A vehicle flow control system and method based on edge computing

Abstract

The application provides a kind of traffic control system and method based on edge computing.The system comprises: first camera;First edge computing system, the mood state of driver in the image of vehicle photographed by first camera is identified, the mood state of driver near first intersection is obtained;N second cameras, each second camera is used to photograph the image of vehicle driving towards the second intersection where it is located;N second edge computing systems, the mood state of driver in the image of vehicle photographed by the second camera connected to each second edge computing system is identified, the mood state of driver near corresponding second intersection is obtained;First edge computing system determines the switching strategy of signal lamp of first intersection according to the mood state of driver near first intersection and the mood state of driver near corresponding second intersection obtained by N second edge computing systems, and sends the switching strategy of signal lamp of first intersection to signal lamp control center.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of edge computing, and particularly relates to a vehicle flow control system and method based on edge computing. BACKGROUND

[0002] In the prior art, the management and control of intersection signal lights is often achieved by the following way. For example, fixed rules are set for the signal lights, and the switching of the no-entry signal light (such as a red light) and the passing signal light (such as a green light) is switched according to the rules.

[0003] Therefore, there is an urgent need for a technology capable of timely managing and controlling the intersection signal light according to the emotional state of the driver. SUMMARY

[0004] The present application provides a vehicle flow control system and method based on edge computing.

[0005] Other features and advantages of the present application will be further described in the following specification, and some will become apparent from the specification, or will be learned by practice of the present application. The objects and other advantages of the present application can be achieved and obtained by the structure particularly pointed out in the written specification, claims, and drawings.

[0006] The technical solutions of the present application will be further described in detail below with the help of the drawings and examples. BRIEF DESCRIPTION OF DRAWINGS

[0007] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, and are used together with the embodiments of the present application to explain the present application, and do not constitute a limitation on the present application. In the drawings:

[0008] Figure 1 FIG. 1 is a schematic diagram of a vehicle flow control system based on edge computing in an embodiment of the present application. DETAILED DESCRIPTION

[0009] The preferred embodiments of the present application will be described below in combination with the drawings, and it should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application, and do not constitute a limitation on the present application.

[0010] The present application provides a vehicle flow control system based on edge computing, as shown in FIG. 1, which comprises: Figure 1

[0011] A first camera 14 is arranged on a signal light support rod 12 of a first intersection 11, and is used to shoot images of vehicles driving towards the first intersection 11;

[0012] ​The first edge computing system 13 is arranged on the signal lamp support rod 12 of the first intersection 11 and is in data connection with the first camera 14, and is configured to identify the emotional state of the driver in the image of the vehicle captured by the first camera 14 to obtain the emotional state of the driver near the first intersection 11.

[0013] The N second cameras 24 are arranged on the signal lamp support rods 21 of the N second intersections 22, and the N second intersections 22 are N intersections (for example, as shown by the dotted arrows, the second intersections are towards the first intersection) in the driving direction of the road and are continuous to the first intersection 11; each second camera 24 is configured to capture the image of the vehicle driving towards the second intersection 22 where the second camera 24 is arranged. Figure 1

[0014] The N second edge computing systems 23 are arranged on the signal lamp support rods 21 of the N second intersections 22 and are in data connection with the second cameras 24 arranged on the signal lamp support rods 21; each second edge computing system 23 is configured to identify the emotional state of the driver in the image of the vehicle captured by the second camera 24 connected to the second edge computing system 23 to obtain the emotional state of the driver near the corresponding second intersection 22.

[0015] The first edge computing system 13 is further configured to determine the switching strategy of the signal lamp of the first intersection 11 according to the emotional state of the driver near the first intersection 11 and the emotional state of the driver near the corresponding second intersection 22 obtained by the N second edge computing systems 23, and perform a preset operation according to the switching strategy of the signal lamp of the first intersection 11, and the preset operation includes: sending the switching strategy of the signal lamp of the first intersection 11 to a signal lamp control center (not shown in the figure) or controlling the signal lamp of the first intersection 11 to change according to the switching strategy of the signal lamp of the first intersection 11.

