A traffic signal fine management and control system

Abstract

This invention discloses a refined traffic signal control system, relating to the technical field of intelligent traffic management systems. It includes: an information retrieval module for retrieving basic timing information of each traffic light at a target intersection; and a traffic monitoring module for collecting traffic information of each lane at the intersection under the basic timing conditions of each traffic light. The traffic information includes a length increment L. zi and length reduction L xi The data analysis module is based on the length increment L at each intersection. zi and length reduction L xi Calculate the basic timing traffic variation coefficient L for the corresponding intersection. si This invention assesses and analyzes overall traffic pressure parameters before and after adjustment to coordinate and adapt traffic signal timing, thereby optimizing traffic flow, improving traffic efficiency, and ensuring balanced traffic quality across all intersections.

Description

Technical Field

[0001] This invention relates to the field of intelligent traffic management system technology, specifically a traffic signal fine-grained control system. Background Technology

[0002] Intelligent traffic management systems are comprehensive and highly automated systems designed to optimize urban traffic flow, improve traffic efficiency, reduce congestion, enhance traffic safety, and improve the travel experience of urban residents. Intelligent traffic management systems achieve adaptive signal control, where the traffic signal system adaptively adjusts according to real-time traffic conditions, optimizes the operation of traffic lights, and alleviates traffic congestion.

[0003] For example, the patent application with publication number CN108074404A, entitled "Intelligent Traffic Management System and Method," includes a traffic flow monitoring module installed at the vehicle-entry direction positions of each road at the intersection to capture image information of each direction of the current intersection; a traffic flow counting module, which is communicatively connected to the traffic flow monitoring module, to receive image information from the traffic flow monitoring system, obtain the number of vehicles based on the image information, and count the number of vehicles in real time; a data processing module, which is communicatively connected to the traffic flow counting module, to receive the vehicle count and allocate priority levels for the passage order of each lane; and a traffic signal control module, which is communicatively connected to the data processing module, to receive the lane priority levels from the data processing module and control the real-time status of the traffic signals in each direction of the intersection lanes.

[0004] In existing technologies, including the aforementioned application, intelligent traffic management systems only determine the priority of each lane based on the number of vehicles in each lane, and then adjust and control the traffic lights. Obviously, for intersections with high traffic demand, the green light time is extended to meet the passage needs of vehicles and pedestrians. However, extending the green light time will affect the signal light cycle and traffic flow of related intersections. Without comprehensive analysis and control of all channels at the intersection as a whole, congestion will occur in the lanes of related intersections. Summary of the Invention

[0005] The purpose of this invention is to provide a refined traffic signal control system to address the aforementioned shortcomings of the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a traffic signal refined control system, comprising:

[0007] The information retrieval module is used to retrieve the basic timing information of each traffic light at the target intersection and record it as T1, T2, T3...T n T nThis represents the green light duration for the controlled intersection lane corresponding to the nth traffic light;

[0008] The traffic monitoring module is used to collect traffic information for each lane at the corresponding intersection under basic signal timing conditions. This traffic information includes the length increment L. zi and length reduction L xi ;

[0009] The data analysis module is based on the length increment L of each intersection. zi and length reduction L xi Calculate the basic timing traffic variation coefficient L for the corresponding intersection. si Based on the traffic variation coefficient of each channel, the ideal timing adjustment value T' of the traffic lights at each intersection is calculated. i ;

[0010] The integrated processing module is used to identify the set of ideal timing adjustment values ​​for traffic lights, select the ideal timing adjustment values ​​of traffic lights that are greater than zero to obtain the timing increase adjustment set, and select the ideal timing adjustment values ​​of traffic lights that are less than zero to obtain the timing decrease adjustment set.

[0011] The timing reduction adjustment unit is used to retrieve the timing reduction adjustment set, obtain the ideal timing adjustment value of the traffic lights, and adjust the timing of the target traffic lights accordingly.

