License-plate-free automatic weighing method and weighing system based on Tag identification

Abstract

The invention provides a license-plate-free automatic weighing method and weighing system based on Tag identification, and relates to the technical field of weighing, the method and system are applied to a weighing vehicle of which the front end and the rear end are both provided with Tag equipment, the front end and the rear end of the weighing vehicle are provided with the Tag equipment, when the weighing vehicle enters a weighing area, a first Tag sensor reads front-end Tag information, the front-end Tag information is compared with a data mapping library to confirm the vehicle, and after confirmation, the weighing vehicle enters the weighing area. The first Tag sensor and the second Tag sensor work at the same time, whether the vehicle is completely located in the weighing area or not is judged according to front and back Tag information, if yes, vehicle information and weight data are recorded, and when the vehicle leaves, the second Tag sensor detects the rear end Tag, and if not, it is regarded that the vehicle leaves the parking lot. Through Tag identification and position confirmation, accurate and efficient weighing is ensured, manual intervention is reduced, and logistics transportation efficiency and safety are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of weighing and weighing, and in particular to a method and a weighing system for automatic weighing and weighing without a license plate based on Tag recognition. Background Art

[0002] In the current field of logistics and cargo weighing, the traditional automatic weighing system based on license plate recognition has improved the weighing efficiency and accuracy to a certain extent, but it still faces many challenges and shortcomings. These problems are particularly prominent in cases where the truck license plate is missing, poor lighting conditions lead to recognition errors, and the vehicle is not fully weighed. These problems not only cause congestion in the weighing process, but may also lead to inaccurate weighing results, which in turn leads to property losses and disputes.

[0003] Therefore, it is necessary to provide a method and system for automatic weighing without a license plate based on tag recognition to solve the above technical problems. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides an automatic weighing method and weighing system without license plate based on Tag recognition, which does not rely on license plate recognition, but realizes automatic identification and positioning of the vehicle through Tag devices installed in the front and rear of the vehicle. It can not only effectively solve the recognition error problems caused by missing license plates and poor lighting, but also judge whether the vehicle is fully weighed through precise Tag signal detection, thereby improving weighing accuracy and weighing efficiency.

[0005] The present invention provides a method for automatic weighing without a license plate based on tag recognition, which is applied to weighing vehicles with tag devices configured at both the front and rear ends, including a weighing area and a first tag sensor respectively arranged at the entrance of the weighing area, a second tag sensor arranged at the exit of the weighing area and a weighing sensor configured in the weighing area.

[0006] The weighing method comprises the following steps:

[0007] When the weighing vehicle enters the weighbridge area, the first Tag sensor reads the Tag information of the Tag device at the front end of the weighing vehicle, and compares the Tag information with the vehicle information in the pre-built data mapping library;

[0008] After the comparison is consistent, the first Tag sensor and the second Tag sensor simultaneously read the Tag information at the front and rear ends of the weighing vehicle, and determine whether the weighing vehicle is completely located in the weighing area based on the Tag information at the front and rear ends;

[0009] If the weighing vehicle is completely located in the weighing area, the weighing result is recorded, wherein the weighing result includes the vehicle information and weight data of the weighing vehicle;

[0010] When the weighing vehicle leaves the weighing area, the second Tag sensor detects the Tag information of the Tag device at the rear end of the weighing vehicle. If no Tag information is detected, the weighing vehicle has completely left the weighing area.

[0011] Preferably, before the weighing vehicle enters the weighing area, the method further includes:

[0012] The tag signal strength of the first tag sensor and the second tag sensor is monitored by an automatic abnormality detection algorithm to detect whether there is an abnormality; if an abnormality is detected, the weighing is stopped and the abnormality is handled.

[0013] Preferably, the automatic anomaly detection algorithm comprises the following steps:

[0014] Collect historical data of multiple tag signal strengths;

[0015] An anomaly detection model is trained based on historical data, where the anomaly detection model is used to identify abnormal patterns of tag signal strength;

[0016] Before the weighing vehicle enters the weighing area, the tag signal strength of the first tag sensor and the second tag sensor is monitored by the abnormal detection model;

[0017] If an abnormal pattern is detected, the abnormal handling mechanism is triggered, the weighing operation is stopped and the staff is notified to handle it.

