EP4128021A1 - Fahrzeug, verfahren, vorrichtung und computerprogramm für ein fahrzeug zum bestimmen einer verkehrsdichte aus zumindest einem bewegungsprofil eines fahrzeuges - Google Patents
Fahrzeug, verfahren, vorrichtung und computerprogramm für ein fahrzeug zum bestimmen einer verkehrsdichte aus zumindest einem bewegungsprofil eines fahrzeugesInfo
- Publication number
- EP4128021A1 EP4128021A1 EP21715846.8A EP21715846A EP4128021A1 EP 4128021 A1 EP4128021 A1 EP 4128021A1 EP 21715846 A EP21715846 A EP 21715846A EP 4128021 A1 EP4128021 A1 EP 4128021A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vehicle
- traffic density
- movement profile
- movement
- traffic
- 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
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0108—Measuring and analyzing of parameters relative to traffic conditions based on the source of data
- G08G1/0112—Measuring and analyzing of parameters relative to traffic conditions based on the source of data from the vehicle, e.g. floating car data [FCD]
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0125—Traffic data processing
- G08G1/0129—Traffic data processing for creating historical data or processing based on historical data
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0125—Traffic data processing
- G08G1/0133—Traffic data processing for classifying traffic situation
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/50—Context or environment of the image
- G06V20/56—Context or environment of the image exterior to a vehicle by using sensors mounted on the vehicle
Definitions
- the present invention relates to a method, a computer program, a vehicle and a device for determining a traffic density from at least one movement profile of a vehicle, in particular, but not exclusively, to a concept for determining a traffic density taking into account differently weighted movement components of a movement profile as a function of a Limit speed.
- Vehicles are an important means of transport for overcoming distances and are an important means of transport. As the number of vehicles increases, so does the density of traffic. Due to the increasing traffic density, there are more and more traffic jams and / or backlogs at red traffic lights. In order to distribute the traffic evenly, some concepts provide for the determination of the traffic density in order to shift the traffic from places with high traffic density to places with low traffic density.
- the document US 2015/0079932 A1 relates to a method and systems that can help protect the privacy of users when storing and / or using location data provided by the users' mobile devices.
- One method may include determining a location history associated with a first customer device, the location history including multiple time stamped location reports.
- the document CN 108734008 A relates to a method for assessing the degree of anonymity of anonymous lane data of a vehicle on the basis of a parking log. Parking log data can be correlated with lane data and thus an assignment to an individual driver can be made.
- the document US 2019/0116492 A1 describes a method in which a server device records position information on a communication terminal by means of a detection unit. At this time, an extraction unit extracts route information including one Start point and an end point from the position information. A type of means of movement of the communication terminal is identified by an identification unit based on the position information. A segment of the route information including the starting point and a segment including the end point are then masked by means of a masking unit in order to generate output route information. The masking unit defines a masked portion of the route information according to a type of the moving means.
- the document US 10,341,858 B1 describes a computer-implemented method for concealing a user location.
- a movement of a mobile user device can be detected with a movement sensor of the mobile user device.
- the method further comprises checking whether the movement of the mobile user device reaches a specified threshold value. When the motion threshold is reached, the user's data should be protected. This can be done by obscuring the actual location of the user.
- Embodiments are based on the core idea that a traffic density can be determined from at least one movement profile of a vehicle, with different movement components being able to be weighted differently in the movement profile.
- a basic idea here is to weight different movement components characteristic of special traffic situations, such as speed components characteristic of traffic light phases, traffic jams or other short stopping processes in road traffic. These special traffic situations can be detected with the aid of at least one sensor module, such as a camera, an acoustic sensor or a motion sensor. The sensor information recorded in this way can be used, for example, to generate a movement profile.
- the to that Movement components belonging to the movement profile can be compared with a defined limit speed and, in the case of a speed lower than this limit speed, have a lower weighting.
- Movement components at low speeds can falsify a determination of the traffic density.
- Embodiments create a method for determining a traffic density from at least one movement profile of a vehicle.
