Portable parking assistance system, method, and computer program product

Description

[0001] The present invention relates to a portable parking assistance system, a method and a computer program product.

[0002] Vehicles are known that have an automated parking function, which is particularly suitable for automatically parking the vehicle in a suitable parking garage or parking space. Such systems are referred to, for example, as automated valet parking systems. A distinction is made between two types. In the first type, the vehicle controls itself, with the parking garage having, for example, suitable features that serve to orient the vehicle, such as ARUCO codes. In a second type, the vehicle is remotely controllable, with the parking garage having, for example, sensors and path planning devices to control the vehicle. There can be various intermediate stages between these two types, in which the functions are distributed differently between the vehicle and the parking garage.

[0003] In Type 2 valet parking systems, the sensors and logic are located primarily within the infrastructure, such as a parking garage, and are therefore stationary. Deploying such a system at a specific location has traditionally required very complex installation and commissioning. From an economic perspective, this is only worthwhile if there is long-term demand for the system. Therefore, existing systems are not suitable for use in situations of temporary high demand, such as during a major event. Furthermore, conventional systems require existing infrastructure into which they can be integrated. These systems are therefore also unsuitable for use in locations without such infrastructure.

[0004] CN 111 439 255 A refers to a roof box, control box and control unit working together to achieve autonomous parking.

[0005] US 9 581 997 B1 discloses a method and system for cloud-based communication for automated driverless movement.

[0006] US 2020 / 209877 A1 relates to a method for automated valet parking. The method includes initiating automated valet parking, transmitting a target position and a guidance route from an infrastructure facility to a vehicle, executing autonomous driving to the target position along the guidance route, measuring a vehicle position, calculating the accuracy of the measured vehicle position, and executing autonomous parking at the target position.

[0007] Against this background, it is an object of the present invention to provide a parking assistance system that overcomes the above-mentioned disadvantages of conventional parking assistance systems.

[0008] According to a first aspect, a transportable parking assistance system is proposed which is suitable for assembly and disassembly at a plurality of different locations and which, when assembled at a specific location, is configured to control a number of vehicles within a predetermined area of the specific location.The portable parking assistance system comprises a number of sensors that can be arranged in the predetermined area, each of the sensors being configured to detect vehicles located in a respective specific detection area of the predetermined area and to wirelessly transmit a corresponding sensor signal, and it comprises a control device that is configured to receive the sensor signals from the sensors, to determine a respective position of the vehicles depending on the received sensor signals and to control each of the vehicles depending on the determined positions of the vehicles and on a specific digital map of the predetermined area.

[0009] This parking assistance system has the advantage of being flexible and deployable at a variety of locations. The parking assistance system can therefore be deployed for individual events, such as trade fairs, concerts, sporting events, and the like. Furthermore, the parking assistance system can be deployed at locations that lack the infrastructure into which the parking assistance system could be integrated. These include, for example, open-air parking lots, company or business premises, temporarily used storage and / or parking areas outside buildings, and the like. Due to the wireless transmission of the sensor signals, complex cabling between the sensors and the control unit is not necessary, making the parking assistance system highly flexible.In particular, the parking assistance system can also be flexibly expanded with additional sensors, for example to subsequently enlarge or otherwise adapt the predetermined area and / or to enable more precise detection of vehicles in areas identified as problematic.

[0010] When assembled, the transportable parking assistance system constitutes a Type 2 valet parking assistance system. It differs from conventional Type 2 valet parking assistance systems in particular in that it is designed to be assembled and disassembled at different locations, rather than being permanently installed at a specific location. When disassembled, the parking assistance system is disassembled into a number of individual parts or components. When disassembled, the parking assistance system can be transported to the desired location, in particular using conventional means such as a truck, train, ship, and / or aircraft.

[0011] The predetermined area is defined, for example, by the provider or operator of the parking assistance system. This occurs, for example, in a planning phase that precedes the installation of the parking assistance system. During the planning phase, the predetermined area is determined, but an approximate arrangement of the sensors in the predetermined area, their respective desired detection ranges, and a desired subdivision of the predetermined area into driving corridors and parking spaces are also determined. The above features determined during the planning phase are not necessarily exact, but merely serve to enable the installation of the parking assistance system. During and / or after installation of the parking assistance system, some or all of the features mentioned can be adapted to the actual circumstances.

