CN214224313U - Weighing device for dynamic weighing of road vehicles - Google Patents
Weighing device for dynamic weighing of road vehicles Download PDFInfo
- Publication number
- CN214224313U CN214224313U CN202023259047.XU CN202023259047U CN214224313U CN 214224313 U CN214224313 U CN 214224313U CN 202023259047 U CN202023259047 U CN 202023259047U CN 214224313 U CN214224313 U CN 214224313U
- Authority
- CN
- China
- Prior art keywords
- weighing
- vehicle
- vibration
- signal
- platform
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Traffic Control Systems (AREA)
Abstract
The utility model relates to a weighing device for highway vehicle dynamic weighing, weighing device can include: a full car weighing platform for placement in a roadway to carry the weight of a vehicle as it passes the full car weighing platform; a plurality of weighing sensors for being arranged below the entire vehicle weighing platform and sensing the weight of the vehicle through the entire vehicle weighing platform so as to acquire a weighing signal related to the weight of the vehicle; a plurality of vibration sensors removably mounted to the full vehicle weighing platform to acquire vibration signals related to vibration of the vehicle as the vehicle passes the full vehicle weighing platform; and a processing unit configured to: receiving a weighing signal and a vibration signal; and performing fusion processing on the weighing signal and the vibration signal so as to determine the weight of the vehicle. The utility model discloses a weighing device can use vibration signal compensation signal of weighing to improve the accuracy of weighing.
Description
Technical Field
The utility model relates to a technical field weighs generally. More specifically, the present invention relates to a weighing apparatus for road vehicle dynamic weighing.
Background
This section is intended to provide a background or context to the embodiments of the invention that are recited in the specification. The description herein may include concepts that could be pursued, but are not necessarily ones that have been previously conceived or pursued. Therefore, unless otherwise indicated herein, what is described in this section is not prior art to the description and claims of the present invention and is not admitted to be prior art by inclusion in this section.
The dynamic automobile weighing technology refers to a technology for weighing a vehicle in the running process of the vehicle. At present, the dynamic weighing of road vehicles is widely applied to vehicle overweight detection, and plays an important role in traffic management. A conventional automobile scale generally includes a carrier mounted in a recess of a road base for carrying all or part of the weight of a vehicle and transferring the weight carried by the vehicle to a sensor; the sensor is arranged below the bearing body and used for converting the stress of the sensor into an electric signal. When a vehicle running dynamically passes through a bearing body of the automobile weighing apparatus, the sensor senses the pressure of the dynamic vehicle and generates a pressure signal, the processor performs a series of analysis and processing, and finally the dynamic weighing value of the vehicle is calculated.
However, in practical applications, since various vibrations inevitably occur while the vehicle is running, errors caused by the vibrations are included in the weighing result. Therefore, it is necessary to develop a weighing apparatus for dynamic weighing of road vehicles to improve the problem of inaccurate weighing result in the conventional automobile weighing apparatus.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a weighing device for highway vehicle dynamic weighing to improve the unsafe problem of weighing result that exists in traditional automobile weighing apparatus.
The utility model provides a weighing device for highway vehicle dynamic weighing, weighing device can include: a full vehicle weighing platform for placement in a roadway to carry the full weight of a vehicle as it passes the full vehicle weighing platform; a plurality of load cells for being disposed below the full vehicle weighing platform and sensing a weight of the vehicle through the full vehicle weighing platform so as to acquire a weighing signal related to the weight of the vehicle; a plurality of vibration sensors removably mounted to the vehicle platform scale to acquire vibration signals related to vibration of the vehicle as the vehicle passes the vehicle platform scale; and a processing unit configured to: receiving the weighing signal and the vibration signal; and performing fusion processing on the weighing signal and the vibration signal so as to determine the weight of the vehicle.
In an exemplary embodiment, the full car platform may be adapted to fit within a recess defined in the roadway.
In an exemplary embodiment, the full vehicle scale platform may include a plurality of single scale platforms arranged in a traveling direction of the vehicle, and upper surfaces of the plurality of single scale platforms are aligned with each other in a vertical direction.
In an exemplary embodiment, both sides of the full vehicle platform with respect to the direction of vehicle travel may extend to both side edges of the roadway.