[0018] Preferably, it also includes a first flower rod system arranged at the entrance of the weighing area and a second flower rod system arranged at the exit of the weighing area, wherein:

[0019] The first flower rod system is used to open after the weighing vehicle is matched and consistent, allowing the weighing vehicle to enter the weighing area, and close when the weighing vehicle is completely located in the weighing area;

[0020] The second flower rod system is used to open after the weighing of the weighed vehicle is completed, allowing the weighed vehicle to leave the weighing area, and close when the weighed vehicle completely leaves the weighing area.

[0021] Preferably, the determination of whether the weighing vehicle is completely located in the weighing area includes:

[0022] The time difference between the first tag sensor and the second tag sensor detecting the tag information is recorded, and compared with the time required for the weighing vehicle to completely pass through the weighing area calculated based on the speed of the weighing vehicle and the length of the weighing area; if the time difference matches the calculated time, it is considered that the weighing vehicle is completely located in the weighing area.

[0023] Preferably, the determination of whether the weighing vehicle is completely located in the weighing area includes:

[0024] The position of the weighing vehicle in the weighing area is estimated by combining the speed of the weighing vehicle and the distance between the first Tag sensor and the second Tag sensor; if the estimated position indicates that the weighing vehicle is completely located in the weighing area, it is considered that the weighing vehicle is completely located in the weighing area.

[0025] Preferably, the determination of whether the weighing vehicle is completely located in the weighing area includes:

[0026] Observe whether the weight reading of the weighing sensor tends to be stable to determine whether the weighed vehicle is completely located in the weighing area; if the weight reading tends to be stable, it is considered that the weighed vehicle is completely located in the weighing area.

[0027] The present invention also provides a non-license plate automatic weighing system based on tag recognition, which is applied to weighing vehicles equipped with tag devices at both the front and rear ends, including a weighing area and a first tag sensor respectively arranged at the entrance of the weighing area, a second tag sensor arranged at the exit of the weighing area, and a weighing sensor arranged in the weighing area. The weighing system also includes a central processing unit for data communication with the first tag sensor, the second tag sensor, the weighing sensor, the first flower rod system and the second flower rod system, wherein the central processing unit is used to perform the following steps:

[0028] When the weighing vehicle enters the weighbridge area, the first Tag sensor reads the Tag information of the Tag device at the front end of the weighing vehicle, and compares the Tag information with the vehicle information in the pre-built data mapping library;

[0029] After the comparison is consistent, the first Tag sensor and the second Tag sensor simultaneously read the Tag information at the front and rear ends of the weighing vehicle, and determine whether the weighing vehicle is completely located in the weighing area based on the Tag information at the front and rear ends;

[0030] If the weighing vehicle is completely located in the weighing area, the weighing result is recorded, wherein the weighing result includes the vehicle information and weight data of the weighing vehicle;

[0031] When the weighing vehicle leaves the weighing area, the second Tag sensor detects the Tag information of the Tag device at the rear end of the weighing vehicle. If no Tag information is detected, the weighing vehicle has completely left the weighing area.

[0032] Preferably, the central processing unit is also used for:

[0033] Before the weighing vehicle enters the weighing area, the tag signal strength of the first tag sensor and the second tag sensor is monitored by an automatic abnormality detection algorithm to detect whether there is an abnormality; if an abnormality is detected, the weighing is stopped and the abnormality is handled.

[0034] Preferably, the central processing unit is also used for:

[0035] Controlling the first flower rod system to open after the weighing vehicle is matched and consistent, allowing the weighing vehicle to enter the weighing area, and closing when the weighing vehicle is completely located in the weighing area;

[0036] The second flower rod system is controlled to open after the weighing vehicle completes weighing, allowing the weighing vehicle to leave the weighing area, and is closed when the weighing vehicle completely leaves the weighing area.

[0037] Compared with the related art, the automatic weighing method and weighing system without license plate based on Tag recognition provided by the present invention have the following beneficial effects:

[0038] The present invention uses a tag device instead of a license plate to identify a vehicle, effectively avoiding the common recognition error problem in license plate recognition technology. The tag device has a unique identifier, is not easily disturbed by the external environment, and can stably and accurately provide vehicle identity information, thereby greatly improving the accuracy and stability of recognition.

[0039] At the same time, through the Tag sensors configured before and after the weighing area, the system can automatically read the Tag information of the weighed vehicle and compare it with the pre-built data mapping library, and complete the confirmation of the vehicle identity without manual intervention. At the same time, combined with the automatic anomaly detection algorithm, the system can monitor the Tag signal strength in real time, detect and handle abnormal situations in a timely manner, and further enhance the automation and intelligence level of the system.

