CN211547454U - Overspeed early warning and prompting traffic sign board based on visual persistence principle - Google Patents
Overspeed early warning and prompting traffic sign board based on visual persistence principle Download PDFInfo
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- CN211547454U CN211547454U CN201921703638.6U CN201921703638U CN211547454U CN 211547454 U CN211547454 U CN 211547454U CN 201921703638 U CN201921703638 U CN 201921703638U CN 211547454 U CN211547454 U CN 211547454U
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Abstract
The utility model discloses an overspeed early warning and prompting traffic sign board based on the visual persistence principle, which comprises a plurality of light and shade alternate lamp tubes and a control circuit, wherein the lamp tubes determine the space between the adjacent luminous lamp tubes according to a variable speed limit value, and the lamp tubes in the space are extinguished; when the vehicle passes the speeding traffic sign at a speed exceeding the variable speed limit, the driver observes the complete speeding traffic sign consisting of the luminous tubes. The utility model discloses utilize the principle of human eye persistence of vision, make the driver who hypervelocity travel can watch the speed limit information, remind the driver to overspeed. The drivers who do not overspeed can not observe the speed limit information, the traffic sign boards can not cause redundant information interference to the drivers who do not overspeed, and in addition, the traffic sign boards can adapt to different speed limit values according to the actual traffic flow running conditions of roads.
Description
Technical Field
The utility model relates to an overspeed early warning suggestion traffic sign tablet based on persistence of vision principle belongs to the traffic sign field.
Background
The speed limit is an important traffic management means for guaranteeing the driving safety. The current speed limit scheme mainly issues speed limit information to a driver in two ways: firstly, a traffic sign is arranged to inform a driver of a road speed limit value. At present, the existing traffic sign signage facilities issue road speed limit values for all drivers driving on roads, and in some specific road sections (such as road tunnels), the arrangement number of the speed limit signs is small, so that the warning strength for overspeed drivers is insufficient, and redundant information interference (particularly for a variable speed limit scheme) is easily generated for non-overspeed drivers by excessive speed limit signs. The second way is to issue speed limit and overspeed information to the driver through a navigation device mounted on the vehicle. This approach is greatly affected by GPS signals and the individual willingness of the driver to turn the device on.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model provides an overspeed early warning suggestion traffic sign tablet based on persistence of vision principle reminds the driver to overspeed when the speed of a motor vehicle surpasses variable speed limit value to can not produce redundant information to the driver that does not overspeed and disturb.
The technical scheme is as follows: the technical scheme adopted by the utility model is an overspeed early warning and prompting traffic sign board based on the visual persistence principle, which comprises a plurality of light and shade alternate lamp tubes and a control circuit, wherein the lamp tubes determine the space between the adjacent luminous lamp tubes according to the variable speed limit value, and the lamp tubes in the space are extinguished; when the vehicle is traveling at a speed exceeding the variable speed limit, the driver observes the speed limit information pattern composed of the luminous tubes.
The variable speed limit value is obtained by a speed limit optimization model.
The speed limit optimization model is used for solving according to the road traffic volume, the road occupancy and the average speed of the vehicle, which are acquired in real time, to obtain a variable speed limit value, and specifically:
when the traffic volume is less than or equal to 1600pcu/h, selecting a variable speed limit value according to the occupancy rate; if the occupancy is less than or equal to 15%, selecting 100km/h for the variable speed limit value; and if the occupancy is more than 15%, then the variable speed limit value needs to be selected according to the average speed, specifically:
i) the average speed is greater than 90km/h, and the variable speed limit value is selected to be 100 km/h;
ii) the average speed is more than 80km/h and less than or equal to 90km/h, and the variable speed limit value is selected to be 90 km/h;
iii) the average speed is less than or equal to 80km/h, and the variable speed limit value is selected to be 80 km/h;
when the traffic volume is larger than 1600pcu/h, selecting a variable speed limit value according to the average speed, specifically:
i) the average speed is greater than 90km/h, and the variable speed limit value is selected to be 100 km/h;
ii) the average speed is more than 80km/h and less than or equal to 90km/h, and the variable speed limit value is selected to be 90 km/h;
iii) the average speed is less than or equal to 80km/h, and the variable speed limit value is selected to be 80 km/h.
The lamp tube is an LED lamp tube.
