CN111785040A - Traffic passing prompting method and device based on green wave band - Google Patents
Traffic passing prompting method and device based on green wave band Download PDFInfo
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- CN111785040A CN111785040A CN202010665500.2A CN202010665500A CN111785040A CN 111785040 A CN111785040 A CN 111785040A CN 202010665500 A CN202010665500 A CN 202010665500A CN 111785040 A CN111785040 A CN 111785040A
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/07—Controlling traffic signals
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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
- G08G1/096—Arrangements for giving variable traffic instructions provided with indicators in which a mark progresses showing the time elapsed, e.g. of green phase
Abstract
The invention discloses a traffic passing prompting method and a traffic passing prompting device based on a green wave band, wherein the prompting method comprises the following steps: acquiring green light information corresponding to a first lane on a green-wave-band road in real time; starting the light-emitting unit according to the green light starting time in the green light information; acquiring the arrangement number of the luminous bricks; respectively acquiring the light-emitting prompt time of each light-emitting brick according to the arrangement number and the green light duration; and controlling the corresponding light-emitting brick to be in a first light-emitting state according to the light-emitting prompt time. According to the invention, the light-emitting unit corresponding to the first lane is controlled to be in the first light-emitting state through the green light information acquired in real time, and road green light prompting is carried out on the motor vehicle driver on the first lane, so that the situation that the driver makes a red light rush through the intersection due to the fact that the front motor vehicle shields the sight line is effectively prevented, the safety of crossing traffic is improved, the light-emitting brick is not influenced by the factors that the traditional coating marked line is easy to peel off, the visibility is not high in severe weather, and the service life is longer.
Description
Technical Field
The invention belongs to the technical field of road traffic equipment, and particularly relates to a traffic passing prompting method and device based on a green wave band.
Background
With the deep reformation and high-speed development of economic construction, urban population is greatly increased, the total quantity of motor vehicles is also continuously increased, and the phenomena of traffic jam, traffic order disorder and the like in large and medium cities are increasingly serious. To improve these phenomena, the main current measures are to build new roads to disperse too concentrated traffic flows, but the cost of building new roads is long and the road traffic demand cannot be fully satisfied. Therefore, how to effectively utilize the existing road network resources becomes one of the research hotspots of the current road traffic.
Road traffic depth investigation is carried out from the perspective of a motor vehicle driver, and the following two main conclusions are obtained:
(1) when the front motor vehicles (such as trucks, buses and the like) shield the sight line due to large vehicle body sizes, drivers of rear motor vehicles cannot see the traffic light indication in time, and easily drive through intersections along with the front motor vehicles, so that the red light running condition occurs, the traffic accidents caused by the red light running condition account for more than 10% of the total number of the traffic accidents, and the number of dead and injured people is countless. In order to avoid the situation, a motor vehicle driver needs to keep a sufficient lookout range to clearly see signal lamps at the intersection, but the distance between vehicles is enlarged, so that the passing distance of the motor vehicles is lengthened, the number of the motor vehicles passing through the intersection is reduced in the same green light time, and the passing pressure of the road is increased;
(2) the lane boundary is usually formed by painting, and the paint is likely to peel off after a certain period of use, and if the paint is not applied again in time, the lane boundary is likely to mislead the judgment of the driver's mark, especially in the case where the boundary near the intersection is peeled off from the solid line to the broken line. In addition, under the severe weather conditions of yin, rain, fog and the like, the reflecting capacity of the coating is limited, a driver cannot see the lane boundary in time, and the conditions of pressing the line, driving into a wrong lane and the like frequently occur, so that the number of traffic accidents caused by the conditions is countless.
Disclosure of Invention
In view of the above, the present invention provides a traffic passage prompting method and device based on a green wave band, which perform road green light prompting on a motor vehicle driver by controlling a light emitting state of a light emitting unit, so as to improve the safety of road passage.
