Vehicle wireless charging control method, device, program product and medium

Abstract

The application discloses a vehicle wireless charging control method, device, program product and medium. The method comprises the following steps: receiving a first image of a wireless charging area collected by an image collection device before wireless charging, wherein the image collection device is arranged on a vehicle to be charged; if the result of foreign matter detection on the first image is that there is no foreign matter, controlling a wireless charging device to charge the vehicle to be charged, and receiving a second image of the wireless charging area collected by the image collection device in a charging process in real time; if the result of living matter detection on the second image is that there is living matter, detecting the distance between the living matter and the vehicle to be charged; and controlling the charging power of the wireless charging device for the vehicle to be charged according to the distance between the living matter and the vehicle to be charged. The technical scheme provided by the application realizes dynamic adjustment of the wireless charging power, and the flexible power adjustment mechanism further improves the safety of the charging process.

Description

Technical Field

[0001] This application belongs to the field of wireless charging control for electric vehicles, and particularly relates to a wireless charging control method, device, program product and medium for vehicles. Background Technology

[0002] Conventional charging methods suffer from low space utilization, require getting in and out of the vehicle to access the charging port, are prone to leakage in humid environments, and pose a risk of electric shock in rain, snow, and thunderstorms. Wireless charging, on the other hand, improves space utilization, operates automatically, and allows for immediate charging upon stopping. Its underground design avoids direct contact with cables and is more adaptable to inclement weather. Therefore, wireless charging technology for electric vehicles is of significant research importance.

[0003] Wireless charging primarily transmits energy through a magnetic field generated by high-frequency alternating current, which is then magnetically coupled to the receiver. However, scientific research indicates that high-frequency magnetic fields can be harmful to the human body. Prolonged exposure to the high-frequency magnetic field generated by a wireless charging device for electric vehicles may cause adverse reactions such as nausea, vomiting, and dizziness. Furthermore, the presence of living organisms can negatively impact the normal operation of the wireless charging device. Additionally, the magnetic field generated by wireless charging may cause metallic foreign objects within the field to heat up, potentially damaging the charging device. Therefore, monitoring of living organisms and detecting foreign objects are of significant importance.

[0004] However, the stability and reliability of the live object monitoring and foreign object detection schemes in related technologies are not high, and they cannot flexibly control wireless charging based on the results of live object monitoring. Summary of the Invention

[0005] In view of the above problems, this application is made to provide a vehicle wireless charging control method, apparatus, program product and medium that solves or at least partially solves the above problems.

[0006] Other features and advantages of this application will become apparent from the following detailed description, or may be learned in part from practice of this application.

[0007] According to a first aspect of the embodiments of this application, a wireless charging control method for a vehicle is provided. The method includes: receiving a first image of a wireless charging area acquired before wireless charging, transmitted by an image acquisition device, wherein the image acquisition device is disposed on the vehicle to be charged; if the result of foreign object detection on the first image is that no foreign object is found, controlling the wireless charging device to charge the vehicle to be charged, and receiving a second image of the wireless charging area acquired during the charging process, transmitted by the image acquisition device in real time; if the result of live object detection on the second image is that a live object is found, detecting the distance between the live object and the vehicle to be charged; and controlling the charging power of the wireless charging device for wireless charging the vehicle to be charged based on the distance between the live object and the vehicle to be charged.

[0008] In some embodiments of this application, based on the aforementioned scheme, controlling the charging power of the wireless charging device for wireless charging the vehicle to be charged according to the distance between the living creature and the vehicle to be charged includes: if the distance between the living creature and the vehicle to be charged is less than or equal to a preset safe distance, then controlling the charging power of the wireless charging device for wireless charging the vehicle to be charged to be zero, and generating a first alarm message for notification; if the distance between the living creature and the vehicle to be charged is greater than the preset safe distance, then adjusting the charging power of the wireless charging device for wireless charging the vehicle to be charged according to the distance between the living creature and the vehicle to be charged, to obtain an adjusted charging power, so as to use the adjusted charging power for wireless charging.

[0009] In some embodiments of this application, based on the aforementioned scheme, adjusting the charging power of the wireless charging device for wirelessly charging the vehicle to be charged according to the distance between the living creature and the vehicle to be charged, to obtain the adjusted charging power, includes: obtaining the initial charging power of the wireless charging device for wirelessly charging the vehicle to be charged; and calculating the adjusted charging power based on the initial charging power, the preset safety distance, and the distance between the living creature and the vehicle to be charged.

[0010] In some embodiments of this application, based on the foregoing scheme, the adjusted charging power P is calculated using the following formula, according to the initial charging power, the preset safety distance, and the distance between the living object and the vehicle to be charged:

[0011]

[0012] Where P0 is the initial charging power, d min The preset safety distance is d, where d is the distance between the living creature and the vehicle to be charged.

[0013] In some embodiments of this application, based on the aforementioned scheme, detecting the distance between the living creature and the vehicle to be charged includes: recognizing the second image to determine the image distance between the living creature and the vehicle to be charged in the second image; and determining the distance between the living creature and the vehicle to be charged based on the image distance and relevant parameters of the image acquisition device.

