An outdoor information screen linkage control method and system supporting intelligent parking guidance

Abstract

The present application relates to the technical field of parking guidance, in particular to an outdoor information screen linkage control method and system supporting intelligent parking guidance, the method comprising: constructing a data preprocessing system based on a parking area to obtain parking space usage of the parking area; an outdoor information screen displays hierarchical information to a passing vehicle according to the parking space usage and marks it as a level vector, analyzes the level vector to obtain regional guidance performance of the outdoor information screen; establishes a guidance information sequence by counting the regional guidance performance of the passing vehicle corresponding to all outdoor information screens and judging sequence consistency; preliminarily adjusts the hierarchical information, rejudges sequence consistency according to the adjusted hierarchical information, analyzes the necessity of adjusting the hierarchical information in combination with the sequence consistency corresponding to the hierarchical information before adjustment, linkage controls multiple outdoor information screens, and guides the vehicle to enter a corresponding parking space. The present application realizes intelligent linkage control of the outdoor information screen, timely updates the hierarchical information, and optimizes parking planning.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of parking guidance, in particular to an outdoor information screen linkage control method and system supporting intelligent parking guidance. BACKGROUND

[0002] With the expansion of the highway network and the growth of traffic flow, the pressure on the parking lot of the service area of the highway increases; and the service area is an important node functional area of the highway, and its parking lot needs to bear the service functions of vehicle parking, driver resting, etc., and meet the parking needs of various types of vehicles. However, the traditional parking lot management mode lacks intelligence and efficiency, and cannot respond to dynamic traffic changes in time, resulting in low parking space utilization, disorderly parking order, poor user experience, etc. For example, during holidays and peak long-distance transportation, there will be insufficient parking spaces, vehicle queues, and disorderly parking, etc., which will exacerbate traffic congestion and regional management challenges.

[0003] Further, based on modern information technology and intelligent management means, a smart parking guidance system is proposed, which can monitor the use of parking spaces, traffic flow and vehicle entry and exit dynamics in real time, and provide accurate parking guidance information for drivers in combination with big data analysis and other strategies. This technology can improve parking space utilization, alleviate congestion, optimize vehicle entry and exit flow design, and improve overall parking lot efficiency. The smart parking guidance system mainly relies on outdoor information screens to guide vehicle parking information. It is mainly set at the entrance of the parking lot and the branch of the internal road, etc., for the display of text or icons of the parking space capacity, real-time traffic flow and route information of the parking space, etc.

[0004] However, for vehicles actually entering the internal road of the service area, their route and final parking position are fuzzy control before they actually occur. That is, the prompt information of the outdoor information screen in a certain area can only guide the vehicle's route to a certain extent, and the direction of the prompt information can only determine the most likely direction of the vehicle, but cannot accurately obtain the vehicle's position information during the journey, resulting in low guidance accuracy and inability to optimize the traffic flow of the parking lot. SUMMARY

[0005] In order to solve the technical problems of the existing smart parking guidance system, such as fuzzy control of vehicles, low guidance accuracy, and low guidance efficiency, which leads to low utilization of parking spaces, the purpose of the present application is to provide an outdoor information screen linkage control method supporting intelligent parking guidance, and the technical solution is as follows:

[0006] A data preprocessing system is constructed based on the parking area to obtain the parking space usage of the parking area;

[0007] The data preprocessing system comprises an outdoor information screen, which displays hierarchical information to passing vehicles according to the parking space usage and marks the hierarchical information as a level vector, and analyzes the level vector to obtain the regional guidance performance of the outdoor information screen;

[0008] The guidance information sequence is established by counting the regional guidance performance of all the outdoor information screens passed by the vehicle, and the sequence consistency is determined by the guidance information sequence;

[0009] The hierarchical information is preliminarily adjusted, the sequence consistency is re-determined according to the adjusted hierarchical information, the necessity of adjusting the hierarchical information is analyzed in combination with the sequence consistency corresponding to the hierarchical information before adjustment, and the multiple outdoor information screens are linked and controlled to guide the vehicle to enter the corresponding parking space.

[0010] Preferably, the data preprocessing system comprises a real-time parking space usage detection unit, a data analysis and prediction unit, a four-level guidance unit, a parking allocation plan unit and a variable parking space management unit, each of which is controlled by a central processor, and the usage of the parking spaces in the parking area is obtained based on the received data of the central processor.

[0011] Preferably, the four-level guidance unit comprises an outdoor information screen at the entrance of the parking area, a guide sign at the entrance of the parking area, a guide system inside the parking area and a parking space indicator;

[0012] The outdoor information screen is used to display the parking space usage status and the predicted congestion situation of the parking area;

[0013] The guide sign is used to indicate the driver to choose to enter or bypass the corresponding parking area according to the parking space usage status;

[0014] The guide system and the parking space indicator are used to guide the driver to reach the reserved idle parking space.

[0015] Preferably, the hierarchical information is in turn the parking area, different sub-parking areas in the parking area, different columns in the sub-parking area and different parking spaces in the column.

