System and method for controlling charging door of vehicle based on UWB

Abstract

The invention relates to a system and a method for controlling a charging door of a vehicle based on UWB. The system comprises a charging door covering a charging port of a vehicle; the charging device can be electrically connected with a charging port of the vehicle and is configured to charge the vehicle, the charging device comprises first UWB communication equipment, and the first UWB communication equipment can send and receive UWB communication signals; a vehicle-mounted UWB communication device configured to detect position information of the charging device based on the received UWB communication signal of the charging device; a vehicle-mounted camera device configured to capture image information in the vicinity of a charging door of the vehicle; a main control device configured to generate a charging door control signal for opening or closing a charging door based on position information of the charging device and image information in the vicinity of the charging door of the vehicle, in a case where the vehicle is stopped; and a charging door control device configured to open or close the charging door based on the charging door control signal of the main control device.

Description

Technical Field

[0001] This invention relates to the field of vehicle control technology, and more specifically, to a system and method for controlling the charging gate of a vehicle based on Ultra Wideband (UWB). Background Technology

[0002] With the continuous advancement of vehicle control technology, users have increasingly higher demands for charging convenience and intelligence.

[0003] Existing methods for opening vehicle charging doors mainly include using the car key, an inside button, or an outside button. These traditional methods are not convenient to some extent, especially in cold or rainy weather, where users may need to operate them manually, which is not only inconvenient but may also cause discomfort.

[0004] Furthermore, if the charging port markings are unclear, it may cause difficulties for users when charging, or even damage the vehicle due to improper operation.

[0005] Therefore, the design of vehicle charging doors needs to evolve towards a more intelligent and user-friendly direction, so as to provide a more convenient user experience.

[0006] The above description of the background technology is only for the purpose of facilitating a deeper understanding of the technical solution of the present invention (the technical means used, the technical problems solved, and the technical effects produced, etc.), and should not be regarded as an admission or in any form an implication that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0007] The purpose of this invention is to detect the location of charging devices and / or users based on Ultra Wide Band (UWB) communication technology, thereby providing users with a more intelligent system and method for controlling the charging gate.

[0008] According to an embodiment of the present invention, a system for controlling a vehicle's charging door based on UWB is provided, comprising: a charging door covering the vehicle's charging port; a charging device electrically connected to the vehicle's charging port and configured to charge the vehicle, the charging device including a first UWB communication device capable of sending and receiving UWB communication signals; and an in-vehicle UWB communication device comprising a UWB processing module and multiple in-vehicle UWB communication modules, wherein the UWB processing module and the multiple in-vehicle UWB communication modules are communicatively connected, and the multiple in-vehicle UWB communication modules are configured to perform UWB communication with the first UWB communication device of the charging device and transmit the received UWB communication signals from the charging device. The system includes a UWB processing module that detects the location information of the charging device based on the received UWB communication signal from the charging device; an onboard camera configured to capture image information near the charging door of the vehicle; a main control device communicatively connected to both the onboard UWB communication device and the onboard camera, wherein the main control device is configured to generate a charging door control signal to open or close the charging door based on the location information of the charging device and the image information near the charging door of the vehicle when the vehicle is parked; and a charging door control device communicatively connected to the main control device and electrically connected to the charging door of the vehicle, wherein the charging door control device is configured to open or close the charging door based on the charging door control signal from the main control device.

[0009] According to an embodiment of the present invention, a system for controlling a vehicle's charging door based on UWB further includes a user carrying a second UWB communication device capable of sending and receiving UWB communication signals; a plurality of vehicle-mounted UWB communication modules of the vehicle-mounted UWB communication device are configured to communicate with the user's second UWB communication device via UWB, and to send the received UWB communication signals from the user to a UWB processing module of the vehicle-mounted UWB communication device, the UWB processing module detecting the user's location information based on the received UWB communication signals from the user; the main control device is further configured to generate a charging door control signal that causes the charging door to open or close based on the user's location information, the location information of the charging device, and image information near the vehicle's charging door.

[0010] Preferably, the main control device is further configured to: detect whether the position of the charging device is within the set range of the vehicle; when the position of the charging device is detected to be within the set range of the vehicle, determine whether the distance between the charging device and the charging door of the vehicle is less than a first predetermined distance; when the distance between the charging device and the charging door of the vehicle is determined to be less than the first predetermined distance, determine whether the charging device is close to the charging door of the vehicle based on image information near the charging door of the vehicle; when the charging device is determined to be close to the charging door of the vehicle, generate a charging door control signal to open the charging door.

[0011] Preferably, the main control device is further configured to: detect whether the position of the charging device is within a set range of the vehicle; when the position of the charging device is detected to be within the set range of the vehicle, determine whether the distance between the user and the charging device is less than a second predetermined distance; when the distance between the user and the charging device is determined to be less than the second predetermined distance, determine whether the distance between the user or the charging device and the charging door of the vehicle is less than a first predetermined distance; when the distance between the user or the charging device and the charging door of the vehicle is determined to be less than the first predetermined distance, determine whether the charging device is close to the charging door of the vehicle based on image information near the charging door of the vehicle; when the charging device is determined to be close to the charging door of the vehicle, generate a charging door control signal to open the charging door.

[0012] Preferably, the vehicle's set range is a predetermined distance range between the charging device and the front, rear, left, and right sides of the vehicle; the predetermined distance is set within the range of 3m to 6m; the first predetermined distance is set within the range of 0.5m to 1.5m; and the second predetermined distance is set within the range of 0.5m to 1.5m.

[0013] Preferably, the main control device is further configured to: identify whether the cutting ratio of different circles in the image is the same based on image information near the charging door of the vehicle; when it is identified that the cutting ratio of different circles in the image is the same, it is determined that the charging device is close to the charging door of the vehicle.

