Charging pile charging abnormity detection method and system

Abstract

The invention relates to the technical field of charging pile operation and maintenance, and provides a charging pile charging abnormity detection method and system, and the method comprises the steps: obtaining and recognizing a vehicle connection image corresponding to a charging abnormity signal, obtaining an image area proportion, carrying out the comparison, and judging whether the connection abnormity of a charging gun and a vehicle exists under the charging abnormity signal or not; when the comparison difference value is larger than the threshold value, it can be determined that connection is abnormal due to the foreign matter, then the position relation between the charging gun and the charging pile is recognized in the corresponding charging pile connection image, whether the charging fault is the foreign matter on the vehicle interface or the foreign matter fault on the charging gun is detected, charging fault detection of the charging pile is achieved, the operation and maintenance cost is reduced, and the charging efficiency is improved. The detection precision is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of charging pile operation and maintenance, and in particular to a charging pile charging anomaly detection method and system. Background Art

[0002] With the development of new energy vehicles, the number of charging stations is increasing. Various user behaviors and frequent uses of charging piles may cause charging guns to malfunction. However, if operation and maintenance personnel need to conduct frequent inspections of charging piles one by one, the labor cost will be extremely high. In addition, setting up cameras at each charging pile to shoot the interface will also have a huge equipment cost. The locking devices on the charging guns are mostly mechanical devices, and there are many situations where they cannot be locked or connected in place, and charging can still be carried out, but it will be charged at a lower charging power. Therefore, the current charging piles have the problem of difficulty in detecting charging abnormalities and high costs. Summary of the invention

[0003] The present invention provides a charging pile charging anomaly detection method, which is used to solve the problems in the prior art that the charging pile has difficulty in detecting charging anomaly and has high cost.

[0004] A first aspect of the present invention provides a method for detecting abnormal charging of a charging pile, comprising: Acquire the abnormal charging signal and identify the user charging time node corresponding to the abnormal charging signal; acquire the current vehicle connection image based on the user charging time node and acquire the user's historical vehicle connection image; acquire the adjacent return record time node based on the user charging time node and acquire the corresponding charging pile connection image based on the return record time node; Identify the charging gun in the current vehicle connection image, calculate the image area ratio of the connected part and the non-connected part of the charging gun, and obtain a first ratio; identify the charging gun in the historical vehicle connection image, calculate the image area ratio of the connected part and the non-connected part of the charging gun, and obtain a second ratio; if the difference between the first ratio and the second ratio is greater than a preset threshold, it is determined that a foreign object abnormality exists; Identify the coordinates of the charging gun feature points and the charging pile feature points in the charging pile connection image, and obtain the first coordinate distance; if the first coordinate distance exceeds the preset interval, the charging gun is judged to be abnormal, and a signal is sent to the operation and maintenance personnel; if the first coordinate distance is within the preset interval, the vehicle charging interface is judged to be abnormal, and a vehicle charging interface abnormality signal is sent to the user.

[0005] Optionally, the acquiring of the abnormal charging signal is specifically: Receive the charging gun return signal, obtain the real-time charging pile connection image at every preset time interval, calculate the feature point coordinate distance to obtain the second coordinate distance, and when the second coordinate distance exceeds the preset interval, identify whether the real-time charging pile connection image is the first image after receiving the charging gun return signal. If so, generate a charging abnormality signal, if not, send a signal to the operation and maintenance personnel.

[0006] Optionally, the step of obtaining the abnormal charging signal may also specifically include: The charging signal is received, a real-time vehicle connection image is obtained at every preset time interval, and the area of ​​the connected part image is calculated. When the area of ​​the connected part image is greater than a preset threshold, it is determined that there is a possibility of connection abnormality, and a charging abnormality signal is generated.

[0007] The second aspect of the present application provides a charging pile charging anomaly detection system, comprising: An image acquisition module is used to acquire a charging abnormality signal and identify the user charging time node corresponding to the charging abnormality signal; acquire the current vehicle connection image based on the user charging time node, and acquire the user's historical vehicle connection image; acquire the adjacent return record time node based on the user charging time node, and acquire the corresponding charging pile connection image based on the return record time node; A foreign object anomaly detection module is used to identify the charging gun in the current vehicle connection image, calculate the image area ratio of the connected part and the non-connected part of the charging gun, and obtain a first ratio; identify the charging gun in the historical vehicle connection image, calculate the image area ratio of the connected part and the non-connected part of the charging gun, and obtain a second ratio; if the difference between the first ratio and the second ratio is greater than a preset threshold, it is determined that a foreign object anomaly exists; The foreign object position identification module is used to identify the coordinates of the characteristic points of the charging gun and the charging pile in the charging pile connection image, and obtain the first coordinate distance; if the first coordinate distance exceeds the preset interval, the charging gun is judged to be abnormal and a signal is sent to the operation and maintenance personnel; if the first coordinate distance is within the preset interval, the vehicle charging interface is judged to be abnormal, and a vehicle charging interface abnormality signal is sent to the user.

