CN111882891A - Method and system for laying projection type zebra crossing - Google Patents

Method and system for laying projection type zebra crossing Download PDF

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Publication number
CN111882891A
CN111882891A CN202010740803.6A CN202010740803A CN111882891A CN 111882891 A CN111882891 A CN 111882891A CN 202010740803 A CN202010740803 A CN 202010740803A CN 111882891 A CN111882891 A CN 111882891A
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zebra
pedestrian
signal lamp
light
crossing
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胡晓伟
张炎棠
龚惠
韩笑雪
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Harbin Institute of Technology
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Harbin Institute of Technology
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Priority to CN202010740803.6A priority Critical patent/CN111882891A/en
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    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/07Controlling traffic signals
    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/005Traffic control systems for road vehicles including pedestrian guidance indicator
    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/09Arrangements for giving variable traffic instructions

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  • General Physics & Mathematics (AREA)
  • Traffic Control Systems (AREA)

Abstract

The invention relates to a method for laying a projection type zebra crossing. Setting the roadside close to the signal lamp as side A, the roadside far away from the signal lamp as side B, and the vertical point of the middle area of the road as side O; the pedestrian crossing way is a left-right lane dividing way, and a left lane is a pedestrian crossing lane from A to B, and a right lane is a pedestrian crossing lane from B to A; when a signal lamp which can be used by pedestrians is turned on, the zebra stripes are gradually projected to the position O from the two sides of the position A, B, and the left lane and the right lane are projected at the same time; and in the countdown stage of the signal lamps which can be used by pedestrians, the left and right lanes cancel projection respectively. The invention changes the traditional zebra crossing laying mode from a fixed mode to a variable mode, and utilizes a control device designed on a traffic signal lamp to project a zebra crossing barrier light band in the time period when pedestrian signals can pass through the signal lamp, and does not project the light band in the time period when no pedestrian passes through the signal lamp.

