CN109883530B - Method and device for determining position of weighing sensor - Google Patents
Method and device for determining position of weighing sensor Download PDFInfo
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- CN109883530B CN109883530B CN201910232943.XA CN201910232943A CN109883530B CN 109883530 B CN109883530 B CN 109883530B CN 201910232943 A CN201910232943 A CN 201910232943A CN 109883530 B CN109883530 B CN 109883530B
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Abstract
The embodiment of the application provides a position determining method and a position determining device for a weighing sensor, which are applied to a truck scale comprising a weighing platform and the weighing sensor supporting the weighing platform, and the method comprises the following steps: carrying out static mechanical analysis on the truck scale to obtain the corresponding relation among all the moments; determining a first position of the weighing sensor according to the corresponding relation between the moments; and dynamically adjusting the first position of the weighing sensor, detecting whether the automobile can pass through the weighing platform after dynamic adjustment in a balanced manner, and if so, taking the position after dynamic adjustment as the position of the weighing sensor. By the method, when the weighing platform is subjected to loads of different forms generated by vehicles, the weighing sensor is stressed in a balanced manner, the structure is stable, damage of the weighing sensor due to unbalanced stress is reduced, and the service life of the weighing sensor is prolonged.
Description
Technical Field
The application relates to the field of automobile weighing, in particular to a method and a device for determining the position of a weighing sensor.
Background
The dynamic truck scale is widely applied to dynamic weighing systems of cargo vehicles such as expressways, mines, ports and the like, the sensor structure of the scale body is the most important part of the structural design of the whole weighing scale body, and the arrangement condition of the sensor directly influences the overall stability and the acquisition accuracy of the scale body and the service life of the sensor.
Traditional weighing sensor sets up within the weighing platform edge, and the whole atress condition is not good, may appear the condition that the weighing platform topples when the length of weighing platform is short at the vehicle in-process that traveles, influences the overall stability of dynamic truck scale, has increased the later maintenance cost to the life of sensor has been shortened.
Disclosure of Invention
In order to solve the above problem, embodiments of the present application provide a method and an apparatus for determining a position of a load cell.
In a first aspect, an embodiment of the present application provides a method for determining a position of a weighing sensor, which is applied to a truck scale, where the truck scale includes a weighing platform and the weighing sensor supporting the weighing platform, and the method includes:
carrying out static mechanical analysis on the truck scale to obtain the corresponding relation among the supporting force moment of the weighing sensor on the weighing platform, the gravity moment of the vehicle, the friction force moment of the vehicle on the weighing platform and the gravity moment of the weighing platform;
determining the distance between the weighing sensor and the edge of the weighing platform when the automobile is balanced and stops at each position of the weighing platform statically according to the corresponding relation, and determining the distance as the first position of the weighing sensor;
and dynamically adjusting the first position of the weighing sensor, detecting whether the automobile can pass through the weighing platform after dynamic adjustment in a balanced manner, and taking the position after dynamic adjustment as the position of the weighing sensor if the automobile can pass through the weighing platform after dynamic adjustment in a balanced manner.
Optionally, in this embodiment, the corresponding relationship between the load cell and the moment of support force of the weighing platform, the moment of gravity of the vehicle, the moment of friction force of the vehicle on the weighing platform, and the moment of gravity of the weighing platform is expressed by the following formula:
equation 1:
equation 2:
equation 3:
wherein F is the gravity of the automobile, F1、F2It is right respectively for weighing sensor the holding power of weighing platform, G is the gravity of weighing platform, and f is the car is in the frictional force of weighing platform, x is the distance that the car gos forward on the weighing platform, b, c are respectively for being located first sensor, the distance of second sensor apart from the weighing platform edge at relative both ends under the weighing platform, an are weighing platform length, and d is that frictional force action point arrives firstThe distance between the sensor and the second sensor.
Optionally, in this embodiment, the performing static mechanical analysis on the truck scale includes:
creating a static mechanical model of the automobile which is statically parked on the automobile scale, wherein the static mechanical model comprises a weighing platform, a weighing sensor and the automobile of the automobile scale;
and carrying out static mechanical analysis on the weighing sensor of the truck scale.
Optionally, in this embodiment, determining, according to the correspondence, a distance from the load cell to an edge of the weighing platform when the automobile is balanced and stops at each position of the weighing platform, and determining the distance as the first position of the load cell includes:
and determining the first positions of the first sensor and the second sensor when the automobile is balanced and is statically parked on the weighing platform according to the formula 1, the formula 2, the formula 3 and equipment parameters of the weighing platform, wherein the equipment parameters of the weighing platform comprise the weight of the weighing platform, the friction coefficient between the surface of the weighing platform and the automobile tire.