[0008] Optionally, in the image acquisition module, acquiring the abnormal charging signal is specifically: Receive the charging gun return signal, obtain the real-time charging pile connection image at every preset time interval, calculate the feature point coordinate distance to obtain the second coordinate distance, and when the second coordinate distance exceeds the preset interval, identify whether the real-time charging pile connection image is the first image after receiving the charging gun return signal. If so, generate a charging abnormality signal, if not, send a signal to the operation and maintenance personnel.

[0009] Optionally, in the image acquisition module, acquiring the abnormal charging signal may also be: The charging signal is received, a real-time vehicle connection image is obtained at every preset time interval, and the area of ​​the connected part image is calculated. When the area of ​​the connected part image is greater than a preset threshold, it is determined that there is a possibility of connection abnormality, and a charging abnormality signal is generated.

[0010] A third aspect of the present application provides a charging pile charging anomaly detection method device, the device comprising a processor and a memory: The memory is used to store program code and transmit the program code to the processor; The processor is used to execute a charging pile charging abnormality detection method as described in any one of the first aspects of the present invention according to the instructions in the program code.

[0011] A fourth aspect of the present application provides a computer-readable storage medium, which is used to store program code, and the program code is used to execute a charging pile charging abnormality detection method as described in any one of the first aspects of the present invention.

[0012] It can be seen from the above technical scheme that the present invention has the following advantages: by acquiring and identifying the vehicle connection image corresponding to the charging abnormality signal, the image area ratio is obtained for comparison, and it is determined whether there is an abnormal connection between the charging gun and the vehicle under the charging abnormality signal. After the difference in the comparison is greater than the threshold, it can be determined that the connection is abnormal due to foreign matter, and then the positional relationship between the charging gun and the charging pile is identified in the corresponding charging pile connection image, and it is detected whether the charging fault is a foreign matter on the vehicle interface or a foreign matter fault on the charging gun, so as to realize charging fault detection of the charging pile, reduce operation and maintenance costs, and improve detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 A flow chart of a charging pile charging anomaly detection method; Figure 2 This is a structural diagram of a charging pile charging anomaly detection system. DETAILED DESCRIPTION

[0015] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] The present invention provides a charging pile charging anomaly detection method, which is used to solve the problems in the prior art that the charging pile has difficulty in detecting charging anomaly and has high cost.

[0017] See also Figure 1 , Figure 1 The present invention provides a first flow chart of a charging pile charging anomaly detection method.

[0018] S100, obtaining a charging abnormality signal, identifying a user charging time node corresponding to the charging abnormality signal; obtaining a current vehicle connection image based on the user charging time node, and obtaining a user's historical vehicle connection image; obtaining an adjacent return record time node based on the user charging time node, and obtaining a corresponding charging pile connection image based on the return record time node; It should be noted that the main charging abnormality detected in this embodiment is the presence of foreign matter in the charging port. The charging gun and the charging port are not exposed to the outside most of the time, and the foreign matter mainly comes from their own deformation or damage, such as rupture and damage caused by long-term use, and high-temperature expansion and deformation. The presence of foreign matter or deformation in the charging port may cause the charging gun to not fit the charging pile placement port or the vehicle charging port. However, the misfit does not stop charging, but low charging power will occur. After completing charging, if the user finds that the vehicle charging amount does not match the actual charging time, the charging abnormality will be reported, but the user is not clear about the cause of the abnormality; the time reported by the user is generally after the charging is completed, that is, when the charging abnormality signal is received, the charging gun is not connected to the charging port of the user's vehicle that reports the charging abnormality, so it is necessary to obtain the corresponding image according to the charging time node of the reporting user; the charging history of the charging pile can be used to record the charging status of the charging gun. The charging time period in which the user reports that there is charging anomaly is obtained by recording, and a time node is selected from it. Generally, the time node when the charging time period is close to the end is selected. The charging station is equipped with an in-station monitoring camera to shoot charging. The deployment method of solar power supply + 4G camera can be used to solve the on-site network and power supply of the camera. The video stream is transmitted back to the monitoring platform for processing. Based on the selected user charging time node, the corresponding frame is extracted from the monitoring video to obtain the current vehicle connection image; the charging pile will also monitor the current and voltage data during charging, and will also upload an abnormal signal when the data exceeds the standard range, and issue an instruction to intercept the current vehicle connection image; users generally have multiple usage records at the charging station, and the user's previous charging images can be obtained based on the historical monitoring video to obtain the historical vehicle connection image. When obtaining the historical vehicle connection image, it can also be confirmed in the user information that the historical connection is consistent with the currently connected vehicle; Before and after the vehicle connection status at the user's charging time node is the status of the charging gun being returned to the charging pile. There will be a return record when the user returns the charging gun after charging is completed, and the charging gun is also in a returned state at the charging pile before it is taken. After identifying the return record time node closest to the user's charging time node, the corresponding charging pile connection image is extracted from the charging pile monitoring video.

