Wagon balance weighing system for ground sale coal loading

Abstract

The invention discloses a wagon balance weighing system for ground sale coal payment, and the system comprises a data collection module which is used for collecting environment data; the visual identification module is used for identifying the vehicle data and the form of the coal pile in the vehicle; the environment data preprocessing module is used for compensating the weighing result according to the environment data; the communication module is used for transmitting the vehicle weighing data to a superior system; the feedback module is used for feeding back the vehicle weighing data to the field staff; the data processing module is used for processing related data of the data acquisition module and the visual identification module; the method has the advantages that the coal piles in the vehicle are identified, and the safety of the coal transport vehicle is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of weighbridge weighing systems and relates to a weighbridge weighing system for ground sales of coal Background Art

[0002] With the large-scale exploitation of coal resources in China and the popularization of the ground sales of coal mode, the weighbridge weighing system plays a crucial role in coal metering, settlement and quality supervision. The weighing system for ground sales of coal mainly relies on traditional measuring devices such as pressure sensors and load cells. The traditional system lacks an intuitive detection of the coal stacking situation and cannot timely detect abnormalities caused by uneven loading or local deformation of the platform.

[0003] Chinese invention patent with the authorization publication number CN117516677A discloses a remote unattended weighbridge weighing system, including: a sensor module for detecting the gravitational force of a load object; a data acquisition and conversion module for converting the processed data into digital signals and collecting them; a control module for overall control and coordination of the weighbridge weighing system; a communication module for communicating with other systems or a superior monitoring center; a remote monitoring and management module for allowing an operator or supervisor to monitor and manage the weighbridge weighing system through remote access; a calibration module for detecting and calibrating the sensor accuracy of the weighbridge weighing system. This technical solution can automatically detect and calibrate the sensor accuracy through the calibration module, ensure the accuracy and reliability of the weighing result, and online realize the error calibration and compensation correction of the sensor to ensure the weighing accuracy of the system. However, in this technical solution, the form of the coal transport vehicle and the form of the coal pile in the vehicle cannot be detected, and the coal on the vehicle may collapse during subsequent transportation, thus causing environmental pollution or danger to the vehicle. Summary of the Invention

[0004] In view of the above problems, the present invention proposes a weighbridge weighing system for ground sales of coal, which well solves the problems in the prior art.

[0005] To achieve the above object, the technical solution adopted by the present invention is as follows: A weighbridge weighing system for ground sales of coal, including:

[0006] A data acquisition module for collecting weighbridge environmental data to compensate the vehicle weighing result;

[0007] A visual recognition module for identifying vehicle data and the form of the coal pile in the vehicle, and adjusting the vehicle position and the coal pile according to the recognition result;

[0008] An environmental data preprocessing module for preprocessing the environmental data collected by the data acquisition module;

[0009] A communication module for transmitting vehicle weighing data to a superior system;

[0010] A feedback module for feeding back vehicle weighing data to on-site staff;

[0011] A data processing module for processing relevant data of the data acquisition module, the environmental data preprocessing module, the communication module, the feedback module, and the visual recognition module.

[0012] Further, the data acquisition module includes:

[0013] A temperature sensor for measuring the temperature of the weighbridge environment;

[0014] A humidity sensor for measuring the humidity of the weighbridge environment;

[0015] An air pressure sensor for measuring the atmospheric pressure of the weighbridge environment;

[0016] A weighbridge body for measuring the weight of a vehicle.

[0017] Further, the visual recognition module includes:

[0018] A vehicle data recognition module for identifying the information collection of the vehicle body;

[0019] A coal pile 3D recognition module for identifying the collection of 3D data of the coal pile in the vehicle;

[0020] An adjustment module for adjusting the position of the vehicle body on the weighbridge according to the vehicle's center of gravity position and adjusting the 3D shape of the coal pile in the vehicle to adjust the shape of the coal pile.

[0021] Further, the vehicle recognition module includes:

[0022] A license plate recognition camera for identifying the license plate of a vehicle;

[0023] A vehicle position infrared sensor for measuring the position of a vehicle on the weighbridge.

