CN111341126A - Road surface signal indicating system suitable for signal intersection - Google Patents

Road surface signal indicating system suitable for signal intersection Download PDF

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Publication number
CN111341126A
CN111341126A CN202010132883.7A CN202010132883A CN111341126A CN 111341126 A CN111341126 A CN 111341126A CN 202010132883 A CN202010132883 A CN 202010132883A CN 111341126 A CN111341126 A CN 111341126A
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led
vehicle
control system
indicating
lane
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漆巍巍
罗淞文
沈斌
都昱辰
贺科智
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South China University of Technology SCUT
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South China University of Technology SCUT
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/07—Controlling traffic signals
    • G08G1/081—Plural intersections under common control
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/095—Traffic lights

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  • General Physics & Mathematics (AREA)
  • Road Signs Or Road Markings (AREA)
  • Traffic Control Systems (AREA)

Abstract

The invention discloses a road signal indicating system suitable for signal intersections, which comprises a power supply device, a control system and an LED indicating device, wherein the power supply device is connected with the control system through a power supply line; the power supply device comprises a solar cell panel and a storage battery which are arranged outside the road, the solar cell panel is connected with the storage battery, and the storage battery is connected with the control system and the LED indicating device; the control system and the power supply device are arranged in the integrated box, and the control system is connected with the LED indicating device by converting the set signal phases of the lanes in different directions into specific indicating periods and allowed vehicle length information; the LED indicating device displays the information converted by the control system through indicating lamps with different colors, thereby achieving the effect of reminding and indicating. The invention has simple structure and strong practicability, can give effective indication signals to a driver under the condition that the rear vehicle is shielded from the view by the front large-scale vehicle, and avoids traffic accidents caused by untimely braking.