Description

Method and system for laying projection type zebra crossing
Technical Field
The invention belongs to the technical field of traffic engineering, and particularly relates to a method and a system for laying a projection type zebra crossing.
Background
With the continuous development of pedestrian slow traffic and the continuous increase of pedestrian crossing demand, pedestrian violation crossing behaviors are frequently seen, which reflects the urgent need of pedestrian crossing. However, the regulation of driving of normal vehicles is disturbed to a certain extent by the illegal street crossing, and the safety risk of the pedestrians crossing the street is greatly increased. At present, the limitation on pedestrian crossing against regulations mainly lies in improvement of hard measures on two sides of a zebra crossing, such as intercepting devices like railings and the like. However, the regulation of the illegal street crossing behavior is only carried out on the 'no-let' level, that is, the relevant departments adopt strong measures to forbid pedestrians from crossing the street in the non-pedestrian time period, and the regulation is not carried out on the pedestrians themselves or on the 'no-want' level.
The countdown of the pedestrian signal lamp only stimulates pedestrians to cross the street as soon as possible in a digital mode, and does not inform the pedestrians of the street crossing rate when the pedestrian stops crossing at the countdown time, so that the contact time of the pedestrians and vehicles is prolonged, and the traffic capacity is limited.
Disclosure of Invention
The invention provides a method and a system for laying a projection type zebra crossing, aiming at solving the problem of high occurrence frequency of pedestrian illegal crossing behaviors.
The invention relates to a method for laying a projection type zebra crossing.
Further, a roadside close to the signal lamp is a side A, a roadside far away is a side B, and a vertical point of a road middle area is O; the pedestrian crossing way is a left-right lane dividing way, and a left lane is a pedestrian crossing lane from A to B, and a right lane is a pedestrian crossing lane from B to A; when a signal lamp which can be used by pedestrians is turned on, the zebra stripes are gradually projected to the position O from the two sides of the position A, B, and the left lane and the right lane are projected at the same time; in the countdown phase of the signal lamps which can be used by pedestrians, the left and right lanes cancel projection respectively, and when the signal lamp which can be used by the next pedestrian is turned on, the process is repeated.
Further, when a signal lamp which can be used by a pedestrian is turned on, the control device projects zebra crossing barrier light bands from two sides of the road to the vertical point O at angular speeds w1 and w2 to an area where the zebra crossing needs to be laid.
Further, the calculation formulas of w1, w2 in the signal light on period in which pedestrians can pass are as follows:
w1=v1*sin2θ1/h
w2=v1*sin2θ2(d-l1)/(h*l1)
tanθ1=h/(l1-v1*t)
t1=l1/v1
v2=l2/t1
tanθ2=h/(l2-v2*t)
w1 is the angular velocity corresponding to side A, w2 is the angular velocity corresponding to side B, and h is the height of the signal lamp from the ground; a vertical line is drawn from the control device to the ground, the closer side of the intersection point is l1, and the other side is l 2; included angles formed by a connecting line of a point where the device is located and starting points at two ends of the ground and the ground are theta 1 and theta 2 respectively, wherein v1 and v2 are moving speeds of the zebra crossing light strip moving from the A, B side to the vertical point O, a time variable of the zebra crossing light strip moving from the two ends of the road to the vertical point O is t, and the road width length is d.
Further, the control device does not lay a zebra crossing on the pedestrian road area when the traffic light is on during a time period in which no pedestrian can pass.
Further, when a signal light which can be passed by a pedestrian enters a countdown, the barrier light belts from two sides of the road to corresponding opposite sides cancel the barrier light belts projected to the left and right roads respectively at angular speeds w3 and w 4.
Further, the calculation formulas of w3, w4 at the signal light countdown period during which the pedestrian can pass are as follows:
w3=w31=v1*sin2(arctan(h/(l1-v1*t)))/h,l1≥v1*t,A→O
w3=w32=v1*sin2(arctan(h/(v1*t-l1)))/h,v1*t≥l1,O→B
w4=w41=v1*sin2(arctan(h/(l2-v1*t)))/h,l2≥v1*t,B→O
w4=w42=v1*sin2(arctan(h/(v1*t-l2)))/h,v1*t≥l1,O→A
wherein w3 is the angular velocity from the A side to the B side, w4 is the angular velocity from the B side to the A side,/l 1-v1 t/. gtoreq.0,/l 2-v1 t/. gtoreq.0; w31 and W32 are the angular velocities of the zebra crossing light strips from the A side to the O point and from the O point to the B side, respectively.
Further, the signal lamp is a cantilever type signal lamp.
The invention also relates to a laying system of the projection type zebra crossing, which comprises a traffic signal lamp, a control device and a light band transmitting device; the control device sends signals and corresponding working instructions to the traffic signal lamp and the light band transmitting device.
Further, the traffic signal lamp includes a signal lamp for a vehicle and a signal lamp for a pedestrian.
Further, the light band transmitter comprises a projected zebra crossing barrier and a light source capable of rotating to transmit, wherein the light source projects light to the zebra crossing barrier and forms the zebra crossing light band on the road surface.