[0014] Preferably, the main control device is further configured to: when the vehicle's charging door is open, detect whether the charging device is electrically connected to the vehicle's charging port within a predetermined time; when the charging device is detected to be electrically connected to the vehicle's charging port within the predetermined time, determine that the charging device is charging the vehicle; when the charging device is charging the vehicle, detect whether the charging device is electrically disconnected from the vehicle's charging port; when the charging device is detected to be electrically disconnected from the vehicle's charging port, determine whether the distance between the charging device and the vehicle's charging door is greater than a first predetermined distance; when the distance between the charging device and the vehicle's charging door is determined to be greater than the first predetermined distance, generate a charging door control signal to close the charging door; the predetermined time is set within the range of 20s to 40s.

[0015] Preferably, the main control device is further configured to generate a charging door control signal to close the charging door when the charging device is not electrically connected to the charging port of the vehicle within a predetermined time, provided that the charging door of the vehicle is open.

[0016] According to an embodiment of the present invention, a system for controlling a vehicle's charging door based on UWB further includes: a sound output device electrically connected to a main control device and configured to issue an audible alarm based on a control signal from the main control device; an indicator device electrically connected to the main control device and configured to illuminate an indicator light based on a control signal from the main control device; the main control device is further configured to: when generating a charging door control signal that causes the charging door to open or close, generate a control signal that causes the sound output device to issue an audible alarm and / or causes the indicator device to illuminate an indicator light.

[0017] Preferably, the communicative connection includes a connection via wired communication; the wired communication method includes a controller area network, a universal serial bus, a high-definition multimedia interface, and a digital video interface.

[0018] According to an embodiment of the present invention, a method for controlling a vehicle's charging door based on UWB is provided, comprising: sending and receiving UWB communication signals by a first UWB communication device of the charging device; detecting the location information of the charging device by an on-board UWB communication device based on the received UWB communication signals of the charging device; capturing image information near the charging door of the vehicle by an on-board camera; generating a charging door control signal to open or close the charging door by a main control device based on the location information of the charging device and the image information near the charging door of the vehicle when the vehicle is parked; and opening or closing the charging door by a charging door control device based on the charging door control signal of the main control device.

[0019] The method for controlling the charging door of a vehicle based on an embodiment of the present invention further includes: sending and receiving UWB communication signals by a second UWB communication device carried by the user; detecting the user's location information by an on-board UWB communication device based on the received UWB communication signals from the user; and generating a charging door control signal to open or close the charging door by a main control device based on the user's location information, the location information of the charging device, and image information near the charging door of the vehicle.

[0020] The method for controlling a vehicle's charging door based on a UWB embodiment of the present invention further includes: detecting whether the position of the charging device is within a set range of the vehicle; when the position of the charging device is detected to be within the set range of the vehicle, determining whether the distance between the charging device and the vehicle's charging door is less than a first predetermined distance; when the distance between the charging device and the vehicle's charging door is determined to be less than the first predetermined distance, determining whether the charging device is close to the vehicle's charging door based on image information near the vehicle's charging door; and when the charging device is determined to be close to the vehicle's charging door, generating a charging door control signal to open the charging door.

[0021] The method for controlling a vehicle's charging door based on a UWB embodiment of the present invention further includes: detecting whether the location of the charging device is within a set range of the vehicle; when the location of the charging device is detected to be within the set range of the vehicle, determining whether the distance between the user and the charging device is less than a second predetermined distance; when the distance between the user and the charging device is determined to be less than the second predetermined distance, determining whether the distance between the user or the charging device and the vehicle's charging door is less than a first predetermined distance; when the distance between the user or the charging device and the vehicle's charging door is determined to be less than the first predetermined distance, determining whether the charging device is close to the vehicle's charging door based on image information near the vehicle's charging door; and when the charging device is determined to be close to the vehicle's charging door, generating a charging door control signal to open the charging door.

[0022] Preferably, the vehicle's set range is a predetermined distance range between the charging device and the front, rear, left, and right sides of the vehicle; the predetermined distance is set within the range of 3m to 6m; the first predetermined distance is set within the range of 0.5m to 1.5m; and the second predetermined distance is set within the range of 0.5m to 1.5m.

[0023] The method for controlling the charging door of a vehicle based on an embodiment of the present invention further includes: identifying whether the cutting ratios of different circles in the image are the same based on image information near the charging door of the vehicle; when it is identified that the cutting ratios of different circles in the image are the same, determining that the charging device is close to the charging door of the vehicle.

[0024] The method for controlling a vehicle's charging door based on an embodiment of the present invention further includes: when the vehicle's charging door is open, detecting whether a charging device is electrically connected to the vehicle's charging port within a predetermined time; when the charging device is detected to be electrically connected to the vehicle's charging port within the predetermined time, determining that the charging device is charging the vehicle; when the charging device is charging the vehicle, detecting whether the charging device is electrically disconnected from the vehicle's charging port; when the charging device is detected to be electrically disconnected from the vehicle's charging port, determining whether the distance between the charging device and the vehicle's charging door is greater than a first predetermined distance; when it is determined that the distance between the charging device and the vehicle's charging door is greater than the first predetermined distance, generating a charging door control signal to close the charging door; wherein the predetermined time is set in the range of 20s to 40s.

[0025] The method for controlling the charging door of a vehicle based on an embodiment of the present invention further includes: when the charging door of the vehicle is open, generating a charging door control signal to close the charging door when the charging device is not electrically connected to the charging port of the vehicle for a predetermined time.

