Traffic signal refined management and control system

Abstract

The invention discloses a traffic signal refined management and control system, and relates to the technical field of intelligent traffic management systems, and the system comprises an information calling module which is used for calling the basic timing information of each signal lamp of a target intersection, and a traffic monitoring module which is used for collecting the traffic information of each channel of the intersection corresponding to each signal lamp under the basic timing working condition, wherein the traffic information comprises a length increment Lzi and a length consumption Lxi; and the data analysis module is used for calculating the basic timing traffic variation coefficient Lsi of the corresponding intersection based on the length increment Lzi and the length consumption Lxi of each intersection. According to the method, the overall traffic pressure parameters before and after adjustment are evaluated and analyzed to perform coordinated analysis and adaptive adjustment on the traffic signal lamp timing, so that the traffic flow is optimized, the traffic efficiency is improved, and the traffic quality balance of each channel at the intersection is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent transportation management systems, and particularly to a traffic signal fine control system. Background Art

[0002] An intelligent transportation management system is a comprehensive and highly automated system designed to optimize urban traffic mobility, improve traffic efficiency, reduce congestion, enhance traffic safety, and improve the travel experience of urban residents. The intelligent transportation management system realizes adaptive signal control, and the traffic signal system makes adaptive adjustments according to real-time traffic conditions to optimize the operation of traffic lights and relieve traffic congestion.

[0003] For example, in the patent application with the application publication number CN108074404A and the name "Intelligent Transportation Management System and Method", its intelligent transportation management system includes a traffic flow monitoring module installed at the positions of the vehicle entry directions of each road at the intersection to capture image information of each direction of the current intersection; a traffic flow counting module communicatively connected to the traffic flow monitoring module for receiving the image information of the traffic flow monitoring system, obtaining the number of vehicles based on the image information, and counting the number of vehicles in real time; a data processing module communicatively connected to the traffic flow counting module for receiving the statistical number of vehicles and allocating the priority levels of the passing sequences of each lane; and a traffic signal control module communicatively connected to the data processing module for receiving the lane priority levels of the data processing module and controlling the real-time states of the traffic lights in each direction of the intersection lanes.

[0004] In the prior art intelligent transportation management systems including the above application, they only determine the passing priorities of each lane based on the number of vehicles in each lane and then adjust and control the traffic lights. Obviously, for intersections with large traffic demands, the green light time is extended to meet the passing needs of vehicles and pedestrians. However, when the green light time is extended, it will affect the signal cycle and traffic flow of related intersections, and there is no comprehensive analysis and control of the overall channels of the intersection, thus causing congestion in the lanes of related intersections. Summary of the Invention

[0005] The purpose of the present invention is to provide a traffic signal fine control system to solve the above deficiencies in the prior art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A traffic signal fine control system, comprising:

[0007] An information retrieval module, which is used to retrieve the basic timing information of each signal light at the target intersection and record it as T1, T2, T3... T n , where T nIndicates the green light passing duration of the nth traffic signal corresponding to the controlled intersection channel;

[0008] A traffic monitoring module for collecting traffic information of each channel of each intersection under the basic timing condition of each signal light, where the traffic information includes the length increment L zi and the length reduction L xi ;

[0009] A data analysis module that calculates the basic timing traffic change coefficient L of the corresponding intersection based on the length increment L and length reduction L of each intersection zi and the length reduction L xi of each intersection, and calculates the ideal timing adjustment value T' of each traffic signal at each intersection based on the traffic change coefficient of each channel si ; i ;

[0010] An integration processing module for identifying the set of ideal timing adjustment values of the signal lights, selecting the ideal timing adjustment values of the traffic signals greater than zero to obtain the timing increase adjustment set, and selecting the ideal timing adjustment values of the traffic signals less than zero to obtain the timing decrease adjustment set;

[0011] A timing decrease adjustment unit for retrieving the timing decrease adjustment set and obtaining the ideal timing adjustment value of the traffic signal to adjust the timing of the target traffic signal;

[0012] A timing increase adjustment unit for calculating and obtaining the cycle adjustment increment Bt, calculating the traffic pressure parameters of each channel of the intersection after timing adjustment based on the cycle adjustment increment Bt and the traffic pressure parameters of each channel of the intersection under the current basic timing condition, and performing comparative evaluation analysis to adjust the timing of the traffic signal.

