Method and device for determining the speed value of a vehicle

Abstract

Method for determining the speed value of a vehicle, in particular a single-track vehicle, such as an e-bike, wherein at least one RFID transponder is arranged on at least one moving vehicle element of the vehicle and at least one RFID reader is arranged on at least one further vehicle element of the vehicle for determining the speed value.

Description

[0001] The invention relates to a method for determining a speed value of a vehicle, in particular a single-track vehicle, such as an e-bike. The invention further relates to a measuring arrangement designed to carry out the method according to the invention. Furthermore, the invention relates to a drive unit with a measuring arrangement according to the invention and to a vehicle, in particular a single-track vehicle, such as an e-bike, with the drive unit.

[0002] Although generally applicable to vehicles, the following invention is explained using an eBike. State of the art

[0003] It has become common practice to use a pulse-based sensor, or pulse sensor for short, on a vehicle wheel to measure speed. This sensor delivers one or more pulses per wheel revolution, based on which a speed can be calculated using the wheel circumference. This signal is used in eBikes in a conventional way, among other things, to cut off rider assistance above a certain speed, for example, to comply with legal requirements or to calculate the speed for ABS. Hall sensors, reed contacts, or inductive sensors are often used on eBikes. Disclosure of the invention

[0004] According to the invention, the present invention provides a method for determining a speed value of a vehicle, in particular a single-track vehicle, such as an e-bike, wherein at least one RFID transponder is arranged on at least one moving vehicle element of the vehicle and at least one RFID reader is arranged on at least one further vehicle element of the vehicle for determining the speed value.

[0005] In one embodiment, in particular in a preferred embodiment, the present invention provides a method for determining a speed value of a moving vehicle element, in particular a vehicle element of a single-track vehicle, such as an e8ike, wherein at least one RFID transponder is arranged on at least one moving vehicle element of the vehicle and at least one RFID reader is arranged on at least one further vehicle element of the vehicle for determining the speed value.

[0006] The term "moving vehicle element" is to be understood in the broadest sense and refers, in particular in the description, preferably in the claims, to a moving component of the vehicle. The moving component can move as a result of vehicle movement or be moved directly or indirectly by a vehicle drive. The moving vehicle element can, for example, be a transmission component of a drive unit, preferably a gear, pinion, belt, or the like. The moving vehicle element can also be a connecting element, for example a chain or belt, from the drive unit to a switchable transmission. In the simplest case, the moving vehicle element can also be a wheel or a component of a wheel. An RFID transponder can be arranged on a moving vehicle wheel, for example on a rim well, a tire, a rim tape, or the inside of a rim.

[0007] The term "vehicle speed value" is to be understood in the broadest sense and refers, in particular in the description, preferably in the claims, to an absolute value of a vehicle's speed value. The vehicle's speed value is, in particular, the vehicle's speed value relative to a stationary reference system.

[0008] The term "speed value of the at least one moving vehicle element" is to be understood in the broadest sense. The speed value of the at least one moving vehicle element can be a value of an angular velocity, a path velocity, or the like and refers in particular in the description, preferably in the claims, to, for example, an amount of an angular velocity or an amount of the path velocity.

[0009] Preferably, the vehicle speed value is determined taking into account the speed value of the at least one moving vehicle element. In this preferred embodiment, for example, the speed value of the at least one moving vehicle element can be used directly or indirectly to determine the vehicle speed value. For example, the vehicle speed value can be determined from the speed of a connecting element, taking into account the geometric relationships of the vehicle.

[0010] Preferably, the at least one moving vehicle element and the at least one further vehicle element move relative to one another. In particular, as a result of a rotation of the at least one moving vehicle element, for example a vehicle wheel, the at least one RFID transponder arranged on the at least one moving vehicle element and the at least one RFID reader arranged on the at least one further vehicle element move relative to one another.

[0011] The term eBike should be understood in particular as a vehicle powered by muscle and / or motor power, especially as a Pedelec or S-Pedelec, and includes not only single-track Pedelecs and S-Pedelecs but also two-track Pedelecs and S-Pedelecs.

[0012] Preferably, the method comprises the following further steps: - Transmitting a transmission signal by the at least one RFID reader, - Receiving the transmission signal by the at least one RFID transponder, - transmitting a received signal by the at least one RFID transponder, - Receiving the received signal by at least one RFID reader,

[0013] Preferably, the method comprises the following further steps: - Sampling signal values ​​of the received signal, in particular with a specific sampling rate, - Determining magnitude values ​​of at least one signal property of the received signal based on the sampled signal values.