[0012] The timing adjustment unit is used to calculate and obtain the periodic adjustment increment Bt, calculate the traffic pressure parameters of each lane at the intersection after timing adjustment based on the periodic adjustment increment Bt and the traffic pressure parameters of each lane at the intersection under the current basic timing conditions, and perform comparative evaluation and analysis to adjust the traffic signal timing.

[0013] As a further description of the above technical solution: the calculation method for the basic timing traffic variation coefficient of intersection channels based on the length increment and length decrement of each intersection is as follows:

[0014]

[0015] Where L si And represent the basic timing traffic variation coefficient of the controlled intersection lane corresponding to the i-th traffic light, and integrate the traffic variation coefficients of each lane of the intersection and record them as: {L s1 L s2 ...L si ...L sn}

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

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

[0018] The overall adjustment increment Zt is obtained by summing the ideal timing adjustment values ​​of each traffic light in the time increment adjustment set;

[0019] The overall adjustment reduction Jt is obtained by summing the ideal timing adjustment values ​​of each traffic light in the time reduction adjustment set;

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

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

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

[0023] The correlation periodic adjustment increment Bt is used to calculate the traffic adjustment variation coefficient L for each lane at the intersection. ti The traffic adjustment coefficient L ti The calculation logic is as follows:

[0024]

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

[0026] Based on the set of traffic adjustment variation coefficients, the overall index parameter and the fluctuation index parameter are calculated, and then a weighted sum is performed to calculate the adjusted traffic pressure parameter P. L1 Adjusted traffic pressure parameter P L1 The calculation logic is as follows: in All weighting coefficients are greater than 0.

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

[0028] The traffic variation coefficients for each lane at the intersection under the current basic timing conditions are retrieved and recorded as follows: {L s1 L s2 ...L si ...L sn};

[0029] Based on the set of traffic adjustment variation coefficients, the overall index parameters and fluctuation index parameters are calculated and then weighted and summed to obtain the current traffic pressure parameter P. L0 Current traffic pressure parameter P L0 The calculation logic is as follows: in in All weighting coefficients are greater than 0.

[0030] As a further description of the above technical solution: The traffic pressure parameters of each lane at the intersection after timing adjustment based on the periodic adjustment increment Bt are calculated and compared with the traffic pressure parameters of each lane at the intersection under the current basic timing conditions, and then evaluated and analyzed to adjust the traffic light timing. Specifically:

[0031] When P L1 ≤P L0 At that time, retrieve the timing adjustment set, obtain the ideal timing adjustment value of the traffic light in the timing adjustment set, and adjust the timing of the target traffic light.

[0032] When P L1 >P L0 At that time, the timing adjustment set is retrieved to obtain the ideal timing adjustment value of the traffic lights, and the overall proportion of the timing adjustment value of each target traffic light in the timing adjustment set is calculated. Based on the overall proportion of the timing adjustment value of each target traffic light, the timing adjustment value is calculated in relation to the overall adjustment reduction Jt, and the timing of the target traffic lights is adjusted.

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

[0034] Get the time-increment adjustment set Where m < n, This represents the ideal timing adjustment value for the controlled intersection lane corresponding to the m-th traffic light;

[0035] Get the set of lane numbers {D1, D2...D...} corresponding to each traffic light in the time-increase adjustment set. m};

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

[0037] Integrate and obtain the timing adjustment set for each traffic light corresponding to the control lane in the timing adjustment set. The timing of the target traffic lights is adjusted based on the timing adjustment set.

[0038] As a further description of the above technical solution: Obtaining the time-increment adjustment set Specifically:

[0039] Retrieve the set of ideal timing adjustment values ​​for traffic lights: {T'1, T'2...T' i ...T' n};

[0040] The system iterates through and identifies each ideal timing adjustment value in the set of ideal timing adjustment values ​​for traffic lights, collects the values ​​with ideal timing adjustment values ​​greater than 0, and integrates them sequentially to obtain the set of time increment adjustments.

