Safety status identification system for electric vehicle charging piles

By adopting a visual identification and overlap judgment mechanism in electric vehicle charging piles, we can judge whether the vehicle charging port and water body overlap, and perform early warning when overlapping, the charging risk problem caused by the difficulty of detecting fine water traces is solved, and charging safety is improved.

CN117746309BActive Publication Date: 2024-12-20ZHUHAI YOUDIAN NEW ENERGY TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202410085209.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-01-21
Publication Date
2024-12-20
Estimated Expiration
2044-01-21

AI Technical Summary

Technical Problem

When there is water in the charging port of the electric vehicle charging pile, the risk of short circuit and burning increases, especially the subtle water traces are difficult to detect manually, resulting in a significant increase in charging risk.

Method used

Using targeted visual identification mechanism and overlap judgment mechanism, through embedded cameras, data interpolation equipment, geometric correction equipment, content enhancement equipment and analysis equipment, based on the pixel point judgment mode, we judge whether the vehicle charging port and water overlap, and overlap in the overlapping When performing water body recognition early warning operation.

Benefits of technology

It improves the accuracy of scene judgment, realizes intelligent early warning of the existence of water bodies on the vehicle charging port, and avoids the occurrence of short circuits and burning accidents in the water bodies.

✦ Generated by Eureka AI based on patent content.

Smart Images

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Patent Text Reader

Abstract

The present invention relates to a safety status identification system for an electric vehicle charging pile, comprising: a second analysis device, used to issue a water body identification instruction when the number of pixels occupied by the closed block where the vehicle charging port is located and the closed block where the water body is located in the airspace enhancement image is greater than the sum of the number of pixels occupied by the closed block where the vehicle charging port is located and the number of pixels occupied by the closed block where the water body is located; an early warning execution device, used to execute a corresponding water body identification early warning operation upon receiving the water body identification instruction. Through the present invention, by adopting a targeted visual recognition mechanism and an overlap judgment mechanism, an effective judgment of whether the scene of the vehicle charging port and the water body overlaps is completed, and when it is judged that the vehicle charging port and the water body overlap, a water body identification early warning operation corresponding to the presence of water at the vehicle charging port is executed, thereby realizing the recognition and early warning of the presence of subtle water at the vehicle charging port.
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Description

Technical Field

[0001] The present invention relates to the field of electric vehicle charging piles, and in particular to a safety status identification system for electric vehicle charging piles. Background Art

[0002] As a green means of transportation with broad development prospects, electric vehicles will be popularized at an extremely rapid speed in the future, and the future market prospects are also extremely huge. Under the background of severe global energy crisis and environmental crisis, governments of various countries are actively promoting the application and development of new energy vehicles. Charging / swapping stations, as important supporting infrastructure necessary for the development of electric vehicles, have very important social and economic benefits. A campaign to build electric vehicle charging / swapping stations has been launched in various countries and regions.

[0003] However, when the charging pile provides charging services for electric vehicles, if there is water in the vehicle charging port, the risk of short circuit and burning of the vehicle charging port will increase greatly. In addition to the water marks in the vehicle charging port that can be seen by the naked eye, there are also some subtle water marks inside the vehicle charging port. These subtle water marks are difficult to detect manually, but the charging risk caused is also very high. Summary of the invention

[0004] In order to solve the technical problems in related fields, the present invention provides a safety status identification system for an electric vehicle charging pile. By adopting a targeted visual identification mechanism and a targeted overlap judgment mechanism, an effective judgment of the scene whether a vehicle charging port and a water body overlap is completed. The judgment mode based on pixel points improves the judgment accuracy of the scene. When it is judged that the vehicle charging port and the water body overlap, a water body identification and warning operation corresponding to the presence of water at the vehicle charging port is performed, thereby realizing an intelligent warning that the presence of water at the vehicle charging port hinders the safe charging of the charging pile.