In order to solve the technical problem, on one hand, the invention provides a traffic passage prompting method based on a green wave band, which comprises the following steps:
acquiring green light information corresponding to a first lane on a green-wave-band road in real time; the green light information includes a green light start time and a green light duration;
starting the light-emitting unit according to the green light starting time; the light-emitting unit is arranged corresponding to the first lane and comprises a plurality of light-emitting bricks which are arranged on the road surface along a first direction, and the first direction is parallel to the extending direction of the first lane;
acquiring the arrangement number of the luminous bricks;
respectively acquiring the light-emitting prompt time of each light-emitting brick according to the arrangement number and the green light duration; the luminous prompt time comprises a prompt starting time and a prompt duration;
controlling the corresponding light-emitting brick to be in a first light-emitting state according to the prompt starting time and the prompt duration; in the first light emitting state, the light emitting color of the light emitting brick is green.
Optionally, the obtaining the light-emitting prompt time of each light-emitting brick respectively includes:
numbering the light-emitting bricks in sequence along a first direction; the number of the 1 st light-emitting bricks is close to the lane stop line, the number of the nth light-emitting bricks is far from the lane stop line, and n is the arrangement number of the light-emitting bricks;
the calculation formula of the cue duration Tc of each light-emitting brick is as follows:
tc = T/n; wherein T is the duration of the green light;
the calculation formula of the prompt start time Ts of the ith light-emitting brick is as follows:
Ts= T0+ (n-i) Tc; in the formula, T0I is a positive integer from 1 to n for the green light start time.
Optionally, the obtaining the light-emitting prompt time of each light-emitting brick respectively includes:
numbering the light-emitting bricks in sequence along a first direction; the number of the 1 st light-emitting bricks is close to the lane stop line, the number of the nth light-emitting bricks is far from the lane stop line, and n is the arrangement number of the light-emitting bricks;
the calculation formula of the presentation start time Ts of each light-emitting brick is as follows:
Ts=T0(ii) a In the formula, T0The green light start time;
the calculation formula of the prompt duration Tc of the ith light-emitting brick is as follows:
tc = (n-i + 1) T/n; where T is the green duration and i is a positive integer from 1 to n.
Optionally, the calculation formula of the laying length S of the light emitting unit is as follows:
s = k · min (VcT, L); in the formula, k is more than 0 and less than or equal to 1, Vc is the limited vehicle speed of the first lane, T is the duration of the green light, and L is the length of the first lane.
Optionally, the light emitting unit is arranged close to a lane boundary of the first lane.
Optionally, the lane boundary of the first lane comprises a first line portion and a second line portion, the first line portion is formed by laying the light emitting unit, and the second line portion is formed by coating the paint.
Optionally, the prompting method further includes:
judging whether the current moment is within the light-emitting prompt time or not;
if the current time is within the light-emitting prompt time, the corresponding light-emitting brick is continuously controlled to be in the first light-emitting state; otherwise, the corresponding light-emitting brick is controlled to be switched from the first light-emitting state to the second light-emitting state.
Optionally, in the second lighting state, the lighting color of the lighting tile is white or yellow.
Optionally, the width of each light emitting tile in the light emitting unit is the same as the width of the second line portion.
On the other hand, the invention also provides a traffic passing prompting device based on the green wave band, which comprises the following components:
the first acquisition module is used for acquiring green light information corresponding to a first lane on a green band road in real time; the green light information includes a green light start time and a green light duration;
the starting module is used for starting the light-emitting unit according to the starting time of the green light; the light-emitting unit is arranged corresponding to the first lane and comprises a plurality of light-emitting bricks which are arranged on the road surface along a first direction, and the first direction is parallel to the extending direction of the first lane;
the second acquisition module is used for acquiring the arrangement number of the light-emitting bricks;
the third acquisition module is used for respectively acquiring the light-emitting prompt time of each light-emitting brick according to the arrangement number and the green light duration; the luminous prompt time comprises a prompt starting time and a prompt duration;
the light-emitting control module is used for controlling the corresponding light-emitting bricks to be in a first light-emitting state according to the prompt starting time and the prompt duration; in the first light emitting state, the light emitting color of the light emitting brick is green.