[0014] In some embodiments of this application, based on the foregoing scheme, the method further includes: if the result of foreign object detection on the first image is that a foreign object is present, then controlling the wireless charging device to prevent the charging of the vehicle to be charged, and generating a second warning message and providing a prompt.

[0015] In some embodiments of this application, based on the foregoing scheme, the method further includes: if the result of liveness detection on the second image is that no live object exists, then controlling the wireless charging device to continue charging the vehicle to be charged.

[0016] According to a second aspect of the embodiments of this application, a vehicle wireless charging control device is provided. The device includes: a first receiving unit configured to receive a first image of a wireless charging area acquired before wireless charging, transmitted by an image acquisition device disposed on a vehicle to be charged; a second receiving unit configured to control the wireless charging device to charge the vehicle to be charged if the result of foreign object detection on the first image is that no foreign object is found, and to receive in real time a second image of the wireless charging area acquired during the charging process transmitted by the image acquisition device; a detection unit configured to detect the distance between the live object and the vehicle to be charged if the result of live object detection on the second image is that a live object is found; and a control unit configured to control the charging power of the wireless charging device for wireless charging the vehicle to be charged based on the distance between the live object and the vehicle to be charged.

[0017] According to a third aspect of the present application, a computer program product is provided, the computer program product including computer instructions stored in a computer-readable storage medium and adapted to be read and executed by a processor to cause a computer device having the processor to perform the method as described in any of the embodiments of the first aspect above.

[0018] According to a fourth aspect of the present application, a computer-readable storage medium is provided, wherein at least one computer program instruction is stored therein, the at least one computer program instruction being loaded and executed by a processor to perform the operation as described in any of the embodiments of the first aspect above.

[0019] Based on the technical solution proposed in this application, an image acquisition device installed on the vehicle to be charged acquires a first image before wireless charging. The first image is used to detect the presence of foreign objects within the wireless charging area. If no foreign objects are present, the vehicle is charged. Simultaneously, the image acquisition device acquires a second image in real time during the wireless charging process. This second image is used to monitor for the presence of living objects within the wireless charging area. If living objects are present, the charging power of the wireless charging device is controlled based on the distance between the detected living object and the vehicle. On one hand, the foreign object detection and living object monitoring in this application are achieved through image acquisition and detection by an image acquisition device installed on the vehicle. Compared to related technologies that incorporate detection devices and circuits within the wireless charging device, this reduces the cost and size of the wireless charging device. On the other hand, during wireless charging, the power is dynamically adjusted based on the distance between the living object and the vehicle, further enhancing the safety of the charging process.

[0020] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings:

[0022] Figure 1 This paper illustrates a system architecture diagram of an application of a wireless charging control method for multiple vehicles according to an embodiment of this application.

[0023] Figure 2 A flowchart of a vehicle wireless charging control method according to an embodiment of this application is shown;

[0024] Figure 3 A flowchart of a vehicle wireless charging control method according to an embodiment of this application is shown;

[0025] Figure 4 A flowchart of a vehicle wireless charging control method according to an embodiment of this application is shown;

[0026] Figure 5 A flowchart of a vehicle wireless charging control method according to an embodiment of this application is shown;

[0027] Figure 6 A block diagram of a vehicle wireless charging control device according to an embodiment of this application is shown;

[0028] Figure 7 A schematic diagram of the structure of a computer system suitable for implementing the electronic device of the present application is shown. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0030] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0031] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0032] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0033] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "multiple" means two or more.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing embodiments of the invention only and is not intended to limit the invention.

[0035] To enable those skilled in the art to better understand this application, the application scenarios involved in this application will be briefly described first.

[0036] like Figure 1 The diagram illustrates an application scenario of a vehicle wireless charging control method provided in this embodiment. To support an exemplary application, the wireless charging system may include at least: a vehicle 100 and a wireless charging device 200.

[0037] Vehicle 100 may include a receiver 101 for a wireless charging system, and wireless charging device 200 may include a transmitter 201 and a charging station 202. The wireless charging system charges vehicle 100 through the joint operation of the receiver 101, transmitter 201, and charging station 202 to perform contactless wireless charging. Charging vehicle 100 may involve charging the battery pack 102 of vehicle 100.

[0038] The wireless charging device 200 can be a fixed wireless charging station, a fixed wireless charging parking space, or a wireless charging street light. The transmitter 201 of the wireless charging device 200 can be installed on the ground or buried underground. For example, Figure 1 The transmitter 201 is positioned above the ground. The transmitter 201 can wirelessly charge the vehicle 100 located above it. The receiver 101 of the vehicle 100 can be integrated into the bottom of the vehicle 100, so that the vehicle 100 can be charged wirelessly when it enters the wireless charging range of the transmitter 201.

[0039] The power transmission coil and inverter circuit of the transmitting device 201 can be integrated together or separated; this application does not specifically limit this. For example, Figure 1 The transmitter 201 shown is an integrated power transmitting coil and inverter circuit. The power transmitting coil of the transmitter 201 is connected to the charging station 202, which is equipped with a power supply. The power supply can be AC ​​to reduce the complexity of the circuit structure, or DC to reduce costs. When the power supply is DC, the inverter circuit converts the DC power generated by the power supply into high-frequency AC power.