[0013] As a further description of the above technical solution: The calculation method for calculating the basic timing traffic change coefficient of the intersection channel based on the length increment and length reduction of each intersection is:

[0014]

[0015] where L si also represents the basic timing traffic change coefficient of the i-th traffic signal corresponding to the controlled intersection channel, and the traffic change coefficients of each channel of the intersection obtained by integration are respectively recorded as: {L s1 , L s2 ...L si ...L sn}.

[0016] As a further description of the above technical solution: The calculation logic of the ideal timing adjustment value T' of the traffic signal i is: And integrate to obtain the set of ideal timing adjustment values of traffic signal lights for each channel at the intersection: {T'1, T'2... T' i ... T'n}.

[0017] As a further description of the above technical solution: The specific calculation of the cycle adjustment increment Bt is as follows:

[0018] Sum the ideal timing adjustment values of each traffic signal light in the increment timing adjustment set to obtain the overall adjustment increment Zt;

[0019] Sum the ideal timing adjustment values of each traffic signal light in the decrement timing adjustment set to obtain the overall adjustment decrement Jt;

[0020] Retrieve the overall adjustment increment Zt and the overall adjustment decrement Jt, and calculate the difference between the two to obtain the cycle adjustment increment Bt, where Bt = Zt - Jt.

[0021] As a further description of the above technical solution: The traffic pressure parameter P of each channel at the intersection after timing adjustment based on the cycle adjustment increment Bt L1 The specific calculation method is as follows:

[0022] Retrieve the set of ideal timing adjustment values of traffic signal lights for each channel at the intersection {T'1, T'2... T' i ... T' n};

[0023] Associate the cycle adjustment increment Bt to calculate the traffic adjustment variation coefficient L of each channel at the intersection ti , where the traffic adjustment variation coefficient L ti The calculation logic is:

[0024]

[0025] Integrate to obtain the set of traffic adjustment variation coefficients of each channel at the intersection {L t1 、L t2 ... L ti ... L tn};

[0026] Calculate the overall index parameter and the fluctuation index parameter based on the set of traffic adjustment variation coefficients and perform weighted summation to calculate the adjusted traffic pressure parameter P L1 , the calculation logic of the adjusted traffic pressure parameter P L1 is: where are weight coefficients all greater than 0.

[0027] As a further description of the above technical solution: The traffic pressure parameter P of each channel at the intersection under the current basic timing condition L0The calculation method is as follows:

[0028] Retrieve the traffic change coefficients of each channel at the intersection under the current basic timing condition and record them respectively as: {L s1 、L s2 ...L si ...L sn};

[0029] Calculate the overall index parameter and the fluctuation index parameter based on the traffic adjustment change coefficient set and perform weighted summation to obtain the current traffic pressure parameter P L0 The current traffic pressure parameter P L0 The calculation logic is as follows: Among them Among them The weight coefficients are all greater than 0.

[0030] As a further description of the above technical solution: Calculate the traffic pressure parameters of each channel at the intersection after timing adjustment based on the cycle adjustment increment Bt and the traffic pressure parameters of each channel at the intersection under the current basic timing condition, and conduct comparative evaluation and analysis to adjust the traffic signal timing. Specifically:

[0031] When P L1 ≤P L0 , retrieve the timing increase adjustment set, obtain the ideal timing adjustment value of the traffic signal in the timing increase adjustment set, and adjust the timing of the target traffic signal;

[0032] When P L1 >P L0 , retrieve the timing increase adjustment set, obtain the ideal timing adjustment value of the traffic signal, calculate the overall proportion of the timing adjustment values of each target traffic signal in the timing increase adjustment set, calculate the timing adjustment value based on the overall proportion of the timing adjustment values of each target traffic signal and the overall adjustment reduction Jt, and adjust the timing of the target traffic signal.