[0024] Further, the coal pile 3D recognition module includes: a depth camera for capturing the three-dimensional shape, volume, and local structure information of the coal pile on the vehicle, and obtaining the point cloud data and depth map of the coal pile.

[0025] Further, the adjustment module includes:

[0026] A visual data analysis unit: for quantitatively analyzing the load distribution of the vehicle as a whole and the shape of the coal pile by using the license plate information, vehicle position, and coal pile 3D point cloud data output by the existing visual recognition module, and calculating the specific indicators of the deviation of the vehicle's center of gravity and the uneven distribution of the coal pile.

[0027] Real-time feedback unit: It is used to feedback vehicle center-of-gravity information and coal pile shape information to on-site staff, enabling the staff to adjust the vehicle position and coal pile shape according to the information.

[0028] Furthermore, the environmental data preprocessing module includes:

[0029] Preprocessing module, which is used to perform preprocessing work such as amplifying, filtering, and denoising the collected environmental data;

[0030] High-speed analog-to-digital converter, which is used to convert the preprocessed signal into a digital signal.

[0031] Furthermore, the communication module includes:

[0032] Communication interface unit, which is used to establish a physical connection with the superior system and each module;

[0033] Data transmission protocol unit, which is used to specify the format, transmission rate, data packet structure, and error detection and correction mechanism during data communication;

[0034] Data encoding unit, which is used to encode and encrypt the transmitted data;

[0035] Communication protocol conversion unit, which is used to convert the communication protocol used inside the system into the protocol required by the remote server or monitoring center.

[0036] Furthermore, the feedback module includes:

[0037] Voice broadcast unit, which is used to broadcast the measurement data by voice;

[0038] Alarm unit, which is used to alarm the vehicles with unqualified data;

[0039] Printing unit, which is used to print the measurement data;

[0040] Remote interaction unit, which is used for communication between the personnel in the weighbridge area and the remote staff

[0041] Furthermore, the data processing module includes:

[0042] Data fusion and algorithm processing unit, which is used to fuse the multi-source data output by the pressure sensor, environmental sensor, and vision recognition module, and dynamically correct the original weighing data in combination with the environmental compensation algorithm, and output the corrected data;

[0043] Data storage and caching unit, which is used to store historical data analysis.

[0044] Compared with the prior art, the present invention has the following beneficial effects:

[0045] The present invention realizes the acquisition and recognition of vehicle position, license plate information, and coal pile information inside the vehicle through a visual recognition module, enabling the weighbridge weighing system to quickly obtain various information of the vehicle. Through an environmental data preprocessing module, a data processing module, and a communication module, the data collected by the visual recognition module and the data acquisition module can be processed, analyzed, and uploaded, ensuring the accuracy of the weighing measurement data. Through a feedback module, the sound and physical feedback of the data are realized, improving the convenience for the staff to obtain the measurement data. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 is a system architecture diagram of the present invention;

[0047] Figure 2 is a schematic structural diagram of the data acquisition module of the present invention;

[0048] Figure 3 is a schematic structural diagram of the visual recognition module of the present invention;

[0049] Figure 4 is a schematic structural diagram of the environmental data preprocessing module of the present invention;

[0050] Figure 5 is a schematic structural diagram of the communication module of the present invention;

[0051] Figure 6 is a schematic structural diagram of the feedback module of the present invention;

[0052] Figure 7 is a schematic structural diagram of the data processing module of the present invention.

[0053] In the figure, 1 is the data acquisition module; 2 is the visual recognition module; 3 is the data processing module; 4 is the communication module; 5 is the environmental data preprocessing module; 6 is the feedback module. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0054] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0055] As Figures 1 to 7 shown, a weighbridge weighing system for ground coal sales includes:

[0056] The data acquisition module 1 is used to acquire the weighbridge environment data; the visual recognition module 2 is used to recognize the vehicle data and the morphology of the coal pile inside the vehicle; the environment data preprocessing module 5 is used to preprocess the environment data acquired by the data acquisition module 1; the communication module 4 is used to transmit the vehicle weighing data to the superior system; the feedback module 6 is used to feedback the vehicle weighing data to the on-site staff; the data processing module 3 is used to process the relevant data of the data acquisition module 1, the environment data preprocessing module 5, the communication module 4, the feedback module 6 and the visual recognition module 2.