Compared with the prior art, the traffic passage prompting method and device based on the green wave band, provided by the invention, at least realize the following beneficial effects:
(1) the green light prompting method is based on the green wave band passing technology, the light-emitting unit corresponding to the first lane is controlled to be in the first light-emitting state by acquiring the green light information, and the green light prompting is carried out on the motor vehicle driver on the first lane;
(2) the first light-emitting state of each light-emitting brick depends on the light-emitting prompting time, and the light-emitting prompting time is related to the arrangement number of the light-emitting bricks and the green light duration of the corresponding lane, namely the light-emitting prompting time of the light-emitting unit can be flexibly adjusted by changing the arrangement number and/or the green light duration so as to meet the lane requirement;
(3) because the light-emitting brick is in a road surface light-emitting form, when the light-emitting unit is close to the lane boundary or directly replaces part of the lane boundary, the light-emitting brick can assist a motor vehicle driver to identify the lane boundary, is not influenced by factors such as peeling of paint, bad weather and the like, and further ensures the safety of crossing traffic.
Drawings
FIG. 1 is a flow chart of a traffic passage prompting method based on green wave band provided by the invention;
FIG. 2 is a schematic view of a light emitting unit of the present invention laid on a road surface;
FIG. 3 is a schematic view of another arrangement of the light emitting units of the present invention on a road surface;
FIG. 4 is a schematic view of another arrangement of the light emitting units of the present invention on a road surface;
fig. 5 is a block diagram of a traffic passage prompting device based on a green wave band according to the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of steps and components, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
Example one
Referring to fig. 1 and fig. 2, the present invention provides a traffic passage prompting method based on a green wave band, including the following steps:
step S1: acquiring green light information corresponding to a first lane 10 on a green-wave-band road in real time; the green light information includes a green light start time and a green light duration.
Specifically, the green wave band generally refers to a road on a specified traffic route, and after the speed of a road section is specified, a signal lamp controller is required to correspondingly adjust the starting time of green lamps at each intersection where a traffic flow passes according to the distance of the road section so as to ensure that a motor vehicle just meets the green lamps when arriving at each intersection, thereby realizing optimization of road traffic efficiency. In this step, the green light information corresponding to the first lane 10 on the green band road is obtained in real time, so that the passing time of the first lane 10 can be known in time, and the light emitting unit 20 is controlled to emit light in the following step, and the green light information related to the light emitting unit 20 mainly includes a green light starting time and a green light duration, wherein the green light starting time is mainly used for determining when to turn on the light emitting unit 20, and the green light duration is mainly used for controlling the light emitting duration of the light emitting unit 20, which is described in detail in the following step. In general, the green light information corresponding to each lane of the road is periodically fixed, but at some intersections with a signal light timing optimization function, the green light information corresponding to the lane changes with the change of traffic flow.
Step S2: turning on the light emitting unit 20 according to the green light start time; the light emitting unit 20 is disposed corresponding to the first lane 10, and the light emitting unit 20 includes a plurality of light emitting bricks 21 arranged on a road surface along a first direction X, which is parallel to an extending direction of the first lane 10.
In this step, the light emitting unit 20 is used to indirectly provide the green light condition of the intersection for the vehicle driver, for example, when the front vehicle blocks the view, the rear vehicle driver can determine whether the front vehicle passes through the intersection according to the light emitting unit 20, and at this time, the light emitting unit 20 is turned on according to the start time of the green light, so that the light emitting unit 20 performs green light signal prompt synchronously therewith.
The light-emitting unit 20 is arranged in correspondence with the first lane 10, i.e. the motor vehicle traveling in the first lane 10 recognizes the traffic information by means of the light-emitting unit 20 associated with this lane. The first lane 10 may be a straight lane, a left-turn lane, or another lane requiring green light control, and in order to more intuitively illustrate the scheme of the present embodiment, fig. 1 only illustrates that a road is provided with three straight lanes, and one of the straight lanes is the first lane 10.
The light-emitting bricks 21 in the light-emitting unit 20 are arranged along the first direction X, and since the first direction X is parallel to the extending direction of the first lane 10, that is, the light-emitting bricks 21 are laid on the road surface in a linear manner, the driver of the motor vehicle can more intuitively observe the light-emitting state of the light-emitting bricks 21 during driving.