[0040] The power receiving coil and rectifier circuit of the receiving device 101 can be integrated together or separated; this application embodiment does not specifically limit this. When the power receiving coil and rectifier circuit are separated, the rectifier circuit can typically be located within the vehicle 100. For example, Figure 1 The receiver 101 shown is a combination of a power receiving coil and a rectifier module. The power receiving coil is coupled to the power transmitting coil and can receive energy through the alternating magnetic field generated by the power transmitting coil, generating an induced current or voltage. The rectifier circuit can convert the induced current or voltage generated by the power receiving coil into a direct current or voltage to charge the battery pack 100 of the vehicle 100.

[0041] Non-contact charging can be achieved by wireless energy transfer between the receiving device 101 and the transmitting device 201 through electric or magnetic field coupling. Specifically, it can be achieved through electric field induction, magnetic induction, magnetic resonance, or wireless radiation. This invention does not impose any specific limitations on this method. Furthermore, in some application scenarios, the vehicle 100 and the wireless charging device 200 can also perform bidirectional charging, that is, the wireless charging device 200 can charge the vehicle 100, and the vehicle 100 can also discharge to the wireless charging device 200.

[0042] Understandably, to improve the safety and efficiency of wireless charging, a wireless charging system can also include a detection module for detecting living and foreign objects. This detection module can be located on either the charging side or the receiving side. However, adding a detection module to the wireless charging device 200 would make the device bulky and increase the cost, hindering its widespread adoption. Therefore, as... Figure 1 As shown, in this embodiment, the detection module is located on the power receiving side. Besides the receiving device 101 and battery pack 102, the vehicle 100 can also have a detection module. Specifically, the detection module may include an image acquisition device 103 and a data processing module 104. The image acquisition device 103 can be, for example, a high-definition camera. The vehicle 100 is equipped with an image acquisition device 103, which is used to capture images near the wireless charging location. The image acquisition device 103 is connected to the data processing module 104. The data processing module 104 receives the image information and analyzes and processes the received image information according to a preset algorithm to determine whether there are living objects or metallic foreign objects. The preset algorithm can be adjusted and optimized according to actual needs.

[0043] In some embodiments, a sound-emitting device 105 may also be installed on the vehicle 100, such as a buzzer, to alert people in the vicinity to stay away from the wireless charging device 200.

[0044] The following describes the vehicle wireless charging control method provided by the exemplary embodiments of this application in conjunction with the application scenarios described above and with reference to the accompanying drawings. It should be noted that the above application scenarios are only shown to facilitate understanding of the spirit and principles of this application, and the embodiments of this application are not limited in any way in this respect.

[0045] Figure 2 This is a flowchart illustrating a vehicle wireless charging control method according to an embodiment of this application. This vehicle wireless charging control method is applied to a wireless charging system, which can be as follows: Figure 1 The described wireless charging system, such as Figure 2 As shown, the vehicle wireless charging control method includes the following steps:

[0046] Step S210: Receive the first image of the wireless charging area captured before wireless charging by the image acquisition device, which is set on the vehicle to be charged.

[0047] Step S220: If the result of foreign object detection on the first image is that there is no foreign object, then control the wireless charging device to charge the vehicle to be charged, and receive the second image of the wireless charging area collected during the charging process sent by the image acquisition device in real time.

[0048] Step S230: If the result of liveness detection on the second image is that a live object exists, then detect the distance between the live object and the vehicle to be charged.

[0049] Step S240: Based on the distance between the living object and the vehicle to be charged, control the charging power of the wireless charging device to wirelessly charge the vehicle to be charged.

[0050] These steps are explained in detail below.

[0051] Step S210: Receive the first image of the wireless charging area captured before wireless charging by the image acquisition device, which is installed on the vehicle to be charged.

[0052] The vehicle to be charged can be any vehicle containing a device capable of storing electrical energy. An image acquisition device, such as a camera, is installed on the vehicle. This device uses sensors to collect light signals and converts them into digital signals to create an image, such as an RGB (Red, Green, Blue) color image or an infrared image, depending on the camera used. This image acquisition device monitors the wireless charging area in real time. It typically features high sensitivity and resistance to strong light. By installing the device on the vehicle, it is made vibration-resistant and has a wide field of view, usually covering the entire wireless charging area. Once a vehicle is detected entering the wireless charging area, the image acquisition device transmits a first image of the area, including the vehicle, to the data processing module for processing before wireless charging begins.

[0053] The data processing module is connected to the image acquisition device. The data processing module receives the first image and analyzes and processes the received first image according to a preset algorithm, including detecting whether there are foreign objects in the wireless charging area.

[0054] It is understood that the number of image acquisition devices can be one or more, preferably multiple, to ensure comprehensive coverage of the acquired image information. Multiple image acquisition devices can be arranged in an array on the vehicle to be charged, with the acquisition areas of each device corresponding to the upper, lower, left, right, center, upper left, upper right, lower left, and lower right areas of the wireless charging area. The number of first images can be multiple; that is, multiple first images can be captured to more accurately indicate the image information of the wireless charging area. For example, images of the wireless charging area can be acquired from different angles to obtain multiple first images.