[0019] S200, identifying the charging gun in the current vehicle connection image, calculating the image area ratio of the connected part and the non-connected part of the charging gun, and obtaining a first ratio; identifying the charging gun in the historical vehicle connection image, calculating the image area ratio of the connected part and the non-connected part of the charging gun, and obtaining a second ratio; if the difference between the first ratio and the second ratio is greater than a preset threshold, determining that a foreign object abnormality exists; It should be noted that in the current vehicle connection image, the charging gun is identified according to the preset charging gun image features. The charging gun can be divided into a connection part and a non-connection part. The connection part will be inserted into the vehicle charging port in the charging state, and the connection part should be completely blocked in the fully fitted state, while the non-connection part is the charging gun handle and other positions, which will not be blocked in the charging state. The color difference between the non-connection part and the connection part is very large, and they can be distinguished according to the grayscale in the image; after the area of ​​the charging gun is identified in the vehicle connection image, the area ratio of the connection part and the non-connection part can be calculated according to the grayscale area; the historical vehicle connection image should correspond to the normal charging state. In the fully fitted connection without foreign objects, the area of ​​the connection part is basically 0, so the second ratio calculated It can be regarded as 0; when there is a foreign object connected to the charging gun at the user's charging time node, the connection part cannot be completely immersed, then the first ratio will be greater than 0. When the difference between the first ratio and the second ratio is greater than the preset threshold, it reflects that the connection part in the current vehicle connection image is exposed larger, and it is determined that there is a charging foreign object abnormality; the orientation of the charging piles in the charging station is consistent and the position of the charging port of the user's vehicle is also fixed. In the current vehicle connection image and the historical vehicle connection image, only the size ratio caused by the difference in distance between the vehicle and the camera is different, and the distance size ratio does not affect the calculated image ratio; if the difference between the first ratio and the second ratio is less than the preset threshold, there may be a line fault or an abnormality other than the external appearance. Other detection methods can be used to reduce the workload of operation and maintenance personnel.

[0020] S300, identify the coordinates of the characteristic points of the charging gun and the charging pile in the charging pile connection image, and obtain the first coordinate distance; if the first coordinate distance exceeds the preset interval, the charging gun is judged to be abnormal, and a signal is sent to the operation and maintenance personnel; if the first coordinate distance is within the preset interval, the vehicle charging interface is judged to be abnormal, and a vehicle charging interface abnormality signal is sent to the user.

[0021] It should be noted that after confirming the presence of foreign matter in the above steps, it is also necessary to determine whether the charging port of the user's vehicle is deformed or damaged or the charging gun interface is deformed or damaged; although there are charging piles of various shapes and styles, the models of charging guns for charging piles in charging stations are known and fixed, and generally only the appearance of DC guns and AC guns differ. Therefore, the characteristic images of charging guns and charging piles can be preset in the image recognition library. When identifying the charging pile connection image, the corresponding DC or AC standard image can be determined according to the gun type information that reports the abnormal charging signal. Feature points will be preset on the charging pile and charging gun for coordinate positioning in the image. The distance between the two feature points can be calculated by identifying the coordinates of the charging gun feature points and the charging pile feature points in the image to obtain the first coordinate distance. The first coordinate distance reflects the position of the charging gun on the charging pile. When the charging gun is correctly installed back on the charging pile The relative position between the charging pile and the charging gun should be within a certain range. The positions of the camera and the charging pile are fixed and known. Therefore, the distance interval of the feature points in the picture can be preset. When the first coordinate distance is not within the preset distance interval, it is considered that the current charging gun is abnormally connected to the charging pile, and there is an abnormality on the interface of the charging gun. The probability that the charging gun interface and the vehicle interface are deformed and damaged at the same time is low. Therefore, when the first coordinate distance exceeds the preset interval, the charging gun can be judged to be abnormal, and a signal is sent to the operation and maintenance personnel to replace or repair the charging gun; when the first coordinate distance is within the preset distance interval, it is considered that the current charging gun is normally connected to the charging pile. The foreign body situation in the aforementioned step S200 is caused by deformation or damage of the vehicle's charging interface. At this time, the user who reports the charging abnormality can be fed back that there is an abnormality in the vehicle interface, thereby realizing the detection of charging pile charging failure.