[0040] Tag information is used to determine whether the vehicle is completely located in the weighing area, and a comprehensive judgment is made based on the reading stability of the weighing sensor to ensure the accuracy and reliability of the weighing data. In addition, by setting up a flower pole system to control the vehicle's entry and exit from the weighing area, weighing errors caused by vehicles not being fully weighed or leaving early are effectively avoided, improving weighing efficiency. At the same time, the automated process reduces manual operations and reduces the risk of safety accidents caused by human factors. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 The present invention provides a flow chart of a method for automatic weighing without a license plate based on tag recognition. DETAILED DESCRIPTION

[0042] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings. In addition, the embodiments of the present invention and the features in the embodiments may be combined with each other without conflict.

[0043] It should also be noted that, for ease of description, only the part relevant to the present invention but not all the content is shown in the accompanying drawings. It should be mentioned before discussing the exemplary embodiments in more detail that some exemplary embodiments are described as the processing or method described as a flow chart. Although the flow chart describes each operation (or step) as being processed sequentially, many operations therein can be implemented in parallel, concurrently or simultaneously. In addition, the order of each operation can be rearranged. When its operation is completed, the processing can be terminated, but it can also have additional steps not included in the accompanying drawings. The processing can correspond to a method, a function, a procedure, a subroutine, a subprogram, etc.

[0044] Embodiment 1

[0045] The present invention provides a method for automatic weighing without a license plate based on tag recognition, which is applied to weighing vehicles with tag devices configured at both the front and rear ends, including a weighing area and a first tag sensor respectively arranged at the entrance of the weighing area, a second tag sensor arranged at the exit of the weighing area and a weighing sensor configured in the weighing area.

[0046] The weighing method comprises the following steps:

[0047] S1: The tag signal strength of the first tag sensor and the second tag sensor is monitored through an automatic abnormality detection algorithm to detect whether there is an abnormality; if an abnormality is detected, the weighing is stopped and the abnormality is handled.

[0048] Specifically, the automatic anomaly detection algorithm includes the following steps:

[0049] S11: Collect historical data of multiple tag signal strengths.

[0050] In this embodiment, during operation, the tag signal strength data detected by the first tag sensor and the second tag sensor are continuously collected, and the collected data is stored in a database for subsequent analysis and use. The collected data is cleaned to remove invalid or abnormal data points to ensure data quality.

[0051] A historical data set containing tag signal strength was established, which provided a data basis for subsequent anomaly detection model training. At the same time, by cleaning the data, the accuracy and reliability of the data were ensured, which was conducive to improving the accuracy of anomaly detection.

[0052] S12: training an anomaly detection model according to historical data, wherein the anomaly detection model is used to identify abnormal patterns of tag signal strength.

[0053] In this embodiment, useful features such as signal strength, rate of change of signal strength, etc. are extracted from historical data, and machine learning algorithms including but not limited to support vector machines, decision trees, and random forests are selected to train anomaly detection models. The anomaly detection model is trained using features and labels (normal / abnormal) in the historical data set, and the performance of the model is evaluated using methods such as cross-validation to ensure that the model has good generalization ability.

[0054] The anomaly detection model obtained through training can accurately identify abnormal patterns of tag signal strength. At the same time, through model evaluation, it is ensured that the model has high accuracy and stability on new data.

[0055] S13: Before the weighing vehicle enters the weighing area, the tag signal strength of the first tag sensor and the second tag sensor is monitored by the abnormality detection model.

[0056] In this embodiment, when the vehicle approaches the weighing area, the tag signal strength detected by the first tag sensor and the second tag sensor is monitored in real time, and the real-time monitored tag signal strength data is input into the trained anomaly detection model. The model outputs the detection result, indicating whether the signal strength is normal.

[0057] This step can monitor the tag signal strength in real time and detect abnormal situations in time. Through accurate judgment of the model, the possibility of false alarms is reduced and the stability of the system is improved.

[0058] S14: If an abnormal pattern is detected, the abnormality handling mechanism is triggered, the weighing operation is stopped and the staff is notified to handle it.

[0059] In this embodiment, when the abnormality detection model outputs an abnormal result, the abnormality handling mechanism is triggered, and the weighing operation is automatically stopped to prevent the weighing results under abnormal conditions from affecting the accuracy. The staff is notified of the occurrence of the abnormal situation through methods including but not limited to sound and light alarms, text messages or emails. The staff conducts on-site inspections based on the notification to eliminate the cause of the abnormality.

