Control method and equipment of electric vehicle charging security and protection system and storage medium

Abstract

The invention discloses a control method and device of an electric vehicle charging security system and a storage medium, and belongs to the technical field of temperature detection. The method comprises the steps of receiving a charging pile temperature sent by a temperature sensor; when the temperature of the charging pile is larger than a preset temperature early warning threshold value, a data acquisition instruction is sent to early warning camera equipment corresponding to the temperature sensor, and the early warning camera equipment captures the charging pile according to the data acquisition instruction and uploads the captured charging pile picture to a server; and receiving and identifying the charging pile picture collected by the early warning camera device, and determining a temperature detection result of the charging pile according to an identification result. According to the method, the charging pile temperature of the temperature sensor is received, when it is detected that the preset temperature early-warning threshold value is exceeded, the data acquisition instruction is sent to the associated early-warning camera device, the picture captured by the early-warning camera device is received and recognized, the temperature detection result of the charging pile is determined, and accurate response to the abnormal temperature is achieved.

Description

Technical Field

[0001] The present application relates to the field of temperature detection technology, and in particular to a control method, device and storage medium for an electric vehicle charging safety system. Background Art

[0002] At present, the main installation scene of electric vehicle charging piles is open-air outdoor carports. The relevant technology installs a hanging smoke alarm at the charging pile site, which triggers an automatic alarm when the smoke alarm detects that the smoke concentration is too high.

[0003] However, smoke alarms are easily affected by dust, air humidity, air quality, etc. in outdoor environments, and are prone to false alarm triggering, causing unnecessary waste of manpower and material resources, while also having the problem of low accuracy in security detection of electric vehicle charging piles.

[0004] The above contents are only used to assist in understanding the technical solution of the present application and do not constitute an admission that the above contents are prior art. Summary of the invention

[0005] The main purpose of this application is to provide a control method, device and storage medium for an electric vehicle charging security system, aiming to solve the technical problem that smoke alarms are easily affected by dust, air humidity, air quality, etc. in outdoor environments, and are easily triggered by mistake, causing unnecessary waste of manpower and material resources, while also having low security detection accuracy for electric vehicle charging piles.

[0006] To achieve the above-mentioned purpose, the present application provides a control method for an electric vehicle charging security system, the method comprising the following steps: receiving the charging pile temperature sent by a temperature sensor; when the charging pile temperature is greater than a preset temperature warning threshold, sending a data acquisition instruction to an early warning camera device corresponding to the temperature sensor, wherein the early warning camera device captures a picture of the charging pile according to the data acquisition instruction, and uploads the captured picture of the charging pile to a server; receiving the picture of the charging pile captured by the early warning camera device and identifying it, and determining the temperature inspection result of the charging pile according to the identification result.

[0007] In one embodiment, when the temperature of the charging pile is greater than a preset temperature warning threshold, the step of sending a data acquisition instruction to the warning camera device corresponding to the temperature sensor includes: When the temperature of the charging pile is greater than the preset temperature warning threshold, determining the location information and number of the charging pile corresponding to the temperature sensor; Determine the early warning camera device based on the number, and determine the relative position of the charging pile in the detection picture of the early warning camera device according to the position information; Determining a control parameter based on the relative position and the image quality of the detection image; The data acquisition instruction is adjusted based on the control parameter, and the data acquisition instruction is sent to the early warning camera device to focus the detection image on the charging pile.

[0008] In one embodiment, after the step of adjusting the data acquisition instruction based on the control parameter and sending the data acquisition instruction to the early warning camera device to focus the detection screen on the charging pile, the method further includes: adjusting the data collection angle of the early warning camera device based on the position information; Receive the data acquisition angle fed back by the early warning camera device, and adjust the relative posture to update the data acquisition instruction.

[0009] In one embodiment, before the step of determining the early warning camera device based on the number and determining the relative position of the charging pile in the detection picture of the early warning camera device according to the position information, the method further includes: Based on the charging pile number, disconnect the current charging order of the charging pile; Query the user's reserved number and registration information based on the order number; An early warning message is sent to the user corresponding to the reserved number, and compensation materials are generated according to the registration information, wherein the compensation materials include the cause of the accident and the compensation plan.

[0010] In one embodiment, after the step of sending a data acquisition instruction to the warning camera device corresponding to the temperature sensor when the temperature of the charging pile is greater than a preset temperature warning threshold, the method further includes: Determine the communication mode between the charging pile and the early warning camera device according to the communication device built into the charging pile, wherein the communication mode includes wired connection, wireless pairing and cloud communication; Encapsulating the data acquisition instruction into a corresponding target format based on the communication method; The data collection instruction in the target format is sent to the early warning camera device.

[0011] In one embodiment, the step of receiving and identifying the charging pile image captured by the early warning camera device, and determining the temperature inspection result of the charging pile according to the identification result includes: Receiving the charging pile picture, identifying pixels on the charging pile picture, and determining the RGB value of a single pixel; Based on the RGB value, the temperature value of the charging pile image is calculated by a preset conversion formula to obtain a temperature value change graph; The temperature inspection result is determined according to the temperature value variation diagram.

[0012] In one embodiment, after the step of determining the temperature inspection result according to the temperature value variation graph, the method further includes: Divide the temperature value change graph based on a preset threshold value, and determine an impact area where the temperature value is greater than the preset threshold value; The charging piles in the affected area are powered off.

[0013] In one embodiment, after the step of receiving and identifying the charging pile image captured by the early warning camera device, and determining the temperature inspection result of the charging pile according to the identification result, the method further includes: Determine a cooling device corresponding to the charging pile based on the location information and number of the charging pile; The charging pile is cooled by the cooling device, and it is determined that the temperature of the charging pile is less than the temperature warning threshold.