The outermost layer of the LED lamp tube is a lampshade, a luminous body is arranged in the lampshade, the luminous body is positioned in the middle of the backlight surface in the LED lamp tube, and two sides of the luminous body are respectively provided with a reflecting sheet.
The reflector and the backlight surface of the lampshade form an included angle of 12 degrees.
The lamp tube changes the angle in the horizontal direction.
The distance between the adjacent luminous tubes is calculated by the following formula:
in the above formula, d is the distance between two light-emitting lamp tubes, and v is the speed limit value.
Has the advantages that: the invention utilizes the principle of human visual persistence to enable the overspeed driver to watch the speed limiting information to remind the driver of overspeed. The drivers who do not overspeed can not observe the speed limit information, the traffic sign boards can not cause redundant information interference to the drivers who do not overspeed, and in addition, the traffic sign boards can adapt to different speed limit values according to the actual traffic flow running conditions of roads. The invention is especially suitable for driving environments with weak light illumination, such as tunnels and the like.
Drawings
FIG. 1 is a cross-sectional view of the LED lamp of the present invention;
FIG. 2 is a schematic structural view of the overspeed traffic sign of the present invention;
FIG. 3 is a schematic diagram of a speed limit optimization model;
FIG. 4 is a schematic view showing the layout of the speeding traffic sign at a variable speed limit of 80 km/h.
Detailed Description
The invention will be further elucidated with reference to the drawings and specific embodiments, which are to be understood as illustrative only and not limiting the scope of the invention, and modifications of equivalent forms of the invention by a person skilled in the art after reading the present invention are intended to fall within the scope of the appended claims.
The embodiment comprises a plurality of LED lamp tubes and a control circuit. The sectional view of each LED lamp tube is shown in figure 1, the outermost layer of the LED lamp tube is a lampshade 1, and a luminous body 2 is arranged in the lampshade. The lamp tube is positioned in the middle of the backlight surface in the lamp tube, two sides of the lamp tube are respectively provided with a reflector 3, and the reflectors 3 and the backlight surface of the lampshade form an included angle of 12 degrees. The reflector 3 reflects the scattered light in the lamp housing 1 into parallel light.
As shown in fig. 2, all the LED tubes are sequentially and adjacently tiled to form a plane, and each LED tube can change its angle in the horizontal direction. The bottom of the LED lamp tube is provided with a control circuit 4 for controlling the lighting and extinguishing of the corresponding lamp tube. The real-time traffic flow state is obtained through the traffic management system, the variable speed limit value is solved according to the speed limit optimization model and is input into a preset program, and the control circuit 4 controls the lighting and the extinguishing of the lamp tube through the preset program.
The speed limit optimization model obtains a variable speed limit value by solving according to the road traffic volume, the road occupancy and the average speed of the vehicle, which are acquired in real time, and the specific solving process is shown in fig. 3.
When the traffic volume is less than or equal to 1600pcu/h, the variable speed limit value is selected according to the occupancy rate. If the occupancy is less than or equal to 15%, the variable speed limit value is selected to be 100 km/h. And if the occupancy is more than 15%, then the variable speed limit value needs to be selected according to the average speed, specifically:
i) the average speed is greater than 90km/h, and the variable speed limit value is selected to be 100 km/h;
ii) the average speed is more than 80km/h and less than or equal to 90km/h, and the variable speed limit value is selected to be 90 km/h;
iii) the average speed is less than or equal to 80km/h, and the variable speed limit value is selected to be 80 km/h.
When the traffic volume is larger than 1600pcu/h, selecting a variable speed limit value according to the average speed, specifically:
i) the average speed is greater than 90km/h, and the variable speed limit value is selected to be 100 km/h;
ii) the average speed is more than 80km/h and less than or equal to 90km/h, and the variable speed limit value is selected to be 90 km/h;
iii) the average speed is less than or equal to 80km/h, and the variable speed limit value is selected to be 80 km/h.
In fig. 2, part of the LED tubes are lit, but several LED tubes between adjacent lit LED tubes are still off. The distance between the adjacent luminous LED lamp tubes is calculated by the following formula:
in the above formula, d is the distance between two light-emitting tubes, and v is the speed limit value (m/s).
And finally, paving an overspeed traffic sign board according to the calculated distance between the two luminous lamp tubes.
