Lighting device for a vehicle

Abstract

The invention alternatively relates to a lighting device for a vehicle, in particular for a bicycle, the lighting device having at least one lighting unit for lighting a road section and a V2X unit, the V2X unit having a V2X communication interface for transmitting and receiving V2X messages.

Description

[0001] Description

[0002] title

[0003] Lighting device for a vehicle

[0004] State of the art

[0005] WO 2022 / 221233 describes a security device with a V2X modem.

[0006] Disclosure of the invention

[0007] The invention particularly relates to a V2X module for a two-track vehicle, in particular for a bicycle, comprising a housing with a vehicle interface for mechanically connecting the V2X module to the vehicle, with a V2X communication interface for sending and receiving V2X messages, with a movement detection unit for determining a movement characteristic of the vehicle, and with a state determination unit designed to determine a state of the V2X module based on the movement characteristic. It is proposed that the state determination unit be designed to additionally determine the state based on wheel sensor information. This can advantageously improve the accuracy of the state determination.

[0008] The abbreviation V2X (Vehicle to Everything) refers specifically to a communication technology designed for communication between different vehicles, infrastructure elements such as traffic lights, pedestrians, and networks. In the context of this application, a module is understood specifically to be a hardware component with a separate housing that can also be subsequently mounted or installed on or in the vehicle. Mounting is understood to mean a purely mechanical connection. Installation is understood to mean both a mechanical and electrical connection.

[0009] The vehicle can be a motor-driven vehicle such as a motorcycle, an electric bicycle, or an e-scooter, or a motorless vehicle, for example a motorless bicycle. The bicycles are preferably designed as electric bicycles. In the context of this application, an electric bicycle is understood to mean, in particular, a bicycle that has a drive unit for assisting the rider. The electric bicycle is preferably designed as an e-bike, a pedelec, an S-pedelec, a cargo bike, a folding bicycle, or the like. The drive unit has a motor, which can be designed, for example, as a mid-engine or a hub motor. The motor is preferably designed as an electric motor. The drive unit is connected to the energy supply unit for supplying the drive unit with energy.The energy supply unit is preferably designed as a battery pack and has a battery housing, which is preferably detachably connected to a frame of the bicycle. The electric bicycle preferably has a control unit, wherein the control unit of the electric bicycle is assigned to an electronic system. The electronic system preferably comprises a sensor unit, wherein the sensor unit can comprise, for example, motion sensors, torque sensors, speed sensors, GNSS receivers, magnetic sensors or the like. In addition, the electronics in particular comprise at least one communication interface for wirelessly connecting the electric bicycle to a mobile device and / or a server. The communication interface can be designed, for example, as a short-range communication interface, in particular as a Bluetooth interface or as a WiFi interface, for connecting to the mobile device.The mobile device can be configured, for example, as a smartwatch, a smartphone, or the like. Alternatively or additionally, the communication interface can be configured as a long-range communication interface, for example, a 2G, 3G, 4G, or 5G interface for wirelessly connecting the electric bicycle to the server.

[0010] The vehicle interface preferably has at least one connecting element for a force-locking and / or positive connection. The vehicle interface can be designed to be removable without tools, removable with tools, or non-destructively removable. Preferably, the vehicle has a module interface corresponding to the vehicle interface, which can also be designed to be removable without tools, removable with tools, or non-destructively removable.

[0011] In the context of this application, a V2X message is understood to mean, in particular, information regarding a vehicle's status, which is intended to determine a potential hazard or obstacle for the vehicle or for other vehicles in the vicinity. The V2X message can, for example, contain information about a movement status, in particular whether the vehicle is moving or not, about a vehicle type, e.g., car, truck, or bicycle, about a speed or direction of the vehicle, about a current position, and / or about a likely future position of the vehicle. The V2X message preferably corresponds to a standardized message format, e.g., CAM / VAM or PSM / BSM, and enables the recipient to carry out their own risk assessment, e.g., the risk of a possible collision.