[0005] According to the present invention, a safety status identification system for an electric vehicle charging pile is provided, the system comprising:

[0006] A state detection mechanism is provided in the electric vehicle charging pile, and is used to send a first detection signal when it is detected that the electric vehicle charging pile is currently in a preparatory charging state, and is also used to send a second detection signal when it is detected that the electric vehicle charging pile is currently in a suspended charging state;

[0007] an embedded camera, arranged just above the charging interpolation of the electric vehicle charging pile and connected to the state detection mechanism, for performing a camera action on the charging scene of the electric vehicle charging pile upon receiving the first detection signal to obtain a current camera frame corresponding to the current moment, and for terminating the camera action on the charging scene of the electric vehicle charging pile upon receiving the second detection signal;

[0008] A data interpolation device, disposed in the electric vehicle charging pile and connected to the embedded camera, for performing nearest neighbor interpolation processing on the received current camera frame to obtain and output a corresponding nearest neighbor interpolation image;

[0009] A geometric correction device, connected to the data interpolation device, for performing geometric correction processing on the received nearest neighbor interpolation image to obtain and output a corresponding geometric correction image;

[0010] A content enhancement device, connected to the geometric correction device, for performing image spatial domain enhancement processing on the received geometrically corrected image to obtain and output a corresponding spatial domain enhanced image;

[0011] a first parsing device, disposed in the electric vehicle charging pile and connected to the content enhancement device, for identifying a closed block where a vehicle charging port is located in the received spatial enhancement image based on the color imaging features of the vehicle charging port, and identifying a closed block where a water body is located in the received spatial enhancement image based on the color imaging features of the water body;

[0012] A second parsing device is connected to the first parsing device, and is used to issue a water body recognition instruction when the number of pixels occupied by the closed block where the vehicle charging port is located and the closed block where the water body is located in the airspace enhanced image is greater than the sum of the number of pixels occupied by the closed block where the vehicle charging port is located alone in the airspace enhanced image and the number of pixels occupied by the closed block where the water body is located alone in the airspace enhanced image, and is also used to issue a water body unrecognized instruction when the number of pixels occupied by the closed block where the vehicle charging port is located and the closed block where the water body is located in the airspace enhanced image is less than or equal to the sum of the number of pixels occupied by the closed block where the vehicle charging port is located alone in the airspace enhanced image and the number of pixels occupied by the closed block where the water body is located alone in the airspace enhanced image;

[0013] The warning execution device is connected to the second analysis device and is used to execute a water body identification warning operation corresponding to the presence of water at the vehicle charging port when receiving the water body identification instruction.

[0014] The present invention has at least the following three important invention points:

[0015] Firstly, a targeted visual recognition mechanism and a targeted overlap judgment mechanism are used to effectively judge whether the vehicle charging port and the water body overlap. The judgment mode based on pixels improves the judgment accuracy of the scene.

[0016] Secondly: when it is determined that the vehicle charging port and the water body overlap, a water body identification and warning operation corresponding to the presence of water at the vehicle charging port is performed, thereby realizing an intelligent warning of the presence of water at the vehicle charging port that hinders the safe charging of the charging pile;

[0017] Again: Before performing visual recognition of the scene where the vehicle charging port and the water body overlap, customized multiple optimization processing is performed on the on-site charging image to ensure the accuracy and speed of the subsequent visual recognition results. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The embodiments of the present invention will be described below with reference to the accompanying drawings.

[0019] Figure 1 A schematic diagram of the internal structure of a safety status identification system for an electric vehicle charging pile is shown for a vehicle charging port according to an embodiment of the present invention.

[0020] Figure 2 It is a schematic diagram of the internal structure of a safety status identification system for an electric vehicle charging pile according to an embodiment of the present invention.

[0021] Figure 3 Schematic diagram of the internal structure of a safety status identification system for an electric vehicle charging pile according to Embodiment C of the present invention. DETAILED DESCRIPTION

[0022] The implementation scheme of the safety status identification system for an electric vehicle charging pile of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] Figure 1 The internal structure diagram of the safety status identification system for an electric vehicle charging pile shown in the vehicle charging port according to an embodiment of the present invention, the system includes:

[0024] A state detection mechanism is provided in the electric vehicle charging pile, and is used to send a first detection signal when it is detected that the electric vehicle charging pile is currently in a preparatory charging state, and is also used to send a second detection signal when it is detected that the electric vehicle charging pile is currently in a suspended charging state;