[0016] Preferably, the hierarchical information is displayed to the passing vehicle according to the parking space usage and marked as a level vector, and the regional guidance performance of the outdoor information screen is obtained by analyzing the level vector, which comprises:

[0017] The hierarchical information of any vehicle passing through all the outdoor information screens is collected and marked as a level vector, and the hierarchical coefficient is determined according to the level vectors corresponding to the adjacent two outdoor information screens;

[0018] The guidance area influence coefficient of the vehicle passing through the outdoor information screen is obtained based on the hierarchical coefficient, and the regional guidance performance of the corresponding outdoor information screen is analyzed.

[0019] Preferably, the guide area influence coefficient of the vehicle passing through the outdoor information screen is obtained based on the hierarchical coefficient, specifically:

[0020] A preset sampling period is set, the hierarchical coefficients of all vehicles passing through the outdoor information screen in the sampling period are counted, the mean value of the hierarchical coefficients is determined, the hierarchical coefficients corresponding to the current vehicle passing through the current outdoor information screen, the adjacent previous outdoor information screen and the adjacent next outdoor information screen are obtained respectively, and the guide area influence coefficient of the current vehicle passing through the current outdoor information screen is determined in combination with the mean value of the hierarchical coefficients.

[0021] Preferably, the guide information sequence is established by counting the area guide performance of the vehicle passing through all outdoor information screens, and the sequence consistency is judged by the guide information sequence, including:

[0022] The guide information sequence of the current vehicle is established by arranging the guide area influence coefficients corresponding to all outdoor information screens passed by any vehicle according to the time sequence order;

[0023] The position weight of the outdoor information screen is obtained, and the sequence consistency of the current outdoor information screen position of the guide information sequence corresponding to the current vehicle is determined.

[0024] Preferably, the sequence consistency of the current outdoor information screen position of the guide information sequence corresponding to the current vehicle is determined, specifically:

[0025] The guide area influence coefficients of the current vehicle passing through the current outdoor information screen and the adjacent previous outdoor information screen are obtained respectively, the number of outdoor information screens passed by the current vehicle before passing through the current outdoor information screen is counted, and the sequence consistency of the current outdoor information screen position of the guide information sequence corresponding to the current vehicle is obtained in combination with the position weight.

[0026] Preferably, the hierarchical information is preliminarily adjusted, the sequence consistency is re-judged according to the adjusted hierarchical information, the necessity of adjusting the hierarchical information is analyzed in combination with the sequence consistency corresponding to the hierarchical information before adjustment, the multiple outdoor information screens are linkage controlled, and the vehicle is guided to enter the corresponding parking space, including:

[0027] The hierarchical information corresponding to the outdoor information screen is reduced, the reduced and reduced sequence consistency means of the guide information sequence corresponding to all vehicles passing through the outdoor information screen are determined respectively, and the adjustment weight of the outdoor information screen is obtained;

[0028] An adjustment threshold is set, and the adjustment weight is compared to judge whether to accept the adjusted hierarchical information;

[0029] If yes, the hierarchical information of the corresponding outdoor information screen is adjusted, the multiple outdoor information screens are linkage controlled, and the vehicle is guided to enter the corresponding parking space.

[0030] To solve the above problems, the application further provides an outdoor information screen linkage control system supporting intelligent parking guidance, comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other through the communication bus, and the processor calls the logic instructions in the memory to execute the outdoor information screen linkage control method supporting intelligent parking guidance.

[0031] The application has the following beneficial effects:

[0032] 1. The parking space usage is obtained through the outdoor information screen comprehensive data preprocessing system, and then a hierarchical information is constructed to display the accurate parking space remaining, real-time traffic flow and driving route information in real time, which can help the driver to identify the available parking space, reduce the time for searching the parking space and effectively reduce the congestion in the parking area; the outdoor information screen passed by the vehicle is analyzed, that is, multiple outdoor information screens are linked to analyze the interaction between the position information change of the vehicle in the driving process and the prompt content of the outdoor information screen, so that the guidance content of the outdoor information screen can be dynamically adjusted, the vehicle can be more targeted guided to enter the parking space, the flexibility is stronger, and the guidance effect is improved; and a guidance information sequence is established, the sequence consistency is analyzed, multiple outdoor information screens are linked for analysis, that is, the intelligent linkage control is implemented on the outdoor information screen, which is helpful for timely updating and displaying the hierarchical information, ensures that the driver obtains the most relevant guidance information at different stages, optimizes the planning of the parking route, improves the guidance accuracy and efficiency of the vehicle in the parking area, maximizes the utilization rate of the parking space, and finally improves the overall traffic flow and user experience of the service area.