[0016] The technical scheme has the beneficial effects that: in the technical scheme, an edge computing system is arranged at each intersection, the emotional state of the driver near the intersection is analyzed in time by the edge computing system, the switching strategy of the signal lamp of the intersection is generated quickly, a preset operation is performed according to the switching strategy of the signal lamp of the first intersection 11, the preset operation can be: sending the switching strategy to the signal lamp control center for reference of the signal lamp control center in changing the signal lamp of the intersection; or directly controlling the signal lamp of the first intersection 11 to change according to the switching strategy of the signal lamp of the first intersection 11; and the technical scheme can reduce the probability of occurrence of road rage.

[0017] ​In an embodiment, the determining of the switching strategy of the signal light of the first intersection according to the emotional state of the driver near the first intersection and the emotional state of the driver near each of the N second intersections obtained by the N second edge computing systems comprises:

[0018] According to the emotional state of the driver near the first intersection, a first proportion of drivers with the preset emotional state among all drivers near the first intersection is counted, wherein the preset emotional state is any one or more of anxious, angry, and sad.

[0019] According to the emotional state of the driver near each of the N second intersections obtained by the N second edge computing systems, a second proportion of drivers with the preset emotional state among all drivers near each of the N second intersections is counted.

[0020] The switching strategy of the signal light of the first intersection is determined according to the first proportion and the second proportion corresponding to each of the N second intersections.

[0021] In an embodiment, the determining of the switching strategy of the signal light of the first intersection according to the first proportion and the second proportion corresponding to each of the N second intersections comprises:

[0022] The N second intersections and the first intersection are sequentially arranged in the order of road segment connection to obtain an intersection sequence (wherein the order of road segment connection refers to the order of connection of road segments along the driving direction of vehicles).

[0023] The first proportion and the second proportion corresponding to each of the N second intersections are sequentially arranged in the order of intersections in the intersection sequence.

[0024] It is determined whether a change rule of the sequentially arranged first proportion and the second proportion corresponding to each of the N second intersections meets a preset change rule suitable for fast traffic, wherein in an embodiment, the preset change rule suitable for fast traffic comprises that the value of the proportion arranged later is greater than the value of the proportion arranged earlier (indicating that a large number of drivers have begun to appear in an emotional unstable state, and the proportion of such state is increasing).

[0025] If the change rule of the sequentially arranged first proportion and the second proportion corresponding to each of the N second intersections meets the preset change rule suitable for fast traffic, it is determined whether the signal light currently opened at the first intersection is a no-go signal light or a go signal light; if the signal light currently opened at the first intersection is a no-go signal light, it is determined that the switching strategy of the signal light of the first intersection is to open a go signal light; if the signal light currently opened at the first intersection is a go signal light, it is determined that the switching strategy of the signal light of the first intersection is to continue to maintain the go signal light.

[0026] In one embodiment, if the change rule of the first proportion and the respective second proportions of the N second intersections in the sequential arrangement does not satisfy the preset change rule suitable for fast passing, it is determined whether the signal lamp currently opened at the first intersection is a no-passing signal lamp or a passing signal lamp; if the signal lamp currently opened at the first intersection is a no-passing signal lamp, it is determined that the switching strategy of the signal lamp at the first intersection is to continue to keep the no-passing signal lamp; if the signal lamp currently opened at the first intersection is a passing signal lamp, it is determined that the switching strategy of the signal lamp at the first intersection is to start a no-passing signal lamp.

[0027] In one embodiment, when the first proportion is equal to or greater than a preset proportion threshold, if the signal lamp currently opened at the first intersection is a no-passing signal lamp, it is determined that the switching strategy of the signal lamp at the first intersection is to open a passing signal lamp, and the first edge computing system is further configured to send a driver calming prompt to the signal lamp control center at the same time as sending the switching strategy of the signal lamp at the first intersection to the signal lamp control center.

