Public space barrier-free facility layout method based on multi-agent iterative deduction

Abstract

The application discloses a public space barrier-free facility layout method based on multi-agent iterative deduction, acquires barrier-free facility present situation data and carries out spatial superposition in a geographic information system, constructs a city public space barrier-free facility basic database; carries out design standard and demonstration case database construction and data integration; clearly defines city public space barrier-free facility types and evaluation requirements, determines design benchmark values, carries out present situation layout identification to clearly define whether to carry out planning scheme optimization iteration. Barrier-free facility and vulnerable group agent proxy models and crowd activity and barrier-free facility matching correlation models are established, layout scheme iteration optimization is carried out through model simulation and scheme deduction, and finally scheme interaction display and printing generation are carried out. The application realizes city public space identification and layout, and combines hardware equipment to carry out optimization and interaction display.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of urban planning, and particularly relates to a method for layout of barrier-free facilities in urban public space based on multi-agent iterative deduction. BACKGROUND

[0002] In the field of urban planning, the layout of barrier-free facilities in urban public space is crucial to achieving inclusivity and accessibility in cities. However, traditional methods for layout of barrier-free facilities in urban public space have the following limitations: first, traditional data collection methods are inefficient, require a large amount of manpower and time, and are difficult to ensure data accuracy and real-time performance. Second, traditional layout methods often overlook the specific needs of different user groups, resulting in mismatch between facility layout and actual needs. Third, traditional display methods lack interactivity, making it difficult for non-professionals to understand and utilize the layout results. Therefore, the present application proposes a method for layout of barrier-free facilities in urban public space based on multi-agent iterative deduction, with the aim of achieving more efficient, accurate, and interactive barrier-free facility layout. SUMMARY

[0003] The present application solves the current problems of data collection difficulty, real demand and space mismatch, and lack of real-time interaction in urban public space barrier-free facilities, and proposes a method for layout of barrier-free facilities in public space based on multi-agent iterative deduction, which responds to the human needs of urban planning and design in the context of people-oriented design, and uses diversified data collection equipment and multi-agent algorithms, agent models, and other methods to realize the identification and layout of urban public space, and optimizes and interacts with hardware devices for display.

[0004] The object of the present application can be achieved by the following technical solutions:

[0005] A method for layout of barrier-free facilities in public space based on multi-agent iterative deduction, which acquires barrier-free facility status data and performs spatial overlay in a geographic information system to construct a barrier-free facility database for urban public space; designs standard and demonstration case database construction and data integration; determines the type and evaluation requirements of barrier-free facilities in urban public space, determines the design benchmark value, and identifies the current layout on this basis to determine whether to optimize and iterate the planning scheme. Establishes an intelligent agent model of barrier-free facilities and vulnerable groups and a matching correlation model of human activity and barrier-free facilities, iteratively optimizes the layout scheme through model simulation and scheme deduction, and finally performs interactive display and printing generation of the scheme; specifically including the following steps:

[0006] Step S1: Acquire the barrier-free facility database for urban public space

[0007] Obtain the data of barrier-free facilities in urban public space. Obtain the data of barrier-free facilities in two categories of traffic roads and service facilities in the city through low-altitude barrier-free facility scanners; obtain the activity characteristic data of the elderly and children in urban public space through LBS data combined with GPS smart bracelets; obtain the activity characteristic data of the visually impaired and the physically disabled in urban public space through all-time infrared induction scanning equipment. Spatially superimpose the above three types of data in a geographic information system to build a barrier-free facility database for urban public space. Obtain the current relevant design standards and benchmark cases to build a current standard database and a demonstration case database. The current standard database is the basis for determining the status quo, and the demonstration case database is the main basis for generating the layout scheme. Integrate the basic database and the demonstration case data in a unified geographic information system through a DGX computer workstation to form a barrier-free facility database for urban public space.

[0008] Step S2: Build an evaluation system for barrier-free facilities in urban public space

[0009] Identify the types of barrier-free facilities in urban public space, combine the current standard database to determine the evaluation requirements of barrier-free facilities, and build a correlation model between facility types and evaluation requirements.