[0012] The movement characteristic is one or more quantities which represent in particular a type or form of movement or on the basis of which an absolute position, a relative position, a speed, an acceleration and / or a direction can be determined.

[0013] Furthermore, it is proposed that the V2X module have a power supply unit. This advantageously ensures the functionality of the V2X module even without an external power supply. The power supply unit can be formed from one or more battery cells. The power supply unit can be permanently integrated into the V2X module or detachably designed in the form of a removable battery pack. Alternatively or additionally, it is also conceivable for the V2X module to have an electrical interface via which the V2X module can be supplied with power and / or the power supply unit can be charged. For example, it is conceivable for the electrical interface to be designed for connection to the vehicle so that the V2X module can be charged via an energy storage device in the vehicle.Alternatively or additionally, the electrical interface can also be designed for electrical connection to a power grid or another energy source, such as a power bank. The electrical interface can be designed, for example, as a USB interface. Furthermore, it is proposed that the V2X communication interface have at least one antenna element. This can advantageously ensure sufficiently good communication capability. Alternatively, it is also conceivable for the vehicle to have the antenna element and be controlled via the V2X module.

[0014] It is also proposed that the motion detection unit comprise a GNSS receiver and / or a motion sensor. This advantageously ensures particularly precise determination of the motion parameter. The motion sensor can be embodied as an acceleration sensor, a gyroscope, a magnetometer, an infrared sensor, or an ultrasonic sensor. The V2X module can comprise one or more motion sensors.

[0015] It is further proposed that the state determination unit be configured to determine a vehicle type and / or proper installation of the V2X module on the vehicle. This can advantageously prevent disruption to other road users due to improper use of the V2X module. The vehicle type can be determined, for example, based on a speed and / or information regarding the road on which the vehicle with the V2X module is traveling. Proper installation can also be determined, for example, based on the provided movement parameters and wheel sensor information.

[0016] It is also proposed that the state determination unit be configured to determine an absolute position of the vehicle and / or a movement state. This can advantageously improve the quality of the V2X messages. The absolute position is, in particular, a precise geographical position of the V2X module or the connected vehicle. The absolute position preferably comprises geographical coordinates. The movement state can, for example, comprise a speed and / or a direction. It is also conceivable that the movement state is determined as being in motion, stationary, or involved in an accident, so that the information is provided to road users in the vicinity of the vehicle via the V2X message.

[0017] It is further proposed that the V2X module have a communication interface to a mobile device. This can advantageously increase the number of functions. The communication interface to the mobile device is preferably designed as a wireless communication interface, for example as a Bluetooth interface. The mobile device is preferably designed to receive V2X messages or other information from the V2X module, so that warning information or further information about road users in the surrounding area can be displayed via the mobile device. The mobile device can be designed, for example, as a smartphone or a smartwatch. It is also conceivable that the V2X module can be set or configured via the mobile device. For example, it is conceivable that the mobile device can be used to configure the vehicle and / or mounting position on which the V2X module is provided.

[0018] It is further proposed that the V2X module have a wireless or wired vehicle interface for connection to the vehicle, wherein the vehicle has a wheel sensor for detecting the wheel sensor information, wherein the wheel sensor information can be provided to the V2X module via the vehicle interface. The wheel sensor can be designed, for example, as a reed sensor or as a Hall sensor, which is arranged such that it detects the position and / or movement of a signal generator connected to a wheel of the vehicle, in particular a magnetic element. Alternatively, non-magnetic wheel sensors are also conceivable.

[0019] It is also proposed that the V2X module include a wheel sensor for detecting wheel sensor information. This advantageously increases security and largely eliminates tampering. The wheel sensor can be designed as a magnetic wheel sensor, for example a reed sensor or a Hall sensor, or as a non-magnetic wheel sensor. Other wheel sensors suitable for detecting wheel movement are also conceivable, such as a camera. The wheel sensor can be arranged in the housing of the V2X module. However, it is also conceivable for the wheel sensor to be arranged outside the housing of the V2X module and connected to the wheel sensor via a cable or wirelessly.