Step S3: the arrangement number of the light emitting bricks 21 is obtained. Specifically, the number of the light emitting bricks 21 can be flexibly set according to actual needs before or during the laying of the light emitting unit 20, but is a certain value after the laying is completed. When there are two or more first lanes 10, the number of the light-emitting bricks 21 corresponding to each first lane 10 may be the same or different.
Step S4: respectively acquiring the light-emitting prompt time of each light-emitting brick 21 according to the arrangement number and the green light duration; the light emitting cue time includes a cue start time and a cue duration.
In this step, the light-emitting prompting time of the light-emitting bricks 21 depends on the arrangement number of the light-emitting bricks 21 and the duration of the green lights, and the prompting start time and the prompting duration of each light-emitting brick 21 can be set to be all the same, partially the same or all different according to actual needs so as to meet the traffic indication requirements of different intersections.
Step S5: controlling the corresponding light-emitting brick 21 to be in a first light-emitting state according to the prompt start time and the prompt duration; in the first lighting state, the lighting color of the lighting brick 21 is green. That is to say, each light-emitting brick 21 can independently be matched with suggestion start time and suggestion duration, and only under the condition that satisfies these two time requirements simultaneously, the light-emitting brick 21 that corresponds just can be in first luminous state to under first luminous state, light-emitting brick 21 carries out green light suggestion to the motor vehicle driver through sending green glow, thereby can effectively prevent the driver because of the place ahead motor vehicle shelters from the sight and the emergence of the tail passing through the crossing condition of rushing the red light, improve the security that the crossing was passed through.
In some optional embodiments, in the process of respectively obtaining the light-emitting prompt time of each light-emitting brick 21 in step S4, the method specifically includes the following steps:
the light-emitting bricks 21 are numbered in sequence along a first direction X; the 1 st light-emitting brick 21 is arranged close to the lane stop line 11, the nth light-emitting brick 21 is arranged far from the lane stop line 11, and n is the arrangement number of the light-emitting bricks 21, at this time, the first direction X is the direction far from the lane stop line 11 at the intersection, that is, the direction pointed by the arrow in the first direction X shown in fig. 1.
The presentation duration Tc of each light-emitting tile 21 is calculated as follows:
tc = T/n; wherein T is the duration of the green light;
the calculation formula of the presentation start time Ts of the ith light-emitting tile 21 is as follows:
Ts= T0+ (n-i) Tc; in the formula, T0At green light start time, i is positive from 1 to nAn integer number.
Specifically, the number n of the light-emitting bricks 21 arranged after the pavement is laid is a certain value, and the duration T of the green light is also a certain value in each green band period, so that the presentation duration Tc of each light-emitting brick 21 is also a certain value, and the duration Tc of the green light of each light-emitting brick 21 is the same. The turn-on time of the light emitting unit 20 depends on the green light start time T0Since the presentation start time Ts of each light-emitting brick 21 is related to the number i of the light-emitting brick 21, the nth light-emitting brick 21 is at T in the opposite direction to the first direction X according to the calculation formula of the presentation start time Ts0Emits green light at any moment for Tc duration, and then the (n-1) th light-emitting brick 21 emits light at T0The + Tc time emits green light for the same duration … …, and so on, at T for the 1 st tile 210The green light is emitted at time + n-1 Tc for the same duration. From the visual effect, as time goes on, the number of the light-emitting brick 21 emitting green light continuously approaches the lane stop line 11 and is the same as the driving direction of the motor vehicle, so that the light-emitting unit 20 does not interfere with the driving direction of the motor vehicle in the first light-emitting state, and the light-emitting unit 20 with dynamic change is beneficial to further improving the light-emitting prompting effect and reducing the incidence rate of intersection traffic accidents.
In some optional embodiments, in the process of respectively obtaining the light-emitting prompt time of each light-emitting brick 21 in step S4, the method specifically includes the following steps:
the light-emitting bricks 21 are numbered in sequence along a first direction X; the 1 st light-emitting brick 21 is arranged close to the lane stop line 11, the nth light-emitting brick 21 is arranged far from the lane stop line 11, and n is the arrangement number of the light-emitting bricks 21, at this time, the first direction X is the direction far from the lane stop line 11 at the intersection, that is, the direction pointed by the arrow in the first direction X shown in fig. 1.