[0033] 2. The outdoor information screen linkage control system supporting intelligent parking guidance has the same beneficial effects as the outdoor information screen linkage control method supporting intelligent parking guidance, and details are not repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions and advantages of the embodiments of the application or the prior art, the drawings needed in the embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0035] Figure 1 The step flow chart of the outdoor information screen linkage control method supporting intelligent parking guidance provided by an embodiment of the application;

[0036] Figure 2The structural schematic diagram of the outdoor information screen of an outdoor information screen linkage control method for supporting intelligent parking guidance provided by an embodiment of the present application. DETAILED DESCRIPTION

[0037] In order to further illustrate the technical means and effects taken by the present application to achieve the predetermined object of the present application, the specific embodiments, structures, features and effects of the outdoor information screen linkage control method and system for supporting intelligent parking guidance according to the present application are described in detail as follows in combination with the drawings and preferred embodiments. In the following description, different "one embodiment" or "another embodiment" do not necessarily refer to the same embodiment. In addition, the specific features, structures or characteristics in one or more embodiments can be combined in any suitable form.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs.

[0039] The specific scheme of the outdoor information screen linkage control method and system for supporting intelligent parking guidance provided by the present application is specifically described below in combination with the drawings.

[0040] When the outdoor information screen of the existing intelligent parking guidance system guides the vehicle, the actual progress route and parking space do not belong to fuzzy control, and only a certain degree of reference guidance can be provided for the vehicle, that is, the most possible forward direction of the vehicle is determined, and the actual vehicle guidance effect cannot be ensured. Therefore, the influence of the hierarchical information of the outdoor information screen at the corresponding position on the progress route of the corresponding vehicle is analyzed, the intelligent linkage control of the multi-position outdoor information screen is realized, and the intelligent parking guidance accuracy and efficiency of the vehicle in the parking area are improved.

[0041] Please refer to Figure 1 and Figure 2 which show the step flowchart of the outdoor information screen linkage control method for supporting intelligent parking guidance provided by the first embodiment of the present application and the structural schematic diagram of the outdoor information screen, and the method comprises:

[0042] Step S1: constructing a data preprocessing system based on a parking area, and acquiring the parking space usage of the parking area;

[0043] Step S2: the data preprocessing system comprises an outdoor information screen, the outdoor information screen displays hierarchical information to the passing vehicle according to the parking space usage, and marks it as a level vector, and analyzes the level vector to obtain the regional guidance performance of the outdoor information screen;

[0044] Step S3: establishing a guidance information sequence by counting the regional guidance performance of the vehicle passing all outdoor information screens, and judging the sequence consistency through the guidance information sequence;

[0045] Step S4: preliminary adjustment of the hierarchical information, re-determination of the sequence consistency according to the adjusted hierarchical information, combined with the sequence consistency of the hierarchical information before adjustment to analyze the necessity of hierarchical information adjustment, and linkage control of multiple outdoor information screens to guide vehicles to enter the corresponding parking space.

[0046] For better illustration, the outdoor information screen refers to a component in the intelligent guidance parking system in the prior art, which is a modern information display device, usually near the parking area, installed in the outdoor environment, used to provide real-time information in the corresponding parking area to the public, so that the driver can quickly obtain the required information to improve the parking efficiency and travel convenience.

[0047] As an optional embodiment, the outdoor information screen linkage control method supporting intelligent parking guidance proposed in the application is applicable to service areas of expressways, multi-level parking lots covered by large commercial areas, multiple parking lots covered by traffic hubs and scenic spots, and other parking areas that need to provide parking guidance.

[0048] Further, the data preprocessing system includes a real-time parking space utilization rate detection unit, a data analysis and prediction unit, a four-level guidance unit, a parking allocation plan unit, and a variable parking space management unit, each of which is controlled by a central processor based on the received data to obtain the use of parking spaces in the parking area.

[0049] It can be explained that the real-time parking space utilization rate detection unit is composed of video monitoring equipment and parking sensors, the parking sensors are installed on each parking space in the parking area, and the use of each parking space is collected in real time, i.e. whether the parking space is occupied, the occupation time and other related information, and transmitted to the database of the central processor; the data analysis and prediction unit is used to obtain the real-time traffic information of multiple sections between the service area, i.e. the parking area, for predicting the traffic information that may arrive at the service area, i.e. analyzing the probability, the larger the traffic flow, the greater the parking demand of the corresponding service area; the parking allocation plan unit is used to develop a corresponding parking plan for vehicles according to the relevant data of the four-level guidance unit, and when the parking space is tight or a special event occurs, a parking allocation plan can be quickly developed and executed to ensure the order and efficiency of the parking area; the variable parking space management unit flexibly adjusts the purpose and quantity of parking spaces according to the actual demand of the parking area, which meets the parking demand of the corresponding scene according to subsequent data analysis.

[0050] Further, the four-level guidance unit includes an outdoor information screen at the entrance of the parking area, a guide sign at the entrance of the parking area, a guidance system inside the parking area, and a parking space indicator.

[0051] The outdoor information screen is used to display the parking space usage status and the predicted congestion situation of the parking area;

[0052] The guide sign is used to instruct the driver to choose to enter or bypass the corresponding parking area according to the parking space usage status;

[0053] The guide system and the parking space indicator are used to guide the driver to reach the reserved idle parking space.