[0025] Specifically, the state detection mechanism is arranged in the electric vehicle charging pile, and is used to send a first detection signal when it is detected that the electric vehicle charging pile is currently in a preparatory charging state, and is also used to send a second detection signal when it is detected that the electric vehicle charging pile is currently in a suspended charging state. The state detection mechanism is arranged in the electric vehicle charging pile, and is used to send a first detection signal when it is detected that the electric vehicle charging pile is currently in a preparatory charging state, and is also used to send a second detection signal when it is detected that the electric vehicle charging pile is currently in a suspended charging state;

[0026] an embedded camera, arranged just above the charging interpolation of the electric vehicle charging pile and connected to the state detection mechanism, for performing a camera action on the charging scene of the electric vehicle charging pile upon receiving the first detection signal to obtain a current camera frame corresponding to the current moment, and for terminating the camera action on the charging scene of the electric vehicle charging pile upon receiving the second detection signal;

[0027] For example, the embedded camera is arranged just above the charging interpolation of the electric vehicle charging pile, and is used to perform a camera action on the charging scene of the electric vehicle charging pile to obtain a current camera frame corresponding to the current moment, including: the embedded camera includes an explosion-proof lens and a photoelectric sensor, and is arranged just above the charging interpolation of the electric vehicle charging pile, and is used to perform a camera action on the charging scene of the electric vehicle charging pile to obtain a current camera frame corresponding to the current moment;

[0028] A data interpolation device, disposed in the electric vehicle charging pile and connected to the embedded camera, for performing nearest neighbor interpolation processing on the received current camera frame to obtain and output a corresponding nearest neighbor interpolation image;

[0029] A geometric correction device, connected to the data interpolation device, for performing geometric correction processing on the received nearest neighbor interpolation image to obtain and output a corresponding geometric correction image;

[0030] A content enhancement device, connected to the geometric correction device, for performing image spatial domain enhancement processing on the received geometrically corrected image to obtain and output a corresponding spatial domain enhanced image;

[0031] a first parsing device, disposed in the electric vehicle charging pile and connected to the content enhancement device, for identifying a closed block where a vehicle charging port is located in the received spatial enhancement image based on the color imaging features of the vehicle charging port, and identifying a closed block where a water body is located in the received spatial enhancement image based on the color imaging features of the water body;

[0032] A second parsing device is connected to the first parsing device, and is used to issue a water body recognition instruction when the number of pixels occupied by the closed block where the vehicle charging port is located and the closed block where the water body is located in the airspace enhanced image is greater than the sum of the number of pixels occupied by the closed block where the vehicle charging port is located alone in the airspace enhanced image and the number of pixels occupied by the closed block where the water body is located alone in the airspace enhanced image, and is also used to issue a water body unrecognized instruction when the number of pixels occupied by the closed block where the vehicle charging port is located and the closed block where the water body is located in the airspace enhanced image is less than or equal to the sum of the number of pixels occupied by the closed block where the vehicle charging port is located alone in the airspace enhanced image and the number of pixels occupied by the closed block where the water body is located alone in the airspace enhanced image;

[0033] an early warning execution device, connected to the second analysis device, for executing a water body identification early warning operation corresponding to the presence of water at the vehicle charging port upon receiving the water body identification instruction;

[0034] Wherein, the warning execution device is also used to stop executing the water body identification warning operation corresponding to the presence of water at the vehicle charging port when receiving the water body non-identification instruction.

[0035] Figure 2 It is a schematic diagram of the internal structure of a safety status identification system for an electric vehicle charging pile according to an embodiment of the present invention.

[0036] Compared with the vehicle charging port of the embodiment, the safety status identification system for the electric vehicle charging pile shown in the embodiment may also include the following components:

[0037] an ASIC control chip, connected to the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device, and the second parsing device, respectively, and used to provide configuration operations of working parameters for the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device, and the second parsing device in a time-sharing manner;

[0038] The ASIC control chip is respectively connected to the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device and the second parsing device, and is used to provide the configuration operation of working parameters for the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device and the second parsing device in time-sharing, including: the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device and the second parsing device share the same working parameter configuration interface;

[0039] Wherein, the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device and the second parsing device use different configuration address data;

[0040] Wherein, a parallel connection of a communication data link is established between each of the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device, and the second parsing device through a parallel data bus;

[0041] Among them, the parallel connection of the communication data link established between each of the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device and the second parsing device through a parallel data bus includes: the parallel data bus is one of an 8-bit parallel data bus, a 16-bit parallel data bus and a 32-bit parallel data bus.