Description

Road surface signal indicating system suitable for signal intersection
Technical Field
The invention relates to the technical field of road traffic facilities, in particular to a road surface signal indicating system suitable for a signal intersection.
Background
At present, motor vehicles often meet a plurality of signal intersections when driving on urban roads, but because social vehicle types are mixed, the length, the height and the width of a vehicle body are different, partial vehicles often can be caused to be shielded by front vehicles and cannot know signal lamp information positioned in the front in the air. This occurrence may prevent the driver from activating and braking in a timely manner. The efficiency of the motorcade passing through the signal intersection is reduced if the motorcade passes through the signal intersection, and traffic accidents are caused if the motorcade does not brake in time. No better method for solving the problems exists under the prior art.
Some current innovative technologies still have the following disadvantages:
1. an innovative stereo signal lamp (publication No. CN208027578U) extends a signal or the like to a signal pole through an LED lamp chain, but is also positioned in front of the driver, so that the blocked vehicle is also difficult to observe. The signal lamp can only prompt information in one direction, so that the effect is not great.
2. Although the other signal lamp (publication number: CN206849275U) based on holographic projection can make the rear vehicle more easily know the signal condition, the projection consumes a large amount of electric power, so that the signal lamp is high in price, easy to be influenced by the environment in use, and cannot solve the problem well.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention provides a road signal indicating system suitable for signal intersections, which provides timely, effective and understandable indicating signals for vehicles on urban roads whose visual fields are affected by the large vehicles ahead.
The invention is realized by at least one of the following technical schemes.
A road signal indicating system suitable for signal crossroads comprises a power supply device, a control system and an LED indicating device; the power supply device comprises a solar cell panel and a storage battery which are arranged outside the road, the solar cell panel is connected with the storage battery, and the storage battery is connected with the control system and the LED indicating device; the control system and the storage battery are arranged in the integrated box; the control system is connected with the LED indicating device and provides indicating information for the LED indicating device; the LED indicating device comprises indicating lamps with different colors, and information converted by the control system is displayed through the indicating lamps with different colors.
Furthermore, the power supply device allows direct access to the power supply system of the original signal lamp, and provides power for the control system and the LED indicating device.
Furthermore, the LED indicating device comprises a plurality of LED lamp groups, and the LED lamp groups are connected in parallel to ensure that the fault of a single LED lamp group does not influence the overall indicating effect.
Furthermore, a plurality of LED banks are inlayed respectively in different lane markings to the guarantee does not disturb the vehicle lane change.
Further, the LED lamp group comprises a plurality of indicator lamps, and the indicator lamps have three colors of red, green and yellow.
Further, the indicating lamps of the LED lamp group are arranged at equal intervals, so that the total length of the passing vehicle in one period can be conveniently indicated.
Furthermore, the integration box is arranged outside the road or in the original signal light pile.
Further, the control method of the control system comprises the following steps:
1. when a green light of a certain lane is turned on, the control system calculates the length of the vehicles allowed to leave the stop line by the current green light according to the phase time of the green light and the running speed of the vehicles at the intersection. Specifically, according to the parking line law, the traffic capacity of a straight lane in a green light in one phase period is:
Figure BDA0002396274280000021
of formula (II) to'GreenIs the phase green time(s); t is tDecrease in the thickness of the steelThe lost time in the green light time comprises starting time and acceleration time; t is tWorkshopThe average interval time of the two front and rear vehicles passing the stop line in succession is shown.
The traffic capacity of a left-turn lane is as follows:
Figure BDA0002396274280000022
wherein, tLeft side ofThe average interval time of two vehicles turning front and back and right successively passing through the stop line is shown. t is tYellow greenIs a yellow-green light time, v, dedicated to passing left-turn cars within a cycleLeft side ofIs the passing speed (m/s) of the left-turn vehicle in one period, and a' is the average acceleration (m/s) of the left-turn vehicle2)
The traffic capacity of one lane when the vehicle runs in a straight and left mixed mode:
Figure BDA0002396274280000023
wherein N isStraight barThe traffic capacity of a straight lane; n isLeft side ofIs the proportion of the left-turning vehicle quantity, and K is the reduction coefficient.
The traffic capacity of one lane when the vehicle runs in a straight and right mixed mode:
Figure BDA0002396274280000024
wherein n isRight sideIs the proportion of the right-turn vehicle quantity.