[0054] It can be explained that the main function of the outdoor information screen is to display the parking space usage status in the parking area in real time, and to provide the predicted congestion situation, so that the driver can know the relevant information in advance before entering the parking area, and make reasonable parking selection; the guide sign refers to the guide signs or guide symbols such as markings of the service area, which provide clear instructions to the driver according to the parking space usage status, helping him to decide whether to directly enter the current parking area corresponding to the outdoor information screen or bypass the next parking area to avoid disorderly waiting and congestion caused by full parking spaces in the current parking area; the guide system and the parking space indicator work together to accurately guide the driver to reach the pre-reserved idle parking space, ensuring efficient and convenient parking process, wherein the guide system refers to the information guide system corresponding to the outdoor information screen, which is arranged at the turning positions such as the branch and the entrance in the parking area; through the cooperation of each component in the four-level guide unit, the parking process is optimized to improve the use efficiency and user experience of the parking lot.

[0055] It can be understood that due to the ambiguity of vehicle position acquisition and outdoor information screen guidance, the vehicle position information in the process cannot be accurately acquired, and the content covered by the outdoor information screen includes guidance of different levels and areas, so the analysis of the progress in the process is based on the change of the vehicle position corresponding to the level information of the outdoor information screen corresponding to the outdoor information screen, to define the information linkage change performance of the outdoor information screen guidance process, realize the analysis of the guiding effect of the corresponding outdoor information screen setting position, and plan the parking route to avoid causing large-area congestion and affecting the utilization rate of parking spaces, and then realize the accurate control of the linkage of the outdoor information screen.

[0056] Further, the level information is in turn the parking area, different sub-parking areas in the parking area, different columns in the sub-parking area, and different parking spaces in the column.

[0057] It can be explained that the parking area refers to the overall range; the sub-parking area refers to different specific sub-areas in the parking area, i.e. the division of truck, car and other vehicle types or position division for the parking area with large area; the column refers to the division of the sub-parking area, which is similar to the grid array arrangement; the parking space refers to the parking space corresponding to each column for management, and each parking space corresponds to a unique number to ensure that the vehicle can be more accurately found when guiding the vehicle to park.

[0058] To clarify, outdoor information screens are used to display information about parking areas at different levels. Here, "level" refers to the information corresponding to different ranges of parking areas. For example, the range corresponding to the remaining parking spaces in all parking areas is the largest, while the range corresponding to the directional icons for directions to a specific car parking space is the smallest. To better illustrate this, let's take an example of level information. Suppose the current parking area, i.e., the service area, has 50 remaining parking spaces, and its sub-parking area 'a' has 20 remaining parking spaces. The ranges corresponding to the 50 remaining parking spaces and the 20 remaining parking spaces are different; this corresponds to a level. Therefore, it can be understood that the level corresponding to the directional icons for sub-parking area 'a' and the directional icons indicating the remaining parking spaces in sub-parking area 'a' belong to the same level.

[0059] For vehicles that actually enter the service area's internal roads, the prompts displayed on the outdoor information screens along their route, i.e., the hierarchical information, are actually a sample of the fuzzy control effect on the vehicle's route. Therefore, to achieve intelligent linkage control of multiple information screens, it is necessary to further define the regional guidance performance of the information screens.

[0060] Further, step S2 includes:

[0061] Step S21: Collect the hierarchical information of any vehicle passing through all outdoor information screens and mark it as a level vector. Determine the hierarchical coefficient based on the level vectors corresponding to two adjacent outdoor information screens.

[0062] To better illustrate this, we will analyze the hierarchical display of information displayed on outdoor information screens when a single vehicle passes by, specifically focusing on the [number]th [vehicle]. The vehicle passed the The hierarchical information of each outdoor information screen was analyzed.

[0063] Specifically, the first The vehicle passed the The hierarchical information of each outdoor information screen is labeled as a level vector, denoted as... In this system, included level information is denoted as 1, and excluded level information is denoted as 0. The four parking ranges corresponding to the level information are denoted as the first level, the second level, the third level, and the fourth level, respectively. Assuming a level vector... Including the first and fourth levels, it is represented as follows: For an outdoor information screen at a single location, the more hierarchical information it contains, the more prompts it provides at that location, and the larger the area it guides. However, this is not conducive to the rapid guidance of vehicles. Therefore, the actual location guidance performance needs to be analyzed by examining the hierarchical information of outdoor information screens preceding and following the current screen. This involves combining the hierarchical information of historical outdoor information screens passed by with the current screen's hierarchical information to provide effective hierarchical guidance, thus obtaining the current screen's hierarchical coefficient. The corresponding calculation formula is as follows:

[0064]

[0065] in, Indicates the first The first vehicle passed by The hierarchy coefficient of each information screen; Indicates the first The first vehicle passed by The level vector of each information screen; Indicates the first The first vehicle passed by The level vector of each information screen; This represents the normalization function; here... This represents the calculation of the magnitude of a vector.