[0020] Furthermore, the invention relates in particular to a bicycle with a V2X module as described above, wherein the vehicle interface is designed to fasten the V2X module to a suspension fork of the bicycle. Advantageously, the position can ensure a particularly good connection via cable to the vehicle and / or a particularly simple determination of the wheel sensor information.

[0021] The invention relates to a lighting device for a vehicle, in particular for a bicycle, wherein the lighting device comprises at least one lighting unit for illuminating a road section and a V2X unit. The V2X unit comprises a V2X communication interface for sending and receiving V2X messages. This advantageously enables optimal integration of the V2X unit into the vehicle system.

[0022] The lighting device can be designed, for example, as a headlight, a rear light, etc. The lighting unit has at least one lighting element, wherein the lighting element can be designed as an incandescent lamp, a halogen lamp, an LED lamp, or the like. The lighting unit preferably has a control unit for controlling the at least one lighting element. The control unit can be connected, for example, to a sensor element in the form of a brightness sensor or a motion sensor. The sensor element can be assigned to the lighting device or the vehicle to which the lighting device is attached. For example, it is conceivable for the control unit to control the brightness of the lighting element based on the brightness.

[0023] It is further proposed that the lighting device have a housing with a vehicle interface for mechanically connecting the lighting device to the vehicle. The vehicle interface of the lighting unit preferably has at least one connecting element for a force-locking and / or positive connection. The vehicle interface can be designed to be removable without tools, removable with tools, or non-destructively removable. Preferably, the vehicle has a module interface corresponding to the vehicle interface, which can also be designed to be removable without tools, removable with tools, or non-destructively removable.

[0024] It is also proposed that the V2X unit has a state determination unit which is designed to determine a state of the V2X unit based on a movement characteristic and / or wheel sensor information as described above.

[0025] Furthermore, it is proposed that the lighting device have an electrical interface, wherein the lighting device is configured to supply energy and / or provide information, in particular to provide the movement characteristic, via the electrical interface. The electrical interface can be at least partially wireless or completely wired.

[0026] It is further proposed that the lighting device include a wheel sensor for detecting the wheel sensor information. This advantageously ensures robust determination of the state. The wheel sensor can be designed, for example, as a magnetic wheel sensor as described above.

[0027] It is also proposed that the V2X communication interface of the lighting device has at least one antenna element.

[0028] Furthermore, it is proposed that the state determination unit is designed to determine a vehicle type and / or a proper attachment of the V2X module to the vehicle as described above.

[0029] It is further proposed that the lighting unit be controllable based on information and / or a V2X message from the V2X unit. This can advantageously provide optimized lighting and / or warnings for the driver and / or other road users. The lighting unit is preferably designed to be switched on and / or off based on the V2X message or another control signal from the V2X unit. Drawings

[0030] Further advantages will become apparent from the following description of the drawings. The drawings, the description, and the claims contain numerous features in combination. Those skilled in the art will also expediently consider the features individually and combine them into further meaningful combinations. Features of alternative embodiments are provided with the same reference numeral and an additional letter identifying the embodiment.

[0031] They show:

[0032] Fig. 1 is a schematic view of a system including an electric bicycle with a V2X module;

[0033] Fig. 2 is a perspective view of the V2X module mounted on the electric bicycle;

[0034] Fig. 3 is a flowchart showing a control method for the V2X module;

[0035] Fig. 4 an electric bicycle with a lighting device having a V2X unit.

[0036] Description of the embodiments

[0037] In Fig. 1, a system 10 comprising a first vehicle 12, a mobile terminal 100 and a two-track vehicle 14 in the form of an electric bicycle 16 is shown in a schematic view.

[0038] The first vehicle 12 is embodied, for example, as a car. Alternatively, another type of vehicle, such as a truck, or even a configuration of the first vehicle 12 as a two-track vehicle 14 would be conceivable. The first vehicle 12 has a V2X unit 502a configured to send and receive V2X messages.

