantograph 2 can be determined by - if necessary. automatic - lateral steering movements are corrected before the pantograph 2 is wired up. Equally important for optimal operation of the road vehicle 1 is a functional pantograph 2, which can fully utilize its vertical working range and whose lifting and lowering behavior corresponds to predetermined target movement patterns.
- the evaluation system 10 is designed to use the recorded depth data DT to produce a first presence thesis PT1 as to whether contact wires 4 are present in the environmental section U, and, if contact wires 4 are present, a first lateral position Y1 and a first elevation ZI of the contact wires 4, as well as a first To determine the height position Hl of the contact assemblies 5.
- the evaluation system 10 is further designed to use the recorded contrast data DK to produce a second presence thesis PT2 as to whether contact wires 4 are present in the environmental section U, and, if contact wires 4 are present, a second lateral position Y2 and a second height position Z2 of the contact wires 4, as well as a to determine the second height position H2 of the contact assemblies 5.
- the latter can be compared with each other and/or with stored target values, average values or weighted average values can be formed, measurement outliers can be ignored or the measurement results can be output with the resulting confidence values become .
- a control unit 11 of the lifting device 6 is designed to raise the contact assemblies 5 from the lower rest position HO to the upper contact position HI if the specific presence thesis PT showed that contact wires 4 are present and if the specific lateral position Y and altitude Z the contact wires 4 each within specified limits target ranges. Due to the high level of security of correct detection of contact wires 4 and their relative position Y and Z to the road vehicle 1 that can be achieved with the camera system 7, an automatic lifting of the contact assemblies 5, i.e. a so-called wiring or ironing of the current collector 2 to the contact wires 4 of the overhead line system 3, be implemented in order to relieve the driver and to be able to operate the pantograph 2 optimally regardless of human influences. You can also automatically disconnect or To be ironed out if an increase in the altitude Z of the contact wires 4 running up in front of an end of an electrified route section S is detected.
- the evaluation system 10 is designed to determine a movement profile of the contact assemblies 5 during the raising and/or during the lowering of the contact assemblies 5 from height positions H determined in succession and to compare this with a target movement profile. Through the comparison, for example, certain signs of aging of the pantograph 2 can be determined, which can indicate the need for maintenance or repairs. This makes it possible to check whether the contact assemblies 5 can still be raised to a predetermined maximum upper contact position HI without contact wire contact. It can also be checked whether the contact assemblies 5 sink into the lower rest position HO too slowly or too quickly. If the contact assemblies 5 fall too quickly, bouncing can occur in the lower rest position HO, which can lead to material fatigue. If the contact assemblies 5 fall too slowly compared to the target movement pattern, this may indicate a blockage in an exhaust valve of a pneumatic lifting device 6.
- the evaluation system 10 is designed to determine a height position H or a first height position H1 of the contact assemblies 5 from depth data DT of at least one measuring point P predefined on the current collector 2.
- the depth data DT that can be recorded by the time-of-flight camera 8 describes a spatial Visual image of the surfaces of the current collector 2 recorded by the time camera 8.
- Predefined measuring points P can be prominent edges, corners or surfaces of current collector components, for example grinding strips 20, or flat measuring objects attached to defined measuring points, which can be easily found in the depth data DT of the transit time camera 8. While the current collector 2 is raised and lowered, its spatial positions are tracked, with each spatial position of the at least one measuring point P being correlated to a height position H of the contact assemblies 5.
- the evaluation system 10 is designed to determine a height position H or second height position H2 of the contact assemblies 5 from contrast data DK of at least one marking M pre-positioned on the current collector 2. By positioning one or more markings M on the pantograph 2, its position and thus the height position H of the contact assemblies 5 can be determined from contrast data DK if one or more features of a marking M that can be detected by the video camera 9 are clearly present when the pantograph 2 is raised or lowered correlate with the height position H of the contact assemblies 5.
- the at least one marking M shown here is variably covered by a displacement mimic coupled to the current collector 2 .
- a marking M with varying gray levels is variably covered by a diaphragm 13 that can be moved in a guide 12 .
- the aperture 13 can be opened or closed to different extents by a coupling arm 14 of the displacement mimic depending on a position of the support frame 15 when the contact assemblies 5 are raised or lowered, so that depending on the height position H of the contact assemblies 5, a proportion of the gray scale marking M assigned to this is transmitted the video camera 9 is visible.
- the corresponding contrast data DK of the visible gray scale marking M allow a conclusion to be drawn about the height position H of the contact assemblies 5.
- the at least one marking can be as a two-dimensional pattern, such as a QR code or an AR marker, and/or as a three-dimensional element, such as a cuboid with differently contrasting side surfaces, and/or as a coating having an angle-dependent reflection behavior, for example made of a dichroic Material, be trained.
- the evaluation system 10 is also designed to determine the size and duration of the arc from the contrast data DK when an arc forms between contact assemblies 5 and contact wires 4 .
- Arcs can occur in the event of contact interruptions due to the high electrical potential difference between contact assemblies 5 and contact wires 4 and cause wear and damage to pantographs 2 and overhead line system 3.
- the frequency, extent and duration of such arcs can be recorded from the contrast data DK of the video camera 9 and can be used as an automated indication of necessary maintenance and repair work.
- the pantograph-like support frame 15 of the current collector 2 has a lower arm 21 which is supported in an articulated manner on the base frame 16 and two upper arms 22 which are articulated to this and carry the contact assemblies 5 and which together form a half-scissor.
- the base frame 16 is arranged behind the driver's cab 17 of the road vehicle 1 in the direction of travel X and is supported symmetrically to a vehicle longitudinal center on a chassis 23 of the road vehicle 1.