[0010] Step S3: Identify the current layout of barrier-free facilities in urban public space

[0011] Build a design index library for barrier-free facilities in urban public space by combining the planning indicators of each type of barrier-free facility in the current planning standards and demonstration cases. Based on the learning of the above index library, use the minimum standard method to select the specific threshold value of each index to further determine the design benchmark value of barrier-free facilities in urban public space. Call the barrier-free facility database for urban public space to determine the current status of barrier-free facilities in the target urban public space. If the facility type is incomplete or the judgment result does not meet the requirements, it means that the current status of barrier-free facilities in the case public space does not meet the evaluation standards, and step S4 is entered to generate an optimized layout scheme for barrier-free facilities in urban public space. If the judgment result meets the requirements, it can directly enter S5 to output the layout scheme.

[0012] Step S4: Generate a layout scheme for barrier-free facilities in urban public space

[0013] Based on the above conditions, an intelligent agent model for accessibility facilities and vulnerable groups is established. A matching and association model between crowd activities and accessibility facilities is constructed. The facility matching judgment criteria in S1 are invoked, and the number of iterations is set. The intelligent agent iteratively optimizes the accessibility facility layout scheme. The existing relevant design standards in the urban public space accessibility facility database from step S1 are called to judge the scheme. If it fails, the process returns to step S3; if it succeeds, the demonstration case database from step S1 is further invoked for judgment. If it succeeds, the process proceeds to step S5; if it fails, the process returns to step S4, until the conditions are met. Finally, an accessibility facility layout scheme is generated.

[0014] Step S5: Interactive demonstration of the layout plan for barrier-free facilities in urban public spaces

[0015] The city uses 3D digital holographic sand table equipment and virtual reality equipment to realize the 3D display and real-scene interaction of barrier-free facilities in urban public spaces, and uses 3D printing equipment to realize the printing of blueprints for the layout plan of barrier-free facilities in urban public spaces.

[0016] Furthermore, the specific process of step S1 is as follows:

[0017] Construction of a basic data acquisition and data integration platform for the layout of barrier-free facilities in urban public spaces in S11

[0018] Obtain the total resident population of the administrative district where the city's public spaces are located through government websites;

[0019] The OpenStreetMap platform acquires the required urban public space plan data, including four categories: entrances / exits, roads, squares, and facilities; it uses a low-altitude accessibility scanner to obtain current status data on accessibility facilities in urban public spaces, including the number, quality, current usage, and type of facilities; and it uses...

[0020] GPS smart bracelets, combined with LBS data, acquire activity characteristic data of the elderly and children in urban public spaces, including activity frequency, activity venues, and facilities used. Meanwhile, all-weather infrared sensing scanning devices acquire activity characteristic data of people with disabilities in urban public spaces, including activity frequency, activity venues, and facilities used. This data is then vectorized and feature indicators are extracted to construct an integrated data platform for accessibility facilities in urban public spaces.

[0021] S12 Constructing a Demonstration Case Library of Barrier-Free Facilities Layout in Urban Public Spaces

[0022] The cities selected in the list of national barrier-free environment cities, towns and villages announced by the Ministry of Housing and Urban-Rural Development are used as the benchmark cases for the development of the design standards for urban public space barrier-free facilities. The public spaces with the largest flow of people in the city are selected as the urban public spaces, and the barrier-free facility layout data in the public spaces is extracted based on step S11 as the reference cases for the design standards of barrier-free facilities, thereby constructing the urban public space barrier-free facility demonstration case library.

[0023] Further, the specific process of step S2 is:

[0024] S21 Urban public space barrier-free facility type

[0025] Based on the General Specification for Barrier-free Facilities in Architectural and Municipal Engineering (GB 55019-2021), the types of urban public space barrier-free facilities are determined as linear elements: blind path, barrier-free ramp; point elements: barrier-free entrance, barrier-free elevator and lifting platform, barrier-free information exchange facility, barrier-free urban furniture (seats, trash cans), barrier-free toilet, barrier-free parking space. A total of two categories and 8 items.

[0026] S22 Urban public space barrier-free facility evaluation

[0027] Combined with the relevant standards and case library constructed in S1, the evaluation indicators of urban public space barrier-free facilities are determined as the coverage rate, equality, accessibility and number of barrier-free facilities of urban public space barrier-free facilities.

[0028] S23 Association and matching of urban public space barrier-free facility type and planning target

[0029] Combined with the existing standards and case library described in S12 and S22, the association and matching degree of barrier-free facility type and related planning target are determined.