[0060] S2: When the weighing vehicle enters the weighing area, the Tag information of the Tag device at the front end of the weighing vehicle is read by the first Tag sensor, and the Tag information is compared with the vehicle information in the pre-built data mapping library.

[0061] In this embodiment, the pre-built data mapping library is a database or data structure for storing various information related to the weighed vehicles so as to facilitate quick retrieval and verification when the vehicles enter the weighbridge area.

[0062] The data mapping library contains multiple fields and information related to weighed vehicles, including but not limited to the following aspects:

[0063] Vehicle ID: Information that uniquely identifies each vehicle being weighed, which can be in the form of numbers, letters, or a combination, used to quickly identify the vehicle.

[0064] Tag device ID: The Tag device ID corresponding to the vehicle ID. Each Tag device has a unique ID number, which is used to identify the Tag device installed on the vehicle.

[0065] Tag location information: records the specific location of each tag device on the vehicle, such as the front or rear end.

[0066] Basic vehicle information: including vehicle type, unit to which it belongs, maximum allowable load, etc.

[0067] Historical weighing records: store the historical weighing records of the vehicle, including date, time, weight and other information.

[0068] Contact information: including the contact information of the vehicle owner or driver so that we can get in touch with you in time when needed.

[0069] Specifically, the design of the data mapping library allows the system to quickly find relevant information about a specific vehicle to verify the identity of the vehicle, facilitate the management and maintenance of vehicle information, ensure the accuracy and completeness of the information, and support analysis based on historical data, such as counting the average load weight of vehicles and identifying vehicles that are frequently weighed.

[0070] The database design uses a relational database to store and manage data, and creates indexes for commonly used query fields to improve query speed. In order to ensure that the information in the data mapping library is consistent with the actual information of the vehicle, it can be achieved through regular updates or real-time synchronization.

[0071] When a vehicle enters the weighbridge area, the first Tag sensor reads the Tag information of the Tag device at the front end of the vehicle, and compares the read Tag information with the vehicle information in the pre-built data mapping library to verify the identity of the vehicle.

[0072] For example, assume that the information of a weighed vehicle is as follows:

[0073] Vehicle ID: 12345;

[0074] Tag device ID: T12345-F (front end), T12345-B (back end);

[0075] Basic vehicle information: Vehicle type: Truck, Affiliate: XX Transportation Company, Maximum permitted load: 20 tons;

[0076] Historical weighing record: 2023-08-24 10:30:00, weight: 15 tons;

[0077] Contact information: Driver phone number: 12345678901;

[0078] When the vehicle enters the weighing area, the first Tag sensor reads the ID of the front-end Tag device (for example, T12345-F). The system will quickly retrieve all the information corresponding to the ID from the data mapping library and compare it with the stored data to verify the identity of the vehicle.

[0079] By comparing the tag information with the vehicle information in the database, the vehicle can be accurately identified to prevent illegal vehicles from entering the weighing area. At the same time, the automated vehicle information comparison process increases the speed at which vehicles enter the weighing area and reduces waiting time.

[0080] S3: After the comparison is consistent, the first Tag sensor and the second Tag sensor simultaneously read the Tag information at the front and rear ends of the weighing vehicle, and determine whether the weighing vehicle is completely located in the weighing area based on the Tag information at the front and rear ends.

[0081] Whether the weighing vehicle is completely located in the weighing area can be judged from the following aspects: time difference analysis, position estimation and weight data.

[0082] The specific process of time difference analysis is as follows:

[0083] The time difference between the first tag sensor and the second tag sensor detecting the tag information is recorded, and compared with the time required for the weighing vehicle to completely pass through the weighing area calculated based on the speed of the weighing vehicle and the length of the weighing area; if the time difference matches the calculated time, it is considered that the weighing vehicle is completely located in the weighing area.

[0084] In this embodiment, the time when the first Tag sensor detects the front-end Tag information and the time when the second Tag sensor detects the back-end Tag information are recorded.

[0085] Time difference calculation: Calculate the time difference between the time when the first Tag sensor detects the front-end Tag information and the time when the second Tag sensor detects the back-end Tag information.

[0086] Weighing area length and vehicle speed: Get the length of the weighing area and the speed of the weighing vehicle.

[0087] Theoretical time calculation: Calculate the time required for a weighing vehicle to completely pass through the weighing area based on the length of the weighing area and the vehicle speed.

[0088] Comparison judgment: Compare whether the time difference is roughly equal to the theoretical time. If the difference is not large (less than a preset threshold), it is considered that the weighing vehicle is completely located in the weighing area.