[0042] Figure 3 Schematic diagram of the internal structure of a safety status identification system for an electric vehicle charging pile according to Embodiment C of the present invention.

[0043] Compared with the vehicle charging port of the embodiment, the safety status identification system for the electric vehicle charging pile shown in embodiment C may also include the following components:

[0044] a power support device, connected to the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device, and the second parsing device, respectively, for providing power distribution support of different working voltages for the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device, and the second parsing device in a time-sharing manner;

[0045] The power support device is respectively connected to the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device and the second parsing device, and is used to provide power distribution support of different working voltages for the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device and the second parsing device in a time-sharing manner, including: two or more devices with the same working voltage requirement among the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device and the second parsing device use the same power supply line;

[0046] Wherein, the power support device is respectively connected to the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device and the second parsing device, and is used to provide power distribution support of different working voltages for the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device and the second parsing device in a time-sharing manner, and further includes: the power support device is an uninterruptible power supply device;

[0047] The power support device is respectively connected to the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device and the second parsing device, and is used to provide power distribution support with different working voltages for the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device and the second parsing device in a time-sharing manner, and further includes: providing different working voltages including a 3.3V working voltage for the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device and the second parsing device in a time-sharing manner;

[0048] And wherein, the power support device is respectively connected to the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device and the second parsing device, and is used to provide power distribution support with different working voltages for the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device and the second parsing device in a time-sharing manner, and also includes: providing different working voltages including a 5V working voltage for the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device and the second parsing device in a time-sharing manner.

[0049] In addition, in the safety status identification system for electric vehicle charging piles, a closed block where the vehicle charging port is located is identified based on the color imaging features of the vehicle charging port in the received spatial domain enhanced image, and a closed block where the water body is located is identified based on the color imaging features of the water body in the received spatial domain enhanced image, including: the color imaging feature of the vehicle charging port is the numerical distribution range of each color component corresponding to the vehicle charging port, and the color imaging feature of the water body is the numerical distribution range of each color component corresponding to the water body.

[0050] The safety status identification system for electric vehicle charging piles of the present invention solves the technical problem in the prior art that it is difficult to identify subtle water marks at the vehicle charging port. By adopting a targeted visual identification mechanism and an overlap judgment mechanism, an effective judgment of whether the vehicle charging port and the water body overlap is completed. When it is determined that the vehicle charging port and the water body overlap, a water body identification and early warning operation corresponding to the presence of water at the vehicle charging port is performed, thereby realizing the identification and early warning of subtle water bodies at the vehicle charging port, and avoiding accidents related to water short circuits.

[0051] It is obvious to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the present invention. Therefore, it is intended that the present invention covers modifications and variations of the present invention that fall within the scope of the appended claims and their equivalents.

