A method, system, electronic device and storage medium for monitoring operation of motor vehicles in a field

Abstract

The present invention proposes a method, device, electronic device and storage medium for monitoring the operation of motor vehicles on a site. The present invention improves the efficiency and accuracy of vehicle management on a site by integrating real-time data collection and intelligent scheduling functions, and solves the problem that traditional detection methods in the prior art lack the ability to obtain real-time data and efficient information processing and feedback mechanisms, and vehicles are prone to route deviations and delays.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a method, system, electronic equipment and storage medium for monitoring the operation of motor vehicles on a site. Background Art

[0002] Currently, existing on-site motor vehicle operation monitoring technologies usually rely on manual recording and inaccurate vehicle tracking methods, which may lead to information lag, improper scheduling, and inefficient on-site operations. Specifically, due to the lack of real-time data acquisition capabilities and efficient information processing and feedback mechanisms, vehicles are prone to route deviations and delays, and the ability to identify and handle these problems in a timely manner is poor, thus affecting the coordination of the overall operation process and resource utilization efficiency. In addition, the driver's response to route deviations or delays is usually not timely and accurate, further affecting the overall effectiveness of the site management system. Summary of the invention

[0003] In view of the technical problems existing in the above background technology, the present invention proposes a method, system, electronic device and storage medium for monitoring the operation of motor vehicles in a field, and the technical solutions adopted are as follows:

[0004] A method for monitoring the operation of motor vehicles in a field, the method comprising:

[0005] S1: The central management system records the license plate number, entry time, destination and workload of the motor vehicles entering the site, and plans the driving route and arrival time of the motor vehicles according to the entry time and destination, and plans the working time of the motor vehicles in the site according to the workload;

[0006] S2: After the vehicle identification system at the site entrance recognizes that a motor vehicle requests to pass through, it obtains the license plate number of the motor vehicle and uploads the license plate number to the central management system. After receiving the license plate number information of the motor vehicle, the central management system verifies it with the recorded information and performs corresponding operations according to the verification result;

[0007] S3: After the motor vehicle enters the field, multiple electromagnetic sensors on the ground in the field obtain the motor vehicle's driving speed, driving direction and the time when it passes a certain electromagnetic sensor in real time, and present the driving trajectory of the motor vehicle in real time based on the driving speed, driving direction and the time when it passes a certain electromagnetic sensor;

[0008] S4: comparing the driving trajectory of the motor vehicle with the planned driving route, and when the driving trajectory deviates from the planned driving route, issuing a warning and prompting the driver to drive to the correct track;

[0009] S5: After the motor vehicle arrives at the destination, the actual arrival time is recorded and uploaded to the central management system. The central management system compares the actual arrival time with the planned arrival time to obtain the delay time. The central management system delays the scheduled entry time of subsequent motor vehicles according to the delay time, and notifies the drivers of subsequent vehicles of the delay information.

[0010] Preferably, the workload of S1 includes: , where r represents the workload of the motor vehicle, n represents the number of tasks that the motor vehicle needs to complete, and t represents the time required for the motor vehicle to complete a single task.

[0011] Preferably, the S2 includes:

[0012] S21: When the vehicle recognition system detects that a vehicle has entered the recognition area, an image of the license plate number of the motor vehicle is obtained through a camera, and a correct license plate number in the image is recognized through an image processing system;

[0013] S22: After the central management system receives the uploaded license plate number information, it verifies the license plate number information with the data recorded in the entry library. The verification content includes the license plate number consistency information and the motor vehicle reservation timeout information. When the verification content is consistent with the data recorded in the entry library, the central management system issues an instruction to allow the motor vehicle to enter, and the site entrance access control system is released. When the verification content is inconsistent with the data recorded in the entry library, the central management system issues an instruction to refuse the motor vehicle from entering, and at the same time records the motor vehicle's violation information and transmits the violation information to the management personnel.

[0014] Preferably, S3 includes:

[0015] S31: After a motor vehicle enters the field, when the electromagnetic sensor senses the vehicle, the timestamp of each sensor passing through the vehicle during its driving process is collected in real time, and the time data collected by the electromagnetic sensor is uploaded to the central management system;

[0016] S32: After receiving the time data, the central management system calculates the speed of the motor vehicle between adjacent sensors, analyzes the position of the motor vehicle when it passes through different electromagnetic sensors, determines the driving direction of the motor vehicle, and obtains the driving trajectory of the motor vehicle based on the driving speed, driving direction and time data, and displays the driving route of the motor vehicle in real time through a visualization system.

[0017] Preferably, the S4 includes:

[0018] S41: Compare the current driving position of the motor vehicle with the nearest path point on the planned route, calculate the deviation between the current driving position of the motor vehicle and the planned route, the deviation represents the lateral distance between the current driving position of the motor vehicle and the planned route, obtain the deviation coefficient, when the deviation coefficient exceeds the set threshold, the central management system determines that the motor vehicle has deviated from the planned route, and the early warning system issues an alarm to warn the driver that the motor vehicle has deviated from the planned route;

[0019] S42: The central management system re-plans the route, sends the guidance route and the correction direction to the navigation system of the motor vehicle, and monitors the motor vehicle to ensure that the motor vehicle travels according to the re-planned route.