[0041] As a further description of the above technical solution: Length increment L zi This represents the increase in the length of the vehicle queue at the intersection controlled by the i-th traffic light per unit time when the light is red.

[0042] Length reduction L xi This represents the decrease in the length of the vehicle queue at the controlled intersection when the traffic light is green, per unit time.

[0043] In the above technical solution, the present invention provides a traffic signal refined management and control system. By analyzing and calculating traffic information of each lane at an intersection under the collected basic timing conditions, the system obtains the signal light timing adjustment values, integrates them to obtain timing reduction adjustment sets and timing increase adjustment sets, and adjusts the target traffic light timing based on the timing reduction adjustment sets. At the same time, it calculates the periodic adjustment increment based on the timing increase adjustment sets, and evaluates and analyzes the overall traffic pressure parameters before and after the adjustment to coordinate and adapt the traffic light timing, avoiding the impact on the signal light cycle and traffic flow of related intersections. This achieves integrated evaluation and control of each lane at the intersection, optimizing traffic flow, improving traffic efficiency, and ensuring balanced traffic quality across each lane at the intersection. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0045] Figure 1 This is a schematic diagram of a traffic signal fine-grained control system provided in an embodiment of the present invention. Detailed Implementation

[0046] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

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

[0048] It should also be understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0049] As used in this application specification and the appended claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determined" or "if detected [the described condition or event]" may be interpreted, depending on the context, as meaning "once determined," "in response to determination," "once detected [the described condition or event]," or "in response to detection [the described condition or event]."

[0050] Furthermore, in the description of this application and the appended claims, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0051] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0052] Please see Figure 1 This invention provides a technical solution: a traffic signal refined control system, characterized in that it includes:

[0053] The information retrieval module, connected to the intersection traffic control system, retrieves the basic timing information of each traffic light at the target intersection and records it as T1, T2, T3...T n T n This represents the green light duration for the controlled intersection lane corresponding to the nth traffic light;

[0054] Optional traffic monitoring module: This module is an image monitoring and analysis system installed at the target intersection. It collects video footage of vehicle traffic at the intersection, gathering traffic information for each lane of the intersection under basic traffic light timing conditions. The traffic information includes length increments L. zi and length reduction L xi ;

[0055] Where the length increment L zi This represents the increase in the length of the vehicle queue at the intersection controlled by the i-th traffic light per unit time when the light is red.

[0056] Length reduction L xi This represents the decrease in the length of the vehicle queue at the controlled intersection when the traffic light is green, per unit time.

[0057] The data analysis module is based on the length increment L of each intersection. zi and length reduction L xi Calculate the basic timing traffic variation coefficient L for the corresponding intersection. si The basic timing traffic variation factor is based on the length increment L of each lane at the intersection corresponding to the traffic light. zi and length reduction L xi The data represents the queue length coefficients for each lane at the intersection within one cycle of the current base timing. It should be noted that when the base timing traffic variation coefficient L...si When it is positive, it indicates that the queue length of vehicles at the controlled intersection corresponding to the i-th traffic light cannot be completely filled when the light is green. When the basic timing traffic variation coefficient L si When the value is negative, it indicates that the queue length of vehicles at the controlled intersection corresponding to the i-th traffic light has completely passed through when the green light is on, and the redundant green light time is used. The ideal timing adjustment value T' of the traffic lights at each intersection is calculated based on the traffic variation coefficient of each lane. i The calculated ideal timing adjustment values ​​of traffic lights at each intersection are integrated to obtain a set of ideal timing adjustment values ​​for traffic lights.

[0058] The integrated processing module identifies the set of ideal timing adjustment values ​​for traffic lights, selects ideal timing adjustment values ​​greater than zero to obtain the timing increase adjustment set, where all ideal timing adjustment values ​​for each traffic light in the timing increase adjustment set are positive, indicating that the green light time of the corresponding traffic light needs to be extended. The module also selects ideal timing adjustment values ​​less than zero to obtain the timing decrease adjustment set, where all ideal timing adjustment values ​​for each traffic light in the timing decrease adjustment set are negative, indicating that the green light time of the corresponding traffic light needs to be shortened.

