Integrated detection system for highway
Technical Field
The invention relates to the technical field of parameter measurement of public transportation motor vehicles, in particular to an integrated detection system for a road.
Background
During the running process of the motor vehicle, the motor vehicle is often required to be braked, and the force given to the motor vehicle by a vehicle brake is divided into braking force and sideslip force. The braking time of the motor vehicle is determined by the magnitude of the braking force, and the too small braking force can cause the too long braking time of the motor vehicle, so that the danger of collision with other motor vehicles can occur at the moment, and the normal passing of road vehicles is seriously influenced. Meanwhile, the brake of each wheel may be inconsistent due to mechanical errors in the locking process of two or four driving wheels of the motor vehicle, and at the moment, the motor vehicle generates a side slip force which forms a certain angle with the forming direction. In the running process of the motor vehicle, once the sideslip force of the motor vehicle is too large, the motor vehicle is deviated, and collides or scratches with the motor vehicle in an adjacent lane, so that traffic accidents are caused.
In the prior art, a three-dimensional combined force measuring device is adopted to detect the braking force of a motor vehicle. Fig. 1 shows a schematic diagram of a three-dimensional combined force-measuring device, in which a running vehicle is stopped on a detection plate in a fixed area, and the gravity (z direction) of the vehicle measured by a sensor B in the vertical direction, the braking force (y direction) measured by a sensor C in the horizontal direction, and the sideslip force (x direction) measured by a sensor a in the horizontal direction are detected. However, as shown in fig. 2, after the upper surface of the table top is stressed and compressed downward, the table top expands and deforms in the x and y directions due to the unchanged overall volume, and therefore, even if the table top is not stressed in the x and y directions, the sensors in the x and y directions still generate signals, that is, Fx and Fy are affected by Fz, and at this time, three forces obtained by the sensors are disturbed, so that a phenomenon of inter-dimensional coupling occurs, and the data accuracy obtained by the three-dimensional force sensor is insufficient.
Therefore, a more accurate detection platform needs to be provided on the highway to monitor the braking force of the motor vehicle in real time, so that the motor vehicle with the problem of the braking force is prevented from causing damage to normal road running.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defect that the three-dimensional combined force measuring device in the detection system in the prior art has low measurement precision on the braking force.
Therefore, the invention provides an integrated detection system for a road, which comprises: at least one three-dimensional combined force measuring device for detecting the braking force and the weight of the motor vehicle; the three-dimensional combined force measuring device comprises: the table top is a cube; the horizontal sensors are arranged below the table top and are parallel to the horizontal side length of the table top; the vertical sensors are vertically arranged below the table top; the horizontal connecting support with the installation through hole, every horizontal sensor's both ends are provided with horizontal connecting support respectively, horizontal sensor with the installation through hole only can wind the axis swivelling joint of installation through hole is connected, horizontal connecting support with mesa fixed connection.
The integrated detection system also comprises a photographing system which is used for grabbing the license plate of the motor vehicle running on the table board;
the triggering device is used for triggering the photographing system to start and judging whether a vehicle runs;
the alarm device gives an alarm when the data obtained by the measuring platform does not meet the required value;
the vehicle overall dimension detection system can automatically measure the length, width and height of a passing vehicle.
The integrated detection system further comprises vertical connecting bearings arranged at two ends of the vertical sensor, the vertical sensor can only rotate around the axis of the vertical connecting bearings, and the vertical connecting bearings arranged at the top are fixedly connected with the table board.
And a rolling bearing is fixedly arranged in the mounting through hole of the integrated detection system.
And the side wall of the mounting through hole forms an outer ring of the rolling bearing, and an inner ring of the rolling bearing is fixedly matched with the end part of the horizontal sensor.
The level sensors include a first level sensor parallel to the long side and a second level sensor parallel to the wide side.
And a rib plate vertical to the table top is fixed below the table top, and the horizontal connecting bracket is fixedly connected with the rib plate.
The integrated detection system further comprises a fixing plate, wherein the fixing plate is arranged below the vertical sensor, and the vertical connecting bearing arranged at the bottom is fixedly connected with the fixing plate.
The outer side of the vertical sensor is sleeved with a sheath which is connected with the rib plate and is vertically connected with the table top, and the sheath covers and buckles the first vertical connecting bearing.
The floor is connected with a limiting plate, a buckling cavity is welded on the fixing plate, and the limiting plate extends into the buckling cavity to prevent the table board from being separated from the fixing plate.
The limiting plate includes: the horizontal part is attached and fixed on the rib plate through screws; the lock tongue is detachably connected to the horizontal part and extends into the buckling cavity.
The integrated detection system further comprises a timing device for calculating the time from the beginning of braking to the complete stop of the wheels of the motor vehicle on the table top.