[0020] Preferably, the S5 includes:

[0021] S51: When the motor vehicle arrives at the destination, the geomagnetic sensor at the destination obtains the driving speed of the motor vehicle, and after confirming that the driving speed is 0, the confirmation information is uploaded to the central management system, and the central management system changes the state of the motor vehicle from the driving state to the mission state, and records the actual arrival time of the motor vehicle;

[0022] S52: Compare the actual arrival time with the planned arrival time to obtain the delay time, wherein the delay time = actual arrival leave - planned arrival time. When the delay time ≤ 0, it indicates that the working time of the motor vehicle is within the planned time. When the delay time ≥ 0, it indicates that the working time of the motor vehicle is outside the planned time. The central management system dynamically adjusts the scheduled entry time of the subsequent motor vehicles according to the delay time, and notifies the drivers of the subsequent vehicles entering the site of the delay information.

[0023] A motor vehicle operation monitoring system in a field, the system comprising:

[0024] Pre-planning system: The central management system records the license plate number, entry time, destination and workload of the motor vehicles entering the site, and plans the driving route and arrival time of the motor vehicles based on the entry time and destination, and plans the working time of the motor vehicles in the site based on the workload;

[0025] Vehicle identification system: After the vehicle identification system at the site entrance identifies a motor vehicle requesting to pass through, it obtains the license plate number of the motor vehicle and uploads the license plate number to the central management system. After receiving the license plate number information of the motor vehicle, the central management system verifies it with the recorded information and performs corresponding operations based on the verification results;

[0026] Geomagnetic induction system: After a motor vehicle enters the field, multiple electromagnetic sensors on the ground inside the field obtain the motor vehicle's speed, direction and the time when it passes a certain electromagnetic sensor in real time, and present the motor vehicle's driving trajectory in real time based on the speed, direction and the time when it passes a certain electromagnetic sensor;

[0027] Driving route correction system: compares the driving trajectory of the motor vehicle with the planned driving route. When the driving trajectory deviates from the planned driving route, a warning is issued to prompt the driver to drive to the correct track;

[0028] Dynamic adjustment system for appointment time: After a motor vehicle arrives at its destination, the actual arrival time is recorded and uploaded to the central management system. The central management system compares the actual arrival time with the planned arrival time to obtain the delay time. The central management system delays the appointment entry time of subsequent motor vehicles based on the delay time and notifies the drivers of subsequent vehicles of the delay information.

[0029] Preferably, the vehicle identification system comprises:

[0030] Image processing system: When the vehicle recognition system detects that a vehicle has entered the recognition area, the camera obtains the image of the license plate number of the motor vehicle, and the image processing system recognizes the correct license plate number in the image;

[0031] Information verification system: After the central management system receives the uploaded license plate number information, it verifies the license plate number information with the data recorded in the entry library. The verification content includes the license plate number consistency information and the motor vehicle reservation timeout information. When the verification content is consistent with the data recorded in the entry library, the central management system issues an instruction to allow the motor vehicle to enter, and the site entrance access control system is released. When the verification content is inconsistent with the data recorded in the entry library, the central management system issues an instruction to refuse the motor vehicle from entering, and at the same time records the motor vehicle's violation information and transmits the violation information to the management personnel.

[0032] Beneficial effects of the present invention: The on-site motor vehicle operation monitoring method improves the efficiency and accuracy of on-site vehicle management by integrating real-time data collection and intelligent scheduling functions. By using electromagnetic sensors to monitor the vehicle's driving trajectory in real time and compare it with the planned route, deviations can be quickly identified and corrected immediately to ensure that the vehicle travels along the optimal path. In addition, the system can adjust the entry arrangement of subsequent vehicles according to the actual arrival time, reduce delays and waste of resources, and improve the coordination and responsiveness of the overall operation of the site. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is the on-site motor vehicle operation monitoring method described in the present invention. DETAILED DESCRIPTION

[0034] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0035] One embodiment of the present invention provides a method for monitoring the operation of motor vehicles in a field, the method comprising:

[0036] S1: The central management system records the license plate number, entry time, destination and workload of the motor vehicles entering the site, and plans the driving route and arrival time of the motor vehicles according to the entry time and destination, and plans the working time of the motor vehicles in the site according to the workload;

[0037] S2: After the vehicle identification system at the site entrance recognizes that a motor vehicle requests to pass through, it obtains the license plate number of the motor vehicle and uploads the license plate number to the central management system. After receiving the license plate number information of the motor vehicle, the central management system verifies it with the recorded information and performs corresponding operations according to the verification result;

