Calibration method, device and equipment for weighing system of large-scale transport vehicles

Abstract

The present application relates to a calibration method for a weighing system for large-scale transport vehicles, including: providing at least one standard vehicle; the standard vehicle includes at least two axles, and obtaining the agreed true value of the axle weight of each axle of the standard vehicle; making at least one standard vehicle pass through the weighing system to be calibrated under a first condition to obtain the axle weight coefficient; based on the axle weight coefficient, making at least one standard vehicle pass through the weighing system to be calibrated under a second condition to obtain the speed coefficient; based on the axle weight coefficient and the speed coefficient, making at least one standard vehicle pass through the weighing system to be calibrated under a third condition to obtain the position coefficient; based on the axle weight coefficient, the speed coefficient and the position coefficient, the measured value of the weighing system to be calibrated is corrected. The present application realizes the accurate calibration of the weighing sensor of large-scale transport vehicles by using standard vehicles and based on multiple variables such as axle weight, speed and position, and solves the problem that large-scale transport vehicles cannot be calibrated in dynamic weighing systems.

Description

Technical Field

[0001] The present application relates to the technical field of non-stop weighing, and in particular to a calibration method, device and equipment suitable for a weighing system of a large-scale transport vehicle. Background Art

[0002] In the field of non-stop weighing, there is also a clear distinction between verification and calibration. Verification refers to comparing the measured value of the bar weighing sensor with the national standard or internationally recognized standard weight to verify its accuracy and reliability. This process is usually performed by a qualified metrology agency to ensure that the measurement error of the sensor is within the allowable range. Calibration refers to the zero point adjustment, sensitivity setting and other operations of the bar weighing sensor according to the specific application environment and requirements before actual use to ensure that the measurement results under specific conditions meet expectations. In short, verification emphasizes the absolute accuracy verification of the sensor, while calibration is to adapt to specific applications and ensure the accuracy and consistency of the measurement data. The two are equally important to the production and use of bar weighing sensors, and their emphasis is also different.

[0003] However, in the actual application of large-scale transport weighing sensors, due to the particularity of large-scale transport vehicles, such as large loads and long dimensions, existing calibration technologies and methods are often difficult to meet the needs. Traditional calibration methods mostly use standard objects with fixed weights. These standard objects are far from simulating the actual working conditions of large-scale transport vehicles in terms of size and weight, resulting in large measurement errors in the calibrated sensors in actual applications. In addition, large-scale transport vehicles will be affected by various factors such as road conditions, driving speed, and vehicle position during driving, which further increases the difficulty of calibration. Therefore, it is particularly important to develop a calibration method for large-scale transport vehicle weighing systems that can effectively solve the above problems. Summary of the invention

[0004] This application proposes a new calibration method, which achieves accurate calibration of weighing sensors for large-scale transport vehicles by using standard vehicles and considering multiple variables such as axle weight, speed and position, thereby improving the accuracy and reliability of measurements.

[0005] In an embodiment of the present application, a calibration method applicable to a large-piece transport vehicle weighing system is provided, which is used to calibrate a weighing system to be calibrated, wherein the weighing system to be calibrated is used to weigh the large-piece transport vehicle, and the calibration method includes:

[0006] Providing at least one standard vehicle; the standard vehicle comprises at least two axles, and obtaining a conventional true value of the axle weight of each axle of the standard vehicle;

[0007] Under the first condition, at least one standard vehicle is driven through the weighing system to be calibrated to obtain an axle weight coefficient;

[0008] Based on the axle weight coefficient, at least one standard vehicle is driven through the weighing system to be calibrated under a second condition to obtain a speed coefficient;

[0009] Based on the axle load coefficient and the speed coefficient, at least one standard vehicle is driven through the weighing system to be calibrated under a third condition to obtain a position coefficient;

[0010] Based on the axle load factor, the speed factor and the position factor, the measured value of the weighing system to be calibrated is corrected;

[0011] The first condition, the second condition and the third condition are respectively to make at least one standard vehicle pass through the weighing system to be calibrated at least once when the single variables are axle weight, speed and position.