[0030] Referring to the inclusive city theory and life circle theory, the standard database constructed in S1, the planning standards of urban public space barrier-free facilities are determined, i.e. the coverage rate, equality, accessibility and number of barrier-free facilities of urban public space barrier-free facilities-Device-to-Population Ratio (DPR) can meet the barrier-free facility layout requirements required by the population activity demand, and barrier-free entrances, barrier-free elevators and lifting platforms need to be set in combination with the terrain elevation difference. Determine whether the above content meets the requirements of the existing standards. If it meets the requirements, go to S4. If it does not meet the requirements, go to the next step.

[0031] Further, the specific process of step S3 is:

[0032] S31 Determine the calculation method of urban public space barrier-free facility indicators

[0033] Based on the index calculation requirements, the urban public space is rasterized with 5m*5m grid units, and according to the planning indicators that the urban public space barrier-free facility planning target needs to meet, the corresponding calculation method is determined, including barrier-free facility coverage, barrier-free facility uniformity, barrier-free facility accessibility, barrier-free facility number and population ratio (DPR), and distance from terrain elevation point, and the specific calculation method is shown in the following table:

[0034] Combined with the urban public space barrier-free facility data integration platform described in S11 and the urban public space barrier-free facility layout demonstration case library described in S12, the barrier-free facility related planning data of the case library urban public space is obtained. Based on the S31 calculation method, the barrier-free facility coverage index set, the barrier-free facility uniformity index set, the barrier-free facility accessibility index set, and the barrier-free facility number and population ratio index set of all types of barrier-free facilities in the aforementioned demonstration case public space are calculated.

[0035] S32 Urban public space barrier-free facility design benchmark value

[0036] Combined with the current planning standards and the planning index set of each type of barrier-free facility of the demonstration case, the urban public space barrier-free facility design index library is constructed, and based on the learning of the above index library, the specific threshold value of each index is selected by using the minimum standard method, and the urban public space barrier-free facility design benchmark value is further determined. The specific calculation method of the benchmark value is as follows:

[0037]

[0038] S33 Identify target urban public space barrier-free facility layout status

[0039] Combined with the barrier-free facility data feature set of the urban public space described in S1 and the calculation method of the urban public space barrier-free facility planning index described in S31, the barrier-free facility status of the target urban public space is calculated, and the calculation result is compared with the urban public space barrier-free facility design benchmark value described in S32. The specific judgment standard is as follows:

[0040]

[0041]

[0042] According to the above judgment method, if the facility type is not complete or the judgment result does not meet the requirements, it means that the barrier-free facility status of the case public space does not meet the evaluation standard, and step S4 is entered to generate an urban public space barrier-free facility layout scheme optimization; if the judgment result meets the requirements, it can directly enter S5 to output the layout scheme.

[0043] Further, the specific process of step S4 is:

[0044] S41 Barrier-free facilities and vulnerable groups agent model

[0045] In combination with the calculation method of the urban public space barrier-free facility planning index described in S31 and the urban public space barrier-free facility design benchmark value described in S32, the above-mentioned standard is taken as a characteristic constraint condition to construct an agent model of all types of barrier-free facilities in urban public space; define the disabled, the elderly and children as vulnerable groups, and clearly define the target demand of vulnerable groups in urban public space as having to use along the path

[0046] S21 described all types of barrier-free facilities, thereby constructing a vulnerable group agent model as a constraint condition.

[0047] S42 Demand-space matching multi-agent system model construction

[0048] The target urban public space area is rasterized with a 5m*5m grid unit and the grid units completely located in the non-range are removed. In combination with the barrier-free facility data feature set described in S11, the physical environment data set is established by using the plot data of the target urban public space and the corresponding crowd activity data. In combination with the agent model of the barrier-free facility agent and the vulnerable group agent described in S41, a multi-agent system model is established, and the system simulation and running simulation are performed by using the Simulink tool. The above-mentioned data is uniformly placed in the S1 data integration platform.

[0049] S43 Iterative optimization of urban public space barrier-free facilities based on multi-agent model

[0050] In the foregoing data set platform, the matching and correlation analysis of vulnerable groups and barrier-free facilities is performed on the multi-agent system model. Further, the condition for outputting the facility layout scheme is that the barrier-free facility agent satisfies the characteristic constraint condition, i.e., the urban public space barrier-free facility design benchmark value described in S23; and the matching and correlation of the vulnerable group agent and the barrier-free facility satisfy the condition, i.e., the vulnerable group can reach all barrier-free facilities in the scheme. The iteration number parameter is set, and the specific parameter setting is as follows:

[0051] Parameter Value Number of initial iterations 100 Convergence threshold 1％ Maximum number of iterations 500 Intermediate evaluation frequency Every 50 iterations

[0052] After the above-mentioned conditions are met, the layout scheme can be output. If not, return to the previous step and continue iteration until the conditions are met.