[0038] S3: After the motor vehicle enters the field, multiple electromagnetic sensors on the ground in the field obtain the motor vehicle's driving speed, driving direction and the time when it passes a certain electromagnetic sensor in real time, and present the driving trajectory of the motor vehicle in real time based on the driving speed, driving direction and the time when it passes a certain electromagnetic sensor;

[0039] S4: comparing the driving trajectory of the motor vehicle with the planned driving route, and when the driving trajectory deviates from the planned driving route, issuing a warning and prompting the driver to drive to the correct track;

[0040] S5: After the motor vehicle arrives at the destination, the actual arrival time is recorded and uploaded to the central management system. The central management system compares the actual arrival time with the planned arrival time to obtain the delay time. The central management system delays the scheduled entry time of subsequent motor vehicles according to the delay time, and notifies the drivers of subsequent vehicles of the delay information.

[0041] The working principle and effect of the above technical solution are as follows: the central management system records key information when the vehicle enters the site, including the license plate number, entry time, destination and expected workload. The system uses this information to plan the driving route and estimated arrival time of each vehicle, while taking into account the time required for the vehicle to operate in the site. When the vehicle enters the site, the recognition system at the entrance obtains the vehicle's license plate number through a camera or sensor. The license plate number is uploaded to the central management system, and the system compares the vehicle's identification information with the pre-recorded information to make a decision on admission or rejection. The verified information includes appointment consistency and timeout. After entering the site, the electromagnetic sensors arranged on the ground are responsible for capturing the vehicle's dynamic information, including speed, direction and time information. With this data, the system generates and displays the vehicle's real-time driving trajectory internally. The actual driving trajectory of the vehicle is compared with the previously planned route. If the deviation exceeds the set threshold, the system activates the warning function to prompt the driver to correct the route in time to ensure that the vehicle always travels along a safe and optimized path. When the vehicle arrives at the destination, the system records the actual arrival time and compares it with the planned time, calculates the delay time, and the delay time is further used to adjust the entry plan of subsequent vehicles to ensure a smooth overall process. The advantages of the on-site motor vehicle operation monitoring method include improving the accuracy and efficiency of vehicle management. By recording and monitoring the dynamic behavior of vehicles in real time, the central management system can effectively plan and regulate the vehicle's driving route and work arrangements, reducing problems caused by route deviation or delays. The system can instantly warn and notify the driver to adjust the driving route, and dynamically adjust the deviation between the planned time and the actual arrival time, thereby optimizing the overall site operation and reducing congestion and waiting time.

[0042] In one embodiment of the present invention, S2 includes:

[0043] S21: When the vehicle recognition system detects that a vehicle has entered the recognition area, an image of the license plate number of the motor vehicle is obtained through a camera, and a correct license plate number in the image is recognized through an image processing system;

[0044] S22: After the central management system receives the uploaded license plate number information, it verifies the license plate number information with the data recorded in the entry library. The verification content includes the license plate number consistency information and the motor vehicle reservation timeout information. When the verification content is consistent with the data recorded in the entry library, the central management system issues an instruction to allow the motor vehicle to enter, and the site entrance access control system is released. When the verification content is inconsistent with the data recorded in the entry library, the central management system issues an instruction to refuse the motor vehicle from entering, and at the same time records the motor vehicle's violation information and transmits the violation information to the management personnel.

[0045] The working principle and effect of the above technical solution are as follows: When a motor vehicle approaches the entrance of the site, the vehicle identification system installed at the entrance detects the presence of the vehicle. Once the vehicle is detected, the camera starts and captures the license plate image of the vehicle. The information of the license plate number in the image is automatically identified and parsed by using an image processing system (OCR system). The system uploads the identified license plate number information to the central management system. After receiving the license plate number, the central management system verifies the information. This includes comparing it with the pre-entered data to confirm the consistency of the license plate number and whether the vehicle has applied for and reserved the entry time within the specified range. If the license plate number completely matches the reservation information and the reservation time is within the allowed range, the central management system sends an instruction to release the access control system at the entrance and allow the vehicle to enter the site. If the information does not match, or the vehicle is not within the reservation time, the central management system immediately issues an instruction to refuse entry. While refusing the vehicle to enter, the system records the violation information related to it. The violation information is automatically transmitted to the management personnel through the system for further inspection and processing. The advantage of this system is that it uses automation technology to improve the security and management efficiency of the site entrance. By capturing and identifying the vehicle's license plate information in real time, combined with the verification and decision-making mechanism of the central management system, it can ensure that only verified vehicles with appropriate permissions can enter the venue. This reduces the risk of illegal or unauthorized vehicle entry and effectively maintains the security of the venue. In addition, the automated violation recording and notification function simplifies the supervision work of managers and ensures rapid response and handling of abnormal situations.