The values of the parameters in the formula have recommended ranges, and can be modified correspondingly according to actual conditions. The assumption is that N vehicles can be moved in a green phase under the condition of fixed timing, and the average vehicle length and the safe vehicle head distance of the signalized intersection are taken, so that N (m) vehicles can be allowed to pass through the green phase, the front N LED lamps emit green indicating light, and the rear LED emits red indicating light, therefore, a driver can know whether the current signal lamp is green or not and whether the current green lamp time can pass through the stop line or not only by observing whether the green lamp range of the lower left side line of the visual field covers the driver through a rearview mirror or a windshield window. Thus, the covered vehicle can be started quickly, and delay generated when the covered vehicle is started with the traffic flow is reduced. And the uncovered vehicle can safely drive to the next parking position without urgent following the vehicle, thereby reducing the occurrence of accidents.
2. When a red light of a certain lane is turned on, the LED lamp group of the lane is completely red, so that even if a driver of a rear vehicle cannot observe a front signal lamp, the speed of the vehicle can be reduced according to the prompt of a road signal, and the rear-end collision caused by sudden braking of a front vehicle is prevented.
3. During the period of the yellow light (between red and green conversion), the LED light group is totally changed into yellow, and the purposes of reminding a driver of paying attention to starting and braking can be achieved.
From above, this road surface signal indicating system can both guarantee under many circumstances that the rear vehicle is sheltered from the effectual signal of instructing of driver under the condition in the field of vision by the oversize vehicle in the place ahead, lets the driver in time start, brake, greatly improves the efficiency that the vehicle passed through the signal crossing to avoid by the untimely traffic accident that leads to of braking, prevent loss of property and casualties's emergence. In addition, this road surface signal indication system relies on the LED banks basically to instruct, practices thrift a large amount of power costs, and the device life-span is longer, and the partial lamp can't the during operation not influence road surface signal indication system greatly in the banks.
The LED indicating device is an LED lamp group laid on the ground mark line on the left side of each lane in front of a signal intersection, and the LED lamp groups are arranged at equal intervals and can emit red, green and yellow prompting lights. It produces corresponding light according to the indication period produced by the control system and the allowed vehicle length information, thereby indicating the driver to start and brake.
Compared with the prior art, the invention has the beneficial effects that:
1. ensuring that vehicles behind cannot be shielded by a large vehicle in front and cannot observe traffic signals in vehicles queued at the entrance of a signal intersection;
2. the information provided is various, and whether the automobiles at different positions should be started in advance can be informed;
3. the cost is low, and the LED lamp group is used for signal display;
4. the signal lamp group is embedded underground, and the influence on road traffic is small.
Drawings
Fig. 1 is a road surface signal indicating system suitable for signal intersections provided by the present embodiment;
FIG. 2 is a front view of the LED indicating apparatus in the present embodiment;
FIG. 3 is a top view of the LED indicating device in this embodiment;
the system comprises a solar cell panel, an integrated box, a solar cell panel, a 3-LED indicating device, 4-tempered high-transparency glass, 5-LED indicating lamps, 6-original pavement markings and 7-pavement layers.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited to these examples.
As shown in FIG. 1, a road signal indicating system suitable for signal intersections comprises a power supply device, a control system and an LED indicating device.
The power supply device comprises a solar cell panel 2 and a storage battery, wherein the solar cell panel 2 and the storage battery are arranged outside a road, the solar cell panel 2 is connected with the storage battery, and the storage battery is connected with the control system and the LED indicating device 3; the control system and the storage battery are arranged in the integration box 1, and the solar panel 2 is arranged on the upper surface of the integration box 1; the control system is connected with the LED indicating device 3 and provides indicating information for the LED indicating device 3; the LED indicating device 3 displays the information converted by the control system through indicating lamps with different colors. The integration box 1 is arranged outside the road or in the original signal lamp pile.
The power supply device can be directly connected to the power supply system of the original signal lamp to provide power for the control system and the LED indicating device 3.
Fig. 2 shows, LED indicating device 3 includes that the high glass 4 of passing through of tempering and a plurality of LED banks 5, and the high glass 4 of passing through of tempering sets up on every LED banks surface of group, can protect the LED pilot lamp not damaged, and the penetrating glass that pilot lamp light can be better simultaneously. The LED indicator is embedded in the road markings 6 and below the road surface 7 so as not to impede the lane change of the vehicle. The road surface layer 7 is the ground.
