CN216695231U

CN216695231U - Vehicle weighing device

Info

Publication number: CN216695231U
Application number: CN202123200420.9U
Authority: CN
Inventors: 敖武; 苏传明; 帅树新; 项文杰
Original assignee: Zhejiang Dahua Technology Co Ltd
Current assignee: Zhejiang Dahua Technology Co Ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-06-07
Anticipated expiration: 2031-12-17

Abstract

The application discloses vehicle weighing device includes: a weighing platform; a plurality of sensors distributed on the weighing platform at intervals, wherein the sensors are used for sensing the position of the tire of the vehicle to be weighed; in a first direction, the distance between two adjacent sensors is less than or equal to the length of the tire; the ground induction coil is arranged on one side or two sides of the weighing platform along the direction of the weighing platform; the first direction intersects the orientation of the weighing platform. The application provides a vehicle weighing device can acquire the speed of waiting to weigh the vehicle and wait to weigh the tire contact weighing platform's of vehicle concrete position to can compensate the deviation between weighing data and the actual vehicle weight.

Description

Vehicle weighing device

Technical Field

The application relates to the technical field of vehicle weighing, in particular to a vehicle weighing device.

Background

The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.

In order to protect the safety of road bridges and the like and reduce traffic accidents, the load of a running vehicle needs to be weighed and detected, so that the demand on the truck scale is more and more vigorous. Truck scales, also known as loaders, are large scales that are placed on the ground and can be used to weigh a vehicle and its load.

Dynamic weighing is the measurement of the weight of a vehicle and its load in an out-of-park motion. Compared with static weighing under a parking state, the dynamic weighing can save time and is high in efficiency, and normal traffic cannot be interfered during weighing. Therefore, the dynamic weighing of the vehicle has great significance for road construction and management, and also has great promotion effect on vehicle transportation modernized management.

In the present dynamic weighing process, weighing data receives vehicle speed, the influence such as the truck scale position is rolled to the tire for there is a certain deviation in quantity in weighing data and the weight of actual vehicle that survey, and the size of this deviation will cause certain degree erroneous judgement to whether overload in the vehicle driving process.

It should be noted that the above background description is only for the convenience of clear and complete description of the technical solutions in the present specification and for the understanding of those skilled in the art. Such solutions are not considered to be known to the person skilled in the art merely because they have been set forth in the background section of the present specification.

SUMMERY OF THE UTILITY MODEL

The technical problem that this application mainly solved provides a vehicle weighing device, can acquire the speed of waiting to weigh the vehicle and the concrete position of waiting to weigh the tire contact weighing platform of vehicle to can compensate the deviation between weighing data and the actual vehicle weight.

In order to solve the technical problem, the application adopts a technical scheme that: there is provided a vehicle weighing apparatus comprising:

a weighing platform;

the weighing platform comprises a plurality of sensors, a weighing platform and a weighing controller, wherein the sensors are distributed on the weighing platform at intervals and used for sensing the positions of tires of a vehicle to be weighed; in a first direction, the distance between two adjacent sensors is less than or equal to the length of the tire;

the ground induction coil is arranged on one side or two sides of the weighing platform along the direction of the weighing platform; the first direction intersects with an orientation of the weighing platform.

Further, in the first direction, the distance between every two adjacent sensors is equal.

Further, the weighing platform comprises a plurality of sub-areas arranged along the first direction, and each sub-area is provided with one sensor.

Further, each of the sub-regions has opposite first and second ends along an orientation of the weighing platform, a plurality of the first ends being located on a same side of the weighing platform, and a plurality of the second ends being located on a same side of the weighing platform; a plurality of adjacent sensors are located at the first end and the second end, respectively.

Further, each of the sub-regions has opposite first and second ends along an orientation of the weighing platform, a plurality of the first ends being located on a same side of the weighing platform, and a plurality of the second ends being located on a same side of the weighing platform; a plurality of the sensors are all located at the first end or all located at the second end.

Further, the sensor comprises a diffuse reflection sensor, and the effective detection distance of the diffuse reflection sensor is smaller than the shortest distance from the vehicle body to the weighing platform.

Further, an effective detection distance of the diffuse reflection sensor is set to be less than or equal to 5 mm.

Further, the first direction and the orientation of the weighing platform are perpendicular to each other, the first direction is perpendicular to the driving direction of the vehicle to be weighed, and the orientation of the weighing platform is parallel to the driving direction of the vehicle to be weighed.

Furthermore, there are two ground induction coils, locate respectively along the orientation of weighing platform the both sides of weighing platform.

Further, in the orientation of the weighing platform, the length of the weighing platform is less than the distance between two adjacent tires; in the first direction, the length of the weighing platform is greater than the distance between two tires of the vehicle to be weighed.