[0012] The core elements of the portable parking assistance system are the number of sensors and the control device. The number of sensors comprises a set N greater than or equal to one sensors (N ≥ 1). Different sensors of the number can form different sensor types. In the assembled state of the parking assistance system, each of the sensors is configured to detect a specific detection area of the predetermined area. The specific detection area depends on the arrangement and field of view of each sensor, but the specific detection area for each sensor can also be specifically limited. For example, parts of a detection area that are completely or partially obscured by an object, such as a plant, can be masked out or ignored. Furthermore, it can be helpful to limit the overlap of multiple detection areas of multiple sensors in order to avoid overdetermination.

[0013] Depending on the sensor type, various objects located within the detection area can be detected. All sensors of the parking assistance system are configured to detect vehicles within the detection area. The sensors can advantageously be configured to detect objects such as people or larger animals. For safety reasons, it is advantageous to set a lower threshold for an object size of approximately 10-20 cm.

[0014] The specific detection area is defined, in particular, in a specific, uniform coordinate system of the parking assistance system in its assembled state. The position of all spatially distributed elements of the parking assistance system, whose respective positions are relevant for the operation of the parking assistance system, is known in the specific coordinate system. This means that the coordinates of the respective element are already available in the specific coordinate system, or a unique coordinate transformation is available for transforming the individual coordinates of a respective element into the specific coordinate system.

[0015] The specific coordinate system can be defined specifically for the parking assistance system, for example, by specifying a specific point in the predetermined area as the zero point or origin of the coordinate system and specifying a specific length as the basic unit of measurement. However, the specific coordinate system can also be a predetermined coordinate system, in particular of a global satellite-based navigation system such as GPS.

[0016] The specific digital map comprises, in particular, an abstract representation of the positions relevant for the operation of the parking assistance system, for example the positions of the sensors in the predetermined area and their respective detection range, the areas of the predetermined area that are intended as driving corridors or parking spaces, and optionally further elements, such as natural obstacles or special features of the predetermined area, traffic control elements of the parking assistance system, and the like. Therefore, path planning and vehicle control can be carried out in particular on the basis of the digital map. During operation of the parking assistance system, it can be provided that the digital map further comprises a representation for each vehicle or other mobile object that is located in the predetermined area. A collision calculation to avoid collisions can then also be carried out on the basis of the digital map.

[0017] In one embodiment, the operation of the parking assistance system in the assembled state is based, for example, on the positions of sensors and their detection ranges determined in the planning phase, as well as on the digital map of the predetermined area determined in the planning phase. When setting up the parking assistance system, care must be taken to ensure that the sensors are arranged and aligned with high precision as planned in the planning phase. Path planning for individual vehicles during operation is based on the predefined digital map. This has the advantage that the sensors only need to be configured to wirelessly transmit their respective sensor signals for operation in the parking assistance system.On the other hand, this embodiment is not very flexible with regard to actual conditions at the specific location, which may not have been known in the planning phase, as well as with regard to a possible later extension of the parking assistance system with additional sensors.

[0018] A short-range wireless network, such as WLAN, is used to wirelessly transmit the sensor signals. However, a cellular network or other well-known wireless network technology can also be used.

[0019] The control device is at least partially implemented in hardware. The control device can comprise specific hardware, such as an ASIC (Application Specific Implemented Circuit), or general-purpose hardware, such as a microprocessor for executing a computer program. This means that the control device can also be partially implemented in software. In this case, the control device comprises a computer program product, a function, a routine, an algorithm, a program code, and / or an executable object.