[0022] In this embodiment, by acquiring and identifying the vehicle connection image corresponding to the charging abnormality signal, the image area ratio is obtained for comparison, and it is determined whether there is an abnormal connection between the charging gun and the vehicle under the charging abnormality signal. After the comparison difference is greater than the threshold, it can be determined that the connection is abnormal due to foreign matter, and then the positional relationship between the charging gun and the charging pile is identified in the corresponding charging pile connection image, and it is detected whether the charging fault is a foreign object on the vehicle interface or a foreign object fault on the charging gun, thereby realizing charging fault detection of the charging pile, reducing operation and maintenance costs, and improving detection accuracy.

[0023] The above is a detailed description of the first embodiment of a charging pile charging anomaly detection method provided by the present application. The following is a detailed description of the second embodiment of a charging pile charging anomaly detection method provided by the present application.

[0024] In the present embodiment, a charging pile charging anomaly detection method is further provided. In the aforementioned step S100, the acquisition of the charging anomaly signal is specifically as follows: receiving a charging gun return signal, acquiring a real-time charging pile connection image at every preset time interval, calculating the feature point coordinate distance to obtain a second coordinate distance, and when the second coordinate distance exceeds a preset interval, identifying whether the real-time charging pile connection image is the first image after receiving the charging gun return signal, and if so, generating a charging anomaly signal, and if not, sending a signal to the operation and maintenance personnel; It should be noted that the charging abnormality signal in the aforementioned step S100 needs to be actively sent by the user, which belongs to the passive discovery of the charging pile fault. However, it is possible that the user does not notice and report it. However, in order to ensure the safety of subsequent charging, active detection should also be carried out; surveillance cameras will be used in the charging station to shoot surveillance images throughout the day, but if the surveillance images are continuously recognized, a lot of computing power will be consumed and resources will be lost. Therefore, after the charging gun is returned, the recognition and judgment can be performed once every preset time, and the time interval is set according to the detection accuracy requirements; the real-time charging pile connection image is the surveillance image, and the image in the charging station is judged. Multiple charging piles will be captured in the surveillance image at the same time. Therefore, the charging piles at different positions can be divided into image areas first, and then the coordinates of the feature points are calculated. When the second coordinate distance exceeds the preset interval, it is necessary to judge the time relationship between the real-time charging pile connection image that detects this situation and the charging gun return signal. If it is detected that the second coordinate distance exceeds the preset interval, it is If the first real-time charging pile connection image just after the charging gun is returned is found, it can be considered that there is a possibility of foreign matter in the charging gun when the user was charging before the charging gun was returned, and a charging abnormality signal is generated. Then the aforementioned steps S100 and S200 are executed to identify whether there is an abnormality in the vehicle connection. At this time, the user charging time node corresponding to the charging abnormality signal is a node in the user charging time period before the charging gun was returned. If the corresponding current vehicle connection image determines that there is a foreign matter abnormality, it can be determined that there is a foreign matter abnormality in the charging gun interface, and the charging gun needs to be repaired; if no abnormality is found in the vehicle connection image through steps S100 and S200, it can be determined that the charging gun connection abnormality is caused by damage to the charging pile, and the charging pile needs to be repaired; if it is not the first real-time charging pile connection image after the charging gun is returned, it can be determined that the foreign matter appeared when the charging gun was on the charging pile, which has nothing to do with the user, and may be an abnormality caused by wind erosion and sunshine, which requires maintenance by operation and maintenance personnel.