[0053] Further, the detailed process of the step S5 is as follows:

[0054] The three-dimensional display and real scene interaction of the barrier-free facilities in the urban public space are realized through the urban three-dimensional digital holographic sand table device and the virtual reality device, wherein, the panorama virtual glasses with the binocular resolution reaching 3664x1920 pixels and the 98° field of view angle sensor and display are used for the interaction of the healthy people, and the intelligent navigation system with the 3664x1920 pixel camera, the text recognition to voice, the accurate voice recognition higher than 90%, the second-level face recognition technology, the meter-level positioning accuracy and the high-fidelity voice output device are used for the image, text to voice real scene interaction of the disabled people. Then, the drawing printing of the barrier-free facility layout scheme of the urban public space is realized through the 3D printing device.

[0055] Beneficial effects:

[0056] 1. The barrier-free facility data of the urban public space is integrated and unified on the geographic information platform, the barrier-free facility data related to human-land is innovatively combined, the data of the old people and children based on the LBS data and the activity characteristic data of the disabled people obtained based on the all-time infrared induction scanning device are mainly considered, and the present layout data of the barrier-free facility is coupled, so that the limitation that the traditional data acquisition technology is difficult to directly obtain the activity data of the disabled people is broken through.

[0057] 2. The importance of the evaluation standard for the intelligent generation of the barrier-free facility layout planning scheme is mainly considered, the design index library of the barrier-free facility of the urban public space is constructed by combining the planning index set of each type of barrier-free facility of the existing planning standard and the barrier-free demonstration city case, and the specific threshold value of each index is selected by using the minimum standard method, so that the design benchmark value of the barrier-free facility of the urban public space is determined. The setting of the barrier-free facility layout planning index benchmark value realizes the applicability of the evaluation index applied to the intelligent generation of the barrier-free facility layout planning scheme, and is helpful to the comparison and determination of the subsequent layout scheme.

[0058] 3. The intelligent agent model of the barrier-free facility and the vulnerable group is innovatively established to simulate the combination relationship between the barrier-free facility and the vulnerable group under different layout schemes and compare and determine with the design benchmark value, and the reasonable layout scheme is finally generated through iteration optimization. The simulation of the barrier-free facility intelligent agent and the vulnerable group intelligent agent can effectively improve the design accuracy, the data-driven optimization method can significantly improve the scientificity and accuracy of the design scheme, and the iteration of different schemes in the virtual environment can reduce the trial and error cost. Through data simulation and optimization, potential problems can be solved in the design stage, so that the cost of later modification and maintenance is reduced.

[0059] 4. The public space barrier-free facility layout scheme interactive display module of the present application can realize three-dimensional display and real scene interaction of the barrier-free facilities of the city public space through the city three-dimensional digital holographic sand table device and the virtual reality device, so that managers, decision makers and users can intuitively feel the barrier-free facility layout scheme and perform human-computer interactive optimization and adjustment, and provide three-dimensional display and real scene interaction experience of the barrier-free facilities of the city public space to staff and the public, especially the vulnerable groups. BRIEF DESCRIPTION OF DRAWINGS

[0060] Figure 1 The method flowchart of the present application. DETAILED DESCRIPTION

[0061] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application.

[0062] A public space barrier-free facility layout method based on multi-agent iterative deduction, as shown in Figure 1 The method comprises the following steps:

[0063] Step S1: Obtain city public space barrier-free facility data. Obtain the current data of two types of barrier-free facilities, i.e. traffic roads and service facilities, in the city through a low-altitude barrier-free facility scanner; obtain the activity characteristic data of the elderly and children in the city public space through LBS data combined with a GPS smart bracelet; obtain the activity characteristic data of two types of disabled persons, i.e. visually impaired and physically impaired, in the city public space through a full-time infrared sensing scanning device; spatially superimpose the above three types of data in a geographic information system to construct a city public space barrier-free facility basic database. Obtain the current relevant design standards and benchmark cases to construct a current standard database and a demonstration case database, wherein the current standard database is the basis for determining the current situation, and the demonstration case database is the main basis for generating the layout scheme. Integrate the basic database and the demonstration case data in a unified geographic information system through a DGX computer workstation to form a city public space barrier-free facility database.

