CN210777188U - No-signal control pedestrian crossing early warning system - Google Patents
No-signal control pedestrian crossing early warning system Download PDFInfo
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- CN210777188U CN210777188U CN201921334005.2U CN201921334005U CN210777188U CN 210777188 U CN210777188 U CN 210777188U CN 201921334005 U CN201921334005 U CN 201921334005U CN 210777188 U CN210777188 U CN 210777188U
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Abstract
The application relates to the field of road traffic safety, in particular to a pedestrian crossing early warning system without signal control. The design idea of the application is as follows: when the pedestrian detection area detects that a pedestrian passes through the pedestrian crossing, the embedded intelligent road sign in the road surface automatically changes into yellow flashing, and the high-brightness indicating board displays text prompt, so that a motor vehicle driver is reminded of paying attention to the pedestrian, and a speed reduction measure is taken in advance.
Description
Technical Field
The present application relates to the field of road traffic safety.
Background
Crosswalk is a high-incidence zone of traffic accidents at non-signal control intersections and road sections, and particularly, motor vehicle drivers cannot easily see crosswalk lines and pedestrians crossing streets clearly at night and under the condition of poor visibility, and cannot take speed reduction measures in time, so that serious potential safety hazards are easily caused.
In order to solve the problem of frequent pedestrian crossing traffic accidents, the prior art mainly considers the following aspects:
firstly, white marking lines with high reflection coefficients are marked on the road surface, but the effect is not obvious under the condition of poor visibility conditions, and the marking lines are difficult to play a role in early warning after being damaged;
secondly, street lamps are arranged at the crosswalk to remind drivers of motor vehicles, but the visual stimulation effect of the conventional street lamp light on the drivers is not obvious, and the long-lighting street lamps can cause great waste of power resources at intersections and road sections with small pedestrian crossing flow;
thirdly, the light-emitting device is arranged on the pedestrian crossing line, but the warning measure is often single, and the arrangement of the light-emitting device and the light selection are not reasonable enough.
In order to make up the deficiency of the prior art, the application provides a no signal control pedestrian crossing early warning system.
Disclosure of Invention
In view of the above background, the present application aims to provide a pedestrian crossing early warning system without signal control from the perspective of road traffic safety, and aims to remind a driver of a motor vehicle to pay attention to pedestrians crossing the street in front and take a deceleration measure in advance, so that the traffic safety hidden danger at the pedestrian crossing is reduced, and the occurrence of road traffic accidents is reduced.
The design idea of the application is as follows: when the pedestrian detection area detects that a pedestrian passes through the pedestrian crossing, the embedded intelligent road sign in the road surface automatically changes into yellow flashing, and the high-brightness indicating board displays text prompt, so that a motor vehicle driver is reminded of paying attention to the pedestrian, and a speed reduction measure is taken in advance.
Technical scheme one
A pedestrian crossing early warning implementation method comprises the following steps:
s101, acquiring information such as geometric characteristics of roads at and around a pedestrian crossing, positions of fixed objects such as trees, lamp posts and the like, and providing the information to S103;
s102, determining a pedestrian detection area: the pedestrian detection area mainly comprises a pedestrian waiting area and a pedestrian crossing area, the pedestrian waiting area is arranged at two end areas of a roadside pedestrian crossing, and the pedestrian crossing area is a pedestrian crossing line area in a road;
s103, setting detection filtering conditions, including pedestrian waiting area detection filtering conditions and pedestrian crossing area detection filtering conditions:
setting the position of a fixed object in a pedestrian waiting area, detecting the conditions of the moving direction and the moving speed of a target, and eliminating the influence of the fixed objects such as trees, lamp posts and the like and the walking condition of pedestrians along the road direction;
setting triggering conditions of the moving direction and the speed of the detection target in the pedestrian crossing area, and eliminating the condition that a motor vehicle passes through;
s104, laying intelligent road signs: embedding intelligent road signs along two ends of a pedestrian crossing line, wherein the intelligent road signs are perpendicular to the pedestrian crossing line;
s105, arranging high-brightness indication boards: arranging the high-brightness indicating plate at a spatial position at the height of the pedestrian crossing to ensure that the high-brightness indicating plate is not shielded by trees and other traffic signs;
s106, laying a millimeter wave radar detection system: arranging millimeter wave radars at two ends of a roadside pedestrian crossing, outside a pedestrian detection area, wherein the coverage area of the radars comprises the whole pedestrian detection area;
and S107, laying a central control system, connecting the central control system with the intelligent road sign, the high-brightness indicating board and the millimeter wave radar detection system in a wireless communication mode to construct an early warning system, wherein when the millimeter wave radar of the early warning system detects that a pedestrian enters a pedestrian crossing area, the high-brightness indicating board at a high distance displays a character prompt of 'paying attention to the pedestrian', and meanwhile, the intelligent road sign on the road surface keeps a yellow flashing state, and the intelligent road sign and the high-brightness indicating board remind a motor vehicle to pay attention to the pedestrian.