[0012] In the above calibration method applicable to the weighing system of large-piece transport vehicles, as a preferred solution, the first condition includes:

[0013] Allow at least one standard vehicle to pass through the weighing system to be calibrated at least once at the same speed and at the same position;

[0014] Each time you drive past the weighing system to be calibrated:

[0015] Using the same standard vehicle, the standard vehicle has at least two axles with different axle weights;

[0016] Alternatively, different standard vehicles are used while keeping the vehicle driving order the same, and the different standard vehicles have different axle weights.

[0017] In the above calibration method applicable to the weighing system of large-piece transport vehicles, as a preferred solution, the second condition includes:

[0018] Make the same standard vehicle drive past the weighing system to be calibrated at least once at the same position and at different speeds.

[0019] In the above calibration method applicable to the weighing system of large-scale transport vehicles, as a preferred solution, the third condition includes:

[0020] Make the same standard vehicle pass the weighing system to be calibrated at least once at the same speed and in different positions.

[0021] In the above calibration method applicable to the weighing system of large-piece transport vehicles, as a preferred solution, the step of obtaining the axle weight coefficient includes:

[0022] Driving at least one standard vehicle through the weighing system to be calibrated under a first condition to obtain at least one first axle weight measurement value corresponding to each axle;

[0023] Obtaining a first axle weight measurement mean value of each axle according to at least one first axle weight measurement value of each axle;

[0024] Based on the first axle weight measurement mean value and the axle weight agreed true value corresponding to at least one of the axles, a least squares fitting is performed to obtain an axle weight coefficient; the axle weight coefficient includes an axle weight compensation slope and an axle weight compensation constant.

[0025] In the above calibration method applicable to the weighing system of large-piece transport vehicles, as a preferred solution, the acquisition of the speed coefficient includes:

[0026] Driving at least one standard vehicle through the weighing system to be calibrated under a second condition to obtain at least one second axle weight measurement value corresponding to each axle;

[0027] Obtaining a second axle weight measurement mean value of each axle according to at least one second axle weight measurement value of each axle;

[0028] Based on the second axle weight measurement mean value and the axle weight agreed true value corresponding to at least one of the axles, a least squares fitting is performed to obtain a speed coefficient; the speed coefficient includes a speed compensation slope and a speed compensation constant.

[0029] In the above calibration method applicable to the weighing system of large-piece transport vehicles, as a preferred solution, the obtaining of the position coefficient includes:

[0030] Driving at least one standard vehicle through the weighing system to be calibrated under a third condition to obtain at least one third axle weight measurement value corresponding to each axle;

[0031] Obtaining a third axle weight measurement mean value of each axle according to at least one third axle weight measurement value of each axle;

[0032] Based on the third axle weight measurement mean value and the axle weight agreed true value respectively corresponding to at least one of the axles, a least squares fitting is performed to obtain a position coefficient; the position coefficient includes a position compensation slope and a position compensation constant.

[0033] In the above calibration method applicable to the weighing system of large-piece transport vehicles, as a preferred solution, the measured value of the weighing system to be calibrated is corrected based on the axle load coefficient, speed coefficient and position coefficient, including:

[0034] When the target vehicle passes the weighing system to be calibrated, obtaining the measured axle weight, measured speed and measured position of the target vehicle;

[0035] Based on the measured axle weight and the axle weight coefficient, the measured axle weight is corrected for the first time to obtain the first measured axle weight;

[0036] Based on the measured speed and the speed coefficient, a second correction is performed on the first measured axle weight to obtain a second measured axle weight;

[0037] Based on the measured position and position coefficient, the second measured axle weight is corrected for the third time to obtain the actual target axle weight.