[0033] As a further description of the above technical solution: Calculate the comprehensive proportion of the timing adjustment values of each target traffic signal in the timing increase adjustment set, and calculate the timing-related adjustment value based on the comprehensive proportion of the timing adjustment values of each target traffic signal and the overall adjustment reduction Jt. Specifically:

[0034] Obtain the timing increase adjustment set where m < n, represents the ideal timing adjustment value of the channel corresponding to the mth traffic signal at the controlled intersection;

[0035] Obtain the set of lane numbers of the channels corresponding to each traffic signal in the timing increase adjustment set {D1, D2... D m};

[0036] The calculation method of the associated adjustment value of the timing for the m-th traffic signal corresponding to the controlled intersection channel is as follows: where δ1 and δ2 are weight coefficients both greater than 0, and δ1 + δ2 = 1,

[0037] Integrate to obtain the timing adjustment set for each traffic signal corresponding to the controlled channel in the timing increase adjustment set And adjust the timing of the target traffic signal based on the timing adjustment set.

[0038] As a further description of the above technical solution: Obtain the timing increase adjustment set Specifically:

[0039] Retrieve the ideal timing adjustment value set of traffic signals: {T'1, T'2...T' i ...T' n};

[0040] Traverse and identify each ideal timing adjustment value in the ideal timing adjustment value set of traffic signals, obtain the values greater than 0 of the ideal timing adjustment values and integrate them in sequence to obtain the timing increase adjustment set

[0041] As a further description of the above technical solution: The length increment L zi represents the unit time increment of the vehicle queue length at the intersection when the i-th traffic signal corresponds to the controlled intersection channel is red;

[0042] The length reduction L xi represents the unit time reduction of the vehicle queue length at the intersection when the i-th traffic signal corresponds to the controlled intersection channel is green.

[0043] In the above technical solution, a traffic signal fine control system provided by the present invention analyzes and calculates the traffic information of each channel at the intersection under the basic timing condition to obtain the signal timing adjustment value, integrates to obtain the timing reduction adjustment set and the timing increase adjustment set, and adjusts the timing of the target traffic signal based on the timing reduction adjustment set. At the same time, calculate and obtain the cycle adjustment increment based on the timing increase adjustment set, and evaluate and analyze the overall traffic pressure parameters before and after the adjustment to conduct coordinated analysis and adaptive adjustment of the traffic signal timing, avoiding affecting the signal cycle and traffic flow of related intersections, realizing the overall integration and evaluation control of each channel at the intersection, not only optimizing the traffic flow and improving the traffic efficiency, but also ensuring the balance of the traffic quality of each channel at the intersection. Description of the Drawings

[0044] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required in the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0045] Figure 1 It is a schematic diagram of a refined traffic signal control system provided by an embodiment of the present invention. Detailed implementation manners

[0046] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. However, those skilled in the art should clearly understand that the present application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details from interfering with the description of the present application.

[0047] It should be understood that when used in the specification and appended claims of the present application, the term "comprising" indicates the presence of the described features, wholes, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0048] It should also be understood that the term "and / or" used in the specification and appended claims of the present application refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0049] As used in the specification and appended claims of the present application, the term "if" can be interpreted as "when", "once", "in response to determining", or "in response to detecting" depending on the context. Similarly, the phrase "if determined" or "if [the described condition or event] is detected" can be interpreted as meaning "once determined", "in response to determining", "once [the described condition or event] is detected", or "in response to detecting [the described condition or event]" depending on the context.

[0050] In addition, in the description of the specification and appended claims of the present application, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0051] References to "one embodiment" or "some embodiments" in the description of the present application mean that specific features, structures, or characteristics described in connection with that embodiment are included in one or more embodiments of the present application. Thus, statements such as "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments", etc., which appear at different places in this specification, do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized. The terms "comprising", "including", "having" and their variants all mean "including but not limited to", unless otherwise specifically emphasized.

[0052] Please refer to Figure 1 , an embodiment of the present invention provides a technical solution: a refined traffic signal control system, which is characterized by including:

[0053] An information retrieval module, wherein the information retrieval module is connected to the intersection traffic control system, and is used to retrieve the basic timing information of each signal light at the target intersection and record it as T1, T2, T3... T n , where T n represents the green light passing duration of the nth traffic signal corresponding to the controlled intersection channel;

[0054] A traffic monitoring module. Optionally, the traffic detection module is an image monitoring and analysis system, which is set at the target intersection and is used for the vehicle passing video at the target intersection, and is used to collect the traffic information of each channel at the intersection under the basic timing condition of each signal light. The traffic information includes the length increment L zi and the length reduction L xi ;

[0055] where the length increment L zi represents the unit time growth amount of the vehicle queue length at the intersection when the i-th traffic signal corresponds to the controlled intersection channel is red;

[0056] The length reduction L xi represents the unit time reduction amount of the vehicle queue length at the intersection when the i-th traffic signal corresponds to the controlled intersection channel is green.