[0089] The process of position estimation is as follows:

[0090] The position of the weighing vehicle in the weighing area is estimated by combining the speed of the weighing vehicle and the distance between the first Tag sensor and the second Tag sensor; if the estimated position indicates that the weighing vehicle is completely located in the weighing area, it is considered that the weighing vehicle is completely located in the weighing area.

[0091] In this embodiment, the speed of the weighed vehicle is obtained.

[0092] Sensor distance: Measure the distance between the first tag sensor and the second tag sensor.

[0093] Time difference calculation: Calculate the time difference between the first tag sensor and the second tag sensor detecting the tag information respectively.

[0094] Position estimation: Estimate the position of the weighed vehicle based on the time difference and vehicle speed.

[0095] Comparative judgment: If the estimated position plus the vehicle length does not exceed the sensor spacing, the vehicle is considered to be completely located in the weighing area.

[0096] The specific process of weight data is as follows:

[0097] Observe whether the weight reading of the weighing sensor tends to be stable to determine whether the weighed vehicle is completely located in the weighing area; if the weight reading tends to be stable, it is considered that the weighed vehicle is completely located in the weighing area.

[0098] In this embodiment, the weight reading of the weighing sensor is monitored and the changing trend of the weight reading is observed. If the weight reading tends to be stable over a period of time (the fluctuation range is less than a preset threshold), it is considered that the weighed vehicle is completely located in the weighing area, and a reasonable stability threshold is set to determine whether the weight reading is stable.

[0099] S4: If the weighing vehicle is completely located in the weighing area, the weighing result is recorded, wherein the weighing result includes vehicle information and weight data of the weighing vehicle.

[0100] In this embodiment, after completing the time difference analysis, position estimation and weight data judgment, if all judgments indicate that the vehicle to be weighed is completely located in the weighing area, weighing can be performed.

[0101] The vehicle weight data is obtained through the weighing sensor, and combined with the vehicle information in the tag information read previously, a complete weighing result is formed, and the vehicle information of the weighed vehicle (including but not limited to vehicle ID, affiliated unit, maximum allowable load, etc.) is integrated with the weight data obtained by weighing, and the integrated weighing result is stored in a pre-built data mapping library or other database for subsequent query and management.

[0102] For example, assume that the information of a weighed vehicle is as follows:

[0103] Vehicle ID: 12345.

[0104] Tag device ID: front end: T12345-F, back end: T12345-B.

[0105] Basic vehicle information: Vehicle type: Truck, Affiliate: XX Transport Company, Maximum allowable load: 20 tons.

[0106] Historical weighing record: 2023-08-24 10:30:00, weight: 15 tons.

[0107] Contact information: Driver’s phone number: 12345678901.

[0108] When the vehicle is completely on the weighing area, the following weighing results are recorded:

[0109] Vehicle ID: 12345.

[0110] Basic vehicle information: Vehicle type: Truck, Affiliate: XX Transport Company, Maximum allowable load: 20 tons.

[0111] The weighing time is: 2023-08-24 10:35:00.

[0112] Weight data: 16 tons.

[0113] S5: When the weighing vehicle leaves the weighing area, the tag information of the tag device at the rear end of the weighing vehicle is detected by the second tag sensor. If no tag information is detected, the weighing vehicle has completely left the weighing area.

[0114] In this embodiment, when the weighing vehicle starts to leave the weighing area, the second Tag sensor detects Tag information of the Tag device at the rear end of the weighing vehicle.

[0115] If the second tag sensor fails to detect any tag information, it is considered that the weighing vehicle has completely left the weighing area.

[0116] After confirming that the weighing vehicle has completely left the weighing area, the second flower pole system is controlled to close to ensure the safe passage of subsequent vehicles.

[0117] Specifically, it also includes a first flower rod system arranged at the entrance of the weighing area and a second flower rod system arranged at the exit of the weighing area, wherein:

[0118] The first flower rod system is used to open after the weighing vehicles are matched and consistent, allowing the weighing vehicles to enter the weighing area, and close when the weighing vehicles are completely located in the weighing area.

[0119] In this embodiment, when the front-end Tag information of the weighing vehicle is successfully read by the first Tag sensor and verified through comparison, the first flower rod system automatically opens to allow the weighing vehicle to enter the weighing area.

[0120] When it is determined through time difference analysis, position estimation and weight data that the vehicle to be weighed is completely located in the weighing area, the first flower rod system is automatically closed to ensure that only vehicles that are completely located in the weighing area can be weighed.

