CN113034896B - Signal traffic system based on time compensation - Google Patents
Signal traffic system based on time compensation Download PDFInfo
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- G08G1/00—Traffic control systems for road vehicles
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- G08G1/0125—Traffic data processing
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- G08G1/00—Traffic control systems for road vehicles
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- G08G—TRAFFIC CONTROL SYSTEMS
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Abstract
The invention relates to the technical field of intelligent traffic, in particular to a signal traffic system based on time compensation, which comprises an identification subsystem, a dynamic traffic signal subsystem, an integral variation subsystem and a time compensation supply subsystem, wherein the identification subsystem is used for identifying behavior information, identity information and integral information of at least one target pedestrian; the integral change subsystem is used for changing the integral information according to the behavior information; the time compensation provision subsystem is configured to: receiving request information of at least one target pedestrian; judging whether the integral information of at least one target pedestrian reaches a preset integral limit value, and if so, sending the request information to a dynamic traffic signal subsystem; and the dynamic traffic signal subsystem is used for adjusting the distribution time length of the signal lamp according to the received request information. The invention provides a signal traffic system based on time compensation, which solves the problem that the signal lamp distribution time is unreasonable in the existing signal traffic system.
Description
Technical Field
The invention relates to the technical field of intelligent traffic, in particular to a signal traffic system based on time compensation.
Background
In the process of vigorously promoting urbanization in China, the automobile industry develops at a high speed, the supply pressure of traffic resources is aggravated by the development of urbanization, more and more vehicles and people enable the interaction between pedestrians and vehicles to become frequent, and the interaction also causes more unfamiliar traffic phenomena.
Under the current social background, the pace of life of urban residents is continuously accelerated, the time pressure of the urban residents is higher and higher, and the time demand is more and more urgent, so that when the urban residents cross the street as pedestrians, the urban residents are likely to cross the street in order to save the time of crossing the street. The phenomenon that pedestrians cross the road in disorder continuously influences the traffic order of the city, threatens the street crossing safety of the pedestrians, influences the traffic efficiency of vehicles, makes the congestion phenomenon of urban traffic more serious, greatly improves the possibility of traffic accidents and causes huge economic loss. The traffic control is difficult due to the fact that the unequivocal pedestrians cross the street, and related management departments have to invest more manpower, material resources and financial resources to manage the traffic, so that the traffic management cost is increased, and negative effects are generated on the good development of national economy.
The traffic light time of the existing signal traffic system is fixed and unchanged, the requirements of pedestrians are not considered, and a large number of non-civilized behaviors are caused.
Disclosure of Invention
The invention provides a signal traffic system based on time compensation, which aims to solve the problem that the signal lamp distribution time is unreasonable in the conventional signal traffic system.
The technical scheme for solving the problems is as follows: a signal traffic system based on time compensation comprises an identification subsystem, a dynamic traffic signal subsystem, an integral variation subsystem and a time compensation supply subsystem, wherein
The identification subsystem is used for identifying behavior information, identity information and integral information of at least one target pedestrian;
the integral change subsystem is used for changing the integral information according to the behavior information;
the time compensation provision subsystem is configured to: receiving request information of at least one target pedestrian; judging whether the integral information of at least one target pedestrian reaches a preset integral limit value, and if so, sending request information to the dynamic traffic signal subsystem;
and the dynamic traffic signal subsystem is used for adjusting the distribution time length of the signal lamp according to the received request information.
Preferably, the predetermined integral limit value is calculated by the formula
Wherein, the
Is the average of the w parameters of all target pedestrians who send the request information to the time compensation supply subsystem during the period; and Q is a preset numerical value corresponding to the traffic flow of the road section.
Preferably, the recognition subsystem comprises an image recognition analysis module configured to:
analyzing and mining the collected information including the target pedestrian to obtain behavior information, identity information and integral information of the target pedestrian;
and judging whether the behavior information of the target pedestrian is matched with the preset behavior characteristic information.
Preferably, the identification subsystem further comprises one or more of a road fixed shooting device, a remote face identification device, a pedestrian body feature correlation device and an IC card sensing device.
Preferably, the time compensation supply sub-system includes a reception request module and an integrated value judgment module.
Preferably, the time compensation supply subsystem further comprises a time compensation pedestrian application facility.