[0066] It can be explained that the hierarchy coefficient is used to measure the closeness of the relationship between the hierarchical information between two adjacent outdoor information screens, so as to reflect the hierarchical differences between outdoor information screens. This represents the magnitude of the subtraction of two level vectors. After normalization, the larger this value, the more hierarchical information it contains. Moreover, this hierarchical information is not limited to the corresponding level size. As long as it exists, it proves that more guidance information is contained. That is, when this value is larger, there is more guidance information in this case. Similarly, the level coefficient when any vehicle passes any outdoor information screen is obtained.

[0067] Step S22: Based on the hierarchical coefficient, obtain the guidance area influence coefficient of vehicles passing through the outdoor information screen, and analyze the guidance area influence coefficient to obtain the corresponding area guidance performance of the outdoor information screen.

[0068] It is illustrated that some bifurcations can show multi-directional information from the hierarchical coefficients of all passing outdoor information screens of a single vehicle, which can have certain random influences on the actual vehicle position judgment, and the random influences mainly manifest as fluctuations of the hierarchical coefficients, i.e. the outdoor information screen guiding area is not fixed and cannot form effective guidance, which illustrates that the probability of the driver of the vehicle facing the multiple hierarchical information of the outdoor information screen selecting multiple levels is similar, for example, the guiding information provided by the outdoor information screen shows that the left and right two sub-parking areas can be parked, and there are corresponding parking spaces, so the driver can choose at will, so the selection probability is similar.

[0069] Further, in step S22, the guiding area influence coefficient of the vehicle passing the outdoor information screen is obtained based on the hierarchical coefficient, specifically:

[0070] A preset sampling period is set, the hierarchical coefficients of all vehicles passing the outdoor information screen in the sampling period are counted, the mean value of the hierarchical coefficients is determined, the hierarchical coefficients corresponding to the current outdoor information screen, the adjacent previous and adjacent subsequent outdoor information screens passed by the current vehicle are obtained, and the guiding area influence coefficient of the current vehicle passing the current outdoor information screen is determined in combination with the mean value of the hierarchical coefficients.

[0071] Preferably, in the embodiment, the sampling period is set to 30 minutes, which can be adjusted according to actual conditions.

[0072] Specifically, still taking the first outdoor information screen as an example, the hierarchical coefficients of all vehicles passing the first outdoor information screen in the sampling period are counted, and the mean value of the hierarchical coefficients is determined by ratio with the total number of vehicles, denoted as The vehicle passing the first outdoor information screen is illustrated, the hierarchical coefficients of all vehicles passing the first outdoor information screen in the sampling period are counted, and the mean value of the hierarchical coefficients is determined by ratio with the total number of vehicles, denoted as ; and the guiding area influence coefficient of the current vehicle passing the current outdoor information screen is determined, and the corresponding calculation formula is:

[0073]

[0074] , wherein, the guiding area influence coefficient of the first vehicle passing the first information screen is denoted as , the hierarchical coefficient of the first vehicle passing the first information screen is denoted as , the hierarchical coefficient of the first vehicle passing the first information screen is denoted as , the hierarchical coefficient of the first vehicle passing the first information screen is denoted as ​​​​​​​​​​​represents the average of the level coefficients of all vehicles passing the represents a normalization function; represents an absolute value symbol.

[0075] It can be explained that 2 in the calculation formula of the guide area influence coefficient is used to calculate the difference number of the numerator average; represents the variation of the guide area before and after the outdoor information screen, the larger the value, the more obvious the range level change of the vehicle entering the service area at the outdoor information screen under the guidance of the level information of the outdoor information screen, and the more effective the information guidance of the current outdoor information screen.

[0076] It can be understood that, for the vehicle actually entering the internal road of the service area, the prompt information of the outdoor information screen passed by the vehicle actually reflects the sampling embodiment of the fuzzy control effect of the vehicle route, and the outdoor information screen information obtained from the vehicle position variation needs to be further analyzed in the driving process to define the information linkage variation performance of the outdoor information screen guidance process; therefore, the actual linkage effect of the outdoor information screen needs to be considered according to the entire vehicle driving route, that is, the more consistent the guidance performance of the outdoor information screen corresponding to multiple position nodes, the more the position guidance information of the level information on the outdoor information screen can help the driver to correctly find the parking space.

[0077] Further, in step S3, comprising:

[0078] Step S31: establishing the guide information sequence of the current vehicle according to the time sequence arrangement of the guide area influence coefficients corresponding to all outdoor information screens passed by any vehicle.

[0079] It can be explained that for the guide information sequence of any vehicle, the position nodes corresponding to multiple outdoor information screens will have certain guidance effect, the difference lies in that they are in different positions of the guide information sequence, the closer to the rear end of the guide information sequence, the smaller the area position can be selected, and the smaller the guidance effect of the outdoor information screen level information; therefore, the position of each outdoor information screen is analyzed to determine the sequence consistency.

[0080] Step S32: obtaining the position weight of the outdoor information screen, and determining the sequence consistency of the current outdoor information screen position of the guide information sequence corresponding to the current vehicle.