[0026] The method for controlling the charging door of a vehicle based on an embodiment of the present invention further includes: when a charging door control signal for opening or closing the charging door is generated, a control signal is generated by the main control device to cause the sound output device to emit an audible alarm and / or to cause the indicator device to illuminate an indicator light.

[0027] The present invention adopts the above technical solution, which has the following beneficial effects:

[0028] 1. Automated Operation: Utilizing Ultra Wide Band (UWB) communication technology, the charging door can be automatically opened when the charging device or a user approaches the vehicle. This automated operation, requiring no manual intervention, improves ease of use, especially in inclement weather (such as rain, snow, or extreme cold), eliminating the need for manual opening and closing.

[0029] 2. Assistive Guidance System: By installing indicator lights or speakers near the charging port, visual and auditory guidance is provided to ensure the correctness and safety of the charging connection. These indicators, based on different charging status changes, such as color changes or voice prompts, help users easily identify and complete the charging process.

[0030] 3. Enhanced user experience: The integration of intelligent technologies simplifies the charging process and improves overall user satisfaction with the vehicle.

[0031] 4. Security and Reliability: The introduction of UWB technology also adds anti-theft features, as only authorized devices can trigger the opening of the charging door.

[0032] 5. Adaptability and compatibility: Supports multiple charging and starting methods, including traditional car keys, mobile applications or other smart devices, to adapt to different users' habits and technical requirements.

[0033] In summary, by combining UWB wireless communication technology and user-friendly design, this invention not only improves the convenience and efficiency of vehicle charging, but also enhances the safety and user-friendliness of the entire charging process. Attached Figure Description

[0034] The exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. For clarity, the same components in different drawings are shown with the same reference numerals. It should be noted that the drawings are for illustrative purposes only and are not necessarily drawn to scale. In these drawings:

[0035] Figure 1 A block diagram illustrating a system for controlling the charging door of a vehicle according to an embodiment of the present invention.

[0036] Figure 2 A flowchart illustrating a method for controlling the charging gate of a vehicle according to an embodiment of the present invention.

[0037] Figure 3 A flowchart illustrating a system and method for controlling a vehicle's charging gate based on a UWB according to one embodiment of the present invention is provided.

[0038] Figure 4 A flowchart illustrating a system and method for controlling a vehicle's charging gate based on UWB according to another embodiment of the present invention is provided. Detailed Implementation

[0039] The following provides a detailed description of the embodiments of the present invention. These embodiments are implemented based on the technical solution of the present invention, and provide detailed implementation methods and specific operation processes. However, the scope of protection of the present invention is not limited to the following embodiments.

[0040] In the following, embodiments of the invention will be described in detail with reference to the accompanying drawings.

[0041] Figure 1 This diagram illustrates a system for controlling a vehicle's charging door based on an embodiment of the present invention using Ultra Wide Band (UWB). The system for controlling a vehicle's charging door based on an embodiment of the present invention may include: a charging door 100, a charging device 200, an onboard UWB communication device 300, an onboard camera device 400, a main control device 500, and a charging door control device 600.

[0042] The charging door 100 can cover the vehicle's charging port (not shown). The main function of the charging door 100 is to protect the charging port from environmental factors (such as rain, snow, dust, etc.), avoid damage and corrosion, and extend the service life of the charging port.

[0043] The charging device 200 can be electrically connected to the vehicle's charging port and can be configured to charge the vehicle. The charging device 200 may include a UWB communication device capable of sending and receiving UWB communication signals.

[0044] According to embodiments of the present invention, the charging device 200 is a general term encompassing various charging devices, specifically including AC charging guns and / or DC charging guns, suitable for slow charging in homes or commercial settings, fast charging for long-distance travel, or charging in urgent need of charging. Furthermore, the charging device 200 may also include a robotic arm equipped with a charging gun for automatically charging electric vehicles. The robotic arm can automatically locate the vehicle's charging port and connect to the charging gun, providing users with convenient charging services.

[0045] Furthermore, the UWB-based vehicle charging door control system according to an embodiment of the present invention may include a user, who may be a driver or other person riding in the vehicle. The user may carry a UWB communication device capable of sending and receiving UWB communication signals. This UWB communication device may include a car key and / or a mobile device, etc. The mobile device may include any portable mobile device, such as a mobile phone, tablet computer, etc.

[0046] Ultra-wideband (UWB) technology is a wireless communication technology that uses nanosecond-level narrow pulses for data transmission. UWB technology can achieve positioning accuracy at the centimeter or even millimeter level, which is highly advantageous for capturing detailed motion trajectories and changes in altitude. The extremely narrow time width of UWB signals allows the receiver to achieve extremely high temporal resolution during measurement, thus ensuring positioning accuracy. UWB technology supports not only two-dimensional planar positioning but also three-dimensional spatial positioning. This means it can detect the movement of charging devices and / or users in three-dimensional space, including vertical movement, thereby completely recording the motion trajectory. With its high precision, multi-dimensional spatial positioning capabilities, and suitability for complex environments, UWB positioning technology has become an ideal choice for detecting the motion trajectories of charging devices and / or users.

[0047] The vehicle-mounted UWB communication device 300 may include a UWB processing module and multiple vehicle-mounted UWB communication modules. The UWB processing module can be communicatively connected to each of the multiple vehicle-mounted UWB communication modules via wired communication. The multiple vehicle-mounted UWB communication modules can be configured to communicate with the charging device 200 and / or the user's UWB communication device via UWB, and send the received UWB communication signals from the charging device 200 and / or the user to the UWB processing module. The UWB processing module detects the location information of the charging device 200 and / or the user based on the received UWB communication signals, and converts the detected location information into vehicle-mounted communication signals.

