CN217034929U - Adjustable curve driving safety guidance system - Google Patents

Abstract

The utility model relates to an adjustable curve driving safety guidance system which comprises at least one slide rail and at least one slide block, wherein the slide rail is parallel to the line shape of a road and is arranged on the outer side of the road, the slide block is arranged on the slide rail, can move along the slide rail and can be positioned on the slide rail, a follow-up part is arranged on the slide block, and the follow-up part can move along with the slide block. The adjustable curve driving safety guidance system enables the position of the speed limit sign, the displayed speed limit value, the position, the turning angle and the visibility of the driving guidance sign, the position of the road condition detection device and the like to be adjusted according to the requirements, thereby meeting the requirement of managing and controlling passing vehicles under different road surface wet and slippery degrees and visibility conditions, providing convenient conditions for implementing various curve driving guidance control strategies and providing a hardware basis for intelligent traffic management and control of a road curve area.

Description

An adjustable curve driving safety guidance system

technical field

The utility model relates to the field of traffic safety, in particular to an adjustable driving safety guidance system suitable for road curves.

Background technique

Road bends are prone to traffic accidents. Due to the change in road alignment, the driver of the vehicle is required to appropriately adjust the traveling direction and speed of the vehicle. In bad weather such as fog, haze, rain, snow, sand and dust, due to low visibility, drivers cannot see the curves clearly, and cannot quickly and accurately identify the road outline, which is more likely to cause collisions with guardrails; at the same time, in bad weather If the driver cannot control the vehicle to decelerate in time at the curve, the road will be slippery, and the vehicle will easily slip or even roll over. Therefore, in bad weather, slippery roads and low visibility will adversely affect the safety of driving in curves.

At present, highways generally have speed limit signs in front of curves and linear guidance signs at the curves to remind drivers to slow down, pay attention to the changes in the alignment of the road ahead, and guide the driving direction, thereby improving driving safety. However, in bad weather, the visual recognition effect of the sign, the friction performance of the road surface, and the braking performance of the vehicle will change with the change of visibility and the wetness of the road surface. However, the existing speed limit signs and linear guidance signs are fixedly installed on both sides of the curve, and it is impossible to adjust the speed limit value of the curve, the setting position of the speed limit signs, and the linear guidance according to the changes of visibility and road surface wetness. It is impossible to adjust the visibility of various signs accordingly; it may even cause safety hazards due to the inability to provide appropriate reminders and warnings to drivers. It can be seen that the existing curve driving guidance facilities cannot adapt to the changes in the wet and slippery road surface and visibility, and cannot meet the needs of traffic control under adverse weather conditions.

To sum up, it is necessary to design an adjustable curve driving safety guidance system to meet the needs of traffic control under different road wetness and visibility conditions, to solve the safety guarantee problem of curve driving under adverse weather conditions, and to meet the needs of traffic control for traffic control. Efficiency and intelligence needs.

Utility model content

The technical problem to be solved by the utility model is to overcome the defect that the safety facilities for road curves in the prior art cannot be adjusted correspondingly according to the changes of road wetness and visibility conditions, so as to meet the demand for safety guarantee of driving on curves under adverse weather conditions .

In order to solve the above technical problems, the present invention provides an adjustable driving safety guidance system for cornering, the adjustable driving safety guidance system for cornering includes at least one sliding rail and at least one sliding block, the sliding rail is parallel to the road The linear shape of the sliding block is arranged on the outside of the road, the sliding block is arranged on the sliding rail, can move along the sliding rail and can be positioned on the sliding rail, and the sliding block is provided with a follow-up component, so The follower part can move with the slider.

Preferably, the sliding block further comprises a driving device and a positioning sensing device, the driving device is used for driving the sliding block to move relative to the sliding rail, and the positioning sensing device is used for determining that the sliding block is relative to the slide rail. the position of the slide rail.

Preferably, the slide rail includes a first slide rail and a second slide rail, the first slide rail is parallel to the second slide rail and is provided above the second slide rail, and the slide block includes a set of The first sliding block on the first sliding rail and the second sliding block arranged on the second sliding rail, the follower part is connected with the first sliding block and the second sliding block at the same time.

Preferably, the follow-up component is a variable speed limit sign, and the variable speed limit sign can display a speed limit value.

Preferably, the follow-up component is a driving-inducing sign, and the driving-inducing sign includes a sign board and a lamp bead array overlapping with the indication area on the sign board.

Preferably, each lamp bead in the lamp bead array is an LED lamp bead that can emit light in three colors of white, yellow and red.

Preferably, the driving guidance sign is mounted on the sliding block through a rotating column, the rotating column includes an upper column and a lower column, the lower column is connected with the sliding block, and the upper column is connected with the The driving induction mark is connected, and the upper column can freely rotate relative to the lower column around the common axis of the two.

Preferably, the follow-up component is a road surface condition detection device, and the road surface condition detection device can determine the wetness of the road surface.

Preferably, the adjustable curve driving safety guidance system further includes a visibility detection device, which can detect the visibility of the area where it is located.

Preferably, the adjustable curve driving safety guidance system further includes a vehicle detector capable of detecting information of vehicles passing on the road.

Through the adjustable curve driving safety guidance system of the utility model, the position of the speed limit sign and the displayed speed limit value, the position, turning angle and visibility of the driving guidance sign, the position of the road surface condition detection device, etc. It needs to be adjusted to meet the needs of controlling the passing vehicles under different road surface wetness and visibility conditions, providing convenient conditions for the implementation of various curve driving induction control strategies, and intelligent traffic in the highway curve area. Control provides the hardware foundation.

Description of drawings

1 shows a schematic diagram of the overall structure of an adjustable curve driving safety guidance system according to a preferred embodiment of the present invention;

Fig. 2 shows the structural schematic diagram of the sliding rail and the sliding block of the adjustable curve driving safety guidance system according to the preferred embodiment of the present invention;

3A-3D show schematic diagrams of a three-color LED linear guidance sign board of an adjustable curve driving safety guidance system according to a preferred embodiment of the present invention;

FIG. 4 shows a schematic diagram of the connection relationship of each component of the adjustable curve driving safety guidance system according to a preferred embodiment of the present invention;

FIG. 5 shows a schematic structural diagram of a rotating column of an adjustable curve driving safety guidance system according to a preferred embodiment of the present invention.

Detailed ways

The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. Those skilled in the art should realize that the present invention is not limited to the specific embodiments described herein, and those skilled in the art can make modifications and changes according to the concept of the present invention.

FIG. 1 shows a schematic diagram of the overall structure of an adjustable curve driving safety guidance system 10 according to a preferred embodiment of the present invention. As shown in FIG. 1 , the adjustable curve driving safety guidance system 10 includes: a slide rail 11 , a slider 12 , a variable speed limit sign 13 , a road surface condition detection device 14 , a visibility detection device 15 , a driving guidance sign 16 , a vehicle detector 17 and controller 18.

The slide rail 11 is arranged on the outside of the road along the curve, basically parallel to the line of the road. The slide rail 11 can be built by adhering to the roadside guardrail on the outside of the highway, fixed on the outside of the guardrail, or can also be supported by other special or shared support devices with other equipment.

The sliding block 12 is arranged on the sliding rail 11 and can move along the sliding rail 11 at least within a certain range. The adjustable curve driving safety guidance system 10 may include a plurality of sliders 12, and the sliders 12 are respectively used to set the variable speed limit sign 13, the road surface condition detection device 14 and the driving guidance sign 16, so as to drive these devices along the road. The slide rail 11 moves.

FIG. 2 shows a schematic structural diagram of the sliding rail 11 and the sliding block 12 in the adjustable curve driving safety guidance system 10 according to the preferred embodiment of the present invention. As shown in FIG. 2 , the adjustable safety guidance system 10 for driving on curves includes two slide rails 11 arranged one above the other and in parallel, which are respectively attached to the guardrail 22 on the roadside through corresponding brackets 21 . Each sliding rail 11 is provided with a corresponding sliding block 12 respectively. The sliding block 12 can slide in the extending direction of the sliding rail 11 and can be positioned at a designated position as required. In this embodiment, the sliding rail 11 is a steel member with a cross-section similar to an "H"-shaped structure, and the sliding block 12 has a structure similar to a "concave" shape placed laterally, and fits in the "H" shape by its own structure. on the side of the structure. Brackets 23 are respectively provided on the two sliders 12 corresponding to the upper and lower sides. Both brackets 23 are connected to the upright column 24 , and the upper part of the upright column 24 is used to install the variable speed limit sign 13 . The structure of this double slide rail distributes the weight of the components it carries to the two slide rail-slider joints, which is more conducive to ensuring the stability of the entire structure. Similarly, brackets or rotating uprights 50 (see FIG. 5 ) may also be installed on the bracket 23 of the slider 12 for installing the road condition detection device 14 or the driving guidance sign 16 respectively. Those skilled in the art can understand that the structure and matching manner of the sliding rail 11 and the sliding block 12 are not limited to the above-mentioned specific embodiments.

The slider 12 further includes a driving device, a positioning sensing device, a communication device and a control device. The driving device is used to drive the sliding block 12 to move relative to the sliding rail 11, the positioning sensing device is used to determine the position of the sliding block 12 relative to the sliding rail 11 and correspondingly generate the position information of the sliding block, and the communication device is used for wireless and/or wired The communication between the slider 12 and the controller 18 is realized in a way. The control device is connected in communication with the driving device, the positioning sensing device and the communication device, and is used to control the movement of the slider 12 based on the slider position information and the control command obtained through the communication device, so as to move the slider 12 to a designated position.

Those skilled in the art can understand that the positioning sensing device can determine the position and relative change of the slider 12 relative to the slide rail 11 by means of the cooperation relationship between the mechanical components, and can also detect the slider 12 through a common position/displacement sensor. Changes in the position on the slide rail 11 and the relative movement between the two.

In a preferred embodiment of the present invention, the slider 12 further includes a stepper motor, and the rotation of the stepper motor is converted into a linear motion through a transmission method such as a gear, a rack or a chain to drive the slider 12 to move along the slide rail 11 , and the rotation angle of the stepping motor can also be used as a parameter representing the position of the slider 12 relative to the slide rail 11 .

As shown in FIG. 2 , a protective cover 25 can also be provided above the slide rail 11 to protect the slide rail 11 and the slider 12 from bad weather, and block wind, rain, snow, sand, etc. from the slide rail. 11 is in contact with the slider 12 in a large area to ensure the normal operation of the system in bad weather.

The overall structure of the protective cover 25 is similar to a rectangle, and is arranged along the slide rail 11, and the upper end can be set as a slope, which is conducive to drainage. The lower end of the protective cover 25 may be provided with support columns at certain intervals to support the protective cover 25 . Inspection doors can be set at certain intervals at the outer end of the protective cover 25, which is convenient for technicians to maintain and inspect the slide rails and sliders. At the same time, in order not to affect the movement of the components carried on the slider 11 , the protective cover 25 can provide a passage for the connecting device to move.

In the preferred embodiment of the present invention, the variable speed limit sign 13 adopts an LED variable speed limit sign board, which is installed on the slider 12 through the upright column 24 and faces the upstream direction of the road, and is used for passing vehicles. The driver displays the speed limit for the road ahead. Driven by the slider 12, the position of the variable speed limit sign 13 can be adjusted within a range of 50-300 meters before the starting point of the curve as required, so as to adapt to different speed limit requirements and/or different visibility and slippery conditions The need for the setting position of the variable speed limit sign 13 .

The variable speed limit sign 13 further includes communication means and control means. The communication device is used to realize the communication between the variable speed limit sign 13 and the controller 18 in a wireless and/or wired manner. The control device is connected in communication with the communication device for adjusting the speed limit value displayed on the LED variable speed limit sign board based on the control command obtained via the communication device.

In a preferred embodiment of the present invention, the road surface condition detection device 14 is installed on the slider 12 through a bracket, and can move within a range of 0 to 50 meters before the starting point of the curve under the driving of the slider 12 . The road surface condition detection device 14 includes a road surface condition detector, which detects road conditions such as dryness, wetness, water accumulation, frost, icing, snow accumulation, mixture of ice and water, and information such as the thickness of water accumulation, the thickness of ice coverage, and the thickness of snow accumulation. , to determine the wetness of the road surface in real time.

Since the external environment before the curve and the curve are in the same external environment, the road surface state can be considered to be the same, and the road surface state before the curve can represent the road surface state of the curve. Setting the road surface condition monitoring device 14 before the starting point of the curve can prevent it from interfering with the driving guidance sign 17 moving within the curve range.

Since the road surface condition detection device 14 can move with the slider 12 , it can detect road conditions at different positions, such as measuring the wetness of the road surface every certain distance, thereby avoiding the problem of inaccurate detection of a single fixed position.

The road surface condition detection device 14 also includes a communication device for communicating with the controller 18 in a wireless and/or wired manner, so as to transmit the detection result of the road surface wetness to the controller 18 and receive instructions and data from the controller 18 .

The visibility detection device 15 is used to detect the visibility of the area where it is located, and it is usually installed on the roadside, for example, on the inner side of the highway guardrail, and a transmission-type visibility meter or a scattering-type visibility meter can be used. The visibility detection device 15 also includes a communication device for The visibility detection results are communicated to and received from the controller 18 by wireless and/or limited means and instructions and data. Under the control of the controller 18, the visibility detection device 15 may detect the visibility of the curve area at preset time intervals.

The adjustable curve driving safety guidance system 10 includes a plurality of driving guidance signs 16 , and each driving guidance mark 16 is mounted on the slider 12 through a rotating column 50 (see FIG. 5 ). Driven by the sliding block 12 , the driving guidance mark 16 can move within the range from the starting point of the curve to the ending point of the slide rail 11 , so as to be set at an appropriate position as required.

In a preferred embodiment of the present invention, the driving guidance sign 16 can be a three-color LED linear guidance sign board (see FIGS. 3A-3D ). In addition to having a layout that conforms to the relevant current national standards, it is also included in the sign board. The LED lamp bead arrays are arranged overlapping on the white arrow area, as shown in Figure 3A-Figure 3D. The sign board itself has a retro-reflection function, which can reflect the light shining on it to remind the driver of the passing vehicle to pay attention to the change of the road alignment. In adverse weather conditions with low visibility, LED lamp beads can be lit to improve the visibility of the sign board. Each lamp bead in the lamp bead array is a lamp bead that can emit light in three colors, white, yellow, and red, so that under the control of the controller 18, different light-emitting modes, such as full white, can be realized ( FIG. 3A ) , full yellow (Figure 3B), full red, three-color (Figure 3C) or two-color (Figure 3D) and/or dynamic effects of blinking at different frequencies and different duty cycles. As a result, the lamp bead array can support various functions such as curve night contouring, linear induction, adverse weather warning, vehicle distance warning, and tracking.

The driving guidance sign 16 further includes a communication device and a control device, and the communication device is used to realize the communication between the driving guidance mark 16 and the controller 18 in a wireless and/or wired manner. The control device is connected in communication with the communication device, and is used to control the opening and closing, display color, luminous brightness, flickering frequency, duty cycle, etc. of the LED lamp beads based on the control instructions of the controller 18 received through the communication device, so as to achieve the corresponding luminescence Modes and effects, and then reflect different control modes for different weather conditions.

The vehicle detector 17 is used to detect the information of vehicles passing on the road. When the vehicle on the road passes through the vehicle detector section, the vehicle detector 17 detects the vehicle type, running speed, lane and other information, and sends the detection result to the controller 18. This information can be used as the basis for developing various control strategies.

In the preferred embodiment of the present invention, the vehicle detectors 17 can be arranged in a one-to-one correspondence with the driving guidance signs 16 , for example, installed on the upper columns 51 of the rotating columns 50 of the driving guidance signs 16 (as shown in FIG. 5 ). ). Those skilled in the art can understand that the vehicle detector 17 may also be installed in other positions suitable for detecting passing vehicles, and it does not have to be arranged in a one-to-one correspondence with the driving guidance signs 16 .

The vehicle detector 17 further includes a communication device and a control device, and the communication device is used to realize the communication between the vehicle detector 17 and the controller 18 in a wireless and/or wired manner, so as to transmit detection information and control instructions. The control device is connected in communication with the communication device to control the operation of the vehicle detector 17 based on the control command of the controller 18 received via the communication device. For example, when a certain vehicle detector 17 is not required for detection, it can be turned off.

The vehicle detector 17 may be an infrared vehicle detector, a microwave vehicle detector, or other types of vehicle detection equipment.

FIG. 5 shows a schematic structural diagram of the rotating column 50 of the adjustable curve driving safety guidance system 10 according to the preferred embodiment of the present invention. As shown in FIG. 5 , the rotary column 50 includes an upper column 51 and a lower column 52 . The lower column 52 is fixedly connected with the slider 12 through the bracket 23, and the upper column 51 is fixedly connected with the driving guidance mark 16. The upper column 51 can freely rotate relative to the lower column 52 around the common axis of the two, thereby driving the driving guidance mark 16 and the driving guidance mark 16. The vehicle detector 17 is rotated relative to the slider 12 within a range of 360°. The rotation of the upper column 51 relative to the lower column 52 can be realized by the rotation driving device 53 . The rotary drive device 53 can either be integrated with the lower column 52 , or can be disposed between the upper column 51 and the lower column 52 as an independent component.

The rotary drive device 53 further includes a drive motor and a communication device, and the communication device communicates with the controller 18 in a wireless and/or wired manner, so as to transmit the status information of the drive motor to the controller 18 and receive instructions and data from the controller 18 . In the preferred embodiment of the present invention, the driving motor is a stepping motor, which can rotate a corresponding number of steps according to the command of the controller 18 and stop at a specific position, thereby driving the upper column 51 to rotate relative to the lower column 52 and stop at a specific angle.

Based on the sliding of the slider 12 and the rotation of the rotating column 50 , the plurality of driving guidance signs 16 can be positioned at appropriate positions on the side of the curved road and facing the direction of the vehicle as required, so as to ensure that the road is wet and slippery under different road conditions and different conditions. Under the condition of high visibility, each driving guidance sign 16 can be arranged in the most suitable position and angle.

In the management and control strategies for different road surface wetness and visibility conditions, the number of driving guidance signs 16 required for the curve part of the road may also be different. When one or some of the driving guidance signs 16 are not required, the driving guidance signs 16 can be turned away from the driving direction by moving the corresponding slider 12 to the end of the curve, and at the same time driving the upper column 51 to rotate through the rotary driving device 53. When the power is turned off, the driving guidance function can be released (as shown by the gray driving guidance sign in Figure 1).

Controller 18 may be installed anywhere in system 10 as desired. FIG. 4 shows a schematic diagram of the connection relationship of each component of the adjustable curve driving safety guidance system 10 according to the preferred embodiment of the present invention. As shown in FIG. 4 , the slider 12 , the variable speed limit sign 13 , the driving guidance sign 16 , the rotating column 50 , the road surface condition detection device 14 , the visibility detection device 15 , and the vehicle detector 17 are all connected in communication with the controller 18 , It is thus possible to transmit detection data/results to the controller 18 and to receive control instructions and data from the controller 18 . Those skilled in the art can understand that the present invention does not involve improvements in the structure of the controller itself, the specific manner in which it realizes control or the control strategy it executes; the controller 18 may be based on existing general-purpose processors and/or special-purpose processors. Implemented by processors, for example, central processing units (CPUs), digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs), programmable logic circuits (PLDs), special purpose instruction processors (ASIP), Graphics Processing Unit (GPU), Physical Processing Unit (PPU), etc.