[0057] In this embodiment, the data acquisition module 1 includes: a temperature sensor for measuring the temperature of the surrounding environment; a humidity sensor for measuring the humidity of the surrounding environment; a barometric pressure sensor for measuring the atmospheric pressure of the surrounding environment; and a weighbridge body for measuring the weight of the vehicle. By installing the temperature sensor, the humidity sensor and the barometric pressure sensor into the weighbridge system, then the environment data and the vehicle load data around the weighbridge are acquired by the temperature sensor, the humidity sensor and the barometric pressure sensor, and the acquired data is transmitted to the data processing module 3 for processing. The weighing data of the vehicle is adjusted by the processed environment data to ensure the accuracy of the weighing result.

[0058] In this embodiment, the visual recognition module 2 includes: a vehicle data recognition module for information acquisition of the vehicle body; a coal pile 3D recognition module for recognizing the morphology of the coal pile inside the vehicle body; and an adjustment module for adjusting the position of the vehicle body on the weighbridge according to the vehicle center of gravity position and adjusting the morphology of the coal pile in the vehicle by the 3D morphology of the coal pile.

[0059] The vehicle recognition module includes: a license plate recognition camera for recognizing the license plate information of the vehicle body; a vehicle position infrared sensor for measuring the position of the vehicle body on the weighbridge.

[0060] The coal pile 3D recognition module includes: a depth camera for capturing the three-dimensional shape, volume and local structure information of the coal pile on the vehicle, and obtaining the point cloud data and depth map of the coal pile.

[0061] The adjustment module includes: a visual data analysis unit: based on the license plate information recognized by the vehicle data recognition module, the position information of the vehicle body on the weighbridge, and the point cloud data and depth map of the coal pile inside the vehicle body obtained by the depth camera, quantitatively analyze the load distribution of the vehicle as a whole and the morphology of the coal pile, calculate the deviation of the vehicle center of gravity and the specific indexes of uneven coal pile distribution; divide the point cloud data of the coal pile area by grid or area, calculate the average height of each area, compare the difference between the maximum and minimum area heights, and obtain the degree of unevenness.

[0062] The calculation formula for the average height of the coal pile is:

[0063]

[0064] where h i is the height of the i-th point and N is the total number of points;

[0065] The calculation formula for the height uniformity of the coal pile includes:

[0066] Standard deviation (σ h ), which reflects the degree of dispersion of the coal pile height, and the calculation formula is

[0067]

[0068] The calculation formula for the coefficient of variation (CV) is:

[0069]

[0070] The lower the coefficient of variation index, the more uniform the distribution of the coal pile;

[0071] Real-time feedback unit: used to feedback the vehicle's center of gravity information and the coal pile shape information to on-site workers, enabling the workers to adjust the vehicle position and the coal pile shape according to the information, making the coal pile shape flat and evenly distributed within the vehicle body, preventing the coal pile from slipping off the vehicle during transportation due to uneven distribution, resulting in waste and pollution; using display devices such as display screens to receive the specific indicators of the vehicle's center of gravity deviation and uneven coal pile distribution calculated by the visual data analysis unit and reminding the on-site workers, enabling the workers to adjust the vehicle position and the coal pile shape according to the information. Among them, the real-time feedback unit can perform real-time feedback in the form of cooperation between sound and LED display screens;

[0072] The license plate of the vehicle is recognized by the license plate recognition camera, and the license plate information is transmitted to the cloud system through the communication module 4. The historical information of the vehicle is dispatched from the cloud system, and the weighing measurement information of the vehicle this time is output into the historical information of the vehicle. Subsequently, the depth camera captures the three-dimensional shape, volume, and local structure information of the coal pile, obtains the point cloud data and depth map of the coal pile, and then inputs the captured information into the visual data analysis unit. By constructing the convex hull of the coal pile or using the volume calculation method based on Alpha Shapes, the volume of the coal pile is estimated to reflect the total amount and distribution of the coal pile. At the same time, the thickness change or uneven characteristics of the local area are analyzed to analyze whether there are abnormal areas or problems of uneven local load in the coal pile. After the analysis is completed, feedback is performed through the real-time feedback unit to prompt the vehicle workers to make rectifications, improve vehicle safety, and combine with the vehicle position infrared sensor to detect the vehicle position on the weighbridge and remind the workers through the adjustment module to ensure that the vehicle's center of gravity is located at the center of the weighbridge during measurement, ensuring the measurement effect of the weighbridge on the vehicle.