[0055] As an example, the first image can be a black and white image or a color image. Exemplarily, the first image can be an image of any size or resolution. Alternatively, the first image can also be an image that meets a preset resolution requirement. For example, the first image can be a black and white image with a resolution of at least 5472*3648. Alternatively, the first image can be a black and white image with a resolution of at least 912*912. The requirements for the first image can be set based on actual needs, the hardware requirements of the image acquisition device, etc.

[0056] As another example, the first image can be either the raw image directly acquired by the image acquisition device or an image after preprocessing. This preprocessing can include any operation aimed at improving the visual effect of the image, enhancing its clarity, or highlighting certain features to facilitate foreign object detection. For example, preprocessing can include noise reduction operations such as filtering, or adjustments to image parameters such as grayscale, contrast, and brightness.

[0057] In some embodiments of this application, the first image may be a static detection image, such as a photograph that has already been taken, or it may be a frame of a dynamic detection image, such as a frame of a video.

[0058] Step S220: If the result of foreign object detection on the first image is that there is no foreign object, then control the wireless charging device to charge the vehicle to be charged, and receive the second image of the wireless charging area collected during the charging process from the image acquisition device in real time.

[0059] In wireless charging systems, foreign objects such as metal objects or living organisms (e.g., birds, or living people) may enter between the receiver and transmitter. When a metal object is present between the transmitter and receiver, it will heat up due to the eddy current effect, potentially leading to spontaneous combustion (e.g., aluminum foil spontaneously combusting when heated to a certain temperature) or the burning of other items (e.g., leaves or paper on the heated metal igniting). If a living organism is present between the transmitter and receiver, the high-frequency alternating magnetic field between them can harm its health. Furthermore, the presence of foreign objects or living organisms can also affect charging efficiency. Therefore, foreign object detection and biological object monitoring are crucial for wireless charging.

[0060] In this embodiment, the data processing module receives a first image before wireless charging and then analyzes and processes the first image to detect whether there are foreign objects in the wireless charging area. It should be noted that performing foreign object detection before wireless charging, rather than during the charging process, can eliminate the risk of foreign objects being present earlier, improving charging safety.

[0061] Specifically, analyzing and processing the first image may include analyzing the first image using a preset foreign object detection algorithm (such as edge detection, shape recognition, etc.) to detect whether there are metallic foreign objects or other foreign objects that may cause safety hazards.

[0062] The following uses an edge detection algorithm as an example to illustrate the analysis and processing of the first image. The edges of the first image can be locations where the brightness of a certain number of pixels changes, or collections of pixels where the grayscale level changes drastically. Edge detection of the first image can remove irrelevant information, such as solid-color areas like the ground, while extracting useful structural information, such as texture features, thus obtaining the edge image and significantly reducing the amount of data to be processed.

[0063] In this embodiment, the edges of the first image can be determined by a threshold. The lower the threshold, the more edges of the first image can be detected, making it easier to pick out irrelevant information from the first image. The higher the threshold, the more thin or short line segments in the first image may be missed.

[0064] Optionally, the high threshold in this embodiment can distinguish the foreign object contour to be extracted from the background in the first image. For example, if the gradient intensity of a pixel is greater than the high threshold, then the pixel is an edge point of the first image, and the boundary formed by pixels with gradient intensities greater than the high threshold is a strong boundary of the first image. The low threshold can be used to smooth the contour lines of edges or connect discontinuous parts. If the gradient intensity of a pixel is less than the low threshold, then the pixel is not an edge point of the first image. For pixels with gradient intensities between the low and high thresholds, if there are pixels in the neighborhood of the pixel with gradient intensities exceeding the high threshold, then the pixel is determined as an edge point, and the boundary formed by pixels with gradient intensities between the low and high thresholds is a weak boundary of the first image, where the gradient intensity is the magnitude of the pixel position.

[0065] For example, this embodiment uses the Canny edge detection method to perform edge detection on the first image to determine whether foreign objects exist. Optionally, a low threshold of 20 and a high threshold of 40 are selected to retain the texture features of the first image and remove information without texture features.

[0066] It should be noted that the Canny edge detection method for the first image described above is only one example of the embodiments of the present invention, and does not mean that the method for edge detection of the first image in the embodiments of the present invention is only the above method. Any method that can perform edge detection on the first image is within the scope of the embodiments of the present invention, such as Roberts edge detection, Sobel edge detection, Prewitt edge detection, LOG edge detection, etc., which will not be described in detail here.

[0067] In this embodiment, if the result of foreign object detection on the first image is that no foreign object is found, the data processing module can control the wireless charging device to charge the vehicle to be charged. During the charging process, the image acquisition device can acquire a second image of the wireless charging area in real time, and the data processing module can receive the second image of the wireless charging area acquired during the charging process sent by the image acquisition device in real time to monitor whether there are living things in the wireless charging area.