[0048] According to embodiments of the present invention, wired communication methods may include Controller Area Network (CAN), Universal Serial Bus (USB), High Definition Multimedia Interface (HDMI), Digital Visual Interface (DVI), etc. Among these, CAN communication methods may include powertrain CAN (P_CAN), body control CAN (B_CAN), chassis control CAN (C_CAN), etc. However, embodiments of the present invention are not limited to the above-mentioned communication methods.

[0049] The number of vehicle-mounted UWB communication modules can be three, four, five, six, or more. According to an embodiment of the present invention, there can be five vehicle-mounted UWB communication modules, including a slave vehicle-mounted UWB communication module located at the left front corner of the vehicle, a slave vehicle-mounted UWB communication module located at the right front corner of the vehicle, a slave vehicle-mounted UWB communication module located at the left rear corner of the vehicle, a slave vehicle-mounted UWB communication module located at the right rear corner of the vehicle, and a master vehicle-mounted UWB communication module located near the front of the vehicle's roof. However, the arrangement of the multiple vehicle-mounted UWB communication modules is not limited to this and can be arranged according to the vehicle structure and actual needs.

[0050] Multiple vehicle-mounted UWB communication modules can be communicatively connected to each other via wired communication, and one or more of these modules can be communicatively connected to the main control device 500. According to an embodiment of the present invention, only the master vehicle-mounted UWB communication module can be directly and communicatively connected to the main control device 500, while the other slave vehicle-mounted UWB communication modules can be communicatively connected to the master module.

[0051] Furthermore, one or more of the multiple vehicle-mounted UWB communication modules can also perform communication authentication with the charging device 200 and / or the user's UWB communication device. According to an embodiment of the present invention, only the master vehicle-mounted UWB communication module can perform communication authentication with the charging device 200 and / or the user's UWB communication device, while the other slave vehicle-mounted UWB communication modules can be configured to detect the location information of the charging device 200 and / or the user's UWB communication device.

[0052] The vehicle-mounted camera device 400 can be configured to capture image information near the charging port of the vehicle. According to an embodiment of the invention, the vehicle-mounted camera device 400 can be a camera mounted on the vehicle, including a front camera, a rear camera, a left-side camera, a right-side camera, etc. These cameras can operate individually or in conjunction to provide assistance when the vehicle approaches the charging device.

[0053] The main control device 500 can be communicatively connected to the vehicle-mounted UWB communication device 300 and the vehicle-mounted camera device 400 via wired communication, and can be configured to generate a charging door control signal to open or close the charging door based on the user's location information and / or the location information of the charging device and image information near the charging door when the vehicle is parked. According to an embodiment of the present invention, the main control device 500 can be a body domain controller (BDC).

[0054] According to an embodiment of the present invention, the state of vehicle parking can refer to the state in which the vehicle is no longer moving, thus enabling charging operations. This can include a variety of situations. For conventional internal combustion engine vehicles, it means that the vehicle's engine has been turned off and the ignition system has stopped working. For electric vehicles, it means that the electric motor has stopped receiving electricity.

[0055] Specifically, the main control device 500 can be configured to detect whether the position of the charging device 200 is within the set range of the vehicle; when the position of the charging device 200 is detected to be within the set range of the vehicle, determine whether the distance between the charging device 200 and the charging door 100 of the vehicle is less than a first predetermined distance; when the distance between the charging device 200 and the charging door 100 of the vehicle is determined to be less than the first predetermined distance, determine whether the charging device is close to the charging door 100 of the vehicle based on image information near the charging door 100 of the vehicle; when the charging device 200 is determined to be close to the charging door 100 of the vehicle, generate a charging door control signal to open the charging door 100.

[0056] According to an embodiment of the present invention, the set range of the vehicle can be a predetermined distance range between the charging device 200 and the front, rear, left, and right sides of the vehicle. The predetermined distance can be set in the range of 3m to 6m, preferably 5m. The set range of the vehicle is merely exemplary, and the present invention is not limited thereto. The first predetermined distance can be set in the range of 0.5m to 1.5m, preferably 1m. The range of this first predetermined distance is merely exemplary, and the present invention is not limited thereto.

[0057] According to an embodiment of the present invention, determining whether a charging device 200 is close to the charging door 100 of a vehicle based on image information near the charging door 100 of the vehicle may include: capturing an image near the charging door 100 of the vehicle by an on-board camera device 400; processing the captured image by a main control device 500, which may include filtering, contrast enhancement, or other preprocessing steps to facilitate feature extraction; and identifying specific features in the processed image, which may be specific markings, shapes, or any other visual cues that can be used for detection by the charging device.

[0058] Specifically, the main control unit 500 can examine different circular structures in the image and analyze whether their cutting proportions are the same. If all circles have the same cutting proportion, it indicates that they are in similar positional relationships and distances. If different circles in the image are identified as having the same cutting proportion, the main control unit determines that the charging device 200 is approaching the vehicle's charging gate 100.

[0059] The method described above is one implementation scheme that uses image recognition technology to detect whether a charging device is close to the charging gate of a vehicle. However, different image recognition technologies and algorithms can be used depending on the geometry or markings of different charging devices. Therefore, the present invention is not limited to the above method and can cover any other image analysis technology that can accurately determine the relative position of the charging device and the charging gate.

[0060] The embodiments of the present invention take into account user convenience in actual use while ensuring operational safety. This distance detection and image recognition ensures that the charging process is activated only when the charging device is indeed ready to charge the vehicle and is in a safe position, thereby reducing the risk of misoperation.