In an exemplary embodiment, the load cell may include one or more of a bridge load cell, a spoke load cell, a pillar load cell, or an S-type load cell.
In an exemplary embodiment, the vibration sensor may include one or more of an acceleration sensor, a velocity sensor, or a displacement sensor.
In an exemplary embodiment, the single scale platform may have a mounting surface remote from the roadway, and the plurality of vibration sensors may be removably mounted to the mounting surface of the single scale platform.
In an exemplary embodiment, the processing unit may be further configured to: determining a first weight measurement of the vehicle from the weighing signal; determining a second weight measurement of the vehicle from the vibration signal; and determining a static weight of the vehicle based on the first weight measurement and the second weight measurement.
In an exemplary embodiment, the processing unit may be further configured to: generating first weight information according to the weighing signal; determining vibration noise in the weighing signal according to the weighing signal and the vibration signal; performing vibration elimination according to the difference between the weighing signal and the vibration noise so as to generate a second weighing signal; determining second weight information from the second weighing signal; and determining the weight of the vehicle jointly by the first weight information and the second weight information.
As before, the utility model discloses an utilize whole car weighing platform and weighing sensor to acquire the weighing signal that the vehicle passed through to utilize vibration sensor to acquire the vibration signal of vehicle when the vehicle passed through, recycle processing unit symmetrical heavy signal and vibration signal and fuse the weight of handling and confirming the vehicle. Therefore, the utility model discloses a weighing device can use vibration signal to compensate the signal of weighing to improve the accuracy of weighing. Furthermore, the utility model discloses a carry out frequency domain information analysis to vibration signal, can obtain the vibration information of different frequencies to compensate the signal of weighing more accurately. Therefore, the utility model discloses a weighing device not only can reduce the error of weighing, but also can improve and weigh speed adaptability.
Drawings
The above and other objects, features and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. In the accompanying drawings, several embodiments of the present invention are illustrated by way of example and not by way of limitation, and like reference numerals designate like or corresponding parts, in which:
FIG. 1 is an exemplary schematic diagram illustrating a prior art plate-type weighing apparatus;
fig. 2 is an exemplary schematic view showing a bar weighing device in the prior art;
FIG. 3 is an exemplary schematic diagram illustrating a full truck-type weighing apparatus of the prior art;
fig. 4 is a plan view illustrating a weighing apparatus according to an exemplary embodiment of the present invention installed in a road;
fig. 5 is a sectional view illustrating a weighing apparatus according to an exemplary embodiment of the present invention installed in a road;
fig. 6 is a schematic diagram illustrating a bridge load cell according to an exemplary embodiment of the present invention; and
fig. 7 is an exemplary structural block diagram showing a weighing apparatus according to an exemplary embodiment of the present invention.
Detailed Description
Dynamic motor weighing refers to the weighing of a vehicle during its travel, and commonly takes the form of weighing including axle weight, wheel weight, and incomplete weighing by a bar sensor, such as by measuring and analyzing tire dynamic forces to measure the total and/or partial weight of a moving vehicle. Road vehicle dynamic weighing apparatus typically include a weighing apparatus and electronics including software to measure dynamic tire forces, wheel weight, axle weight and/or gross weight of the vehicle. Dynamic truck scale technology is generally applicable in a number of scenarios such as vehicle weighing, high speed overrun management, and the like.
However, the vehicle inevitably vibrates during traveling, and the vibration of the vehicle is an important source of dynamic weighing error and is related to the vehicle speed, thereby causing the above weighing forms to be accurate in weighing usually under the vehicle running speed of 15km/h, and difficult to accurately weigh after more than 15 km/h. For solving the vibration problem of dynamic weighing, two methods, namely hardware and software, can be adopted.
The hardware method is to increase the weighing distance in the existing axle weight type, wheel weight type, incomplete weighing type and the like to improve the adaptability and accuracy of the weighing speed. However, although the purpose can be achieved by a hardware method of increasing the weighing distance to improve the accuracy, the cost is high, more than one time of cost is required for each time of doubling the weighing adaptive speed, and the structure and the work flow of the weighing device are very complicated due to the cooperation of the modules.
In addition, although the purpose can be achieved by a software method for improving the accuracy through software, the fitting of the software needs to collect vibration signals of at least 2/3 cycles, so that the improvement effect on the adaptability of the weighing speed is limited, and when a continuous signal cannot be collected, better software data fitting cannot be performed.