[0014] In addition, to achieve the above-mentioned purpose, the present application also provides a control device for an electric vehicle charging safety system, the device comprising: a memory, a processor, and a computer program stored on the memory and executable on the processor, the computer program being configured to implement the steps of the control method for the electric vehicle charging safety system as described above.

[0015] In addition, to achieve the above-mentioned purpose, the present application also provides a storage medium, which is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by the processor, the steps of the control method of the electric vehicle charging security system as described above are implemented.

[0016] One or more technical solutions proposed in the present application have at least the following technical effects: by receiving real-time temperature data of the charging pile from the temperature sensor, when it is detected that the temperature exceeds the preset temperature warning threshold, the present application can automatically send a data acquisition instruction to the associated warning camera device, and then the warning camera device captures the image of the charging pile according to the data acquisition instruction, and uploads these images to the server, which then receives and recognizes these images to determine the temperature inspection result of the charging pile, thereby achieving an accurate response to the abnormal temperature of the charging pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] Figure 1 This is a flow chart of the first embodiment of the control method of the electric vehicle charging safety system of the present application; Figure 2 This is a flow chart of a second embodiment of a control method for an electric vehicle charging safety system of the present application; Figure 3 This is a flow chart of a third embodiment of a control method for an electric vehicle charging safety system of the present application; Figure 4 This is a flow chart of a fourth embodiment of a control method for an electric vehicle charging safety system of the present application; Figure 5 This is a flow chart of a fifth embodiment of a control method for an electric vehicle charging safety system of the present application; Figure 6 This is a flow chart of a sixth embodiment of a control method for an electric vehicle charging safety system of the present application; Figure 7 This is a flow chart of the seventh embodiment of the control method of the electric vehicle charging safety system of the present application; Figure 8 It is a structural schematic diagram of a control device of an electric vehicle charging security system in a hardware operating environment involved in an embodiment of the present application.

[0020] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0021] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0022] Electric vehicle charging piles are usually installed in open-air outdoor carports, and the charging piles are detected simply by hanging smoke alarms at the charging pile scenes, which trigger automatic alarms when the smoke alarm detects that the concentration is too high.

[0023] However, smoke alarms under open-air carports are easily affected by the environment. On rainy days, dust stirred up by rain fills the air, which reduces the smoke alarm's sensitivity to smoke detection of charging piles. In windy weather, the smoke alarm is suspended directly above the charging pile, which reduces the smoke detection efficiency. In hot weather, the charging pile itself will generate a certain amount of heat when working. If the charging pile works for a long time and maintains a high temperature, the smoke alarm will easily cause damage to its internal structure, thereby reducing the detection efficiency of electric vehicle security.

[0024] In order to solve the above-mentioned defects existing in the related art, the embodiment of the present application proposes a control method for an electric vehicle charging security system, which receives the real-time temperature data of the charging pile from the temperature sensor, and sends a data acquisition instruction to the associated early warning camera device when it detects that the temperature exceeds the preset temperature warning threshold. The early warning camera device then captures the image of the charging pile according to the data acquisition instruction and uploads these images to the server. The server then receives and recognizes these images to determine the temperature inspection results of the charging pile, and realizes an accurate response to the abnormal temperature of the charging pile.

[0025] In order to better understand the above technical solution, exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art.

[0026] Based on this, the present application embodiment provides a control method for an electric vehicle charging security system, referring to Figure 1 , Figure 1 This is a flow chart of the first embodiment of the control method of the electric vehicle charging safety system of the present application.

[0027] In this embodiment, the control method of the electric vehicle charging security system includes steps S100 to S300: Step S100: receiving the charging pile temperature sent by the temperature sensor.

[0028] It should be noted that the execution subject of this embodiment can be the control system of the electric vehicle charging security system, or it can be a computing service device with data processing, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or an electronic device that can realize the above functions, etc. This embodiment does not specifically limit this. The following takes the control system of the electric vehicle charging security system as an example (hereinafter referred to as the "system") to illustrate this embodiment and the following embodiments.

[0029] The temperature sensor monitors the real-time temperature of the charging pile in real time and sends the monitored temperature data to the system, which will receive the temperature data.

[0030] As an optional solution for using a temperature sensor to monitor the real-time temperature of a charging pile in real time, a thermistor is set around the charging pile, and the temperature is calculated by measuring the change in the resistance value of the thermistor based on the characteristic that the resistance of the thermistor changes with temperature.

[0031] For example, an NTC thermistor has a resistance of 10kΩ at 25°C and a B value of 3500K. The B value is a material constant used to describe the resistance-temperature characteristics of the NTC thermistor. The resistance value of the NTC thermistor at an unknown temperature is measured by a multimeter. If the magnetic resistance value measured at this time is 5kΩ, the relationship between resistance and temperature shows that: .

[0032] Where R is the resistance value at the current temperature (Ω), is the resistance value (Ω) at a reference temperature (e.g. 25°C), B is the B value (K), and T is the temperature to be calculated (°C).

[0033] Step S200, when the temperature of the charging pile is greater than a preset temperature warning threshold, a data acquisition instruction is sent to the warning camera device corresponding to the temperature sensor, wherein the warning camera device captures the charging pile according to the data acquisition instruction and uploads the captured charging pile image to the server.