[0061] When the vehicle's charging door 100 is open, and the charging device 200 is electrically connected to the vehicle's charging port within a predetermined time, the main control device 500 can determine that the charging device 200 is charging the vehicle. While the charging device 200 is charging the vehicle, the main control device 500 can detect whether the charging device 200 is electrically disconnected from the vehicle's charging port; when it detects that the charging device 200 is electrically disconnected from the vehicle's charging port, it determines whether the distance between the charging device 200 and the vehicle's charging door 100 is greater than a first predetermined distance (which can be set within the range of 0.5m to 1.5m, preferably 1m); when it is determined that the distance between the charging device 200 and the vehicle's charging door 100 is greater than the first predetermined distance, it generates a charging door control signal to close the charging door 100.

[0062] The predetermined time can be set within the range of 20s to 40s, preferably 30s. This range of predetermined time is merely exemplary and the invention is not limited thereto.

[0063] When the charging door 100 of the vehicle is open, if the charging device 200 is not electrically connected to the charging port of the vehicle within a predetermined time, the main control device 500 can generate a charging door control signal to close the charging door 100.

[0064] Alternatively, the main control unit 500 may be configured to detect whether the position of the charging device 200 is within a set range of the vehicle; when the position of the charging device 200 is detected to be within the set range of the vehicle, determine whether the distance between the user and the charging device 200 is less than a second predetermined distance; when the distance between the user and the charging device 200 is determined to be less than the second predetermined distance (indicating that the user approaches the charging device 200 after getting off the vehicle), determine whether the distance between the user or the charging device 200 and the vehicle's charging door 100 is less than a first predetermined distance; when the distance between the user or the charging device 200 and the vehicle's charging door 100 is determined to be less than the first predetermined distance, determine whether the charging device 200 is close to the vehicle's charging door 100 based on image information near the vehicle's charging door 100; when the charging device is determined to be close to the vehicle's charging door 100, generate a charging door control signal to open the charging door 100.

[0065] The second predetermined distance can be set in the range of 0.5m to 1.5m, preferably 1m. This range of the second predetermined distance is merely exemplary and the present invention is not limited thereto.

[0066] The charging door control device 600 can be communicatively connected to the main control device 500 and electrically connected to the vehicle's charging door 100. The charging door control device 600 can be configured to open or close the charging door based on charging door control signals from the main control device. According to an embodiment of the present invention, the charging door control device 600 may include a processing unit and a drive motor, with the processing unit electrically connected to the drive motor. The motor needs to be connected to the processing unit, which is responsible for receiving and processing signals and executing corresponding control commands. The drive motor is used to drive the opening and closing of the charging door.

[0067] The UWB-based system for controlling a vehicle's charging port according to an embodiment of the present invention may further include a sound output device and an indicator device. The sound output device and the indicator device may be respectively installed near the vehicle's charging port and electrically connected to the main control device. The sound output device may be configured to issue an audible alarm based on control signals from the main control device; it may be a speaker or other type of audio output device, and its purpose is to provide auditory feedback, informing the user of changes in the charging port's status or warning of potential problems. The indicator device may be configured to illuminate an indicator light based on control signals from the main control device; it may be an LED light or other type of visual output device, and its purpose is to provide visual feedback, informing the user of the location of the charging port and the status of the charging port (e.g., charging, charging complete, malfunction, etc.).

[0068] The main control unit 500 may be further configured to generate a control signal that causes the sound output device to emit an audible alarm and / or causes the indicator device to illuminate an indicator light when a charging door control signal that causes the charging door to open or close is generated.

[0069] Therefore, the UWB-based vehicle charging door control system according to an embodiment of the present invention can automatically open the charging door when the charging device and / or user approaches the vehicle's charging door by utilizing UWB communication technology. This automatic operation without manual intervention improves the convenience of operation. Furthermore, by installing indicator lights and / or speakers near the charging port, visual and auditory guidance is provided to the user, ensuring the correctness and safety of the charging connection. In summary, the UWB-based vehicle charging door control system according to an embodiment of the present invention significantly improves the convenience and safety for users when charging their vehicles through automated operation and multi-sensory guidance.

[0070] Figure 2 A flowchart illustrating a method for controlling the charging gate of a vehicle according to an embodiment of the present invention. See also... Figure 2In step S21, the first UWB communication device of the charging device sends and receives UWB communication signals; in step S22, the vehicle-mounted UWB communication device detects the location information of the charging device based on the received UWB communication signals of the charging device; in step S23, the vehicle-mounted camera captures image information near the charging door of the vehicle; in step S24, when the vehicle is parked, the main control device generates a charging door control signal to open or close the charging door based on the location information of the charging device and the image information near the charging door of the vehicle; in step S25, the charging door control device opens or closes the charging door based on the charging door control signal of the main control device.

[0071] The following reference Figure 3 and Figure 4 The workflow of a system and method for controlling the charging gate of a vehicle based on a UWB according to an embodiment of the present invention is described with specific examples.

[0072] Figure 3 The workflow of a system and method for controlling a vehicle's charging gate based on an embodiment of the present invention is shown in the following charging scenario: after a user parks the vehicle in the charging area, a robotic arm carrying a charging device charges the vehicle.

[0073] In step S31, the main control unit determines whether the vehicle is parked. If it is determined that the vehicle is parked (i.e., "yes" in step S31), in step S32, the main control unit detects whether the location of the charging device is within a set range around the vehicle based on the location information of the charging device. Here, the main control unit can obtain the location information of the charging device via an onboard UWB communication device, compare the location information of the charging device with the set range around the vehicle, and thus determine whether the charging device is within that range.

[0074] When the location of the charging device is detected to be within the vehicle's set range (i.e., "yes" in step S32), in step S33, the main control device determines whether the distance between the charging device and the vehicle's charging gate is less than a first predetermined distance.