[0068] In some embodiments, if the foreign object detection result of the first image indicates the presence of a foreign object, the data processing module can control the wireless charging device to prevent the charging of the vehicle to be charged from starting. Simultaneously, the data processing module can also generate an alarm message and provide a voice prompt via a sound device (e.g., a buzzer) on the vehicle to be charged. In other embodiments, in addition to voice prompts, a warning light on the vehicle to be charged can also be used to provide a warning.

[0069] As an example, there can be multiple second images, that is, multiple second images can be taken to more accurately indicate the image information of the wireless charging area. For example, images of the wireless charging area can be captured from different angles to obtain multiple second images.

[0070] As another example, the second image can be a black and white image or a color image. Exemplarily, the second image can be an image of any size or resolution. Alternatively, the second image can also be an image that meets a preset resolution requirement. For example, the second image can be a black and white image with a resolution of at least 5472*3648. Alternatively, the second image can be a black and white image with a resolution of at least 912*912. The requirements for the second image can be set based on actual needs, the hardware requirements of the image acquisition device, etc.

[0071] As another example, the second image can be either the original image directly acquired by the image acquisition device or an image after preprocessing. This preprocessing can include any operation aimed at improving the visual effect of the image, increasing its clarity, or highlighting certain features to facilitate liveness detection. For example, preprocessing can include noise reduction operations such as filtering, or adjustments to image parameters such as grayscale, contrast, and brightness.

[0072] Step S230: If the result of liveness detection on the second image is that a live object exists, then detect the distance between the live object and the vehicle to be charged.

[0073] In this embodiment, the data processing module receives the second image in real time during wireless charging and performs liveness detection on the second image to ensure safety during the wireless charging process. "Liveness" can be broadly interpreted to include any human or animal exhibiting life characteristics.

[0074] Specifically, the method for detecting liveness in the second image may include preprocessing the second image, such as scaling, cropping, rotating, and adjusting image parameters, and then further using a detection model to extract features from the second image to obtain a feature map of the second image.

[0075] In one possible implementation, the detection model includes a convolutional layer that is used to extract features from the second image to obtain a feature map of the second image.

[0076] Optionally, the features of the second image may be surface features of the second image, including but not limited to at least one of the image's color features, texture features, shape features, and spatial relationship features.

[0077] Color features are global features used to describe the surface properties of an image or a region within an image. Texture features are also global features used to describe the surface characteristics of an image or a region within an image (such as an object). Shape features have two representation methods: contour features and region features. Image contour features mainly target the outer boundaries of target objects in the image, while image region features relate to the entire shape region. Spatial relationship features refer to the spatial position or relative orientation relationships between multiple targets segmented in an image. Spatial relationships can include, but are not limited to, connectivity, adjacency, overlap, containment, and containment relationships.

[0078] After feature extraction, feature matching is further performed. Taking a living person as an example, after extracting facial features from the second image, it is determined whether the facial features match the standard facial feature models in the model library. If they match, it is determined that a living person exists within the wireless charging area. Similarly, taking an animal as an example, after extracting contour features from the second image, it is determined whether the contour features match the standard contour feature patterns in the model library. If they match, it is determined that an animal exists within the wireless charging area.

[0079] In this embodiment, if the result of liveness detection on the second image is that a live object is present, the data processing module can further detect the distance between the live object and the vehicle to be charged. This is mainly because the presence of a live object has a certain relationship with the distance between the live object and the vehicle to be charged. Therefore, in order to better ensure the safety of wireless charging and achieve a balance between the timeliness of wireless charging, the distance between the live object and the vehicle to be charged can be further detected when a live object is present.

[0080] In other embodiments, if the result of liveness detection on the second image is that no live objects are found, it indicates that wireless charging is safe, and the data processing module can control the wireless charging device to continue charging the vehicle to be charged.

[0081] Step S240: Based on the distance between the living object and the vehicle to be charged, control the charging power of the wireless charging device to wirelessly charge the vehicle to be charged.

[0082] If a living object is present within the wireless charging area during wireless charging, the charging power of the wireless charging device can be controlled based on the distance between the living object and the vehicle being charged. Specifically, when the living object is far away, its impact on wireless charging is minimal, thus maintaining a higher charging power; while as the living object approaches, the charging power can be automatically reduced to minimize potential impact on the living object. This flexible power adjustment mechanism improves the safety of the charging process.

[0083] The technical solution of this application embodiment acquires a first image before wireless charging using an image acquisition device installed on the vehicle to be charged. The first image is used to detect the presence of foreign objects within the wireless charging area. If no foreign objects are present, charging begins. Simultaneously, the image acquisition device acquires a second image in real time during the wireless charging process. This second image is used to monitor for the presence of living objects within the wireless charging area. If living objects are present, the charging power of the wireless charging device is controlled based on the distance between the detected living object and the vehicle to be charged. On one hand, the foreign object detection and living object monitoring in this application's technical solution are accomplished through image acquisition and detection using an image acquisition device installed on the vehicle to be charged. Compared to related technologies that incorporate detection devices and circuits within the wireless charging device, this reduces the cost and size of the wireless charging device. On the other hand, during wireless charging, the power is dynamically adjusted based on the distance between the living object and the vehicle, further enhancing the safety of the charging process.