Fig. 1 shows an exemplary schematic view of a plate-type weighing commonly employed in a conventional weighing apparatus. As shown in fig. 1, a square plate 102 is disposed in a groove on a lane 101 and is flush with the lane, and four load cells 103 are disposed at the bottoms of the four corners of the plate. The square plate 102 and the weighing sensor 103 at the bottom form a plate type weighing device. The four weighing sensors may be connected to the electronic device 105 by wireless or wire, and the electronic device 105 is further connected to the data processing device 106. In one application scenario, the square plate 102 may have a length or width of 1m and a thickness of 20cm to 30cm, for example, and is installed in the lane 101 with the length direction parallel to the vehicle traveling direction and the width direction perpendicular to the vehicle traveling direction. When the vehicle 104 travels past the plate-type weighing device in the arrow direction in the figure, a weighing signal for each axis of the traveling vehicle is obtained by the load cell. The load cell is connected to the electronic device 105 by wireless or wire, and the electronic device 105 receives and displays a weighing signal for each axle of the vehicle from the load cell and preprocesses the weighing signal. Further, the preprocessed weighing signal is transmitted to the data processing device 106; the weighing signal is optimized by the data processing device 106 to obtain a standard weight signal of the axle weight of the vehicle.
In practical application scenarios, the vehicle inevitably vibrates during running. Therefore, a vibration signal is superimposed on the weighing signal obtained by the load cell. For example, if the weighing signal is denoted as y (t), then y (t) ═ w (t) + Asin (ω t + θ), where w (t) is a standard weighing signal, that is, a weighing signal in the absence of vibration; the vibration signal may be represented as a sin (ω t + θ), a, ω, and θ representing the amplitude, angular frequency, and phase of the vibration signal, respectively.
The above-described weighing method using the plate-type weighing apparatus can obtain the vehicle axle weight to some extent, but has the following drawbacks. In one aspect, when the speed of the running vehicle is too high, for example, the vehicle speed reaches 20km/h, the vibration signal collected is generally less than a half-cycle waveform, and it is difficult to determine a, ω, and θ of the vibration signal from the half-cycle waveform, so that it is difficult to obtain the standard weighing signal w (t). To obtain a waveform with a longer period, the weighing distance needs to be increased, which requires a very high cost. On the other hand, when the running vehicle passes through the square plate, the plate is deformed, the vehicle vibration is intensified when the deformation quantity is larger, and the vibration is larger when the vehicle speed is higher, so that the weighing signal obtained at the moment is poorer in precision based on the foregoing description. In yet another aspect, the plate-type weighing apparatus is heavy and inconvenient to move, install, and maintain. The presence of a bar-type weighing device solves some of the problems of plate-type weighing devices.
Fig. 2 shows an exemplary schematic of a bar weighing device. As shown in fig. 2, three strip-shaped plates 202 are arranged along a lane 201 direction and perpendicular to a vehicle traveling direction, and a load cell 203 is packaged in each strip-shaped plate, and the strip-shaped plates and the load cell constitute a strip-shaped weighing device. Likewise, the load cells are each connected to an electronic unit 105, and the electronic unit 105 is also connected to a data processing device 106. In one implementation scenario, the bar weighing device is embedded within the roadway to a depth of about 5 cm. Therefore, the bar type weighing device is light in weight and convenient to carry and install compared with the plate type weighing device, and deformation of the bar type plate caused by vehicles is small compared with the plate type weighing device. Similarly, as the vehicle 204 travels past the bar weighing device in the direction of the arrow in the figure, a weighing signal is obtained for each axis of the vehicle, which is also received by the electronic instrument and optimized by the data processing device to obtain a standard weight signal. In one implementation scenario, the bar weighing apparatus can obtain a waveform of one cycle, but unlike the plate weighing apparatus, the weighing signal obtained by the plate weighing apparatus is a continuous waveform, while the weighing signal obtained by the bar weighing apparatus is discontinuous, so that w (t) conforming to the waveform cannot be calculated by fitting by substituting a, ω, and θ into the weighing signal y (t) differently.