[0020] The control device is configured to receive the sensor signals from the sensors, to determine a respective position of the vehicles depending on the received sensor signals, and to control each of the vehicles depending on the determined positions of the vehicles and on a specific digital map of the predetermined area. The control device can also be said to have a receiving unit for receiving the sensor signals from the sensors, a determination unit for determining a respective position of the vehicles depending on the received sensor signals, and a control unit for controlling the vehicles depending on the respective determined position and on the specific digital map. The respective unit can be implemented using hardware and / or software. In a hardware implementation, the respective unit can be designed, for example, as a computer or as a microprocessor.In a software implementation, the respective unit can be designed as a computer program product, as a function, as a routine, as an algorithm, as part of a program code or as an executable object.

[0021] Controlling the vehicles includes, for example, determining a respective trajectory for each vehicle. The trajectory leads, for example, from a current position of the vehicle to a target position. The target position is, in particular, a specific parking space within the predetermined area, or is a handover area in which a user takes over the vehicle from the parking assistance system. The trajectory is determined, in particular, based on the specific digital map that includes the intended driving corridors and parking spaces. Based on the determined trajectory, the vehicle is controlled such that it follows the determined trajectory. For this purpose, the parking assistance system transmits, for example, corresponding control commands to the vehicle. A wireless communication technology, such as WLAN, a cellular connection, or the like, is preferably used to transmit the control commands.

[0022] In embodiments, the portable parking assistance system comprises a transmitter configured to transmit control commands to the vehicles.

[0023] The portable parking assistance system is particularly suitable for use in uncovered areas, i.e., outdoors, or in halls with very high roofs. It is also advantageous if the predetermined area is essentially free of obstacles that could obscure the detection areas. In this case, a comparatively small number of sensors are sufficient to cover large areas and thus make them usable by the parking assistance system.

[0024] According to one embodiment of the portable parking assistance system, the sensors each have a position sensor which is configured to determine and output a position of the respective sensor in the assembled state of the parking assistance system, wherein the control device is configured to receive the output position and to determine the specific detection area of the respective sensor in the specific digital map on the basis of the received position.

[0025] The position sensor is, for example, a GPS sensor that determines and outputs the position of the respective sensor in a GPS coordinate system. Alternatively or additionally, the position sensors of different sensors can determine their respective positions relative to the other sensors. In this case, the position sensors are configured, in particular, to perform mutual triangulation and / or multilateration. A network of relative positions determined in this way can be aligned to a specific reference point, for example, a specific sensor, on the specific digital map.

[0026] The output position includes, in particular, an orientation of the respective sensor. The orientation is determined, for example, by an azimuth angle and an elevation angle, which relate, for example, to a center point of the sensor's detection range (i.e., the center point of the detection range lies in the specified direction starting from the sensor). The orientation thus has a fixed, predetermined relationship to the detection range of the respective sensor.

[0027] Based on the received position, the control unit determines the respective detection range in the specific digital map. This sets the detection range of the respective sensor in relation to the coordinate system of the digital map. One could also say that the detection range is calibrated.

[0028] This design therefore has the advantage that the sensors can be arranged flexibly during the setup of the parking assistance system to accommodate the specific conditions of a particular location. Deviations from the arrangement during the planning phase are uncritical as long as the part of the predetermined area in which the vehicles are controlled is completely covered by the sensors. In particular, time-consuming manual measurement of the sensor positions and their respective orientation is eliminated, as the sensors determine and transmit their positions themselves.

[0029] According to a further embodiment of the transportable parking assistance system, the latter comprises a mobile position sensor which is configured to determine and output its position, wherein the control device is configured to receive the output position and to receive area determination information associated with the output positions, and is further configured to determine the specific digital map of the predetermined area as a function of the received position and the associated area determination information.

[0030] With this design, the specific digital map can be defined during or after the parking assistance system is installed. This eliminates the need for complex, precise planning and installation of the parking assistance system. The parking assistance system is therefore highly flexible in its use.

[0031] For example, all sensors in the parking assistance system are first set up, and their detection areas are determined as described above. If the specific digital map has not yet been determined at this point, the positions of the sensors and their detection areas, for example, form the basis for determining the digital map. The mobile position sensor is then guided through the predetermined area. Area determination information is determined for each position of the position sensor, which is transmitted to the control device, which assigns the area determination information to the respective position of the position sensor. In this way, the part of the predetermined area in which the vehicles are to be controlled is scanned.In this way, the predetermined area is divided into sub-areas, each measuring 20 cm x 20 cm, for example, with each of these sub-areas being assigned the relevant area determination information. The area determination information includes, for example, the information that it is a traffic corridor, possibly with a specific direction of travel, a footpath, an emergency exit, a parking space, possibly with information about a specific vehicle type and / or a prioritization, or the like.