Next, an example is given, the traffic sign board comprises 20 images, the road variable speed limit value is 80km/h, and the distance between adjacent light-emitting LED lamp tubes is 0.4m by using the above formula. According to the width of the LED lamp tube of 0.1m, 3 LED lamp tubes needing to be extinguished are obtained, and the specific laying mode is shown in figure 4. By utilizing the principle of 'persistence of vision', when the overspeed early warning prompt signboard enters the driving visual field and the vision range of a driver, the image of each luminous LED lamp tube is kept in the retina of the driver for a period of time, and a plurality of images finally form a continuous and complete speed-limiting traffic signboard image. And if the vehicle speed does not reach the speed limit value, the driver cannot observe the image of the speed limit information, so that the interference of redundant information is avoided.
Claims (8)
1. The utility model provides an overspeed early warning suggestion traffic sign board based on persistence of vision principle which characterized in that: the lamp tube is characterized by comprising a plurality of lamp tubes with alternate light and shade and a control circuit, wherein the lamp tubes determine the space between the adjacent luminous lamp tubes according to the variable speed limit value, and the lamp tubes in the space are extinguished; when the vehicle is traveling at a speed exceeding the variable speed limit, the driver observes the speed limit information pattern composed of the luminous tubes.
2. The overspeed warning prompting traffic sign board based on persistence of vision principle of claim 1, characterized in that: the variable speed limit value is obtained by a speed limit optimization model.
3. The overspeed warning prompting traffic sign board based on persistence of vision principle of claim 2, characterized in that: the speed limit optimization model is used for solving according to the road traffic volume, the road occupancy and the average speed of the vehicle, which are acquired in real time, to obtain a variable speed limit value, and specifically:
when the traffic volume is less than or equal to 1600pcu/h, selecting a variable speed limit value according to the occupancy rate; if the occupancy is less than or equal to 15%, selecting 100km/h for the variable speed limit value; and if the occupancy is more than 15%, then the variable speed limit value needs to be selected according to the average speed, specifically:
i) the average speed is greater than 90km/h, and the variable speed limit value is selected to be 100 km/h;
ii) the average speed is more than 80km/h and less than or equal to 90km/h, and the variable speed limit value is selected to be 90 km/h;
iii) the average speed is less than or equal to 80km/h, and the variable speed limit value is selected to be 80 km/h;
when the traffic volume is larger than 1600pcu/h, selecting a variable speed limit value according to the average speed, specifically:
i) the average speed is greater than 90km/h, and the variable speed limit value is selected to be 100 km/h;
ii) the average speed is more than 80km/h and less than or equal to 90km/h, and the variable speed limit value is selected to be 90 km/h;
iii) the average speed is less than or equal to 80km/h, and the variable speed limit value is selected to be 80 km/h.
4. The overspeed warning prompting traffic sign board based on persistence of vision principle of claim 1, characterized in that: the lamp tube is an LED lamp tube.
5. The overspeed warning prompting traffic sign board based on persistence of vision principle of claim 4, characterized in that: the outermost layer of the LED lamp tube is a lampshade (1), a luminous body (2) is arranged in the lampshade (1), the luminous body (2) is located in the middle of the backlight surface in the LED lamp tube, and two sides of the luminous body are respectively provided with a reflecting sheet (3).
6. The overspeed warning prompting traffic sign board based on persistence of vision principle of claim 5, characterized in that: the reflector (3) and the backlight surface of the lampshade (1) form an included angle of 12 degrees.
7. The overspeed warning prompting traffic sign board based on persistence of vision principle of claim 1, characterized in that: the lamp tube changes the angle in the horizontal direction.
8. The overspeed warning prompting traffic sign board based on persistence of vision principle of claim 1, characterized in that: the distance between the adjacent luminous tubes is calculated by the following formula:
in the above formula, d is the distance between two light-emitting lamp tubes, and v is the speed limit value.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921703638.6U CN211547454U (en) | 2019-10-12 | 2019-10-12 | Overspeed early warning and prompting traffic sign board based on visual persistence principle |
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| CN201921703638.6U CN211547454U (en) | 2019-10-12 | 2019-10-12 | Overspeed early warning and prompting traffic sign board based on visual persistence principle |
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| CN211547454U true CN211547454U (en) | 2020-09-22 |
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