- Each contact assembly 5 is designed as a rocker 19 which is rotatably arranged around a crown tube 24 and on which two grinding strips 20 arranged parallel and one behind the other in the direction of travel X are mounted. Grinding strips 20 and crown tubes 24 extend transversely to a vehicle longitudinal axis X.
- the rockers 19 are connected to the forearm 21 and the upper arm 22 via guide rods (not shown). connected to the base frame 16 via a coupling rod (not shown) in a manner known per se, so that when the forearm 21 is raised by the lifting device 6, the upper arm 22 is also forcibly raised and a grinding plane defined by the grinding strips 20 is displaced parallel upwards becomes .
- the knee of the support frame 15, formed from the forearm 21 and upper arm 22, points in the direction of travel X, so that the support frame 15 is placed on the driver's cab 17 in the lower rest position HO of the contact assemblies 5.
- the camera system 7 is arranged to the side of a vehicle's longitudinal center and in the direction of travel X in front of the base frame 16 and behind a wind deflector 18 on the driver's cab 17.
- the lateral arrangement is due to the space required by the support frame 15 placed above the driver's cab 17 in the rest position HO of the contact assemblies 5. Due to the arrangement behind the wind deflector 18 which protrudes from the front edge of the driver's cab 17, the camera system 7 is protected from the effects of the weather.
- the camera system 7 can be aligned obliquely upwards in such a way that the support frame 15 and contact assemblies 5 lie in the environmental section U that can be detected through the field of view.
- the current collector 2 which is rigidly connected to the vehicle frame 23, can be used as a rest reference system, since the camera system 7 with the sprung driver's cab 17 carries out diving and rolling movements relative to the current collector 2 while driving. This allows the measurement results for the lateral position Y and height Z of the contact wires 4 and the height position H of the contact assemblies 5 to be corrected by the measurement component attributable to the movements of the driver's cab 17.
- the camera system 7 could also be arranged on the base frame 16 in the center of the vehicle side. A field of view of the camera system 7 is then aligned vertically upwards. As a result, both existing contact wires 4 as well as the contact assemblies 5 and partly the support frame 15 fall into the environmental section U that can be detected by the field of view of the camera system 7.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022208846.8A DE102022208846A1 (de) | 2022-08-26 | 2022-08-26 | Straßenfahrzeug mit einem Stromabnehmer |
| PCT/EP2023/070422 WO2024041824A1 (de) | 2022-08-26 | 2023-07-24 | Strassenfahrzeug mit einem stromabnehmer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4514647A1 true EP4514647A1 (de) | 2025-03-05 |
Family
ID=87570058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23753803.8A Pending EP4514647A1 (de) | 2022-08-26 | 2023-07-24 | Strassenfahrzeug mit einem stromabnehmer |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4514647A1 (de) |
| CN (1) | CN119731042A (de) |
| DE (1) | DE102022208846A1 (de) |
| WO (1) | WO2024041824A1 (de) |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5481862B2 (ja) | 2009-01-22 | 2014-04-23 | 株式会社明電舎 | パンタグラフ高さ測定装置及びそのキャリブレーション方法 |
| JP5321235B2 (ja) | 2009-05-15 | 2013-10-23 | 株式会社明電舎 | パンタグラフ変位測定装置及びトロリ線硬点検出方法 |
| DE102010053528A1 (de) | 2010-11-30 | 2012-05-31 | Dialogika Gesellschaft Für Angewandte Informatik Mbh | System für das automatische An- und Abdrahten während der Fahrt eines Oberleitungsfahrzeuges |
| DE102012205276A1 (de) | 2012-03-30 | 2013-10-02 | Siemens Aktiengesellschaft | Nicht schienengebundenes Fahrzeug |
| DE102014111264A1 (de) | 2014-08-07 | 2016-02-11 | Kummler + Matter Ag | Stromabnehmervorrichtung und Verwendung einer solchen |
| DE102014111260A1 (de) | 2014-08-07 | 2016-02-11 | Kummler + Matter Ag | Vorrichtung zur Fahrleitungsbeleuchtung sowie Stromabnehmersystem |
| DE102014219466A1 (de) | 2014-09-25 | 2016-03-31 | Siemens Aktiengesellschaft | Transportsystem mit einem über eine Oberleitungsanlage mit elektrischer Energie versorgbaren, nicht schienengebundenen Fahrzeug |
| JP6424362B2 (ja) | 2014-09-26 | 2018-11-21 | 株式会社明電舎 | 線条計測装置及びその方法 |
| JP6475178B2 (ja) | 2016-03-10 | 2019-02-27 | 日立建機株式会社 | 電気駆動車両 |
| DE102016211483A1 (de) | 2016-06-27 | 2017-12-28 | Siemens Aktiengesellschaft | Automatisiertes Ansteuern einer Sollfahrspur zur kontinuierlichen Versorgung mit elektrischer Energie |
| JP6669294B1 (ja) * | 2019-03-07 | 2020-03-18 | 株式会社明電舎 | パンタグラフ変位測定装置及びトロリ線硬点検出方法 |
| KR102276634B1 (ko) | 2020-09-15 | 2021-07-13 | 엠아이엠테크 주식회사 | 차상 설치식 전동차 팬터그래프 이상 검지 시스템 및 그의 처리 방법 |
-
2022
- 2022-08-26 DE DE102022208846.8A patent/DE102022208846A1/de not_active Withdrawn
-
2023
- 2023-07-24 CN CN202380061744.1A patent/CN119731042A/zh active Pending
- 2023-07-24 EP EP23753803.8A patent/EP4514647A1/de active Pending
- 2023-07-24 WO PCT/EP2023/070422 patent/WO2024041824A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| CN119731042A (zh) | 2025-03-28 |
| DE102022208846A1 (de) | 2024-02-29 |
| WO2024041824A1 (de) | 2024-02-29 |
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