[0032] This process is carried out, in particular, under the supervision of an operator who determines the respective area determination information. For example, the operator walks or drives with the position sensor along the predetermined area designated as the travel corridor and determines the area determination information accordingly.

[0033] According to a further embodiment of the transportable parking assistance system, it comprises a mobile position sensor which is configured to determine and output its position independently of the parking assistance system, wherein the sensors are configured to detect the position sensor, and wherein the control device is configured to receive the position output by the position sensor, and is further configured to compare the position received from the position sensor and the position of the position sensor determined on the basis of the sensor signals in order to validate the specific digital map.

[0034] In this embodiment, it is advantageously easy to check whether the positions of various elements in the specific digital map, in particular the positions of the sensors as well as the positions of the detection areas or the boundaries of the detection areas, are correct. One could also say that this validates the specific digital map.

[0035] According to a further embodiment of the transportable parking assistance system, it comprises a number of traffic guidance elements which can be arranged in the predetermined area, wherein each of the traffic guidance elements has a position sensor which is configured to determine and output a position of the respective traffic guidance element in the assembled state of the parking assistance system, wherein the control device is configured to receive the output position and to determine the digital map on the basis of the received position of the respective traffic guidance element.

[0036] According to a further embodiment of the transportable parking assistance system, the control device is configured to validate the control of the vehicles using a validation vehicle, wherein the validation vehicle is configured to be controlled by the parking assistance system and is configured to determine its position independently of the parking assistance system, wherein the control device is configured to compare the position determined on the basis of the number of sensors and the position determined by the validation vehicle.

[0037] The validation vehicle can, for example, be used to demonstrate that the parking assistance system is controlling the vehicles in accordance with regulations, particularly with regard to control precision. If national or regional regulations stipulate that acceptance is required to issue an operating license for the parking assistance system, this can be simplified and automated.

[0038] According to a further embodiment of the transportable parking assistance system, the number of sensors comprises a camera, a radar and / or a lidar.

[0039] In embodiments, cameras with an extended spectral range may be used, for example, including the visual spectral range and a near infrared and / or UV range.

[0040] According to a further embodiment of the portable parking assistance system, the latter comprises a number of holding means, wherein a respective holding means is configured to hold a respective sensor at a specific position in the predetermined area, wherein the sensors are configured for releasable fastening to the holding means.

[0041] The support means include, for example, a tripod, a mast, a frame, a scaffold, a wire rope, a boom, a crane, and the like. It may be provided that one support means holds more than one sensor.

[0042] According to a further embodiment of the portable parking assistance system, the sensors each have a weatherproof housing that provides protection for the electronics of the sensors against the effects of the weather.

[0043] The housing can be made of plastic, metal, a composite material, or the like. The housing is, in particular, waterproof. Furthermore, the housing is preferably designed such that the sensor and its electronics remain sufficiently cooled in sunlight to ensure continuous operation. For this purpose, the housing can provide, for example, cooling surfaces or heat sinks. Furthermore, the housing can have an opening for an antenna that can be connected to the sensor and via which the sensor transmits its sensor signal to the control device.

[0044] According to a further embodiment of the transportable parking assistance system, it comprises a number of mobile energy sources in order to supply the number of sensors with energy in the assembled state of the parking assistance system.

[0045] The mobile energy source is, for example, a battery.

[0046] In embodiments, a photovoltaic module is provided that charges the battery with electrical energy when exposed to sunlight in order to increase the range of the battery.