[0034] It should be noted that the preset temperature warning threshold refers to a preset temperature value. When the temperature value detected by the charging pile is greater than this value, the system recognizes that the charging pile is in an overheated state and needs to be warned. The warning camera equipment refers to the camera equipment installed around the charging pile, including a camera and related image capture technology, which is used to capture the real-time image of the charging pile when the temperature warning threshold is triggered. The data acquisition instruction refers to the instruction sent by the system to the warning camera equipment. The instruction includes the action of controlling the warning camera equipment to capture and some parameters of the captured image. Capturing is the process of quickly capturing an image at a certain moment or in a certain state.

[0035] The system receives the real-time temperature data of the charging pile transmitted by the temperature sensor, compares the real-time temperature data of the charging pile with the preset temperature warning threshold, and when this threshold is exceeded, the system triggers the warning condition. After receiving the detection request for the high-temperature warning device, the system queries the mapping relationship table between the charging pile and the corresponding warning camera device to determine the associated warning camera device. Subsequently, the system transmits data collection instructions to these warning cameras through wired or wireless communication methods.

[0036] When the real-time temperature does not exceed the temperature warning threshold, the temperature sensor continuously monitors the real-time temperature of the charging pile and feeds back the collected real-time temperature data to the system to ensure a high response rate for detecting abnormalities.

[0037] As an optional solution for a temperature sensor to transmit temperature data to the charging pile mainboard, each temperature sensor is connected to the IO communication port on the detection board via a wired method to transmit the temperature data to the system in real time. It should be noted that the independent temperature detection board is built into the charging pile chassis and can use 433 or 485 wired methods to communicate with the charging pile mainboard.

[0038] For example, each temperature sensor is directly connected to the IO communication port of the detection board through a dedicated cable, and the detection board communicates with the charging pile main board through the RS-485 bus. The RS-485 converter on the main board converts the 485 signal into a signal that the main board can process, and then the detection board transmits the temperature data to the charging pile main board.

[0039] As another optional solution for the temperature sensor to transmit temperature data to the charging pile mainboard, each temperature sensor is connected to the IO communication port on the charging pile mainboard through a wired method to realize real-time transmission of temperature data.

[0040] Exemplarily, a digital temperature sensor is selected, which may be DS18B20, a digital temperature sensor that communicates with the charging pile mainboard via a single bus protocol.

[0041] As an optional solution for sending data collection instructions to the early warning camera device, when the temperature data transmitted by the temperature sensor is received, the temperature data is first converted into degrees Celsius. If the temperature exceeds the preset temperature warning threshold, the system sends a data collection instruction to the early warning camera device via wired means.

[0042] Step S300, receiving and identifying the charging pile image captured by the early warning camera device, and determining the temperature inspection result of the charging pile according to the identification result.

[0043] As an optional implementation scheme for determining the temperature inspection result by identifying the charging pile image, the charging pile image transmitted by the early warning camera device is received, the temperature feature in the charging pile image is identified, and the temperature feature is extracted. Based on the extracted temperature feature and combined with a preset temperature range or threshold, the temperature inspection result of the charging pile is judged. If the temperature feature in the charging pile area shows that the temperature is too high, the temperature inspection result is judged to be unqualified.

[0044] Exemplarily, the area of ​​the charging pile is located in the picture using image recognition technology, and the temperature characteristics of the charging pile area are extracted through color analysis. The temperature characteristics of the charging pile area are displayed in red, and red usually represents high temperature in infrared thermal imaging. Then, based on the extracted temperature characteristics and the preset high temperature threshold, for example, 60°C, the temperature inspection result of the charging pile is judged. Since the temperature of the charging pile area is displayed as high temperature (red) and the temperature exceeds the preset high temperature threshold, it is judged that the temperature inspection result is unqualified and there is a warning risk.

[0045] This embodiment provides a control method for an electric vehicle charging safety system, which monitors the temperature of the charging pile in real time. Once the temperature exceeds the safety threshold, the early warning camera associated with the temperature sensor is automatically activated to take a snapshot of the charging pile on site and upload the image data to the server. The server then analyzes these images and determines the actual temperature state of the charging pile using image recognition technology to ensure charging safety and timely respond to overheating situations, thereby achieving accurate monitoring of the charging pile temperature.

[0046] Based on the first embodiment, the second embodiment of the present application provides a control method for an electric vehicle charging security system, referring to Figure 2 , Figure 2 This is a flow chart of the second embodiment of the control method of the electric vehicle charging security system of the present application, step S200 includes steps S210 to S240: Step S210, when the temperature of the charging pile is greater than the preset temperature warning threshold, determine the location information and number of the charging pile corresponding to the temperature sensor.

[0047] It should be noted that the temperature sensor is assigned a database number when it is installed. The number can be a physical tag or an electronic tag. For example, the electronic tag can be an RFID. The location information refers to the location description of the charging pile, including floor information, area information, and number information. For example, 2-B-5 uses "-" as a separator. The first block of information indicates the underground floor -2nd floor, the second block of information indicates area B on this floor, and the third block of information indicates charging pile No. 5 in this area. In particular, different situations correspond to different identifiers. The location information is used to identify the specific location of the charging pile. The specific location information is not limited here.

[0048] When the system receives temperature data transmitted by the temperature sensor, if it detects that the temperature of the charging pile is greater than the preset temperature warning threshold, the temperature sensor is a built-in device of the charging pile. Therefore, the location information and number of the charging pile can be determined through the temperature sensor.

[0049] For example, the system reads the temperature data of charging piles 1 to 10 in real time. For example, if the temperature of charging pile 1 is 68°C and the temperatures of the other charging piles are all below 60°C, the system detects that the temperature of charging pile 1 exceeds 60°C and immediately triggers a high temperature warning. First, the location information of the corresponding charging pile needs to be queried, which is the second charging pile in the first row of area A of the charging station.