[0028] The background control center is configured to control the display of information for calming the driver's emotions on the prompt screen at the first intersection after receiving the switching strategy of the signal lamp at the first intersection sent by the first edge computing system.

[0029] The above technical solution has the beneficial effect that the background control center can display information for calming the driver's emotions on the prompt screen at the first intersection in a timely manner when the driver's emotions are unstable, and the information, such as calming information such as “a passing signal lamp will be opened soon, please be patient”, can alleviate the driver's emotions to some extent and achieve the purpose of reducing road rage.

[0030] Corresponding to the foregoing method provided by the embodiments of the present application, the embodiments of the present application also provide a vehicle flow control method based on edge computing, comprising:

[0031] A first camera arranged on a signal lamp support rod at a first intersection captures images of vehicles driving toward the first intersection;

[0032] A first edge computing system arranged on the signal lamp support rod at the first intersection identifies the emotional state of a driver in the images of vehicles captured by the first camera to obtain the emotional state of the driver near the first intersection;

[0033] Each of N second cameras arranged on signal lamp support rods at N second intersections respectively captures images of vehicles driving toward the second intersection where the second camera is located, wherein the N second intersections are consecutive N intersections in the driving direction of the road toward the first intersection;

[0034] Each of the N second edge computing systems arranged on the signal lamp support rods of the N second intersections respectively, identifies the emotional state of the driver in the image of the vehicle captured by the second camera connected thereto, and obtains the emotional state of the driver near the corresponding second intersection;

[0035] The first edge computing system determines the switching strategy of the signal lamp of the first intersection according to the emotional state of the driver near the first intersection and the emotional state of the driver near the corresponding second intersection obtained by each of the N second edge computing systems, and sends the switching strategy of the signal lamp of the first intersection to the signal lamp control center.

[0036] In one embodiment, the determination of the switching strategy of the signal lamp of the first intersection according to the emotional state of the driver near the first intersection and the emotional state of the driver near the corresponding second intersection obtained by each of the N second edge computing systems comprises:

[0037] According to the emotional state of the driver near the first intersection, the first proportion of the driver with the preset emotional state in the emotional state of all drivers near the first intersection is counted; the preset emotional state is any one or more of anxious, angry, and sad;

[0038] According to the emotional state of the driver near the corresponding second intersection obtained by each of the N second edge computing systems, the second proportion of the driver with the preset emotional state in the emotional state of all drivers near each second intersection is counted;

[0039] According to the first proportion and the second proportion corresponding to each of the N second intersections, the switching strategy of the signal lamp of the first intersection is determined.

[0040] In one embodiment, the determination of the switching strategy of the signal lamp of the first intersection according to the first proportion and the second proportion corresponding to each of the N second intersections comprises:

[0041] The N second intersections and the first intersection are sequentially arranged in the order of connection of road sections to obtain a sequence of intersections;

[0042] The first proportion and the second proportion corresponding to each of the N second intersections are sequentially arranged in the order of the intersections in the sequence of intersections;

[0043] It is judged whether the change rule of the sequentially arranged first proportion and the second proportion corresponding to each of the N second intersections meets the preset change rule suitable for fast traffic;

[0044] If the change rule of the first proportion and the second proportions corresponding to the N second intersections in the sequential arrangement meets a preset change rule suitable for fast passing, it is determined whether the signal lamp currently opened at the first intersection is a no-passing signal lamp or a passing signal lamp; if the signal lamp currently opened at the first intersection is a no-passing signal lamp, it is determined that the opening and closing strategy of the signal lamp at the first intersection is to open a passing signal lamp; if the signal lamp currently opened at the first intersection is a passing signal lamp, it is determined that the opening and closing strategy of the signal lamp at the first intersection is to continue to maintain the passing signal lamp.

[0045] The preset change rule suitable for fast passing includes that the proportion arranged at the back is greater than the proportion arranged at the front.

[0046] Obviously, various modifications and changes can be made to the present application by those skilled in the art without departing from the spirit and scope of the present application. Thus, it is intended that the present application cover the modifications and changes as long as they come within the scope of the claims and their equivalents.