[0038] The present application also provides a calibration device applicable to a large-piece transport vehicle weighing system, which is used to calibrate a weighing system to be calibrated, wherein the weighing system to be calibrated is used to weigh the large-piece transport vehicle, and the calibration device includes:

[0039] An initial input module, the initial input module is used to provide at least one standard vehicle; the standard vehicle includes at least two axles, and obtains the conventional true value of the axle weight of each axle of the standard vehicle;

[0040] an axle weight coefficient acquisition module, the axle weight coefficient acquisition module being used to make at least one standard vehicle pass through the weighing system to be calibrated under a first condition to acquire the axle weight coefficient;

[0041] A speed coefficient acquisition module, the speed coefficient acquisition module is used to make at least one standard vehicle pass through the weighing system to be calibrated under a second condition based on the axle weight coefficient to acquire the speed coefficient;

[0042] A position coefficient acquisition module, the position coefficient acquisition module is used to obtain the position coefficient by making at least one standard vehicle pass through the weighing system to be calibrated under a third condition based on the axle load coefficient and the speed coefficient;

[0043] A correction module, the correction module is used to correct the measured value of the weighing system to be calibrated based on the axle load coefficient, the speed coefficient and the position coefficient;

[0044] The first condition, the second condition and the third condition are respectively to make at least one standard vehicle pass through the weighing system to be calibrated at least once when the single variables are axle weight, speed and position.

[0045] The present application also provides a calibration device suitable for a large-scale transport vehicle weighing system, the device comprising: a memory, a processor, and a calibration program stored in the memory and executable on the processor, the calibration program implementing the calibration method described above when executed by the processor.

[0046] According to the calibration method, device and equipment applicable to the weighing system of large-scale transport vehicles of the above-mentioned embodiment, by providing at least one standard vehicle and obtaining the agreed true value of the axle weight of each axle of the standard vehicle, the standard vehicle is then driven through the weighing system to be calibrated under the first condition with the single variable being the axle weight to obtain the axle weight coefficient; the standard vehicle is then driven through the weighing system to be calibrated under the second condition with the single variable being the speed to obtain the speed coefficient; finally, the standard vehicle is driven through the weighing system to be calibrated under the third condition with the single variable being the position to obtain the position coefficient, and the measured value of the sensor is corrected based on the axle weight coefficient, the speed coefficient and the position coefficient. This method can more accurately simulate the actual working conditions of large-scale transport vehicles, thereby bringing higher measurement accuracy and reliability. In addition, calibration in this way not only solves the problem that the weight and size of the standard object in the traditional calibration method cannot simulate the large-scale transport vehicle, but also can effectively reduce the measurement errors caused by factors such as road conditions, driving speed and vehicle position changes, improves the calibration efficiency and practicality, and ensures the accuracy and stability of the weighing system of large-scale transport vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 Flow chart (I) of a calibration method for a large-scale transport vehicle weighing system provided in an embodiment of the present application;

[0048] Figure 2 Flow chart (II) of a calibration method for a large-scale transport vehicle weighing system provided in an embodiment of the present application;

[0049] Figure 3 Flow chart (III) of a calibration method for a large-scale transport vehicle weighing system provided in an embodiment of the present application;

[0050] Figure 4 Flow chart (IV) of a calibration method for a large-scale transport vehicle weighing system provided in an embodiment of the present application;

[0051] Figure 5 Flow chart (V) of a calibration method for a large-scale transport vehicle weighing system provided in an embodiment of the present application;

[0052] Figure 6 A schematic diagram of the structure of a calibration device suitable for a large-scale transport vehicle weighing system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0053] The present application is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are intended to enable the present application to be better understood. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0054] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0055] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0056] The embodiment of the present application provides a calibration method for a weighing system of a large transport vehicle. The core content of the method is to calibrate the weighing system to be calibrated for the axle weights under different conditions to obtain measurement results that are close to the true value; different conditions include but are not limited to: different axle weights, different speeds and different positions. The lower limit threshold and upper limit threshold of the axle weight measured by the weighing system to be calibrated are 2T and 20T respectively. When calibrating, the standard vehicle is deployed in equal proportions of 1 / 8, 1 / 4, 3 / 8, 1 / 2, 5 / 8, 3 / 4, and 7 / 8 when passing through the weighing system to be calibrated, that is, the vehicle driving path is evenly dispersed in each part of the weighing system to be calibrated as much as possible. The corresponding correction coefficient is calculated for each situation. When all axle weight tests for all situations are completed, the axle weight is linearly regressed by the least squares method, and all data are linearized to meet the error requirements.