The trigger system is a ground induction coil and is laid on the table board, a signal transmitting device is connected to the ground induction coil, and a signal receiving device corresponding to the signal transmitting device is installed on the photographing system.
The integrated detection system further comprises: and the processor is used for collecting signals obtained by the plurality of three-dimensional combined force measuring devices, integrating the signals and matching the signals with the data obtained by the photographing system.
The number of the vertical sensors is four, and the vertical sensors are evenly distributed on four corners of the table board.
The horizontal connecting support and the vertical connecting bearing are both joint bearings.
The three-dimensional combined force measuring device is laid in a road where a motor vehicle runs, a steel plate is covered above the table board, and the steel plate is flush with the road surface.
The technical scheme of the invention has the following advantages:
1. according to the integrated detection system provided by the invention, the three-dimensional combined force measuring device is provided with horizontal connecting supports with mounting through holes, the two ends of each horizontal sensor are respectively provided with the horizontal connecting supports, the horizontal sensors and the mounting through holes can only be in rotating fit connection around the axis of the mounting through holes, and the horizontal connecting supports are fixedly connected with the table board. When the table top is stressed by a force in the vertical direction (z axis), the stress point of the table top moves downwards, but the horizontal sensors in the x axis direction and the y axis direction are only connected with the mounting through hole in a rotating fit mode around the axis of the mounting through hole, and the deformation of the table top in the vertical direction is absorbed by the horizontal connecting support, so that the horizontal sensors are kept stable and cannot be stretched or extruded, and therefore the horizontal sensors in the x axis direction and the y axis direction cannot send signals, and the inter-dimensional coupling condition is avoided. ,
the three-dimensional combined force measuring device provided by the invention can effectively avoid the influence of the gravity of the motor vehicle on the braking force and the sideslip force in the measuring process, thereby accurately measuring the braking force of the motor vehicle.
2. The integrated detection system provided by the invention further comprises vertical connecting bearings arranged at two ends of the vertical sensor, the vertical sensor can only rotate around the axis of the vertical connecting bearings, and the vertical connecting bearings arranged at the top are fixedly connected with the table top.
Through vertical connection bearing can dissolve the deformation of mesa along the horizontal direction for vertical sensor can only monitor the power that is located vertical direction, is favorable to improving measurement accuracy, reduces or even eliminates the inter-dimensional coupling.
3. The integrated detection system further comprises a photographing system used for grabbing the license plate of the motor vehicle running on the table board; the triggering device is used for triggering the photographing system to start; the vehicle contour dimension detection system is used for detecting the length, width and height dimensions of a passing vehicle and judging whether the passing vehicle is ultrahigh or ultrawide and does not meet the regulations of the road traffic safety law; the alarm device gives an alarm when the data obtained by the measuring platform does not meet the required value;
through the photographing equipment, the braking force of the defective motor vehicle can be captured in real time, the number plate information of the vehicle is archived and then networked, and in future, when the vehicle is captured again by the photographing equipment at the intersection, the vehicle can be subjected to selective inspection again, so that the vehicle is prevented from getting on the road again in a defective state. Meanwhile, for a motor vehicle, the parameters (braking force) of the motor vehicle correspond to the number plate of the motor vehicle, when the photographing system detects the number plate of the motor vehicle, the motor vehicle is networked to determine the rated braking force of the motor vehicle, and then the rated braking force is compared with the data obtained by the three-dimensional combined force measuring device, once the braking force of the motor vehicle is in a problem, the alarm is immediately started, so that a worker controls a driver and the motor vehicle.
4. According to the integrated detection system provided by the invention, the three-dimensional combined force measuring device is paved in a road where a motor vehicle runs, a steel plate is covered above the table top, and the steel plate is flush with the road surface. The steel plate can prevent the table-board of the three-dimensional combined force measuring device from directly contacting with the tire of the motor vehicle, and is beneficial to prolonging the service life of the three-dimensional combined force measuring device.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of the connection between a prior art strain gage and a table as mentioned in the background of the invention;
FIG. 2 is a schematic diagram of the deformation of the mesa when the dimensional coupling occurs as mentioned in the background of the invention;
FIG. 3 is a top view of the three-dimensional combination force measuring device of the integrated detection system provided by the present invention;
FIG. 4 is a front view of the three-dimensional combination force measuring device of the integrated detection system provided by the present invention;
FIG. 5 is a schematic view of the connection of the vertical connecting bearing to the vertical sensor in the three-dimensional combined force measuring device of the integrated detection system provided by the present invention;
fig. 6 is a schematic structural view of the position-limiting plate and the buckling cavity in the three-dimensional combined force-measuring device in the integrated detection system provided by the invention.