[0014] Preferably, the method comprises the following further steps: - Determining relative positions and / or relative distances of the at least one RFID transponder and the at least one RFID reader to each other based on the determined size values ​​of the at least one signal property, - Determining times corresponding to the relative positions and / or relative distances, - Determining a movement speed value of the at least one moving vehicle element based on the times corresponding to the relative positions and / or relative distances and the relative positions and / or relative distances, and

[0015] Preferably, the method comprises the following further step: - Determining the speed value of the vehicle based on the movement speed value of the at least one moving vehicle element.

[0016] In one embodiment, the present invention provides a measuring arrangement comprising: - at least one RFID transponder on at least one moving vehicle element of the vehicle, designed to receive a transmission signal and transmit a reception signal, - at least one RFID reader on at least one further vehicle element of the vehicle, in particular designed to transmit the transmission signal and receive the reception signal, wherein the at least one rotating vehicle element and the at least one further vehicle element are movable relative to each other, - at least one sampling unit, in particular designed to sample signal values ​​of the received signal at a specific sampling rate, - at least one determination unit, in particular designed to determine magnitude values ​​of at least one signal property of the received signal based on the sampled signal values, to determine relative positions and / or relative distances of the at least one RFID transponder and the at least one RFID reader to one another based on the sampled magnitude values ​​of the at least one signal property, to determine times corresponding to the relative positions and / or relative distances, to determine a movement speed value of the at least one moving vehicle element based on the times corresponding to the relative positions and / or relative distances and the relative positions and / or relative distances, and to determine the driving speed value of the vehicle based on the movement speed value of the at least one moving vehicle element.

[0017] In one embodiment, the present invention provides a drive unit, in particular for a single-track vehicle, such as an eBike.

[0018] In one embodiment, the present invention provides a vehicle, in particular a single-track vehicle, such as an eBike.

[0019] The terms "RFID transponder" and "RFID reader" are to be understood in the broadest sense and refer, in particular in the description, preferably in the claims, to components for data transmission using RFID (radiofrequency identification). An RFID reader can have an antenna and a microprocessor and generate the transmission signal in the form of a high-frequency alternating electromagnetic field for interrogation, to which an RFID transponder is exposed. The RFID transponder can have an antenna and a microprocessor and, using an integrated microchip, can decode the transmission signal transmitted by the RFID reader and can encode and modulate its response in the form of the reception signal in the radiated electromagnetic field by changing its antenna impedance and reflecting the electromagnetic field emitted by the RFID reader. This is a passive transmission process.Active transmission processes are also conceivable, particularly in the ultra-high frequency range (UHF), preferably between 300 MHz and 3000 MHz.

[0020] The term “signal property” is to be understood in the broadest sense and refers in particular in the description, preferably in the claims, to a quantity for describing an incoming signal in the form of electromagnetic waves or to a quantity for describing differences, such as a phase difference or a frequency modulation due to the Doppler effect, of an outgoing signal in comparison to the later incoming signal in the form of electromagnetic waves.

[0021] In other words, in one embodiment of the present invention, a query in the form of the transmitted signal is first transmitted by the at least one RFID reader to the at least one RFID transponder. The at least one RFID transponder then responds with the received signal, provided it has received the transmitted signal. The received signal is in the form of electromagnetic waves and is received by the at least one RFID reader.

[0022] Further preferably, signal values ​​of the received signal are subsequently sampled at a sampling rate, in particular a specific sampling rate.

[0023] Preferably, the received signal has various signal properties, such as an amplitude or a frequency.

[0024] Further preferably, magnitude values ​​of at least one signal property are determined on the basis of the sampled signal values.

[0025] In particular, the magnitude values ​​of the signal properties change with the relative position and / or the relative distance of the at least one RFID transponder and the at least one RFID reader to each other.

[0026] Preferably, the relative positions and / or relative distances of the at least one RFID transponder and the at least one RFID reader are determined based on the determined magnitude values ​​of at least one signal property of the received signal. Determining the relative positions and / or relative distances may include estimating the relative positions and / or relative distances.

[0027] Further preferably, times corresponding to the relative positions and / or relative distances are determined. Based on the times corresponding to the relative positions and / or relative distances and the relative positions and / or relative distances, a movement speed value of the at least one moving vehicle element is determined.