Optionally, in this embodiment, dynamically adjusting the first position of the weighing sensor, and detecting whether the vehicle can balance the weighing platform passing through the dynamically adjusted first position, if it is detected that the vehicle can balance the weighing platform passing through, the dynamically adjusted first position is used as the position of the weighing sensor, including:
dynamically adjusting the first positions of the first sensor and the second sensor in a preset position range, and judging whether the weighing platform can keep balance when the automobile passes through the weighing platform after the positions of the first sensor and the second sensor are dynamically adjusted;
and if the weighing platform cannot keep balance, simultaneously adjusting the positions of the first sensor and the second sensor again until the weighing platform is balanced.
In a second aspect, an embodiment of the present application further provides a position determination apparatus for a load cell, the apparatus including:
the static analysis module is used for carrying out static mechanical analysis on the truck scale to obtain the corresponding relation among the supporting force moment of the weighing sensor on the weighing platform, the gravity moment of the vehicle, the friction force moment of the vehicle on the weighing platform and the gravity moment of the weighing platform;
the first position calculation module is used for determining the distance between the weighing sensor and the edge of the weighing platform when the automobile is balanced and stops at each position of the weighing platform according to the corresponding relation, and determining the distance as the first position of the weighing sensor;
and the second position calculation module is used for dynamically adjusting the first position of the weighing sensor and detecting whether the automobile can balance the weighing platform passing through the dynamic adjustment, and if the automobile can balance the weighing platform passing through the dynamic adjustment, the position after the dynamic adjustment is used as the position of the weighing sensor.
Optionally, in this embodiment, the corresponding relationship between the support moment of the weighing platform, the gravity moment of the vehicle, the friction moment of the vehicle on the weighing platform, and the gravity moment of the weighing platform by the weighing sensor is expressed by the following formula:
equation 1:
equation 2:
equation 3:
wherein F is the gravity of the automobile, F1、F2Respectively weighing sensor is right the holding power of weighing platform, G is the gravity of weighing platform, f is the car is in the frictional force of weighing platform, x is the distance b that the car gos forward on the weighing platform, c is for being located respectively the distance of the first sensor, the second sensor of relative both ends under the weighing platform from the edge of weighing platform, a is weighing platform length, d is frictional forceDistances of the point of action to the first and second sensors.
Optionally, in this embodiment, the static analysis module is specifically configured to:
creating a static mechanical model of the automobile which is statically parked on the automobile scale, wherein the static mechanical model comprises a weighing platform, a weighing sensor and the automobile of the automobile scale;
and carrying out static mechanical analysis on the weighing sensor of the truck scale.
Optionally, in this embodiment, the first position calculating module is specifically configured to:
and determining the first positions of the first sensor and the second sensor when the automobile is balanced and is statically parked on the weighing platform according to the formula 1, the formula 2, the formula 3 and equipment parameters of the weighing platform, wherein the equipment parameters of the weighing platform comprise the weight of the weighing platform, the friction coefficient between the surface of the weighing platform and the automobile tire.
Optionally, in this embodiment, the second position calculating module is specifically configured to:
dynamically adjusting the first positions of the first sensor and the second sensor in a preset position range, and judging whether the weighing platform can keep balance when the automobile passes through the weighing platform after the positions of the first sensor and the second sensor are dynamically adjusted;
and if the weighing platform cannot keep balance, simultaneously adjusting the positions of the first sensor and the second sensor again until the weighing platform is balanced.
Compared with the prior art, the embodiment of the application has the following beneficial effects:
the application provides a position determining method and a position determining device of a weighing sensor, which are applied to a truck scale comprising a weighing platform and the weighing sensor supporting the weighing platform, and the method comprises the following steps: carrying out static mechanical analysis on the truck scale to obtain the corresponding relation among all the moments; determining a first position of the weighing sensor according to the corresponding relation between the moments; and dynamically adjusting the first position of the weighing sensor, detecting whether the automobile can pass through the weighing platform after dynamic adjustment in a balanced manner, and if so, taking the position after dynamic adjustment as the position of the weighing sensor. By the method, when the weighing platform is subjected to loads of different forms generated by vehicles, the weighing sensor is stressed in a balanced manner, the structure is stable, damage of the weighing sensor due to unbalanced stress is reduced, and the service life of the weighing sensor is prolonged.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a top view of a truck scale provided in an embodiment of the present application;
FIG. 2 is a flow chart of a method for determining a position of a load cell provided by an embodiment of the present application;
fig. 3 is a flowchart illustrating sub-steps of step S210 in fig. 2 according to an embodiment of the present disclosure;
FIG. 4 is a mechanical analysis model of a truck scale provided in an embodiment of the present application;
fig. 5 is a schematic structural diagram of a first weighing platform and a second weighing platform according to an embodiment of the present disclosure;
fig. 6 is a functional block diagram of a position determining apparatus of a load cell according to an embodiment of the present application.