[0050] Step S220: determining the early warning camera device based on the number, and determining the relative position of the charging pile in the detection picture of the early warning camera device according to the position information.

[0051] It should be noted that relative posture refers to the description of the position and posture of another location in space by the early warning camera. After determining the relative position of the early warning camera, the position of the charging pile in the detection picture of the early warning camera is determined to ensure that the early warning camera captures a more complete picture of the charging pile.

[0052] The system calculates the relative position of the charging pile in the camera detection screen based on the location information of the charging pile and the layout of the early warning camera equipment.

[0053] As an optional method for calculating relative posture, first obtain the location information of the charging pile, including the latitude and longitude coordinates of the charging pile, obtain the layout information of the early warning camera, including the installation position and focal length of the early warning camera, and then convert the location information of the charging pile from the geographic coordinate system to the local coordinate system where the camera is located, and then use the projection change to map the position of the charging pile in the local coordinate system onto the detection screen of the early warning camera. In the detection screen of the camera, the outline or feature points of the charging pile are identified by image recognition technology, the position of the outline or feature points of the charging pile in the screen is analyzed, and the relative posture of the charging pile relative to the center of the screen or other reference points is calculated.

[0054] Exemplarily, the location information of the charging pile is ( , , ), which represents the three-dimensional coordinates of the charging pile in the geographic coordinate system, and the layout information of the early warning camera equipment includes the installation location ( , , ) and focal length f, and then convert the location information of the charging pile from the geographic coordinate system to the local coordinate system of the camera device according to the angle deviation between the geographic coordinate system and the local coordinate system of the camera device, and obtain ( ), by analyzing the position of the contour in the picture, the offset of the charging pile relative to the center of the picture is calculated ( ), thereby calculating the relative position of the charging pile in the detection image of the early warning camera equipment.

[0055] Optionally, according to the local coordinate system coordinates ( ) is projected onto the detection screen of the camera device, and the offset of the charging pile relative to the center of the screen is calculated ( ) and the rotation angle First, the coordinates in the local coordinate system are converted into normalized coordinates, and the projection transformation is performed through the internal parameter matrix K of the camera device, including the focal length f and the optical center position. The coordinates projected onto the detection screen ( , v): .

[0056] Among them, the internal parameter matrix K has the following form: .

[0057] in and are the components of the focal length in the x and y directions, and are the coordinates of the optical center.

[0058] From this, the offset can be calculated ( ) by transforming the projection coordinates ( , v) and the center coordinates of the screen ( ) are subtracted from each other.

[0059] Step S230: determining control parameters of the early warning camera device based on the relative posture and the image quality of the detection image.

[0060] It should be noted that picture quality refers to visual quality indicators such as image clarity, contrast, color accuracy, etc., and control parameters are parameters used to guide and adjust the working status of the early warning camera equipment, including focal length, exposure settings, gain, white balance, zoom ratio, rotation angle, etc., to ensure that the early warning camera equipment can capture clear and accurate images according to specific needs.

[0061] Based on the evaluation of the image quality of the detected image, the focus parameters are adjusted dynamically. Optionally, the clarity of the image is evaluated by calculating indicators such as edge sharpness and detail retention in the image. The average brightness or brightness distribution in the image is measured to ensure that the image is neither overexposed nor over dark, and the image details and color reproduction are guaranteed to the greatest extent. The brightness difference between the brightest and darkest parts of the image is calculated to evaluate the contrast in the image.

[0062] Furthermore, after determining the relative position of the charging pile and detecting the picture quality of the image, determine the focal length that needs to be adjusted according to the position offset and rotation angle of the charging pile in the image, and the evaluation result of the image clarity; determine the focusing speed according to the time required for the camera device to adjust from the current focal length to the target focal length; in the case of weak light or too dark image, it is necessary to extend the exposure time to increase the brightness of the image, and in the case of strong light or overexposed image, it is necessary to shorten the exposure time to reduce the brightness of the image, so as to determine the control parameters.

[0063] Step S240: adjusting the data acquisition instruction based on the control parameter, and sending the data acquisition instruction to the early warning camera device to focus the detection image on the charging pile.

[0064] After determining the control parameters, the system sends an adjustment instruction to the early warning camera device to adjust its focusing parameters. After receiving the adjusted data acquisition instruction, the early warning camera device performs a focusing operation. Specifically, by adjusting the lens focal length, exposure and other parameters, the detection image is focused on the charging pile.

[0065] As an optional solution to focus the detection image on the charging pile, after receiving the data collection instruction, the early warning camera device extracts the adjustment parameters. The device adjusts the position or shape of the lens inside the lens according to the calculated target focal length, and gradually changes the focal length until the target value is reached. At the same time, the early warning camera device adjusts the light receiving time of the photosensitive element according to the exposure time parameters provided in the data collection instruction.

[0066] Based on the location information of the charging pile, such as the longitude and latitude coordinates or the relative position relative to a fixed point, and the layout information of the early warning camera, such as the installation position and focal length range, the system calculates the relative position of the charging pile in the early warning camera, thereby determining the target focal length that needs to be adjusted. After the early warning camera receives the data acquisition instruction sent by the system, it first starts the focal length adjustment operation. The lens inside the lens moves according to the preset mechanical path to change the focal length. At the same time, according to the current ambient light and the brightness of the charging pile, the exposure time is adjusted to keep the target focal length, picture brightness and contrast moderate.