[0028] One of the advantages achieved is that the use of RFID makes the process particularly resistant to electromagnetic and magnetic interference, making it extremely robust. This high level of robustness is also attributable to the fact that the radiation occurs in a very narrow frequency band. Furthermore, the RFID transponders in particular are particularly lightweight, so that any imbalance caused by a non-rotationally symmetrical arrangement of one or more RFID transponders on a moving vehicle element is negligible. Due to their small dimensions, RFID transponders can be easily installed on a moving vehicle element. Furthermore, RFID transponders and RFID readers can be easily retrofitted and customized.

[0029] Further features, advantages and further embodiments of the invention are described below or will become apparent thereby.

[0030] According to an advantageous development of the invention, an amplitude of the received signal and / or a frequency of the received signal is selected as the at least one signal property. The amplitude and frequency of the received signal received by the at least one RFID reader can change with a local change in the distance between the at least one RFID transponder and the at least one RFID reader. Thus, an amplitude or frequency modulation arises as a result of the change in the relative position and / or the relative distance between the at least one RFID transponder and the at least one RFID reader. The amplitude modulation can be attributed to a change in the amplitude of the signal with a change in the relative position and / or the relative distance, with the amplitude of the signal decreasing with increasing distance. The frequency modulation can occur as a result of the Doppler effect.The amplitude and frequency of the received signal can be determined particularly easily.

[0031] According to an advantageous development of the invention, a phase difference of the received signal is selected as the at least one signal property, wherein the phase difference is determined by demodulating the received signal. Preferably, the demodulation is performed using the in-phase and quadrature method. By determining the phase difference, a particularly efficient method for determining a driving speed value can be provided.

[0032] It is also conceivable that a sufficiently high signal value of the received signal could be selected as at least one signal property. This makes the process particularly simple and requires little computational effort. An RFID transponder can function analogously to a 1-bit sensor.

[0033] According to an advantageous development of the invention, at least two RFID readers are arranged, and the relative positions and / or relative distances are determined by triangulation. If a position in one spatial dimension, for example, the x-axis, is known, two RFID readers are sufficient to determine a relative position and / or a relative distance in the two remaining spatial dimensions. The relative positions and / or relative distances thus determined can be used for plausibility checks. This also allows the absolute position in space, relative to the RFID readers, to be determined.

[0034] According to an advantageous development of the invention, extreme values ​​of the determined magnitude values ​​of the at least one signal property are determined, wherein an extreme value corresponds to a specific relative position and / or a specific relative distance, preferably a position with the smallest distance from one another. The magnitude values ​​of the amplitude of the received signal can, for example, be maximum when the distance between an RFID transponder and an RFID reader is at its smallest. It is advantageous that extreme values ​​can be easily determined and the relative positions and / or relative distances can be determined with high accuracy.

[0035] According to an advantageous development of the invention, the at least one RFID transponder is identified. This makes it possible to detect whether a malfunction, such as a missing or defective RFID transponder, is present. Furthermore, it is possible to identify which rotating vehicle element, for example, the front or rear wheel, is involved. It is conceivable that the at least one RFID transponder is uniquely identified by a transponder ID assigned to it. A specific transponder ID can also be used to assign, for example, several vehicle elements equipped with transponders, such as the front or rear wheel or chainring, using an RFID reader, or to precisely determine speed through the unique recognition of an RFID transponder.

[0036] According to an advantageous development of the invention, at least three RFID transponders are arranged on the at least one moving vehicle element, and the direction of rotation of the at least one moving vehicle element is determined based on the identification of the individual RFID transponders. This makes it possible to determine whether the vehicle is traveling forward or backward at the determined speed.

[0037] According to an advantageous development of the invention, the at least one RFID transponder is designed as an active, semi-active, or passive RFID transponder. An active RFID transponder is fully powered by a battery. In a semi-active RFID transponder, the battery only supplies power to the microchip located on the RFID transponder. Battery-operated RFID transponders can transmit signals over comparatively long distances. The high-frequency energy absorbed by a passive RFID transponder via an integrated antenna can serve as a power supply during the communication process. By avoiding a battery, passive RFID transponders have a simple and lightweight construction and are low-maintenance. The RFID transponder is preferably at least partially powered by energy harvesting methods.The term "energy harvesting method" is to be understood in the broadest sense and refers, in particular in the description, preferably in the claims, to methods for generating electrical energy from ambient energy sources. Photoelectric effects, for example, using a solar cell, thermoelectric effects, or piezoelectric effects, for example, using a piezoelectric element, can be used to convert ambient energy into electrical energy.