Icon: 101-a weighing platform; 102-a load cell; 1021-a first sensor; 1022 — a second sensor; 501-a first weighing platform; 502-a second scale platform; 601-static analysis module; 602-a first position calculation module; 603-second position calculation module.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
Referring to fig. 1, fig. 1 is a top view of a truck scale provided in an embodiment of the present application, where the dynamic truck scale includes a weighing platform 101 and weighing sensors 102 located below the weighing platform, where the weighing platform 101 may be rectangular, the weighing sensors 102 are disposed at four corners of the weighing platform 101, and when a truck is weighed, after the truck is driven in from one end of the truck scale and moves through the truck scale, the truck is driven out from the other end of the truck scale, for example, the truck is driven in the truck scale according to an arrow direction in fig. 1, and data detected by the weighing sensors 102 can be calculated, so as to obtain the weight of the truck.
Referring to fig. 2, fig. 2 is a flowchart of a method for determining a position of a load cell according to an embodiment of the present application, where the method is applied to the truck scale in fig. 1 for determining a position of the load cell 102, so that the truck scale can be balanced in terms of force, and when subjected to loads of different types of vehicles, the truck scale does not overturn. The method comprises the following steps:
step S210, performing static mechanical analysis on the truck scale to obtain a corresponding relationship between the supporting force moment of the weighing sensor 102 on the weighing platform 101, the gravity moment of the vehicle, the friction force moment of the vehicle on the weighing platform 101, and the gravity moment of the weighing platform 101.
Specifically, referring to fig. 3, fig. 3 is a flowchart illustrating a sub-step of step S210 according to an embodiment of the present disclosure. In this step, the performing static mechanical analysis on the truck scale includes:
step S310, a static mechanical model of the automobile which is stopped at the automobile scale is created. The static mechanical model comprises a weighing platform of the truck scale, a weighing sensor and a truck.
In this step, referring to fig. 4 in combination, a force-receiving model of the car balance is created, wherein the force-receiving model includes a simplified platform 101 and simplified sensors 102, the simplified sensors 102 are disposed at two ends of the platform 101, a distance from a first sensor 1021 to one end of the platform 101 is b, a distance from a second sensor 1022 to the other end of the platform 101 is c, and a direction of an arrow indicates that the car is driven from the second sensor 1022 to the first sensor 1021 on the platform 101.
And step S320, carrying out static mechanical analysis on the weighing sensor 102 of the truck scale.
In this step, the simplified force model is subjected to static mechanical analysis, the force conditions of the first sensor 1021 and the second sensor 1022 are determined, and the corresponding relationship between the moment of the support force of the first sensor 1021 and the second sensor 1022 on the weighing platform, the moment of gravity of the vehicle, the moment of the friction force of the vehicle on the weighing platform 101, and the moment of gravity of the weighing platform 101 is obtained.
In order to balance the forces of the first sensor 1021 and the second sensor 1022, the sum of the moments of force received by the first sensor 1021 and the second sensor 1022 is equal to 0, and the corresponding relationship between the moment of support force of the load cell 102 on the scale platform 101, the moment of gravity of the vehicle, the moment of friction force of the vehicle on the scale platform 101, and the moment of gravity of the scale platform 101 is expressed by the following formula:
equation 1:
equation 2:
equation 3:
equation 3 indicates that the total force applied to the weighing platform 101 is 0.
Wherein F is the gravity of the automobile, F1、F2The supporting force of the second sensor 1022 and the first sensor 1021 on the scale 101, G is the gravity of the scale 101, f is the friction force of the car on the scale 101, x is the distance of the car moving on the scale 101, b and c are the distances from the first sensor 1021 and the second sensor 1022 located at the two opposite ends of the scale to the edge of the scale, a is the length of the scale 101, and d is the distance from the acting point of the friction force to the first sensor 1021 and the second sensor 1022.