[0057] A data analysis module, which calculates the basic timing traffic change coefficient L zi corresponding to the intersection based on the length increment L xi and the length reduction L si of each intersection. The basic timing traffic change coefficient is the queue vehicle length coefficient of each channel at the intersection within one cycle time of the current basic timing based on the length increment L zi and the length reduction L xi data of each channel corresponding to the signal light at the intersection. It should be noted that when the basic timing traffic change coefficient Lsi When it is a positive number, it means that when the traffic signal at the i-th intersection is green, the queue length of vehicles at the intersection cannot pass completely. When the basic timing traffic change coefficient L si is a negative number, it means that when the traffic signal at the i-th intersection is green, the queue length of vehicles at the intersection passes completely and there is redundant green light time. Based on the traffic change coefficients of each channel, the ideal timing adjustment value T' of the traffic signal at each intersection is calculated i ; The ideal timing adjustment values of the traffic signals at each intersection obtained by calculation are integrated to obtain a set of ideal timing adjustment values of the signal lights.

[0058] An integration processing module, which is used to identify the set of ideal timing adjustment values of the signal lights, select the ideal timing adjustment values of the traffic signals greater than zero to obtain a set of timing increase adjustment values. Each ideal timing adjustment value in the set of timing increase adjustment values is a positive number, which means that the green light time of the corresponding traffic signal needs to be extended. Select the ideal timing adjustment values of the traffic signals less than zero to obtain a set of timing decrease adjustment values; each ideal timing adjustment value in the set of timing decrease adjustment values is a negative number, which means that the green light time of the corresponding traffic signal needs to be shortened.

[0059] A timing decrease adjustment unit, which is used to retrieve the set of timing decrease adjustment values and obtain the ideal timing adjustment value of the traffic signal to adjust the timing of the target traffic signal; specifically, by reading each ideal timing adjustment value in the set of timing decrease adjustment values, and based on each ideal timing adjustment value of the traffic signal, the green light time of the corresponding traffic signal is adjusted.

[0060] A timing increase adjustment unit, which is used to calculate and obtain the cycle adjustment increment Bt, calculate the traffic pressure parameters of each channel at the intersection after the timing adjustment based on the cycle adjustment increment Bt and the traffic pressure parameters of each channel at the intersection under the current basic timing working condition, and conduct a comparative evaluation analysis to adjust the timing of the traffic signal.

[0061] This embodiment provides a traffic signal fine control system, which analyzes and calculates the traffic information of each channel at the intersection under the basic timing working condition to obtain the signal light timing adjustment value, integrates to obtain a set of timing decrease adjustment values and a set of timing increase adjustment values, and adjusts the timing of the target traffic signal based on the set of timing decrease adjustment values. At the same time, based on the set of timing increase adjustment values, the cycle adjustment increment is calculated, and the overall traffic pressure parameters before and after the adjustment are evaluated and analyzed to conduct coordinated analysis and adaptive adjustment of the traffic signal timing, avoiding affecting the signal cycle and traffic flow of related intersections, realizing the overall integration and evaluation control of each channel at the intersection, that is, realizing the optimization of traffic flow, improving the traffic efficiency, and ensuring the balance of the traffic quality of each channel at the intersection.

[0062] The calculation method of the traffic variation coefficient of the basic timing of the intersection channel based on the length increment and length reduction of each intersection is as follows:

[0063]

[0064] Where L si And represents the traffic variation coefficient of the basic timing of the intersection channel corresponding to the i-th traffic signal. The traffic variation coefficients of each channel of the intersection obtained by integration are respectively recorded as: {L s1 、L s2 ...L si ...L sn}.

[0065] The calculation logic of the ideal timing adjustment value T' of the traffic signal i is as follows: And the set of ideal timing adjustment values of the traffic signals for each channel of the intersection obtained by integration is: {T'1, T'2...T' i ...T' n}. Where T' i represents the time when the basic timing of the traffic signal needs to be adjusted for the traffic variation coefficient L si of the intersection channel corresponding to the i-th traffic signal, that is, the ideal timing adjustment value of the traffic signal.