[0025] Furthermore, in the aforementioned step S100, the obtaining of the abnormal charging signal may specifically include: receiving the charging signal, obtaining a real-time vehicle connection image at each preset time interval, and calculating the area of ​​the connected portion image, and when the area of ​​the connected portion image is greater than a preset threshold, determining that there is a possibility of abnormal connection, and generating the abnormal charging signal; It should be noted that during the charging process, active abnormality detection can also be performed based on the monitoring image. After receiving the charging signal, the user has connected the charging gun to the vehicle interface. At this time, the connection part in the real-time vehicle connection image can be identified and the image area can be calculated. The calculation method is consistent with the content of the aforementioned step S200. When correctly connected, the connection part should be immersed in the vehicle interface. A threshold value of the image area can be preset. When the image area of ​​the connection part is larger than the preset threshold, it is considered that there is a possibility of connection abnormality. Because no proportion is judged, there is uncertainty about the distance between the user's parking and the camera. Therefore, at this time, there is only a possibility of connection abnormality, and the image area threshold should be adaptively changed according to the user's parking position. The farther the charging pile parking space is from the camera, the smaller the image area threshold should be. After judging that there is a possibility of connection abnormality, there is no need for the user to actively report the abnormality, and the subsequent judgment step S100 can be performed.

[0026] The above is a detailed description of a charging pile charging anomaly detection method provided in the first aspect of the present application. The following is a detailed description of an embodiment of a charging pile charging anomaly detection system provided in the second aspect of the present application.

[0027] See also Figure 2 , Figure 2 This is a structural diagram of a charging pile charging anomaly detection system. This embodiment provides a charging pile charging anomaly detection system, including: The image acquisition module 10 is used to acquire the abnormal charging signal and identify the user charging time node corresponding to the abnormal charging signal; acquire the current vehicle connection image based on the user charging time node, and acquire the user's historical vehicle connection image; acquire the adjacent return record time node based on the user charging time node, and acquire the corresponding charging pile connection image based on the return record time node; The foreign object abnormality detection module 20 is used to identify the charging gun in the current vehicle connection image, calculate the image area ratio of the connected part and the non-connected part of the charging gun, and obtain a first ratio; identify the charging gun in the historical vehicle connection image, calculate the image area ratio of the connected part and the non-connected part of the charging gun, and obtain a second ratio; if the difference between the first ratio and the second ratio is greater than a preset threshold, it is determined that a foreign object abnormality exists; The foreign object position identification module 30 is used to identify the coordinates of the characteristic points of the charging gun and the charging pile in the charging pile connection image, and obtain the first coordinate distance; if the first coordinate distance exceeds the preset interval, the charging gun is judged to be abnormal, and a signal is sent to the operation and maintenance personnel; if the first coordinate distance is within the preset interval, the vehicle charging interface is judged to be abnormal, and a vehicle charging interface abnormality signal is sent to the user.

[0028] Furthermore, in the image acquisition module 10, acquiring the abnormal charging signal is specifically as follows: Receive the charging gun return signal, obtain the real-time charging pile connection image at every preset time interval, calculate the feature point coordinate distance to obtain the second coordinate distance, and when the second coordinate distance exceeds the preset interval, identify whether the real-time charging pile connection image is the first image after receiving the charging gun return signal. If so, generate a charging abnormality signal, if not, send a signal to the operation and maintenance personnel.

[0029] Furthermore, in the image acquisition module 10, acquiring the abnormal charging signal may also be specifically performed as follows: The charging signal is received, a real-time vehicle connection image is obtained at every preset time interval, and the area of ​​the connected part image is calculated. When the area of ​​the connected part image is greater than a preset threshold, it is determined that there is a possibility of connection abnormality, and a charging abnormality signal is generated.

[0030] The third aspect of the present application also provides a charging pile charging anomaly detection method device, including a processor and a memory: the memory is used to store program code and transmit the program code to the processor; the processor is used to execute the above-mentioned charging pile charging anomaly detection method according to the instructions in the program code.

[0031] A fourth aspect of the present application provides a computer-readable storage medium, characterized in that the computer-readable storage medium is used to store program code, and the program code is used to execute the above-mentioned charging pile charging abnormality detection method.