[0081] ​The explanation is that a Gaussian function is used to obtain the position weight of the outdoor information screen. That is, the further back in the guidance information sequence, the smaller the weight value. In other words, the value of the Gaussian function decreases exponentially as the number of outdoor information screens behind the vehicle increases. This indicates that the more the screen is located at the end of the guidance information sequence, the less selectivity there is, and thus the less guiding effect it has. The guiding effect of the outdoor information screen can be adjusted more reasonably by using position weights.

[0082] Further, in step S32, determining the sequence consistency of the current outdoor information screen position within the guidance information sequence corresponding to the current vehicle specifically involves:

[0083] The influence coefficients of the guidance area when the current vehicle passes the current outdoor information screen and the adjacent previous outdoor information screen are obtained respectively. The number of outdoor information screens before the current vehicle passes the current outdoor information screen is counted. Combined with the position weight, the sequence consistency of the current outdoor information screen position of the guidance information sequence corresponding to the current vehicle is obtained.

[0084] Specifically, the corresponding calculation formula is:

[0085]

[0086] in, Indicates the first The first vehicle guidance information sequence Sequence consistency of the locations of each outdoor information screen; Indicates the first The vehicle passed the first The influence coefficient of the guidance area of ​​an outdoor information screen; Indicates the first The vehicle passed the first The influence coefficient of the guidance area of ​​an outdoor information screen; Indicates the first The first vehicle guidance information sequence The number of outdoor information screens passed in front of each outdoor information screen location. Indicates the first The location weight of each outdoor information screen; Indicated by An exponential function with base 0; Represents the absolute value symbol.

[0087] It can be explained that, similarly, the sequence consistency of all vehicle guidance information sequences can be obtained. For the location of the outdoor information screen in the guidance information sequence, the value of sequence consistency is used to indicate the contribution of the guidance information of the outdoor information screen to the final entry of the vehicle into the corresponding parking space. The greater the sequence consistency, the greater the role of the guidance performance of the hierarchical information of the corresponding outdoor information screen in the guidance process of the vehicle, and thus the more accurate the outdoor information screen is in obtaining the information needed by the vehicle to reach the parking space.

[0088] It can be understood that based on the sequence consistency of all vehicle guidance information sequences, the guidance condition evaluation of the outdoor information screen in the service area is realized, and the linkage control of the outdoor information screen cannot simply adjust the content of a single outdoor information screen. It is necessary to perform multi-position adjustment according to the different contribution degrees of the existing guidance information sequences to achieve the best performance and improve the intelligent parking guidance accuracy and efficiency of the vehicle in the service area.

[0089] Further, in step S4, it includes:

[0090] Step S41: Reduce the corresponding hierarchical information of the outdoor information screen, respectively determine the sequence consistency average of all vehicle guidance information sequences before and after the reduction, and obtain the adjustment weight of the outdoor information screen.

[0091] It is explained that according to the sequence consistency of all vehicle guidance information sequences, the corresponding adjustment is performed, that is, the adjustment of the guidance condition of the outdoor information screen to the parking space in the guidance process of all vehicles.

[0092] Specifically, based on the hierarchical information determined in the foregoing step S21 It is explained that it is reduced, that is, the hierarchical information of the first outdoor information screen is reduced by one level, and the that is, the guidance effect is improved by reducing the guidance range, but it is necessary to determine whether the adjusted hierarchical information is useful.

[0093] Then, according to the hierarchical information after the reduction of one level, the sequence consistency of all vehicle guidance information sequences in the 30-minute sampling period is reacquired, and the sequence consistency average before and after the reduction is respectively determined, that is, the ratio of the total number of sequence consistencies of all vehicle guidance information sequences in the sampling period to the total number of vehicles, in order to analyze the adjustment necessity, that is, to determine the adjustment weight of the outdoor information screen. The corresponding calculation formula is:

[0094]

[0095] Among them, indicates the adjustment weight of the first outdoor information screen; indicates the sequence consistency average of all vehicle guidance information sequences through the first outdoor information screen; indicates the sequence consistency average of all vehicle guidance information sequences through the first outdoor information screen after adjustment; indicates the normalization function; indicates the absolute value symbol.

[0096] Step S42: Set an adjustment threshold value, compare with the adjustment weight, and determine whether to accept the adjustment level information.

[0097] Preferably, in the present embodiment, the adjustment threshold value is set to 0.55, which can be adjusted according to actual conditions.

[0098] Specifically, based on the same reasoning as step S41, the adjustment weight of all outdoor information screens is obtained, and compared with the adjustment threshold value to determine whether to accept the adjustment level information; taking the adjustment weight of the first outdoor information screen as an example, if , it means that the first outdoor information screen accepts the adjustment of the level information; otherwise, if , it means that the first outdoor information screen does not accept the adjustment of the level information, so the outdoor information screen maintains the level information before being zoomed out.

[0099] Step S43: If yes, adjust the level information of the corresponding outdoor information screen, and control multiple outdoor information screens in linkage to guide the vehicle to enter the corresponding parking space.