[0067] The present embodiment provides a control method for an electric vehicle charging security system. When the temperature of a charging pile exceeds a preset temperature warning threshold, the system triggers the position information and number of the temperature sensor that triggers the warning. Then, the corresponding warning camera device is found according to the position information and number, and the relative position and posture of the charging pile in the detection picture of the warning camera device is calculated. Then, the system adjusts the control parameters of the warning camera device according to the relative position and picture quality to ensure the clarity and accuracy of the charging pile image. Then, the adjusted data acquisition instruction is sent to the warning camera device, so that the warning camera device can accurately focus and capture the image of the charging pile that triggers the warning. When the temperature of the charging pile is abnormal, the accuracy can be improved while reducing the hardware cost of the security system.

[0068] Since the system introduced in the second embodiment of the present application is a system used to implement the method of the first embodiment of the present application, based on the method introduced in the first embodiment of the present application, the person skilled in the art can understand the specific structure and deformation of the system, so it is not repeated here. All systems used in the method of the first embodiment of the present application belong to the scope of protection of this application.

[0069] Based on the first embodiment, the third embodiment of the present application provides a control method for an electric vehicle charging security system, referring to Figure 3 , Figure 3 This is a flow chart of the third embodiment of the control method of the electric vehicle charging security system of the present application. After step S240, it also includes steps S241-S242: Step S241: adjusting the data acquisition angle of the early warning camera device based on the position information.

[0070] It should be noted that the data collection angle is the viewing angle of the early warning camera device to capture images, including horizontal and vertical angles.

[0071] As an optional solution for adjusting the data collection angle of the early warning camera device, the data collection angle is adjusted according to the location information of the charging pile and the lens orientation of the initial early warning camera device.

[0072] For example, when determining a charging pile whose temperature data is greater than a preset warning temperature threshold, the orientation of the initial warning camera device is not in the clearest position for the charging pile, and the data acquisition instructions are adjusted to ensure that the target object is located in the center of the image or in the designated monitoring area.

[0073] Step S242, receiving the data acquisition angle fed back by the early warning camera device, and adjusting the relative posture to update the data acquisition instruction.

[0074] After the early warning camera device adjusts the data collection angle, the system receives information about the change in the data collection angle and determines that the relative posture of the charging pile and the detection screen has changed. Therefore, the control parameters are recalculated to update the data collection instruction to ensure that the early warning camera device can focus on the charging pile after receiving the data collection instruction.

[0075] The present embodiment provides a control method for an electric vehicle charging safety system, which ensures that the charging pile always remains in the optimal position of the monitoring screen by dynamically adjusting the data acquisition angle of the early warning camera device. First, the angle of the early warning camera device is adjusted according to the position information of the charging pile, and then the actual acquisition angle fed back by the early warning camera device is received. Based on this information, the relative position of the charging pile in the monitoring screen is further fine-tuned, and the data acquisition instructions are updated to achieve accurate monitoring and image capture of the charging pile, thereby improving the response speed and accuracy of the early warning system.

[0076] Based on the first embodiment, the fourth embodiment of the present application provides a control method for an electric vehicle charging security system, referring to Figure 4 , Figure 4 This is a flow chart of the fourth embodiment of the control method of the electric vehicle charging security system of the present application, before step S200, including steps S170~S190: Step S170: disconnect the current charging order of the charging pile according to the charging pile number.

[0077] Step S180, query the user's reserved number and registration information according to the order number.

[0078] Step S190, sending a warning message to the user corresponding to the reserved number, and generating compensation materials according to the registration information, wherein the compensation materials include the cause of the accident and the compensation plan.

[0079] It should be noted that the charging pile number means that each charging pile is assigned a unique number, which is used to identify and distinguish different charging piles. The early warning information is that when an abnormal situation occurs, a warning signal is sent immediately to alert users; the compensation materials are compensation determined according to the service agreement, including the cause of the accident, compensation plan and corresponding compensation measures.

[0080] Before determining the warning camera device corresponding to the number and the relative position of the charging pile in the detection screen, it is necessary to query the charging order of the charging pile with abnormal temperature value according to the charging pile number, and then determine the owner of the electric vehicle according to the registration information in the charging order, send a prompt message to the owner, and generate specific compensation materials based on the registration information. The compensation materials include analysis of the cause of the abnormality and the estimated compensation amount and handling plan.

[0081] Exemplarily, after detecting a temperature abnormality, the system immediately identifies and disconnects the current charging order based on the charging pile number "C1", and then queries the contact information reserved by the registered user based on the queried charging order, which can be email, text message, reserved number, etc. The system sends a warning text message to the user, and at the same time generates corresponding compensation materials based on the registration information, including the cause of the accident and the compensation plan. The compensation plan can be a free charging coupon or a discount for the next charge. The compensation materials are sent to the management end, and the final compensation plan is determined by human resources and industry and commerce, and then the compensation materials are sent to the user end.

[0082] The present embodiment provides a control method for an electric vehicle charging security system. When an abnormal situation is detected in a charging pile, the system interrupts the current charging order according to the charging pile number, queries the user's reserved number and registration information related to the order, and sends an early warning message to the user to inform them of the charging interruption. At the same time, the system generates compensation materials according to the user's registration information, including the cause of the accident and the compensation plan, so that when any problem occurs during the charging process, the user can receive timely notification and appropriate compensation, thereby ensuring the rights and interests of the user and improving service satisfaction.

[0083] Based on the first embodiment, the fifth embodiment of the present application provides a control method for an electric vehicle charging security system, referring to Figure 5 , Figure 5 This is a flow chart of the fifth embodiment of the control method of the electric vehicle charging security system of the present application. After step S240, steps S250 to S270 are also included: Step S250, determining the communication mode between the charging pile and the warning camera device according to the communication device built into the charging pile, wherein the communication mode includes wired connection, wireless pairing and cloud communication.