[0039] The electric bicycle 16 has a housing in the form of a frame 20 or a bicycle frame. Two wheels 22 are connected to the frame 20. The electric bicycle 16 also has a power supply unit 24 in the form of a battery pack. The electric bicycle 16 further has a drive unit 26 comprising an electric motor or auxiliary motor. The electric motor is preferably designed as a permanent magnet-excited, brushless DC motor. The electric motor is designed, for example, as a mid-mounted motor, although a hub motor or the like is also conceivable. The electric bicycle 16, in particular the drive unit 26 of the electric bicycle 16, is supplied with power via the power supply unit 24. The power supply unit 24 can be fastened to the frame 20 from the outside, as shown, or can be integrated into the frame 20.

[0040] The electric bicycle 16 includes an electronic system comprising a control unit (not shown) designed to control or regulate the electric bicycle 16, in particular the electric motor. The electric bicycle 16 has a pedal crank 28. The pedal crank 28 has a pedal crankshaft (not shown).

[0041] The electronics and the drive unit 26 with the electric motor and the pedal crankshaft are at least partially arranged in a drive housing 27 connected to the frame 20. The drive movement of the electric motor is preferably transmitted to the pedal crankshaft via a gear (not shown), wherein the amount of assistance provided by the drive unit 26 is controlled or regulated by means of the electronics. The control unit is designed to control the drive unit such that the rider of the electric bicycle 16 is assisted when pedaling. Preferably, the control unit is designed to be operable by the rider so that the rider can adjust the level of assistance. The electric bicycle 16 has, for example, a light assistance mode and a strong assistance mode, wherein the drive unit offers greater assistance to the rider in the strong assistance mode.

[0042] The electric bicycle 16 also includes a user interface 50, which is arranged on a handlebar 32 of the electric bicycle 16. Alternatively, positioning the user interface 50 within the frame 20, preferably in a top tube of the frame 20, is also conceivable. The user interface 50 comprises, for example, a housing 52 in which a computing unit (not shown), a storage unit (not shown), and a wireless communication interface (not shown) are arranged. The user interface 50 is connected, for example, via at least one cable (not shown) to the electrical bicycle components, in particular the battery pack 24 and the drive unit 26. The cables preferably run concealed within the frame 20. Alternatively or additionally, a wireless connection via the communication interface of the user interface 50 is also conceivable.The wireless communication interface of the user interface 50 is embodied, for example, as a BLE (Bluetooth Low Energy) interface. The electric bicycle 16 is designed to be directly connected to the mobile terminal 100 via the wireless communication interface of the user interface 50 for exchanging data. The user interface 50 can be permanently integrated in or on the electric bicycle 16 or detachably connected to the electric bicycle 16. The electronic components of the user interface 50 are also assigned, for example, to the electronics of the electric bicycle 16.

[0043] The electronics of the electric bicycle 16 comprise a sensor unit. The sensor unit comprises a plurality of sensor elements, which are arranged, for example, in different components and / or different areas of the electric bicycle 16. By way of example, the sensor unit comprises at least one sensor element in the form of an inertial sensor. The inertial sensor is designed to detect a movement, an acceleration and / or an orientation of the two-track vehicle 14. The inertial sensor can be designed, for example, as an acceleration sensor and / or as a gyro sensor. In addition, the sensor unit comprises, for example, a position sensor element for detecting position information, in particular for detecting geographical coordinates. In addition, the sensor unit comprises, for example, a torque sensor and a yaw rate sensor. The previously described sensor elements are arranged, for example, in the drive housing 27 of the drive unit 26.In addition, the sensor unit comprises, for example, a brightness sensor for detecting the brightness of the environment, wherein the brightness sensor is arranged in the user interface 50.