The invention changes the prior zebra crossing laying mode from a fixed mode to a variable mode. By utilizing a control device designed on the traffic signal lamp, the zebra crossing barrier light band is projected in the time period when pedestrian signals can pass through the signal lamp, and the light band is not projected in the time period when no pedestrian passes through the signal lamp. Due to the design, the pedestrian can limit the active pedestrian violation crossing behavior at the two ends of the intersection in the time period without the green light signal of the pedestrian. And at the green light end of the pedestrian, the zebra stripes are cancelled at angular speeds w3 and w4 according to the green light countdown, so that whether the pedestrian should cross the street at the tail end of the green light or not and at what walking speed the pedestrian does not obstruct normal vehicle driving, and intersection with the vehicle is reduced. This is a substantial difference over previous arrangements which prohibit pedestrian traffic violations. The laying method enables pedestrians to think that the area is free of roads and can walk by temporarily canceling the laying of the zebra crossings, and the pedestrian violation street crossing behavior is psychologically warned. Because no zebra crossing can walk and then cross the street in non-pedestrian signal period, the feared psychology that the pedestrian produced and then restrict pedestrian's the action of crossing the street violating the regulations to the pedestrian behavior of crossing the street has been standardized, has alleviated the unconventional conflict of pedestrian with the vehicle, has improved road traffic ability, has strengthened the protection degree to the pedestrian simultaneously.
Drawings
FIG. 1 is a schematic diagram of the position relationship of the control device of the present invention projecting zebra crossing light strips;
FIG. 2 is a schematic diagram of another position relationship of the control device of the present invention projecting the zebra crossing light strip;
FIG. 3 is a schematic diagram of the control device of the present invention canceling the projection of zebra stripe light bands;
FIG. 4 is a schematic view of another position relationship of the control device of the present invention for canceling the projection of the zebra crossing light strip;
fig. 5 is a schematic diagram of a laying system of the projection zebra crossing of the present invention.
Detailed Description
As shown in fig. 1 to 4, the invention comprises a method for laying a projection type zebra crossing, wherein a control device is arranged on a traffic signal lamp, and when the signal lamp which can be passed by pedestrians is turned on, a zebra crossing light band is projected to a pedestrian passage through the control device. Setting the roadside close to the signal lamp as side A, the roadside far away from the signal lamp as side B, and the vertical point of the middle area of the road as side O; the pedestrian crossing way is a left-right lane dividing way, and a left lane is a pedestrian crossing lane from A to B, and a right lane is a pedestrian crossing lane from B to A; when a signal lamp which can be used by pedestrians is turned on, the zebra stripes are gradually projected to the position O from the two sides of the position A, B, and the left lane and the right lane are projected at the same time; in the countdown phase of the signal lamps which can be used by pedestrians, the left and right lanes cancel projection respectively, and when the signal lamp which can be used by the next pedestrian is turned on, the process is repeated.
When a signal lamp which can be used by pedestrians is turned on, the control device projects zebra crossing barrier light bands from two sides of the road to the vertical point O at angular speeds w1 and w2 respectively to the area where the zebra crossing needs to be laid. The calculation formulas of w1, w2 in the signal light on period in which pedestrians can pass are as follows:
w1=v1*sin2θ1/h
w2=v1*sin2θ2(d-l1)/(h*l1)
tanθ1=h/(l1-v1*t)
t1=l1/v1
v2=l2/t1
tanθ2=h/(l2-v2*t)
w1 is the angular velocity corresponding to side A, w2 is the angular velocity corresponding to side B, and h is the height of the signal lamp from the ground; a vertical line is drawn from the control device to the ground, the closer side of the intersection point is l1, and the other side is l 2; included angles formed by a connecting line of a point where the device is located and starting points at two ends of the ground and the ground are theta 1 and theta 2 respectively, wherein v1 and v2 are moving speeds of the zebra crossing light strip moving from the A, B side to the vertical point O, a time variable of the zebra crossing light strip moving from the two ends of the road to the vertical point O is t, and the road width length is d.
When the traffic light is turned on when the traffic light is not passable for pedestrians, the control device does not lay the zebra stripes on the pedestrian road area.
When a signal lamp which can be used by pedestrians enters a countdown, the barrier light belts from two sides of the road to the corresponding opposite sides cancel the barrier light belts projected to the left road and the right road at angular speeds w3 and w4 respectively. The calculation formulas of w3, w4 at the signal light countdown period during which pedestrians can pass are as follows:
w3=w31=v1*sin2(arctan(h/(l1-v1*t)))/h,l1≥v1*t,A→O
w3=w32=v1*sin2(arctan(h/(v1*t-l1)))/h,v1*t≥l1,O→B
w4=w41=v1*sin2(arctan(h/(l2-v1*t)))/h,l2≥v1*t,B→O
w4=w42=v1*sin2(arctan(h/(v1*t-l2)))/h,v1*t≥l1,O→A
wherein w3 is the angular velocity from the A side to the B side, w4 is the angular velocity from the B side to the A side,/l 1-v1 t/. gtoreq.0,/l 2-v1 t/. gtoreq.0; w31 and W32 are the angular velocities of the zebra crossing light strips from the A side to the O point and from the O point to the B side, respectively.
Preferably, the signal lamp is a cantilever signal lamp.
The invention also relates to a laying system of the projection type zebra crossing, which comprises a traffic signal lamp, a control device and a light band transmitting device; the control device sends signals and corresponding working instructions to the traffic signal lamp and the light band transmitting device. Traffic lights include lights for vehicles and lights for pedestrians. The light band transmitter comprises a projection zebra crossing barrier and a light source capable of rotating to transmit, wherein the light source projects light to the zebra crossing barrier and forms a zebra crossing light band on the road surface.
Example 1