Fig. 3 is an exemplary schematic diagram illustrating a full-vehicle weighing apparatus in the prior art. As shown in fig. 3, for a weighing apparatus of a whole vehicle type, the length of the top of the weighing platform is generally in the range of 1800cm to 2100cm (centimeter), and since the weighing platform of the whole vehicle has a longer weighing length, it is not necessary to perform hardware processing on the vibration to reduce the influence, and it is not necessary to perform optimization by a software method. However, when the whole vehicle type dynamic weighing device is applied to a scene with higher traffic density, such as a highway toll station and an overrun inspection station with more vehicles, the situation that the vehicles are continuously weighed with the vehicles can occur, so that the actual effective weighing length of the whole vehicle is reduced, and the accurate weighing of the vehicles is influenced again by the vibration problem.
In view of the above, in the embodiment of the present invention, in the dynamic weighing process of the vehicle, the vibration of the vehicle during weighing is sensed by using an additional sensor, and thus the weighing signal is compensated by using the vibration signal, so that the weighing accuracy is improved, and accordingly, the adaptability to the speed of the vehicle during weighing is improved.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by the skilled person without creative work belong to the protection scope of the present invention.
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings.
Fig. 4 is a plan view illustrating that a weighing apparatus according to an exemplary embodiment of the present invention is installed in a road. As shown in fig. 4, the utility model provides a weighing device for highway vehicle dynamic weighing, weighing device can include: a full vehicle weighing platform 310 for placement in a roadway 320 so as to carry the full weight of a vehicle as it passes over the full vehicle weighing platform 310; one or more load cells 330 for being disposed below the full vehicle scale platform 310 and sensing the weight of the vehicle through the full vehicle scale platform 310 to obtain a load signal related to the weight of the vehicle; and one or more vibration sensors 340 removably mounted to the full vehicle scale 310 to acquire vibration signals related to the vibration of the vehicle as the vehicle passes the full vehicle scale 310.
In an exemplary embodiment, as shown in fig. 4, a groove may be defined in the road 320, the full scale platform 310 may be disposed within the groove and an upper surface of the full scale platform 310 may be flush with a surface of the road 320, such that a vehicle may travel past the full scale platform 310. In one embodiment, the full-car platform 310 may be welded from steel plates. Further, the above-described full car platform 310 may have a rectangular parallelepiped shape, and the length of the full car platform 310 may be in the range of 1800cm to 2100cm (centimeters) and the width may be in the range of 350cm to 400 cm.
Here, since the length and width of the entire vehicle weighing platform 310 may vary widely, for convenience of description and understanding, the following definitions may be exemplarily made: when the entire vehicle weighing platform 310 is installed on the road 320, the longitudinal direction of the entire vehicle weighing platform 310 is parallel to the traveling direction of the vehicle, and the width direction of the entire vehicle weighing platform 310 is perpendicular to the traveling direction of the vehicle.
Furthermore, the utility model discloses a whole car weighing platform 310 generally is applied to among the whole car formula mode of weighing, can both apply to whole car weighing platform in order to make the whole weight of vehicle, generally needs to make whole car weighing platform 310's length be greater than vehicle length to the length that leads to whole car weighing platform is longer. Therefore, the entire vehicle weighing platform may include a plurality of single weighing platforms that are aligned and spliced into the entire vehicle weighing platform in the traveling direction of the vehicle, and the upper surfaces of the plurality of single weighing platforms may be aligned with each other in the vertical direction. In one embodiment, the single scale platform described above may have a length in the range of 80cm to 600cm (centimeters) and a width in the range of 350cm to 400 cm.
Here, it can be understood that the utility model discloses a whole car weighing platform is not limited to the mode that uses a plurality of single weighing platforms concatenation, and the whole car weighing platform of integral type also can be selected to use according to the teaching of the utility model and practical application scenario, consequently the utility model discloses a whole car weighing platform includes but not limited to a plurality of single weighing platforms.
Further, it is understood that, when the width of the entire vehicle scale table 310 is in the range of 350cm to 400cm, both sides of the entire vehicle scale table 310 with respect to the vehicle traveling direction may extend to both side edges of the road 320 in the width direction of the road 320 to fill the entire road 320 in the width direction of the road 320. It is to be understood that the above-described ranges of dimensions are exemplary only and not limiting, and that one skilled in the art may choose to use different dimensions based on the teachings and practical application of the present invention. For example, the width of the full scale platform 310 may be determined according to the width of the road 320, and the length of the full scale platform 310 may be determined according to the type of vehicle traveling on the road 320.