The calculation formula of the presentation start time Ts of each light-emitting tile 21 is as follows:
Ts=T0(ii) a In the formula, T0The green light start time;
the calculation formula of the presentation duration Tc of the ith light-emitting tile 21 is as follows:
tc = (n-i + 1) T/n; where T is the green duration and i is a positive integer from 1 to n.
Specifically, the presentation start time Ts and the green light start time T of each light-emitting tile 210Similarly, that is, in each green band period, when the signal lamp starts to be a green lamp, all the light-emitting bricks 21 in the light-emitting unit 20 emit green light at the same time and are in the first light-emitting state; meanwhile, the arrangement number n of the light-emitting bricks 21 after the laying is finished is a determined numerical value, and the green light duration time T is also a determined numerical value, so the prompt duration time Tc of each light-emitting brick 21 is only related to the number i of the light-emitting brick 21, according to a calculation formula of the prompt duration time Tc, in the reverse direction along the first direction X, the duration time T/n of the nth light-emitting brick 21 emits green light, the duration time n-1 of the nth light-emitting brick 21 lasts 2T/n emits green light … …, and so on, the duration time T of the 1 st light-emitting brick 21 emits green light. From the visual effect, all the light-emitting bricks 21 in the light-emitting unit 20 are firstly and simultaneously lighted to emit green light, and as time goes on, the number of the light-emitting bricks 21 emitting green light is continuously reduced along the direction close to the stop line 11, and the reduction direction is the same as the driving direction of the motor vehicle, so that the light-emitting unit 20 can not interfere with the driving direction of the motor vehicle in the first light-emitting state, and the light-emitting unit 20 with dynamic change is beneficial to further improving the light-emitting prompt effect and reducing the incidence rate of traffic accidents at intersections.
In some alternative embodiments, the calculation formula of the laying length S of the light emitting unit 20 is as follows:
s = k · min (VcT, L); in the formula, k is more than 0 and less than or equal to 1, Vc is the limited vehicle speed of the first lane 10, T is the duration of the green light, and L is the length of the first lane 10.
Specifically, since the length L of the first lane 10 is a certain value, in the case where it is determined that the vehicle speed Vc is limited, the duration T of the green light in each green band period is also a certain value, so that the minimum value of the two values VcT and L is determined. When the L value is large, that is, the distance between the two intersections connected to the first lane 10 is large, and when the value of VcT is small relative to the L value, the laying length S = k · VcT of the light emitting unit 20 may be set preferably at the point where the L value is largeUnder the limit, the length R of the luminous brick 21 is reasonably set1And the spacing R between adjacent light-emitting bricks 212I.e. according to the formula S = nR1+（n-1）R2The value of the arrangement number n is obtained, and the indication start time Ts and the indication duration time Tc of each light-emitting brick 21 in the light-emitting unit 20 are derived according to the above formula. When the value of L is small, i.e. the distance between two intersections connected by the first lane 10 is small (usually appearing in a busy section in an urban area), the laying length S should be limited within a suitable range based on the value of L, and the value of the arrangement number n can still be set according to the formula S = nR1+（n-1）R2And (6) calculating. Spacing R between adjacent light-emitting bricks 212All of them can be set to be the same (as shown in fig. 1), partially the same or completely different according to actual needs, and the embodiment only uses the distance R2All the same are explained as examples.
It should be noted that, in the first direction X, the 1 st light-emitting brick 21 is disposed close to the lane stop line 11 at the intersection, and the distance between the 1 st light-emitting brick 21 and the lane stop line 11 can be flexibly set according to actual needs, and fig. 1 illustrates that only the 1 st light-emitting brick 21 is tightly attached to the lane stop line 11 as an example. In other alternative embodiments, since the lane stop line 11 is one of the signs that limit whether the vehicle is allowed to pass through the intersection, the smaller the distance between the 1 st light-emitting brick 21 and the lane stop line 11 is, the better the green light information prompting effect for the vehicle driver is.