Claims

1. An edge-computing-based traffic flow control system, characterized by, The system comprises: a first camera arranged on a signal lamp support rod of a first intersection, and configured to capture images of vehicles driving towards the first intersection; a first edge computing system arranged on the signal lamp support rod of the first intersection, and connected with the first camera, and configured to identify the emotional state of a driver in the images of the vehicles captured by the first camera, and obtain the emotional state of the driver near the first intersection; N second cameras arranged on signal lamp support rods of N second intersections respectively, the N second intersections being consecutive intersections in a driving direction of a road towards the first intersection, and each second camera being configured to capture images of vehicles driving towards the second intersection where the second camera is arranged; N second edge computing systems arranged on the signal lamp support rods of the N second intersections respectively, and connected with the second cameras arranged on the signal lamp support rods where the second edge computing systems are arranged; and each second edge computing system being configured to identify the emotional state of a driver in the images of the vehicles captured by the second camera connected with the second edge computing system, and obtain the emotional state of the driver near the corresponding second intersection; the first edge computing system is further configured to determine a switching strategy of a signal lamp of the first intersection according to the emotional state of the driver near the first intersection and the emotional states of the drivers near the corresponding second intersections obtained by the N second edge computing systems respectively, and perform a preset operation according to the switching strategy of the signal lamp of the first intersection, the preset operation including: sending the switching strategy of the signal lamp of the first intersection to a signal lamp control center, or controlling the signal lamp of the first intersection to change according to the switching strategy of the signal lamp of the first intersection.

2. The system of claim 1, wherein the determination of the switching strategy of the signal lamp of the first intersection according to the emotional state of the driver near the first intersection and the emotional states of the drivers near the corresponding second intersections obtained by the N second edge computing systems respectively includes: statistically determining a first proportion of drivers with a preset emotional state among all drivers near the first intersection according to the emotional state of the driver near the first intersection, the preset emotional state being any one or more of anxious, angry, and sad; statistically determining a second proportion of drivers with the preset emotional state among all drivers near each second intersection according to the emotional states of the drivers near the corresponding second intersections obtained by the N second edge computing systems respectively; determining the switching strategy of the signal lamp of the first intersection according to the first proportion and the second proportions corresponding to the N second intersections respectively.

3. The system of claim 2, wherein the determination of the switching strategy of the signal lamp of the first intersection according to the first proportion and the second proportions corresponding to the N second intersections respectively includes: arranging the N second intersections and the first intersection in sequence according to a connection order of road sections to obtain an intersection sequence; arranging the first proportion and the second proportions corresponding to the N second intersections in sequence according to an order of intersections in the intersection sequence. determine whether the change rule of the first proportion and the second proportions corresponding to the N second intersections meets a preset change rule of suitable fast traffic; if the change rule of the first proportion and the second proportions corresponding to the N second intersections meets the preset change rule of suitable fast traffic, determine whether the signal lamp currently opened at the first intersection is a no-go signal lamp or a go signal lamp; if the signal lamp currently opened at the first intersection is a no-go signal lamp, determine that the switching strategy of the signal lamp at the first intersection is to open a go signal lamp; if the signal lamp currently opened at the first intersection is a go signal lamp, determine that the switching strategy of the signal lamp at the first intersection is to continue to maintain the go signal lamp.

4. The system of claim 3, wherein if the change rule of the first proportion and the second proportions corresponding to the N second intersections does not meet the preset change rule of suitable fast traffic, determine whether the signal lamp currently opened at the first intersection is a no-go signal lamp or a go signal lamp; if the signal lamp currently opened at the first intersection is a no-go signal lamp, determine that the switching strategy of the signal lamp at the first intersection is to continue to maintain the no-go signal lamp; if the signal lamp currently opened at the first intersection is a go signal lamp, determine that the switching strategy of the signal lamp at the first intersection is to start a no-go signal lamp.