[0047] According to a second aspect, a method for operating a portable parking assistance system is proposed. The portable parking assistance system is suitable for assembly and disassembly at a plurality of different locations and, when assembled at a specific location, is configured to control a number of vehicles within a predetermined range of the specific location. The method comprises the steps: a) arranging a number of sensors at respective specific positions in the predetermined area according to a specific arrangement, b) detecting vehicles located in a respective specific detection area of the predetermined area by means of the sensors and wirelessly transmitting a corresponding sensor signal, c) receiving the sensor signals from the sensors, d) determining a respective position of the vehicles depending on the received sensor signals, and e) controlling the vehicles depending on the respective determined position and on a specific digital map of the predetermined area.

[0048] The embodiments and features described for the proposed transportable parking assistance system apply accordingly to the proposed method. The method is preferably carried out with the transportable parking assistance system according to the first aspect. The advantages and definitions described for the transportable parking assistance system according to the first aspect apply accordingly to the proposed method.

[0049] Furthermore, a computer program product is proposed which comprises instructions which, when the program is executed by a computer, cause the computer to carry out steps b) - e) of the method described above.

[0050] A computer program product, such as a computer program means, can be provided or delivered, for example, as a storage medium, such as a memory card, USB stick, CD-ROM, DVD, or in the form of a downloadable file from a server in a network. This can be done, for example, in a wireless communications network by transmitting a corresponding file with the computer program product or the computer program means.

[0051] Further possible implementations of the invention also include combinations of features or embodiments described above or below with respect to the exemplary embodiments that are not explicitly mentioned. In this case, the person skilled in the art will also add individual aspects as improvements or additions to the respective basic form of the invention.

[0052] Further advantageous embodiments and aspects of the invention are the subject of the dependent claims and the exemplary embodiments of the invention described below. The invention will be explained in more detail below using preferred embodiments with reference to the accompanying figures. Fig. 1A shows a first schematic representation of an embodiment of a portable parking assistance system in the assembled state; Fig. 1B shows a second schematic representation of the embodiment of a portable parking assistance system in the assembled state; Fig. 2 schematically shows a transmission of sensor signals and control signals; Fig. 3 shows a schematic representation of an embodiment of a portable parking assistance system in the dismantled state; and Fig. 4 shows a schematic block diagram of an embodiment of a method for operating a parking assistance system.

[0053] In the figures, identical or functionally identical elements have been given the same reference numerals unless otherwise stated.

[0054] The Fig. 1A and 1B each show a schematic representation of an embodiment of a portable parking assistance system 100 in the assembled state. For reasons of clarity, the illustration is divided into two figures, each showing different aspects of the portable parking assistance system 100. In this example, the portable parking assistance system 100 comprises seven sensors 102A - 102G and a control device 104. The sensors 102A - 102G are, for example, attached to holding means 108 (see Fig. 3 ) and arranged at specific positions in a predetermined area 110. Each of the sensors 102A - 102G has a specific detection area 103A - 103G, as shown in the Fig. 1A shown schematically. The sensors 102A - 102G are each configured to detect vehicles 200 (see Fig. 2 ) located in their respective detection range 103A - 103G and to generate a corresponding sensor signal SIG (see Fig. 2 ) to the control device 104. The control device 104 receives the sensor signals SIG from the sensors 102A - 102G and determines the respective position of the vehicles 200 on the basis thereof.

[0055] The position of the vehicles 200 refers to a specific coordinate system that assigns a position comprising at least two coordinates to each point of the predetermined area 110. In the Fig. 1B the predetermined area 110 is represented in the form of a specific digital map 112. The specific digital map 112 includes, for example, an identification of the positions of the sensors 102A - 102G and their detection areas 103A - 103G (in the Fig. 1B not shown for reasons of clarity), and includes in particular a division of the predetermined area 110 into a driving corridor 113, several parking spaces 114 (for reasons of clarity, only one of the parking spaces is marked with a reference symbol), a transfer area 115 and unused areas (without reference symbols).

[0056] In this example, the driving corridor 113 is designed as a one-way street. In the transfer area 115, which is detected in particular by the sensor 102A, the respective vehicle 200 is transferred from the user of the vehicle 200 to the parking assistance system 100 for automated parking and reversing. From here, the parking assistance system 100 controls the vehicles 200 and guides them, for example, to a specific parking space 114. When the user wishes to take over the vehicle 200 again, the parking assistance system 100 controls the respective vehicle 200 from the parking space 114 to the transfer area 115.