The laying method of the projection type zebra crossing in the embodiment comprises the following steps:
step one, a green light of a pedestrian traffic signal is turned on, or at the moment of starting yellow flashing, a control device arranged on the traffic signal lamp projects a zebra crossing light band to a pedestrian channel, the phase of the time interval allows pedestrians to pass through a street, and vehicles in the corresponding lane give a gift to the pedestrians.
Step two, at the moment of starting yellow flashing, the control device projects a zebra crossing light band to a pedestrian passageway, wherein one side close to two sides of a road is used as a main side, namely side A, and the corresponding angular velocity is w 1; the angular speed of the opposite side, namely the side B is w2, the distance between the signal lamp and the ground is 4m, a perpendicular line is drawn from the control device to the ground, the side with the closer distance of the intersection point is l1, and the other side is l 2; the included angles between the connecting line of the point where the control device is located and the starting points of the two ends of the ground and the ground are respectively 30 degrees and 30 degrees, wherein v1 and v2 are the moving speeds of the zebra crossing barrier light strip moving from the A, B side to the vertical point O, and due to the symmetrical structure, v1 is v2, v1 is v2 is 1m/s, the time variable of the zebra crossing barrier light strip moving from the two ends of the road to the vertical point O is 1s, and the road width length is 8 v 3 m.
And step three, continuously moving the zebra crossing light bands from the two sides A and B of the road to a vertical point O through the control device, wherein the vertical point is the point where the control device leads the vertical line to the road surface, and the control device projects the zebra crossing light bands from the two sides at the angular speeds of w1 and w2 respectively until the light bands on the two sides reach the position of the vertical point O. The w 1-w 2-w 0661rad/s is calculated according to the formula, so that the light strip moves from the two points a and B to the vertical point O at an angular velocity of 0.0661 rad/s.
And step four, when pedestrian signals enter countdown, the control device for projecting the zebra crossing light bands cancels the projected zebra crossing barrier light bands from two sides of the road to corresponding opposite sides at angular speeds w3 and w4 by half of the width of the original zebra crossing, so that the safety of pedestrians crossing the street is ensured.
Note that w3 is fromThe angular velocity at which the side closer to the road side starts moving, i.e., the angular velocity at which the optical tape moves from a to B. w4 is the angular velocity of the light from the side farther from the road, i.e. the angular velocity of the light strip moving from B to A and the total hold/l1-v1t/≥0、/l2-v1t/≧ 0. W31, W32 are the angular velocities of the left side zebra stripe light strip from a to O, respectively, from O to B, and W41, W42 are the angular velocities of the right side zebra stripe light strip from B to O, respectively, from O to a.
When the time interval of the zebra crossing light band is cancelled, let t be 1s, and then know l1-v1t is 5.928 ≧ 0, so calculate W31, because the structural symmetry W31 ═ W41, according to the formula W31 ═ W41 ═ 0.0661rad/s, so cancel from A to B light band and cancel from B to A light band, at t is 1s time, the two angular velocities W3 and W4 of the light band cancellation zebra-line light band have been shifted by 0.0661 rad/s.
And step five, when the traffic signal lamp is in a non-pedestrian signal time period, the control device of the traffic signal lamp does not lay the zebra crossing of the pedestrian road area. The method of not setting the zebra crossing in the non-pedestrian signal time period can psychologically warn the pedestrian not to cross the street, thereby inhibiting the illegal street crossing behavior.
And step six, repeating the process at the moment when the next yellow light flickers or the pedestrian traffic signal is turned on.
It should be noted that similar lines can be considered in the simple design of the projection type zebra crossing barrier, the projection barrier is rotated and irradiated at an angular speed w by the control device through the standard zebra crossing by using the similar inverse calculation of the projection barrier size, and thus the zebra crossing light band is projected on the ground.
Example 2
The laying system of the projection type zebra crossing in the embodiment comprises a traffic signal lamp, a control device and a light band transmitting device; the control device sends signals and corresponding working instructions to the traffic signal lamp and the light band transmitting device. The traffic signal lamp comprises a signal lamp for vehicles and a signal lamp for pedestrians, and the color of the signal lamp can be timely changed according to the laying method of the projection type zebra crossing, so that the stable operation of traffic organization is guaranteed.
The light band transmitter comprises a projection zebra crossing barrier and a light source capable of rotating to transmit, wherein the light source projects light to the zebra crossing barrier and forms a zebra crossing light band on the road surface. As shown in fig. 5, c is a traffic signal lamp, the light strip transmitting device includes a projection zebra crossing barrier b and two light sources a capable of rotating to transmit, and the light sources respectively project light to the zebra crossing barrier according to the method for laying the projection zebra crossing to form the zebra crossing light strip on the road surface.
The above-mentioned contents are only calculation examples of the present invention, and are not intended to limit the embodiments of the present invention, and those skilled in the art can easily make various changes or modifications according to the main concept and spirit of the present invention, so the protection scope of the present invention shall be subject to the protection scope claimed in the claims.