[0046] In one embodiment of the present invention, S3 includes:

[0047] S31: After a motor vehicle enters the field, when the electromagnetic sensor senses the vehicle, the timestamp of each sensor passing through the vehicle during its driving process is collected in real time, and the time data collected by the electromagnetic sensor is uploaded to the central management system;

[0048] S32: After receiving the time data, the central management system calculates the speed of the motor vehicle between adjacent sensors, analyzes the position of the motor vehicle when it passes through different electromagnetic sensors, determines the driving direction of the motor vehicle, and obtains the driving trajectory of the motor vehicle based on the driving speed, driving direction and time data, and displays the driving route of the motor vehicle in real time through a visualization system.

[0049] The working principle and effect of the above technical solution are as follows: when a motor vehicle enters the field area and passes through the electromagnetic sensors arranged on the ground, the electromagnetic sensors will sense the passage of the vehicle and activate the time recording function. Each sensor records an accurate timestamp when the vehicle passes. The time data of the sensor is uploaded to the central management system in real time. After receiving the time data from multiple electromagnetic sensors, the central management system first calculates the driving speed of the vehicle between adjacent sensors. The system also analyzes the spatial position of the vehicle when it passes through different sensors to decode the driving direction of the vehicle. Based on the known driving speed and direction, combined with the time series data, the system generates the driving trajectory of the vehicle. Then, the system displays the driving route of the vehicle in real time through visualization tools. This system realizes the accurate tracking of the driving speed, direction and trajectory of the vehicle through the automatic data collection of electromagnetic sensors and the intelligent analysis of the central management system, which not only improves the efficiency of traffic management in the field, ensures that the vehicle runs according to the planned route, and reduces the risk of deviation and misoperation, but also provides intuitive traffic status monitoring through visualization, which helps managers to take quick action when abnormalities occur.

[0050] In one embodiment of the present invention, the S4 includes:

[0051] S41: Compare the current driving position of the motor vehicle with the nearest path point on the planned route, calculate the deviation between the current driving position of the motor vehicle and the planned route, the deviation represents the lateral distance between the current driving position of the motor vehicle and the planned route, obtain the deviation coefficient, when the deviation coefficient exceeds the set threshold, the central management system determines that the motor vehicle has deviated from the planned route, and the early warning system issues an alarm to warn the driver that the motor vehicle has deviated from the planned route;

[0052] S42: The central management system re-plans the route, sends the guidance route and the correction direction to the navigation system of the motor vehicle, and monitors the motor vehicle to ensure that the motor vehicle travels according to the re-planned route.

[0053] And, the deviation coefficient is obtained by the following formula:

[0054] ;

[0055] Wherein, P represents the deviation coefficient, ABC is used to describe the constant coefficient of the straight line of the planned route, x, y represent the position coordinates of the motor vehicle, k represents the deviation weight, and the value range of k is [1, 2], θ represents the angle between the current moving direction of the motor vehicle and the planned route direction, and the value range of θ is [0, 90°), v represents the driving speed of the motor vehicle, Indicates the maximum speed limit in the venue;

[0056] In particular, the driving speed of the motor vehicle is obtained by the following formula:

[0057] ;

[0058] Where D represents the distance between the two electromagnetic sensors, It represents the time difference between the motor vehicle passing two electromagnetic sensors. Indicates the change in electromagnetic field strength when a motor vehicle passes through two electromagnetic sensors. represents the sensitivity coefficient of electric field change, and The unit is second / Tesla;

[0059] When P≤1, it means that the motor vehicle is traveling on the planned route without deviation;

[0060] When P>1, it means that the motor vehicle is not traveling on the planned route. At this time, the central management system determines that the motor vehicle has deviated from the planned route, and the early warning system issues an alarm to warn the driver that the motor vehicle has deviated from the planned route.

[0061] The working principle and effect of the above technical solution are as follows: During the driving process of the vehicle, the central management system continuously monitors the current position of the vehicle and compares it with the nearest path point of the planned path. The system uses these distance data to calculate the deviation, that is, the lateral offset of the current position of the vehicle relative to the planned route. The deviation coefficient is used to quantify this lateral deviation and compare it with the preset threshold. When the deviation coefficient exceeds the set safety threshold, the central management system automatically determines that the vehicle has significantly deviated from the planned route and triggers the early warning system. Once the deviation is confirmed, the central management system immediately proceeds to re-plan a safe and optimal route to guide the vehicle back to the correct driving track. The system uses the latest location information and on-site traffic conditions to calculate a reasonable guidance route and correction direction, and sends these instructions to the vehicle's navigation system. The system continuously monitors whether the vehicle is driving according to the new guidelines during subsequent driving to determine whether the vehicle's driving trajectory has returned to the standard path. This system improves the safety and reliability of vehicle operation through deviation detection and route correction mechanisms. Real-time monitoring of vehicle position and calculation of deviations enable the system to quickly identify any deviation from the planned route and promptly notify the driver through the early warning system, thereby reducing potential accident risks. At the same time, automatic rerouting and providing corrective guidance to the driver not only reduces the impact of human error on the driving path, but also ensures that the vehicle can quickly return to a safe and optimized driving trajectory.