Description of reference numerals:
1-a table top; 2-a vertical sensor; 3-vertical connecting bearings; 5-a first level sensor; 6-a second level sensor; 7-a rib plate; 8-horizontal connecting bracket; 9-fixing the plate; 10-a sheath; 11-a limiting plate; 111-a horizontal portion; 112-a locking tongue; 12-snap-fit cavity.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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 invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
This embodiment provides an integrated detecting system for highway, includes: at least one three-dimensional combined force measuring device for detecting the braking force and the weight of the motor vehicle;
the three-dimensional combined force measuring device comprises: the table top 1 is a cube; the horizontal sensors are arranged below the table board 1 and are parallel to the horizontal side length of the table board 1; the vertical sensors 2 are vertically arranged below the table board 1; horizontal linking bridge 8 with mounting hole, every horizontal sensor's both ends are provided with horizontal linking bridge 8 respectively, horizontal sensor with mounting hole only can wind the axis rotation cooperation of mounting hole is connected, horizontal linking bridge 8 with mesa 1 fixed connection.
Horizontal linking bridge 8 with mounting hole, every horizontal sensor's both ends are provided with horizontal linking bridge 8 respectively, horizontal sensor with mounting hole only can wind the axis rotation cooperation of mounting hole is connected, horizontal linking bridge 8 with mesa 1 fixed connection. When the table board 1 is subjected to a force in the vertical direction (z axis), the force-bearing point of the table board 1 moves downwards, but because the horizontal sensors in the x axis and the y axis direction are connected with the mounting through hole only in a rotating fit manner around the axis of the mounting through hole, the deformation of the table board 1 in the vertical direction is absorbed by the horizontal connecting bracket 8, so that the horizontal sensors are kept stable and cannot be stretched or extruded, and therefore the horizontal sensors in the x axis and the y axis cannot send signals, and the inter-dimensional coupling condition is avoided.
For the same reason, when the x-axis of the table top 1 is acted upon, the y-axis and the z-axis do not disturb the force in the x-axis.
Specifically, the three-dimensional combined force measuring device is paved in a road where a motor vehicle runs, a steel plate is covered above the table top, and the steel plate is flush with the road surface. The steel plate can prevent the table-board of the three-dimensional combined force measuring device from directly contacting with the tire of the motor vehicle, and is beneficial to prolonging the service life of the three-dimensional combined force measuring device.
Meanwhile, the detection system provided by the embodiment further includes: the photographing system is used for grabbing the license plate of the motor vehicle running on the table board;
the triggering device is used for triggering the photographing system to start and judging whether a vehicle runs;
the alarm device gives an alarm when the data obtained by the measuring platform does not meet the required value;
the vehicle overall dimension detection system can automatically measure the length, width and height of a passing vehicle.
Through the photographing equipment, the braking force of the defective motor vehicle can be captured in real time, the number plate information of the vehicle is archived and then networked, and in future, when the vehicle is captured again by the photographing equipment at the intersection, the vehicle can be subjected to selective inspection again, so that the vehicle is prevented from getting on the road again in a defective state. Meanwhile, for a motor vehicle, the parameters (braking force) of the motor vehicle correspond to the number plate of the motor vehicle, when the photographing system detects the number plate of the motor vehicle, the motor vehicle is networked to determine the rated braking force of the motor vehicle, and then the rated braking force is compared with the data obtained by the three-dimensional combined force measuring device, once the braking force of the motor vehicle is in a problem, the alarm is immediately started, so that a worker controls a driver and the motor vehicle.
Meanwhile, the embodiment also comprises a data uploading system, and the system uploads the detected information and the related photos to each level of data platform through a network for the same coordination management.
The detection system provided by this embodiment further comprises a timing device for calculating the time from the start of braking to the complete stop of the wheels of the motor vehicle on the table. Since the time from locking to complete stopping differs between the wheels of a motor vehicle, the time is called a braking sequence in the field of motor vehicles, and the braking sequence is an important index for measuring the parking stability of the motor vehicle. In this embodiment, the timing device is connected to the three-dimensional combined force measuring device, and can measure the time from the start to the end of the braking force of each wheel, thereby calculating the braking timing sequence.
In this embodiment, the triggering system is a ground induction coil, and is laid on the table top, the ground induction coil is connected with a signal transmitting device, and the photographing system is provided with a signal receiving device corresponding to the signal transmitting device. Once the motor vehicle triggers the ground induction coil, the ground induction coil immediately transmits a signal to the photographing device, and the grabbing task of the motor vehicle license plate is completed.
In this embodiment, the detection system further includes: and the processor is used for collecting signals obtained by the plurality of three-dimensional combined force measuring devices, integrating the signals and matching the signals with the data obtained by the photographing system.