The LED lamp sets are connected in parallel, so that the fault of a single LED lamp set is ensured not to influence the overall indicating effect.
As shown in fig. 3, the LED lamp set includes a plurality of indicator lamps, and the LED lamp set is put at the equidistance, and the interval can be set to 1m, can send out the suggestion light of three kinds of colours red, green and yellow. It produces corresponding light according to the indication period produced by the control system and the allowed vehicle length information, thereby indicating the driver to start and brake.
The control method of the control system comprises the following steps:
1. when a green light of a certain lane is turned on, the control system calculates the length of the vehicles allowed to leave the stop line by the current green light according to the phase time of the green light and the running speed of the vehicles at the intersection. Specifically, according to the parking line law, the traffic capacity of a straight lane in a green light in one phase period is:
Figure BDA0002396274280000041
of formula (II) to'GreenIs the phase green time(s); t is tDecrease in the thickness of the steelThe lost time in the green light time comprises starting time and acceleration time; t is tWorkshopThe average interval time of the two front and rear vehicles passing the stop line in succession is shown.
The traffic capacity of a left-turn lane is as follows:
Figure BDA0002396274280000042
wherein, tLeft side ofThe average interval time of two vehicles turning front and back and right successively passing through the stop line is shown. t is tYellow greenIs a yellow-green light time, v, dedicated to passing left-turn cars within a cycleLeft side ofIs the passing speed (m/s) of the left-turn vehicle in one period, and a' is the average acceleration (m/s) of the left-turn vehicle2)
The traffic capacity of one lane when the vehicle runs in a straight and left mixed mode:
Figure BDA0002396274280000051
wherein N isStraight barThe traffic capacity of a straight lane; n isLeft side ofIs the proportion of the left-turning vehicle quantity, and K is the reduction coefficient.
The traffic capacity of one lane when the vehicle runs in a straight and right mixed mode:
Figure BDA0002396274280000052
wherein n isRight sideIs the proportion of the right-turn vehicle quantity.
The values of the parameters in the formula have recommended ranges, and can be modified correspondingly according to actual conditions. The assumption is that N vehicles can be moved in a green phase under the condition of fixed timing, and the average vehicle length and the safe vehicle head distance of the signalized intersection are taken, so that N (m) vehicles can be allowed to pass through the green phase, the front N LED lamps emit green indicating light, and the rear LED emits red indicating light, therefore, a driver can know whether the current signal lamp is green or not and whether the current green lamp time can pass through the stop line or not only by observing whether the green lamp range of the lower left side line of the visual field covers the driver through a rearview mirror or a windshield window. Thus, the covered vehicle can be started quickly, and delay generated when the covered vehicle is started with the traffic flow is reduced. And the uncovered vehicle can safely drive to the next parking position without urgent following the vehicle, thereby reducing the occurrence of accidents.
4. When a red light of a certain lane is turned on, the LED lamp group of the lane is completely red, so that even if a driver of a rear vehicle cannot observe a front signal lamp, the speed of the vehicle can be reduced according to the prompt of a road signal, and the rear-end collision caused by sudden braking of a front vehicle is prevented.
5. During the period of the yellow light (between red and green conversion), the LED light group is totally changed into yellow, and the purposes of reminding a driver of paying attention to starting and braking can be achieved.
The positions of all devices of the system must be reasonably arranged. As shown in fig. 2, the recommended values of the label lengths are as follows: the groove depth L1 required for placing the LED lamp set is 5-10 cm, and is judged by the height of the LED indicator lamp; the depth L2 of the groove for placing the toughened high-transparency glass is 5 cm; l3 is the thickness of the standard line of the original pavement, the standard line of various materials requires different thicknesses according to the national standard 'quality requirement and detection method of road traffic marking' (GB/T16311), the thickness specification of the generally adopted hot melting type requires 0.7-2.5mm, and the actually adopted thickness specification is 1.8mm or 2.0 mm; l4 is the diameter of the tempered high-transparency glass, is smaller than the width of the pavement marking, and is 10 cm; l5 is the distance between the high-transparency glass and the edge of the pavement marking, and is determined by the width of the pavement marking and L4; l6 is the lane width, and according to the national standard of urban road intersection planning Specification (GB 50647 plus 2011), the width of each motor lane at an intersection entrance road is not less than 3.0 m; l7 is the diameter of a road surface groove for placing an LED indicator lamp, and is less than L4, preferably 5-8 cm; l8 is the distance between the indicator lights, and for the convenience of displaying the length of the permitted traffic, the number of whole meters should be taken, and the recommended value is 1 m.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.