Preferably, the dynamic traffic signal subsystem includes a time compensation command transferring module and a signal lamp module, wherein:
the time compensation instruction transferring module controls the display of the signal lamp module;
the signal lamp module comprises a fixed signal red lamp, a dynamic signal red lamp and a fixed signal green lamp;
and the time compensation instruction transferring module is used for converting the red light of the dynamic signal into the green light of the fixed signal when receiving the request information sent by the time compensation supply subsystem.
Preferably, the dynamic traffic signal subsystem includes a first determining module, where the first determining module is configured to determine whether the red light of the fixed signal is on when the request message is received, and if so, change the red light of the dynamic signal to a green light of the fixed signal.
Compared with the prior art, the invention has the beneficial effects that:
1) according to the invention, the traffic light time is reasonably distributed, the violation rate of pedestrians is reduced, and the safety of pedestrian crossing is improved.
2) The invention can accurately and efficiently identify the street crossing behavior of the pedestrian and the identity of the pedestrian. Because the invention combines the identification technology (face identification, body characteristic identification and the like) aiming at the identity of the pedestrian and the IC card identification induction technology of the pedestrian, the mining analysis and the induction identification of the identity information and the behavior information of the pedestrian can become accurate and have higher efficiency, the identity information and the street crossing behavior of the pedestrian can be well identified, and the subsequent change processing of the street crossing civilization integral of the pedestrian is convenient.
3) The invention ensures that the vehicle runs more smoothly, reduces traffic jam and improves the running efficiency of the whole road traffic system.
4) The invention adopts a credit integral reward and punishment mechanism, not only saves the waiting time when the pedestrian crosses the street on the legal premise, but also restrains the uneconomical street crossing behavior of the pedestrian.
Drawings
Fig. 1 is a structural frame diagram of the present invention.
FIG. 2 is a schematic flow diagram of the present invention.
FIG. 3 is a schematic diagram of the operation of the time signal module of the present invention;
in the figure: 10-a dynamic traffic signal subsystem, 11-a signal lamp module, 111-a fixed signal red lamp, 112-a dynamic signal red lamp, 113-a fixed signal green lamp, 12-a time compensation instruction transferring module, 20-an identification subsystem, 21-a road fixed shooting device, 22-a remote face identification device, 23-a pedestrian body characteristic correlation device, 24-an IC card sensing device, 30-an integral variation subsystem, 40-a time compensation supply subsystem, 41-a time compensation pedestrian application facility and 42-an integral value judgment module.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
Example 1: referring to fig. 1, a signal traffic system based on time compensation includes a dynamic traffic signal subsystem 10, an identification subsystem 20, an integral variation subsystem 30, and a time compensation supply subsystem 40.
(1) Dynamic traffic signal subsystem 10
The dynamic traffic signal subsystem 10 provides time compensation for pedestrians who meet the street culture integration requirements, primarily through dynamic setting of traffic lights. To achieve dynamic adjustment of the signal lights, the signal light module 11 of the dynamic traffic signal subsystem 10 includes a fixed signal red light 111, a dynamic signal red light 112, and a fixed signal green light 113. The time compensation effect is mainly dependent on the presence or absence and duration of the dynamic signal red light 112. In addition, the dynamic traffic signal subsystem 10 further includes a time compensation command transferring module 12, and the compensation command transferring module 12 is connected to the time compensation providing subsystem 40.
1) Signal lamp module 11
Firstly, fix the signal red light 111
The fixed signal red light 111 is a 15 second red light for pedestrian end (opposite color to pedestrian end for vehicle end signal light), which is a red light stage of fixed presence. In the system, the yellow light stage is omitted for simplifying the design, and the pedestrian crossing and waiting are determined by the alternation of red light and green light. The fixed signal red light 111 is a signal light phase that is necessarily experienced, and does not participate in the dynamic provision of the time compensation itself, but functions to constitute a red light phase together with the dynamic signal red light 112.
② dynamic signal red light 112
Dynamic signal red light 112 is a 25 second red light for the pedestrian end, which is a red light phase of dynamic variation. In the case of no time compensation, the red light 111 of the fixed signal and the red light 112 of the dynamic signal together form a red light phase of a duration of 40 seconds, which corresponds to only two signal light phases. When the time compensation supply subsystem 40 determines that the pedestrian meets the time compensation requirement through judgment, the time compensation command transferring module 12 receives the command information and transfers the signal lamp module 11, so that the dynamic signal red lamp 112 does not participate in the signal lamp stage, that is, the signal lamp directly jumps to the fixed signal green lamp 113 after the fixed signal red lamp 111. Under this kind of setting, the red light duration of 40 seconds originally becomes 15 seconds, that is to say the pedestrian has waited for the time of red light and has shortened 25 seconds, and the pedestrian can cross the street in advance, and time pressure is alleviated, the pedestrian's that reduces is illegal and regular.