[0032] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described devices and equipment can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0033] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0034] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0035] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0036] If the integrated unit is implemented in the form of 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 the present invention, 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. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0037] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A charging pile charging anomaly detection method, characterized in that include: Obtain a charging abnormality signal and identify the user charging time node corresponding to the charging abnormality signal; The current vehicle connection image is obtained based on the user's charging time node, and the user's historical vehicle connection image is obtained; the adjacent return record time node is obtained based on the user's charging time node, and the corresponding charging pile connection image is obtained based on the return record time node; Identify the charging gun in the current vehicle connection image, calculate the image area ratio of the connected part and the non-connected part of the charging gun, and obtain a first ratio; identify the charging gun in the historical vehicle connection image, calculate the image area ratio of the connected part and the non-connected part of the charging gun, and obtain a second ratio; If the difference between the first ratio and the second ratio is greater than a preset threshold, it is determined that a foreign body abnormality exists; Identify the coordinates of the charging gun feature points and the charging pile feature points in the charging pile connection image, and obtain the first coordinate distance; if the first coordinate distance exceeds the preset interval, the charging gun is judged to be abnormal, and a signal is sent to the operation and maintenance personnel; if the first coordinate distance is within the preset interval, the vehicle charging interface is judged to be abnormal, and a vehicle charging interface abnormality signal is sent to the user.

2. A charging pile charging anomaly detection method according to claim 1, characterized in that: The specific steps of obtaining the abnormal charging signal are as follows: Receive the charging gun return signal, obtain the real-time charging pile connection image at every preset time interval, calculate the feature point coordinate distance to obtain the second coordinate distance, and when the second coordinate distance exceeds the preset interval, identify whether the real-time charging pile connection image is the first image after receiving the charging gun return signal. If so, generate a charging abnormality signal, if not, send a signal to the operation and maintenance personnel.

3. A charging pile charging anomaly detection method according to claim 1, characterized in that: The obtaining of the abnormal charging signal may also specifically include: The charging signal is received, a real-time vehicle connection image is obtained at every preset time interval, and the area of ​​the connected part image is calculated. When the area of ​​the connected part image is greater than a preset threshold, it is determined that there is a possibility of connection abnormality, and a charging abnormality signal is generated.

4. A charging pile charging anomaly detection system, characterized in that: include: An image acquisition module is used to acquire a charging abnormality signal and identify a user charging time node corresponding to the charging abnormality signal; The current vehicle connection image is obtained based on the user's charging time node, and the user's historical vehicle connection image is obtained; the adjacent return record time node is obtained based on the user's charging time node, and the corresponding charging pile connection image is obtained based on the return record time node; A foreign object anomaly detection module is used to identify the charging gun in the current vehicle connection image, calculate the image area ratio of the connected part and the non-connected part of the charging gun, and obtain a first ratio; identify the charging gun in the historical vehicle connection image, calculate the image area ratio of the connected part and the non-connected part of the charging gun, and obtain a second ratio; If the difference between the first ratio and the second ratio is greater than a preset threshold, it is determined that a foreign body abnormality exists; The foreign object position identification module is used to identify the coordinates of the characteristic points of the charging gun and the charging pile in the charging pile connection image, and obtain the first coordinate distance; if the first coordinate distance exceeds the preset interval, the charging gun is judged to be abnormal and a signal is sent to the operation and maintenance personnel; if the first coordinate distance is within the preset interval, the vehicle charging interface is judged to be abnormal, and a vehicle charging interface abnormality signal is sent to the user.

5. A charging pile charging anomaly detection system according to claim 4, characterized in that: In the image acquisition module, acquiring the abnormal charging signal is specifically as follows: Receive the charging gun return signal, obtain the real-time charging pile connection image at every preset time interval, calculate the feature point coordinate distance to obtain the second coordinate distance, and when the second coordinate distance exceeds the preset interval, identify whether the real-time charging pile connection image is the first image after receiving the charging gun return signal. If so, generate a charging abnormality signal, if not, send a signal to the operation and maintenance personnel.

6. A charging pile charging anomaly detection system according to claim 4, characterized in that: In the image acquisition module, acquiring the abnormal charging signal may specifically be: The charging signal is received, a real-time vehicle connection image is obtained at every preset time interval, and the area of ​​the connected part image is calculated. When the area of ​​the connected part image is greater than a preset threshold, it is determined that there is a possibility of connection abnormality, and a charging abnormality signal is generated.

7. A charging pile charging anomaly detection device, characterized in that: The device comprises a processor and a memory: The memory is used to store program code and transmit the program code to the processor; The processor is used to execute a charging pile charging anomaly detection method as described in any one of claims 1-3 according to the instructions in the program code.

8. A computer-readable storage medium, characterized in that: The computer-readable storage medium is used to store program code, and the program code is used to execute the charging abnormality detection method for a charging pile according to any one of claims 1-3.

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