CN220583571U - Vehicle dynamic weighing device and vehicle dynamic weighing system - Google Patents
Vehicle dynamic weighing device and vehicle dynamic weighing system Download PDFInfo
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- CN220583571U CN220583571U CN202322268834.8U CN202322268834U CN220583571U CN 220583571 U CN220583571 U CN 220583571U CN 202322268834 U CN202322268834 U CN 202322268834U CN 220583571 U CN220583571 U CN 220583571U
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- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 238000005461 lubrication Methods 0.000 claims 1
- 238000009412 basement excavation Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 4
- 239000002344 surface layer Substances 0.000 abstract description 4
- 238000004458 analytical method Methods 0.000 description 3
- 238000007405 data analysis Methods 0.000 description 3
- 238000013500 data storage Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 235000014121 butter Nutrition 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model belongs to the technical field of weighing, and discloses a vehicle dynamic weighing device which comprises at least two sensing units, wherein each sensing unit is arranged in a row along the transverse direction of a lane; the sensing unit comprises a bearing box, a distribution beam and two piezoelectric sensors; the bearing box is provided with a containing cavity with an opening at the top, the distribution Liang Qian is arranged in the containing cavity, two ends of the distribution beam are fulcrum ends, two piezoelectric sensors are respectively arranged at the bottoms of the two fulcrum ends of the distribution beam, and the piezoelectric sensors are contacted with the bottom of the bearing box. The vehicle dynamic weighing device can accurately collect the axle weight and the total weight of each axle of the vehicle under the condition that the vehicle is transversely misplaced in the lane range, can also realize the collection of crossing the lane, reduce the error data collected by crossing the lane, simultaneously reduce the span of the distribution beam, reduce the height of the distribution beam, and meet the construction requirements by the conventional bridge deck paving thickness or pavement surface layer, and simultaneously reduce the excavation and the cost.
Description
Technical Field
The utility model belongs to the technical field of weighing, and particularly relates to a vehicle dynamic weighing device and a vehicle dynamic weighing system.
Background
In order to suppress overload transportation, in recent years, toll booths are installed at entrances of highways, bridges and the like, and weight charge is adopted, namely, the toll is charged according to the weight of vehicles passing through, and the infrastructure of the weight charge is a vehicle weighing device. The early-used vehicle weighing device is a static weighing instrument, and the weighing device needs a vehicle to travel onto the weighing device when in use, and the vehicle can accurately display the reading after being stabilized on a weighing platform, so that the weighing speed is very slow, and under the condition of large vehicle flow, a plurality of vehicles are often caused to wait, so that road congestion is caused.
In order to avoid the above-mentioned drawbacks of static weighing devices, dynamic weighing devices for vehicles have been developed. The working principle of the dynamic weighing device is as follows: after the vehicle running dynamically passes through the weighing platform provided with the sensor, the sensor senses the pressure signal of the dynamic vehicle, and then the processor performs a series of analysis and processing, and finally the dynamic weighing value of the vehicle is calculated. However, the conventional vehicle dynamic weighing device can only accurately measure the axle weight and total weight of the vehicle when the vehicle runs in the lane, and when the vehicle runs in the lane in a laterally staggered manner or the vehicle runs across the lane, the axle weight and total weight of the vehicle are difficult to accurately measure.
Disclosure of Invention
The utility model aims to provide a vehicle dynamic weighing device which can accurately measure the axle weight and total weight of a vehicle under the condition that the vehicle runs in a lane in a transverse dislocation way or the vehicle runs across lanes.
The technical scheme for achieving the aim comprises the following steps.
The first aspect of the utility model provides a vehicle dynamic weighing device, which comprises at least two sensing units, wherein each sensing unit is arranged in a row along the transverse direction of a lane; the sensing unit comprises a bearing box, a distribution beam and two piezoelectric sensors;
the bearing box is provided with an accommodating cavity with an opening at the top, the distribution Liang Qian is arranged in the accommodating cavity, two ends of the distribution beam are fulcrum ends, two piezoelectric sensors are respectively arranged at the bottoms of the two fulcrum ends of the distribution beam, and the piezoelectric sensors are in contact with the bottom of the bearing box.
In some embodiments, all the sensing units arranged in a row along the transverse direction of the lane are combined to form one sensing unit assembly, and the sensing unit assemblies are provided with two groups, and the two groups of sensing unit assemblies are arranged in parallel along the vehicle running direction of the lane.
In some embodiments, two of the sensor units are provided, and the two sensor units are arranged in a row along the transverse direction of the lane.