[0084] In one embodiment of this application, such as Figure 3 As shown, controlling the charging power of the wireless charging device to wirelessly charge the vehicle based on the distance between the living object and the vehicle to be charged can specifically include steps S310-S320, which are detailed below:

[0085] Step S310: If the distance between the living creature and the vehicle to be charged is less than or equal to the preset safe distance, the wireless charging device is controlled to wirelessly charge the vehicle to be charged with zero power, and a first alarm message is generated to prompt the user.

[0086] The preset safety distance refers to the safety distance that is set in advance. The preset safety distance can be set according to specific circumstances. For example, if the preset safety distance is 1m, it can be understood that if the distance between the living creature and the vehicle to be charged is within the preset safety distance range, it means that wireless charging is unsafe. If the distance between the living creature and the vehicle to be charged is outside the preset safety distance range, it means that wireless charging is relatively safe.

[0087] Since wireless charging is unsafe when the distance between the living object and the vehicle being charged is within a preset safe distance (i.e., when the distance is less than or equal to the preset safe distance), the wireless charging device can be controlled to reduce the charging power of the vehicle to zero, thus stopping charging and generating an alarm message. The alarm can be triggered by a voice prompt from a device on the vehicle (e.g., a buzzer). In other embodiments, besides voice prompts, the alarm light on the vehicle can also flash.

[0088] Step S320: If the distance between the living creature and the vehicle to be charged is greater than the preset safe distance, then adjust the charging power of the wireless charging device to wirelessly charge the vehicle to be charged according to the distance between the living creature and the vehicle to be charged, and obtain the adjusted charging power to use for wireless charging.

[0089] Since wireless charging is relatively safe when the distance between the living object and the vehicle being charged is outside the preset safe distance (i.e., the distance is greater than the preset safe distance), the charging power of the wireless charging device can be flexibly adjusted according to the distance to obtain the adjusted charging power for wireless charging. Specifically, the adjustment method can be that the distance and the charging power are inversely proportional; the farther the distance, the higher the charging power can be, and the closer the distance, the lower the charging power can be.

[0090] In this embodiment, a preset safe distance is set, and the distance between the living object and the vehicle to be charged is compared with the preset safe distance. Different processing is performed according to the comparison result. Instead of adjusting the charging power according to the distance between the living object and the vehicle to be charged in all cases, charging is stopped directly when the distance is less than or equal to the preset safe distance, which greatly improves the safety of wireless charging. The wireless charging power is only adjusted when the distance is greater than the preset safe distance, which takes into account both the flexibility of charging power adjustment and the safety of charging.

[0091] In one embodiment of this application, such as Figure 4 As shown, the charging power of the wireless charging device for wirelessly charging the vehicle is adjusted according to the distance between the living object and the vehicle to be charged, resulting in the adjusted charging power. This can be specifically achieved through steps S410-S420, as detailed below:

[0092] Step S410: Obtain the initial charging power of the wireless charging device for wirelessly charging the vehicle to be charged.

[0093] Step S420: Calculate the adjusted charging power based on the initial charging power, the preset safety distance, and the distance between the living object and the vehicle to be charged.

[0094] In this embodiment of the application, the initial charging power refers to the charging power before adjustment. This charging power is known. After obtaining the initial charging power of the wireless charging device for wirelessly charging the vehicle to be charged, the adjusted charging power can be calculated based on the initial charging power, the preset safety distance, and the distance between the living object and the vehicle to be charged.

[0095] In some embodiments, calculating the adjusted charging power based on the initial charging power, a preset safety distance, and the distance between the living object and the vehicle to be charged can be achieved by calculating the difference between the distance between the living object and the vehicle to be charged and the preset safety distance, and the sum of the distance between the living object and the vehicle to be charged and the preset safety distance; then calculating the ratio between the difference and the sum; and finally multiplying the ratio by the initial charging power as the adjusted charging power. For example, if the initial charging power is P... 初 If the preset safe distance is 1m, then when the distance between the living object and the vehicle to be charged is 2m, the adjusted charging power is P. 初 / 3, when the distance between the living object and the vehicle to be charged is 3m, the adjusted charging power is P 初 / 2.

[0096] In some embodiments, the adjusted charging power can also be calculated based on the initial charging power, a preset safety distance, and the distance between the living object and the vehicle to be charged, using the following formula:

[0097]

[0098] Where P0 is the initial charging power, d min The preset safety distance is d, where d is the distance between the living creature and the vehicle to be charged.

[0099] In one embodiment of this application, such as Figure 5 As shown, detecting the distance between a living object and the vehicle to be charged may specifically include steps S510-S520, which are explained below:

[0100] Step S510: Identify the second image to determine the image distance between the living object in the second image and the vehicle to be charged.