[0121] The automatic control of the first flower pole system ensures that the weighing vehicles enter the weighing area in an orderly manner, avoiding traffic jams; the automated flower pole system control reduces the need for human intervention and improves the safety of the weighing process.

[0122] The second flower rod system is used to open after the weighing of the weighed vehicle is completed, allowing the weighed vehicle to leave the weighing area, and close when the weighed vehicle completely leaves the weighing area.

[0123] In this embodiment, when the weighing vehicle completes weighing, the second flower rod system automatically opens to allow the weighing vehicle to leave the weighing area.

[0124] When the second Tag sensor fails to detect the Tag information of the Tag device at the rear end of the weighing vehicle, it is considered that the weighing vehicle has completely left the weighing area, and the second flower pole system is automatically shut down.

[0125] Through the automatic control of the second flower pole system, the departure process of the weighed vehicles is accelerated, and the overall traffic efficiency is improved; by ensuring that the weighed vehicles completely leave the weighing area before closing the flower pole system, the safe passage of subsequent vehicles is guaranteed.

[0126] The working principle of the automatic weighing method without license plate based on Tag recognition provided by the present invention is as follows:

[0127] In the field of modern logistics and transportation, efficient and accurate vehicle weighing is an important part of ensuring transportation safety and efficiency. In view of the limitations of the traditional weighing method that relies on license plate recognition, this application introduces an innovative automatic weighing method without license plates based on tag recognition. This method uses wireless radio frequency identification (RFID) technology to achieve automatic identification and accurate weighing of weighed vehicles, significantly improving weighing efficiency and accuracy.

[0128] The core of this method is that the weighing vehicle is equipped with Tag devices at both the front and rear ends, and the first Tag sensor and the second Tag sensor are set at the entrance and exit of the weighing area, and work together with the weighing sensor. When the vehicle enters the weighing area, a series of automated processes are used to complete the vehicle identification, location confirmation, weighing and departure detection, without manual intervention throughout the process, specifically:

[0129] When a vehicle enters the weighing area, the first Tag sensor installed at the entrance reads the Tag information of the Tag device on the front end of the vehicle. This information is then quickly compared with the vehicle information in the pre-built data mapping library to confirm the vehicle identity and its related attributes. If the comparison is successful, the vehicle is allowed to continue moving forward.

[0130] To ensure the accuracy of the weighing data and further confirm whether the vehicle is completely located in the weighing area, the first and second tag sensors work simultaneously to read the tag information at the front and rear ends of the vehicle and comprehensively determine the vehicle position through a variety of mechanisms. These methods include but are not limited to:

[0131] Time difference comparison: By recording the time difference between the two sensors detecting the tag information, it is compared with the theoretical time calculated based on the vehicle speed and the length of the weighing area to verify whether the vehicle has completely entered the weighing area.

[0132] Position estimation: Combined with the vehicle speed and sensor spacing, the specific position of the vehicle in the weighing area is dynamically estimated to ensure that the vehicle fully covers the weighing area.

[0133] Weight reading stability: Observe the changes in the readings of the weighing sensor. If the readings tend to be stable, it is considered that the vehicle has been stably parked in the weighing area.

[0134] In addition, the system also integrates an automatic anomaly detection algorithm to monitor the tag signal strength in real time to identify and handle potential signal interference or equipment failures, ensuring the continuity and accuracy of the weighing process.

[0135] Once it is confirmed that the vehicle is completely located in the weighing area, the weighing sensor immediately starts working, accurately measures the vehicle weight, and automatically records the weighing results (including vehicle information and weight data). This process is not only efficient, but also reduces the possibility of human error.

[0136] After the vehicle is weighed, it is ready to leave the weighing area. At this time, the second Tag sensor installed at the exit comes into play again to detect the Tag information at the rear end of the vehicle to confirm whether the vehicle has completely left. At the same time, combined with the automatic control of the first Tag sensor and the second flower pole system, it ensures that the vehicle enters and exits the weighing area at the appropriate time, which not only ensures safety but also improves traffic efficiency.

[0137] In summary, the automatic weighing method without license plates based on tag recognition realizes the rapid identification, accurate weighing and effective management of weighed vehicles through highly integrated automated processes and intelligent algorithms. This method not only improves the weighing efficiency and accuracy, but also reduces the manual operation costs, bringing significant convenience and benefits to the logistics and transportation industry.