[0038] According to an advantageous development of the invention, a frequency in the low-frequency range, the high-frequency range, or the ultra-high-frequency range is selected for the frequency of the transmitted signal and / or the received signal. In the low-frequency range, the frequency is preferably selected between 30 kHz and 300 kHz, more preferably between 125 kHz and 148 kHz. In the high-frequency range, the frequency is preferably selected between 3 MHz and 30 MHz, more preferably between 8 MHz and 20 MHz, more preferably between 12 MHz and 15 MHz, most preferably 13.56 MHz. In the ultra-high-frequency range, the frequency is preferably selected between 300 MHz and 3000 MHz, more preferably between 865 MHz and 925 MHz. One of the advantages achieved by a frequency in the low-frequency range is that a particularly cost-effective method can be provided.One of the advantages of using an ultra-high frequency range is that signals can be transmitted over particularly long distances.

[0039] According to an advantageous development of the invention, the at least one RFID reader is arranged on at least one additional vehicle element that is essentially stationary relative to the at least one moving vehicle element. One of the advantages achieved thereby is the ease of implementation of the method. It is conceivable that a drive unit, a down tube of a bicycle frame, a bicycle fork, or a bicycle handlebar of an e-bike is selected as the at least one additional vehicle element.

[0040] Further important features and advantages of the invention emerge from the subclaims, from the drawings and from the associated description of the figures.

[0041] It is understood that the features mentioned above and those to be explained below can be used not only in the combination specified in each case, but also in other combinations or on their own, without departing from the scope of the present invention.

[0042] Preferred embodiments and embodiments of the present invention are illustrated in the drawings and are explained in more detail in the following description.

[0043] It shows in schematic form Fig. 1 Steps of a method according to an embodiment of the present invention; Fig. 2 shows a vehicle according to an embodiment of the present invention; Fig. 3 a vehicle according to another embodiment of the present invention, and Fig. 4 a vehicle according to another embodiment of the present invention.

[0044] Fig. 1 shows in schematic form steps of a method according to an embodiment of the present invention.

[0045] In a step S1, a transmission signal is transmitted by the at least one RFID reader and received by the at least one RFID transponder in a step S2.

[0046] Subsequently, the at least one RFID transponder transmits a received signal in step S3. For this purpose, the previously received transmitted signal is backscattered. The received signal is received by the at least one RFID reader in step S4.

[0047] In a further step S5, signal values ​​of the received signal are sampled at a specific sampling rate. The sampling rate must be selected sufficiently high to enable the magnitude values ​​of at least one signal property of the received signal to be determined with sufficiently high accuracy in the subsequent step S6. The magnitude values ​​are determined based on the sampled signal values. In this exemplary embodiment, the amplitude of the received signal is selected as the signal property, and its magnitude values ​​are determined.

[0048] In a further step S7, relative positions and / or relative distances of the at least one RFID transponder and the at least one RFID reader are determined based on the determined magnitude values ​​of the amplitude. For this purpose, extreme values ​​of the determined magnitude values ​​of the amplitude are determined in a step S71. A maximum value of the amplitude can correspond to a relative position and / or a relative distance at which the distance of the at least one RFID transponder to the at least one RFID reader is at its smallest. A minimum value of the amplitude can correspondingly correspond to a relative position and / or a relative distance at which the distance is at its greatest.

[0049] In principle, it is also conceivable that the relative positions and / or relative distances of the at least one RFID transponder and the at least one RFID reader are determined based on the determined magnitude values ​​of the frequency, the phase shift, or a sufficiently high signal value. Furthermore, the relative positions and / or relative distances can be determined based on several signal properties.

[0050] In a further step S8, times corresponding to the relative positions and / or relative distances are determined.

[0051] In a further step S9, a movement speed value of the at least one moving vehicle element is determined based on the times corresponding to the relative positions and / or relative distances and the relative positions and / or relative distances. The movement speed value can be an angular velocity value.

[0052] In a further step S10, the vehicle's travel speed value is then determined based on the movement speed value of the at least one moving vehicle element. The geometry of the moving vehicle element is taken into account.