③ fixed signal green light
The fixed signal green light 113 is a 40 second green light for pedestrian end (opposite color of signal light for vehicle end to pedestrian end), which is a green light stage that is fixedly present. The fixed signal green light 113 is a signal light stage which is inevitably subjected to, does not participate in dynamic providing of time compensation, and forms a two-stage signal light with equal time length together with the red light stage when the system does not provide time compensation; when the system provides time compensation, the duration of the fixed signal green light 113 is still unchanged, and the duration of the green light of the whole signal light is longer than that of the red light, so that pedestrians can cross the street conveniently.
2) Time compensation command transferring module 12
The time compensation command mobilizer module 12 is coupled to the time compensation supply subsystem 40. After the time compensation supply subsystem 40 determines that the pedestrian meets the condition of obtaining time compensation, the pedestrian will be granted the time compensation application, and meanwhile, in order to provide time compensation for the pedestrian really, the time compensation supply subsystem 40 needs the coordination of the dynamic traffic signal subsystem 10 to implement signal adjustment, the organic coordination process of the two subsystems is that the time compensation supply subsystem 40 transmits the instruction to the time compensation instruction transferring module 12, and then the time compensation instruction transferring module 12 transfers the dynamic signal red light 112 in the signal light module 11 to complete the time compensation.
3) First judging module
The first judgment module is used for judging whether the red light of the fixed signal is lightened or not when the request information is received, and if so, the red light of the dynamic signal is converted into the green light of the fixed signal.
(2) An identification subsystem 20
The identification subsystem 20 identifies the target pedestrian, i.e., the pedestrian crossing the street, by using an identification technology and an induction technology. Identification of a pedestrian crossing a street involves two aspects of identification: (1) and (2) identifying behaviors of the pedestrians in the street crossing process, and identifying the identities of the pedestrians in the street crossing. The identification subsystem 20 includes:
1) road fixing shooting device 21
The existing road camera shooting snapshot technical equipment and the road sky-eye snapshot system are utilized, the whole process that pedestrians cross the street can be recorded and collected, and after the pedestrian cross the street, the pedestrian identity information and the pedestrian behavior information can be further identified through image recognition, mining processing and analysis of video data in the later period. The road fixing shooting equipment 21 is particularly important for identifying the travel behaviors of the pedestrians, and the judgment of whether the pedestrians are on a regular road or on a messy road is mainly completed by matching shooting record analysis with signal lamp duration analysis. Meanwhile, the road fixing shooting device 21 can also assist in confirming the identity information of the pedestrian, so that the identity confirmation of the pedestrian is more accurate.
2) Remote face recognition device 22
The remote face recognition device 22 has the main function of assisting in detecting and recognizing the facial features of pedestrians and distinguishing the identity of pedestrians. The remote face recognition device 22 can perform face recognition on pedestrians in a long distance and a large range, and can confirm the identity of the pedestrians more accurately when a plurality of pedestrians cross the street simultaneously.
3) Pedestrian body feature correlation device 23
The pedestrian body characteristic correlation device 23 identifies other body characteristics of the pedestrian such as gait and the like, assists the remote face recognition device 22 to determine the identity of the pedestrian, and jointly confirms the identity of the pedestrian in multiple methods to enable the system to identify the identity of the pedestrian more accurately.
4) IC card sensing device 24
The IC card sensing device 24 can identify the identity of the pedestrian, thereby identifying the specific identity of the traveler more accurately and efficiently. The pedestrians need to carry corresponding identity IC cards, identity information of the pedestrians is recorded in the IC cards, and the identity of the pedestrians is identified together by matching with a face identification method.
5) Image recognition analysis module
The image recognition analysis module analyzes and excavates the collected information containing the target pedestrian to obtain behavior information, identity information and integral information of the target pedestrian; and judging whether the behavior information of the target pedestrian is matched with the preset behavior characteristic information.