In some alternative embodiments, the light emitting unit 20 is disposed adjacent to the lane boundary 12 of the first lane 10, so as to assist the vehicle driver in recognizing the approximate position of the lane boundary and provide the vehicle driver with a road green light signal synchronization prompt through the light emitting tiles 21 without changing the original paint markings. When the first lanes 10 are straight lanes and the number of the first lanes is large, only one light-emitting unit 20 may be disposed between adjacent straight lanes to reduce the construction cost of the road surface light-emitting bricks 21.
In some alternative embodiments, referring to fig. 3, the lane boundary 12 of the first lane 10 includes a first line portion 121 and a second line portion 122, the first line portion 121 is formed by laying the light emitting units 20, and the second line portion 122 is formed by coating paint. Namely, one part of the lane boundary 12 is the luminous brick 21, and the other part is the paint marked line, on one hand, the luminous brick 21 and the paint marked line are both used as marked lines to separate the first lane 10 and the adjacent lane, so that the motor vehicle can drive in the corresponding lane; on the other hand, in each green wave band period, the light-emitting brick 21 can also prompt green light information of the intersection for the motor vehicle driver, so as to prevent the motor vehicle from running ahead when the front motor vehicle blocks the sight line. In addition, under the severe weather conditions such as the cloudy weather, the rain, the fog and the like, the first line part 121 formed by paving the light-emitting unit 20 has better light-emitting warning effect compared with the traditional paint marked line, can clearly remind the driver of the motor vehicle not to press the line or drive into a wrong lane, has no influence of easy peeling of the paint on the light-emitting effect of the light-emitting unit 20, and has longer service life on the road surface.
Based on this, the above prompting method further includes: judging whether the current moment is within the light-emitting prompt time or not; if the current time is within the light-emitting prompt time, the corresponding light-emitting brick 21 is continuously controlled to be in the first light-emitting state; otherwise, the corresponding light-emitting tile 21 is controlled to switch from the first light-emitting state to the second light-emitting state. Specifically, in the case of a green light, the first line portion 121 in the first lighting state emits green light to prompt a driver of the motor vehicle of green light information; in the case of a non-green lamp, the first line 121 is in a second light emitting state, preferably, in the second light emitting state, the light emitting color of the light emitting brick 21 is white or yellow, and in this case, the light emitting color of the first line 121 and the paint color of the second line 122 may be the same as white or yellow to form a white or yellow boundary line.
In general, the lane line 12 has two portions of a solid line and a dotted line, the number of the light-emitting bricks 21 in the first line 121 may be set according to actual needs, and when the number of the light-emitting bricks 21 is small, the light-emitting bricks may be laid only on the solid line portion of the lane line 12, and the light-emitting bricks 21 may be laid continuously to provide a marking effect; when the number of the light-emitting bricks 21 is large, that is, the laying length of the light-emitting unit 20 is large, the light-emitting bricks 21 can be laid on the solid line part and the imaginary line part of the lane boundary 12 at the same time, and the laying distance is set according to the original lane boundary 12 of the road surface.
More preferably, the width of each light-emitting brick 21 in the light-emitting unit 20 is the same as the width of the second line part 122, and in this case, the first line part 121 and the second line part 122 formed by laying the light-emitting units 20 are provided with the same width in terms of visual effect, so that the appearance of the road marking is ensured, the occurrence of the situation of line-of-sight misdisturbance due to the difference in width can be effectively prevented, and the safety of road traffic is further ensured.
In some alternative embodiments, please refer to fig. 4, the first lane 10 is a left-turn lane configured with a light emitting unit; in the second lighting state, the lighting color of the lighting brick 21 is yellow. That is, in the second light emitting state, the light emitting unit 20 emits light in the same color as the paint of the lane line 12, and since the sight line of the driver is mainly the left sight line of the vehicle when the vehicle turns left, the yellow light of the light emitting unit 20 can effectively assist the vehicle driver to distinguish the left-turning lane from the opposite lane when the ambient light is weak, such as at night, so as to avoid driving into the wrong lane. In the first lighting state, the lighting color of the lighting unit 20 is green, which prompts the driver of the motor vehicle to turn left to enter the intersection, thereby ensuring the traffic safety of the intersection. In this case, the light emitting unit 20 may be laid in a manner as needed, and fig. 4 illustrates only a part of the lane line 12 formed by laying the light emitting unit.