[0073] In this embodiment, the environmental data preprocessing module 5 includes:

[0074] A preprocessing module for performing preprocessing work such as amplifying, filtering, and denoising the collected environmental data;

[0075] A high-speed analog-to-digital converter for converting the preprocessed signal into a digital signal;

[0076] Among them, the algorithm formula information in the preprocessing module can specifically refer to the calibration unit in the Chinese invention patent with the authorized publication number CN117516677A. There is no need to elaborate here. The preprocessing module filters, denoises, calibrates, and converts the format of the original data collected by the data collection module 1 to ensure the accuracy and consistency of the data, providing high-quality input for subsequent modeling. Subsequently, the processed original data is input into the high-speed analog-to-digital converter to convert the preprocessed signal into a digital signal, and then the digital signal is transmitted to the data processing module 3 for final processing and integration and output into the data processing module 3, thus realizing the preprocessing of environmental data.

[0077] In this embodiment, the communication module 4 includes:

[0078] A communication interface unit for establishing a physical connection with the superior system and each module;

[0079] A data transmission protocol unit for specifying the format, transmission rate, data packet structure, and error detection and correction mechanism of the data during communication;

[0080] A data encoding unit for encoding and encrypting the transmitted data;

[0081] A communication protocol conversion unit for converting the communication protocol used inside the system into the protocol required by the remote server or monitoring center;

[0082] Through the collaborative work of the units in the communication module 4, not only the real-time transmission of data and the stability of remote control are ensured, but also the reliability of the system and the data security are improved through redundant design and secure encoding.

[0083] In this embodiment, the feedback module 6 includes:

[0084] A voice broadcast unit for voice-broadcasting the weighing data of the vehicle body;

[0085] An alarm unit for alarming vehicles with unqualified weighing data;

[0086] A printing unit for printing the final weighing data of the vehicle;

[0087] A remote interaction unit for communication between personnel in the weighbridge area and remote staff;

[0088] The voice broadcast unit can play the weighing data of the vehicle body through sound, and at the same time, cooperate with the alarm unit to remind the staff whether the vehicle is overweight, ensuring the safety of the coal transport vehicle during transportation. Through the printing unit, the weighing data of the vehicle can be printed out, enabling the vehicle staff to quickly obtain a paper copy of the vehicle data for subsequent proof recording. Finally, when the weighbridge weighing system fails, the vehicle staff can communicate with the remote staff through the remote interaction unit, enabling the weighbridge staff to quickly maintain the weighbridge weighing system.

[0089] In this embodiment, the data processing module 3 includes:

[0090] A data fusion and algorithm processing unit for fusing multi-source data output by the pressure sensor, environmental sensor, and visual recognition module 2, and dynamically correcting the original weighing data in combination with the environmental compensation algorithm to output the corrected data;

[0091] A data storage and caching unit for storing the historical weighing data of the vehicle;

[0092] The data processing module 3 is the core part of the entire system, responsible for preprocessing, fusing, correcting, and controlling the original digital signals collected from the data acquisition module 1 and the visual recognition module 2, and cooperating with the processed compensation data of the environmental data preprocessing module 5 to output high-precision weighing data, and uploading the weighing data to the historical information of the vehicle in the cloud platform through a 5G or LoRa network, and using blockchain technology to ensure that the data cannot be tampered with.