[0057] The control of the vehicles 200 is exemplified by the Fig. 2 During the control of the vehicles 200, the control device 104 continuously receives current sensor signals SIG from the sensors 102, 102A-102G, on the basis of which it determines the position of the vehicles 200 in the specific digital map 112. It can also be said that the control device 104 monitors the movement of the vehicles 200 via the sensors 102A-102G and controls their movement in the manner of a control loop using corresponding control signals SSIG. The vehicle 200 is, for example, a passenger car or a truck. The vehicle 200 preferably comprises, in particular, a receiver for receiving the control signal SSIG from the control device 104 of the parking assistance system 100, as well as a system configured to execute the received control signals SSIG. It can also be said that the vehicle 200 is remotely controllable by the parking assistance system 100.

[0058] Fig. 3 shows a schematic representation of an embodiment of a transportable parking assistance system 100 in the disassembled state. In this example, the parking assistance system 100 comprises a number 102 of sensors 102A-102G, the control device 104, a number of traffic control elements 106, each configured to determine its position and transmit the determined position to the control device 104, and a number of holding means 108 configured to hold the sensors 102A-102G at specific positions in the predetermined area 110 in the assembled state of the parking assistance system 100. It should be noted that the traffic control elements 106 and the holding means 108 are optional and do not represent necessary components of the transportable parking assistance system 100. This parking assistance system 100 can be compactly stored and easily transported, for example, by truck or the like.

[0059] Fig. 4 shows a schematic block diagram of an embodiment of a method for operating a portable parking assistance system 100, for example the parking assistance system 100 of Fig. 1 or 3 . The parking assistance system 100 is suitable for assembly and disassembly at a plurality of different locations and, when assembled, is designed to control a number of vehicles 200 (see Fig. 2 ) within a predetermined range 110 (see Fig. 1A , 1B ) of the specific location. In a first step S1, a number 102 (see Fig. 2 oder 3 ) of sensors 102A - 102G (see Fig. 1A , 1B or 3 ) are arranged at respective specific positions in the predetermined area 110 according to a specific arrangement. In a second step S2, vehicles 200 that are located in a respective specific detection area 103A - 103G (see Fig. 1A ) of the predetermined area 110, by means of the sensors 102A - 102G, a corresponding sensor signal SIG (see Fig. 2 ) are transmitted wirelessly. In a third step S3, the sensor signals SIG are received. In a fourth step S4, a respective position of the vehicles 200 is determined depending on the received sensor signals SIG. In a fifth step S5, the vehicles 200 are tracked depending on the respective determined position and on a specific digital map 112 (see Fig. 1B or 2 ) of the predetermined area 110. This includes, in particular, determining a trajectory for a respective vehicle and transmitting a control signal SSIG (see Fig. 2 ) the vehicle to be controlled 200.

[0060] Although the present invention has been described using exemplary embodiments, it can be modified in many ways. LIST OF REFERENCE SYMBOLS

[0061] 100 Portable parking assistance system 102 Number of sensors 102A - 102G Sensors 103A - 103G Detection areas 104 Control device 106 Traffic control elements 108 Holding devices 110 Predetermined area 112 Digital map 113 Driving corridor 114 Parking space 115 Transfer area 200 Vehicle S1 - S5Process step SIGSensor signal SSIGControl signal

Claims

1. Portable parking assistance system (100), which is suitable for being set up and dismantled at a plurality of different locations and which is designed, when set up at a particular location, to control a number of vehicles (200) within a predetermined region (110) of the particular location, having a number (102) of sensors (102A - 102G) which can be arranged in the predetermined region (110), wherein each of the sensors (102A - 102G) is designed to detect vehicles (200) located in a respective specific detection range (103A - 103G) of the predetermined region (110) and to wirelessly transmit a corresponding sensor signal (SIG), and having a control device (104), which is designed to receive the sensor signals (SIG) from the sensors (102A - 102G), to determine a respective position of the vehicles (200) on the basis of the received sensor signals (SIG), and control each vehicle (200) on the basis of the determined positions of the vehicles (200) and a specified digital map (112) of the predetermined region (110).