Fig. 5 is a sectional view illustrating that a weighing apparatus according to an exemplary embodiment of the present invention is installed in a road. As further shown in fig. 5, a load cell 330 may be disposed below the entire vehicle weighing platform 310, the load cell 330 may sense the weight of the entire vehicle weighing platform 310, and when the entire vehicle weighing platform adopts a manner of splicing a plurality of single weighing platforms, the load cell 330 may be disposed at four corners of the bottom surface of each single weighing platform to sense the weight of the vehicle using the plurality of load cells 330. In one embodiment, load cell 330 may be a load cell and may include one or more of a bridge load cell, a spoke load cell, a pillar load cell, or an S-type load cell, for example.
Fig. 6 is a schematic diagram illustrating a bridge load cell according to an exemplary embodiment of the present invention. Further, referring to fig. 4, 5 and 6, the weighing apparatus of the present invention will be described by taking a bridge-type weighing cell as an example. The upper portion of the bridge load cell has a variable cross-section beam, the top surface of which can engage the underside of the full vehicle platform 310, and the bottom of the bridge load cell can rest on the bottom of the aforementioned recess. As the vehicle travels across the full vehicle weight platform 310, the full vehicle weight platform 310 may carry the full weight of the vehicle and transfer the weight it carries to the bridge load cell. The bridge load cell deforms and thereby produces a load signal proportional to the load cell force, the load signals of the plurality of load cells summing to produce a load signal proportional to the vehicle force, which load signal can be used to calculate a measure of the weight of the vehicle.
In one embodiment, the above-mentioned weighing signal may for example comprise deformation data of a variable section beam, and the deformation data may for example be voltage data. In addition, due to the special shape and the special structure of the variable cross-section beam, each beam surface of the variable cross-section beam can have equal stress, and therefore the offset load can be effectively resisted.
As further shown in fig. 4, the full vehicle weighing platform 310 described above may have a mounting surface that is remote from the road surface, and one or more vibration sensors 340 may be removably mounted to the mounting surface of the full vehicle weighing platform 310. In one embodiment, the mounting surface may be a surface (e.g., a bottom surface) of the entire weighing platform 310 away from the road surface, and the bottom surface may be formed with one or more recesses that wholly or partially accommodate the one or more vibration sensors 340. Here, the vibration sensor 340 may be used to convert a mechanical vibration amount (displacement, velocity, acceleration, force, etc.) into a change in an electric quantity (charge, voltage, etc.) or an electric parameter (resistance, inductance, capacitance, etc.).
Specifically, the vibration sensor 340 may convert the motion of the vibrating body into an analog voltage signal, i.e., the vibration signal acquired by the vibration sensor 340 is an analog voltage signal. In one embodiment, the vibration sensor 340 may include one or more of an acceleration sensor, a velocity sensor, and a displacement sensor. In one application scenario, the vibration sensor 340 may be a piezoelectric acceleration sensor.
Fig. 7 is an exemplary structural block diagram showing a weighing apparatus according to an exemplary embodiment of the present invention. As further shown in fig. 7, the weighing apparatus of the present invention may further include: a processing unit 350 configured to: receiving the weighing signal and the vibration signal; and performing fusion processing on the weighing signal and the vibration signal so as to determine the weight of the vehicle.
In an exemplary embodiment, the load signal generated by load cell 330 and the vibration signal generated by vibration cell 340 may be transmitted to processing unit 350 for use in calculating the weight of the vehicle. In some embodiments, the processing unit 350 may comprise a data processing device, which may be, for example, a processor running signal analysis software (e.g., MATLAB).
Specifically, the processing unit 350 may receive the weighing signal generated by the weighing cell 330 and the vibration signal generated by the vibration cell 340, and may perform preprocessing such as amplification and/or analog-to-digital conversion on the received weighing signal to convert it into a processable digital signal. Further, the processing unit 350 may determine the static weight of the vehicle from the weighing signal and the vibration signal.