[0044] By way of example, the sensor unit further comprises one or more magnetic elements, for example in the form of rim magnets, on one of the wheels 22 of the electric bicycle, which is designed as a signal generator 34 for a suitable wheel sensor, for example in the form of a Hall sensor, for detecting wheel sensor information. Based on the wheel sensor information, the speed of the electric bicycle 16 can be determined by the control unit of the electric bicycle 16. If multiple rim magnets are installed, a higher speed resolution is advantageously possible. Optionally, the magnetic elements are mounted alternately in one direction or the other, resulting in alternating patterns (north pole-south pole versus south pole-north pole) for additional plausibility checks and / or security.

[0045] The user interface 50 comprises an operating unit 30 for operating the electric bicycle 16. The operating unit 30 has, for example, an on / off switch (not shown in detail), wherein the electric bicycle 16, in particular the drive unit 26, can be activated by actuating the switch. In addition, the electronics are designed to be controllable by means of the operating unit 30. For example, the assistance mode of the electric bicycle 16 can be selected by operating the operating unit 30. By way of example, the user interface 50 further comprises a display unit (not shown) for displaying operating data or other information provided by the control unit of the electric bicycle 16 or the mobile terminal 100.

[0046] The mobile device 100 is embodied, for example, as a smartphone 102. The mobile device 100 comprises a display unit 104 designed to display information. The display unit 104 is embodied, for example, as a touch-sensitive screen. The mobile device 100 has, for example, an operating system designed to execute application software (app). The mobile device 100 has at least one bicycle app designed to display operating data of the electric bicycle 16 and / or to control the electric bicycle 16. The vehicle 14 can have a receptacle for the mobile device 100. Alternatively or additionally, it is conceivable for the mobile device 100 to have a V2X app that only displays data from the V2X module and / or is designed to configure and / or operate the V2X module.

[0047] The mobile device 100 has at least one short-range communication interface that corresponds to the short-range communication interface of the electric bicycle 16. The short-range communication interface is embodied, for example, as a Bluetooth interface. The mobile device 100 can establish a connection with the electric bicycle 16 depending on or independently of the bicycle app and / or the V2X app. This connection is established, for example, via a Bluetooth pairing process. The pairing process pairs and connects the mobile device 100 and the electric bicycle 16. If the mobile device 100 is physically separated from the electric bicycle 16, the wireless communication is also disconnected; however, they remain in the paired state.

[0048] In addition, the mobile terminal 100 comprises at least one long-range communication interface for wireless communication with a server. The long-range communication interface is embodied, for example, as an LTE interface. The vehicle 14 also has a V2X module 300, wherein the V2X module

[0049] 300 is shown in Figure 2 in a perspective view in the state mounted on the bicycle fork 21.

[0050] The V2X module is embodied, for example, as a retrofit module that can be subsequently attached to and connected to the vehicle 14. The V2X module 300 has a vehicle interface 301, wherein the V2X module 300 is embodied, for example, as being detachably connectable to a bicycle fork 21 via the vehicle interface 301. A module interface 302, which corresponds to the vehicle interface 301, is arranged on the bicycle fork 21. The module interface 302 comprises, for example, two retaining clamps 303, wherein both the module interface 302 and the V2X module 300 can be attached to the bicycle fork 21 via the retaining clamps 303.

[0051] The V2X module 300 has a housing 304, which is formed, for example, from a plastic.

[0052] The V2X module 300 includes, for example, a power supply 306, which is embodied, for example, by a cylindrical Li-ion cell. The power supply 306 can be permanently integrated into the V2X module 300 or detachably configured.

[0053] In addition, the V2X module 300 has electronics 308. The electronics 308 includes, for example, a circuit board (not shown), which includes, for example, a computing unit in the form of a CPU, a memory unit for storing data, a sensor unit, and a communication interface.