- the method includes obtaining the at least one motion profile from the vehicle.
- the method further comprises determining the traffic density based on the at least one movement profile, taking into account movement components from the at least one movement profile, the movement components taken into account being weighted differently as a function of a limit speed.
- Embodiments can thus determine a more reliable traffic density.
- the method can include sensory acquisition of information about at least one other road user. Furthermore, the determination of the traffic density from the at least one movement profile of the vehicle can be based on the information about the at least one other road user. By sensing the information about the at least one other road user, the traffic density can be determined more reliably.
- the sensory detection includes detection of a spatial distance from the at least one other road user.
- the detection of the spatial distance for example by means of a vehicle sensor system, can also contribute to a reliable determination of the traffic density.
- the spatial distance is related to the temporal distance via the speed. In principle, the traffic density is lower if the spatial distance to a vehicle driving ahead and / or following is small and vice versa.
- Determining the traffic density from the at least one movement profile of the vehicle can include detecting a particular traffic situation as a function of the at least one movement profile of the vehicle.
- the movement components taken into account for the traffic density can be weighted differently depending on the particular traffic situation. Movement components that falsify the traffic density For example, those from special traffic situations can be weighted less when determining the traffic density or even masked out.
- the particular traffic situation can be a traffic jam, a traffic light phase or another short stopping process. Movement components that can be traced back to traffic jams, traffic light phases or other short stopping processes can thus be included in the determination of the traffic density in an appropriately weighted manner.
- the limit speed can be greater than zero. Movement components that have a speed greater than the limit speed are accordingly included in the determination of the traffic density with a higher weighting than movement components below the limit speed, which can nevertheless be greater than zero.
- a limit speed greater than zero a distinction can be made, for example, between lower and higher speeds in the weighting. Since low speeds can negatively affect the reliability of the determination of the traffic density, the choice of a positive limit speed can have a positive effect on the reliability of the determination of the traffic density.
- the motion components can accordingly be weighted differently as a function of the limit speed in such a way that motion components with speeds below the limit speed are not taken into account.
- a weighting can include either a value of one or a value of zero, for example. The higher weighting can, for example, be a weighting with the value one. Movement components that are below the limit speed are therefore eliminated. Movement components that do not correctly reflect the traffic density can therefore be disregarded.
- the method can include obfuscating the motion profile.
- the concealment can depend on the traffic density.
- a degree of obfuscation can be determined by the traffic density.
- a degree of obfuscation can be lower in the case of a first, higher traffic density than in the case of a second, lower traffic density.
- the obfuscation can reduce a quality of a detected motion profile.
- the motivation for the obfuscation is the anonymization of the vehicle data, an assignment to one Vehicle should be made more difficult. In the case of a high traffic density, this assignment is more difficult due to the large number of vehicle data than in the case of a lower traffic density, since there only a few vehicles can be used for assignment.
- a lower degree of obfuscation is sufficient in the case of high traffic density than in the case of lower traffic density. As a result, the data can have a better quality at high traffic densities than at low traffic densities, since these are less falsified or obscured.
- Another exemplary embodiment is a computer program for carrying out a method described herein when the computer program runs on a computer, a processor, a control module or a programmable hardware component.
- a device for a vehicle which is designed to determine a traffic density from at least one movement profile of the vehicle, is a further exemplary embodiment.
- the device comprises at least one interface for receiving the at least one movement profile from the vehicle.
- the device further comprises a control module for determining the traffic density based on the at least one movement profile, taking into account movement components from the at least one movement profile, the movement components taken into account being weighted differently as a function of a limit speed.
- Another exemplary embodiment is a vehicle with a device described herein.
- FIG. 1 shows a block diagram of a flow chart of an exemplary embodiment of a method for determining a traffic density from at least one movement profile of a vehicle
- FIG. 2 shows a block diagram of an exemplary embodiment of a vehicle and an exemplary embodiment of a device for determining a traffic density from at least one movement profile of a vehicle;
- 3 shows a movement profile of a typical city trip of a vehicle in an exemplary embodiment
- 4 shows a weighted movement profile of a typical city trip of a vehicle in an exemplary embodiment.