[0053] Fig. 2 shows in schematic form a vehicle according to an embodiment of the present invention.

[0054] The vehicle 1a, here in the form of an eBike, has a drive unit 2 comprising two RFID readers 3. An RFID transponder 6 is arranged on each of the front wheel 4 and the rear wheel 5 of the eBike in the area of ​​the rim 7. Each RFID transponder 6 can be assigned an RFID reader 3 for signal transmission. Such an arrangement allows for a particularly simple design.

[0055] Furthermore, the vehicle 1a comprises a sampling unit 8, designed to sample signal values ​​of the received signal at a specific sampling rate.

[0056] In addition, the vehicle 1a comprises a determination unit 9, designed to determine magnitude values ​​of at least one signal property of the received signal based on the sampled signal values, to determine relative positions and / or relative distances of the at least one RFID transponder 6 and the at least one RFID reader 3 to one another based on the sampled magnitude values ​​of the at least one signal property, to determine times corresponding to the relative positions and / or relative distances, to determine a movement speed value of the at least one moving vehicle element 4, 5 based on the times corresponding to the relative positions and / or relative distances and the relative positions and / or relative distances, and to determine the driving speed value of the vehicle 1a based on the movement speed value of the at least one moving vehicle element 4, 5.

[0057] The scanning unit 8 and the determination unit 9 can each comprise an antenna and evaluation electronics, or each comprise an antenna and a shared evaluation electronics, and can be arranged in the drive unit 2. These can alternatively be arranged at any desired location. It is also conceivable for the antenna and evaluation electronics of the scanning unit 8 and / or the determination unit 9 to be arranged separately at different locations.

[0058] Fig. 3 shows in schematic form a vehicle according to another embodiment of the present invention.

[0059] The vehicle 1b according to Fig. 3 comprises a drive unit 2, a scanning unit 8 and a determination unit 9 according to the vehicle 1a according to Fig. 2 on.

[0060] Furthermore, the vehicle 1b has two RFID readers 3, which are arranged inside the down tube 10 of the eBike frame. An RFID transponder 6 is arranged on each of the front wheel 4 and the rear wheel 5 of the eBike in the area of ​​the rim 7. Each RFID transponder 6 can be assigned an RFID reader 3 for signal transmission. The advantage of this design is the minimal shielding.

[0061] Fig. 4 shows in schematic form a vehicle according to another embodiment of the present invention.

[0062] The vehicle 1c according to Fig. 4 comprises a drive unit 2, a scanning unit 8 and a determination unit 9 according to the vehicle 1a according to Fig. 2 on.

[0063] Furthermore, the vehicle 1c has two RFID readers 3, one RFID reader 3 being arranged on the bicycle fork 11 and one RFID reader 3 being arranged in the area of ​​the handlebars 12. Two RFID transponders 6 are arranged on the front wheel 4 of the eBike in the area of ​​the rim 7 and on opposite sides. In this exemplary embodiment, each RFID transponder 6 is assigned an RFID reader 3 for signal transmission. One of the advantages achieved thereby is the short distance between the RFID transponders 6 and the RFID readers 3. In addition, the shielding is minimal and such an arrangement is easy to implement. It is fundamentally conceivable for one or more RFID readers to be assigned to one or more RFID transponders.

[0064] The vehicle 1a, 1b, 1c according to the Fig. 2 to 4 is in particular designed to determine the driving speed value of the vehicle 1a, 1b, 1c by means of a method according to the steps according to Fig.1 to be determined.

[0065] In summary, the present invention has at least one of the following advantages and / or provides the following features: - Robust determination of the speed of a vehicle, - High robustness of the process against electromagnetic and magnetic interference fields, - Low weight and small dimensions of the RFID transponders and RFID readers - Easy retrofitting of RFID transponders and RFID readers - Easy installation of the speed measurement system for original equipment thanks to the wireless measuring principle - Providing an alternative method for determining driving speed. - Significant improvement in the precise determination of speed through unique transponder identification numbers that can be read and assigned by the reader.

[0066] Although the present invention has been described using preferred embodiments, it is not limited thereto but can be modified in many ways.