In some embodiments, determining the weight of the vehicle from the weighing signal and the vibration signal may include: determining a first weight measurement of the vehicle based on the weighing signal; determining a second weight measurement of the vehicle based on the vibration signal; and determining a static weight of the vehicle based on the first weight measurement and the second weight measurement.
The weighing signal and the vibration signal may each be used individually to calculate the weight of the vehicle, in one embodiment the first weight measurement determined on the basis of the weighing signal takes into account vibrations caused by dynamic vehicle driving
Can be expressed as the following equation:
wherein the content of the first and second substances,
representing a first weight measurement, W, of the vehicle determined on the basis of the weighing signal0Representing the static weight W of the vehicle0In order for the unknowns to be solved,
represents the vibration noise in the weighing signal, which is an unknown quantity, introduced by the vehicle passing by.
Likewise, the vehicle weight may be calculated based on the vibration signal sensed by the vibration sensor 340. For example, the corresponding weighing value may be calculated by integrating and other operations according to the deformation amount (e.g., deformation acceleration, deformation speed, deformation displacement, etc.) of the entire weighing platform 310 in the vertical direction sensed by the vibration sensor 340. Similarly, in another embodiment, the second weight measurement W determined based on the vibration signal may be expressed as the following equation:
W＝W0+V(t) (2)
wherein W represents a second weight measurement of the vehicle determined based on the vibration signal, W0Representing the static weight W of the vehicle0V (t) represents vibration displacement information for the unknowns to be solved for, which can be collected by the vibration sensor 340 described above.
There may be certain limitations in using the weighing signal and the vibration signal to separately calculate the weight of the vehicle. In some embodiments, the above equations (1) and (2) may be combined to determine vibration noise in the weighing signal
Further, the vibration noise is removed
The latter weighing signal is used to determine the static weight of the vehicle.
It can be analyzed that when a vehicle rolls the entire vehicle weighing platform 310 of the weighing device in the direction of travel of the vehicle, the vehicle tires can cause pressure on the entire vehicle weighing platform 310. On the one hand, this pressure causes a displacement of the entire weighing platform 310 in the vertical direction, which can be sensed by the load cell 330 in the weighing device. On the other hand, the whole vehicle weighing platform 310 is also simultaneously vibrated under the pressure, so that the whole vehicle weighing platform 310 is caused to vibrate and displace in the vertical direction, which can be sensed by the vibration sensor 340 mounted on the whole vehicle weighing platform 310. Based on this, v (t) above represents the vibration displacement information in the vertical direction sensed by the vibration sensor 340.
Different types of vibration sensors 340 may be used to sense vibration information, such as an acceleration sensor, a velocity sensor, or a displacement sensor that senses vibration acceleration signals, vibration velocity signals, and vibration displacement information, respectively. Depending on the type of vibration sensor 340, the signals may be processed differently, such as twice integrating the vibration acceleration signal, once integrating the vibration velocity signal, and so on, to obtain the desired vibration displacement information.
In an application scenario, a person skilled in the art may perform a time-frequency domain transform on the vibration displacement information by using, for example, a fourier transform, so as to decompose the vibration displacement information into a plurality of time-domain information at a plurality of frequencies, which may specifically be represented as follows:
wherein A isiRepresenting the amplitude, wiRepresents angular frequency, phiiIndicating the initial phase and N represents the amount of time domain information. Substituting this equation (3) into the above equation (2), the second weight measurement W can be expressed as:
according to the analysis (such as trigonometric series expansion) of the vibration displacement information, the amplitude A of the vibration can be directly obtainediInitial phase phiiAngular frequency wi. In some embodiments, one skilled in the art can also set the angular frequency w as desiredi。
In another application scenario, the vibration noise is
Can be similarly expressed in the following form:
wherein the content of the first and second substances,
representing the amplitude of vibration noise, wiThe angular frequency is represented by the angular frequency,
indicating the initial phase. Substituting the equation (5) into the above equation (1) to obtain a first weight measurement value
Can be expressed as:
obtaining the amplitude value by using a fitting method based on the above formula (4) and formula (6)
And initial phase
Preferably, the fitting method may be, for example, a least squares method. In some embodiments, one skilled in the art can also set the angular frequency w as desiredi. Based on this, vibration noise can be obtained, the amplitude to be obtained
And initial phase
And an angular frequency wiBy substituting into the formula (6), the static weight W of the vehicle can be obtained0：
As can be seen from equations (4) and (6), the amplitude and initial phase of the vibration noise are obtained by analyzing the vibration displacement information, and the static weight of the vehicle (for example, equation 7) is finally obtained based on the obtained vibration noise, so that the vibration noise is more accurately removed, the weighing error is reduced, and the weighing accuracy is improved.