Step S220, determining the distance from the load cell 102 to the edge of the weighing platform 101 when the vehicle is balanced and stops at each position of the weighing platform 101 according to the corresponding relationship, and determining the distance as the first position of the load cell 102.
In this step, step S220 specifically includes:
the first positions of the first sensor 1021 and the second sensor 1022 when the vehicle is balanced and stationary parked on the weighing platform 101 are determined according to equations 1, 2, 3 and the device parameters of the weighing platform 101, i.e. the values of the parameters in equations 1, 2, 3, wherein the device parameters of the weighing platform 101 include the weighing platform weight, the friction coefficient between the weighing platform surface and the vehicle tire, etc. The values of the parameters in the formula are calculated according to the parameters of the truck scale, so that b = c is obtained, and thus the distance b from the first sensor 1021 to one end of the platform 101 is equal to the distance c from the second sensor 1022 to the other end of the platform 101. Under the condition that b = c, the load cell 102 is balanced in force, and the whole truck scale is stable in structure.
Step S230, dynamically adjusting the first position of the weighing sensor 102, and detecting whether the vehicle can pass through the dynamically adjusted weighing platform in a balanced manner, and if it is detected that the vehicle can pass through the dynamically adjusted weighing platform in a balanced manner, using the dynamically adjusted position as the position of the weighing sensor 102.
In this step, it specifically includes: the first positions of the first sensor 1021 and the second sensor 1022 are dynamically adjusted within a preset position range, and it is determined whether the weighing platform 101 can be balanced when the automobile passes through the weighing platform 101 after the positions of the first sensor 1021 and the second sensor 1022 are dynamically adjusted.
If the platform 101 cannot be balanced, the positions of the first sensor 1021 and the second sensor 1022 are simultaneously adjusted again until the platform 101 is balanced.
In this embodiment, after the static mechanical analysis of the truck scale, the first positions of the first sensor 1021 and the second sensor 1022 are obtained, after the static simplified analysis, when the vehicle moves through the truck scale, the position of the weighing sensor 102 is inaccurate due to the error, so that the truck scale needs to be dynamically simulated, when the vehicle passes through the truck scale, whether the weighing platform 101 is balanced is determined, if the weighing platform 101 is unbalanced, the positions of the first sensor 1021 and the second sensor 1022 are continuously adjusted at the same time, after the adjustment, the dynamic simulation is performed again, whether the weighing platform 101 is balanced when the vehicle passes through is determined, and if the weighing platform 101 is unbalanced, the above steps are repeated until the weighing platform 101 is balanced.
Next, the above steps are exemplified, in this embodiment, the dynamic car scale includes a first weighing platform and a second weighing platform, the length of the first weighing platform 501 is 1m, the length of the second weighing platform 502 is 3m, referring to fig. 5, the maximum load that can be borne by the first weighing platform 501 is 30 tons, the maximum load that can be borne by the second weighing platform 502 is 60 tons, the friction coefficient between the tire and the top of the first weighing platform 501 and the second weighing platform 502 is 0.9, the self weight of the first weighing platform 501 is 1.02 tons, and the self weight of the second weighing platform 502 is 2.72 tons, and when calculating, it is assumed that the car is stationary at half of the length of the weighing platform, that is, x =0.5 a.
By substituting the above values into equations 1, 2, and 3, b = c =0 and d =0 can be obtained, so that the distance between the two load cells of the first platform 501 and the two ends of the first platform 501 is 0, the distance between the two sensors of the second platform 502 and the two ends of the second platform 502 is 0, and the distances between the respective sensors and the top of the platform are all 0.
After the first position of each sensor is determined after static mechanical analysis, dynamic simulation is carried out on the truck scale within a preset position range, dynamic adjustment is carried out on the first position, so that when a truck passes through, the weighing platform can keep balance, and the position of the sensor is the final position at the moment.
Referring to fig. 6, fig. 6 is a functional block diagram of a position determining apparatus of a load cell according to an embodiment of the present application, the apparatus including:
the static analysis module 601 is configured to perform static mechanical analysis on the truck scale to obtain a corresponding relationship between a supporting force moment of the weighing sensor on the weighing platform, a gravity moment of the vehicle, a friction force moment of the vehicle on the weighing platform, and a gravity moment of the weighing platform.
A first position calculating module 602, configured to determine, according to the correspondence, a distance between the weighing sensor and an edge of the weighing platform when the automobile is balanced and stops at each position of the weighing platform, and determine the distance as a first position of the weighing sensor.