[0054] The communication interface of the V2X module 300 comprises a V2X communication interface for sending and receiving V2X messages. In addition, the communication interface of the V2X module 300 comprises, for example, at least one short-range communication interface in the form of a Bluetooth and / or a BLE communication interface and / or a WiFi communication interface. Alternatively or additionally, it is also conceivable for the communication interface of the V2X module 300 to have at least one long-range communication interface in the form of an LTE or 5G communication interface. The communication interface of the V2X module preferably comprises at least one antenna element, wherein the antenna element is preferably positioned forward in the direction of travel, thus enabling good reception. Alternatively or additionally, it is also conceivable for the antenna element to be positioned rearward in the direction of travel.

[0055] By way of example, the V2X module further comprises an electrical interface 310 for the electrical connection to the vehicle 14. The electrical interface 310 comprises a cable connection 312. The electrical interface 310 is designed, by way of example, for the electrical connection of the V2X module 300 to the power supply unit 24 of the vehicle 14. Furthermore, the electrical interface 310 is provided for the exchange of information between the vehicle 14 and the V2X module 300. This can be done, for example, via a CAN-FD connection. Alternatively, it is also conceivable for the exchange of information between the V2X module 300 and the vehicle 14 to take place wirelessly, for example via WiFi, Bluetooth, or BLE.

[0056] The sensor unit of the V2X module 300 comprises, for example, an inertial sensor system, which preferably includes an acceleration sensor and a gyro sensor. The sensor unit also includes a position sensor in the form of a GNSS receiver, which is designed to detect geographical coordinates.

[0057] Furthermore, the V2X module has a movement determination unit 312 for determining a movement characteristic of the vehicle and a state determination unit 314 for determining a state of the V2X module based on the movement characteristic determined by the movement determination unit 312.

[0058] The movement characteristic is designed, for example, such that, based on the movement characteristic, an absolute position in the form of a geographical coordinate with an associated speed and / or direction of the vehicle 14 can be determined by the state determination unit 314. The movement determination unit 312 is designed, for example, such that the movement characteristic is determined exclusively based on the information from the sensor unit of the V2X module 300. Alternatively or additionally, it would also be conceivable for the movement determination unit 312 to provide information from the sensor unit of the vehicle 14 or from the mobile terminal 100 and to determine the movement characteristic based thereon.It is also conceivable that, based on the movement characteristic, sudden steering interventions, for example evasive maneuvers, decelerations such as heavy braking maneuvers and / or the type and condition of the ground are determined by the condition determination unit 314.

[0059] The V2X module 300 is configured to send V2X messages to road users in the surrounding area, such as the vehicle 12, based on the information determined by the movement detection unit 312 and the state determination unit 314. The V2X messages can include the movement size or other movement data of the vehicle 14 connected to the V2X module 300 and / or further information about the vehicle 14, its state, route information of the vehicle 14, or a predicted trajectory of the vehicle 14. Based on the V2X messages, the other vehicles 12 in the surrounding area can, if necessary, implement measures or issue warnings to the respective drivers. It is therefore very advantageous if the V2X message is designed to be reliable and as tamper-proof as possible.

[0060] For this purpose, the V2X module 300, in particular the sensor unit of the V2X module 300, has a wheel sensor 316 designed to determine wheel sensor information. The wheel sensor 316 is designed, for example, as a magnetic sensor, in particular as a Hall sensor. The wheel sensor 316 is arranged in the housing 304 of the V2X module 300 such that, at at least one point during the rotation of the wheel 22 of the electric bicycle 16, the signal generator 34 in the form of the rim magnet runs so close to the wheel sensor 316 that a magnetic signal can be detected. Based on the temporal profile of the magnetic signal and / or the distance between two magnetic signals, a speed and / or an acceleration can be determined by the motion detection unit.

[0061] Advantageously, the wheel sensor information of the wheel sensor 316 can thus be used with the further signals of the inertial sensor system and / or the GNSS receiver for plausibility check and / or verification and / or for sensor fusion.

[0062] The state determination unit 314 is preferably additionally designed to determine a vehicle type and / or a proper attachment of the V2X module to the vehicle.