Different from the prior art, the beneficial effects of the application are that: the vehicle weighing device that this application embodiment provided through setting up ground induction coil and a plurality of sensor, not only can acquire the speed of waiting to weigh the vehicle, can also wait to weigh the specific position of the tire contact weighing platform of vehicle through the sensor response to can compensate the deviation of weighing data according to the speed of waiting to weigh the vehicle, the specific position of tire contact weighing platform, optimize the precision of weighing.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:

FIG. 1 is a schematic diagram of a truck scale test point;

fig. 2 is a schematic structural view of a vehicle weighing apparatus provided in the present embodiment;

fig. 3 is a schematic structural diagram of a weighing platform provided in the present embodiment;

fig. 4 is a schematic structural view of another weighing platform provided in the present embodiment;

fig. 5 is a schematic structural view of the weighing platform provided in the embodiment when the weighing platform is in contact with a tire of a vehicle to be weighed.

Description of reference numerals:

100. a truck scale; 101. mounting holes; 200. a vehicle to be weighed; 201. a tire;

1. a ground induction coil; 2. a weighing platform; 21. a friction portion; 22. a connecting portion; 23. a cover plate; 3. a sensor; 41. a first end; 42. a second end;

x: a first direction; y: the orientation of the weighing platform;

A. b, C, D, E, F: a load position;

G. h, I, J, K, L, M, N: a sub-region;

31. 32, 33, 34, 35, 36, 37, 38: a sensor.

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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Before dynamic weighing, the truck scale 100 needs to be statically debugged, for example, the truck scale 100 needs to be adjusted in angular difference, so that the load is loaded to each corner of the truck scale, the readings are consistent, and the data consistency of the whole weighing apparatus is ensured, so that the weighing data of the truck scale 100 are consistent even if the load is in different positions during use. However, because the truck scale 100 mainly adopts a steel structure and the weighing apparatus product adopts various strength reinforcing modes, in the actual load loading process, the disturbance situation of the weighing platform of the truck scale 100 inevitably occurs, and especially, because the span in the length direction is large, the influence of the disturbance situation is more prominent. Therefore, under the same load, the load position is located at the center of the truck scale 100 and the load position is located at the edge of the truck scale 100, so that different data feedback exists and the data feedback regularly changes from the center to the edge. In this specification, the load position refers to the position where the tire contacts the weighing platform of the truck scale 100, that is, the position where the tire rolls on the weighing platform of the truck scale 100.

Specifically, as shown in fig. 1, the lateral end of the truck scale 100 is provided with a plurality of mounting holes 101, which facilitates the installation of other tools in the later period. When the angular difference between the points of the load position A, B, C, D is adjusted in place, the truck scale 100 still has a certain error although meeting the national standard, and the load position in the length direction has a large influence on the error. There is some error in the load position E, F, D and the error value appears to vary regularly from center to side. Therefore, to optimize the weighing accuracy, compensation in the longitudinal direction according to the load position is important.

Therefore, the embodiment of the application provides a vehicle weighing device, which can compensate the deviation of weighing data according to the specific position of the tire 201 contacting the weighing platform 2, and further optimize the weighing precision. Referring to fig. 2, the vehicle weighing apparatus includes a weighing platform 2, a ground coil 1, and a plurality of sensors 3.

Wherein a plurality of sensors 3 are distributed at intervals on the weighing platform 2. The sensor 3 is used to sense the position of the tyre 201 of the vehicle 200 to be weighed. In the first direction X, the distance between two adjacent sensors 3 is less than or equal to the length of the tire 201. The ground induction coil 1 is arranged on one side or two sides of the weighing platform 2 along the orientation Y of the weighing platform. The first direction X intersects the orientation Y of the weighing platform.

The vehicle weighing device that this application embodiment provided through setting up ground induction coil 1 and a plurality of sensor 3, not only can acquire the speed of waiting to weigh vehicle 200, can also wait to weigh the concrete position of vehicle 200's tire 201 contact weighing platform 2 through the response of sensor 3 to can compensate weighing data's deviation according to waiting to weigh vehicle 200's speed, the concrete position that tire 201 contacted weighing platform 2, optimize the precision of weighing.

In this embodiment, the first direction X and the orientation Y of the weighing platform may be perpendicular to each other. Preferably, the first direction X is the length direction of the weighing platform 2 and the orientation Y of the weighing platform is the width direction of the weighing platform 2. The direction of travel of the vehicle 200 to be weighed is parallel to the orientation Y of the weighing platform, perpendicular to the first direction X. The first direction X is the width direction of the road surface, and the orientation Y of the weighing platform is the length direction of the road surface.