Claims (10)

1. A method for laying a projection type zebra crossing is characterized in that a control device is arranged on a traffic signal lamp, and when the signal lamp allowing pedestrians to walk is turned on, a zebra crossing light band is projected to a pedestrian passage through the control device.
2. The laying method of the projective zebra crossing as claimed in claim 1, wherein the roadside closer to the signal lamp is side a, the roadside farther is side B, and the road middle region vertical point is O; the pedestrian crossing way is a left-right lane dividing way, and a left lane is a pedestrian crossing lane from A to B, and a right lane is a pedestrian crossing lane from B to A; when a signal lamp which can be used by pedestrians is turned on, the zebra stripes are gradually projected to the position O from the two sides of the position A, B, and the left lane and the right lane are projected at the same time; in the countdown phase of the signal lamps which can be used by pedestrians, the left and right lanes cancel projection respectively; when the signal lamp which is in the next pedestrian passable state is turned on, the process is repeated.
3. The laying method of the projection type zebra stripes according to claim 2, wherein when a traffic light through which a pedestrian can pass is turned on, the control device projects stripes of the zebra stripes from both sides of the road to the vertical point O at angular velocities w1 and w2, respectively, toward an area where the zebra stripes are to be laid.
4. The laying method of the projective zebra stripes of claim 3, wherein the calculation formula of w1, w2 at the turn-on period of the traffic light through which pedestrians can pass is as follows:
w1=v1*sin2θ1/h
w2=v1*sin2θ2(d-l1)/(h*l1)
tanθ1=h/(l1-v1*t)
t1=l1/v1
v2=l2/t1
tanθ2=h/(l2-v2*t)
w1 is the angular velocity corresponding to side A, w2 is the angular velocity corresponding to side B, and h is the height of the signal lamp from the ground; a vertical line is drawn from the control device to the ground, the closer side of the intersection point is l1, and the other side is l 2; included angles formed by a connecting line of a point where the device is located and starting points of two ends of the ground and the ground are theta 1 and theta 2 respectively, wherein v1 and v2 are moving speeds of the zebra crossing light band moving from the A, B side to the vertical point O, a time variable of the zebra crossing light band moving from the two ends of the road to the vertical point O is t, the road width length is d, and l1+ l2 is d.
5. The laying method of a projective zebra stripes according to claim 1, wherein said control device does not lay the zebra stripes on the pedestrian road area during a time period in which a traffic light that is not pedestrian-passable is on.
6. The method of laying a projected zebra crossing as claimed in claim 2, wherein when a traffic light through which a pedestrian can pass enters a countdown, the light strip cancels the light strip projected to the left and right tracks at angular velocities w3, w4 from both sides of the road to the corresponding opposite sides, respectively.
7. The laying method of the projected zebra crossing as claimed in claim 6, wherein the calculation formula of w3, w4 at the signal light countdown period in which the pedestrian can pass is as follows:
w3=w31=v1*sin2(arctan(h/(l1-v1*t)))/h,l1≥v1*t,A→O
w3=w32=v1*sin2(arctan(h/(v1*t-l1)))/h,v1*t≥l1,O→B
w4=w41=v1*sin2(arctan(h/(l2-v1*t)))/h,l2≥v1*t,B→O
w4=w42=v1*sin2(arctan(h/(v1*t-l2)))/h,v1*t≥l1,O→A
wherein w3 is the angular velocity from the A side to the B side, w4 is the angular velocity from the B side to the A side,/l1-v1t/≥0,/l2-v1t/is more than or equal to 0; w31 and W32 are the angular velocities of the zebra crossing light strips from the A side to the O point and from the O point to the B side, respectively.
8. A laying system of a projection type zebra crossing is characterized by comprising a traffic signal lamp, a control device and a light band transmitting device; the control device sends signals and corresponding working instructions to the traffic signal lamp and the light band transmitting device.
9. The laying system of projected zebra stripes of claim 8, wherein said traffic lights comprise lights for vehicles and lights for pedestrians.
10. The laying system of projected zebra stripes of claim 9, wherein said light strip emitter comprises a projected zebra stripe fence and a rotatably emitting light source that projects light to the zebra stripe fence and forms a zebra stripe light strip on the road surface.
CN202010740803.6A 2020-07-29 2020-07-29 Method and system for laying projection type zebra crossing Pending CN111882891A (en)

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Publication number Priority date Publication date Assignee Title
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Application publication date: 20201103