5. The system of claim 3, wherein the preset change rule of suitable fast traffic comprises: the proportion arranged later is greater than the proportion arranged earlier.

6. The system of claim 3, wherein when the first proportion is equal to or greater than a preset proportion threshold, if the signal lamp currently opened at the first intersection is a no-go signal lamp, determine that the switching strategy of the signal lamp at the first intersection is to open a go signal lamp, and the first edge computing system is further configured to send a driver calming prompt to a signal lamp control center at the same time as sending the switching strategy of the signal lamp at the first intersection to the signal lamp control center; a background control center configured to control a prompt screen at the first intersection to display information for calming the driver's emotions after receiving the switching strategy of the signal lamp at the first intersection sent by the first edge computing system.

7. A traffic flow control method based on edge computing, characterized by, comprise: a first camera arranged on a signal lamp support rod at the first intersection, configured to capture images of vehicles driving towards the first intersection; a first edge computing system arranged on the signal lamp support rod at the first intersection, configured to identify the emotional state of a driver in the images of vehicles captured by the first camera to obtain the emotional state of the driver near the first intersection; N second cameras arranged on signal lamp support rods at N second intersections respectively, each of the N second cameras being configured to capture images of vehicles driving towards the second intersection at which the second camera is arranged, wherein the N second intersections are consecutive intersections in a road driving direction towards the first intersection. Each of the N second edge computing systems arranged on the signal lamp support rods of the N second intersections respectively, identifies the emotional state of the driver in the image of the vehicle captured by the second camera connected thereto, and obtains the emotional state of the driver near the corresponding second intersection; The first edge computing system determines the switching strategy of the signal lamp of the first intersection according to the emotional state of the driver near the first intersection and the emotional state of the driver near each of the N second intersections obtained by the N second edge computing systems respectively, and performs a preset operation according to the switching strategy of the signal lamp of the first intersection. The preset operation includes: sending the switching strategy of the signal lamp of the first intersection to a signal lamp control center, or controlling the signal lamp of the first intersection to change according to the switching strategy of the signal lamp of the first intersection.

8. The method of claim 7, wherein The determination of the switching strategy of the signal lamp of the first intersection according to the emotional state of the driver near the first intersection and the emotional state of the driver near each of the N second intersections obtained by the N second edge computing systems respectively comprises: According to the emotional state of the driver near the first intersection, a first proportion of drivers with a preset emotional state among all drivers near the first intersection is counted. The preset emotional state is any one or more of anxious, angry, and sad. According to the emotional state of the driver near each of the N second intersections obtained by the N second edge computing systems respectively, a second proportion of drivers with the preset emotional state among all drivers near each of the N second intersections is counted. The switching strategy of the signal lamp of the first intersection is determined according to the first proportion and the second proportion corresponding to each of the N second intersections.

9. The method of claim 8, wherein The determination of the switching strategy of the signal lamp of the first intersection according to the first proportion and the second proportion corresponding to each of the N second intersections comprises: The N second intersections and the first intersection are sequentially arranged in order of connection sequence to obtain an intersection sequence. The first proportion and the second proportion corresponding to each of the N second intersections are sequentially arranged in order of the intersections in the intersection sequence. It is determined whether a change rule of the sequentially arranged first proportion and the second proportion corresponding to each of the N second intersections meets a preset change rule suitable for fast traffic. If the change rule of the sequentially arranged first proportion and the second proportion corresponding to each of the N second intersections meets the preset change rule suitable for fast traffic, it is determined whether the currently opened signal lamp of the first intersection is a no-go signal lamp or a go signal lamp. If the currently opened signal lamp of the first intersection is a no-go signal lamp, the switching strategy of the signal lamp of the first intersection is determined to be opening a go signal lamp. If the currently opened signal lamp of the first intersection is a go signal lamp, the switching strategy of the signal lamp of the first intersection is determined to continue to maintain the go signal lamp. The preset change rule suitable for fast traffic includes that the proportion arranged later is greater than the proportion arranged earlier.

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