[0084] It should be noted that the communication method between the charging pile and the warning camera device is determined by the type and function of the communication device built into the charging pile. The communication method includes but is not limited to wired connection, wireless pairing and cloud communication.

[0085] Specifically, the wired connection is achieved through the built-in 485 wiring port of the temperature control board, and a one-to-one wired connection with the camera with the built-in 485 wiring port; the wireless pairing is achieved through the built-in 433 transmitter of the temperature control board and a one-to-many wireless pairing with the camera with the built-in 433 receiver; the cloud communication is achieved through the temperature control board with a built-in 4G communication module through the cloud platform and the 4G camera.

[0086] Step S260: encapsulate the data acquisition instruction into a corresponding target format based on the communication method.

[0087] Step S270: sending the data collection instruction in the target format to the early warning camera device.

[0088] In the case of multiple different communication methods, the data collection instructions are encapsulated into different data formats. In the case of wired connection, the data collection instructions are encapsulated in binary or specific protocol formats; in the wireless pairing mode, the data collection instructions are encapsulated in specific wireless protocol formats, such as Transmission Control Protocol / Internet Protocol (TCP / IP), User Datagram Protocol (UDP), Hypertext Transfer Protocol (HTTP), etc.; in the case of cloud communication, the data collection instructions are encapsulated in structured data formats such as JavaScript Object Notation (JSON), Extensible Markup Language (XML), etc., and transmitted through HTTP and other protocols. After encapsulating the data collection instructions into the target format, the data collection instructions are sent to the early warning camera device.

[0089] This embodiment provides a control method for an electric vehicle charging security system, which ensures that the charging pile can correctly encapsulate and send data acquisition instructions to the camera device according to the optimal communication method between its own built-in communication equipment and the early warning camera equipment, thereby ensuring the accurate communication and execution of the instructions, so that the early warning camera equipment can adjust the settings or behaviors in time, and can achieve efficient and reliable communication between devices, thereby enhancing the safety monitoring capabilities of the charging pile.

[0090] Based on the first embodiment, the sixth embodiment of the present application provides a control method for an electric vehicle charging security system, referring to Figure 6 , Figure 6 This is a flow chart of Embodiment 6 of the control method of the electric vehicle charging security system of the present application, step S300 includes steps S310 to S330: Step S310, receiving the charging pile picture, identifying pixels on the charging pile picture, and determining the RGB value of a single pixel.

[0091] The image of the charging pile is obtained through the early warning camera equipment, and then the image is digitized to obtain image data. The image data is analyzed and decomposed into individual pixels. Each pixel is represented by a set of numerical values, and the numerical values ​​correspond to color channels, such as RGB. For RGB images, the system separates the RGB color channels of each pixel and processes them into red, green, and blue components respectively. The system reads the RGB value of each pixel in the range of 0 to 255, which represents the intensity of the three colors red, green, and blue, for example (123, 234, 45).

[0092] Step S320, based on the RGB value, calculate the temperature value of the charging pile image through a preset conversion formula to obtain a temperature value change graph.

[0093] Step S330, determining the temperature inspection result according to the temperature value variation diagram.

[0094] After determining the RGB value of the pixel on the image, use the preset conversion formula to map the RGB value of each pixel to the temperature value, calculate the corresponding temperature value based on the RGB value and the conversion formula, and then plot the calculated temperature value on a new image according to its position on the image to generate a temperature value change graph. Analyze the temperature value change graph and identify temperature abnormal areas, such as overheated or overcooled areas.

[0095] Exemplarily, a linear interpolation or polynomial fitting method is used to establish a conversion relationship between RGB values ​​and temperature values, and the temperature values ​​are mapped to the range of 0-255. Image processing techniques, such as Python and OpenCV libraries, are used to read pictures of charging piles and identify the RGB values ​​of each pixel in the picture. For each pixel, a preset conversion formula is applied to convert the RGB value into a temperature value. The calculated temperature value is mapped back to the corresponding position of the image to generate a temperature value change graph, i.e., a heat map. The temperature value change graph is analyzed to determine whether there is an abnormally high temperature area, thereby obtaining a temperature inspection result.

[0096] The present embodiment provides a control method for an electric vehicle charging safety system. By using image processing technology, the RGB value of each pixel is firstly identified from a picture of a charging pile, and then the RGB value is converted into a temperature value using a preset conversion formula to generate a temperature value change graph. Then, the temperature inspection result of the charging pile is analyzed and determined according to the temperature value change graph, so that overheating or other temperature abnormalities can be detected in time to ensure the safe operation of the charging pile.

[0097] Optionally, after step S330, steps S331 to S332 are included: Step S331, dividing the temperature value change graph based on a preset threshold value, and determining an impact area where the temperature value is greater than the preset threshold value.

[0098] Step S332, powering off the charging piles in the affected area.

[0099] According to the temperature value changes in abnormal situations, determine the preset temperature threshold for division, use the preset temperature threshold to divide the temperature value change graph, determine which areas have temperature values ​​exceeding the safety threshold, and cut off the power to the charging piles whose temperature values ​​exceed the safety threshold.

[0100] Exemplarily, the surface of the charging pile is coated with thermosensitive paint, and its color changes with temperature. A camera is used to capture an image of the charging pile, and image processing technology is used to extract the RGB value of each pixel. The RGB value is converted into a temperature value according to a preset conversion formula, and a temperature value change graph is generated. A preset threshold value, such as 35°C, is set as a high temperature warning line. The preset threshold value is used to divide the temperature value change graph, and areas with temperatures exceeding 35°C are identified. When an area is identified where the temperature exceeds the preset threshold value, the system sends a power-off command to the charging pile to stop the charging process to protect the safety of the charging pile and the user.