[0100] It is explained that based on step S42, all outdoor information screens that accept the adjustment of the level information in all vehicle guidance information sequences are determined, and then the level information of the corresponding outdoor information screen is adjusted according to step S41. The positions of the multiple outdoor information screens after adjustment contain the level information that can be in the linkage control of the parking area, achieving the optimal parking space guidance effect.

[0101] Preferably, on the basis of achieving the optimal parking space guidance, the parking space usage rate of the corresponding parking area is reacquired by the real-time parking space usage rate detection unit, and different emergency plans are formulated by the parking allocation plan unit, such as starting a first-level emergency plan when the parking space usage rate prediction reaches 80%, implementing temporary traffic control and parking space diversion to relieve parking pressure; starting a second-level plan when the parking space usage rate prediction reaches 90%, suspending part of the vehicles from entering the parking area and increasing the guidance of the traffic signal to ensure the order in the parking area; starting a third-level plan when the parking space usage rate prediction reaches 100%, closing the parking area, i.e. the current service area entrance, guiding the vehicle to park in the adjacent service area to avoid traffic congestion caused by vehicle saturation; in other words, through the fine and hierarchical emergency plan management, different levels of parking demand pressure can be effectively coped with, and the smoothness and efficiency of the parking service can be ensured.

[0102] ​​​The variable parking space management unit uses the vehicle flow information predicted by the data analysis and prediction unit to the service area, and combines the past historical vehicle flow information, dynamically adjusts the types and quantities of parking spaces in different time periods, wherein the determination of different time periods is based on a large amount of historical vehicle flow information, the peak period generally refers to the time period when vehicles use the parking area, i.e., the service area most frequently, which usually occurs during the workday commuting time, holidays or special activities, at this time, the demand for parking spaces will significantly increase, and then in the peak period, the number of small car parking spaces is increased to meet the high demand of small vehicles; the low peak period refers to the time period when the vehicle uses the service area less frequently, which is usually the non-commuting time of the workday or the late night period, at this time, the demand for parking spaces is relatively low, in the low peak period, the types of parking spaces are reduced, and the parking space configuration is adjusted to adapt to the parking of freight vehicles and other large vehicles that need to match large vehicle parking spaces; so as to better utilize the parking resources, ensure sufficient parking space supply in the peak period, avoid waste of parking space limitation in the low peak period, improve parking efficiency, and meet the needs of different time periods and different types of vehicles.

[0103] It can be understood that the parking space usage is obtained through the outdoor information screen comprehensive data preprocessing system, and then a hierarchical information is constructed to display accurate parking space balance, real-time traffic flow and driving route information in real time, which can help drivers identify available parking spaces, reduce the time of searching for parking spaces, and effectively reduce the congestion in the parking area; and the outdoor information screen through which the vehicle passes is analyzed, that is, multiple outdoor information screens are linked, the interaction between the position information change of the vehicle in the driving process and the prompt content of the outdoor information screen is analyzed, the guiding content of the outdoor information screen can be dynamically adjusted, the vehicle can be more targetedly guided into the parking space, the flexibility is higher, and the guiding effect is improved; and a guiding information sequence is established, the sequence consistency is analyzed, multiple outdoor information screens are linked for analysis, that is, the outdoor information screen is controlled intelligently, which is helpful for timely updating and displaying of the hierarchical information, ensures that the drivers obtain the most relevant guiding information in different stages, optimizes the planning of the parking route, improves the guiding accuracy and efficiency of the vehicles in the parking area, maximizes the utilization rate of the parking spaces, and finally improves the overall traffic flow and user experience of the service area.

[0104] The second embodiment of the present application provides an outdoor information screen linkage control system supporting intelligent parking guidance, which comprises a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other through the communication bus, the processor calls the logical instructions in the memory to execute the outdoor information screen linkage control method supporting intelligent parking guidance provided by any one of the preceding embodiments; the system has the same beneficial effects as the outdoor information screen linkage control method supporting intelligent parking guidance provided by the preceding embodiment, and details are not repeated here.

[0105] It can be understood that the outdoor information screen linkage control system supporting intelligent parking guidance needs to use the outdoor information screen linkage control method supporting intelligent parking guidance provided by any of the foregoing embodiments when in operation, and thus, whether the system is integrated with program data or different hardware is configured to produce similar functions to the effects achieved by the present application, all fall within the protection scope of the present application.

[0106] It should be noted that the above-mentioned sequence of the embodiments of the present application is only for description, and does not represent the advantages and disadvantages of the embodiments. The processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multi-task processing and parallel processing are also possible or can be advantageous.

[0107] Each of the embodiments in the specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other. Each embodiment mainly describes the differences from other embodiments.