2. Portable parking assistance system according to Claim 1, characterized in that the sensors (102A - 102G) each have a position sensor, which is designed to determine and output a position of the respective sensor (102A - 102G) when the parking assistance system (100) is set up, wherein the control device (104) is designed to receive the output position and to determine the particular detection range (103A - 103G) of the respective sensor (102A - 102G) in the specified digital map (112) on the basis of the received position.

3. Portable parking assistance system according to Claim 1 or 2, characterized in that said system comprises a mobile position sensor which is designed to determine and output its position, wherein the control device (104) is designed to receive the output position and to receive surface determination information (113, 114, 115) assigned to one of the output positions, and further designed to determine the specified digital map (112) of the predetermined region (110) on the basis of the received position and the assigned surface determination information (113, 114, 115).

4. Portable parking assistance system according to any of the preceding claims, characterized in that said system comprises a number of traffic control elements (106), which can be arranged in the predetermined region (110), wherein each of the traffic control elements (106) has a position sensor which is designed to determine and output a position of the respective traffic control element (106) when the parking assistance system (100) is set up, wherein the control device (104) is designed to receive the output position and to determine the specified digital map (112) of the predetermined region (110) on the basis of the received position of the respective traffic control element (106).

5. Portable parking assistance system according to any of the preceding claims, characterized in that said system comprises a mobile position sensor, which is designed to determine and output its position independently of the parking assistance system (100), wherein the sensors (102A - 102G) are designed to detect the position sensor, and wherein the control device (104) is designed to receive the position output from the position sensor, and further designed to compare the position received from the position sensor and the position of the position sensor determined on the basis of the sensor signals (SIG), in order to validate the specified digital map (112).

6. Portable parking assistance system according to any of the preceding claims, characterized in that the control device (104) is designed to validate the control of the vehicles (200) using a validation vehicle, wherein the validation vehicle is designed to be controlled by the parking assistance system (100) and designed to determine its position independently of the parking assistance system (100), wherein the control device (104) is designed to compare the position determined on the basis of the number (102) of sensors (102A - 102G) and the position determined by the validation vehicle.

7. Portable parking assistance system according to any of the preceding claims, characterized in that the number (102) of sensors (102A - 102G) comprises a camera, a radar and / or a lidar.

8. Portable parking assistance system according to any of the preceding claims, characterized in that said system further comprises a number of holding means (108), wherein each holding means (108) is designed to hold a respective sensor (102A - 102G) at a specific position in the predetermined region (110), wherein the sensors (102A - 102G) are designed to be releasably attached to the holding means (108).

9. Portable parking assistance system according to any of the preceding claims, characterized in that the sensors (102A - 102G) each have a weatherproof housing, which provides protection for an electronics unit of the sensors against weather effects.

10. Portable parking assistance system according to any of the preceding claims, characterized by a number of mobile energy sources, which are designed to supply the number (102) of sensors (102A - 102G) with energy when the parking assistance system (100) is set up.

11. Method for providing and operating a portable parking assistance system (100), which is suitable for being set up and dismantled at a plurality of different locations and which is designed, when set up at a particular location, to control a number of vehicles (200) within a predetermined region (110) of the particular location, the method comprising the steps of: a) arranging (S1) a number (102) of sensors (102A - 102G) at respective specific positions in the predetermined region (110) according to a specific arrangement; b) detecting (S2) vehicles (200) located in a respective specific detection range (103A - 103G) of the predetermined region (110) by means of the sensors (102A - 102G) and wirelessly transmitting a corresponding sensor signal (SIG), c) receiving (S3) the sensor signals (SIG), d) determining (S4) a respective position of the vehicles (200) on the basis of the received sensor signals (SIG), and e) controlling (S5) the vehicles (200) on the basis of the respective determined position and a specified digital map (112) of the predetermined region (110).

12. Computer program product, comprising instructions that, when the program is executed by a computer, cause said computer to carry out the steps b) - e) of the method according to Claim 11.