In connection with the above-described exemplary embodiments, those skilled in the art will appreciate that the present invention has the following advantageous effects.
The utility model discloses a weighing device can utilize weighing sensor to acquire the weighing signal when the vehicle passes through to utilize vibration sensor to acquire the vibration signal of vehicle when the vehicle passes through, recycle processing unit symmetrical heavy signal and vibration signal and fuse the static weight who handles and confirm the vehicle. In addition, through adopting extra vibration sensor to acquire the vibration signal during weighing, make the utility model discloses a restriction that the weighing device does not receive vehicle speed and other vehicle short distances to follow the car to the acquisition of vibration signal to utilize this vibration signal to compensate the weighing signal, can improve the accuracy of weighing.
Furthermore, the utility model discloses a weighing device carries out the analysis through the frequency domain information to vibration signal, can obtain comparatively accurate vibration information to compensate the signal of weighing more accurately. Further, the processing unit can obtain an optimal solution for the vehicle weight by fitting the vibration information, for example, by a least squares method, so that a de-vibration weighing signal of the vehicle can be obtained. Therefore, adopt the utility model discloses an embodiment's technical scheme weighs to the dynamic vehicle, has not only reduced the error of weighing, has still solved the adaptability problem of speed.
In the above description of the present specification, the terms "fixed," "mounted," "connected," or "connected," and the like, are to be construed broadly unless otherwise expressly specified or limited. For example, with the term "coupled", it can be fixedly coupled, detachably coupled, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship. Therefore, unless the specification explicitly defines otherwise, those skilled in the art can understand the specific meaning of the above terms in the present invention according to specific situations.
From the above description of the present specification, those skilled in the art will also understand the terms used below, terms indicating orientation or positional relationship such as "upper", "lower", "front", "rear", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "central", "longitudinal", "transverse", "clockwise" or "counterclockwise" and the like are based on the orientation or positional relationship shown in the drawings of the present specification, it is for the purpose of facilitating the explanation of the invention and simplifying the description, and it is not intended to state or imply that the devices or elements involved must be in the particular orientation described, constructed and operated, therefore, the above terms of orientation or positional relationship should not be interpreted or interpreted as limiting the present invention.
In addition, the terms "first" or "second", etc. used in this specification are used to refer to numbers or ordinal terms for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present specification, "a plurality" means at least two, for example, two, three or more, and the like, unless specifically defined otherwise.
While various embodiments of the present invention have been shown and described herein, it will be obvious to those skilled in the art that such embodiments are provided by way of example only. Numerous modifications, changes, and substitutions will occur to those skilled in the art without departing from the spirit and scope of the present invention. It should be understood that various alternatives to the embodiments of the invention described herein may be employed in practicing the invention. The following claims are intended to define the scope of the invention and, therefore, to cover module compositions, equivalents, or alternatives falling within the scope of these claims.
Claims (7)
1. A weighing apparatus for dynamic weighing of road vehicles, said weighing apparatus comprising:
a full vehicle weighing platform for placement in a roadway to carry the full weight of a vehicle as it passes the full vehicle weighing platform;
a plurality of load cells for being disposed below the full vehicle weighing platform and sensing a weight of the vehicle through the full vehicle weighing platform so as to acquire a weighing signal related to the weight of the vehicle;
a plurality of vibration sensors removably mounted to the vehicle platform scale to acquire vibration signals related to vibration of the vehicle as the vehicle passes the vehicle platform scale; and
a processing unit configured to:
receiving the weighing signal and the vibration signal; and
and performing fusion processing on the weighing signal and the vibration signal so as to determine the weight of the vehicle.
2. The weighing apparatus of claim 1, wherein the full vehicle weighing platform is adapted to be mounted in a recess provided in the roadway.