Claims (8)

1. The utility model provides a road surface signal indicating system suitable for signal intersection which characterized in that: comprises a power supply device, a control system and an LED indicating device (3); the power supply device comprises a solar cell panel (2) and a storage battery, wherein the solar cell panel (2) and the storage battery are arranged outside a road, the solar cell panel (2) is connected with the storage battery, and the storage battery is connected with the control system and the LED indicating device (3); the control system and the storage battery are arranged in the integrated box (1); the control system is connected with the LED indicating device (3) and provides indicating information for the LED indicating device (3); the LED indicating device (3) comprises indicating lamps with different colors, and information converted by the control system is displayed through the indicating lamps with different colors.
2. The road surface signal indicating system according to claim 1, characterized in that the power supply device allows direct access to the power supply system of the existing signal lamp, providing power for the control system and the LED indicating device (3).
3. The road surface signal indicating system according to claim 1, characterized in that the LED indicating device (3) comprises a plurality of LED lamp sets, and the LED lamp sets are connected in parallel with each other to ensure that the fault of a single LED lamp set does not affect the overall indicating effect.
4. The road signal indicating system of claim 3, wherein the plurality of LED light sets are respectively embedded in different lane markings to ensure that the lane change of the vehicle is not disturbed.
5. The pavement signaling system of claim 4 wherein said LED light set includes a plurality of indicator lights having three colors, red, green and yellow.
6. The road surface signal indicating system of claim 5, wherein the indicator lights of the LED light set are equidistantly arranged so as to facilitate indication of the total length of vehicles passing through in one cycle.
7. A pavement signalling system according to claim 1, characterized in that the integration box (1) is placed off-road or in an existing beacon.
8. The road surface signal indicating system according to claim 1, characterized in that the control method of the control system comprises the steps of:
1) when a green light of a certain lane is turned on, calculating the length of the vehicles allowed to leave the stop line by the current green light according to the green light phase time and the running speed of the vehicles at the intersection, specifically, according to the stop line method, the traffic capacity of a straight lane in the green light in a phase period is as follows:
Figure FDA0002396274270000011
of formula (II) to'GreenIs the phase green time; t is tDecrease in the thickness of the steelThe lost time in the green light time comprises starting time and acceleration time; t is tWorkshopThe average interval time of the two front and rear vehicles passing the stop line in succession;
the traffic capacity of a left-turn lane is as follows:
Figure FDA0002396274270000021
wherein, tLeft side ofThe average interval time of two vehicles turning front and back and right successively passing through the stop line; t is tYellow greenIs a yellow-green light time dedicated to passing left-turn cars within one cycle; v. ofLeft side ofThe passing speed of the left-hand vehicle in one period; a' is the average acceleration of the left-turning vehicle;
the traffic capacity of one lane when the vehicle runs in a straight and left mixed mode:
Figure FDA0002396274270000022
wherein N isStraight barThe traffic capacity of a straight lane; n isLeft side ofIs the proportion of the left-turning vehicle quantity; k is a reduction coefficient;
the traffic capacity of one lane when the vehicle runs in a straight and right mixed mode:
Figure FDA0002396274270000023
wherein n isRight sideIs the proportion of the right-turn vehicle amount;
2) when a red light of a certain lane is turned on, the LED lamp group of the lane is completely red, and even if a driver of a rear vehicle cannot observe a front signal lamp, the speed of the vehicle can be reduced according to a road signal prompt, so that the rear-end collision caused by sudden braking of a front vehicle is prevented;
3) and during the yellow light-red-green conversion period, the LED lamp group is totally changed into yellow, so that the purpose of reminding a driver of paying attention to starting and braking is achieved.
CN202010132883.7A 2020-02-29 2020-02-29 Road surface signal indicating system suitable for signal intersection Pending CN111341126A (en)

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CN113393706A (en) * 2021-07-14 2021-09-14 云度新能源汽车有限公司 Automatic driving blind area early warning system and method based on intelligent traffic crossroad
CN113793519A (en) * 2021-08-25 2021-12-14 武汉理工大学 Intersection guide lane line lighting system
CN115311845A (en) * 2022-06-23 2022-11-08 浙江大华技术股份有限公司 Vehicle passing guiding method and device, computer equipment and readable storage medium
CN115909770A (en) * 2022-11-08 2023-04-04 云度新能源汽车有限公司 Traffic intersection vehicle passing method and vehicle passing system thereof

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Application publication date: 20200626