As shown in fig. 5, the length of the weighing platform 2 in the orientation Y of the weighing platform is smaller than the distance d2 between two adjacent tires 201, so that at most only one tire 201 rolls the weighing platform 2 in the orientation Y of the weighing platform. In the first direction X, the length of the weighing platform 2 is greater than the distance between two tires 201 of the vehicle 200 to be weighed, so as to ensure that the weighing platform 2 can be rolled when the vehicle runs through the weighing platform 2. Preferably, in the first direction X, a plurality of weighing platforms 2 are spliced in sequence to form a long weighing plane, so as to ensure that the vehicle can be rolled onto the weighing platforms 2.

In the present embodiment, the arrangement of the sensors 3 is not specifically limited, and they may be uniformly distributed, or may be non-uniformly distributed according to the conditions such as the internal space of the weighing platform 2. In one embodiment, the distance between every two adjacent sensors 3 is equal in the first direction X.

In particular, the weighing platform 2 may comprise a plurality of sub-areas arranged along the first direction X, each sub-area having one sensor 3 disposed therein. Preferably, each sub-region has the same width in the first direction X, that is, the distance between every two adjacent sensors 3 in the first direction X is the same. As shown in fig. 3 and 4, the plurality of

sensors

31, 32, 33, 34, 35, 36, 37, 38 virtually divide the weighing platform 2 into a plurality of sub-regions G, H, I, J, K, L, M, N, respectively, in the first direction X.

Wherein each sub-area has opposite first and second ends 41, 42 along the weighing platform's orientation Y, the first ends 41 being located on the same side of the weighing platform 2 and the second ends 42 being located on the same side of the weighing platform 2. The sensors 3 in each sub-area may be arranged at arbitrary positions.

In one embodiment, as shown in fig. 3, adjacent sensors 3 are located at the first end 41 and the second end 42, respectively, and are staggered. In another embodiment, as shown in fig. 4, a plurality of sensors 3 are each located at the first end 41 or each located at the second end 42.

In the present embodiment, the surface of the weighing platform 2 facing the vehicle may further include a friction portion 21, and the friction portion 21 may be a plurality of inclined bars arranged in a staggered manner for enhancing friction. The weighing platform 2 may be rectangular, and may be provided with connecting portions 22 at four corners thereof, and a cover plate 23 may be provided on the connecting portions 22.

In the present embodiment, the sensor 3 may include a diffuse reflection sensor. When the vehicle tire 201 presses the weighing platform 2 and the tire 201 presses the upper part of a certain diffuse reflection sensor, the corresponding diffuse reflection sensor can recognize and feed back signals, and the sensor 3 at the position where the tire 201 does not pass does not act, so that the position pressed by the tire 201 can be determined according to the signals of the diffuse reflection sensor, and further, the sub-area where the load position is located can be determined more accurately.

As shown in fig. 5, the effective detection distance of the diffuse reflection sensor is smaller than the shortest distance d1 from the vehicle body to the weighing platform 2, so that the tire 201 can be effectively sensed without sensing the vehicle body, and the load position can be accurately determined. Where the body refers to the portion of the vehicle other than tire 201. Specifically, the effective detection distance of the diffuse reflection sensor may be set to be less than or equal to 5 mm.

Of course, the sensor 3 in the present embodiment includes, but is not limited to, a diffuse reflection sensor, and other sensors, such as a mechanical sensor, may be used. Either a direct contact sensor or an indirect contact sensor may be used, as long as the sensor 3 can sense the tire 201.

In the present embodiment, the number of the sensors 3 is not limited (for example, 8 sensors may be provided), and it is only necessary to ensure that the distance between two adjacent sensors 3 in the first direction X is less than or equal to the length of the tire 201, so that the tire 201 can be rolled on any one of the sensors 3, and the sensor 3 can measure which sub-region the tire 201 is specifically located in.

In the present embodiment, two ground coils 1 are provided on both sides of the weighing platform 2 along the direction Y of the weighing platform. Ground induction coil 1 can be used for measuring the speed of a motor vehicle, can also be used for controlling vehicle weighing device's start-up, especially when road surface vehicle is less evening, can keep vehicle weighing device shutdown or standby, when ground induction coil 1 senses the vehicle, controls vehicle weighing device again and starts, weighs the vehicle.

In this embodiment, the vehicle weighing apparatus may further include a processor. The processor can compensate for weighing errors based on feedback signals from the ground sensing coil 1 and the sensor 3. Specifically, the corresponding speed of the vehicle can be calculated by combining the distance between the two ground induction coils 1 on the two sides and the time difference of the response of the vehicle to the two ground induction coils 1 when the vehicle passes through the weighing platform 2.

In addition, the vehicle weighing device can also be provided with a matched information acquisition camera for acquiring axle data. From the feedback signal of the sensor 3, the zone in which the tyre 201 is loaded can be determined. Thus, experimental calibration correction can be performed according to speed steps, the number of vehicle axles and the load position. Specifically, different speed steps are divided, the span of each speed step is the same, and the actual measurement is carried out by combining different axle number vehicle types and different load positions, and then compensation is carried out. The speed step is taken as a first dimension direction, the number of vehicle model shafts is taken as a second dimension direction, the area where the load position is located is taken as a third dimension direction, and a database of compensation parameters is formed by corresponding error results according to the test debugging parameters.