[0066] The specific calculation of the cycle adjustment increment Bt is as follows:

[0067] Sum the ideal timing adjustment values of each traffic signal in the increment adjustment set to obtain the overall adjustment increment Zt;

[0068] Sum the ideal timing adjustment values of each traffic signal in the decrement adjustment set to obtain the overall adjustment decrement Jt;

[0069] Retrieve the overall adjustment increment Zt and the overall adjustment decrement Jt, and calculate the difference between the two to obtain the cycle adjustment increment Bt, where Bt = Zt - Jt.

[0070] The calculation method of the traffic pressure parameter P L1 of each channel of the corresponding intersection after timing adjustment based on the cycle adjustment increment Bt is as follows:

[0071] Retrieve the set of ideal timing adjustment values of the traffic signals for each channel of the intersection {T'1, T'2...T' i ...T' n};

[0072] Associate the cycle adjustment increment Bt to calculate the traffic adjustment variation coefficient L ti of each channel of the intersection, where the calculation logic of the traffic adjustment variation coefficient L ti is as follows: Among them, T' i = MAX(T' i , 0) means that when T' i ≤0, T' i = 0, and when T' i >0, T' i = T' i . By integrating, a set of traffic adjustment change coefficient {L t1 , L t2 ...L ti ...L tn} for each channel at the intersection is obtained;

[0073] Calculate the overall index parameter and the fluctuation index parameter based on the set of traffic adjustment change coefficients and perform weighted summation to calculate the adjusted traffic pressure parameter P L1 . The calculation logic of the adjusted traffic pressure parameter P L1 is as follows: Among them are weight coefficients all greater than 0. The traffic pressure parameter is an integrated quantization index of the overall traffic pressure situation of each channel at the target intersection and the equilibrium state of the pressure situation of each channel.

[0074] Under the current basic signal timing condition, the calculation method of the traffic pressure parameter P L0 for each channel at the intersection is as follows:

[0075] Retrieve the traffic change coefficients of each channel at the intersection under the current basic signal timing condition and record them respectively as: {L s1 , L s2 ...L si ...L sn};

[0076] Calculate the overall index parameter and the fluctuation index parameter based on the set of traffic adjustment change coefficients and perform weighted summation to obtain the current traffic pressure parameter P L0 . The calculation logic of the current traffic pressure parameter P L0 is as follows: Among them Among them are weight coefficients all greater than 0.

[0077] Calculate the traffic pressure parameters of each channel at the intersection after timing adjustment based on the cycle adjustment increment Bt and the traffic pressure parameters of each channel at the intersection under the current basic signal timing condition, and conduct comparative evaluation and analysis to adjust the traffic signal timing specifically as follows:

[0078] When P L1 ≤P L0When it is time, retrieve the timing increase adjustment set, obtain the ideal timing adjustment values of the traffic lights in the increase adjustment set, and adjust the timing of the target traffic lights accordingly;

[0079] When P L1 > P L0 When it is time, retrieve the timing increase adjustment set, obtain the ideal timing adjustment values of the traffic lights, calculate the overall proportion of the timing adjustment values of each target traffic light in the increase adjustment set, calculate the timing adjustment value based on the overall proportion of the timing adjustment values of each target traffic light associated with the overall adjustment reduction Jt, and adjust the timing of the target traffic lights.

[0080] Specifically, this embodiment provides a traffic signal fine control system to integrally quantify and calculate the traffic pressure parameters from two dimensions: the overall traffic pressure situation of each channel at the target intersection and the balance state of the pressure situation of each channel, and evaluate and compare the current traffic pressure parameters with the traffic pressure parameters of each channel at the corresponding intersection after timing adjustment based on the cycle adjustment increment Bt for adaptive adjustment, timely evaluate the operation effect after the signal light adjustment, and make corresponding adjustments and optimizations according to the evaluation results, effectively improving the road traffic efficiency and alleviating the traffic congestion problem.