Claims

[1] Method for determining (S10) a speed value of a vehicle (1a, 1b, 1c), in particular a single-track vehicle, such as an e-bike, wherein at least one RFID transponder (6) is arranged on at least one moving vehicle element (4, 5) of the vehicle (1a, 1b, 1c) and at least one RFID reader (3) is arranged on at least one further vehicle element (2, 10, 11, 12) of the vehicle (1a, 1b, 1c) for determining the speed value. [2] Method, in particular according to claim 1, for determining a speed value of at least one moving vehicle element (4, 5), in particular a single-track vehicle, such as an e-bike, wherein at least one RFID transponder (6) is arranged on at least the moving vehicle element (4, 5) of the vehicle (1a, 1b, 1c) and at least one RFID reader (3) is arranged on at least one further vehicle element (2, 10, 11, 12) of the vehicle (1a, 1b, 1c) for determining the speed value. [3] Method according to claim 2, characterized by that the determination (S10) of the speed value of the vehicle (1a, 1b, 1c) takes place taking into account the speed value of the at least one moving vehicle element (4, 5). [4] Method according to one of the preceding claims, characterized by that the at least one moving vehicle element (4, 5) and the at least one further vehicle element (2, 10, 11, 12) move relative to one another. [5] Method according to one of the preceding claims, wherein the determination (S10) of the speed value of the vehicle takes place taking into account at least one signal transmitted and / or received by the RFID transponder and / or the RFID reader, wherein the received signal has at least one signal property. [6] Method according to one of the preceding claims, characterized bythat the at least one signal property is a signal strength, in particular a change in the signal strength of the received signal and / or a frequency of the received signal. [7] Method according to one of the preceding claims, characterized by that the at least one signal property is a phase difference, in particular a change in the phase difference of the received signal. [8] Method according to one of the preceding claims, characterized by the following further steps: - transmitting (S1) a transmission signal by the at least one RFID reader (3), - receiving (S2) the transmission signal by the at least one RFID transponder (6), • Transmitting (S3) the received signal by the at least one RFID transponder (6), • Receiving (S4) the received signal by the at least one RFID reader (3). [9] Method according to one of the preceding claims, characterized by the following further steps: - sampling (S5) of signal values ​​of the received signal, wherein the sampling is carried out by means of a sampling rate, in particular a specific sampling rate, - Determining (S6) magnitude values ​​of at least one signal property of the received signal based on the sampled signal values. [10] Method according to one of the preceding claims, further comprising the step: - Determining (S7) relative positions and / or relative distances of the at least one RFID transponder (6) and the at least one RFID reader (3) to one another, in particular based on the determined size values ​​of the at least one signal property. [11] Method according to one of the preceding claims, further comprising the step: Determining (S8) points in time corresponding to the relative positions and / or relative distances of the at least one RFID transponder (6) and the at least one RFID reader (3) to one another. [12] Method according to one of the preceding claims, characterized by that the determination (S9) of the movement speed value of the at least one moving vehicle element (4, 5) takes place taking into account the times corresponding to the relative positions and / or relative distances and the relative positions and / or relative distances. [13] Method according to one of the preceding claims, characterized by that at least two RFID readers (3) are arranged and the relative positions and / or relative distances are determined by triangulation. [14] Method according to one of the preceding claims, characterized by that extreme values ​​of the determined magnitude values ​​of at least one signal property are determined (S71). [15] Method according to one of the preceding claims, characterized by that the at least one RFID transponder (6) is identified. [16] Method according to one of the preceding claims, characterized bythat at least three RFID transponders (6) are arranged on the at least one moving vehicle element (4, 5) and a direction of rotation of the at least one moving vehicle element (4, 5) is determined based on an identification of the individual RFID transponders (6). [17] Method according to one of the preceding claims, characterized by that the at least one RFID transponder (6) is designed as an active, semi-active or passive RFID transponder (6). [18] Method according to one of the preceding claims, characterized by that a frequency in the low frequency range, the high frequency range or the ultra-high frequency range is selected for the frequency of the transmitted signal and / or the received signal. [19] Method according to one of the preceding claims, characterized bythat the at least one RFID reader is arranged on at least one further vehicle element which is essentially stationary relative to the at least one moving vehicle element (4, 5). [20] Measuring arrangement suitable for carrying out a method according to one of the preceding claims, comprising: - at least one RFID transponder (6), - at least one RFID reader (3) - at least one scanning unit (8), - at least one determination unit (9). [21] Drive unit, in particular for a single-track vehicle, such as an eBike, comprising a measuring arrangement according to claim 20. [22] Vehicle, in particular a single-track vehicle, such as an eBike, comprising a drive unit according to claim 21.

Images