[0063] For example, the state determination unit 314 can draw a conclusion about the size of the wheel 22 of the vehicle 14 based on a comparison of the sensor data of the wheel sensor 316 with the sensor data of the inertial sensor system or the GNSS receiver. This can be used to determine, for example, whether the vehicle 14 connected to the V2X module is a bicycle with larger wheels or, for example, an e-scooter with smaller wheels. Furthermore, by detecting the wheel sensor information, it can be ensured that the V2X module 300 is properly attached to a moving vehicle. A fall can also be determined based on a sensor function, since in this case an integrated acceleration signal deviates from the wheel sensor information, in particular due to a loss of traction or a rollover.

[0064] Alternatively, it would also be conceivable that no wheel sensor is integrated into the V2X module 300, but rather that the wheel sensor information is provided by the vehicle 14 via the electrical interface 310. In this case, the cable connection can also ensure that the V2X module 300 is mechanically connected to the vehicle 14.

[0065] It is also conceivable that information from the movement detection unit 312 and / or the state determination unit 314 is provided to the electric bicycle 16 via the electrical interface 310 or the wireless communication interface. Advantageously, this allows additional data to be obtained, or safety-relevant information such as collision warnings can be provided to the electric bicycle 16, so that the user can be warned, for example, via the user interface 50. The warning can be provided, for example, visually and / or acoustically and / or haptically.

[0066] The V2X module is preferably configured such that the transmission of V2X messages is deactivated and / or enabled based on information determined by the state determination unit 314. For example, it is conceivable that a plausibility check of the inertial sensor signal is performed based on the wheel sensor signal, preferably via a Kalman filter, wherein the transmission of V2X messages is deactivated if the V2X module 300 is not attached to a moving vehicle with wheels rotating at a plausible speed, in particular, and / or if the correct type information is not stored in the V2X message. In contrast to simply capturing the wheel sensor information, the plausibility check can ensure greater protection against manipulation.

[0067] An exemplary process is shown in a flow chart in Figure 3.

[0068] In a first method step 400, the V2X module 300 is switched on. This can be done, for example, via a control element on the housing 304 of the V2X module 300. Alternatively, it would also be conceivable for the V2X module to be switched on automatically based on sensor data, for example, based on movement data from the inertial sensor system. It is also conceivable for the V2X module 300 to be switched on by switching on the vehicle 14.

[0069] In a second method step 402, a check is made to determine whether wheel sensor information is detected by wheel sensor 316. If no wheel sensor information is detected, in a method step 404, the V2X module 300 either sends no V2X messages or sets the vehicle type to "unknown" in the V2X messages.

[0070] If an external sensor signal in the form of the wheel sensor signal is present, V2X messages with the correct vehicle type are sent in a further method step 406. Optionally, it is conceivable to insert an additional step between steps 402 and 406 to check the plausibility of the movement quantity. This occurs as long as the wheel sensor information is available. If this is no longer available, no V2X messages are sent or the vehicle type is set to "unknown" in the V2X messages.

[0071] Figure 4 shows a two-lane vehicle 14a, wherein the vehicle 14a has, instead of the previously described V2X module 300, a lighting device 500a comprising a lighting unit 501a and a V2X unit 502a.

[0072] The lighting unit 501 a is formed, for example, by a plurality of preferably individually controllable light-emitting diodes or laser diodes, which are not shown in detail.

[0073] The two-track vehicle 14a is configured as an electric bicycle 16a, as before, and has the lighting device 500a, which is embodied, for example, as a front light 506a. The lighting device 500a includes the V2X unit 502a.

[0074] The lighting device 500a, like the V2X module 300 above, is designed as a retrofit component. For this purpose, the lighting device 500a has a vehicle interface (not shown in detail), via which a housing 508a of the lighting device 500a can be mechanically and preferably detachably connected to the electric bicycle 16a. Alternatively, it would also be conceivable for the lighting device 500a to be designed as a component permanently integrated into the vehicle 14a. The lighting device 500a can have an electrical interface designed for electrical connection to the vehicle 14. The lighting device 500a can be supplied with power via the electrical connection, and data exchange between the lighting device 500a and the vehicle 14a can be enabled. Alternatively or additionally, it is also conceivable for the lighting device 500a to have its own power supply.The lighting device 500a comprises a control unit for controlling the lighting. In particular, the lighting device 500a comprises a sensor unit, which, for example, has at least one brightness sensor. Advantageously, the lighting can thus be controlled based on the detected brightness.