3. The weighing apparatus of claim 1, wherein the full vehicle weighing station comprises a plurality of single stations aligned in a direction of travel of the vehicle and having upper surfaces vertically aligned with one another.
4. The weighing apparatus of claim 1, wherein the sides of the full vehicle weighing platform with respect to the direction of vehicle travel extend to the two side edges of the roadway.
5. The weighing apparatus of claim 1, wherein the load cell comprises one or more of a bridge load cell, a spoke load cell, a pillar load cell, or an S-shaped load cell.
6. The weighing apparatus of claim 1, wherein the vibration sensor comprises one or more of an acceleration sensor, a velocity sensor, or a displacement sensor.
7. The weighing apparatus of claim 3, wherein said single scale platform has a mounting surface remote from the roadway, and said plurality of vibration sensors are removably mounted to said mounting surface of said single scale platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023259047.XU CN214224313U (en) | 2020-12-30 | 2020-12-30 | Weighing device for dynamic weighing of road vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023259047.XU CN214224313U (en) | 2020-12-30 | 2020-12-30 | Weighing device for dynamic weighing of road vehicles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214224313U true CN214224313U (en) | 2021-09-17 |
Family
ID=77707801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023259047.XU Active CN214224313U (en) | 2020-12-30 | 2020-12-30 | Weighing device for dynamic weighing of road vehicles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214224313U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114235119A (en) * | 2021-11-29 | 2022-03-25 | 北京万集科技股份有限公司 | Vehicle axle number determining method, device and system and storage medium |
| CN114821458A (en) * | 2022-03-15 | 2022-07-29 | 武汉众智数字技术有限公司 | Vehicle overweight early warning method |
-
2020
- 2020-12-30 CN CN202023259047.XU patent/CN214224313U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114235119A (en) * | 2021-11-29 | 2022-03-25 | 北京万集科技股份有限公司 | Vehicle axle number determining method, device and system and storage medium |
| CN114235119B (en) * | 2021-11-29 | 2024-05-14 | 北京万集科技股份有限公司 | Vehicle axle number determining method, device, system and storage medium |
| CN114821458A (en) * | 2022-03-15 | 2022-07-29 | 武汉众智数字技术有限公司 | Vehicle overweight early warning method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214224313U (en) | Weighing device for dynamic weighing of road vehicles | |
| CN112816045B (en) | Dynamic weighing method and dynamic weighing device for vehicle | |
| JP4435383B2 (en) | Vertical profile measuring device | |
| CN101523179B (en) | System for detecting the pressure in a vehicle tyre and/or speed of the vehicle | |
| CN101831862B (en) | Laser high-speed detection system for road surface deflection | |
| CN204978387U (en) | A weighing system and car for vehicle load | |
| US20150308926A1 (en) | Vibration analysis method and vibration analysis device of vehicle | |
| CN102288269B (en) | Weighing stress device as well as vehicle dynamic weighing system and method | |
| CN204188244U (en) | A kind of dynamic weighing device for vehicle | |
| CN112798089B (en) | Dynamic weighing method and dynamic weighing device for vehicle | |
| CN110530480A (en) | A kind of bridge dynamic weighing system and its method based on range laser sensor | |
| CN214224317U (en) | Weighing device for dynamic weighing of road vehicles | |
| CN214224319U (en) | Weighing device for dynamic weighing of road vehicles | |
| CN215524801U (en) | Weighing device for dynamic weighing of road vehicles | |
| JP3467906B2 (en) | Axle load measuring device | |
| CN214224309U (en) | Weighing device for dynamic weighing of road vehicles | |
| CN214224318U (en) | Weighing device for dynamic weighing of road vehicles | |
| CN219141987U (en) | Weighing device for dynamic weighing of road vehicle | |
| CN112697249A (en) | Dynamic vehicle overrun determination method and determination system | |
| CN202119516U (en) | Weighing stress device and vehicle dynamic weighing system | |
| PHAM et al. | An estimation method for pavement weigh-in-motion system with preliminary experiment | |
| JPH10185665A (en) | Axle load measuring device | |
| CN108534753A (en) | A kind of road surface power spectrum measurement method based on analysis of wheel vertical dynamic loading | |
| JP2712537B2 (en) | Road surface measurement method | |
| JPH10311752A (en) | Vehicle weight metering device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |