CN112687117A - Variable speed limiting device suitable for highway section prone to water accumulation - Google Patents
Variable speed limiting device suitable for highway section prone to water accumulation Download PDFInfo
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- CN112687117A CN112687117A CN202110006564.6A CN202110006564A CN112687117A CN 112687117 A CN112687117 A CN 112687117A CN 202110006564 A CN202110006564 A CN 202110006564A CN 112687117 A CN112687117 A CN 112687117A
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Abstract
The invention relates to a variable speed limiting device suitable for a highway section easy to accumulate water, which comprises a water accumulation monitoring frame and a speed limiting display frame, wherein the speed limiting display frame is arranged on the speed limiting display frame; the device comprises a speed-limiting display frame, a first power supply unit, a second power supply unit, a display unit, a first power supply unit, a second power supply unit and a display unit, wherein the speed-limiting display frame is provided with the accumulated water monitoring unit, the first power supply unit supplies power to the accumulated water monitoring unit and the equipment box, the equipment box controls the operation of the accumulated water monitoring unit and sends a display instruction to the display unit, the second power supply unit supplies power to the display unit, and the display unit receives the display instruction sent by the equipment box and executes display; the ponding monitoring unit includes a plurality of ponding sensors, and each lane top corresponds there is a ponding sensor, and the display element includes a plurality of speed limit display panels, and each lane top corresponds there is a speed limit display panel. The road speed limit information can be adjusted in real time according to the real-time water accumulation depth of the road and different water accumulation depths on different lanes of the same road.
Description
Technical Field
The invention relates to the field of traffic guidance, in particular to a variable speed limiting device suitable for a highway section prone to water accumulation.
Background
At present, in the field of traffic in China, road ponding information is a key point of attention. The accurate road ponding information has important guiding effect on the construction and maintenance of roads and the organization of road traffic. Meanwhile, on the expressway, road ponding caused by rainy weather is also an important reason for traffic accidents. Road ponding can reduce highway's operating efficiency, causes the jam. Meanwhile, the road facilities are damaged due to long-time soaking, and property loss is caused. The road surface ponding also can make road surface frictional force reduce, if do not take certain traffic control measure, the vehicle that passes through is probably because speed is improper or electromechanical facility in the car meets the water and damages and takes place traffic accident with surrounding vehicle or facility, leads to the casualties.
However, the conventional setting of the speed limit value of the expressway still lacks consideration of road ponding, and is mainly embodied in the following aspects:
1. at present, the early warning of the highway to the ponding road section is mainly based on past experience, and specific ponding depth data are lacked.
2. The alarm information cannot be updated in time due to lack of the accumulated water depth information acquired in real time.
3. According to different section forms, the depth of accumulated water in each lane of the highway in rainy days is different. For example, in a turn, the depth of water accumulation in the inner lane is higher than that in the outer lane. At present, however, the setting of the speed limit value does not take the influence of the accumulated water into consideration, and does not take the influence of the section form on the depth of the accumulated water into consideration.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a variable speed limiting device suitable for a section of a high-speed road easy to accumulate water, which can adjust the speed limiting information of the road in real time according to the real-time water accumulation depth of the road and different water accumulation depths on different lanes of the same road, so that the actual speed limiting value can meet the requirement of the limiting value required by the actual water accumulation depth.
The purpose of the invention is realized by the following technical scheme:
a variable speed limiting device suitable for a highway section prone to water accumulation comprises a water accumulation monitoring frame and a speed limiting display frame, wherein the water accumulation monitoring frame is arranged at the position of the water accumulation section, and the speed limiting display frame is arranged in front of the water accumulation monitoring frame; the device comprises a speed-limiting display frame, a display unit, a first power supply unit, a second power supply unit, a display unit and a second power supply unit, wherein the ponding monitoring frame is provided with a ponding monitoring unit, the first power supply unit supplies power to the ponding monitoring unit and the equipment box, the equipment box controls the working of the ponding monitoring unit and sends a display instruction to the display unit, the second power supply unit supplies power to the display unit, and the display unit receives the display instruction sent by the equipment box and executes display; ponding monitoring unit includes a plurality of ponding sensors, the ponding sensor install in on the ponding monitoring frame, each lane top corresponds one the ponding sensor, the display element includes a plurality of speed limit display panels, the speed limit display panel install in on the speed limit display frame, each lane top corresponds one the speed limit display panel, every the speed limit value that the speed limit display panel shows corresponds with on the same lane the ponding degree of depth that the ponding sensor monitored corresponds.
In the technical scheme, the accumulated water monitoring unit further comprises a camera, the equipment box acquires road surface images at regular time through the camera, the current weather condition and the road surface are identified in real time through an image processing technology to determine whether accumulated water exists or not, and the equipment box controls the on-off of the accumulated water sensor through a road surface image identification result.
In the technical scheme, the accumulated water monitoring unit further comprises a rainfall sensor, the rainfall sensor is connected with the equipment box, the equipment box is controlled through a road surface image recognition result, the on-off of the rainfall sensor is controlled, and the display brightness of the display unit is controlled through a detection result of the rainfall sensor.
In the technical scheme, including wireless sending module, controller in the equipment box, the display element is including wireless receiving module and demonstration control module, the controller is used for control ponding monitoring unit's work and calculate according to the monitoring data and show the instruction, wireless sending module is used for showing the instruction and taking place extremely the display element, wireless receiving module is used for receiving and shows the instruction, show control module basis show instruction control the display element's display effect.
In the technical scheme, the equipment box further comprises a memory bank, a circuit self-checking module and a power management module, the memory bank is used for storing lane ponding monitoring data, the circuit self-checking module is used for detecting the running state of equipment and a circuit, and the power management module is used for managing the power supply of the first power supply unit.
In the above technical solution, the display unit further includes an alarm information display panel, and the alarm information display panel is located above the speed limit display panel.
In the above technical solution, the display instruction sent by the equipment box to the display unit includes a real-time speed limit value, the speed limit value on each lane is determined according to the depth of the accumulated water on the lane, and the speed limit value should satisfy the following formula:
in the formula: v represents a speed limit value; t represents the reaction time, and 2.5s is taken;
representing road adhesion coefficients under different ponding depth conditions; i represents a road longitudinal gradient; l isFront vehicle、LSecureRepresenting the distance between the front vehicles and the safe distance, and taking 5 m; l isvIndicating suggested stopping sights at different water depths.
In the technical scheme, the distance S between the speed-limiting display frame and the accumulated water monitoring frame is determined according to the following formula:
in the formula: n represents the number of lanes; l represents the distance required to change lanes once (about 120m assuming an 85% vehicle speed value); a is deceleration, v1The speed limit value before adjustment; v. of2The adjusted speed limit value is obtained; t is the decision time.
In the technical scheme, the display unit keeps an inclination angle of 0-10 degrees.
The invention has the following beneficial effects: the invention provides a variable speed limiting device suitable for highway sections prone to water accumulation, which can display a speed limiting value and alarm information through a speed limiting display frame, can give speed limiting instructions to vehicles, improves the safety of roads and reduces the occurrence of traffic accidents. The speed-limiting display frame is arranged in front of the ponding road section, can make ponding speed-limiting indication for the vehicle in advance and reserve a distance for the vehicle to decelerate in advance; different speed limit display boards are respectively arranged for each lane, the speed limit value shown by each speed limit display board is calculated according to the real-time accumulated water depth on the lane changing, namely, the scheme can dynamically adjust the speed limit value of the corresponding lane and the display content and the display effect of the alarm information according to the difference of the accumulated water volume of each lane, and provides the indication of the limit value required by the actual accumulated water depth for the vehicle. In addition, the accumulated water depth and accumulated water change trend data of highway sections prone to accumulated water can be obtained through the accumulated water monitoring frame, and data support is provided for design upgrading and the like of the highway.
Drawings
FIG. 1 is a schematic diagram of the variable speed-limiting device applicable to a section of highway where water is easy to accumulate according to the invention when applied;
FIG. 2 is a schematic structural view of the water accumulation monitoring stand according to the present invention;
fig. 3 is a schematic structural view of a speed limit display stand according to the present invention.
The specific structure in the figure illustrates that: 1 ponding monitoring frame, 21 ponding sensors, 22 cameras, 23 rainfall sensors, 3 equipment boxes, 4 speed limit display frames, 51 speed limit display boards and 52 alarm information display boards.
Detailed Description
The present invention will be described in further detail with reference to the following examples, which are given in the accompanying drawings.
Referring to fig. 1-3, the variable speed limiting device suitable for the highway section prone to water accumulation comprises a water accumulation monitoring frame 1 and a speed limiting display frame 4, wherein the water accumulation monitoring frame 1 is arranged at the position of the water accumulation section, and the speed limiting display frame 4 is arranged in front of the water accumulation monitoring frame 1; the device comprises a ponding monitoring frame 1, a speed limiting display frame 4, a display unit, a first power supply unit, a second power supply unit, a first power supply unit and a device box 3, wherein the ponding monitoring frame 1 is provided with the ponding monitoring unit, the first power supply unit supplies power for the ponding monitoring unit and the device box 3, the device box 3 controls the working of the ponding monitoring unit and sends a display instruction to the display unit, the second power supply unit supplies power for the display unit, and the display unit receives the display instruction sent by the device box 3 and executes display; ponding monitoring unit includes a plurality of ponding sensors 21, ponding sensor 21 install in on the ponding monitoring frame 1, each lane top corresponds one ponding sensor 21, the display element includes a plurality of speed limit display panels 51, speed limit display panel 51 install in on the speed limit display frame 4, each lane top corresponds one speed limit display panel 51, every the speed limit value that speed limit display panel 51 shows and same lane on the ponding degree of depth that ponding sensor 21 monitored corresponds. The accumulated water sensor 21 is a non-contact liquid level sensor, and can rotate an ultrasonic liquid level transmitter or a radar liquid level transmitter, so that the accumulated water depth can be monitored in an air space above a road.
That is, in this scheme, the main technical problem who solves is that the early warning of prior art's highway to ponding highway section is mainly based on past experience, can not adjust the speed limit value according to real-time ponding degree of depth real-time, and the speed limit is low excessively, can influence normal current efficiency when normal road conditions, and the speed limit is too high, and when ponding is darker, has certain traffic hidden danger again to the vehicle of passing. From this, through having set up ponding monitoring frame 1 and speed limit display frame 4 in this scheme, ponding monitoring frame 1 is installed in the top of easy ponding highway section, can the ponding degree of depth of real-time supervision ponding highway section, and ponding highway section the place ahead certain distance is located to speed limit display frame 4, can make the ponding speed limit instruction for the vehicle in advance. The speed limit value of the display indicator board 51 on one lane corresponds to the corresponding water accumulation depth on the lane, and is specifically calculated by the water accumulation depth monitored by the water accumulation sensor 21 on the lane. Therefore, by the scheme, even if the accumulated water depth of the section easy to accumulate water is possibly different in different weather and different time periods, the scheme can monitor the real-time accumulated water depth and make speed-limiting indication according to the actual accumulated water depth; according to the difference of section form, the slope of road also is different, and the ponding volume of every lane also is different, consequently, this scheme is through carrying out independent monitoring speed limit to each lane respectively, can satisfy the different speed limit requirements of lane that each ponding degree of depth is different.
In the technical scheme, the ponding monitoring unit still includes camera 22, equipment box 3 passes through camera 22 regularly acquires the road surface image, utilizes image processing technique real-time identification current weather condition and road surface whether have ponding, equipment box 3 passes through road surface image recognition result control ponding sensor 21's break-make. Specifically, whether it rains and whether the road surface has ponding can be identified through the picture that camera 22 was shot, under the circumstances that the road surface does not have ponding in fine day, equipment box 3 can automatic control ponding sensor 21 and get into the dormancy state, just opens ponding sensor 21 automatically when discerning to this reaches energy saving and emission reduction's effect, can prolong ponding sensor 21's life simultaneously.
In the above technical scheme, the ponding monitoring unit further includes a rainfall sensor 23, the rainfall sensor 23 with the equipment box 3 is connected, the equipment box 3 is controlled through the road surface image recognition result the break-make of rainfall sensor 23, through the detection result control of rainfall sensor 23 the display brightness of display element. Similarly, in a sunny state, the equipment box 3 automatically controls the rainfall sensor 23 to enter a dormant state, and is turned on when raining. Because when rainfall was big, the rainy day can influence the visible distance, influences the driver on the vehicle promptly and observes the content that shows on the display element, and at this moment, 3 display element of equipment box send the instruction that improves and show luminance, receives control command back display element increase and shows luminance to this reinforcing speed limit light's penetrability guarantees that the driver can acquire the speed limit information, ensures driving safety. In sunny days or days with low rainfall, the display unit does not need high-brightness display, and therefore the energy-saving effect is achieved.
Among the above-mentioned technical scheme, including wireless sending module, controller in the equipment box 3, the display element is including wireless receiving module and demonstration control module, the controller is used for control ponding monitoring unit's work and calculate according to the monitoring data and show the instruction, wireless sending module is used for taking place to show the instruction the display element, wireless receiving module is used for receiving and shows the instruction, show control module basis show instruction control the display effect of display element. The display effect of the display unit is controlled in a wireless transmission mode, laying of transmission wires is saved, and installation and maintenance are facilitated.
In the technical scheme, still including memory bank, circuit self-checking module and power management module in the equipment box 3, the memory bank is used for preserving lane ponding monitoring data, circuit self-checking module is used for the running state of check out test set and circuit, power management module is used for managing first power supply unit's power supply. The memory bank can be used for storing accumulated water of a road, providing accumulated water depth and accumulated water change trend data of an easy accumulated water section of the highway, and providing data support for design upgrading and the like of the highway. The circuit self-checking module and the power management module are arranged, so that self-checking of the circuit and management of the power can be realized, and normal operation of the equipment is guaranteed.
In the above technical solution, the display unit further includes an alarm information display panel 52, and the alarm information display panel 52 is located above the speed limit display panel 51. An alert information display panel 52 may be provided for displaying an alert message to alert passing vehicles of safety.
In the above technical solution, the display instruction sent by the equipment box 3 to the display unit includes a real-time speed limit value, the speed limit value on each lane is determined according to the depth of the accumulated water on the lane, and the speed limit value should satisfy the following formula:
in the formula: v represents a speed limit value; t represents the reaction time, and 2.5s is taken;
representing road adhesion coefficients under different ponding depth conditions; i represents a road longitudinal gradient; l isFront vehicle、LSecureRepresenting the distance between the front vehicles and the safe distance, and taking 5 m; l isvIndicating suggested stopping sights at different water depths.
In the technical scheme, the distance S between the speed-limiting display frame and the accumulated water monitoring frame is determined according to the following formula:
in the formula: n represents the number of lanes; l represents the distance required to change lanes once (about 120m assuming an 85% vehicle speed value); a is deceleration, v1The speed limit value before adjustment; v. of2The adjusted speed limit value is obtained; t is the decision time.
In the technical scheme, the display unit keeps an inclination angle of 0-10 degrees.
The above description is only a preferred embodiment of the present invention, but not intended to limit the scope of the invention, and all simple equivalent changes and modifications made in the claims and the description of the invention are within the scope of the invention.
Claims (9)
1. The utility model provides a variable speed limiting device suitable for easy ponding highway section of highway which characterized in that: the device comprises an accumulated water monitoring frame and a speed-limiting display frame, wherein the accumulated water monitoring frame is arranged at the position of an accumulated water section, and the speed-limiting display frame is arranged in front of the accumulated water monitoring frame; the device comprises a speed-limiting display frame, a display unit, a first power supply unit, a second power supply unit, a display unit and a second power supply unit, wherein the ponding monitoring frame is provided with a ponding monitoring unit, the first power supply unit supplies power to the ponding monitoring unit and the equipment box, the equipment box controls the working of the ponding monitoring unit and sends a display instruction to the display unit, the second power supply unit supplies power to the display unit, and the display unit receives the display instruction sent by the equipment box and executes display; ponding monitoring unit includes a plurality of ponding sensors, the ponding sensor install in on the ponding monitoring frame, each lane top corresponds one the ponding sensor, the display element includes a plurality of speed limit display panels, the speed limit display panel install in on the speed limit display frame, each lane top corresponds one the speed limit display panel, every the speed limit value that the speed limit display panel shows corresponds with on the same lane the ponding degree of depth that the ponding sensor monitored corresponds.
2. The variable speed-limiting device suitable for the highway section prone to water accumulation according to claim 1, characterized in that: the ponding monitoring unit still includes the camera, the equipment box passes through the camera regularly acquires the road surface image, utilizes image processing technique real-time identification current weather condition and road surface whether have ponding, the equipment box passes through road surface image recognition result control the break-make of ponding sensor.
3. The variable speed-limiting device suitable for the highway section prone to water accumulation according to claim 2, characterized in that: the ponding monitoring unit still includes the rainfall sensor, the rainfall sensor with the equipment box is connected, the equipment box passes through road surface image recognition result control the break-make of rainfall sensor, through the testing result control of rainfall sensor display element's demonstration luminance.
4. The variable speed-limiting device suitable for the highway section prone to water accumulation according to claim 1, characterized in that: including wireless sending module, controller in the equipment box, the display element is including wireless receiving module and demonstration control module, the controller is used for control ponding monitoring unit's work and calculate according to the monitoring data and show the instruction, wireless sending module is used for taking place to show the instruction the display element, wireless receiving module is used for receiving the demonstration instruction, show control module basis show instruction control the display element's display effect.
5. The variable speed-limiting device suitable for the highway section prone to water accumulation according to claim 4, characterized in that: still including memory strip, circuit self-checking module and power management module in the equipment box, the memory strip is used for preserving lane ponding monitoring data, circuit self-checking module is used for the running state of check out test set and circuit, power management module is used for managing first power supply unit's power supply.
6. The variable speed-limiting device suitable for the highway section prone to water accumulation according to claim 1, characterized in that: the display unit also comprises an alarm information display board which is positioned above the speed limit display board.
7. The variable speed-limiting device suitable for the highway section prone to water accumulation according to claim 1, characterized in that: the display instruction sent by the equipment box to the display unit comprises real-time speed limit values, the speed limit value on each lane is determined according to the depth of accumulated water on the lane, and the speed limit values meet the following formula:
in the formula: v represents a speed limit value; t represents the reaction time, and 2.5s is taken;
representing road adhesion coefficients under different ponding depth conditions; i represents a road longitudinal gradient; l isFront vehicle、LSecureRepresenting the distance between the front vehicles and the safe distance, and taking 5 m; l isvIndicating suggested stopping sights at different water depths.
8. The variable speed-limiting device suitable for the highway section prone to water accumulation according to claim 1, characterized in that: the distance S between the speed-limiting display frame and the ponding monitoring frame is determined according to the following formula:
in the formula: n represents the number of lanes; l represents the distance required to change lanes once (about 120m assuming an 85% vehicle speed value); a is deceleration, v1The speed limit value before adjustment; v. of2The adjusted speed limit value is obtained; t is the decision time.
9. The variable speed-limiting device suitable for the highway section prone to water accumulation according to claim 1, characterized in that: the display unit maintains a tilt angle of 0-10 deg..
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| CN202110006564.6A CN112687117A (en) | 2021-01-05 | 2021-01-05 | Variable speed limiting device suitable for highway section prone to water accumulation |
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| CN202110006564.6A CN112687117A (en) | 2021-01-05 | 2021-01-05 | Variable speed limiting device suitable for highway section prone to water accumulation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112863130A (en) * | 2021-01-06 | 2021-05-28 | 河南理工大学 | Urban traffic rainstorm emergency early warning system and early warning method |
| CN113256971A (en) * | 2021-05-07 | 2021-08-13 | 公安部第三研究所 | Highway sealing control system and method |
| CN115273508A (en) * | 2022-06-17 | 2022-11-01 | 智道网联科技(北京)有限公司 | Vehicle travel guidance method, device, electronic device, and storage medium |
-
2021
- 2021-01-05 CN CN202110006564.6A patent/CN112687117A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112863130A (en) * | 2021-01-06 | 2021-05-28 | 河南理工大学 | Urban traffic rainstorm emergency early warning system and early warning method |
| CN113256971A (en) * | 2021-05-07 | 2021-08-13 | 公安部第三研究所 | Highway sealing control system and method |
| CN115273508A (en) * | 2022-06-17 | 2022-11-01 | 智道网联科技(北京)有限公司 | Vehicle travel guidance method, device, electronic device, and storage medium |
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