Technical scheme two
The pedestrian crossing early warning system designed according to the technical scheme and the method is characterized by comprising a millimeter wave radar detection system, an intelligent road sign, a high-brightness indication board, a wireless communication system and a central control system, wherein,
the central control system is respectively connected with the intelligent road sign, the high-brightness indicator board and the millimeter wave radar detection system in a wireless communication mode;
the millimeter wave radar detection system is arranged at two ends of the pedestrian crossing and used for detecting whether pedestrians pass through the current pedestrian crossing. When a pedestrian is detected to pass through the pedestrian crossing, a signal is provided to the central control system.
The intelligent road signs are buried at two ends of the pedestrian crossing lines and are perpendicular to the pedestrian crossing lines, and are used for reminding motor vehicles of paying attention to the pedestrians. And when the central control system obtains a signal of a pedestrian crossing from the millimeter wave radar detection system, the intelligent road sign is controlled to keep a yellow flashing state.
The intelligent road sign is realized by selecting a buried road lamp.
The high-brightness direction board is arranged at a space position far away from the pedestrian crossing so as to ensure that the high-brightness direction board is not shielded by trees and other traffic signs. When the central control system obtains a signal of crossing the street from the millimeter wave radar detection system, the high-brightness indicating plate is controlled to display the character prompt of 'paying attention to the pedestrian' to remind the motor vehicle of paying attention to the street pedestrian.
The wireless communication system comprises a plurality of wireless communication modules which are respectively arranged in the millimeter wave radar detection system, the intelligent road sign and the central control system and are used for transmitting instruction information. Adopt wireless transmission's form between each part, can reduce the construction and the maintenance degree of difficulty that wired transmission brought, and it is comparatively convenient to adopt wireless transmission to be connected with other intelligent control systems, has reduced the degree of difficulty that the future upgrade was reformed transform.
The central control system is used for integrating all subsystems and is arranged on an intelligent control cabinet on the roadside.
The intelligent control cabinet reserves interfaces for other intelligent road systems.
The central control system is used for setting the detection range, the detection frequency and the detection object of the millimeter wave radar.
The central control system is used for controlling the on and off of the LED lamps in the intelligent road sign; used for controlling the display and the extinguishing of the characters of the high-brightness indicator board.
Compared with the prior art, the application has the advantages that:
1. on the basis of current application pedestrian crossing marking, the intelligence road sign that this application provided is through the form of yellow sudden strain of a muscle more intense to motor vehicle driver's vision stimulus, especially under the weather that night and visibility condition are not good. Meanwhile, the characters in the high-brightness indicator board are used for prompting, so that a motor vehicle driver can more clearly notice the pedestrian crossing in front, and can take speed reduction measures in time to reduce potential safety hazards.
2. The method and the device for detecting the pedestrians by the millimeter wave radar detection system have the advantages of being wide in coverage range, high in accuracy and strong in reliability. The millimeter wave radar has a large detection coverage range, the detection distance can reach 250m, and the detection visual angle can reach 120 degrees. The millimeter wave radar detection device can filter out stationary targets such as trees and light poles through a preset program. Meanwhile, the millimeter wave radar device can still work normally in environments with poor light, low visibility such as rainy days and foggy days.