[0062] The real-time position of the motor vehicle is (x, y), which is substituted into the linear equation to form Ax+By+c. The value calculated is the value obtained by substituting the vehicle's current position information into the linear equation. It represents the degree to which the vehicle's point deviates from zero after being substituted into the linear equation. Then, by dividing , normalized to represent the vertical distance of the corresponding straight line, that is, the shortest distance in the geometric sense. tanθ is used to measure the rotation trend of the vehicle, because the tangent function well reflects the increase in deviation in small angle changes. This deviation coefficient formula improves the accuracy and dynamic response capability of vehicle path deviation detection. By comprehensively considering the influence of geometric deviation, directional deviation and speed, it can adjust the deviation evaluation in real time, avoiding system false alarms and safety hazards caused by directional deviation and speed changes.

[0063] In one embodiment of the present invention, S5 includes:

[0064] S51: When the motor vehicle arrives at the destination, the geomagnetic sensor at the destination obtains the driving speed of the motor vehicle, and after confirming that the driving speed is 0, the confirmation information is uploaded to the central management system, and the central management system changes the state of the motor vehicle from the driving state to the mission state, and records the actual arrival time of the motor vehicle;

[0065] S52: Compare the actual arrival time with the planned arrival time to obtain the delay time, wherein the delay time = actual arrival leave - planned arrival time. When the delay time ≤ 0, it indicates that the working time of the motor vehicle is within the planned time. When the delay time ≥ 0, it indicates that the working time of the motor vehicle is outside the planned time. The central management system dynamically adjusts the scheduled entry time of the subsequent motor vehicles according to the delay time, and notifies the drivers of the subsequent vehicles entering the site of the delay information.

[0066] The working principle and effect of the above technical solution are as follows: when a motor vehicle arrives at its destination, the geomagnetic sensor installed at the destination detects the presence of the vehicle and measures its driving speed. The sensor confirms that the vehicle's driving speed is 0, that is, the vehicle has stopped. Subsequently, the confirmation information is uploaded to the central management system. After receiving the stop information, the central management system updates the vehicle's status from "driving status" to "task status". The system compares the recorded actual arrival time with the planned arrival time and calculates the delay time. When the delay time is 0 or a negative number, it means that the vehicle arrives on time or ahead of schedule, and the working time is normal. When the delay time is a positive value, it means that the vehicle's arrival is delayed and has exceeded the planned time limit. The central management system dynamically adjusts the entry time of subsequent vehicle reservations based on the delay time to optimize the overall traffic flow and operation plan of the site, and notifies the adjusted reservation time and the reason for the delay to the subsequent vehicle drivers waiting to enter the site. The tracking and intelligent scheduling adjustment of vehicle arrival information by this system improves the efficiency and flexibility of the overall operation. By automatically identifying the arrival of vehicles at their destinations and adjusting the subsequent arrival schedule in real time, the chain reaction and waiting time caused by vehicle delays can be effectively reduced, ensuring that tasks are executed as planned. In addition, the dynamic management method not only optimizes the use of on-site resources, but also improves the coordination of vehicle scheduling, provides drivers with timely information updates, and enhances the fluidity and adaptability of site operations. In addition, this automated processing reduces the need for manual intervention, reduces the risk of errors, and greatly improves the reliability of the operation process.

[0067] One embodiment of the present invention provides a motor vehicle operation monitoring system in a field, the system comprising:

[0068] Pre-planning system: The central management system records the license plate number, entry time, destination and workload of the motor vehicles entering the site, and plans the driving route and arrival time of the motor vehicles based on the entry time and destination, and plans the working time of the motor vehicles in the site based on the workload;

[0069] Vehicle identification system: After the vehicle identification system at the site entrance identifies a motor vehicle requesting to pass through, it obtains the license plate number of the motor vehicle and uploads the license plate number to the central management system. After receiving the license plate number information of the motor vehicle, the central management system verifies it with the recorded information and performs corresponding operations based on the verification results;

[0070] Geomagnetic induction system: After a motor vehicle enters the field, multiple electromagnetic sensors on the ground inside the field obtain the motor vehicle's speed, direction and the time when it passes a certain electromagnetic sensor in real time, and present the motor vehicle's driving trajectory in real time based on the speed, direction and the time when it passes a certain electromagnetic sensor;

[0071] Driving route correction system: compares the driving trajectory of the motor vehicle with the planned driving route. When the driving trajectory deviates from the planned driving route, a warning is issued to prompt the driver to drive to the correct track;

[0072] Dynamic adjustment system for appointment time: After a motor vehicle arrives at its destination, the actual arrival time is recorded and uploaded to the central management system. The central management system compares the actual arrival time with the planned arrival time to obtain the delay time. The central management system delays the appointment entry time of subsequent motor vehicles based on the delay time and notifies the drivers of subsequent vehicles of the delay information.