- the method includes obtaining 12 the at least one motion profile from the vehicle.
- the method includes determining 14 the traffic density based on the at least one movement profile, taking into account movement components from the at least one movement profile, the movement components taken into account being weighted differently as a function of a limit speed.
- any ground-based means of transport come into consideration as vehicles.
- Examples of ground-based means of transport are passenger cars, trucks or two-wheelers.
- a movement profile of the vehicle in the sense of exemplary embodiments means a speed profile over time
- Movement profiles therefore include movement components that indicate the speed of the vehicle at a point in time.
- a movement profile therefore reproduces a time segment of the speed profile of a vehicle.
- a movement profile can also indicate speeds over a route section, since a route section in this sense is equivalent or proportional to a time section (due to the relationship between speed, distance and time).
- a traffic density in the sense of exemplary embodiments means a density of vehicles on a specific route at a specific point in time, such as on a roadway, for example.
- the density can be determined from an average temporal or spatial distance between the vehicles, taking into account the speed of the vehicles.
- a type of traffic can be taken into account, for example whether it is slow, flowing or stopping. Examples are traffic jams, red lights and / or other short stops or flowing traffic.
- Information about the movement profile can include information about the location, time and speeds of the movements of the vehicle. The information can result, for example, from measured values that are recorded by the sensors of the vehicle.
- the information about the traffic density can also include additional information, for example about a number of road users, a specific time unit, a specific route section or a specific length unit.
- different movement profiles can lead to different traffic densities.
- components of movement are dependent in exemplary embodiments weighted by a limit speed.
- the limit speed can specify a threshold value which determines its weighting for a given speed.
- the weighting of movement components can determine the degree of influence of the respective movement component on the traffic density. For example, movement components of a movement profile can also be completely masked out or eliminated when determining the traffic density, for example if their speeds are below the limit speed.
- FIG. 2 shows a block diagram of an embodiment of a vehicle 200 and an embodiment of a device 20 for determining a traffic density from at least one movement profile of the vehicle 200.
- the device 20 for determining the traffic density from the at least one movement profile of the vehicle 200 comprises at least one interface 22 for Obtaining the at least one movement profile from the vehicle 200.
- the device 20 further comprises a control module 24, which is coupled to the interface.
- the control module 24 is designed to determine the traffic density based on the at least one movement profile, taking into account movement components from the at least one movement profile. The motion components taken into account are weighted differently depending on a limit speed.
- FIG. 2 also shows a vehicle 200 with an exemplary embodiment with device 20. Vehicle 200 is shown in dashed lines because it is optional from the point of view of device 20.
- the at least one interface 22 of the device 20 can be designed as the contacts of the aforementioned module. In exemplary embodiments, they can also be designed as separate hardware. They can include memories that at least temporarily store the signals to be sent or received.
- the at least one interface 22 can be designed to receive electrical signals, for example as a bus interface or as an optical interface. In addition, it can be designed for radio transmission in exemplary embodiments and comprise a radio front end and associated antennas.
- the at least one interface 22 can be designed to communicate with sensors in the vehicle that supply corresponding information about the movement profile.
- control module 24 can comprise other elements of the aforementioned module.
- This can be any processor cores, such as digital signal processor cores (DSPs).
- DSPs digital signal processor cores
- Embodiments are not restricted to a specific type of processor core.
- Any processor cores or also several processor cores or microcontrollers for implementing the control module 24 are conceivable. Implementations in integrated form with other devices are also conceivable, for example in a control unit for a vehicle that additionally includes one or more other functions.
- the control module 24 can accordingly correspond to any component that can calculate or determine a traffic density from the movement profile.
- Exemplary embodiments can create a method for increasing the quality of anonymized vehicle data by analyzing movement profiles.
- data extracted from vehicles can be obscured by additive shifts for data protection reasons with regard to location and time, with the aim of concealing the identity of a data producer within an anonymization group.