[0101] In this step, the second image is first identified to determine the image distance between the living object and the vehicle to be charged. Specifically, the data processing module can use a target detection network to determine the detection boxes corresponding to the living object and the vehicle to be charged in the second image. The target detection network can be a YOLO detection network or a convolutional neural network, which is not limited to this. After determining the corresponding detection boxes, the pixel distance between the living object and the vehicle to be charged is determined based on the pixel positions of the pixels in the detection boxes, which is also the image distance between the living object and the vehicle to be charged. It is understood that the detection box corresponding to the living object usually has multiple pixels, and the detection box corresponding to the vehicle to be charged usually also has multiple pixels. In some embodiments, when determining the pixel distance, the pixel corresponding to the center position of the two detection boxes can be selected. For example, the pixel position coordinates of the pixel corresponding to the center position of the detection box corresponding to the living object are (x, y), and the pixel position coordinates of the pixel corresponding to the center position of the detection box corresponding to the vehicle to be charged are (xd, y). Then, the pixel distance between the living object and the vehicle to be charged can be obtained from the two pixel positions as d, which is also the image distance between the living object and the vehicle to be charged in the second image as d. In other embodiments, pixels at other locations within the detection frame can be selected, such as the positions of the four corner points. In other embodiments, multiple pixel distances can be calculated based on all pixels, and then the average of these multiple pixel distances can be calculated as the image distance between the living object and the vehicle to be charged.

[0102] Step S520: Determine the distance between the living creature and the vehicle to be charged based on the image distance and relevant parameters of the image acquisition device.

[0103] The relevant parameters of the image acquisition device can refer to its shooting parameters, which may include, but are not limited to, focal length, and may also include pixels, aperture value, shutter speed, ISO, and exposure. Based on the image distance and the relevant parameters of the image acquisition device, the distance between the living object and the vehicle to be charged can be determined. For example, the distance between the living object and the vehicle to be charged can be obtained by calculating the product of the image distance and the focal length.

[0104] The following describes an embodiment of the apparatus described in this application, which can be used to execute the vehicle wireless charging control method described in the above embodiments of this application. For details not disclosed in the apparatus embodiments of this application, please refer to the embodiments of the vehicle wireless charging control method described above.

[0105] See Figure 6 The diagram shows a block diagram of a vehicle wireless charging control device according to an embodiment of this application.

[0106] like Figure 6As shown, a vehicle wireless charging control device 600 according to an embodiment of this application includes: a first receiving unit 601, a second receiving unit 602, a detection unit 603, and a control unit 604.

[0107] The system includes a first receiving unit 601 configured to receive a first image of the wireless charging area captured by an image acquisition device before wireless charging, the image acquisition device being mounted on the vehicle to be charged; a second receiving unit 602 configured to control the wireless charging device to charge the vehicle to be charged if the result of foreign object detection on the first image is that no foreign object is found, and to receive a second image of the wireless charging area captured by the image acquisition device during the charging process in real time; a detection unit 603 configured to detect the distance between the live object and the vehicle to be charged if the result of live object detection on the second image is that a live object is found; and a control unit 604 configured to control the charging power of the wireless charging device for wireless charging the vehicle to be charged based on the distance between the live object and the vehicle to be charged.

[0108] In one embodiment of this application, the control unit 604 is further configured to: if the distance between the living creature and the vehicle to be charged is less than or equal to a preset safe distance, control the wireless charging device to wirelessly charge the vehicle to be charged to zero and generate a first alarm message to provide a prompt; if the distance between the living creature and the vehicle to be charged is greater than the preset safe distance, adjust the wireless charging device to wirelessly charge the vehicle to be charged according to the distance between the living creature and the vehicle to be charged, and obtain an adjusted charging power to use the adjusted charging power for wireless charging.

[0109] In one embodiment of this application, the control unit 604 is further configured to acquire the initial charging power of the wireless charging device for wirelessly charging the vehicle to be charged; and to calculate the adjusted charging power based on the initial charging power, the preset safety distance, and the distance between the living object and the vehicle to be charged.

[0110] In one embodiment of this application, the adjusted charging power P is calculated based on the initial charging power, the preset safety distance, and the distance between the living object and the vehicle to be charged, using the following formula:

[0111]

[0112] Where P0 is the initial charging power, d min The preset safety distance is d, where d is the distance between the living creature and the vehicle to be charged.

[0113] In one embodiment of this application, the detection unit 603 is further configured to identify the second image to determine the image distance between the living creature and the vehicle to be charged in the second image; and to determine the distance between the living creature and the vehicle to be charged based on the image distance and relevant parameters of the image acquisition device.

[0114] In one embodiment of this application, the control unit 604 is further configured to, if the result of foreign object detection on the first image is that a foreign object is present, control the wireless charging device to prevent the charging of the vehicle to be charged from starting, and generate a second warning message and provide a prompt.

[0115] In one embodiment of this application, the control unit 604 is further configured to control the wireless charging device to continue charging the vehicle to be charged if the result of liveness detection on the second image is that no live creature exists.

[0116] Based on the same inventive concept, embodiments of this application also provide a computer program product, the computer program product including computer instructions stored in a computer-readable storage medium and adapted to be read and executed by a processor to cause a computer device having the processor to perform the method described above.

[0117] Based on the same inventive concept, embodiments of this application provide a computer-readable storage medium storing at least one computer program instruction, which is loaded and executed by a processor to perform the operation as described above.

[0118] Based on the same inventive concept, and referring to Figure 7 This application also provides a schematic diagram of the structure of a computer system suitable for implementing the electronic device of this application.