[0064] The detailed process of step S1 is as follows:

[0065] Step 1.1: Obtain city public space barrier-free facility layout basic data and construct a data integration platform. Obtain the total number of permanent residents in the administrative district where the city public space is located through a government website; obtain the total number of the elderly and children in the city public space through a government website; obtain the required city public space plan data through an OpenStreetMap platform, including four types of entrances, roads, squares and facilities; obtain the current data of barrier-free facilities in the city public space through a low-altitude barrier-free facility scanner, including the number of facilities, the quality of facilities, the current use of facilities and the types of facilities; obtain the activity characteristic data of the elderly and children in the city public space through LBS data combined with a GPS smart bracelet; obtain the activity characteristic data of two types of disabled persons, i.e. visually impaired and physically impaired, in the city public space through a full-time infrared sensing scanning device.

[0066] Step 1.2: Construct a city public space barrier-free facility basic database. Spatially superimpose the above three types of data in a geographic information system to construct a city public space barrier-free facility basic database.

[0067] The GPS smart bracelet combines LBS data to obtain activity characteristic data of the elderly and children in urban public spaces, including activity frequency, activity site, and activity use facilities. The activity characteristic data of the disabled in urban public spaces is obtained through full-time infrared induction scanning equipment, including activity frequency, activity site, and activity use facilities. The above data is vectorized and processed to extract feature indicators to build an integrated platform for barrier-free facilities in urban public spaces. The data types and acquisition methods of the urban public space are as follows:

[0068]

[0069]

[0070] Step 1.2, Building a demonstration case library of urban public space barrier-free facility layout. Select the cities selected in the list of national barrier-free environment cities, counties, and towns announced by the Ministry of Housing and Urban-Rural Development as the benchmark cases for developing urban public space barrier-free facility design standards. Select the public space with the largest flow of people in the city as the urban public space, and extract the barrier-free facility layout basic data in the public space based on step S11 as the reference case for barrier-free facility design standards, thereby building a demonstration case library of urban public space barrier-free facilities.

[0071] Step S2: Building an evaluation system for urban public space barrier-free facilities. Clearly define the types of urban public space barrier-free facilities, and combine the existing standard database to define the barrier-free facility evaluation requirements and build a correlation model between facility types and evaluation requirements.

[0072] The detailed process of step S2 is as follows:

[0073] Step 2.1, Determine the type of urban public space barrier-free facilities. Based on the "General Specification for Barrier-free Buildings and Municipal Engineering" (GB 55019-2021), the types of urban public space barrier-free facilities are linear elements: blind path, barrier-free ramp; point elements: barrier-free entrance, barrier-free elevator and lifting platform, barrier-free information exchange facilities, barrier-free urban furniture (seats, trash cans), barrier-free toilets, and barrier-free parking spaces. There are two categories and 8 items.

[0074] Step 2.2, Evaluation of urban public space barrier-free facilities. Based on the relevant standards and case library built in S1, the evaluation indicators of urban public space barrier-free facilities are the coverage rate, equality, accessibility, and number of barrier-free facilities in urban public spaces.

[0075] Step 2.3, Association and matching of urban public space barrier-free facility types and planning targets. Based on the barrier-free facility types and planning targets, the barrier-free facility types are matched with the planning targets to build a barrier-free facility planning target matching model.

[0076] S12, S22, the current standard and case library, the association matching degree of barrier-free facility type and related planning target is clear, and the specific planning target is shown in the following table:

[0077]

[0078] Referring to the inclusive city theory and life circle theory, S1 constructs a standard database to clearly define the planning standards of urban public space barrier-free facilities, that is, the coverage, equality, accessibility and number of barrier-free facilities of urban public space barrier-free facilities can meet the demand of population activity, and the barrier-free entrance, barrier-free elevator and lifting platform need to be set in combination with the terrain elevation. Determine whether the above content meets the current standard requirements. If it meets, go to S4, if it does not meet, go to the next step.

[0079] Step S3: Identify the current layout of urban public space barrier-free facilities. Combine the planning indicators of each type of barrier-free facility in the current planning standard and demonstration case to construct a design indicator library of urban public space barrier-free facilities, and based on the learning of the above indicator library, use the minimum standard method to select the specific threshold of each indicator to further determine the design benchmark value of urban public space barrier-free facilities. Call the urban public space barrier-free facility database to determine the current status of barrier-free facilities in the target urban public space. If the facility type is not complete or the judgment result does not meet the requirements, it means that the current status of barrier-free facilities in the case public space does not meet the evaluation standard, and step S4 is entered to generate an urban public space barrier-free facility layout optimization scheme; if the judgment result meets the requirements, it can directly enter S5 to output the layout scheme.