- the size of the additive shift can be heavily dependent on the current volume of traffic. A high traffic density can result in a small displacement, whereas a low traffic density can result in a large displacement.
- the anonymization group can be defined.
- a group size (number of vehicles in the group) of the anonymization group indicates the uncertainty up to which a movement profile should be assignable.
- a movement profile can indeed be assigned to a group of vehicles with the group strength, but no longer clearly to individual vehicles in the group.
- the group strength of the anonymization group therefore represents a measure of the anonymization.
- a movement profile created in a vehicle can then only be assigned to a group of vehicles and no longer unambiguously to a vehicle. For example, the traffic density on a traffic sign with a speed limit of 50 km / h can be determined on the basis of one's own movement profile.
- the vehicle can now determine group anonymity.
- the group anonymity can represent the degree of anonymization, i.e. to what extent a concealment is carried out by means of a manipulation of place and time.
- the vehicle can then determine an anonymization factor that depends on the number of vehicles in the group. It can happen that several vehicles receive the same time stamp, e.g. all vehicles in the group receive the same time stamp. This can prevent a clear assignment of a movement profile to a vehicle, as a result of which an anonymization of the movement profile of a vehicle can be achieved. This means that with a large group, more anonymization is carried out than with a small group.
- a computer program with a program code can be used to carry out the method.
- the program code can be executed on a computer, a processor, a control module or a programmable hardware component.
- Traffic light phases, traffic jams or other short stopping processes are weighted separately in one embodiment. This procedure is based on the knowledge that these movement components usually have a negative influence on the quality of the anonymized data. Because, above all, low speeds can result in a greater time gap between vehicles and thus a lower specific traffic density or, consequently, a strong concealment.
- Embodiments therefore use a method that can analyze movement profiles for special situations and separately weight the speed components that are based on these.
- a special traffic situation can be a traffic jam, a traffic light phase or another short stopping process.
- the more reliably determined traffic density a more appropriate anonymization with higher data quality can be guaranteed.
- determining the traffic density from the at least one movement profile of the vehicle accordingly includes detecting a particular traffic situation. This traffic situation can depend on the at least one movement profile of the vehicle. The movement components taken into account for the traffic density are weighted differently depending on the particular traffic situation.
- the method 10 can include sensory acquisition of information about at least one other road user.
- the determination 14 of the traffic density from the at least one movement profile of the vehicle is then based, for example, on the information about the at least one other road user.
- the sensory detection includes, for example, detection of a spatial distance from the at least one other road user.
- the speeds from the movement profile form a relationship between the temporal and spatial distances between the vehicles.
- a distance to the vehicle traveling in front and / or the vehicle behind can also be taken into account.
- the spatial distance can be detected, for example, by means of a vehicle sensor system (optical, radar, lidar (from “light detection and ranging”), etc.).
- FIG. 3 shows a time window with a data extract from a typical city trip. From this, a negative correlation between the vehicle speed v 300 (dashed curve) and the time interval t d 301 (solid curve) to the vehicle traveling in front can be inferred.
- the temporal distance t d can be calculated from the spatial distance d to the vehicle in front dt A -
- FIG. 3 only reflects an example of a time scale. Equivalently, the time axis (abscissa) of this figure could be replaced / defined by a line axis. In addition, a Transformation of the equation, the spatial distance can also be calculated from the time interval and displayed. This is possible because a place clearly belongs at all times.
- the method 10 can thus include concealing the at least one movement profile, the concealment being dependent on the traffic density.
- the quality of the anonymized data can therefore be increased as follows. Those data points that belong to a movement profile below a certain limit speed v t can be excluded from determining the traffic density or given a weighting of zero. Accordingly, in the sense of some exemplary embodiments, the degree of concealment is lower in the case of a first, higher traffic density than in the case of a second, lower traffic density.
- g can be used to determine an average speed where v t can be the speed v at time t.
- the same procedure can be used to calculate further key figures for the traffic density, such as the mean time interval, for example.
- Fig. 4 shows a weighted movement profile of a typical city trip of a vehicle in one embodiment. In doing so, speeds below a limit speed of 20 km / h are masked out (weighted with zero) and only the time intervals associated with the speeds not masked out are used to determine the traffic density considered.