[0073] The working principle and effect of the above technical solution are as follows: the central management system records key information when the vehicle enters the site, including the license plate number, entry time, destination and expected workload. The system uses this information to plan the driving route and estimated arrival time of each vehicle, while taking into account the time required for the vehicle to operate in the site. When the vehicle enters the site, the recognition system at the entrance obtains the vehicle's license plate number through a camera or sensor. The license plate number is uploaded to the central management system, and the system compares the vehicle's identification information with the pre-recorded information to make a decision on admission or rejection. The verified information includes appointment consistency and timeout. After entering the site, the electromagnetic sensors arranged on the ground are responsible for capturing the vehicle's dynamic information, including speed, direction and time information. With this data, the system generates and displays the vehicle's real-time driving trajectory internally. The actual driving trajectory of the vehicle is compared with the previously planned route. If the deviation exceeds the set threshold, the system activates the warning function to prompt the driver to correct the route in time to ensure that the vehicle always travels along a safe and optimized path. When the vehicle arrives at the destination, the system records the actual arrival time and compares it with the planned time, calculates the delay time, and the delay time is further used to adjust the entry plan of subsequent vehicles to ensure a smooth overall process. The advantages of the on-site motor vehicle operation monitoring method include improving the accuracy and efficiency of vehicle management. By recording and monitoring the dynamic behavior of vehicles in real time, the central management system can effectively plan and regulate the vehicle's driving route and work arrangements, reducing problems caused by route deviation or delays. The system can instantly warn and notify the driver to adjust the driving route, and dynamically adjust the deviation between the planned time and the actual arrival time, thereby optimizing the overall site operation and reducing congestion and waiting time.

[0074] In one embodiment of the present invention, the vehicle identification system comprises:

[0075] Image processing system: When the vehicle recognition system detects that a vehicle has entered the recognition area, the camera obtains the image of the license plate number of the motor vehicle, and the image processing system recognizes the correct license plate number in the image;

[0076] Information verification system: After the central management system receives the uploaded license plate number information, it verifies the license plate number information with the data recorded in the entry library. The verification content includes the license plate number consistency information and the motor vehicle reservation timeout information. When the verification content is consistent with the data recorded in the entry library, the central management system issues an instruction to allow the motor vehicle to enter, and the site entrance access control system is released. When the verification content is inconsistent with the data recorded in the entry library, the central management system issues an instruction to refuse the motor vehicle from entering, and at the same time records the motor vehicle's violation information and transmits the violation information to the management personnel.

[0077] The working principle and effect of the above technical solution are as follows: when a motor vehicle approaches the entrance of the site, the vehicle identification system installed at the entrance detects the presence of the vehicle. Once the vehicle is detected, the camera starts and captures the license plate image of the vehicle. The information of the license plate number in the image is automatically identified and parsed by using an image processing system (OCR system). The system uploads the identified license plate number information to the central management system. After receiving the license plate number, the central management system verifies the information. This includes comparing it with the pre-entered data to confirm the consistency of the license plate number and whether the vehicle has applied for and reserved the entry time within the specified range. If the license plate number completely matches the reservation information and the reservation time is within the permitted range, the central management system sends an instruction to release the access control system at the entrance and allow the vehicle to enter the site. If the information does not match, or the vehicle is not within the reservation time, the central management system immediately issues an instruction to refuse entry. While refusing the vehicle to enter the site, the system records the violation information related to it. The violation information is automatically transmitted to the management personnel through the system for further inspection and processing. The advantage of this system is that it uses automation technology to improve the security and management efficiency of the site entrance. By capturing and identifying the vehicle's license plate information in real time, combined with the verification and decision-making mechanism of the central management system, it can ensure that only verified vehicles with appropriate permissions can enter the venue. This reduces the risk of illegal or unauthorized vehicle entry and effectively maintains the security of the venue. In addition, the automated violation recording and notification function simplifies the supervision work of managers and ensures rapid response and handling of abnormal situations.