(3) Integral variation subsystem 30
The point change subsystem 30 makes concrete connection between the civilization of the street crossing behavior of the pedestrian and the increase and decrease of the point, and the point value of the pedestrian is the benefit (time compensation) for exchanging time for the pedestrian, namely the time saving brought by the legal street crossing opportunity in advance. In order to track the benefits brought by points, pedestrians can gradually recognize the importance of civilized street crossing, and pay more and more attention to accumulation of travel civilized points, so that the civilized street crossing mode can be actively selected finally.
The point change subsystem 30 can classify the pedestrian street-crossing civilization point grade and the point increase and decrease change. When the behavior information of the pedestrian crossing the street is judged to be correct, increasing the integral value of the pedestrian; the pedestrian behavior information is judged to be wrong, and the integral value of the pedestrian is reduced. The higher the pedestrian integration level with a high integration value; a certain pedestrian with higher score grade can obtain more scores when passing through the street civilized, and the deducted scores are correspondingly less when crossing the road; a certain pedestrian with a lower score grade can obtain fewer scores when passing through the street civilized, and the scores deducted when crossing the road are correspondingly more.
(4) Time compensation supply subsystem 40
The time offset supply subsystem 40 determines whether the system will provide time offset for the pedestrian upon receiving the pedestrian request message and sends an acknowledgement to the time offset command deployment module 12 in the dynamic traffic signal subsystem 10.
The time compensation delivery subsystem 40 determines whether the system will provide time compensation for the pedestrian by determining whether the pedestrian's integral is greater than a compensation integral limit, and if so, the time compensation delivery subsystem 40 will agree to provide time compensation for the pedestrian. The time compensation supply subsystem 40 includes the following components:
1) time-compensated pedestrian application facility 41
In order to avoid that the time compensation is frequently provided for the pedestrians to influence the normal running sequence of the road vehicles, only the pedestrians applying the time compensation have the opportunity to obtain the time compensation provided by the system. The time compensation pedestrian application facility 41 has an application button, and when the pedestrian needs to apply the time compensation, the pedestrian can apply the time compensation by pressing the application button.
Time compensation application button
The time compensation application button is a device for applying time compensation for the pedestrian. When the pedestrian needs to apply for obtaining the time compensation, the system can compare the civilization integral accumulated by the pedestrian with the integral limit value of the system by pressing the time compensation application button.
② time compensation application voice prompt system
The time compensation application voice prompt system is used for guiding the pedestrians to apply time compensation, helping to solve the problems encountered by the pedestrians in the application process and ensuring that the pedestrians can correctly apply the time compensation.
2) Integral value determination module 42
The integration value determination module 42 is used to determine whether the integration of the pedestrian applying time compensation can reach the condition for providing time compensation. The integrated value determination module 42 may compare the accumulated integrated value of the pedestrian who applied for time compensation with the limit value set by the time compensation supply sub-system 40, and if the integrated value of the pedestrian is higher than the limit value, the pedestrian is eligible to obtain time compensation.
The integral limit value is calculated by the formula
Wherein, the
Is the average of the w parameters of all target pedestrians who send the request information to the time compensation supply subsystem during the period; and Q is a preset numerical value corresponding to the traffic flow of the road section. The higher the integration level is, the smaller the parameter w is, so that the attention of pedestrians with higher civilization levels is reflected.
Is the average of the w parameters of all pedestrians for which time compensation has been applied during that period.
The final value l is also a limit value obtained by integrating the integral values of pedestrians applying time compensation and then averaging the pedestrian limit parameters, because the integral level of some pedestrians is very high, and meanwhile, pedestrians applying time compensation with not high integral level also apply time compensation, so that the integral limit parameter is required to be averaged in order to make the two types of pedestrians more fair. Q is the traffic flow of the road section, so that the fairness of the vehicle running is reflected, the limit value is increased when the traffic flow is large, pedestrians are more difficult to reach the limit value, and the influence of time compensation on the normal running of the vehicle is reduced as much as possible. And comparing the obtained final limiting value with the average integral value of the pedestrians applying time compensation, and if the average integral value is larger than the limiting value, all the pedestrians applying time compensation can jointly obtain time compensation.
3) Traffic assistance infrastructure
The traffic auxiliary infrastructure is used for assisting the operation of the system, and comprises a camera shooting erection facility, a voice prompt broadcasting system, a physical barrier facility and the like.
Example 2: a signal traffic management method based on time compensation comprises the following steps:
firstly, images and videos related to pedestrian street crossing behaviors are collected.