- the speed curve 400 is shown in dashed lines in FIG. 4, the time intervals 401 to the person in front are shown in solid lines.
- the limit speed can accordingly be greater than zero, for example 20 km / h.
- the motion components taken into account are weighted differently depending on the limit speed so that motion components with speeds below the limit speed are excluded, i.e. not taken into account.
- Limit speed v t can effectively reduce the anonymization group, a change can be taken into account and statistically corrected to protect an identity of a data producer.
- a correction factor can result from a ratio of all originally available data points and the number of data points belonging to v t > 20 km / h. In the example cited here in FIG. 4, this can result in an average time
- the recorded data can be sent to a central computer (for example to a back-end server) and processed there in order to ensure anonymization of the data generator.
- the movement profile created in the vehicle can be used to determine the traffic density.
- the anonymization factor can be used to determine the degree of concealment based on the number of road users at a specific time.
- the average length of the vehicles can play an important role in some exemplary embodiments.
- the traffic density can be determined in a certain route section. Suppose a truck comes with one every 30m Length of 25m. The spatial distance between the trucks can therefore be short. This would then mean a high traffic density. However, if only passenger cars with a length of 5 m are taken into account, the spatial distance between the passenger cars can be greater than in the case of trucks. The resulting traffic density would consequently be low. Since the length of the vehicles can consequently be falsified, this can also be taken into account in exemplary embodiments.
- Exemplary embodiments can furthermore be a computer program with a program code for executing one or more of the above methods or refer to them when the computer program is executed on a computer or processor. Steps, operations or processes of various methods described above can be carried out by programmed computers or processors. Examples can also include program storage devices, e.g. Digital data storage media that are machine, processor, or computer readable and encode machine, processor, or computer executable programs of instructions. The instructions perform or cause some or all of the steps in the procedures described above.
- the program storage devices may e.g. B. digital storage, magnetic storage media such as magnetic disks and tapes, hard disk drives or optically readable digital data storage media or be.
- Functions of various elements shown in the figures as well as the designated function blocks can be in the form of dedicated hardware, e.g. B “a signal provider”, “a signal processing unit”, “a processor”, “a controller” etc. as well as being implemented as hardware capable of executing software in conjunction with the associated software.
- the functions can be provided by a single dedicated processor, by a single shared processor, or by a plurality of individual processors, some or all of which can be shared.
- processor or “controller” is by no means limited to hardware that is exclusively capable of executing software, but can also include digital signal processor hardware (DSP hardware;
- DSP Digital Signal Processor
- network processor application-specific integrated circuit Application Specific Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA), Read Only Memory (ROM) for storing software, Random Access Memory (RAM), and non-volatile storage device (storage).
- ASIC Application Specific Integrated Circuit
- FPGA Field Programmable Gate Array
- ROM Read Only Memory
- RAM Random Access Memory
- non-volatile storage device storage
- a block diagram may represent a high level circuit diagram that implements the principles of the disclosure.
- a flowchart, sequence diagram, state transition diagram, pseudocode, and the like may represent various processes, operations, or steps, for example, essentially represented in computer-readable medium and thus performed by a computer or processor, whether or not such Computer or processor is shown explicitly.
- Methods disclosed in the description or in the claims can be implemented by a device having a means for performing each of the respective steps of these methods.