[0078] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A method for monitoring the operation of motor vehicles in a field, characterized in that: The method comprises: S1: The central management system records the license plate number, entry time, destination and workload of the motor vehicles entering the site, and plans the driving route and arrival time of the motor vehicles according to the entry time and destination, and plans the working time of the motor vehicles in the site according to the workload; S2: After the vehicle identification system at the site entrance recognizes that a motor vehicle requests to pass through, it obtains the license plate number of the motor vehicle and uploads the license plate number to the central management system. After receiving the license plate number information of the motor vehicle, the central management system verifies it with the recorded information and performs corresponding operations according to the verification result; S3: After the motor vehicle enters the field, multiple electromagnetic sensors on the ground in the field obtain the motor vehicle's driving speed, driving direction and the time when it passes a certain electromagnetic sensor in real time, and present the driving trajectory of the motor vehicle in real time based on the driving speed, driving direction and the time when it passes a certain electromagnetic sensor; S4: Compare the driving trajectory of the motor vehicle with the planned driving route. When the driving trajectory deviates from the planned driving route, issue a warning and prompt the driver to drive to the correct track, and calculate the deviation between the current driving position of the motor vehicle and the planned route to obtain the deviation coefficient. S4 includes: S41: Compare the current driving position of the motor vehicle with the nearest path point on the planned route, calculate the deviation between the current driving position of the motor vehicle and the planned route, the deviation represents the lateral distance between the current driving position of the motor vehicle and the planned route, obtain the deviation coefficient, when the deviation coefficient exceeds the set threshold, the central management system determines that the motor vehicle has deviated from the planned route, and the early warning system issues an alarm to warn the driver that the motor vehicle has deviated from the planned route; S42: The central management system re-plans the route, sends the guidance route and the correction direction to the navigation system of the motor vehicle, and monitors the motor vehicle to ensure that the motor vehicle travels according to the re-planned route; And, the deviation coefficient is obtained by the following formula: ； Wherein, P represents the deviation coefficient, ABC is used to describe the constant coefficient of the straight line of the planned route, x, y represent the position coordinates of the motor vehicle, k represents the deviation weight, and the value range of k is [1, 2], θ represents the angle between the current moving direction of the motor vehicle and the planned route direction, and the value range of θ is [0, 90°), v represents the driving speed of the motor vehicle, Indicates the maximum speed limit in the venue; When P≤1, it means that the motor vehicle is traveling on the planned route without deviation; When P>1, it means that the motor vehicle is not traveling on the planned route. At this time, the central management system determines that the motor vehicle has deviated from the planned route, and the early warning system issues an alarm to warn the driver that the motor vehicle has deviated from the planned route. S5: After the motor vehicle arrives at the destination, the actual arrival time is recorded and uploaded to the central management system. The central management system compares the actual arrival time with the planned arrival time to obtain the delay time. The central management system delays the scheduled arrival time of the subsequent motor vehicle according to the delay time, and notifies the driver of the subsequent vehicle of the vehicle, and S5 includes: S51: When the motor vehicle arrives at the destination, the geomagnetic sensor at the destination obtains the driving speed of the motor vehicle, and after confirming that the driving speed is 0, the confirmation information is uploaded to the central management system, and the central management system changes the state of the motor vehicle from the driving state to the mission state, and records the actual arrival time of the motor vehicle; S52: Compare the actual arrival time with the planned arrival time to obtain the delay time, wherein the delay time = actual arrival leave - planned arrival time. When the delay time ≤ 0, it indicates that the working time of the motor vehicle is within the planned time. When the delay time ≥ 0, it indicates that the working time of the motor vehicle is outside the planned time. The central management system dynamically adjusts the scheduled entry time of the subsequent motor vehicles according to the delay time, and notifies the drivers of the subsequent vehicles entering the site of the delay information.

2. A method for monitoring the operation of motor vehicles in a field according to claim 1, characterized in that: The workload of S1 includes: , where r represents the workload of the motor vehicle, n represents the number of tasks that the motor vehicle needs to complete, and t represents the time required for the motor vehicle to complete a single task.

3. The method for monitoring the operation of motor vehicles in a field according to claim 1, characterized in that: The S2 includes: S21: When the vehicle recognition system detects that a vehicle has entered the recognition area, an image of the license plate number of the motor vehicle is obtained through a camera, and a correct license plate number in the image is recognized through an image processing system; S22: After the central management system receives the uploaded license plate number information, it verifies the license plate number information with the data recorded in the entry library. The verification content includes the license plate number consistency information and the motor vehicle reservation timeout information. When the verification content is consistent with the data recorded in the entry library, the central management system issues an instruction to allow the motor vehicle to enter, and the site entrance access control system is released. When the verification content is inconsistent with the data recorded in the entry library, the central management system issues an instruction to refuse the motor vehicle from entering, and at the same time records the motor vehicle's violation information and transmits the violation information to the management personnel.

4. The method for monitoring the operation of motor vehicles in a field according to claim 1, characterized in that: The S3 includes: S31: After a motor vehicle enters the field, when the electromagnetic sensor senses the vehicle, the timestamp of each sensor passing through the vehicle during its driving process is collected in real time, and the time data collected by the electromagnetic sensor is uploaded to the central management system; S32: After receiving the time data, the central management system calculates the speed of the motor vehicle between adjacent sensors, analyzes the position of the motor vehicle when it passes through different electromagnetic sensors, determines the driving direction of the motor vehicle, and obtains the driving trajectory of the motor vehicle based on the driving speed, driving direction and time data, and displays the driving route of the motor vehicle in real time through a visualization system.

