A road traffic control system and traffic signal indicator light

Abstract

The present invention discloses a road traffic control system and a traffic signal indicator light, and relates to the technical field of traffic control systems. Its technical highlights include four video surveillance devices arranged on the right side of the road, which are used to monitor the road vehicle conditions in real time. The video surveillance devices use communication lines to complete communication connection with an image recognition unit. The image recognition unit processes and analyzes images. The data processed by the image recognition unit is fed back to a data processing unit. The data processing unit processes to obtain a TPI index value, and the TPI index value is fed back to a traffic light control system. The traffic light control system further controls a countdown speed adjustment program according to the TPI index value. The technical effect is that by setting multiple dispersed points, more accurate monitoring of traffic flow in a larger range of roads can be achieved, and control of the traffic light countdown speed can be achieved according to the monitored road condition information data, thereby achieving accurate regulation and control of traffic lights.

Description

Technical Field

[0001] The present invention relates to the technical field of traffic control systems, in particular to a road traffic control system and a traffic signal indicator light. Background Art

[0002] The road traffic control system is a system based on computer technology and communication technology for managing road traffic safety. Its main task is to improve the efficiency of road traffic, ensure traffic safety, and reduce the occurrence of traffic accidents. The system collects, processes, transmits and analyzes various types of traffic data to achieve a comprehensive grasp of traffic information.

[0003] The current road traffic control system, when integrating road condition information, has a single monitoring point for the overall road condition, resulting in inaccurate analysis of real-time road conditions and an inability to better coordinate traffic signal indicators, making it difficult to quickly alleviate road traffic congestion. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies of the prior art, the present invention provides a road traffic control system and a traffic signal indicator light which can effectively reduce traffic congestion.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a road traffic control system and a traffic signal indicator light, comprising four video surveillance devices arranged on the right side of the road, for real-time monitoring of road vehicle conditions, wherein the video surveillance devices use a communication line to complete a communication connection with an image recognition unit, wherein the image recognition unit processes and analyzes an image, and the data processed by the image recognition unit is fed back to a data processing unit, which processes the data to obtain a TPI index value (road congestion index), and the TPI index value is fed back to a traffic light control system, wherein the traffic light control system further controls a countdown speed adjustment program according to the TPI index value, wherein the countdown speed adjustment program is used to control the countdown speed of a countdown indicator light, and the countdown indicator light is used to adjust the light change of a traffic indicator light;

[0008] The locations of the four video surveillance devices are set as follows:

[0009] The first video surveillance device is located at the monitoring point b, and the distance L from b to the stop line of the intersection corresponding to the driving direction should satisfy: L = vt

[0010] L represents the distance between the zebra crossing and the first camera monitoring device, v represents the maximum speed limit of the lane, and t represents the last three seconds of the traffic light countdown;

[0011] The second video surveillance equipment is located at monitoring point c, the third video surveillance equipment is located at monitoring point d, and the fourth video surveillance equipment is located at monitoring point e. The intervals between b, c, d, and e are all five times of L. By setting up multiple dispersed points, the traffic status of vehicles in a wider range can be monitored, thereby achieving precise control of traffic lights, which can reliably alleviate road congestion.

[0012] Preferably, the monitoring data based on the video monitoring equipment processed by the data processing unit reflects the size of the road TPI index value, and the calculation formula of the TPI index value is: TPI = (v / V) × 100%, V represents the average speed of vehicles traveling in the lane of the road section from monitoring point b to monitoring point e. The average driving speed directly reflects the overall road congestion situation.

[0013] Preferably, the TPI index value is set by the green light control system, and a TPI index value of 0-2 represents a clear road, a TPI index value of 2-4 represents a basically clear road, a TPI index value of 4-6 represents a slightly congested road, a TPI index value of 6-8 represents a moderately congested road, and a TPI index value of 8-10 represents a severely congested road. By obtaining more accurate TPI index values, precise control of traffic flow can be achieved.

[0014] Preferably, n and s are set by the traffic light control system (it should be noted that: n is the starting value of the countdown, and s is the standard countdown speed, that is, each reading is 1 second). When the TPI index value is 0-2, the countdown speed adjustment program controls the countdown speed of the countdown indicator light to be s. When the TPI index value is 2-4, the countdown speed adjustment program controls the countdown speed of the countdown indicator light between n and m to be 0.9s. When the TPI index value is 4-6, the countdown speed adjustment program controls the countdown speed of the countdown indicator light between n and m to be 0.8s. When the TPI index value is 6-8, the countdown speed adjustment program controls the countdown speed of the countdown indicator light between n and m to be 0.7s. When the TPI index value is 8-10, the countdown speed adjustment program controls the countdown speed of the countdown indicator light between n and m to be 0.6s. The accurate TPI index value obtained by monitoring is used to match the corresponding countdown speed, so that the congested lane can obtain a longer travel time, thereby achieving the purpose of accurately alleviating road congestion and improving the overall traffic efficiency of the lane;

[0015] m is the normal passage protection time reserved for pedestrians. The countdown speed of the countdown indicator light for the last m seconds is s, ensuring that pedestrians can pass normally and safely, improving the passage efficiency while protecting the safety of pedestrians.