[0101] The present embodiment provides a control method for an electric vehicle charging safety system. By using image processing technology, the RGB value of each pixel is firstly identified from a picture of a charging pile, and then the RGB value is converted into a temperature value using a preset conversion formula to generate a temperature value change graph. Then, the temperature inspection result of the charging pile is analyzed and determined according to the temperature value change graph, so that overheating or other temperature abnormalities can be detected in time to ensure the safe operation of the charging pile.

[0102] Based on the first embodiment, the seventh embodiment of the present application provides a control method for an electric vehicle charging security system, referring to Figure 7 , Figure 7 This is a flow chart of Embodiment 7 of the control method of the electric vehicle charging security system of the present application. After step S330, steps S340 to S350 are also included: Step S340: Determine a cooling device corresponding to the charging pile based on the location information and number of the charging pile.

[0103] Step S350: Cooling the charging pile by the cooling device to determine whether the temperature of the charging pile is lower than the temperature warning threshold.

[0104] According to the location information and number of the charging pile, the data mapping table in the database is queried to determine the cooling device associated with the charging pile. The system starts the cooling device to reduce the temperature of the charging pile. The temperature of the charging pile is monitored in real time through the temperature sensor. The working state of the cooling device is adjusted according to the feedback control logic to ensure that the temperature of the charging pile is within a safe range, that is, to ensure that the temperature of the charging pile is lower than the temperature warning threshold.

[0105] This embodiment uses a control method for an electric vehicle charging security system to accurately identify and match a corresponding cooling device through the location information and unique number of the charging pile, and then starts the cooling device to cool the charging pile until the temperature of the charging pile drops below a preset temperature warning threshold, ensuring that the charging pile operates within a safe temperature range.

[0106] It should be noted that the above examples are only used to understand the present application and do not constitute a limitation on the control method of the electric vehicle charging safety system of the present application. More simple transformations based on this technical concept are all within the protection scope of the present application.

[0107] The present application provides a control device for an electric vehicle charging safety system, the device comprising: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the control method for the electric vehicle charging safety system in the above-mentioned embodiment one.

[0108] Reference below Figure 8 , which shows a schematic diagram of the structure of the control device of the electric vehicle charging safety system suitable for implementing the embodiment of the present application. The control device of the electric vehicle charging safety system in the embodiment of the present application may include but is not limited to mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions: tablet computers), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 8 The control device of the electric vehicle charging security system shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0109] like Figure 8As shown, the control device of the electric vehicle charging security system may include a processing device 1001 (e.g., a core processor, a graphics processor, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM: Read Only Memory) 1002 or a program loaded from a storage device 1003 to a random access memory (RAM: Random Access Memory) 1004. In RAM1004, various programs and data required for the operation of the control device of the electric vehicle charging security system are also stored. The processing device 1001, ROM1002, and RAM1004 are connected to each other via a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems can be connected to the I / O interface 1006: input devices 1007 including, for example, a touch screen, a touchpad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; output devices 1008 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; storage devices 1003 including, for example, a magnetic tape, a hard disk, etc.; and communication devices 1009. The communication device 1009 can allow the control device of the electric vehicle charging security system to communicate wirelessly or wired with other devices to exchange data. Although the control device of the electric vehicle charging security system with various systems is shown in the figure, it should be understood that it is not required to implement or have all the systems shown. More or fewer systems may be implemented or have alternatively.

[0110] In particular, according to the embodiments disclosed in the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0111] The control device of the electric vehicle charging security system provided by the present application adopts the control method of the electric vehicle charging security system in the above embodiment, which can solve the problem that the smoke alarm is easily affected by dust, air humidity, air quality, etc. in the outdoor environment, and is easy to trigger the alarm by mistake, causing unnecessary waste of manpower and material resources, and has the technical problem of low accuracy of security detection of electric vehicle charging piles. Compared with the prior art, the beneficial effects of the control device of the electric vehicle charging security system provided by the present application are the same as the beneficial effects of the control method of the electric vehicle charging security system provided by the above embodiment, and the other technical features in the control device of the electric vehicle charging security system are the same as the features disclosed in the method of the previous embodiment, which will not be repeated here.

[0112] It should be understood that the various parts disclosed in this application can be implemented by hardware, software, firmware or a combination thereof. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0113] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0114] The present application provides a computer-readable storage medium having computer-readable program instructions (ie, computer programs) stored thereon, and the computer-readable program instructions are used to execute the control method of the electric vehicle charging safety system in the above-mentioned embodiment.

[0115] The computer-readable storage medium provided in the present application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, systems or devices, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM: Random Access Memory), a read-only memory (ROM: Read Only Memory), an erasable programmable read-only memory (EPROM: Erasable Programmable Read Only Memory or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM: CD-Read Only Memory), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program, which may be used by or in combination with an instruction execution system, system or device. The program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency: Radio Frequency), etc., or any suitable combination of the above.

[0116] The above-mentioned computer-readable storage medium may be included in the control device of the electric vehicle charging safety system; or it may exist independently without being assembled into the control device of the electric vehicle charging safety system.