[0059] The timing reduction adjustment unit is used to retrieve the timing reduction adjustment set, obtain the ideal timing adjustment value of the traffic lights, and adjust the timing of the target traffic lights. Specifically, it reads the ideal timing adjustment value of each traffic light in the timing reduction adjustment set and adjusts the green light time of the corresponding traffic lights based on the ideal timing adjustment value of each traffic light.

[0060] The timing adjustment unit is used to calculate and obtain the periodic adjustment increment Bt, calculate the traffic pressure parameters of each lane at the intersection after timing adjustment based on the periodic adjustment increment Bt and the traffic pressure parameters of each lane at the intersection under the current basic timing conditions, and perform comparative evaluation and analysis to adjust the traffic signal timing.

[0061] This embodiment provides a refined traffic signal control system. It analyzes and calculates traffic information from each lane of an intersection under basic timing conditions to obtain signal light timing adjustment values. This data is then integrated to obtain timing reduction adjustment sets and timing increase adjustment sets. Based on the timing reduction adjustment sets, the system adjusts the target traffic light timing. Simultaneously, based on the timing increase adjustment sets, it calculates the periodic adjustment increment and evaluates and analyzes the overall traffic pressure parameters before and after the adjustment to coordinate and adapt the traffic light timing. This avoids impacting the signal light cycles and traffic flow at related intersections, achieving integrated evaluation and control of all lanes at the intersection. This optimizes traffic flow, improves traffic efficiency, and ensures balanced traffic quality across all lanes at the intersection.

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

[0063]

[0064] Where L si And represent the basic timing traffic variation coefficient of the controlled intersection lane corresponding to the i-th traffic light, and integrate the traffic variation coefficients of each lane of the intersection and record them as: {L s1 L s2 ...L si ...L sn}

[0065] Ideal timing adjustment value T' for traffic lights i The calculation logic is as follows: And integrate to obtain the set of ideal traffic signal timing adjustment values ​​for each lane at the intersection: {T'1, T'2...T' i ...T' n}. Where T' i L represents the basic timing traffic variation coefficient L of the controlled intersection lane corresponding to the i-th traffic light. si The time when the basic timing of traffic lights needs to be adjusted, i.e. the ideal timing adjustment value of traffic lights.

[0066] The calculation of the periodic adjustment increment Bt specifically involves:

[0067] The overall adjustment increment Zt is obtained by summing the ideal timing adjustment values ​​of each traffic light in the time increment adjustment set;

[0068] The overall adjustment reduction Jt is obtained by summing the ideal timing adjustment values ​​of each traffic light in the time reduction adjustment set;

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

[0070] Traffic pressure parameters P for each lane at the corresponding intersection after timing adjustment based on the periodic adjustment increment Bt. L1 The specific calculation method is as follows:

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

[0072] The correlation periodic adjustment increment Bt is used to calculate the traffic adjustment variation coefficient L for each lane at the intersection. ti The traffic adjustment coefficient L ti The calculation logic is as follows: Among them, T' i =MAX(T' i ,0) means when T' i When T' is ≤0 i =0, indicating that when T' i >0 T' i =T' i The set of traffic adjustment variation coefficients for each lane at the intersection {L} is obtained by integrating them. t1 L t2 ...L ti ...L tn};

[0073] Based on the set of traffic adjustment variation coefficients, the overall index parameter and the fluctuation index parameter are calculated, and then a weighted sum is performed to calculate the adjusted traffic pressure parameter P. L1 Adjusted traffic pressure parameter P L1 The calculation logic is as follows: in All weighting coefficients are greater than 0. The traffic pressure parameter is a quantitative indicator that integrates two dimensions: the overall traffic pressure of each channel at the target intersection and the equilibrium state of the pressure of each channel.