3. Road surface intelligence road sign in this application adopts yellow sudden strain of a muscle form, avoids green light or red light to bring pedestrian and driver and whether can current misunderstanding. Meanwhile, the intelligent road signs on the road surface are independently installed and are convenient to construct and maintain in the later period through wireless connection.
4. The reserved interface of the central control system can be accessed to other subsystems, such as a traffic detection system, a vehicle-road cooperation system, a police service system and the like. The intelligent vehicle sensing network meets the requirement of an intelligent road, can be further developed by combining a networking technology, an internet technology, a vehicle road cooperation technology and the like, becomes an important sensing network of a V2X system, and guarantees the driving safety of the unmanned vehicle.
Drawings
FIG. 1 is a schematic diagram of a pedestrian crossing early warning system without signal control according to the present application
Detailed Description
The technical solution of the novel pedestrian crossing warning system provided by the present application is further described below with reference to the accompanying drawings, so that those skilled in the art can better understand the present application and implement the present application.
As shown in figure 1, the novel pedestrian crossing early warning system provided by the application mainly comprises a millimeter wave radar detection system, an intelligent road sign, a high-brightness indication board, a wireless communication system and a central control system.
The millimeter wave radar detection system mainly comprises a millimeter wave radar, a LoRa Internet of things communication module and a solar panel. The millimeter wave radar detection system is arranged on the roadside on one side of the pedestrian crossing. The radar detection device scans a pedestrian detection area by radar to determine whether a pedestrian passes through. The pedestrian detection area mainly includes a pedestrian waiting area and a pedestrian crossing area. The pedestrian waiting areas are arranged at two end areas of a roadside pedestrian crosswalk, the radar detection device transmits signals to the intelligent road sign when detecting the standing waiting of pedestrians, and meanwhile, the condition that the pedestrians walk along the road direction is eliminated; the pedestrian crossing area is a pedestrian crosswalk line area in a road, when the radar detection device detects that a pedestrian passes through, signals are transmitted to the intelligent road sign, and the condition that motor vehicles pass through is eliminated by presetting trigger conditions for detecting the moving direction and speed of a target. The radar detection device keeps wireless communication with the intelligent road sign system and the central control system.
As an example, the intelligent road marking device may be composed of a buried road lamp, a LoRa communication module for communicating with other subsystems within the system, and a solar panel and a battery for supplying power to the intelligent road marking device.
The buried road lamp is designed into a spike, an LED lamp group is arranged in the spike, and the flashing frequency can be adjusted to different frequencies such as 1 time/second, 2 times/second and 4 times/second according to the actual road requirement.
The LoRa communication module is used for enabling the spike to be in a single receiving mode based on a LoRa spread spectrum modulation technology; the receiving sensitivity is as high as-148 dBm, and the sight distance can reach 6-8 km in an open environment; in an actual test environment, the spike is nailed in a forest, and the communication distance is 1 kilometer without problems.
Solar panel and battery, intelligent road sign equipment adopt the mode of solar energy power supply, and the solar panel size is 80mm 35 mm. The maximum output current of the solar panel with the size is 50mA @5V, and the maximum output power is 350 mW. The 10000mAh lithium battery is adopted, and the battery has overcharge and over-discharge protection, so that the service life of the battery is effectively ensured.
The road lamps are embedded at two ends of a pedestrian crossing line on the road surface and are perpendicular to the pedestrian crossing line. The luminous form that intelligence road sign adopted yellow flashing is controlled by the signal of millimeter wave radar detection system transmission, and when no signal transmission, the way lamp keeps going out, and after receiving the signal, the way lamp begins yellow flashing, and after the signal finishes, the way lamp continues to keep putting out the state. Each street light is independent of the other, is not wired, and is in wireless communication with a central control system. The intelligent road sign on the road surface is powered by solar power.
As the embodiment, the hi-lite sign device mainly includes hi-lite sign, loRa communication module, external solar panel, and the characters luminance in the sign is higher, customizable, and loRa communication module is used for communicating with other subsystems in the system, and external solar panel is used for supplying power for the hi-lite sign device. When the millimeter wave radar detection system detects pedestrians crossing the street, the high-brightness indicating plate displays a character prompt of 'paying attention to the pedestrians' to remind the motor vehicle of paying attention to the pedestrians crossing the street; when the pedestrian passes, the characters of the high-brightness indicator stop displaying.