In a certain road section area, a pedestrian crossroads the road when running the red light, and the time when the pedestrian runs the red light is 19 o' clock at night. The road fixing shooting equipment 21 is mainly used for recording the road crossing behavior of the pedestrian, and can also be combined with other acquisition methods such as unmanned aerial vehicle shooting and vehicle-mounted camera snapshot. The comparison between the several acquisition methods is provided to repeatedly confirm the non-civilized street-crossing behavior of the pedestrian, so that the system can record the non-civilized street-crossing behavior of the pedestrian more accurately, and the image and the video for acquiring the street-crossing behavior of the pedestrian mainly use the road fixed shooting equipment 21 in the identification subsystem 20, which is shown in the following reference example.
Table 1: reference example table for collecting image and video related to pedestrian crossing behavior
And identifying whether the pedestrian crossing behavior meets the requirement.
And excavating and analyzing the street crossing behavior of the pedestrian by utilizing a video analysis technology, and judging whether the street crossing behavior of the pedestrian is civilized or uncertainly.
A certain pedestrian completely obeys the traffic regulation and the traffic light regulation, and then the civilization category of the pedestrian is 1; when a certain pedestrian crosses the road and crosses the street in a certain road section, the civilization category of the pedestrian is 0; if further judgment on whether the pedestrian street crossing behavior is civilized or not is required, the civilization category of the pedestrian is 2. According to the difference of the civilized or uneventful street crossing behaviors of the pedestrian, the pedestrian can obtain civilized category IDs different about the traveling behaviors of the pedestrian, and the civilized category IDs can be simply displayed, wherein the reference examples are as follows:
table 2: reference example table of civilization category IDs
| Civilization classification of pedestrian | Civilization class ID |
| Civilization-free | 0 |
| Civilization | 1 |
| Need to further judge | 2 |
And identifying the identity information of the pedestrian.
The specific identification information identification method mainly adopts face identification and induction identification of the pedestrian IC card identification, and simultaneously identifies other body characteristics of the pedestrian such as gait.
After the identity of the pedestrian is recognized, the system calls out the integral information of the pedestrian, combines the characteristics of the pedestrian, such as the name (identification card number/mobile phone number) and the like capable of expressing the unique identity information of the pedestrian with the civilization category of the behavior of the pedestrian and the current integral record, and facilitates the integral change processing of the pedestrian in the next step.
The accumulated civilization integral value of a certain pedestrian ' Lix ' crossing the road is 200, the system is convenient to distinguish and express for example, and the information can be expressed as ' Lix 0 ' 200 '. "li x" indicates the identification information of the pedestrian, "[ 0 ]" indicates that the civilization type of the pedestrian is "civilization", and "200" indicates that the integral carried by the pedestrian is 200 points. When the pedestrian is not involved in the street crossing, such as when applying for time compensation, the information of the pedestrian only shows its identity and an integrated value, such as "li x 200".
Fourthly, calculating the variation of the pedestrian street crossing civilization integral.
Pedestrians with higher integration grade can obtain more integration when the pedestrians pass the street civilized, and can deduct less integration when the pedestrians do not cross the street civilized; conversely, pedestrians with lower score levels can obtain fewer scores when the pedestrians are civilized to cross the street, and more scores can be deducted when the pedestrians are not civilized to cross the street.
Table 3: specific integral grade dividing and changing rule table
| Pedestrian street-crossing civilization integral value | Pedestrian score | Bonus value of each point | Integral penalty value at each time |
| <0 | 1 | 3 | 12 |
| 0-Q | 2 | 6 | 8 |
| ≥Q | 3 | 9 | 4 |
Q is a preset numerical value corresponding to the traffic flow of the road section, and Q can change along with the change of the traffic flow. The invention mainly solves the problem that people on the road section cross the road in a mess way, and simultaneously considers the normal operation of vehicles, so the division of the integral grade is related to the current road section traffic flow.
When the traffic flow of the road section is large, time compensation should not be frequently provided for pedestrians, because the traffic pressure of vehicles needs to be relieved firstly, and then higher points are needed to achieve higher points due to the fact that the point grading is related to the traffic flow, so that pedestrians with lower points can be screened out and time compensation is not provided for the pedestrians.