In some of these embodiments, the piezoelectric sensor is a cement-based piezoelectric sensor.
In some of these embodiments, the distribution beam is a reinforced concrete simply supported beam.
In some embodiments, the distribution beam comprises a beam body and bearing columns arranged at bottoms of two opposite ends of the beam body, wherein the two bearing columns are matched to bear the beam body, and the two bearing columns are two fulcrum ends.
In some of these embodiments, the top surface of the distribution beam is flush with the top surface of the carrying case.
In some embodiments, the bearing box comprises a bottom plate and a side plate vertically arranged on the bottom plate, the bottom plate and the side plate enclose the accommodating cavity with an open top, and a lubricant is filled between the side plate and the distribution beam to form a lubricant layer.
The second aspect of the utility model provides a vehicle dynamic weighing system, which comprises an acquisition instrument, an industrial personal computer and the vehicle dynamic weighing device, wherein the acquisition instrument is electrically connected with the piezoelectric sensor, and the industrial personal computer is electrically connected with the acquisition instrument.
In some embodiments, the vehicle dynamic weighing system further comprises a display screen electrically connected to the industrial personal computer.
The technical scheme provided by the utility model has the following advantages and effects:
the vehicle dynamic weighing device is provided with at least two sensing units which are distributed along the transverse direction of a lane, the distribution beam is embedded in the bearing box, the two piezoelectric sensors are arranged at the bottoms of the two pivot ends of the distribution beam to form the sensing units, so that two wheels of the same shaft can respectively act on the adjacent distribution beams when a vehicle passes, the axle weight and the total weight of each axle of the vehicle can be obtained through the pressure values measured by the piezoelectric sensors at the pivot ends of each distribution beam, the structure that the at least two sensing units are distributed along the transverse direction of the lane to form a sectional arrangement can meet the requirement that the axle weight and the total weight of each axle of the vehicle can be accurately collected under the condition that the vehicle is transversely misplaced in the lane range, the collection of the vehicle can be realized, the error data collected across the lane can be reduced, the span of the distribution beam can be reduced, the height of the distribution beam can be reduced, the construction requirements can be met by the conventional bridge deck pavement thickness or the pavement surface layer, and the excavation cost can be reduced.
Drawings
FIG. 1 is a schematic view showing a longitudinal cross-sectional structure of a vehicle dynamic weighing apparatus of an embodiment of the present utility model in a front view direction;
FIG. 2 is a schematic view showing a longitudinal cross-sectional structure of a vehicle dynamic weighing apparatus in a left-hand direction according to an embodiment of the present utility model;
fig. 3 is a schematic structural view of a dynamic weighing system for a vehicle according to an embodiment of the present utility model.
Reference numerals illustrate:
10. a vehicle dynamic weighing device;
1. a sensing unit; 11. a carrying case; 111. a bottom plate; 112. a side plate; 12. a distribution beam; 121. a beam body; 122. a load-bearing column; 13. a piezoelectric sensor;
20. a collection instrument; 30. an industrial personal computer; 40. and a display screen.
Detailed Description
In order that the utility model may be readily understood, a more particular description of specific embodiments thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
As used herein, the terms "first and second …" are used merely to distinguish between names and not to represent a particular number or order unless otherwise specified or defined.
The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items, unless specifically stated or otherwise defined.
The term "fixed" or "connected" as used herein may be directly fixed or connected to an element, or indirectly fixed or connected to an element.
An embodiment of the present utility model provides a vehicle dynamic weighing device 10, as shown in fig. 1 and 2, the vehicle dynamic weighing device 10 includes at least two sensing units 1, each of the sensing units 1 being arranged in a row along a transverse direction of a lane; the sensing unit 1 comprises a carrying case 11, a distribution beam 12 and two piezoelectric sensors 13; the carrying case 11 has a top opening accommodating cavity, the distribution beam 12 is embedded in the accommodating cavity, two ends of the distribution beam 12 are fulcrum ends, two piezoelectric sensors 13 are respectively arranged at bottoms of the two fulcrum ends of the distribution beam 12, and the piezoelectric sensors 13 are in contact with the bottom of the carrying case 11. The sensor unit 1 can be laid in a groove dug in a bridge deck or a road surface.