[0074] Traffic pressure parameters P of each lane at the intersection under the current basic timing conditions L0 The calculation method is as follows:

[0075] The traffic variation coefficients for each lane at the intersection under the current basic timing conditions are retrieved and recorded as follows: {L s1 L s2 ...L si ...L sn};

[0076] Based on the set of traffic adjustment variation coefficients, the overall index parameters and fluctuation index parameters are calculated and then weighted and summed to obtain the current traffic pressure parameter P. L0 Current traffic pressure parameter P L0 The calculation logic is as follows: in in All weighting coefficients are greater than 0.

[0077] The traffic pressure parameters of each lane at the intersection after timing adjustment based on the periodic adjustment increment Bt are calculated and compared with the traffic pressure parameters of each lane at the intersection under the current basic timing conditions. A comparative evaluation analysis is then conducted to adjust the traffic light timing. Specifically:

[0078] When P L1 ≤P L0At that time, retrieve the timing adjustment set, obtain the ideal timing adjustment value of the traffic light in the timing adjustment set, and adjust the timing of the target traffic light.

[0079] When P L1 >P L0 At that time, the timing adjustment set is retrieved to obtain the ideal timing adjustment value of the traffic lights, and the overall proportion of the timing adjustment value of each target traffic light in the timing adjustment set is calculated. Based on the overall proportion of the timing adjustment value of each target traffic light, the timing adjustment value is calculated in relation to the overall adjustment reduction Jt, and the timing of the target traffic lights is adjusted.

[0080] Specifically, this embodiment provides a traffic signal refined management system that integrates and quantifies the overall traffic pressure of each channel at a target intersection and the equilibrium state of the pressure in each channel to obtain traffic pressure parameters. The system then evaluates, compares, and analyzes the current traffic pressure parameters with the traffic pressure parameters of each channel at the corresponding intersection after timing adjustments based on the periodic adjustment increment Bt, and makes adaptive adjustments. The system promptly evaluates the operational effect of the traffic lights after adjustment and makes corresponding adjustments and optimizations based on the evaluation results, effectively improving road traffic efficiency and alleviating traffic congestion.

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

[0082] Get the time-increment adjustment set Where m < n, This represents the ideal timing adjustment value for the controlled intersection lane corresponding to the m-th traffic light;

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

[0084] The calculation method for the timing adjustment value of the controlled intersection corresponding to the m-th traffic light is as follows: Where δ1 and δ2 are weighting coefficients, both greater than 0, and δ1 + δ2 = 1.

[0085] Integrate and obtain the timing adjustment set for each traffic light corresponding to the control lane in the timing adjustment set. The timing of the target traffic lights is adjusted based on the timing adjustment set.

[0086] The acquisition of the time-increment adjustment set Specifically:

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

[0088] The system iterates through and identifies each ideal timing adjustment value in the set of ideal timing adjustment values ​​for traffic lights, collects the values ​​with ideal timing adjustment values ​​greater than 0, and integrates them sequentially to obtain the set of time increment adjustments. Furthermore, this embodiment provides a traffic signal fine-grained control system. When calculating the timing-related adjustment value of each target traffic light based on the overall adjustment reduction Jt, it realizes the timing adjustment of traffic lights at each intersection channel by comprehensively considering the intersection geometric characteristics of each channel and the time-increase adjustment characteristics of the current basic timing, so as to ensure the continuity and smoothness of traffic flow.