The communication system mainly comprises wireless communication modules which are arranged in all the subsystems, and the wireless communication modules adopt high-power communication equipment to ensure the timeliness and accuracy of information transmission among all the subsystems such as a millimeter wave radar detection system, an intelligent road sign, a high-brightness indicating board, a central control system and the like.
The central control system is used for integrating all the subsystems and is arranged in the roadside intelligent control cabinet. Meanwhile, the central control system reserves an interface, and is convenient to access other subsystems.
Compared with the prior art, the method and the device can improve the reliability, accuracy and coverage range of pedestrian detection of the pedestrian crossing; each device is connected through wireless communication and independently installed, so that construction and maintenance are facilitated; the red light or the green light is prevented from causing confusion to drivers and pedestrians in a yellow flashing mode; a subsystem interface is reserved through a central control system, so that the intelligence of a road is improved; the hidden danger of traffic accidents near pedestrian crossings in the signalless control intersections and road sections can be practically reduced, and the road traffic safety level is improved.
Claims (3)
1. A pedestrian crossing early warning system is characterized by comprising a millimeter wave radar detection system, an intelligent road sign, a high-brightness indicating board, a wireless communication system and a central control system, wherein,
the central control system is respectively connected with the intelligent road sign, the high-brightness indicator board and the millimeter wave radar detection system in a wireless communication mode;
the millimeter wave radar detection system is arranged at two ends of the pedestrian crossing and used for detecting whether a pedestrian passes through the current pedestrian crossing or not, and when the pedestrian is detected to pass through the pedestrian crossing, a signal is provided for the central control system;
the intelligent road signs are embedded at two ends of a pedestrian crossing line, and the central control system controls the intelligent road signs to keep a yellow flashing state when a signal of a pedestrian crossing the street is obtained from the millimeter wave radar detection system;
the high-brightness direction board is arranged at the high and far spatial position of the pedestrian crossing so as to ensure that the high-brightness direction board is not shielded by trees and other traffic signs, and the central control system controls the high-brightness direction board to display the character prompt of 'paying attention to pedestrians' when acquiring a signal of passing pedestrians from the millimeter wave radar detection system, and reminds a motor vehicle to pay attention to the passing pedestrians.
2. The crosswalk early warning system of claim 1, wherein the intelligent road sign is implemented by using a buried road lamp.
3. The pedestrian crossing warning system of claim 1, wherein the central control system is used for integrating subsystems and is arranged on an intelligent control cabinet at the roadside.
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| CN201921334005.2U CN210777188U (en) | 2019-08-16 | 2019-08-16 | No-signal control pedestrian crossing early warning system |
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| CN201921334005.2U CN210777188U (en) | 2019-08-16 | 2019-08-16 | No-signal control pedestrian crossing early warning system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115148017A (en) * | 2021-03-30 | 2022-10-04 | 丰田自动车株式会社 | Information processing apparatus, information processing system, information processing method, and vehicle |
| US11948451B2 (en) | 2021-02-22 | 2024-04-02 | Toyota Jidosha Kabushiki Kaisha | Information processing device, information processing system, information processing method, and display device |
| CN115148017B (en) * | 2021-03-30 | 2024-07-02 | 丰田自动车株式会社 | Information processing apparatus, information processing system, information processing method, and vehicle |
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- 2019-08-16 CN CN201921334005.2U patent/CN210777188U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11948451B2 (en) | 2021-02-22 | 2024-04-02 | Toyota Jidosha Kabushiki Kaisha | Information processing device, information processing system, information processing method, and display device |
| CN115148017A (en) * | 2021-03-30 | 2022-10-04 | 丰田自动车株式会社 | Information processing apparatus, information processing system, information processing method, and vehicle |
| US11948457B2 (en) | 2021-03-30 | 2024-04-02 | Toyota Jidosha Kabushiki Kaisha | Information processing device, information processing system, information processing method, and vehicle |
| CN115148017B (en) * | 2021-03-30 | 2024-07-02 | 丰田自动车株式会社 | Information processing apparatus, information processing system, information processing method, and vehicle |
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