[0138] Embodiment 2

[0139] The present invention also provides a non-license plate automatic weighing system based on tag recognition, which is applied to weighing vehicles equipped with tag devices at both the front and rear ends, including a weighing area and a first tag sensor respectively arranged at the entrance of the weighing area, a second tag sensor arranged at the exit of the weighing area, and a weighing sensor arranged in the weighing area. The weighing system also includes a central processing unit for data communication with the first tag sensor, the second tag sensor, the weighing sensor, the first flower rod system and the second flower rod system, wherein the central processing unit is used to perform the following steps:

[0140] When the weighing vehicle enters the weighing area, the first Tag sensor reads the Tag information of the Tag device at the front end of the weighing vehicle, and compares the Tag information with the vehicle information in the pre-built data mapping library.

[0141] After the comparison is consistent, the first Tag sensor and the second Tag sensor simultaneously read the Tag information at the front and rear ends of the weighing vehicle, and determine whether the weighing vehicle is completely located in the weighing area based on the Tag information at the front and rear ends.

[0142] If the weighing vehicle is completely located in the weighing area, the weighing result is recorded, wherein the weighing result includes vehicle information and weight data of the weighing vehicle.

[0143] When the weighing vehicle leaves the weighing area, the second Tag sensor detects the Tag information of the Tag device at the rear end of the weighing vehicle. If no Tag information is detected, the weighing vehicle has completely left the weighing area.

[0144] Specifically, the central processing unit is also used for:

[0145] Before the weighing vehicle enters the weighing area, the tag signal strength of the first tag sensor and the second tag sensor is monitored by an automatic abnormality detection algorithm to detect whether there is an abnormality; if an abnormality is detected, the weighing is stopped and the abnormality is handled.

[0146] Specifically, the central processing unit is also used for:

[0147] Controlling the first flower rod system to open after the weighing vehicle is matched and consistent, allowing the weighing vehicle to enter the weighing area, and closing when the weighing vehicle is completely located in the weighing area;

[0148] The second flower rod system is controlled to open after the weighing vehicle completes weighing, allowing the weighing vehicle to leave the weighing area, and is closed when the weighing vehicle completely leaves the weighing area.

[0149] The present application is described with reference to flowcharts and / or block diagrams of methods, devices (systems) and computer program products according to embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0150] A person skilled in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, and the storage medium includes a read-only memory (ROM), a random access memory (RAM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), a one-time programmable read-only memory (OTPROM), an electronically erasable rewritable read-only memory (EEPROM), a compact disc (CD-ROM) or other optical disc storage, magnetic disk storage, magnetic tape storage, or any other computer-readable medium that can be used to carry or store data.

[0151] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device that includes a series of elements includes not only those elements, but also other elements that are not explicitly listed, or includes elements that are inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device that includes the elements.

Claims

1. A method for automatic weighing without a license plate based on tag recognition, which is applied to weighing vehicles with tag devices configured at both the front and rear ends, comprising a weighing area and a first tag sensor respectively arranged at the entrance of the weighing area, a second tag sensor arranged at the exit of the weighing area and a weighing sensor arranged in the weighing area, characterized in that: The weighing method comprises the following steps: When the weighing vehicle enters the weighbridge area, the first Tag sensor reads the Tag information of the Tag device at the front end of the weighing vehicle, and compares the Tag information with the vehicle information in the pre-built data mapping library; After the comparison is consistent, the first Tag sensor and the second Tag sensor simultaneously read the Tag information at the front and rear ends of the weighing vehicle, and determine whether the weighing vehicle is completely located in the weighing area based on the Tag information at the front and rear ends; If the weighing vehicle is completely located in the weighing area, the weighing result is recorded, wherein the weighing result includes the vehicle information and weight data of the weighing vehicle; When the weighing vehicle leaves the weighing area, the second Tag sensor detects the Tag information of the Tag device at the rear end of the weighing vehicle. If no Tag information is detected, the weighing vehicle has completely left the weighing area.

2. The method for automatic weighing without a license plate based on tag recognition according to claim 1 is characterized in that: Before the weighing vehicle enters the weighing area, it also includes: The tag signal strength of the first tag sensor and the second tag sensor is monitored by an automatic abnormality detection algorithm to detect whether there is an abnormality; if an abnormality is detected, the weighing is stopped and the abnormality is handled.