[0075] When it is determined that the distance between the user or charging device and the vehicle's charging door is less than a first predetermined distance (i.e., "yes" in step S33, indicating that the robotic arm carrying the charging device is approaching the vehicle's charging door), in step S34, the main control device further determines whether the charging device is approaching the vehicle's charging door based on image information near the vehicle's charging door.

[0076] When it is determined that the charging device is close to the charging door of the vehicle (i.e., "Yes" in step S34, further determining that the robotic arm carrying the charging device is close to the charging door of the vehicle), in step S35, the main control device generates a charging door control signal to open the charging door, thereby opening the charging door, and enabling the sound output device to issue a notification message and / or enabling the indicator device to illuminate the indicator light.

[0077] When the vehicle's charging port is open, in step S36, the main control unit detects whether the charging device is electrically connected to the vehicle's charging port within a predetermined time (e.g., 30 seconds).

[0078] When the charging device is electrically connected to the vehicle's charging port within a predetermined time, in step S37, the main control device determines that the charging device is charging the vehicle. When the charging device is not electrically connected to the vehicle's charging port within a predetermined time (i.e., "No" in step S36), the main control device generates a charging door control signal to close the charging door, thereby opening the charging door and triggering an alarm from the sound output device.

[0079] When the charging device is charging the vehicle (i.e., the charging door remains open), in step S38, it is detected whether the charging device and the vehicle's charging port are disconnected.

[0080] When it is detected that the charging device is disconnected from the vehicle's charging port (i.e., "Yes" in step S38), in step S39, it is determined whether the distance between the charging device and the vehicle's charging port is greater than a first predetermined distance.

[0081] When it is determined that the distance between the charging device and the vehicle's charging door is greater than a first predetermined distance (i.e., "Yes" in step S39), a charging door control signal is generated to close the charging door, thereby closing the charging door and causing the sound output device to issue an alarm and / or notification message.

[0082] When it is determined that the distance between the charging device and the vehicle's charging gate is not greater than the first predetermined distance (i.e., "No" in step S39), return to step S36.

[0083] According to an embodiment of the present invention, when a vehicle needs charging, after the driver parks the vehicle in the charging area, a robotic arm carrying a charging device automatically approaches the vehicle to charge it. Utilizing UWB communication technology, the charging door automatically opens when the robotic arm approaches the vehicle and automatically closes after charging is complete, eliminating the need for manual intervention and improving operational convenience. Furthermore, indicator lights and / or speakers installed near the charging port provide visual and auditory guidance to the driver, ensuring the correctness and safety of the charging connection.

[0084] Figure 4 The workflow of a system and method for controlling a vehicle's charging gate based on an embodiment of the present invention is shown in the following charging scenario: the driver parks the vehicle in a charging area, the driver carries the car key and / or other mobile device, gets out of the vehicle to retrieve the charging device, and thus charges the vehicle.

[0085] In step S41, the main control unit determines whether the vehicle is parked. If it is determined that the vehicle is parked (i.e., "yes" in step S41), in step S42, the main control unit detects whether the location of the charging device is within a set range around the vehicle based on the location information of the charging device.

[0086] When the location of the charging device is detected to be within the vehicle's set range (i.e., "yes" in step S42), in step S43, the main control device determines whether the distance between the driver and the charging device is less than a second predetermined distance based on the driver's location information and the location information of the charging device.

[0087] When it is determined that the distance between the driver and the charging device is less than the second predetermined distance (i.e., "yes" in step S43, indicating that the driver approaches the charging device after getting out of the vehicle), in step S44, the main control device determines whether the distance between the driver or the charging device and the vehicle's charging door is less than the first predetermined distance.

[0088] When it is determined that the distance between the driver or the charging device and the vehicle's charging door is less than a first predetermined distance (i.e., "yes" in step S44, indicating that the driver may be holding the charging device and approaching the vehicle's charging door; here, it is sufficient to determine that at least one of the driver and the charging device is less than the first predetermined distance from the vehicle's charging door), in step S45, the main control device determines whether the charging device is close to the vehicle's charging door based on image information near the vehicle's charging door.

[0089] When it is determined that the charging device is close to the charging door of the vehicle (i.e., "Yes" in step S45, further determining that the driver is holding the charging device close to the charging door of the vehicle), in step S46, the main control device generates a charging door control signal to open the charging door, thereby opening the charging door, and enabling the sound output device to issue a notification message and / or enabling the indicator device to illuminate the indicator light.

[0090] When the vehicle's charging port is open, in step S47, the main control unit detects whether the charging device is electrically connected to the vehicle's charging port within a predetermined time (e.g., 30 seconds).

[0091] When the charging device is electrically connected to the vehicle's charging port within the predetermined time, the main control unit determines that the charging device is charging the vehicle. When the charging device is not electrically connected to the vehicle's charging port within the predetermined time, the main control unit generates a charging door control signal to close the charging door, thereby opening the charging door and triggering an alarm from the audible output device.

[0092] When the charging device is charging the vehicle (i.e., the charging door remains open), in step S48, it is detected whether the charging device is disconnected from the vehicle's charging port.

[0093] When it is detected that the charging device is disconnected from the vehicle's charging port (i.e., "yes" in step 48), in step S49, it is determined whether the distance between the charging device and the vehicle's charging port is greater than a first predetermined distance.

[0094] When it is determined that the distance between the charging device and the vehicle's charging door is greater than a first predetermined distance (i.e., "Yes" in step S49), a charging door control signal is generated to close the charging door, thereby closing the charging door and causing the sound output device to issue an alarm and / or notification message.