[0089] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0090] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A traffic signal fine-grained control system, characterized in that, include: The information retrieval module is used to retrieve the basic timing information of each traffic light at the target intersection and record it as... , , ... ,in This represents the green light duration for the controlled intersection lane corresponding to the nth traffic light; The traffic monitoring module is used to collect traffic information for each lane at the corresponding intersection under basic signal timing conditions. This traffic information includes length increments. and length reduction The length increment This represents the increase and decrease in the queue length of vehicles at the controlled intersection corresponding to the i-th traffic light per unit time when the light is red. This represents the decrease in the length of the vehicle queue at the controlled intersection when the traffic light is green, per unit time. The data analysis module is based on the length increments of each intersection. and length reduction Calculate the basic timing traffic variation coefficient for the corresponding intersection. Based on the traffic variation coefficient of each channel, the ideal timing adjustment value of traffic lights at each intersection is calculated. ; The integrated processing module is used to identify the set of ideal timing adjustment values ​​for traffic lights, select the ideal timing adjustment values ​​of traffic lights that are greater than zero to obtain the timing increase adjustment set, and select the ideal timing adjustment values ​​of traffic lights that are less than zero to obtain the timing decrease adjustment set. The timing reduction adjustment unit is used to retrieve the timing reduction adjustment set, obtain the ideal timing adjustment value of the traffic lights, and adjust the timing of the target traffic lights accordingly. The timing adjustment unit is used to calculate and obtain the periodic adjustment increment Bt, calculate the traffic pressure parameters of each lane at the intersection after timing adjustment based on the periodic adjustment increment Bt and the traffic pressure parameters of each lane at the intersection under the current basic timing conditions, and perform comparative evaluation and analysis to adjust the traffic signal timing.

2. The traffic signal refined control system according to claim 1, characterized in that, The calculation method for the basic timing traffic variation coefficient of intersection channels based on the length increment and length decrement of each intersection is as follows: ； in And represents the basic timing traffic variation coefficient of the controlled intersection lane corresponding to the i-th traffic light. This represents the green light duration for the controlled lane at the intersection corresponding to the i-th traffic light. The traffic variation coefficients for each lane at the intersection are obtained and recorded as follows: { , ... ... } 3. The traffic signal refined control system according to claim 2, characterized in that, Ideal timing adjustment value for traffic lights The calculation logic is as follows: And integrate to obtain the set of ideal traffic signal timing adjustment values ​​for each lane at the intersection: { , ... ... } 4. The traffic signal refined control system according to claim 1, characterized in that, The calculation of the periodic adjustment increment Bt specifically involves: The overall adjustment increment Zt is obtained by summing the ideal timing adjustment values ​​of each traffic light in the time increment adjustment set; The overall adjustment reduction Jt is obtained by summing the ideal timing adjustment values ​​of each traffic light in the time reduction adjustment set; Retrieve the overall adjustment increment Zt and the overall adjustment reduction Jt, calculate the difference between the two to obtain the periodic adjustment increment Bt, where Bt = Zt - Jt.

5. The traffic signal refined control system according to claim 1, characterized in that, The calculation of the overall proportion of the timing adjustment values ​​of each target traffic light in the calculation time increase adjustment set, and the calculation of the timing-related adjustment value based on the overall proportion of the overall adjustment reduction Jt associated with the overall proportion of the timing adjustment values ​​of each target traffic light, are as follows: Get the time increment adjustment set { , ... }, where m < n, This represents the ideal timing adjustment value for the controlled intersection lane corresponding to the m-th traffic light; Get the set of lane numbers corresponding to each traffic light in the time-increase adjustment set { , ... }; The calculation method for the timing adjustment value of the controlled intersection corresponding to the m-th traffic light is as follows: ,in , All weighting coefficients are greater than 0. ; Integrate and obtain the timing adjustment set of each traffic light corresponding to the control lane in the timing adjustment set { , ... } and adjust the target traffic light timing based on the timing adjustment set.

6. A traffic signal refined control system according to claim 5, characterized in that, The acquisition of the time increment adjustment set { , ... Specifically: Retrieve the set of ideal timing adjustment values ​​for traffic lights: { , ... ... }; The system iterates through and identifies each ideal timing adjustment value in the set of ideal timing adjustment values ​​for traffic lights, obtains the values ​​with ideal timing adjustment values ​​greater than 0, and integrates them sequentially to obtain the set of time increment adjustments. , ... }

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