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- Traffic Control Systems (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020204045.1A DE102020204045A1 (de) | 2020-03-27 | 2020-03-27 | Fahrzeug, Verfahren, Vorrichtung und Computerprogramm für ein Fahrzeug zum Bestimmen einer Verkehrsdichte aus zumindest einem Bewegungsprofil eines Fahrzeuges |
| PCT/EP2021/057710 WO2021191337A1 (de) | 2020-03-27 | 2021-03-25 | Fahrzeug, verfahren, vorrichtung und computerprogramm für ein fahrzeug zum bestimmen einer verkehrsdichte aus zumindest einem bewegungsprofil eines fahrzeuges |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4128021A1 true EP4128021A1 (de) | 2023-02-08 |
Family
ID=75339728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21715846.8A Pending EP4128021A1 (de) | 2020-03-27 | 2021-03-25 | Fahrzeug, verfahren, vorrichtung und computerprogramm für ein fahrzeug zum bestimmen einer verkehrsdichte aus zumindest einem bewegungsprofil eines fahrzeuges |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4128021A1 (de) |
| CN (1) | CN115280391B (de) |
| DE (1) | DE102020204045A1 (de) |
| WO (1) | WO2021191337A1 (de) |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008003039A1 (de) | 2008-01-02 | 2009-07-09 | Daimler Ag | Verfahren zur Verkehrszustandsbestimmung in einem Fahrzeug |
| DE102012023561B4 (de) * | 2012-12-03 | 2014-08-14 | Audi Ag | Verfahren zur verkehrsflussbedingten Adaption von Anhaltevorgängen an ein synthetisch moduliertes Geschwindigkeitsprofil entlang einer mit einem Fahrzeug gefahrenen Strecke sowie Steuergerät zur Durchführung des Verfahrens |
| US9179304B2 (en) | 2013-09-18 | 2015-11-03 | Google Inc. | Device location history anonymization based on stop detection |
| DE102014223744A1 (de) * | 2014-11-20 | 2016-05-25 | Conti Temic Microelectronic Gmbh | Assistenzsystem zur Detektion von in der Umgebung eines Fahrzeuges auftretenden Fahrhindernissen |
| DE102015203233A1 (de) * | 2015-02-24 | 2016-08-25 | Bayerische Motoren Werke Aktiengesellschaft | Server, System und Verfahren zur Bestimmung einer Position eines Stauendes |
| CN108349495A (zh) * | 2015-10-28 | 2018-07-31 | 大众汽车(中国)投资有限公司 | 控制方法、控制装置和控制系统 |
| DE102015226650B4 (de) | 2015-12-23 | 2023-06-01 | Volkswagen Aktiengesellschaft | Verfahren und Vorrichtung zum anonymisierten Übermitteln eines ersten Werts zumindest eines Fahrparameters eines Fahrzeugs an eine externe Datenempfangseinheit |
| DE102017100871A1 (de) * | 2017-01-18 | 2018-07-19 | Valeo Schalter Und Sensoren Gmbh | Ermittlung eines Maßes für eine lokale Verkehrsdichte durch ein Fahrerassistenzsystem eines Kraftfahrzeugs |
| CN110494902A (zh) * | 2017-02-03 | 2019-11-22 | 西门子交通有限责任公司 | 用于管理地理位置中的交通的系统、设备和方法 |
| US10358129B2 (en) * | 2017-06-06 | 2019-07-23 | Toyota Motor Engineering & Manufacturing North America, Inc. | Systems and methods for dynamic vehicle control according to traffic |
| JP6866820B2 (ja) | 2017-10-12 | 2021-04-28 | トヨタ自動車株式会社 | サーバ装置、経路情報のマスキング処理方法およびそのプログラム |
| CN108734008B (zh) | 2018-04-26 | 2021-12-07 | 东华大学 | 基于停车记录对车辆匿名的移动轨迹数据去匿名的方法 |
| US10341858B1 (en) | 2018-06-13 | 2019-07-02 | Symantec Corporation | Systems and methods for obscuring user location |
-
2020
- 2020-03-27 DE DE102020204045.1A patent/DE102020204045A1/de active Pending
-
2021
- 2021-03-25 WO PCT/EP2021/057710 patent/WO2021191337A1/de not_active Ceased
- 2021-03-25 CN CN202180024746.4A patent/CN115280391B/zh active Active
- 2021-03-25 EP EP21715846.8A patent/EP4128021A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN115280391B (zh) | 2024-09-27 |
| WO2021191337A1 (de) | 2021-09-30 |
| DE102020204045A1 (de) | 2021-09-30 |
| CN115280391A (zh) | 2022-11-01 |
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