[0095] When it is determined that the distance between the charging device and the vehicle's charging gate is not greater than the first predetermined distance (i.e., "No" in step S49), return to step S47.

[0096] According to an embodiment of the present invention, when a vehicle needs charging, in a scenario where the driver parks the vehicle in a charging area and gets out to retrieve the charging device, the charging door can automatically open when the charging device or the driver approaches the vehicle using UWB communication technology. The charging door can also automatically close after charging is detected to be complete, without manual intervention, thus improving operational convenience. Furthermore, indicator lights and / or speakers installed near the charging port provide visual and auditory guidance to the driver, thereby ensuring the correctness and safety of the charging connection.

[0097] The various embodiments of the present invention are not an exhaustive list of all possible combinations, but are intended to describe representative aspects of the invention, and the contents described in the various embodiments can be applied independently or in two or more combinations.

[0098] The description of the exemplary embodiments presented above is merely illustrative of the technical solutions of the present invention and is not intended to be exhaustive, nor is it intended to limit the invention to the precise forms described. Obviously, those skilled in the art can make many changes and variations based on the above teachings. The exemplary embodiments were chosen and described to explain the specific principles of the invention and its practical application, thereby enabling others skilled in the art to understand, implement, and utilize the various exemplary embodiments of the invention and their various alternatives and modifications. The scope of protection of the present invention is intended to be defined by the appended claims and their equivalents.

Claims

1. A system for controlling a vehicle's charging gate based on UWB, comprising: The charging gate covers the vehicle's charging port; A charging device that can be electrically connected to the charging port of a vehicle and configured to charge the vehicle, the charging device including a first UWB communication device that can send and receive UWB communication signals. An in-vehicle UWB communication device is provided, which includes a UWB processing module and multiple in-vehicle UWB communication modules. The UWB processing module and the multiple in-vehicle UWB communication modules are communicatively connected. The multiple in-vehicle UWB communication modules are configured to communicate with a first UWB communication device of the charging device and send the received UWB communication signals of the charging device to the UWB processing module. The UWB processing module detects the location information of the charging device based on the received UWB communication signals of the charging device. An onboard camera device configured to capture image information near the vehicle's charging port; The main control device is communicatively connected to the vehicle-mounted UWB communication device and the vehicle-mounted camera device, respectively. The main control device is configured to generate a charging door control signal to open or close the charging door based on the location information of the charging device and the image information near the charging door of the vehicle when the vehicle is parked. A charging door control device, which is communicatively connected to a main control device and electrically connected to the charging door of a vehicle, wherein the charging door control device is configured to open or close the charging door based on a charging door control signal from the main control device.

2. The system for controlling the charging door of a vehicle based on UWB according to claim 1, further comprising a user carrying a second UWB communication device, the second UWB communication device being capable of sending and receiving UWB communication signals; The vehicle-mounted UWB communication device is configured to communicate with the user's second UWB communication device via UWB, and to send the received UWB communication signals from the user to the UWB processing module of the vehicle-mounted UWB communication device. The UWB processing module detects the user's location information based on the received UWB communication signals from the user. The main control device is further configured to generate a charging door control signal that opens or closes the charging door based on the user's location information, the location information of the charging device, and image information near the vehicle's charging door.

3. The system for controlling the charging door of a vehicle based on UWB according to claim 1, wherein, The main control device is further configured as follows: Check if the location of the charging device is within the vehicle's preset range; When the location of the charging device is detected to be within the vehicle's set range, determine whether the distance between the charging device and the vehicle's charging gate is less than a first predetermined distance. When it is determined that the distance between the charging device and the vehicle's charging door is less than a first predetermined distance, it is determined whether the charging device is close to the vehicle's charging door based on image information near the vehicle's charging door. When it is determined that the charging device is close to the vehicle's charging door, a charging door control signal is generated to open the charging door.

4. The system for controlling the charging door of a vehicle based on UWB according to claim 2, wherein, The main control device is further configured as follows: Check if the location of the charging device is within the vehicle's preset range; When the location of the charging device is detected to be within the vehicle's set range, it is determined whether the distance between the user and the charging device is less than a second predetermined distance; When it is determined that the distance between the user and the charging device is less than the second predetermined distance, it is determined whether the distance between the user or the charging device and the vehicle's charging gate is less than the first predetermined distance. When it is determined that the distance between the user or charging device and the vehicle's charging door is less than a first predetermined distance, it is determined whether the charging device is close to the vehicle's charging door based on image information near the vehicle's charging door. When it is determined that the charging device is close to the vehicle's charging door, a charging door control signal is generated to open the charging door.

5. The system for controlling the charging door of a vehicle based on UWB according to claim 3 or 4, wherein, The vehicle's set range is a predetermined distance range between the charging device and the front, rear, left, and right sides of the vehicle; The predetermined distance is set within the range of 3m to 6m; The first predetermined distance is set within the range of 0.5m to 1.5m; The second predetermined distance is set within the range of 0.5m to 1.5m.

6. The system for controlling the charging door of a vehicle based on UWB according to claim 3 or 4, wherein, The main control device is further configured as follows: Based on image information near the vehicle's charging gate, identify whether the cutting ratios of different circles in the image are the same; When different circles in the image are identified to have the same cutting ratio, the charging device is determined to be close to the charging gate of the vehicle.