[0119] It should be noted that, Figure 7 The computer system of the electronic device shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of this application.

[0120] like Figure 7 As shown, the computer system includes one or more memories 704, one or more processors 702, and at least one computer program (computer program instructions) stored in the memory 704 and executable on the processor 702. When the processor 702 executes the computer program, it implements the method described above.

[0121] Among them, Figure 7In this document, a bus architecture (represented by bus 700) is used. Bus 700 may include any number of interconnected buses and bridges, linking various circuits including one or more processors represented by processor 702 and memory represented by memory 704. Bus 700 may also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. Bus interface 705 provides an interface between bus 700 and receiver 701 and transmitter 703. Receiver 701 and transmitter 703 may be the same element, i.e., a transceiver, providing a unit for communicating with various other devices over a transmission medium. Processor 702 is responsible for managing bus 700 and general processing, while memory 704 can be used to store data used by processor 702 during operation.

[0122] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored as one or more instructions or codes on or transmitted via a computer-readable medium. Other examples and embodiments are within the scope and spirit of this application and the appended claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hardwired, or any combination thereof. Furthermore, the functional units may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit.

[0123] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0124] The units described as separate components may or may not be physically separate. Similarly, the components of the control device may or may not be physical units; they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0125] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing computer program instructions, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0126] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A method for controlling wireless charging of a vehicle, characterized in that, The method includes: The system receives a first image of the wireless charging area captured before wireless charging, sent by an image acquisition device installed on the vehicle to be charged. If the result of foreign object detection on the first image is that there is no foreign object, then the wireless charging device is controlled to charge the vehicle to be charged, and the second image of the wireless charging area collected during the charging process is received in real time by the image acquisition device. If the result of liveness detection on the second image is that a live object is present, then the distance between the live object and the vehicle to be charged is detected. If the distance between the living creature and the vehicle to be charged is less than or equal to a preset safe distance, the charging power of the wireless charging device for wireless charging of the vehicle to be charged is controlled to be zero, and a first alarm message is generated to provide a prompt. If the distance between the living creature and the vehicle to be charged is greater than the preset safe distance, the initial charging power of the wireless charging device for wireless charging of the vehicle to be charged is obtained; based on the initial charging power, the preset safe distance and the distance between the living creature and the vehicle to be charged, the adjusted charging power is calculated, and the adjusted charging power is used for wireless charging. Based on the initial charging power, the preset safety distance, and the distance between the living creature and the vehicle to be charged, the adjusted charging power P is calculated using the following formula: Where P0 is the initial charging power, d min The preset safety distance is d, where d is the distance between the living creature and the vehicle to be charged.

2. The method according to claim 1, characterized in that, Detecting the distance between the living organism and the vehicle to be charged includes: The second image is identified to determine the image distance between the living creature in the second image and the vehicle to be charged. The distance between the living creature and the vehicle to be charged is determined based on the image distance and the relevant parameters of the image acquisition device.

3. The method according to claim 1, characterized in that, The method further includes: If the result of foreign object detection on the first image indicates the presence of a foreign object, the wireless charging device is controlled to prevent charging of the vehicle to be charged, and a second warning message is generated and displayed.

4. The method according to claim 1, characterized in that, The method further includes: If the result of the liveness detection on the second image is that no live creature is found, then the wireless charging device is controlled to continue charging the vehicle to be charged.

5. A vehicle wireless charging control device, characterized in that, The device includes: The first receiving unit is configured to receive a first image of the wireless charging area captured before wireless charging by an image acquisition device, which is installed on the vehicle to be charged. The second receiving unit is configured to, if the result of foreign object detection on the first image is that no foreign object is found, control the wireless charging device to charge the vehicle to be charged, and receive in real time the second image of the wireless charging area collected during the charging process sent by the image acquisition device. The detection unit is configured to detect the distance between the live object and the vehicle to be charged if the result of live object detection on the second image is that a live object exists. The control unit is configured as follows: If the distance between the living creature and the vehicle to be charged is less than or equal to a preset safe distance, the charging power of the wireless charging device for wireless charging of the vehicle to be charged is controlled to be zero, and a first alarm message is generated to provide a prompt. If the distance between the living creature and the vehicle to be charged is greater than the preset safe distance, the initial charging power of the wireless charging device for wireless charging of the vehicle to be charged is obtained; based on the initial charging power, the preset safe distance and the distance between the living creature and the vehicle to be charged, the adjusted charging power is calculated, and the adjusted charging power is used for wireless charging. Based on the initial charging power, the preset safety distance, and the distance between the living creature and the vehicle to be charged, the adjusted charging power P is calculated using the following formula: Where P0 is the initial charging power, d min The preset safety distance is d, where d is the distance between the living creature and the vehicle to be charged.

6. A computer program product, characterized in that, The computer program product includes computer instructions stored in a computer-readable storage medium and adapted to be read and executed by a processor to cause a computer device having the processor to perform the method as described in any one of claims 1 to 4.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer program instructions that are loaded and executed by a processor to perform the operations performed by the method as described in any one of claims 1 to 4.

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