3. The method for automatic weighing without license plate based on tag recognition according to claim 2 is characterized in that: The automatic anomaly detection algorithm comprises the following steps: Collect historical data of multiple tag signal strengths; An anomaly detection model is trained based on historical data, where the anomaly detection model is used to identify abnormal patterns of tag signal strength; Before the weighing vehicle enters the weighing area, the tag signal strength of the first tag sensor and the second tag sensor is monitored by the abnormal detection model; If an abnormal pattern is detected, the abnormal handling mechanism is triggered, the weighing operation is stopped and the staff is notified to handle it.

4. The method for automatic weighing without license plate based on tag recognition according to claim 1 is characterized in that: It also includes a first flower rod system arranged at the entrance of the weighing area and a second flower rod system arranged at the exit of the weighing area, wherein: The first flower rod system is used to open after the weighing vehicle is matched and consistent, allowing the weighing vehicle to enter the weighing area, and close when the weighing vehicle is completely located in the weighing area; The second flower rod system is used to open after the weighing of the weighed vehicle is completed, allowing the weighed vehicle to leave the weighing area, and close when the weighed vehicle completely leaves the weighing area.

5. The method for automatic weighing without license plate based on tag recognition according to claim 1 is characterized in that: The judgment of whether the weighing vehicle is completely located in the weighing area includes: The time difference between the first tag sensor and the second tag sensor detecting the tag information is recorded, and compared with the time required for the weighing vehicle to completely pass through the weighing area calculated based on the speed of the weighing vehicle and the length of the weighing area; if the time difference matches the calculated time, it is considered that the weighing vehicle is completely located in the weighing area.

6. The method for automatic weighing without license plate based on tag recognition according to claim 1 is characterized in that: The judgment of whether the weighing vehicle is completely located in the weighing area includes: The position of the weighing vehicle in the weighing area is estimated by combining the speed of the weighing vehicle and the distance between the first Tag sensor and the second Tag sensor; if the estimated position indicates that the weighing vehicle is completely located in the weighing area, it is considered that the weighing vehicle is completely located in the weighing area.

7. The method for automatic weighing without license plate based on tag recognition according to claim 1 is characterized in that: The judgment of whether the weighing vehicle is completely located in the weighing area includes: Observe whether the weight reading of the weighing sensor tends to be stable to determine whether the weighed vehicle is completely located in the weighing area; if the weight reading tends to be stable, it is considered that the weighed vehicle is completely located in the weighing area.

8. An automatic weighing system without license plate based on tag recognition, applied to weighing vehicles with tag devices configured at both the front and rear ends, including a weighing area and a first tag sensor respectively arranged at the entrance of the weighing area, a second tag sensor arranged at the exit of the weighing area and a weighing sensor arranged in the weighing area, characterized in that: The weighing system further includes a central processing unit for data communication with the first tag sensor, the second tag sensor, the weighing sensor, the first flower rod system and the second flower rod system, wherein the central processing unit is used to perform the following steps: When the weighing vehicle enters the weighbridge area, the first Tag sensor reads the Tag information of the Tag device at the front end of the weighing vehicle, and compares the Tag information with the vehicle information in the pre-built data mapping library; After the comparison is consistent, the first Tag sensor and the second Tag sensor simultaneously read the Tag information at the front and rear ends of the weighing vehicle, and determine whether the weighing vehicle is completely located in the weighing area based on the Tag information at the front and rear ends; If the weighing vehicle is completely located in the weighing area, the weighing result is recorded, wherein the weighing result includes the vehicle information and weight data of the weighing vehicle; When the weighing vehicle leaves the weighing area, the second Tag sensor detects the Tag information of the Tag device at the rear end of the weighing vehicle. If no Tag information is detected, the weighing vehicle has completely left the weighing area.

9. The automatic weighing system without license plate based on tag recognition according to claim 8 is characterized in that: The central processing unit is also used for: Before the weighing vehicle enters the weighing area, the tag signal strength of the first tag sensor and the second tag sensor is monitored by an automatic abnormality detection algorithm to detect whether there is an abnormality; if an abnormality is detected, the weighing is stopped and the abnormality is handled.

10. The automatic weighing system without license plate based on tag recognition according to claim 8 is characterized in that: The central processing unit is also used for: Controlling the first flower rod system to open after the weighing vehicle is matched and consistent, allowing the weighing vehicle to enter the weighing area, and closing when the weighing vehicle is completely located in the weighing area; The second flower rod system is controlled to open after the weighing vehicle completes weighing, allowing the weighing vehicle to leave the weighing area, and is closed when the weighing vehicle completely leaves the weighing area.

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