[0117] The computer-readable storage medium carries one or more programs. When the one or more programs are executed by the control device of the electric vehicle charging security system, the control device of the electric vehicle charging security system: receives the charging pile temperature sent by the temperature sensor; when the charging pile temperature is greater than the preset temperature warning threshold, sends a data acquisition instruction to the warning camera device corresponding to the temperature sensor, wherein the warning camera device captures the charging pile according to the data acquisition instruction and uploads the captured charging pile picture to the server; receives the charging pile picture collected by the warning camera device and recognizes it, and determines the temperature inspection result of the charging pile according to the recognition result. The computer program code for performing the operation of the present application can be written in one or more programming languages ​​or a combination thereof, and the programming languages ​​include object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" language or similar programming languages. The program code can be executed completely on the user's computer, partially on the user's computer, as an independent software package, partially on the user's computer and partially on a remote computer, or completely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or it can be connected to an external computer (for example, through the Internet using an Internet service provider).

[0118] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present application. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0119] The modules involved in the embodiments described in this application may be implemented by software or hardware, wherein the name of the module does not constitute a limitation on the unit itself in some cases.

[0120] The readable storage medium provided by the present application is a computer-readable storage medium, which stores computer-readable program instructions (i.e., computer programs) for executing the control method of the above-mentioned electric vehicle charging security system, which can solve the problem that smoke alarms are easily affected by dust, air humidity, air quality, etc. in outdoor environments, and are easily triggered by mistake, causing unnecessary waste of manpower and material resources, while also having the technical problem of low accuracy of electric vehicle charging pile security detection. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided by the present application are the same as the beneficial effects of the control method of the electric vehicle charging security system provided by the above-mentioned embodiment, and will not be repeated here.

[0121] The above descriptions are only some embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A control method for an electric vehicle charging security system, characterized in that: The control method of the electric vehicle charging safety system comprises the following steps: Receive the charging pile temperature sent by the temperature sensor; When the temperature of the charging pile is greater than a preset temperature warning threshold, a data acquisition instruction is sent to the warning camera device corresponding to the temperature sensor, wherein the warning camera device captures the charging pile according to the data acquisition instruction and uploads the captured charging pile image to the server; The image of the charging pile captured by the early warning camera device is received and recognized, and a temperature inspection result of the charging pile is determined according to the recognition result.

2. The control method of the electric vehicle charging security system according to claim 1, characterized in that: When the temperature of the charging pile is greater than a preset temperature warning threshold, the step of sending a data acquisition instruction to the warning camera device corresponding to the temperature sensor includes: When the temperature of the charging pile is greater than the preset temperature warning threshold, determining the location information and number of the charging pile corresponding to the temperature sensor; Determine the early warning camera device based on the number, and determine the relative position of the charging pile in the detection picture of the early warning camera device according to the position information; Determining a control parameter based on the relative position and the image quality of the detection image; The data acquisition instruction is adjusted based on the control parameter, and the data acquisition instruction is sent to the early warning camera device to focus the detection image on the charging pile.

3. The control method of the electric vehicle charging security system according to claim 2, characterized in that: After the step of adjusting the data acquisition instruction based on the control parameter and sending the data acquisition instruction to the early warning camera device to focus the detection screen on the charging pile, the method further includes: adjusting the data collection angle of the early warning camera device based on the position information; Receive the data acquisition angle fed back by the early warning camera device, and adjust the relative posture to update the data acquisition instruction.

4. The control method of the electric vehicle charging security system according to claim 2, characterized in that: Before the step of determining the early warning camera device based on the number and determining the relative position of the charging pile in the detection picture of the early warning camera device according to the position information, the method further includes: Disconnect the current charging order of the charging pile based on the charging pile number; Query the user's reserved number and registration information based on the order number; An early warning message is sent to the user corresponding to the reserved number, and compensation materials are generated according to the registration information, wherein the compensation materials include the cause of the accident and the compensation plan.

5. The control method of the electric vehicle charging security system according to claim 1, characterized in that: After the step of sending a data acquisition instruction to the warning camera device corresponding to the temperature sensor when the temperature of the charging pile is greater than a preset temperature warning threshold, the method further includes: Determine the communication mode between the charging pile and the early warning camera device according to the communication device built into the charging pile, wherein the communication mode includes wired connection, wireless pairing and cloud communication; Encapsulating the data acquisition instruction into a corresponding target format based on the communication method; The data collection instruction in the target format is sent to the early warning camera device.

6. The control method of the electric vehicle charging security system according to claim 1, characterized in that: The step of receiving and identifying the charging pile image collected by the early warning camera device, and determining the temperature inspection result of the charging pile according to the identification result, comprises: Receiving the charging pile picture, identifying pixels on the charging pile picture, and determining the RGB value of a single pixel; Based on the RGB value, the temperature value of the charging pile image is calculated by a preset conversion formula to obtain a temperature value change graph; The temperature inspection result is determined according to the temperature value variation diagram.

7. The control method of the electric vehicle charging security system according to claim 6, characterized in that: After the step of determining the temperature test result according to the temperature value change graph, the method further includes: Divide the temperature value change graph based on a preset threshold value, and determine an impact area where the temperature value is greater than the preset threshold value; The charging piles in the affected area are powered off.

8. The control method of the electric vehicle charging security system according to claim 1, characterized in that: After the step of receiving and identifying the charging pile image captured by the early warning camera device, and determining the temperature inspection result of the charging pile according to the identification result, the method further includes: Determine a cooling device corresponding to the charging pile based on the location information and number of the charging pile; The charging pile is cooled by the cooling device, and it is determined that the temperature of the charging pile is less than the temperature warning threshold.

9. A control device for an electric vehicle charging security system, characterized in that: The device comprises: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the control method of the electric vehicle charging safety system according to any one of claims 1 to 8.

10. A storage medium, characterized in that: The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the control method of the electric vehicle charging safety system according to any one of claims 1 to 8 are implemented.

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