7. The system for controlling the charging door of a vehicle based on UWB according to claim 3 or 4, wherein, The main control device is further configured as follows: With the vehicle's charging door open, detect whether the charging device is electrically connected to the vehicle's charging port within a predetermined time. When it is detected that the charging device is electrically connected to the vehicle's charging port within a predetermined time, it is determined that the charging device is charging the vehicle. When the charging device is charging the vehicle, check whether the charging device and the vehicle's charging port are disconnected. When it is detected that the charging device is disconnected from the vehicle's charging port, determine whether the distance between the charging device and the vehicle's charging port is greater than a first predetermined distance. When it is determined that the distance between the charging device and the vehicle's charging door is greater than a first predetermined distance, a charging door control signal is generated to close the charging door. The predetermined time is set within the range of 20s to 40s.

8. The system for controlling the charging door of a vehicle based on UWB according to claim 7, wherein, The main control device is further configured as follows: When the vehicle's charging door is open, if the charging device is not electrically connected to the vehicle's charging port for a predetermined period of time, a charging door control signal is generated to close the charging door.

9. The system for controlling the charging door of a vehicle based on UWB according to claim 1, further comprising: A sound output device electrically connected to the main control device and configured to emit a sound alarm based on control signals from the main control device; An indicator device, which is electrically connected to the main control device, and configured to illuminate the indicator light based on the control signal from the main control device; The main control device is further configured to generate a control signal that causes the sound output device to emit a sound alarm and / or causes the indicator device to illuminate an indicator light when a charging door control signal is generated to open or close the charging door.

10. The system for controlling the charging door of a vehicle based on UWB according to claim 1 or 2, wherein, The ability to connect communicatively includes connecting via wired communication; The wired communication methods include controller area network, universal serial bus, high-definition multimedia interface and digital video interface.

11. A method for controlling the charging gate of a vehicle based on UWB, comprising: The first UWB communication device of the charging device sends and receives UWB communication signals; The vehicle-mounted UWB communication device detects the location information of the charging device based on the received UWB communication signals from the charging device. Image information near the vehicle's charging port is captured by an onboard camera. When the vehicle is parked, the main control unit generates a charging door control signal to open or close the charging door based on the location information of the charging device and the image information near the charging door of the vehicle. The charging door is opened or closed by the charging door control device based on the charging door control signal from the main control device.

12. The method for controlling the charging gate of a vehicle based on UWB according to claim 11, further comprising: The user-carried second UWB communication device sends and receives UWB communication signals; The vehicle-mounted UWB communication device detects the user's location information based on the received UWB communication signals from the user; The main control unit generates a charging door control signal to open or close the charging door based on the user's location information, the charging device's location information, and image information near the vehicle's charging door.

13. The method for controlling the charging gate of a vehicle based on UWB according to claim 11, further comprising: Check if the location of the charging device is within the vehicle's preset range; When the location of the charging device is detected to be within the vehicle's set range, determine whether the distance between the charging device and the vehicle's charging gate is less than a first predetermined distance. When it is determined that the distance between the charging device and the vehicle's charging door is less than a first predetermined distance, it is determined whether the charging device is close to the vehicle's charging door based on image information near the vehicle's charging door. When it is determined that the charging device is close to the vehicle's charging door, a charging door control signal is generated to open the charging door.

14. The method for controlling the charging gate of a vehicle based on UWB according to claim 12, further comprising: Check if the location of the charging device is within the vehicle's preset range; When the location of the charging device is detected to be within the vehicle's set range, it is determined whether the distance between the user and the charging device is less than a second predetermined distance; When it is determined that the distance between the user and the charging device is less than the second predetermined distance, it is determined whether the distance between the user or the charging device and the vehicle's charging gate is less than the first predetermined distance. When it is determined that the distance between the user or charging device and the vehicle's charging door is less than a first predetermined distance, it is determined whether the charging device is close to the vehicle's charging door based on image information near the vehicle's charging door. When it is determined that the charging device is close to the vehicle's charging door, a charging door control signal is generated to open the charging door.

15. The method for controlling the charging gate of a vehicle based on UWB according to claim 13 or 14, wherein, The vehicle's set range is a predetermined distance range between the charging device and the front, rear, left, and right sides of the vehicle; The predetermined distance is set within the range of 3m to 6m; The first predetermined distance is set within the range of 0.5m to 1.5m; The second predetermined distance is set within the range of 0.5m to 1.5m.

16. The method for controlling the charging gate of a vehicle based on UWB according to claim 13 or 14, further comprising: Based on image information near the vehicle's charging gate, identify whether the cutting ratios of different circles in the image are the same; When different circles in the image are identified to have the same cutting ratio, the charging device is determined to be close to the charging gate of the vehicle.

17. The method for controlling the charging gate of a vehicle based on UWB according to claim 13 or 14, further comprising: With the vehicle's charging door open, detect whether the charging device is electrically connected to the vehicle's charging port within a predetermined time. When it is detected that the charging device is electrically connected to the vehicle's charging port within a predetermined time, it is determined that the charging device is charging the vehicle. When the charging device is charging the vehicle, check whether the charging device and the vehicle's charging port are disconnected. When it is detected that the charging device is disconnected from the vehicle's charging port, determine whether the distance between the charging device and the vehicle's charging port is greater than a first predetermined distance. When it is determined that the distance between the charging device and the vehicle's charging door is greater than a first predetermined distance, a charging door control signal is generated to close the charging door. The predetermined time is set within the range of 20s to 40s.

18. The method for controlling the charging gate of a vehicle based on UWB according to claim 17, further comprising: When the vehicle's charging door is open, if the charging device is not electrically connected to the vehicle's charging port for a predetermined period of time, a charging door control signal is generated to close the charging door.

19. The method for controlling the charging gate of a vehicle based on UWB according to claim 11, further comprising: When a charging door control signal is generated to open or close the charging door, the main control device generates a control signal to make the sound output device emit an audible alarm and / or to make the indicator device light up an indicator light.

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