It will be appreciated that when the vehicle is travelling along a lane past the sensing unit 1, two wheels of the same axle of the vehicle respectively act on adjacent distribution beams 12, the piezoelectric sensors 13 at the respective pivot points of the adjacent distribution beams 12 are pressed to measure the pressure values, and the axle weight of the vehicle is the sum of the pressure values measured by the piezoelectric sensors 13 at the respective pivot points of the distribution beams 12, so that the axle weight information of the vehicle can be obtained from the sum of the pressure values measured by the piezoelectric sensors 13 at the respective pivot points of the distribution beams 12. After all axles of the vehicle pass through the sensing unit 1, multiple groups of pressure value data are collected, the axle weights of all axles of the vehicle are obtained through analysis, and the total weight of the vehicle is obtained after the axle weights of all axles of the vehicle are added.
In particular, in the present embodiment, two sensor units 1 are provided, and the two sensor units 1 are arranged in a row along the lateral direction of the lane. By means of the cooperation of the two sensor units, two wheels of the same axle of the vehicle respectively act on the adjacent distribution beams 12, and the axle weight and the total weight of the vehicle can be accurately measured even if the vehicle runs in a lane in a transverse dislocation or in a lane crossing manner.
In summary, the vehicle dynamic weighing device 10 is provided with at least two sensing units 1 which are distributed along the transverse direction of a lane, and the sensing units 1 are formed by embedding a distribution beam 12 in a bearing box 11 and arranging two piezoelectric sensors 13 at the bottoms of two pivot ends of the distribution beam 12, so that two wheels of the same axle can respectively act on adjacent distribution beams 12 when a vehicle passes, the axle weight and the total weight of each axle of the vehicle can be obtained by the pressure values measured by the piezoelectric sensors 13 at the pivot ends of each distribution beam 12, the arrangement of at least two sensing units 1 along the transverse direction of the lane can meet the requirement that the axle weight and the total weight of each axle of the vehicle can be accurately acquired under the condition that the vehicle is transversely misplaced in the lane range, cross-lane acquisition can be realized, error data acquired across the lane can be reduced, meanwhile, the span of the distribution beam 12 can be reduced, the height of the distribution beam 12 can be reduced, the conventional bridge deck laying thickness or the pavement surface layer can meet the construction requirements, and the excavation and the cost can be reduced.
In some embodiments, all the sensor units 1 arranged in a row along the transverse direction of the lane are combined to form one sensor unit assembly, and the sensor unit assemblies are provided with two groups, and the two groups of the sensor unit assemblies are arranged in parallel along the vehicle direction of the lane. It can be appreciated that by providing two sets of sensing unit assemblies, it can be used to measure speed measurement information, with specific measurement operations being: setting the distance between the two groups of sensing unit components as L, measuring the 1 st group of data signals and recording time t1 when the front axle of the vehicle passes through the first group of sensing unit components; as the front axle of the vehicle passes the second set of sensor unit assemblies, a set 2 data signal is measured and a time t2 is recorded. The time difference that the front axle of the vehicle passes through the front and rear groups of sensing unit assemblies is t2-t1, and the speed of the vehicle is the distance L divided by the time difference t2-t1 because the distance L between the front and rear groups of sensing unit assemblies is known, so that the speed information of the vehicle is obtained. Therefore, the vehicle dynamic weighing device 10 of the present embodiment can accurately measure the speed, the axle weight and the total weight of the vehicle under the condition that the vehicle runs in a lane in a lateral dislocation or the vehicle runs across lanes.
In some embodiments, the piezoelectric sensor 13 is a cement-based piezoelectric sensor. Specifically, the cement-based piezoelectric sensor is a pressure sensor made of cement and piezoelectric ceramic in a composite manner, and can be embedded at the bottom of the fulcrum end of the distribution beam 12 below the road surface, and the dynamic load testing capability of the cement-based piezoelectric sensor is utilized to analyze the vehicle flow, the vehicle speed and the vehicle weight by testing the impulse response of the sensor caused by the wheel load. Has the advantages of good durability and lower cost.
In some embodiments, the distribution beams 12 are reinforced concrete simply supported beams, and as known from the stress characteristics of the simply supported beams, the axle weight of the vehicle is the sum of the fulcrum reaction forces of the fulcrums of the distribution beams 12, that is, the axle weight of the vehicle is the sum of the pressure values measured by cement-based piezoelectric sensors at the ends of the fulcrums of the adjacent distribution beams 12, so as to obtain axle weight information of the vehicle.
In some embodiments, as shown in fig. 1, the distribution beam 12 includes a beam body 121 and bearing columns 122 disposed at bottoms of opposite ends of the beam body 121, where two of the bearing columns 122 cooperatively bear the beam body 121, and two of the bearing columns 122 are two of the fulcrum ends. When the vehicle runs on the sensing unit 1, the two bearing columns 122 are stress supporting points, and the piezoelectric sensor 13 is arranged at the bottom of the bearing columns 122, so that the weight of the vehicle can be well sensed, and the measurement accuracy is improved.