[0075] The V2X unit 502a has a V2X communication interface (not shown in detail) for sending and receiving V2X messages as described above. Thus, for example, V2X messages can be exchanged between the lighting device 500a and the V2X module 300 of Figure 1. Additionally, it is also conceivable for the V2X unit 502a to have at least one short-range and / or at least one long-range wireless communication interface.

[0076] The V2X unit 502a has a sensor unit (not shown) that essentially corresponds to the sensor unit of the previously described V2X module 300 and includes at least one inertial sensor and a GNSS receiver. Furthermore, the sensor unit of the V2X unit 502a includes a wheel sensor 510a, wherein the wheel sensor 510a is not arranged in the housing 508a, but is connected to it via a cable 512a and arranged on the wheel fork 21a. Alternatively, however, it would also be conceivable to arrange the wheel sensor 510a in the housing 508a of the lighting device 500a. The front wheel 22a of the electric bicycle 16a has a signal generator 34a in the form of a rim magnet, via which wheel sensor information can be detected by the wheel sensor.

[0077] The V2X unit 502a has a movement determination unit for determining a movement variable and a state determination unit for determining a state based on the movement characteristic and the wheel sensor information, which essentially correspond to the movement determination unit and state determination unit described in connection with the V2X module 300 and are intended to carry out essentially the same methods.

[0078] Additionally, it is conceivable that data from the sensor unit of the V2X unit 502a and / or information from the motion detection unit and / or the state determination unit of the V2X unit 502a are provided to the control unit of the lighting device 500a, so that the lighting can be controlled based on these data. The lighting can be controlled by varying the luminous intensity, by flashing, by directing the light beam of the lighting, by changing the color of the lighting, or the like. This can advantageously alert or warn the driver and / or other road users.

Claims

Claims 1 . Lighting device for a vehicle (14a), in particular for a bicycle, wherein the lighting device (500a) has at least one lighting unit (501a) for illuminating a road section and a V2X unit (502a), wherein the V2X unit (502a) has a V2X communication interface for sending and receiving V2X messages 2. Lighting device according to claim 1, characterized in that the lighting device (500a) has a housing (508a) with a vehicle interface for mechanically connecting the lighting device (500a) to the vehicle (14a).

3. Lighting device according to one of the preceding claims, characterized in that the V2X unit (502a) has a state determination unit which is designed to determine a state of the V2X unit (502a) based on a movement characteristic.

4. Lighting device according to one of the preceding claims, characterized in that the lighting device (500a) has an electrical interface, wherein the lighting device (500a) is designed via the electrical interface to supply energy and / or to provide information, in particular to provide the movement characteristic.

5. Lighting device according to one of the preceding claims, characterized in that the V2X unit (502a) has a state determination unit which is designed to determine a state of the V2X unit (502a) based on wheel sensor information.

6. Lighting device according to one of the preceding claims, characterized in that the lighting device (500a) has a wheel sensor for detecting the wheel sensor information.

7. Lighting device according to one of the preceding claims, characterized in that the V2X communication interface has at least one antenna element 8. Lighting device according to one of the preceding claims, characterized in that the state determination unit is designed to determine a vehicle type and / or a proper attachment of the V2X unit (502a), in particular the lighting device (500a), to the vehicle.

9. Lighting device according to one of the preceding claims, characterized in that the lighting unit (501 a) can be controlled based on information and / or a V2X message from the V2X unit (502 a).

10. Lighting device according to one of the preceding claims, characterized in that the lighting device (500a) is designed as a front light (506a).

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