[0081] The calculation of the comprehensive proportion of the timing adjustment values of each target traffic light in the increase adjustment set, and the calculation of the timing-related adjustment value based on the comprehensive proportion of the timing adjustment values of each target traffic light associated with the overall adjustment reduction Jt are specifically as follows:

[0082] Retrieve the increase adjustment set where m < n, represents the ideal timing adjustment value of the control intersection channel corresponding to the m-th traffic light;

[0083] Retrieve the lane number set {D1, D2... D m} of each traffic light corresponding to the control channel in the increase adjustment set; represents the number of lanes of the control intersection channel corresponding to the m-th traffic light, where D m ≥ 1;

[0084] The calculation method of the timing-related adjustment value of the control intersection channel corresponding to the m-th traffic light is as follows: where δ1 and δ2 are weight coefficients both greater than 0, and δ1 + δ2 = 1,

[0085] Integrate to obtain the timing adjustment set of each traffic light corresponding to the control channel in the increase adjustment set And adjust the timing of the target traffic lights based on the timing adjustment set.

[0086] The retrieval of the increase adjustment set Specifically, it is as follows:

[0087] Retrieve the set of ideal timing adjustment values for traffic lights: {T'1, T'2... T' i ... T' n};

[0088] Traverse and identify each ideal timing adjustment value in the set of ideal timing adjustment values for traffic lights, obtain the values of the ideal timing adjustment values greater than 0 and integrate them in sequence to obtain the set of timing increase adjustments Furthermore, this embodiment provides a traffic signal fine control system. When calculating the timing correlation adjustment values of each target traffic light based on the overall adjustment reduction Jt, it is possible to comprehensively consider the geometric characteristics of each intersection lane and the timing increase adjustment characteristics of the current basic timing to adjust the timing of the traffic lights in each intersection lane, ensuring the continuity and smoothness of the traffic flow.

[0089] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0090] The above-disclosed preferred embodiments of the present invention are only used to help explain the present invention. The preferred embodiments do not elaborate on all details, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present invention, so that those skilled in the art in the relevant technical field can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A traffic signal refined control system, characterized in that: include: The information retrieval module is used to retrieve the basic timing information of each signal light at the target intersection and record it as T1, T2, T3...T n , where T n Indicates the green light duration of the nth traffic light corresponding to the controlled intersection; Traffic monitoring module, used to collect traffic information of each channel at each intersection under basic timing conditions for each signal light, where the traffic information includes length increment L zi and length elimination L xi ; The data analysis module is based on the length increment L of each intersection. zi and length elimination L xi Calculate the traffic variation coefficient L of the basic timing of the corresponding intersection si , and calculate the ideal timing adjustment value T' of traffic lights at each intersection based on the traffic change coefficient of each channel i ; An integrated processing module, which is used to identify the ideal timing adjustment value set of traffic lights, select the ideal timing adjustment value of traffic lights greater than zero to obtain the timing increase adjustment set, and select the ideal timing adjustment value of traffic lights less than zero to obtain the timing decrease adjustment set; A time reduction adjustment unit, which is used to retrieve a time reduction adjustment set, obtain an ideal traffic signal timing adjustment value, and adjust the target traffic signal timing; The timing adjustment unit is used to calculate the periodic adjustment increment Bt, calculate the traffic pressure parameters of each channel at the intersection after the timing adjustment based on the periodic adjustment increment Bt and the traffic pressure parameters of each channel at the intersection under the current basic timing conditions, and perform comparative evaluation and analysis to adjust the timing of traffic lights.

2. A traffic signal refined control system according to claim 1, characterized in that: The calculation method of the traffic variation coefficient of the basic timing of the intersection channel based on the length increment and length reduction of each intersection is as follows: Where L si And it represents the basic timing traffic variation coefficient of the channel at the controlled intersection corresponding to the i-th traffic signal light, and the traffic variation coefficients of each channel at the intersection are obtained by integration and recorded as: {L s1 , L s2 ...L si ...L sn }.

3. A traffic signal refined control system according to claim 2, characterized in that: Ideal timing adjustment value of traffic lights T' i The calculation logic is: And integrate to obtain the ideal timing adjustment value set of traffic lights at each channel of the intersection: {T'1, T'2...T' i ...T' n }.

4. A traffic signal refined control system according to claim 1, characterized in that: The calculation to obtain the period adjustment increment Bt is specifically as follows: The ideal timing adjustment values ​​of each traffic light in the incremental adjustment set are summed to obtain the overall adjustment increment Zt; The ideal timing adjustment values ​​of each traffic light in the time reduction adjustment set are summed to obtain the overall adjustment reduction Jt; The overall adjustment increment Zt and the overall adjustment decrement Jt are retrieved, and the difference between the two is calculated to obtain the periodic adjustment increment Bt, where Bt=Zt-Jt.