In some embodiments, as shown in fig. 1, the top surface of the distribution beam 12 is flush with the top surface of the carrying case 11. So that the load-bearing box 11 can well enclose the distribution beam 12 and form a flush surface at the transition between the two, facilitating the vehicle to drive through.
In some embodiments, as shown in fig. 1, the carrying case 11 includes a bottom plate 111 and a side plate 112 vertically disposed on the bottom plate 111, the bottom plate 111 and the side plate 112 enclose the accommodating cavity with an open top, and a lubricant is filled between the side plate 112 and the distribution beam 12 to form a lubricant layer. Wherein the lubricant may be butter, friction between the distribution beam 12 and the load-bearing tank 11 can be reduced by filling with the lubricant. Furthermore, the distribution beam 12 can be well surrounded by the cooperation of the bottom plate 111 and the side plates 112. In particular, in the present embodiment, the bottom plate 111 and the side plate 112 may be steel plates, and the bottom plate 111 and the side plate 112 are connected by welding, so that the carrying case 11 provides sufficient rigidity to fix the distribution beam 12 and the piezoelectric sensor 13. Specifically, the four side plates 112 are vertically disposed on the bottom plate 111, and enclose a square bearing box 11, so as to be laid on the roadbed.
The embodiment of the utility model also provides a vehicle dynamic weighing system, as shown in fig. 1 to 3, which comprises a collector 20, an industrial personal computer 30 and the vehicle dynamic weighing device 10, wherein the collector 20 is electrically connected with the piezoelectric sensor 13, and the industrial personal computer 30 is electrically connected with the collector 20. When the vehicle runs along the lane and passes through the sensing unit 1, two wheels of the same axle of the vehicle respectively act on the adjacent distribution beams 12, the piezoelectric sensors 13 at the pivot ends of the adjacent distribution beams 12 are pressed, and the data signals acquired by the acquisition instrument 20 are changed. The collector 20 sends the collected data signal to the industrial personal computer 30, and the industrial personal computer 30 analyzes the data signal to obtain the pressure value measured by the piezoelectric sensor 13. Wherein the axle weight of the vehicle is the sum of the fulcrum reaction forces of the fulcrum ends of the distribution beams 12, that is, the axle weight of the vehicle is the sum of the pressure values measured by the piezoelectric sensors 13 at the respective fulcrums of the adjacent distribution beams 12, thereby obtaining the axle weight information of the vehicle. When all axles of the vehicle pass through the sensing unit 1, the acquisition instrument 20 acquires a plurality of groups of data signals, the axle weights of all axles of the vehicle are obtained through analysis of the industrial personal computer 30, and the total weight of the vehicle is obtained after the axle weights of all axles of the vehicle are added. Therefore, the vehicle dynamic weighing system can accurately collect the axle weight and the total weight of each axle of the vehicle under the condition that the vehicle is transversely misplaced in the lane range, can also realize the cross-lane collection, reduce the error data of the cross lane, simultaneously reduce the span of the distribution beam 12, reduce the height of the distribution beam 12, and meet the construction requirements through the conventional bridge deck paving thickness or pavement surface layer, and can reduce the excavation and the cost.
In some embodiments, the vehicle dynamic weighing system further comprises a display screen 40, and the display screen 40 is electrically connected to the industrial personal computer 30.
By providing the display screen 40, axle weight information, total vehicle weight information and speed of the vehicle can be transmitted to the display screen 40, and various information of the vehicle can be visually displayed through the display screen 40.
In addition, a data access module, an early warning module, a data storage module and a data analysis module are arranged in the industrial personal computer 30.
The data access module is used for accessing the speed-limiting and load-limiting indexes of bridges or roads, wherein the speed-limiting and load-limiting indexes comprise at least one of the following: total vehicle weight limit, vehicle axle weight limit, vehicle speed limit, etc.
The data analysis module is used for analyzing the data of the cement-based piezoelectric sensor to obtain dynamic vehicle information, and the dynamic vehicle information comprises at least one of the following: gross vehicle weight, vehicle axle weight, vehicle speed, vehicle flow.
The early warning module is used for sending out corresponding early warning information; and if the dynamic vehicle information does not meet the speed-limiting load-limiting index, starting the early warning module. The dynamic vehicle information does not meet the speed limit and load limit index comprises at least one of the following: the total vehicle weight of the dynamic vehicle information exceeds the total vehicle weight limit value of the speed-limiting load-limiting index, the vehicle axle weight of the dynamic vehicle information exceeds the vehicle axle weight limit value of the speed-limiting load-limiting index, and the vehicle speed of the dynamic vehicle information exceeds the vehicle speed limit value of the speed-limiting load-limiting index. The early warning information comprises at least one of the following: and sending out an overtravel early warning of the total weight of the vehicle, an overtravel early warning of the axle weight of the vehicle and an overtravel early warning of the speed of the vehicle.
The data storage module is used for storing the cement-based piezoelectric sensor data acquired by the data acquisition module; the data analysis module reads in the cement-based piezoelectric sensor data from the data storage module, analyzes the cement-based piezoelectric sensor data and obtains dynamic vehicle information, wherein the dynamic vehicle information comprises at least one of the following: gross vehicle weight, vehicle axle weight, vehicle speed, vehicle flow.
The above examples are also not an exhaustive list based on the utility model, and there may be a number of other embodiments not listed. Any substitutions and modifications made without departing from the spirit of the utility model are within the scope of the utility model.
Claims (10)
1. The vehicle dynamic weighing device is characterized by comprising at least two sensing units, wherein each sensing unit is arranged in a row along the transverse direction of a lane; the sensing unit comprises a bearing box, a distribution beam and two piezoelectric sensors;
the bearing box is provided with an accommodating cavity with an opening at the top, the distribution Liang Qian is arranged in the accommodating cavity, two ends of the distribution beam are fulcrum ends, two piezoelectric sensors are respectively arranged at the bottoms of the two fulcrum ends of the distribution beam, and the piezoelectric sensors are in contact with the bottom of the bearing box.
2. The vehicle dynamic weighing apparatus of claim 1, wherein all of said sensor units arranged in rows along the transverse direction of the lane are combined to form one sensor unit assembly, said sensor unit assembly being provided with two groups, said two groups of said sensor unit assemblies being arranged in parallel along the direction of the vehicle's travel of the lane.
3. The vehicle dynamic weighing apparatus of claim 1, wherein two of said sensor units are provided, and two of said sensor units are arranged in a row along a lateral direction of a lane.
4. The vehicle dynamic weighing apparatus of claim 1, wherein said piezoelectric sensor is a cement-based piezoelectric sensor.
5. The vehicle dynamic weighing apparatus of any one of claims 1-4, wherein said distribution beam is a reinforced concrete simply supported beam.
6. The dynamic weighing apparatus of claim 5, wherein said distribution beam comprises a beam body and load-bearing columns disposed at bottoms of opposite ends of said beam body, two of said load-bearing columns cooperatively carrying said beam body, and two of said load-bearing columns being two of said fulcrum ends.
7. A vehicle dynamic weighing apparatus as claimed in any one of claims 1 to 4, wherein the top surface of said distribution beam is flush with the top surface of said load carrying bin.
8. The vehicle dynamic weighing apparatus of any one of claims 1-4, wherein said load-bearing box comprises a bottom plate and side plates vertically disposed on said bottom plate, said bottom plate and said side plates enclosing said receiving cavity forming a top opening, said side plates and said distribution beam being filled with lubricant to form a lubrication layer.
9. A vehicle dynamic weighing system, characterized in that the vehicle dynamic weighing system comprises an acquisition instrument, an industrial personal computer and the vehicle dynamic weighing device according to any one of claims 1 to 8, wherein the acquisition instrument is electrically connected with the piezoelectric sensor, and the industrial personal computer is electrically connected with the acquisition instrument.
10. The vehicle dynamic weighing system of claim 9, further comprising a display screen electrically connected to said industrial personal computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322268834.8U CN220583571U (en) | 2023-08-22 | 2023-08-22 | Vehicle dynamic weighing device and vehicle dynamic weighing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322268834.8U CN220583571U (en) | 2023-08-22 | 2023-08-22 | Vehicle dynamic weighing device and vehicle dynamic weighing system |
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| Publication Number | Publication Date |
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| CN220583571U true CN220583571U (en) | 2024-03-12 |
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| CN202322268834.8U Active CN220583571U (en) | 2023-08-22 | 2023-08-22 | Vehicle dynamic weighing device and vehicle dynamic weighing system |
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| CN (1) | CN220583571U (en) |
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- 2023-08-22 CN CN202322268834.8U patent/CN220583571U/en active Active
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