[0080] The detailed process of step S3 is as follows:

[0081] Step 3.1, identify the current layout of urban public space barrier-free facilities. It includes urban public space barrier-free facility calculation method, urban public space barrier-free facility benchmark value, and urban public space barrier-free facility status identification.

[0082] Step 3.2, determine the calculation method of urban public space barrier-free facility indicators. Based on the requirement of indicator calculation, the urban public space is rasterized with 5m*5m grid unit, and according to the planning indicators that need to be met by the planning target of urban public space barrier-free facilities as described in S24, the corresponding calculation method is determined, including barrier-free facility coverage, barrier-free facility equality, barrier-free facility accessibility, barrier-free facility number and population ratio (DPR) and distance from terrain elevation point, the specific calculation method is shown in the following table:

[0083] The planning data of the barrier-free facilities of the case library of the urban public space are obtained in combination with the barrier-free facility data integration platform of the urban public space described in S11 and the layout demonstration case library of the barrier-free facilities of the urban public space described in S12. Based on the calculation method in S31, the coverage rate index set of all types of barrier-free facilities, the uniformity index set of barrier-free facilities, the accessibility index set of barrier-free facilities, and the index set of the number of barrier-free facilities to population of the aforementioned demonstration case public space are calculated respectively.

[0084] Step 3.3, identifying the barrier-free facility layout status of the target urban public space. In combination with the data feature set of the barrier-free facilities of the urban public space described in S1 and the calculation method of the planning index of the barrier-free facilities of the urban public space described in S31, the barrier-free facility status of the target urban public space is calculated, and the calculation result is compared with the design benchmark value of the barrier-free facilities of the urban public space described in S32. The specific judgment criteria are as follows:

[0085]

[0086] According to the above judgment method, if the facility type is not complete or the judgment result does not meet the requirements, it means that the barrier-free facility status of the case public space does not meet the evaluation standard, and step S4 of generating the barrier-free facility layout scheme of the urban public space is entered; if the judgment result meets the requirements, it can directly enter S5 to output the layout scheme.

[0087] Step S4: generating the barrier-free facility layout scheme of the urban public space. Based on the above conditions, the barrier-free facility and vulnerable group intelligent agent model is established. The matching correlation model of crowd activities and barrier-free facilities is constructed, the facility matching judgment criteria in S1 are called, the iteration number is set, the intelligent agent is iteratively optimized for the barrier-free facility layout scheme, the current relevant design standards in the barrier-free facility database of the urban public space in S1 are called to judge the scheme, if it does not pass, it returns to step S3; if it passes, it further calls the demonstration case database in S1 for judgment, if it passes, it enters step S5, if it does not pass, it returns to step S4, until the conditions are met. Finally, the barrier-free facility layout scheme is generated.

[0088] The detailed process of step S4 is as follows:

[0089] Step 4.1, set the barrier-free facilities and vulnerable groups agent model. Combine the calculation method of the urban public space barrier-free facility planning index described in S31 and the urban public space barrier-free facility design benchmark value described in S32, the above standard is used as the characteristic constraint condition to build the agent model of all types of barrier-free facilities in urban public space; define the disabled, the elderly and children as vulnerable groups, and clearly define the target demand of vulnerable groups in urban public space as must use all barrier-free facilities along the path described in S21, thereby building a vulnerable group agent model as a constraint condition.

[0090] Step 4.2, demand-space matching multi-agent system model construction. The target urban public space area is rasterized with 5m*5m grid units and the grid units completely located in the non-range are removed, combined with the barrier-free facility data feature set described in S11, the physical environment data set is established using the plot data of the target urban public space and the corresponding crowd activity data, combined with the agent model of the barrier-free facility agent and the vulnerable group agent described in S41, the multi-agent system model is established, and the

[0091] Simulink tool is used for system simulation and running simulation. The above data is integrated into the S1 data integration platform.