Claims

1. An outdoor information screen linkage control method supporting intelligent parking guidance, characterized by, The method comprises: Based on the parking area construction data preprocessing system, the parking space usage of the parking area is obtained; The data preprocessing system comprises an outdoor information screen, which displays hierarchical information to passing vehicles according to the parking space usage and marks it as a level vector, and analyzes the level vector to obtain the regional guidance performance of the outdoor information screen; The regional guidance performance corresponding to all outdoor information screens is established by the guidance information sequence, and the sequence consistency is judged by the guidance information sequence; The hierarchical information is preliminarily adjusted, the sequence consistency is re-judged according to the adjusted hierarchical information, the necessity of adjusting the hierarchical information is analyzed in combination with the sequence consistency corresponding to the hierarchical information before adjustment, a plurality of outdoor information screens are linked and controlled, and vehicles are guided to enter the corresponding parking spaces; The hierarchical information is preliminarily adjusted, the sequence consistency is re-judged according to the adjusted hierarchical information, the necessity of adjusting the hierarchical information is analyzed in combination with the sequence consistency corresponding to the hierarchical information before adjustment, a plurality of outdoor information screens are linked and controlled, and vehicles are guided to enter the corresponding parking spaces; The hierarchical information is preliminarily adjusted, the sequence consistency is re-judged according to the adjusted hierarchical information, the necessity of adjusting the hierarchical information is analyzed in combination with the sequence consistency corresponding to the hierarchical information before adjustment, a plurality of outdoor information screens are linked and controlled, and vehicles are guided to enter the corresponding parking spaces; The hierarchical information is preliminarily adjusted, the sequence consistency is re-judged according to the adjusted hierarchical information, the necessity of adjusting the hierarchical information is analyzed in combination with the sequence consistency corresponding to the hierarchical information before adjustment, a plurality of outdoor information screens are linked and controlled, and vehicles are guided to enter the corresponding parking spaces; The data preprocessing system comprises a real-time parking space utilization rate detection unit, a data analysis and prediction unit, a four-level guidance unit, a parking allocation plan unit and a variable parking space management unit, each unit is controlled by a central processor, and the use of parking spaces in the parking area is obtained based on the received data of the central processor. The four-level guidance unit comprises an outdoor information screen at the entrance of the parking area, a guide sign at the entrance of the parking area, a guide system inside the parking area and a parking space indicator; 2. The outdoor information screen linkage control method supporting intelligent parking guidance according to claim 1, characterized in that, The outdoor information screen is used to display the parking space usage state and the predicted congestion situation of the parking area; 3. The outdoor information screen linkage control method supporting intelligent parking guidance according to claim 2, characterized in that, The guide sign is used to indicate the driver to select to enter or bypass the corresponding parking area according to the parking space usage state; The guide system and the parking space indicator are used to guide the driver to the reserved idle parking space. The hierarchical information is in turn the parking area, different sub-parking areas in the parking area, different columns in the sub-parking area, and different parking spaces in the column. The regional guidance performance corresponding to all outdoor information screens is established by the guidance information sequence, and the sequence consistency is judged by the guidance information sequence, comprising:

4. The outdoor information screen linkage control method supporting intelligent parking guidance according to claim 1, characterized by, The guidance information sequence of the current vehicle is established by arranging the guidance area influence coefficients corresponding to all outdoor information screens passed by any vehicle according to the time sequence order; 5. The outdoor information screen linkage control method of claim 4, wherein, The position weight of the outdoor information screen is obtained, and the sequence consistency of the current outdoor information screen position of the guidance information sequence corresponding to the current vehicle is determined. ​ ​ 6. The outdoor information screen linkage control method of claim 5, wherein, Determine the sequence consistency of the current outdoor information screen position of the guide information sequence corresponding to the current vehicle, specifically: Respectively get the guide area influence coefficient of the current vehicle passing through the current outdoor information screen and the adjacent previous outdoor information screen, count the number of outdoor information screens passed through by the current vehicle before the current outdoor information screen, and combine the position weight to get the sequence consistency of the current outdoor information screen position of the guide information sequence corresponding to the current vehicle.

7. The outdoor information screen linkage control method supporting intelligent parking guidance according to claim 1, characterized by, Preliminary adjustment of hierarchical information, re-determine the sequence consistency according to the adjusted hierarchical information, combined with the sequence consistency corresponding to the hierarchical information before adjustment to analyze the necessity of adjusting the hierarchical information, linkage control multiple outdoor information screens, guide the vehicle to enter the corresponding parking space, including: Narrow the hierarchical information corresponding to the outdoor information screen, respectively determine the sequence consistency mean of the guide information sequence corresponding to all vehicles passing through the outdoor information screen before and after the narrowing, and get the adjustment weight of the outdoor information screen; Set the adjustment threshold, compare with the adjustment weight, and judge whether to accept the adjustment hierarchical information; If yes, adjust the hierarchical information of the corresponding outdoor information screen, linkage control multiple outdoor information screens, guide the vehicle to enter the corresponding parking space.

8. An outdoor information screen linkage control system supporting intelligent parking guidance, characterized by, The system comprises a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other through the communication bus, and the processor calls the logic instructions in the memory to execute the outdoor information screen linkage control method supporting intelligent parking guidance according to any one of claims 1-7.

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