When the traffic flow is small (in an extreme case, the traffic flow is 0), pedestrians can easily reach a high integral level, the integral value obtained by every civilization street crossing is rewarded more, and time compensation is obtained more easily. In conclusion, the integral grade division of the pedestrians is dynamic, and the same pedestrian can have different integral grades due to different traffic flows of the road section, so that the difficulty degree of obtaining time compensation by collecting the integral of the pedestrian is adjusted, and the influence of the time compensation on the normal vehicle running of the road section is avoided as much as possible.
For example, the current traffic flow Q of the road section of the pedestrian 'li x' crossing the road is 200veh/h, the integral carried by the pedestrian 'li x' satisfies more than or equal to Q, the integral grade of the pedestrian is 3, and 4 points need to be deducted. The recording process of the pedestrian "li x" can be represented as "li x [0]200 (-4)", where (-4) indicates that the integral variation of the pedestrian is deducted by 4 points. The process of representation does not need to explain the pedestrian integration level, because the pedestrian integration level can be judged by increasing or decreasing the integration value of the pedestrian.
Providing time compensation.
The provision of time compensation requires the following two points: firstly, the pedestrian makes a request for obtaining time compensation to the system; and secondly, the street-crossing civilization integral of the pedestrian applying time compensation reaches the integral limit value of the system. When the pedestrian meets the two requirements, the system enables the dynamic signal lamp to function and provides time compensation for the pedestrian.
The value l is a limit value obtained by integrating the integral values of pedestrians applying time compensation and then averaging the pedestrian limit parameters, because the integral level of some pedestrians is very high, and meanwhile, pedestrians applying time compensation with not high integral level also apply time compensation, the integral limit parameter needs to be averaged in order to make the two types of pedestrians more fair. Q is the traffic flow of the road section, so that the fairness of the vehicle running is reflected, the limit value is increased when the traffic flow is large, pedestrians are more difficult to reach the limit value, and the influence of time compensation on the normal running of the vehicle is reduced as much as possible. And comparing the obtained final limiting value with the average integral value of the pedestrians applying time compensation, and if the average integral value is larger than the limiting value, all the pedestrians applying time compensation can jointly obtain time compensation.
Table 4: parameters w of pedestrians of different integration levels
| Pedestrian street-crossing civilization integral value | Pedestrian score | Value of w |
| <0 | 1 | 3 |
| 0-Q | 2 | 2 |
| ≥Q | 3 | 1 |
When three pedestrians "liu 500", "sun 1400" and "wang 800" apply time compensation at the same time when the traffic flow Q is 600veh/h, then l is 600 × (2+1+1) ÷ 3 ÷ 800, the average value of the pedestrian integrals is 900, which is greater than 800, and three pedestrians can obtain time compensation. It is worth mentioning that after time compensation is provided, in order to improve the pedestrian crossing efficiency, pedestrians who do not apply for time compensation can also cross the street by ' taking a free vehicle ', namely cross the street by the time compensated by the system for other pedestrians, but all pedestrians who cross the street in the time compensation stage and obtain the benefit of time compensation, whether the pedestrians apply for or the pedestrians taking a free vehicle ', can be deducted 2 points as the cost of time compensation, and the fairness and the justice of the system are embodied.
And compensating the system.
The system compensates for the 25 second time each time the pedestrian is provided with a change in the red light of the dynamic signal. A pedestrian needs to obtain time compensation, the countdown time of 40 seconds is 35 seconds (namely, the red light passes 5 seconds), after the pedestrian applies for the time compensation successfully, the red light is changed into the green light when the countdown time reaches 25 seconds, namely, the pedestrian applying for the time compensation successfully needs to wait for 15 seconds of red light at most, and the waiting time of 25 seconds is saved.