[0016] Preferably, it includes a traffic light group, wherein a display area 1 is arranged at the lower inner side of the traffic light group, a display area 2 is arranged at the middle inner side of the traffic light group, a central control box is installed at the upper inner side of the traffic light group, a crossbeam frame is installed at the upper side of one side of the traffic light group, a traffic indicator light is installed at one end of the crossbeam frame, and an indicator countdown light is installed at the other end of the crossbeam frame.

[0017] Preferably, the display area 1 is used to display road name information, the display area 2 is used to display the speed limit sign of the road, and the indicator countdown light is used for countdown prompts.

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the present invention provides a road traffic control system and a traffic signal indicator light, which have the following beneficial effects: by setting a plurality of dispersed points, more accurate monitoring of the traffic flow in a larger range of roads can be achieved, and the countdown speed of traffic lights can be controlled according to the monitored road condition information data, thereby realizing accurate regulation of traffic lights, achieving the purpose of alleviating road congestion, and reserving safe passage time for pedestrians. The setting position of the first monitoring point can reserve sufficient emergency braking distance for vehicles during regulation to ensure driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A flow chart showing the traffic control system of the present invention;

[0021] Figure 2 A road distribution display diagram of the present invention;

[0022] Figure 3 This is a flowchart of the control process of the indicator countdown light in the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the traffic signal light group of the present invention.

[0024] In the figure: 1. Traffic signal light group; 11. Display area 1; 12. Display area 2; 13. Central control box; 14. Crossbeam frame; 15. Indicator countdown light; 16. Pass indicator light. DETAILED DESCRIPTION

[0025] In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0026] See also Figure 1-4The present invention provides a technical solution for a road traffic control system and a traffic signal indicator light:

[0027] Embodiment 1, a road traffic control system and a traffic signal indicator light, comprising four video surveillance devices arranged on the right side of the road, for real-time monitoring of road vehicle conditions, the video surveillance devices using a communication line to complete communication connection with an image recognition unit, the image recognition unit processes and analyzes the image, the data processed by the image recognition unit is fed back to a data processing unit, the data processing unit processes to obtain a TPI index value (road congestion index), the TPI index value is fed back to a traffic light control system, the traffic light control system further controls a countdown speed adjustment program according to the TPI index value, the countdown speed adjustment program is used to control the countdown speed of the countdown indicator light, and the countdown indicator light is used to adjust the light change of the traffic indicator light;

[0028] The locations of the four video surveillance devices are set as follows:

[0029] The first video surveillance device is located at the monitoring point b, and the distance L from b to the stop line of the intersection corresponding to the driving direction should satisfy: L = vt

[0030] L represents the distance between the zebra crossing and the first camera monitoring device, v represents the maximum speed limit of the lane, and t represents the last three seconds of the traffic light countdown;

[0031] The second video surveillance device is located at monitoring point c, the third video surveillance device is located at monitoring point d, and the fourth video surveillance device is located at monitoring point e. The intervals between the above b, c, d, and e are all five times L. By setting multiple dispersed points, more accurate monitoring of traffic flow in a larger road range can be achieved, and more accurate information data can be obtained, thereby achieving accurate control of traffic lights, which can reliably alleviate road congestion.

[0032] The monitoring data based on the video surveillance equipment processed by the data processing unit reflects the size of the road TPI index value. The calculation formula of the TPI index value is: TPI = (v / V) × 100%, V represents the average speed of vehicles traveling in the lane of the road section from monitoring point b to monitoring point e. A more accurate TPI index value can be obtained from the detection data, which is convenient for subsequent more accurate control of the countdown speed;

[0033] The TPI index value is set through the green light control system. The TPI index value is 0-2, which means the road is unobstructed. The TPI index value is 2-4, which means the road is basically unobstructed. The TPI index value is 4-6, which means the road is slightly congested. The TPI index value is 6-8, which means the road is moderately congested. The TPI index value is 8-10, which means the road is severely congested. By obtaining more accurate TPI index values, the traffic flow can be precisely controlled.

[0034] n and s are set by the traffic light control system (it should be noted that n is the starting value of the countdown, and s is the standard countdown speed, i.e., each reading is 1 second). When the TPI index value is 0-2, the countdown speed adjustment program controls the countdown speed of the countdown indicator light to be s. When the TPI index value is 2-4, the countdown speed adjustment program controls the countdown speed of the countdown indicator light between n and m to be 0.9s. When the TPI index value is 4-6, the countdown speed adjustment program controls the countdown speed of the countdown indicator light between n and m to be 0.8s. When the TPI index value is 6-8, the countdown speed adjustment program controls the countdown speed of the countdown indicator light between n and m to be 0.7s. When the TPI index value is 8-10, the countdown speed adjustment program controls the countdown speed of the countdown indicator light between n and m to be 0.6s. The obtained TPI index value is used to realize the regulation of the subsequent countdown speed, which can provide a longer travel time for the congested direction and effectively alleviate the road congestion. The conventional coordination method is adopted between the traffic indicator lights at the same intersection, which will not be repeated here.