And a second position calculating module 603, configured to dynamically adjust the first position of the weighing sensor, and detect whether the vehicle can balance the weighing platform passing through the dynamic adjustment, and if it is detected that the vehicle can balance the weighing platform passing through the dynamic adjustment, use the position after the dynamic adjustment as the position of the weighing sensor.
In this embodiment, the static analysis module 601 is specifically configured to: creating a static mechanical model of the automobile which is statically parked on the automobile scale, wherein the static mechanical model comprises a scale table top of the automobile scale, a sensor and the automobile; and carrying out static mechanical analysis on the sensor of the truck scale.
In this embodiment, the first position calculating module 602 is specifically configured to: and determining the first positions of the first sensor and the second sensor when the automobile is balanced and is statically parked on the weighing platform according to the formula 1, the formula 2, the formula 3 and equipment parameters of the weighing platform, wherein the equipment parameters of the weighing platform comprise the weight of the weighing platform, the friction coefficient between the surface of the weighing platform and the automobile tire.
In this embodiment, the second position calculating module 603 is specifically configured to: dynamically adjusting the first positions of the first sensor and the second sensor in a preset position range, and judging whether the weighing platform can keep balance when the automobile passes through the weighing platform after the positions of the first sensor and the second sensor are dynamically adjusted; and if the weighing platform cannot keep balance, simultaneously adjusting the positions of the first sensor and the second sensor again until the weighing platform is balanced.
In summary, the present application provides a method and an apparatus for determining a position of a weighing sensor, which are applied to a truck scale including a weighing platform and a weighing sensor supporting the weighing platform, and the method includes: carrying out static mechanical analysis on the truck scale to obtain the corresponding relation among all the moments; determining a first position of the weighing sensor according to the corresponding relation between the moments; and dynamically adjusting the first position of the weighing sensor, detecting whether the automobile can pass through the weighing platform after dynamic adjustment in a balanced manner, and if so, taking the position after dynamic adjustment as the position of the weighing sensor. By the method, when the weighing platform is subjected to loads of different forms generated by vehicles, the weighing sensor is stressed in a balanced manner, the structure is stable, damage of the weighing sensor due to unbalanced stress is reduced, and the service life of the weighing sensor is prolonged.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (8)
1. A method for determining the position of a weighing sensor is applied to a truck scale, the truck scale comprises a weighing platform and the weighing sensor supporting the weighing platform, and the method comprises the following steps:
carrying out static mechanical analysis on the truck scale to obtain the corresponding relation among the supporting force moment of the weighing sensor on the weighing platform, the gravity moment of the vehicle, the friction force moment of the vehicle on the weighing platform and the gravity moment of the weighing platform;
determining the distance between the weighing sensor and the edge of the weighing platform when the automobile is balanced and stops at each position of the weighing platform statically according to the corresponding relation, and determining the distance as the first position of the weighing sensor;
dynamically adjusting the first position of the weighing sensor, detecting whether the automobile can pass through the weighing platform after dynamic adjustment in a balanced manner, and if the automobile can pass through the weighing platform after dynamic adjustment in a balanced manner, taking the position after dynamic adjustment as the position of the weighing sensor;
the corresponding relation among the supporting force moment of the weighing platform, the gravity moment of the vehicle, the friction force moment of the vehicle on the weighing platform and the gravity moment of the weighing platform is expressed by the following formula:
equation 1:
equation 2:
equation 3:
wherein F is the gravity of the automobile, F1、F2It is right respectively for weighing sensor the holding power of weighing platform, G is the gravity of weighing platform, and f is the car is in the frictional force of weighing platform, x is the distance that the car gos forward on the weighing platform, b, c are respectively for being located first sensor, the distance of second sensor apart from the weighing platform edge at relative both ends under the weighing platform, an is weighing platform length, and d is that frictional force action point arrivesThe distance of the first sensor and the second sensor.
2. The method of claim 1, wherein the performing a static mechanical analysis of the truck scale comprises:
creating a static mechanical model of the automobile which is statically parked on the automobile scale, wherein the static mechanical model comprises a weighing platform, a weighing sensor and the automobile of the automobile scale;
and carrying out static mechanical analysis on the weighing sensor of the truck scale.
3. The method of claim 1, wherein determining the distance from the load cell to the edge of the platform when the vehicle is at rest and parked at the positions on the platform based on the correspondence, the determining the distance as the first position of the load cell comprises:
and determining the first positions of the first sensor and the second sensor when the automobile is balanced and is statically parked on the weighing platform according to the formula 1, the formula 2, the formula 3 and equipment parameters of the weighing platform, wherein the equipment parameters of the weighing platform comprise the weight of the weighing platform, the friction coefficient between the surface of the weighing platform and the automobile tire.