In order to increase the accuracy of the whole measurement process, the three-dimensional combined force measuring devices can be laid in a plurality, each three-dimensional combined force measuring device can measure the braking force of the motor vehicle, and after a plurality of data are collected, the braking force information of the vehicle is obtained by processing the data through the processor.
Meanwhile, the processor can be used for connecting the braking force of the motor vehicle, the number plate and the alarm in series, once the braking force of the motor vehicle with the specific number plate does not reach the standard, the processor can drive the alarm to start at the moment, and the unqualified motor vehicle is buckled on site.
Meanwhile, the processor can upload the braking force information of the motor vehicle and the number plate information of the motor vehicle to the internet, thereby realizing nationwide monitoring.
Meanwhile, the detection system passed by the embodiment also comprises a portal frame, and the length, the width and the height of the motor vehicle can be measured through the portal frame.
In summary, the detection system provided by the embodiment can obtain the braking force, the sideslip force and the gravity of the motor vehicle, the number plate and the braking time sequence of the motor vehicle, and the vehicle body sizes of the length, the width and the height of the motor vehicle.
Example 2
In the present embodiment, the force measuring device is made based on embodiment 1, as shown in fig. 3 and 4, a rib plate 7 perpendicular to the table top 1 is fixed below the table top 1 in the three-dimensional combined force measuring device, and the horizontal connecting bracket 8 is fixedly connected to the rib plate 7.
Meanwhile, as shown in fig. 5, the three-dimensional combined force measuring device provided in this embodiment further includes vertical connecting bearings 3 disposed at two ends of the vertical sensor 2, the vertical sensor 2 can only rotate around an axis of the vertical connecting bearings 3, and the vertical connecting bearing 3 disposed at the top is fixedly connected to the table top 1.
Through vertical connection bearing 3 can dissolve the deformation of mesa 1 along the horizontal direction for vertical sensor 2 can only monitor the power that is located vertical direction, is favorable to improving measurement accuracy, reduces or even eliminates dimension intercoupling.
Specifically, as shown in fig. 4, a rolling bearing is fixedly disposed in the mounting through hole. And the side wall of the mounting through hole forms an outer ring of the rolling bearing, and an inner ring of the rolling bearing is fixedly matched with the end part of the horizontal sensor.
In this embodiment, the level sensors include a first level sensor 5 parallel to the long side, and a second level sensor 6 parallel to the wide side.
Specifically, in the field of vehicle detection, it is necessary to stop a running vehicle on a detection plate in a fixed area, and detect the gravity in the vertical direction, the braking force in the horizontal direction, and the lateral slip force perpendicular to the braking force in the horizontal direction of the vehicle.
In the present exemplary embodiment, the braking force of the motor vehicle is measured by means of the first level sensor 5 and the sideslip force of the motor vehicle is measured by means of the second level sensor 6. The weight of the motor vehicle is measured by the vertical sensor 2. And the coupling effect between these three forces is low.
In this embodiment, the three-dimensional combined force measuring device further includes a fixing plate 9 disposed below the vertical sensor 2, and the vertical connecting bearing 3 disposed at the bottom is fixedly connected to the fixing plate 9.
The fixing plate 9 is cast in concrete or connected to the ground. Meanwhile, a sheath 10 which is connected with the rib plate 7 and is vertically connected with the table board 1 is sleeved on the outer side of the vertical sensor 2, and the sheath 10 covers and buckles the first vertical connecting bearing 3.
As shown in fig. 6, in order to connect the table top 1 and the fixing plate 9 into a whole, in this embodiment, the rib plates 7 are connected with limiting plates 11, the fixing plate 9 is welded with buckling cavities 12, and the limiting plates 11 extend into the buckling cavities 12 to prevent the table top 1 and the fixing plate 9 from being separated.
Specifically, the limit plate 11 includes: a horizontal part 111 which is fixed to the rib 7 by screws; and a latch 112 detachably coupled to the horizontal portion 111 and extending into the fastening chamber 12.
In this embodiment, the number of the vertical sensors 2 is four, and the vertical sensors are uniformly distributed on four corners of the table top 1. The number of the first level sensors 5 is two, and the first level sensors are arranged at the positions of wheels of the motor vehicle. The second level sensor 6 is one and is arranged between the two first sensors. However, the number of the first level sensors 5 and the second level sensors 6 is not limited to the number provided in this embodiment, and may be increased or decreased according to the use environment of the three-dimensional combined force measuring device.
Example 3
The present embodiment is made on the basis of embodiments 1 and 2, wherein both the horizontal connecting bracket 8 and the vertical connecting bearing 3 are joint bearings.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.