[0057] Please refer to Figure 1The present application proposes a new calibration method, which realizes the accurate calibration of the weighing sensor of a large-piece transport vehicle by using a standard vehicle and considering multiple variables such as axle weight, speed and position, thereby improving the accuracy and reliability of the measurement. Based on this, the present application provides a calibration method for a weighing system of a large-piece transport vehicle in an exemplary embodiment, which is used to calibrate a weighing system to be calibrated, and the weighing system to be calibrated is used to weigh the large-piece transport vehicle. The calibration method includes the following steps:

[0058] Step S101, providing at least one standard vehicle; the standard vehicle includes at least two axles, and obtaining the agreed true value of the axle weight of each axle of the standard vehicle.

[0059] In some embodiments, by providing at least one standard vehicle, the standard vehicle needs to have physical properties similar to those of the actual transport vehicle, such as weight distribution, number of axles, etc., to ensure the effectiveness and relevance of the calibration process. In order to achieve this goal, each axle of these standard vehicles needs to be accurately weighed to obtain their true axle weight agreement. This step is crucial because it provides the benchmark data required in the subsequent calibration process to ensure the accuracy of the calibration results. In addition, choosing a suitable standard vehicle also helps to simulate different transportation scenarios and improve the scope of application of the calibration method.

[0060] Step S102: Make at least one standard vehicle pass through the weighing system to be calibrated under the first condition to obtain the axle weight coefficient.

[0061] In some embodiments, by driving a standard vehicle with different axle weights through the weighing system to be calibrated while keeping other variables (such as speed and position) unchanged, the response of the sensor to different axle weights can be effectively evaluated, and the axle weight coefficient can be calculated. The key to this step is to ensure the consistency and repeatability of the test conditions in order to accurately capture the relationship between the sensor output and the axle weight. The axle weight coefficient obtained in this way provides a basis for the subsequent speed and position coefficient calibration, and helps to eliminate the measurement errors caused by axle weight changes.

[0062] Step S103: Based on the axle load coefficient, at least one standard vehicle is driven through the weighing system to be calibrated under the second condition to obtain a speed coefficient.

[0063] In some embodiments, by using the obtained axle load coefficient as a correction factor, the next step is to change the speed of the standard vehicle while keeping the axle load unchanged to determine how the speed change affects the sensor's measurement results, and finally obtain the speed coefficient. This process requires precise control of the vehicle's speed while ensuring that the vehicle passes the sensor in a stable state to avoid interference from external factors. Obtaining the speed coefficient is crucial to adjusting the sensor's response characteristics at different speeds, which helps to further improve measurement accuracy.

[0064] Step S104: Based on the axle load coefficient and the speed coefficient, at least one standard vehicle is driven through the weighing system to be calibrated under a third condition to obtain a position coefficient.

[0065] In some embodiments, by combining the axle load coefficient and speed coefficient obtained in the first two steps, the next step is to change the position of the standard vehicle relative to the sensor while keeping the axle load and speed constant, so as to evaluate the impact of the position change on the sensor measurement results and obtain the position coefficient. This step requires precise control of the vehicle's position, which may involve the vehicle passing the sensor with different paths or offsets. The determination of the position coefficient helps to compensate for the measurement deviation caused by the change in vehicle position, further improving the comprehensiveness and accuracy of the calibration method.

[0066] Step S105: Based on the axle weight coefficient, speed coefficient and position coefficient, the measured value of the weighing system to be calibrated is corrected. The first condition, the second condition and the third condition are respectively to make at least one standard vehicle pass through the weighing system to be calibrated at least once when the single variables are axle weight, speed and position.

[0067] In some embodiments, the theoretical axial weight distribution is 1T, 3T, 5T, 7T, 9T, 11T, 13T, 15T, 17T, 19T, 21T. Among them:

[0068] For 1T and 3T, the weight is relatively small, so a two-axle vehicle can be used for testing;

[0069] For 5T, 7T, 9T, and 11T, which meet the weight limit range of 4-axle vehicles, a 4-axle vehicle can be selected for testing;

[0070] For 13T, 15T, 17T, 19T, and 21T, it is difficult to find an ordinary vehicle for testing in actual vehicles to achieve the actual distribution of the axle weight. Therefore, the weight above 17T / 19T should be corrected by a prediction model through linear regression. For example, if a 6-axle vehicle is used for testing, the axle weight distribution of the 6-axle vehicle is 5T, 9T, 12T, 15T, 5T and 2T.

[0071] In some embodiments, by comprehensively applying the above three coefficients - axle weight coefficient, speed coefficient and position coefficient, the original measurement value of the calibration sensor is corrected, which can significantly improve the accuracy and reliability of the large-scale transport vehicle weighing system. This multivariable comprehensive correction method can not only effectively reduce the impact of external factors on the measurement results, but also ensure stable measurement performance under various complex working conditions. Ultimately, the corrected sensor will be more adaptable to actual application needs and provide reliable data support for the safe operation of large-scale transport vehicles.

[0072] In the above calibration method applicable to the weighing system of large-piece transport vehicles, as a preferred solution, the first condition includes:

[0073] Allow at least one standard vehicle to pass through the weighing system to be calibrated at least once at the same speed and at the same position;

[0074] Each time you drive past the weighing system to be calibrated:

[0075] Using the same standard vehicle, the standard vehicle has at least two axles with different axle weights;

[0076] Alternatively, different standard vehicles are used while keeping the vehicle driving order the same, and the different standard vehicles have different axle weights.

[0077] In the above calibration method applicable to the weighing system of large-piece transport vehicles, as a preferred solution, the second condition includes:

[0078] Make the same standard vehicle drive past the weighing system to be calibrated at least once at the same position and at different speeds.

[0079] In the above calibration method applicable to the weighing system of large-scale transport vehicles, as a preferred solution, the third condition includes:

[0080] Make the same standard vehicle pass the weighing system to be calibrated at least once at the same speed and in different positions.

[0081] In the above calibration method applicable to the weighing system of large-piece transport vehicles, as a preferred solution, the step of obtaining the axle load coefficient in step S102 includes the following steps:

[0082] Step S201: Make at least one standard vehicle pass through the weighing system to be calibrated under a first condition to obtain at least one first axle weight measurement value corresponding to each axle.

[0083] Step S202: Obtain a first axle weight measurement mean value of each axle according to at least one first axle weight measurement value of each axle.

[0084] Step S203, performing least squares fitting based on the first axle weight measurement mean value and the axle weight agreed true value corresponding to at least one of the axles to obtain an axle weight coefficient; the axle weight coefficient includes an axle weight compensation slope and an axle weight compensation constant.

[0085] In the above calibration method applicable to the weighing system of large-piece transport vehicles, as a preferred solution, the obtaining of the speed coefficient in step S103 includes the following steps:

[0086] Step S301: Make at least one standard vehicle pass through the weighing system to be calibrated under a second condition to obtain at least one second axle weight measurement value corresponding to each axle.

[0087] Step S302: Obtain a second axle weight measurement mean value of each axle according to at least one second axle weight measurement value of each axle.

[0088] Step S303: performing least squares fitting based on the second axle weight measurement mean value and the axle weight agreed true value corresponding to at least one of the axles to obtain a speed coefficient; the speed coefficient includes a speed compensation slope and a speed compensation constant.

[0089] In the above calibration method applicable to the weighing system of large-piece transport vehicles, as a preferred solution, the obtaining of the position coefficient in step S104 includes the following steps:

[0090] Step S401: Make at least one standard vehicle pass through the weighing system to be calibrated under a third condition to obtain at least one third axle weight measurement value corresponding to each axle.

[0091] Step S402: Obtain a third axle weight measurement mean value of each axle according to at least one third axle weight measurement value of each axle.

[0092] Step S403, performing least square fitting based on the third axle weight measurement mean value and the axle weight agreed true value corresponding to at least one of the axles to obtain a position coefficient; the position coefficient includes a position compensation slope and a position compensation constant.

[0093] In the above calibration method applicable to the weighing system of large-piece transport vehicles, as a preferred solution, the step S105 of correcting the measured value of the weighing system to be calibrated based on the axle load coefficient, speed coefficient and position coefficient includes:

[0094] Step S501: When a target vehicle passes the weighing system to be calibrated, the actual axle weight, the actual speed and the actual position of the target vehicle are obtained.

[0095] Step S502: Based on the measured axle weight and the axle weight coefficient, perform a first correction on the measured axle weight to obtain a first measured axle weight.

[0096] Step S503: Based on the measured speed and the speed coefficient, perform a second correction on the first measured axle weight to obtain a second measured axle weight.

[0097] Step S504: Based on the actual measured position and the position coefficient, the second measured axle weight is corrected for the third time to obtain the real target axle weight.

[0098] In some embodiments, the axle load factor is calculated as follows:

[0099]

[0100] Among them, a l and b l are the axle load compensation slope and axle load compensation constant respectively; W i is the mean value of the first axle load measurement of the i-th axis, that is, the average value of at least one first axle load measurement; S i is the agreed true value of the axle weight of the ith axle; n is the number of axles passing through the weighing system to be calibrated.

[0101] In some embodiments, the speed factor is calculated as follows:

[0102]

[0103] Among them, a s and b s are speed compensation slope and speed compensation constant respectively; W j is the second axle weight measurement mean of the jth axle, that is, the average value of at least one second axle weight measurement value; S j is the agreed true value of the axle weight of the jth axle; m is the number of axles passing through the weighing system to be calibrated.

[0104] In some embodiments, the axle load factor is calculated as follows:

[0105]

[0106] Among them, a p and b p are the position compensation slope and position compensation constant respectively; W k is the third axis re-measurement mean of the kth axis, that is, the average value of at least one third week measurement; S k is the agreed true value of the axle weight of the kth axis; v is the number of axes passing through the weighing system to be calibrated.

[0107] In some embodiments, the actual target axle weight is calculated as follows:

[0108] W 真 =a p [a s (al W 测 +b l )+b s ]+b p ;

[0109] Among them, W 真 is the actual target axle weight, W 测 is the measured value of axle weight.

[0110] The present application also provides a calibration device applicable to a large-piece transport vehicle weighing system, which is used to calibrate a weighing system to be calibrated, wherein the weighing system to be calibrated is used to weigh the large-piece transport vehicle, and the calibration device includes:

[0111] An initial input module 601, the initial input module 60 is used to provide at least one standard vehicle; the standard vehicle includes at least two axles, and obtains the conventional true value of the axle weight of each axle of the standard vehicle;

[0112] an axle weight coefficient acquisition module 602, the axle weight coefficient acquisition module 602 is used to make at least one standard vehicle pass through the weighing system to be calibrated under a first condition to acquire the axle weight coefficient;

[0113] A speed coefficient acquisition module 603, the speed coefficient acquisition module 603 is used to obtain the speed coefficient by making at least one standard vehicle pass through the weighing system to be calibrated under a second condition based on the axle load coefficient;

[0114] A position coefficient acquisition module 604, the position coefficient acquisition module 604 is used to obtain the position coefficient by making at least one standard vehicle pass through the weighing system to be calibrated under a third condition based on the axle load coefficient and the speed coefficient;

[0115] The correction module 605 is used to correct the measured value of the weighing system to be calibrated based on the axle weight coefficient, the speed coefficient and the position coefficient; wherein the first condition, the second condition and the third condition are respectively to make at least one standard vehicle pass through the weighing system to be calibrated at least once when the single variables are axle weight, speed and position.

[0116] An embodiment of the present application also provides a calibration device suitable for a large-scale transport vehicle weighing system, the device comprising: a memory, a processor, and a calibration program stored in the memory and executable on the processor, the calibration program implementing the calibration method described above when executed by the processor.

[0117] Those skilled in the art will appreciate that all or part of the functions of the various methods in the above-mentioned embodiments can be implemented by hardware or by computer programs. When all or part of the functions in the above-mentioned embodiments are implemented by computer programs, the program can be stored in a computer-readable storage medium, and the storage medium can include: read-only memory, random access memory, disk, optical disk, hard disk, etc., and the program is executed by a computer to implement the above-mentioned functions. For example, the program is stored in the memory of the device, and when the program in the memory is executed by the processor, all or part of the above-mentioned functions can be implemented. In addition, when all or part of the functions in the above-mentioned embodiments are implemented by computer programs, the program can also be stored in a storage medium such as a server, another computer, disk, optical disk, flash disk or mobile hard disk, and can be downloaded or copied and saved in the memory of the local device, or the system of the local device is updated, and when the program in the memory is executed by the processor, all or part of the functions in the above-mentioned embodiments can be implemented.

[0118] The above specific examples are used to illustrate the present application, which is only used to help understand the present application and is not intended to limit the present application. For technicians in the technical field to which the present application belongs, they can also make some simple deductions, deformations or substitutions based on the ideas of the present application.

Claims

1. A calibration method for a large-cargo transport vehicle weighing system, used to calibrate a weighing system to be calibrated, wherein the weighing system to be calibrated is used to weigh the large-cargo transport vehicle, and is characterized in that: The calibration method comprises: Providing at least one standard vehicle; the standard vehicle comprises at least two axles, and obtaining a conventional true value of the axle weight of each axle of the standard vehicle; Under the first condition, at least one standard vehicle is driven through the weighing system to be calibrated to obtain an axle weight coefficient; Based on the axle weight coefficient, at least one standard vehicle is driven through the weighing system to be calibrated under a second condition to obtain a speed coefficient; Based on the axle load coefficient and the speed coefficient, at least one standard vehicle is driven through the weighing system to be calibrated under a third condition to obtain a position coefficient; Based on the axle load factor, the speed factor and the position factor, the measured value of the weighing system to be calibrated is corrected; The first condition, the second condition and the third condition are respectively to make at least one standard vehicle pass through the weighing system to be calibrated at least once when the single variables are axle weight, speed and position.

2. The calibration method for a large-cargo transport vehicle weighing system according to claim 1, characterized in that: The first condition includes: Allow at least one standard vehicle to pass through the weighing system to be calibrated at least once at the same speed and at the same position; Each time you drive past the weighing system to be calibrated: Using the same standard vehicle, the standard vehicle has at least two axles with different axle weights; Alternatively, different standard vehicles are used while keeping the vehicle driving order the same, and the different standard vehicles have different axle weights.

3. The calibration method for a large-piece transport vehicle weighing system according to claim 1, characterized in that: The second condition includes: Make the same standard vehicle drive past the weighing system to be calibrated at least once at the same position and at different speeds.

4. The calibration method for a large-piece transport vehicle weighing system according to claim 1, characterized in that: The third condition includes: Make the same standard vehicle pass the weighing system to be calibrated at least once at the same speed and in different positions.

5. The calibration method for a large-cargo transport vehicle weighing system according to claim 1, characterized in that: The obtaining of the axle load coefficient includes: Driving at least one standard vehicle through the weighing system to be calibrated under a first condition to obtain at least one first axle weight measurement value corresponding to each axle; According to at least one first axle weight measurement value of each axle, obtaining a measurement mean of the first axle weight measurement value of each axle; Based on the first axle weight measurement mean value and the axle weight agreed true value corresponding to at least one of the axles, a least squares fitting is performed to obtain an axle weight coefficient; the axle weight coefficient includes an axle weight compensation slope and an axle weight compensation constant.

6. The calibration method for a large-cargo transport vehicle weighing system according to claim 5, characterized in that: The acquisition speed coefficient includes: Driving at least one standard vehicle through the weighing system to be calibrated under a second condition to obtain at least one second axle weight measurement value corresponding to each axle; Obtaining a second axle weight measurement mean value of each axle according to at least one second axle weight measurement value of each axle; Based on the second axle weight measurement mean value and the axle weight agreed true value corresponding to at least one of the axles, a least squares fitting is performed to obtain a speed coefficient; the speed coefficient includes a speed compensation slope and a speed compensation constant.

7. The calibration method for a large-cargo transport vehicle weighing system according to claim 6, characterized in that: The obtaining of the position coefficient comprises: Driving at least one standard vehicle through the weighing system to be calibrated under a third condition to obtain at least one third axle weight measurement value corresponding to each axle; Obtaining a third axle weight measurement mean value of each axle according to at least one third axle weight measurement value of each axle; Based on the third axle weight measurement mean value and the axle weight agreed true value respectively corresponding to at least one of the axles, a least squares fitting is performed to obtain a position coefficient; the position coefficient includes a position compensation slope and a position compensation constant.

8. The calibration method for a large-cargo transport vehicle weighing system according to claim 7, characterized in that: The method of correcting the measured value of the weighing system to be calibrated based on the axle load coefficient, the speed coefficient and the position coefficient includes: When the target vehicle passes the weighing system to be calibrated, obtaining the measured axle weight, measured speed and measured position of the target vehicle; Based on the measured axle weight and the axle weight coefficient, the measured axle weight is corrected for the first time to obtain the first measured axle weight; Based on the measured speed and the speed coefficient, a second correction is performed on the first measured axle weight to obtain a second measured axle weight; Based on the measured position and position coefficient, the second measured axle weight is corrected for the third time to obtain the actual target axle weight.

9. A calibration device for a large-cargo transport vehicle weighing system, used for calibrating a weighing system to be calibrated, wherein the weighing system to be calibrated is used for weighing the large-cargo transport vehicle, characterized in that: The calibration device comprises: An initial input module, the initial input module is used to provide at least one standard vehicle; the standard vehicle includes at least two axles, and the axle weight of each axle of the standard vehicle is inputted as a true value; an axle weight coefficient acquisition module, the axle weight coefficient acquisition module being used to make at least one standard vehicle pass through the weighing system to be calibrated under a first condition to acquire the axle weight coefficient; A speed coefficient acquisition module, the speed coefficient acquisition module is used to make at least one standard vehicle pass through the weighing system to be calibrated under a second condition based on the axle weight coefficient to acquire the speed coefficient; A position coefficient acquisition module, the position coefficient acquisition module is used to obtain the position coefficient by making at least one standard vehicle pass through the weighing system to be calibrated under a third condition based on the axle load coefficient and the speed coefficient; A correction module, the correction module is used to correct the measured value of the weighing system to be calibrated based on the axle load coefficient, the speed coefficient and the position coefficient; The first condition, the second condition and the third condition are respectively to make at least one standard vehicle pass through the weighing system to be calibrated at least once when the single variables are axle weight, speed and position.

10. A calibration device suitable for a large-scale transport vehicle weighing system, characterized in that: The device comprises: a memory, a processor, and a calibration program stored in the memory and executable on the processor, wherein the calibration program implements the calibration method according to any one of claims 1 to 8 when executed by the processor.

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