Example 3: signal traffic system implementation effect based on time compensation
(1) Safety of pedestrian crossing street
The civilized street crossing of pedestrian has reduced the pedestrian and has taken place vicious interaction's possibility with the vehicle at the street crossing in-process, has improved the security that the pedestrian crossed the street greatly, and through the emulation, concrete pedestrian crosses the street security promotion condition as follows:
table 5: pedestrian crossing safety promotion meter
| Vehicle flow Q (veh/h) | Probability of crossing road safely | Probability of crossing road safely | Street crossing safety promotion rate |
| 200 | 0.891 | 1 | 0.12233 |
| 400 | 0.883 | 1 | 0.13250 |
| 600 | 0.876 | 1 | 0.14155 |
| 800 | 0.877 | 1 | 0.14025 |
| 1000 | 0.871 | 1 | 0.14811 |
| 1200 | 0.867 | 1 | 0.15340 |
| 1400 | 0.863 | 1 | 0.15875 |
| 1600 | 0.866 | 1 | 0.15473 |
| 1800 | 0.851 | 1 | 0.17509 |
| 2000 | 0.857 | 1 | 0.16686 |
(2) Efficiency of passage of vehicles through road sections
Although the way of providing time compensation for the pedestrians by the invention may affect the normal operation of the vehicle, the pedestrian turns to the civilized street crossing, so that the vehicle can reduce unnecessary concessions to the pedestrians, and the improvement of the vehicle passing efficiency is actually facilitated, and the improvement is represented by the reduction of the passing time of the vehicle passing through the same road section. Through simulation, specific vehicle operating efficiency improvement conditions are as follows:
table 6: vehicle passing efficiency promotion meter
| Vehicle flow Q (veh/h) | Rate of reduction of transit time of a vehicle through a road segment |
| 200 | 0.016537 |
| 400 | 0.01586 |
| 600 | 0.015194 |
| 800 | 0.008071 |
| 1000 | 0.004047 |
| 1200 | 0.007319 |
| 1400 | 0.006968 |
| 1600 | 0.003321 |
| 1800 | 0.00113 |
| 2000 | 0.012247 |
In conclusion, the traffic light time is reasonably distributed, the violation rate of pedestrians is reduced, and the safety of pedestrian crossing is improved.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures or equivalent flow transformations made by using the contents of the specification and the drawings, or applied directly or indirectly to other related systems, are included in the scope of the present invention.
Claims (8)
1. The signal traffic system based on time compensation is characterized by comprising an identification subsystem, a dynamic traffic signal subsystem, an integral variation subsystem and a time compensation supply subsystem, wherein the identification subsystem, the dynamic traffic signal subsystem, the integral variation subsystem and the time compensation supply subsystem are arranged in the system
The identification subsystem is used for identifying behavior information, identity information and integral information of at least one target pedestrian;
the integral change subsystem is used for changing the integral information according to the behavior information;
the time compensation provision subsystem is configured to: receiving request information of at least one target pedestrian; judging whether the integral information of at least one target pedestrian sending request information reaches a preset integral limit value, and if so, sending the request information to the dynamic traffic signal subsystem;
and the dynamic traffic signal subsystem is used for adjusting the distribution time length of the signal lamp according to the received request information.
2. The signal traffic system based on time compensation of claim 1,
the calculation formula of the preset integral limit value is
Wherein, the
Is the average value of w parameters of all target pedestrians sending request information to the time compensation supply subsystem in a time period with the traffic flow rate Q; q is a preset numerical value corresponding to the traffic flow of the road section; the w parameter is the passing grade of the target pedestrian.
3. The time compensation based signal traffic system of claim 1, wherein the recognition subsystem comprises an image recognition analysis module configured to:
analyzing and mining the collected information including the target pedestrian to obtain behavior information, identity information and integral information of the target pedestrian;
and judging whether the behavior information of the target pedestrian is matched with the preset behavior characteristic information.
4. The signal traffic system based on time compensation of claim 3,
the identification subsystem further comprises one or more of road fixed shooting equipment, remote face identification equipment, pedestrian body characteristic correlation equipment and IC card induction equipment.
5. The signal traffic system based on time compensation according to any one of claims 1 to 4, wherein the time compensation supply subsystem includes a reception request module and an integrated value judgment module.
6. The signal traffic system based on time compensation of claim 5, wherein the time compensation supply subsystem further comprises a time compensation pedestrian application facility.
7. The time compensation based signal traffic system of any one of claims 1-4, wherein the dynamic traffic signal subsystem comprises a time compensation command invoking module and a signal light module, wherein:
the time compensation instruction transferring module controls the display of the signal lamp module;
the signal lamp module comprises a fixed signal red lamp, a dynamic signal red lamp and a fixed signal green lamp;
and the time compensation instruction transferring module is used for converting the red light of the dynamic signal into the green light of the fixed signal when receiving the request information sent by the time compensation supply subsystem.
8. The signal traffic system according to claim 7, wherein the dynamic traffic signal subsystem comprises a first determining module, the first determining module is configured to determine whether the red fixed signal light is on when the request message is received, and if so, the red dynamic signal light is changed to a green fixed signal light.
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