[0093] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A weighbridge weighing system for ground sales of coal, characterized in that: Including: A data acquisition module, which is used to acquire the weighbridge environment data for compensating the vehicle weighing result; A vision recognition module, which is used to recognize the vehicle data and the shape of the coal pile in the vehicle, and adjust the vehicle position and the coal pile according to the recognition result; An environment data preprocessing module, which is used to preprocess the environment data collected by the data acquisition module; A communication module, which is used to transmit the vehicle weighing data to the superior system; A feedback module, which is used to feedback the vehicle weighing data to the on-site staff; A data processing module, which is used to process the relevant data of the data acquisition module, the environment data preprocessing module, the communication module, the feedback module and the vision recognition module.

2. The weighbridge weighing system for ground coal discharging according to claim 1, characterized in that: The data acquisition module includes: A temperature sensor, which is used to measure the temperature of the weighbridge environment; A humidity sensor, which is used to measure the humidity of the weighbridge environment; An air pressure sensor, which is used to measure the atmospheric pressure of the weighbridge environment; A weighbridge body, which is used to measure the weight of the vehicle.

3. The weighbridge weighing system for ground coal discharging according to claim 1, wherein: The vision recognition module includes: A vehicle data recognition module, which is used to recognize the information acquisition of the vehicle body; A coal pile 3D recognition module, which is used to collect the 3D data of the coal pile in the vehicle; An adjustment module, which is used to adjust the position of the vehicle body on the weighbridge according to the vehicle center of gravity position and adjust the shape of the coal pile by adjusting the 3D shape of the coal pile in the vehicle.

4. The weighbridge weighing system for ground coal delivery according to claim 3, characterized in that: The vehicle recognition module includes: A license plate recognition camera, which is used to recognize the license plate of the vehicle; A vehicle position infrared sensor, which is used to measure the position of the vehicle on the weighbridge.

5. The weighbridge weighing system for ground coal discharging according to claim 3, characterized in that: The coal pile 3D recognition module includes: a depth camera, which is used to capture the three-dimensional shape, volume and local structure information of the coal pile on the vehicle, and obtain the point cloud data and depth map of the coal pile.

6. The weighbridge weighing system for ground coal payment according to claim 3, characterized in that: The adjustment module includes: A vision data analysis unit: which is used to quantitatively analyze the load distribution of the whole vehicle and the shape of the coal pile by using the license plate information, vehicle position and coal pile 3D point cloud data output by the existing vision recognition module, and calculate the specific indexes of the deviation of the vehicle center of gravity and the uneven distribution of the coal pile. A real-time feedback unit: which is used to feedback the vehicle center of gravity information and the coal pile shape information to the on-site staff, so that the staff can adjust the vehicle position and the coal pile shape according to the information.

7. The weighbridge weighing system for ground coal payment according to claim 1, characterized in that: The environment data preprocessing module includes: A preprocessing module, which is used to perform preprocessing work such as amplification, filtering and denoising on the collected environment data; A high-speed analog-to-digital converter, which is used to convert the preprocessed signal into a digital signal.

8. A weighbridge weighing system for ground coal payment according to claim 1, characterized in that: The communication module includes: A communication interface unit, which is used to establish a physical connection with the superior system and each module; A data transmission protocol unit, which is used to specify the format, transmission rate, data packet structure and error detection and correction mechanism of the data during the communication process; A data encoding unit, which is used to encode and encrypt the transmitted data; A communication protocol conversion unit, which is used to convert the communication protocol used inside the system into the protocol required by the remote server or monitoring center.

9. The weighbridge weighing system for ground coal sales according to claim 1, characterized in that: The feedback module includes: A voice broadcast unit, which is used to broadcast the measurement data by voice; An alarm unit, which is used to alarm the vehicle with unqualified data; A printing unit, which is used to print the measurement data; A remote interaction unit, which is used for the communication between the personnel in the weighbridge area and the remote staff.

10. A weighbridge weighing system for ground coal payment according to claim 1, characterized in that: The data processing module includes: A data fusion and algorithm processing unit, which is used to fuse multi-source data output by a pressure sensor, an environmental sensor and a vision recognition module, and dynamically correct the original weighing data in combination with an environmental compensation algorithm, and output the corrected data; A data storage and caching unit, which is used to store historical data analysis.

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