5. A traffic signal refined control system according to claim 4, characterized in that: The traffic pressure parameter P of each channel at the intersection after the timing adjustment based on the periodic adjustment increment Bt L1 The specific calculation method is: Retrieve the ideal timing adjustment value set of traffic lights at each channel of the intersection {T'1, T'2...T' i ...T' n }; The traffic adjustment coefficient L of each channel at the intersection is calculated by correlating the periodic adjustment increment Bt ti , where the traffic adjustment coefficient L ti The calculation logic is: The traffic adjustment coefficient set {L t1 , L t2 ...L ti ...L tn }; Based on the traffic adjustment variation coefficient set, the overall index parameter and the fluctuation index parameter are calculated and the adjusted traffic pressure parameter P is calculated by weighted summation. L1 , adjusted traffic pressure parameter P L1 The calculation logic is: in The weight coefficients are all greater than 0.

6. A traffic signal refined control system according to claim 5, characterized in that: Traffic pressure parameter P of each channel at the intersection under the current basic timing conditions L0 The calculation method is: The traffic variation coefficients of each channel at the intersection under the current basic timing conditions are retrieved and recorded as: {L s1 , L s2 ...L si ...L sn }; Based on the traffic adjustment coefficient set, the overall index parameter and the fluctuation index parameter are calculated and weighted summed to obtain the current traffic pressure parameter P. L0 , current traffic pressure parameter P L0 The calculation logic is: in in The weight coefficients are all greater than 0.

7. A traffic signal refined control system according to claim 5, characterized in that: Calculate the traffic pressure parameters of each channel at the intersection after the timing adjustment based on the periodic adjustment increment Bt and the traffic pressure parameters of each channel at the intersection under the current basic timing conditions, and conduct comparative evaluation and analysis to adjust the traffic signal timing as follows: When P L1 ≤P L0 When the time adjustment set is called, the ideal timing adjustment value of the traffic light in the time adjustment set is obtained to adjust the timing of the target traffic light; When P L1 >P L0 When the desired traffic light timing is reached, the timing increase adjustment set is retrieved to obtain the ideal traffic light timing adjustment value. The overall proportion of the timing adjustment values ​​of each target traffic light in the timing increase adjustment set is calculated. The timing adjustment value is calculated based on the overall adjustment reduction Jt associated with the overall proportion of the timing adjustment values ​​of each target traffic light, and the timing of the target traffic light is adjusted.

8. The traffic signal refined control system according to claim 1 is characterized in that: The calculation of the comprehensive proportion of the timing adjustment values ​​of each target traffic light in the increase adjustment set and the calculation of the timing-related adjustment value based on the comprehensive proportion of the timing adjustment value of each target traffic light and the associated overall adjustment reduction Jt are specifically: Get the time-increase adjustment collection Where m<n, Indicates the ideal timing adjustment value of the mth traffic light corresponding to the controlled intersection channel; Get the lane number set {D1, D2...D m }; The calculation method of the timing adjustment value of the channel at the controlled intersection corresponding to the mth traffic light is: Among them, δ1 and δ2 are weight coefficients both greater than 0, δ1+δ2=1, Integrate and obtain the timing adjustment set of each traffic light corresponding to the control channel in the time-increase adjustment set And adjust the timing of the target traffic light based on the timing adjustment set.

9. A traffic signal refined control system according to claim 8, characterized in that: The acquisition time-increase adjustment set Specifically: Retrieve the ideal traffic light timing adjustment value set: {T'1, T'2...T' i ...T' n }; Traverse and identify each ideal timing adjustment value in the ideal timing adjustment value set of the traffic light, obtain the values ​​of the ideal timing adjustment value greater than 0 and integrate them in sequence to obtain the incremental adjustment set 10. A traffic signal refined control system according to claim 1, characterized in that: The length increment L zi It represents the increase in the length of the vehicle queue at the intersection per unit time when the i-th traffic light corresponding to the controlled intersection is red; Length loss L xi It indicates the amount of reduction in the length of the vehicle queue at the intersection per unit time when the light at the i-th traffic light corresponding to the controlled intersection is green.

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