Example two
Referring to fig. 2 and 5, the present invention further provides a traffic passage prompting device based on a green wave band, including:
the first acquisition module 3 is used for acquiring green light information corresponding to a first lane 10 on a green-wave-band road in real time; the green light information includes a green light start time and a green light duration;
a turn-on module 4 for turning on the light emitting unit 20 according to the green light start time; the light emitting unit 20 is disposed corresponding to the first lane 10, and the light emitting unit 20 includes a plurality of light emitting bricks 21 arranged on a road surface along a first direction X, where the first direction X is parallel to an extending direction of the first lane 10;
the second obtaining module 5 is used for obtaining the arrangement number of the light-emitting bricks 21;
the third obtaining module 6 is configured to obtain the light emitting prompt time of each light emitting brick 21 according to the arrangement number and the green light duration; the luminous prompt time comprises a prompt starting time and a prompt duration;
the light-emitting control module 7 is used for controlling the corresponding light-emitting brick 21 to be in a first light-emitting state according to the prompt start time and the prompt duration; in the first lighting state, the lighting color of the lighting brick 21 is green.
In this embodiment, the light-emitting control module 7 configures independent prompt start time and prompt duration for each light-emitting brick 21 to control the corresponding light-emitting brick 21 to be in the first light-emitting state, and at this time, the light-emitting brick 21 emits green light to prompt a driver of a motor vehicle of green light on the road surface, which is beneficial to preventing the driver from passing through an intersection and the like due to the fact that the front motor vehicle blocks the sight line and running red light at the end, and reducing the incidence of traffic accidents at the intersection.
The structure of the light-emitting brick 21 can be set according to the actual intersection use requirement, for example, a split structure in which a brick body made of a light-transmitting material is mounted on a base, and at this time, the light-transmitting material can be a light-transmitting resin material with good bearing property or a toughened glass material with good light-transmitting property; and for example, an integrated structure which adopts an assembly process to encapsulate the light source in the shell, and the like. The structures of the luminous bricks 21 are not influenced by factors such as easy peeling of traditional paint marked lines and poor visibility in severe weather, and the service life of the luminous bricks on the road surface is longer.
The traffic passing prompting method and device based on the green wave band, provided by the invention, at least realize the following beneficial effects:
(1) the green light prompting method is based on the green wave band passing technology, the light-emitting unit corresponding to the first lane is controlled to be in the first light-emitting state by acquiring the green light information, and the green light prompting is carried out on the motor vehicle driver on the first lane;
(2) the first light-emitting state of each light-emitting brick depends on the light-emitting prompting time, and the light-emitting prompting time is related to the arrangement number of the light-emitting bricks and the green light duration of the corresponding lane, namely the light-emitting prompting time of the light-emitting unit can be flexibly adjusted by changing the arrangement number and/or the green light duration so as to meet the lane requirement;
(3) because the light-emitting brick is in a road surface light-emitting form, when the light-emitting unit is close to the lane boundary or directly replaces part of the lane boundary, the light-emitting brick can assist a motor vehicle driver to identify the lane boundary, is not influenced by factors such as peeling of paint, bad weather and the like, and further ensures the safety of crossing traffic.
The above embodiments are only for illustrating the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical scheme according to the technical idea proposed by the present invention falls within the protection scope of the present invention; the technology not related to the invention can be realized by the prior art.
Claims (10)
1. A traffic passing prompting method based on a green wave band is characterized by comprising the following steps:
acquiring green light information corresponding to a first lane on a green-wave-band road in real time; the green light information includes a green light start time and a green light duration;
starting a light emitting unit according to the green light starting time; the light-emitting unit is arranged corresponding to the first lane and comprises a plurality of light-emitting bricks which are arranged on the road surface along a first direction, and the first direction is parallel to the extending direction of the first lane;
acquiring the arrangement number of the light-emitting bricks;
respectively acquiring the light-emitting prompt time of each light-emitting brick according to the arrangement number and the green light duration; the luminous prompt time comprises a prompt starting time and a prompt duration;
controlling the corresponding light-emitting brick to be in a first light-emitting state according to the prompt starting time and the prompt duration; and in the first light emitting state, the light emitting color of the light emitting brick is green.