Each part of the adjustable curve driving safety guidance system 10 can be powered by the commercial power line, or can also be powered by other forms of power sources such as batteries, solar panels and the like.

From the above description of the preferred embodiments of the present invention, those skilled in the art can understand that in the adjustable curve driving safety guidance system of the present invention, the speed limit sign, the driving guidance sign, the position of the road surface condition detection device and the driving guidance The turning angle of the sign can be adjusted as needed, the speed limit value displayed by the speed limit sign, the opening and closing of the lamp beads on the driving guidance sign, the luminous color, luminous brightness, flashing frequency, duty cycle, etc. can be changed as needed. The road condition detection device and vehicle detector can collect real-time visibility data, road surface wetness data, and vehicle operation data. Therefore, the adjustable curve driving safety guidance system of the present invention provides convenient conditions for the implementation of various curve driving guidance control strategies under different road surface wetness and visibility conditions, and provides intelligent traffic in the road curve area. Control provides the hardware foundation.

Those skilled in the art should realize that the embodiments described herein are not illustrative and non-limiting, and the present invention is not limited to the above-mentioned specific embodiments.

Claims (10)

1. An adjustable curve driving safety guidance system, characterized in that, the adjustable curve driving safety guidance system comprises at least one sliding rail and at least one sliding block, The slide rail is parallel to the linear shape of the road and is arranged outside the road, the sliding block is arranged on the sliding rail, can move along the sliding rail and can be positioned on the sliding rail, A follower member is provided on the slider, and the follower member can move with the slider. 2 . The adjustable driving safety guidance system for curves according to claim 1 , wherein the sliding block further comprises a driving device and a positioning sensing device, and the driving device is used for driving the sliding block relative to the The sliding rail moves, and the positioning sensing device is used to determine the position of the sliding block relative to the sliding rail. 3. The adjustable curve driving safety guidance system according to claim 1 or 2, wherein the at least one slide rail comprises a first slide rail and a second slide rail, and the first slide rail is parallel to the The second sliding rail is arranged above the second sliding rail, the sliding block includes a first sliding block arranged on the first sliding rail and a second sliding block arranged on the second sliding rail. The follower part is connected with the first sliding block and the second sliding block at the same time. 4 . The adjustable curve driving safety guidance system according to claim 1 or 2 , wherein the follow-up component is a variable speed limit sign, and the variable speed limit sign can display a speed limit value. 5 . 5. The adjustable curve driving safety guidance system according to claim 1 or 2, wherein the follow-up component is a driving guidance sign, and the driving guidance sign comprises a sign board and a Indicates an array of lamp beads arranged in overlapping areas. 6 . The adjustable curve driving safety guidance system according to claim 5 , wherein each lamp bead in the lamp bead array is an LED lamp bead that can emit light in three colors of white, yellow and red. 7 . . 7. The adjustable curve driving safety guidance system according to claim 5, wherein the driving guidance sign is mounted on the slider through a rotating column, and the rotating column includes an upper column and a lower column , the lower column is connected with the slider, the upper column is connected with the driving guidance mark, and the upper column can freely rotate relative to the lower column around the common axis of the two. 8 . The adjustable curve driving safety guidance system according to claim 1 or 2 , wherein the follow-up component is a road surface condition detection device, and the road surface condition detection device can determine the wetness of the road surface. 9 . 9 . The adjustable curve driving safety guidance system according to claim 1 or 2 , wherein the adjustable curve driving safety guidance system further comprises a visibility detection device, and the visibility detection device can detect the visibility. 10. The adjustable curve driving safety guidance system according to claim 1 or 2, wherein the adjustable curve driving safety guidance system further comprises a vehicle detector capable of detecting traffic on the road vehicle information.

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