Then, in the actual use process, when a vehicle passes through the weighing platform 2, the vehicle axle data collected by the camera can be collected according to the matched information, the speed is calculated through the triggering time difference of the ground sensing coils 1 embedded in front and at the back, the load position is determined according to the feedback signal of the sensor 3, and then the calibrated compensation parameters are called in the compensation parameter database, so that the measured data are more accurate, and the test precision of the vehicle weighing device is improved to a greater extent.

Compared with the prior art, the weighing platform has the advantages that the sensors 3 are arranged in the length direction of the weighing platform 2, the weighing platform 2 is divided into a plurality of areas in a virtual mode, the influence that the load positions in the length direction are not uniform is fully considered, the compensation in the length direction can be well realized, and the load positions are compensated. The influence of vehicle speed, vehicle axle number has not only been considered in this application, has also considered the influence that 2 length direction disturbance of weighing platform itself brought simultaneously to make the data of weighing more accurate.

It should be noted that, in the description of the present specification, the terms "first", "second", and the like are used for descriptive purposes only and for distinguishing similar objects, and no order is present therebetween, and no indication or suggestion of relative importance is to be made. In addition, in the description of the present specification, the meaning of "a plurality" is two or more unless otherwise specified.

Any numerical value recited herein includes all values from the lower value to the upper value, in increments of one unit, provided that there is a separation of at least two units between any lower value and any higher value. For example, if it is stated that the number of a component or a value of a process variable (e.g., temperature, pressure, time, etc.) is from 1 to 90, preferably from 20 to 80, and more preferably from 30 to 70, it is intended that equivalents such as 15 to 85, 22 to 68, 43 to 51, 30 to 32 are also expressly enumerated in this specification. For values less than 1, one unit is suitably considered to be 0.0001, 0.001, 0.01, 0.1. These are only examples of what is intended to be explicitly recited, and all possible combinations of numerical values between the lowest value and the highest value that are explicitly recited in the specification in a similar manner are to be considered.

Unless otherwise indicated, all ranges include the endpoints and all numbers between the endpoints. The use of the terms "comprising" or "including" to describe combinations of elements, components, or steps herein also contemplates embodiments that consist essentially of such elements, components, or steps. By using the term "may" herein, it is intended to indicate that any of the described attributes that "may" include are optional.

A plurality of elements, components, parts or steps can be provided by a single integrated element, component, part or step. Alternatively, a single integrated element, component, part or step may be divided into separate plural elements, components, parts or steps. The disclosure of "a" or "an" to describe an element, ingredient, component or step is not intended to foreclose other elements, ingredients, components or steps.

The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims

1. A vehicle weighing apparatus, comprising:

a weighing platform;

2. The vehicle weighing apparatus of claim 1, wherein the distance between each adjacent two of the sensors is equal in the first direction.

3. A vehicle weighing apparatus as claimed in claim 1 or claim 2, wherein the weighing platform comprises a plurality of sub-regions aligned in the first direction, one sensor being provided in each sub-region.

4. The vehicle weighing apparatus of claim 3, wherein each of said sub-regions has first and second opposite ends oriented along said weighing platform, a plurality of said first ends being located on a same side of said weighing platform and a plurality of said second ends being located on a same side of said weighing platform; a plurality of adjacent sensors are located at the first end and the second end, respectively.

5. The vehicle weighing apparatus of claim 3, wherein each of said sub-regions has first and second opposite ends oriented along said weighing platform, a plurality of said first ends being located on a same side of said weighing platform and a plurality of said second ends being located on a same side of said weighing platform; a plurality of the sensors are all located at the first end or all located at the second end.

6. The vehicle weighing apparatus of claim 3, wherein the sensor comprises a diffuse reflectance sensor having an effective detection distance that is less than a shortest distance of a vehicle body to the weighing platform.

7. The vehicle weighing apparatus of claim 6, wherein an effective detection distance of the diffuse reflection sensor is set to be less than or equal to 5 mm.

8. The vehicle weighing apparatus of claim 3, wherein the first direction and the weighing platform are oriented perpendicular to each other, the first direction being perpendicular to a direction of travel of the vehicle to be weighed, the weighing platform being oriented parallel to the direction of travel of the vehicle to be weighed.

9. The vehicle weighing apparatus of claim 1, wherein two ground coils are provided on each side of the weighing platform in the direction of the weighing platform.

10. The vehicle weighing apparatus of claim 1, wherein the weighing platform has a length, in the orientation of the weighing platform, that is less than the distance between two adjacent tires; in the first direction, the length of the weighing platform is greater than the distance between two tires of the vehicle to be weighed.