2. The traffic passage prompting method based on the green wave band as claimed in claim 1, wherein the obtaining of the light emitting prompting time of each light emitting brick comprises:
numbering the light-emitting bricks in sequence along the first direction; the 1 st light-emitting brick is arranged close to a lane stop line, the nth light-emitting brick is arranged far away from the lane stop line, and n is the arrangement number of the light-emitting bricks;
the calculation formula of the prompt duration Tc of each light-emitting brick is as follows:
tc = T/n; wherein T is the duration of the green light;
the calculation formula of the prompt start time Ts of the ith light-emitting brick is as follows:
Ts= T0+ (n-i) Tc; in the formula, T0I is a positive integer from 1 to n for the green light start time.
3. The traffic passage prompting method based on the green wave band as claimed in claim 1, wherein the obtaining of the light emitting prompting time of each light emitting brick comprises:
numbering the light-emitting bricks in sequence along the first direction; the 1 st light-emitting brick is arranged close to a lane stop line, the nth light-emitting brick is arranged far away from the lane stop line, and n is the arrangement number of the light-emitting bricks;
the calculation formula of the prompt start time Ts of each light-emitting brick is as follows:
Ts=T0(ii) a In the formula, T0The green light start time;
the calculation formula of the prompt duration Tc of the ith luminous brick is as follows:
tc = (n-i + 1) T/n; where T is the green duration and i is a positive integer from 1 to n.
4. The traffic passage prompting method based on the green wave band according to claim 1, wherein the calculation formula of the laying length S of the light emitting unit is as follows:
s = k · min (VcT, L); in the formula, k is more than 0 and less than or equal to 1, Vc is the limited vehicle speed of the first lane, T is the duration of the green light, and L is the length of the first lane.
5. The traffic passage prompting method based on the green wave band as claimed in claim 1, wherein the light emitting unit is disposed near a lane boundary of the first lane.
6. The traffic passage prompting method based on the green wave band according to claim 1, wherein a lane boundary of the first lane includes a first line portion and a second line portion, the first line portion is laid by the light emitting unit, and the second line portion is coated by a paint.
7. The traffic passage prompting method based on the green wave band as claimed in claim 6, characterized in that the prompting method further comprises:
judging whether the current moment is within the light-emitting prompt time or not;
if the current moment is within the light-emitting prompt time, continuously controlling the corresponding light-emitting brick to be in a first light-emitting state; otherwise, controlling the corresponding light-emitting brick to be switched from the first light-emitting state to the second light-emitting state.
8. The traffic passage prompting method based on the green wave band of claim 7, wherein in the second lighting state, the lighting color of the lighting brick is white or yellow.
9. The traffic passage prompting method based on the green band according to claim 6, wherein a width of each light emitting brick in the light emitting unit is the same as a width of the second line portion.
10. A traffic passage prompting device based on a green wave band is characterized by comprising:
the first acquisition module is used for acquiring green light information corresponding to a first lane on a green band road in real time; the green light information includes a green light start time and a green light duration;
the starting module is used for starting the light-emitting unit according to the green light starting time; the light-emitting unit is arranged corresponding to the first lane and comprises a plurality of light-emitting bricks which are arranged on the road surface along a first direction, and the first direction is parallel to the extending direction of the first lane;
the second acquisition module is used for acquiring the arrangement number of the light-emitting bricks;
the third acquisition module is used for respectively acquiring the light-emitting prompt time of each light-emitting brick according to the arrangement number and the green light duration; the luminous prompt time comprises a prompt starting time and a prompt duration;
the light-emitting control module is used for controlling the corresponding light-emitting brick to be in a first light-emitting state according to the prompt starting time and the prompt duration; and in the first light emitting state, the light emitting color of the light emitting brick is green.
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Application publication date: 20201016 |