[0035] m is the normal passage protection time reserved for pedestrians. The countdown speed of the last m seconds of the countdown indicator light is s, ensuring that pedestrians can pass normally and safely. While improving the passage efficiency, the safety of pedestrians is protected. The specific values ​​of m and n can be set according to the road width.

[0036] Embodiment 2 includes a traffic light group 1, wherein a display area 11 is provided at the lower inner side of the traffic light group 1, a display area 2 12 is provided at the middle inner side of the traffic light group 1, a central control box 13 is installed at the upper inner side of the traffic light group 1, an image recognition unit, a data processing unit and a traffic light control system are all controlled and processed by the central control box 13, a countdown speed adjustment program is a control program in the traffic light control system, a crossbeam frame 14 is installed at the upper side of one side of the traffic light group 1, a traffic indicator light 16 is installed at one end of the crossbeam frame 14, and an indication countdown light 15 is installed at the other end of the crossbeam frame 14, the display area 11 is used to display road name information, the display area 2 12 is used to display the speed limit sign of the road, and the indication countdown light 15 is used for countdown prompts.

[0037] When used specifically, the present invention is used as a road traffic control system and traffic signal indicator light. When vehicles are traveling on the road, the road traffic scene is monitored by a video surveillance device installed beside the road, and the video is transmitted to the central control box 13 via a communication line. The image recognition unit and the data processing unit recognize and process the video, and the TPI index value is obtained by calculation. Combined with the TPI index value, the traffic light control system sends a countdown speed instruction to the countdown program, thereby completing the countdown speed control of the countdown indicator light 15, thereby achieving precise control of road traffic.

[0038] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A road traffic control system, characterized in that: It includes four video surveillance devices arranged on the right side of the road, which are used to monitor the road vehicle situation in real time. The video surveillance devices use communication lines to complete communication connection with the image recognition unit. The image recognition unit processes and analyzes the image. The data processed by the image recognition unit is fed back to the data processing unit. The data processing unit processes to obtain a TPI index value (road congestion index). The TPI index value is fed back to the traffic light control system. The traffic light control system further controls the countdown speed adjustment program according to the TPI index value. The countdown speed adjustment program is used to control the countdown speed of the countdown indicator light. The countdown indicator light is used to adjust the light change of the traffic indicator light. The locations of the four video surveillance devices are set as follows: The first video surveillance device is located at the monitoring point b, and the distance L from b to the stop line of the intersection corresponding to the driving direction should satisfy: L=vt L represents the distance between the zebra crossing and the first camera monitoring device, v represents the maximum speed limit of the lane, and t represents the last three seconds of the traffic light countdown; The second video surveillance device is located at monitoring point c, the third video surveillance device is located at monitoring point d, and the fourth video surveillance device is located at monitoring point e. The intervals between b, c, d, and e are all five times L; The monitoring data based on the camera monitoring device processed by the data processing unit reflects the size of the road TPI index value, and the calculation formula of the TPI index value is: TPI=(v / V)×100%, where V represents the average speed of vehicles traveling in the lane of the road section from monitoring point b to monitoring point e; The TPI index value is set by the green light control system. The TPI index value is 0-2, which means that the road is unobstructed. The TPI index value is 2-4, which means that the road is basically unobstructed. The TPI index value is 4-6, which means that the road is slightly congested. The TPI index value is 6-8, which means that the road is moderately congested. The TPI index value is 8-10, which means that the road is severely congested. By obtaining more accurate TPI index values, accurate control of traffic flow can be achieved; n and s are set by the traffic light control system (it should be noted that n is the starting value of the countdown, and s is the standard countdown speed, i.e., each reading is 1 second). When the TPI index value is 0-2, the countdown speed adjustment program controls the countdown speed of the countdown indicator light to be s. When the TPI index value is 2-4, the countdown speed adjustment program controls the countdown speed of the countdown indicator light between n and m to be 0.9s. When the TPI index value is 4-6, the countdown speed adjustment program controls the countdown speed of the countdown indicator light between n and m to be 0.8s. When the TPI index value is 6-8, the countdown speed adjustment program controls the countdown speed of the countdown indicator light between n and m to be 0.7s. When the TPI index value is 8-10, the countdown speed adjustment program controls the countdown speed of the countdown indicator light between n and m to be 0.6s. m is the normal passage protection time reserved for pedestrians. The countdown speed of the countdown indicator light for the last m seconds is s, ensuring that pedestrians can pass normally and safely, improving the passage efficiency while protecting the safety of pedestrians.

Images