5. A motor vehicle operation monitoring system within a field, characterized in that: The system comprises: Pre-planning system: The central management system records the license plate number, entry time, destination and workload of the motor vehicles entering the site, and plans the driving route and arrival time of the motor vehicles based on the entry time and destination, and plans the working time of the motor vehicles in the site based on the workload; Vehicle identification system: After the vehicle identification system at the site entrance identifies a motor vehicle requesting to pass through, it obtains the license plate number of the motor vehicle and uploads the license plate number to the central management system. After receiving the license plate number information of the motor vehicle, the central management system verifies it with the recorded information and performs corresponding operations based on the verification results; Geomagnetic induction system: After a motor vehicle enters the field, multiple electromagnetic sensors on the ground inside the field obtain the motor vehicle's speed, direction and the time when it passes a certain electromagnetic sensor in real time, and present the motor vehicle's driving trajectory in real time based on the speed, direction and the time when it passes a certain electromagnetic sensor; Driving route correction system: compares the driving trajectory of the motor vehicle with the planned driving route, and when the driving trajectory deviates from the planned driving route, issues a warning and prompts the driver to drive to the correct track; the driving route correction system includes: Path deviation monitoring and early warning system: compare the current driving position of the motor vehicle with the nearest path point on the planned route, calculate the deviation between the current driving position of the motor vehicle and the planned route, the deviation represents the lateral distance between the current driving position of the motor vehicle and the planned route, obtain the deviation coefficient, when the deviation coefficient exceeds the set threshold, the central management system determines that the motor vehicle has deviated from the planned route, the early warning system issues an alarm, and warns the driver that the vehicle has deviated from the planned route; Route re-planning and driving monitoring system: The central management system re-plans the route, sends the guidance route and correction direction to the navigation system of the motor vehicle, and monitors the motor vehicle to ensure that the motor vehicle drives according to the re-planned route; And, the deviation coefficient is obtained by the following formula: ； Wherein, P represents the deviation coefficient, ABC is used to describe the constant coefficient of the straight line of the planned route, x, y represent the position coordinates of the motor vehicle, k represents the deviation weight, and the value range of k is [1, 2], θ represents the angle between the current moving direction of the motor vehicle and the planned route direction, and the value range of θ is [0, 90°), v represents the driving speed of the motor vehicle, Indicates the maximum speed limit in the venue; When P≤1, it means that the motor vehicle is traveling on the planned route without deviation; When P>1, it means that the motor vehicle is not traveling on the planned route. At this time, the central management system determines that the motor vehicle has deviated from the planned route, and the early warning system issues an alarm to warn the driver that the motor vehicle has deviated from the planned route. Reservation time dynamic adjustment system: after the motor vehicle arrives at the destination, the actual arrival time is recorded and uploaded to the central management system. The central management system compares the actual arrival time with the planned arrival time to obtain the delay time. The central management system postpones the scheduled entry time of the subsequent motor vehicle according to the delay time, and notifies the driver of the subsequent vehicle of the vehicle, and the reservation time dynamic adjustment system includes: Time recording system: When the motor vehicle arrives at the destination, the geomagnetic sensor at the destination obtains the driving speed of the motor vehicle. After confirming that the driving speed is 0, the confirmation information is uploaded to the central management system. The central management system changes the status of the motor vehicle from the driving status to the mission status and records the actual arrival time of the motor vehicle; Entry time adjustment notification system: compare the actual arrival time with the planned arrival time to obtain the delay time, wherein the delay time = actual arrival leave - planned arrival time. When the delay time is ≤0, it indicates that the working time of the motor vehicle is within the planned time. When the delay time is ≥0, it indicates that the working time of the motor vehicle is outside the planned time. The central management system dynamically adjusts the scheduled entry time of subsequent motor vehicles according to the delay time, and notifies the drivers of subsequent vehicles entering the site of the delay information.

6. The on-site motor vehicle operation monitoring system according to claim 5, characterized in that: The vehicle identification system comprises: Image processing system: When the vehicle recognition system detects that a vehicle has entered the recognition area, the camera obtains the image of the license plate number of the motor vehicle, and the image processing system recognizes the correct license plate number in the image; Information verification system: After the central management system receives the uploaded license plate number information, it verifies the license plate number information with the data recorded in the entry library. The verification content includes the license plate number consistency information and the motor vehicle reservation timeout information. When the verification content is consistent with the data recorded in the entry library, the central management system issues an instruction to allow the motor vehicle to enter, and the site entrance access control system is released. When the verification content is inconsistent with the data recorded in the entry library, the central management system issues an instruction to refuse the motor vehicle from entering, and at the same time records the motor vehicle's violation information and transmits the violation information to the management personnel.

7. An electronic device, characterized in that: It comprises a memory, a processor and a computer program stored in the memory and executable on the memory, wherein the processor executes the program to implement a method for monitoring the operation of motor vehicles on a field as described in any one of claims 1 to 4.

8. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: The program is executed by a processor to implement a method for monitoring the operation of motor vehicles on a field as described in any one of claims 1-4.

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