Claims

1. A safety status identification system for an electric vehicle charging pile, characterized in that: The system comprises: A state detection mechanism is provided in the electric vehicle charging pile, and is used to send a first detection signal when it is detected that the electric vehicle charging pile is currently in a preparatory charging state, and is also used to send a second detection signal when it is detected that the electric vehicle charging pile is currently in a suspended charging state; an embedded camera, arranged just above the charging interpolation of the electric vehicle charging pile and connected to the state detection mechanism, for performing a camera action on the charging scene of the electric vehicle charging pile upon receiving the first detection signal to obtain a current camera frame corresponding to the current moment, and for terminating the camera action on the charging scene of the electric vehicle charging pile upon receiving the second detection signal; A data interpolation device, disposed in the electric vehicle charging pile and connected to the embedded camera, for performing nearest neighbor interpolation processing on the received current camera frame to obtain and output a corresponding nearest neighbor interpolation image; A geometric correction device, connected to the data interpolation device, for performing geometric correction processing on the received nearest neighbor interpolation image to obtain and output a corresponding geometric correction image; A content enhancement device, connected to the geometric correction device, for performing image spatial domain enhancement processing on the received geometrically corrected image to obtain and output a corresponding spatial domain enhanced image; a first parsing device, disposed in the electric vehicle charging pile and connected to the content enhancement device, for identifying a closed block where a vehicle charging port is located in the received spatial enhancement image based on the color imaging features of the vehicle charging port, and identifying a closed block where a water body is located in the received spatial enhancement image based on the color imaging features of the water body; A second parsing device is connected to the first parsing device, and is used to issue a water body recognition instruction when the number of pixels occupied by the closed block where the vehicle charging port is located and the closed block where the water body is located in the airspace enhanced image is greater than the sum of the number of pixels occupied by the closed block where the vehicle charging port is located alone in the airspace enhanced image and the number of pixels occupied by the closed block where the water body is located alone in the airspace enhanced image, and is also used to issue a water body unrecognized instruction when the number of pixels occupied by the closed block where the vehicle charging port is located and the closed block where the water body is located in the airspace enhanced image is less than or equal to the sum of the number of pixels occupied by the closed block where the vehicle charging port is located alone in the airspace enhanced image and the number of pixels occupied by the closed block where the water body is located alone in the airspace enhanced image; The warning execution device is connected to the second analysis device and is used to execute a water body identification warning operation corresponding to the presence of water at the vehicle charging port when receiving the water body identification instruction.

2. The safety status identification system for an electric vehicle charging pile according to claim 1, characterized in that: The warning execution device is also used to stop executing the water body identification warning operation corresponding to the presence of water at the vehicle charging port when receiving the water body non-identification instruction.

3. The safety status identification system for electric vehicle charging piles according to claim 2, characterized in that: The system further comprises: an ASIC control chip, connected to the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device, and the second parsing device, respectively, and used to provide configuration operations of working parameters for the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device, and the second parsing device in a time-sharing manner; Among them, the ASIC control chip is respectively connected to the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device and the second parsing device, and is used to provide working parameter configuration operations for the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device and the second parsing device in time-sharing, including: the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device and the second parsing device share the same working parameter configuration interface.

4. The safety status identification system for an electric vehicle charging pile according to claim 3, characterized in that: The data interpolation device, the geometry correction device, the content enhancement device, the first parsing device, and the second parsing device use different configuration address data.

5. The safety status identification system for electric vehicle charging piles according to claim 3, characterized in that: Establishing parallel connections of communication data links between the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device, and the second parsing device through parallel data buses; Among them, the parallel connection of the communication data link established between each of the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device and the second parsing device through a parallel data bus includes: the parallel data bus is one of an 8-bit parallel data bus, a 16-bit parallel data bus and a 32-bit parallel data bus.

6. The safety status identification system for electric vehicle charging piles according to claim 2, characterized in that: The system further comprises: a power support device, connected to the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device, and the second parsing device, respectively, for providing power distribution support of different working voltages for the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device, and the second parsing device in a time-sharing manner; Among them, the power support device is respectively connected to the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device and the second parsing device, and is used to provide power distribution support with different working voltages for the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device and the second parsing device in a time-sharing manner, including: among the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device and the second parsing device, two or more devices with the same working voltage requirements use the same power supply line.

7. The safety status identification system for an electric vehicle charging pile according to claim 6, characterized in that: The power support device is respectively connected to the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device and the second parsing device, and is used to provide power distribution support with different working voltages for the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device and the second parsing device in a time-sharing manner, and also includes: the power support device is an uninterruptible power supply device.

8. The safety status identification system for an electric vehicle charging pile according to claim 7, characterized in that: The power support device is respectively connected to the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device and the second parsing device, and is used to provide power distribution support with different operating voltages for the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device and the second parsing device in a time-sharing manner, and also includes: providing different operating voltages including a 3.3V operating voltage for the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device and the second parsing device in a time-sharing manner.

9. The safety status identification system for an electric vehicle charging pile according to claim 8, characterized in that: The power support device is respectively connected to the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device and the second parsing device, and is used to provide power distribution support with different working voltages for the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device and the second parsing device in a time-sharing manner, and also includes: providing different working voltages including a 5V working voltage for the data interpolation device, the geometric correction device, the content enhancement device, the first parsing device and the second parsing device in a time-sharing manner.