4. The method of claim 3, wherein dynamically adjusting the first position of the load cell and detecting whether the vehicle is balancing the platform after the dynamically adjusted first position, and if it is detected that the vehicle is balancing the platform, then using the dynamically adjusted first position as the position of the load cell comprises:
dynamically adjusting the first positions of the first sensor and the second sensor in a preset position range, and judging whether the weighing platform can keep balance when the automobile passes through the weighing platform after the positions of the first sensor and the second sensor are dynamically adjusted;
and if the weighing platform cannot keep balance, simultaneously adjusting the positions of the first sensor and the second sensor again until the weighing platform is balanced.
5. A position determining apparatus for a load cell, the apparatus comprising:
the static analysis module is used for carrying out static mechanical analysis on the truck scale to obtain the corresponding relation among the supporting force moment of the weighing sensor on the weighing platform, the gravity moment of the vehicle, the friction force moment of the vehicle on the weighing platform and the gravity moment of the weighing platform;
the first position calculation module is used for determining the distance between the weighing sensor and the edge of the weighing platform when the automobile is balanced and stops at each position of the weighing platform according to the corresponding relation, and determining the distance as the first position of the weighing sensor;
the second position calculation module is used for dynamically adjusting the first position of the weighing sensor, detecting whether the automobile can pass through the weighing platform after dynamic adjustment in a balanced manner or not, and taking the position after dynamic adjustment as the position of the weighing sensor if the automobile can pass through the weighing platform after dynamic adjustment in a balanced manner;
the corresponding relation among the supporting force moment of the weighing platform, the gravity moment of the vehicle, the friction force moment of the vehicle on the weighing platform and the gravity moment of the weighing platform is expressed by the following formula:
equation 1:
equation 2:
equation 3:
wherein F is the gravity of the automobile, F1、F2Respectively the supporting force of the weighing sensor to the weighing platform,g is the gravity of weighing platform, and f is that the car is in the frictional force of weighing platform, x is the distance that the car gos forward on the weighing platform, and b, c are for being located respectively first sensor, the second sensor at relative both ends are apart from the distance of weighing platform edge under the weighing platform, and a is weighing platform length, and d is that the frictional force action point arrives the distance of first sensor and second sensor.
6. The apparatus of claim 5, wherein the static analysis module is specifically configured to:
creating a static mechanical model of the automobile which is statically parked on the automobile scale, wherein the static mechanical model comprises a weighing platform, a weighing sensor and the automobile of the automobile scale;
and carrying out static mechanical analysis on the weighing sensor of the truck scale.
7. The apparatus of claim 5, wherein the first location calculation module is specifically configured to:
and determining the first positions of the first sensor and the second sensor when the automobile is balanced and is statically parked on the weighing platform according to the formula 1, the formula 2, the formula 3 and equipment parameters of the weighing platform, wherein the equipment parameters of the weighing platform comprise the weight of the weighing platform, the friction coefficient between the surface of the weighing platform and the automobile tire.
8. The apparatus of claim 7, wherein the second location calculation module is specifically configured to:
dynamically adjusting the first positions of the first sensor and the second sensor in a preset position range, and judging whether the weighing platform can keep balance when the automobile passes through the weighing platform after the positions of the first sensor and the second sensor are dynamically adjusted;
and if the weighing platform cannot keep balance, simultaneously adjusting the positions of the first sensor and the second sensor again until the weighing platform is balanced.
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| KR101729260B1 (en) * | 2016-11-14 | 2017-05-02 | 이태영 | Apparatus for load measurement and over loading/unbalance alarm for cargo vehicle |
| CN208420152U (en) * | 2018-07-23 | 2019-01-22 | 南宁中平电子衡器股份有限公司 | The protective device that the sinking of truck scale basis causes weighing platform to be toppled over |
| CN208420140U (en) * | 2018-07-23 | 2019-01-22 | 南宁中平电子衡器股份有限公司 | Truck scale sensor steel ball falls the protective device for causing weighing platform to roll |
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| CN206756286U (en) * | 2017-05-31 | 2017-12-15 | 山东博安智能科技股份有限公司 | Dynamic balance weighing unit and truck scale |
| CN207798231U (en) * | 2018-02-28 | 2018-08-31 | 苏州太平洋汽车保修设备有限公司 | A kind of wheel weight brake detection table |
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