[0092] Step 4.3, iterative optimization of urban public space barrier-free facilities based on multi-agent model. In the foregoing data set platform, the matching correlation analysis of vulnerable groups and barrier-free facilities is carried out on the multi-agent system model, further, the condition for outputting the facility layout scheme is that the barrier-free facility agent satisfies the characteristic constraint condition, i.e. the urban public space barrier-free facility design benchmark value described in S23; and the matching correlation of the vulnerable group agent and the barrier-free facility satisfies the condition, i.e. the vulnerable group can reach all barrier-free facilities in the scheme. Set the iteration number parameter, the specific parameter setting is as follows:

[0093]

[0094]

[0095] The layout scheme can be output after meeting the above conditions. If not, return to the previous step and continue iteration until it is satisfied.

[0096] Step S5: realize three-dimensional display and real scene interaction of urban public space barrier-free facilities through city three-dimensional digital holographic sand table equipment and virtual reality equipment, and realize paper printing of urban public space barrier-free facility layout scheme through 3D printing equipment.

[0097] The detailed process of step S5 is as follows:

[0098] The three-dimensional display and real scene interaction of the barrier-free facilities in the urban public space are realized through the urban three-dimensional digital holographic sand table device and the virtual reality device, wherein, the panorama virtual glasses with the binocular resolution reaching 3664x1920 pixels and 98° field of view angle sensor and display are used for the interaction of the healthy people, the intelligent navigation system with 3664x1920 pixels camera, text recognition to voice, higher than 90% accurate voice recognition, second-level face recognition technology, meter-level positioning accuracy and high-fidelity voice output device are used for the image, text to voice real scene interaction of the intelligent guide robot of the disabled people. Then, the layout scheme of the barrier-free facilities in the urban public space is printed through the 3D printing device.

[0099] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principle of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A public space barrier-free facility layout method based on multi-agent iterative deduction, characterized in that, Comprise the following steps: Step S1: Obtain the database of barrier-free facilities in urban public space Obtain the barrier-free facility data in urban public space; obtain the current data of two types of barrier-free facilities in urban traffic roads and service facilities through low-altitude barrier-free facility scanners; obtain the activity characteristic data of the elderly and children in urban public space through LBS data combined with GPS smart bracelets; obtain the activity characteristic data of the visually impaired and the physically disabled in urban public space through full-time infrared induction scanning equipment, and spatially superimpose the above three types of data in a geographic information system to build a barrier-free facility database in urban public space; obtain the current relevant design standards and benchmark cases to build a current standard database and a demonstration case database, wherein the current standard database is the basis for determining the status quo, and the demonstration case database is the basis for generating the layout scheme; integrate the basic database and the demonstration case data in a unified geographic information system through a DGX computer workstation to form a barrier-free facility database in urban public space; Step S2: Build an evaluation system for barrier-free facilities in urban public space Identify the types of barrier-free facilities in urban public space, combine the current standard database to identify barrier-free facility evaluation requirements, and build a correlation model between facility types and evaluation requirements; Step S3: Identify the barrier-free facility layout status in urban public space Combine the planning indicators of each type of barrier-free facility in the current planning standards and demonstration cases to build a design indicator library for barrier-free facilities in urban public space, and based on the learning of the above indicator library, use the minimum standard method to select the specific threshold of each indicator to further determine the design benchmark value of barrier-free facilities in urban public space; call the barrier-free facility database in urban public space to determine the current status of barrier-free facilities in the target urban public space; if the facility type is incomplete or the judgment result does not meet the requirements, it means that the current status of barrier-free facilities in the case public space does not meet the evaluation standards, and step S4 is entered to generate an optimized barrier-free facility layout scheme for urban public space; if the judgment result meets the requirements, directly enter S5 to output the layout scheme; Step S4: Generate a barrier-free facility layout scheme for urban public space Based on the above conditions, build an intelligent agent model for barrier-free facilities and vulnerable groups; build a matching correlation model between human activity and barrier-free facilities, call the facility matching judgment standard in S1, set the number of iterations, and through iterative optimization of the intelligent agent on the barrier-free facility layout scheme, call the current relevant design standards in the barrier-free facility database in urban public space in step S1 to determine the scheme, if it does not pass, return to step S3; if it passes, further call the demonstration case database in step S1 to determine, if it passes, enter step S5, if it does not pass, return to step S4, until the conditions are met; finally generate a barrier-free facility layout scheme; Step S5: Interactive display of barrier-free facility layout scheme for urban public space Realize three-dimensional display and real scene interaction of barrier-free facilities in urban public space through urban three-dimensional digital holographic sand table equipment and virtual reality equipment, and realize paper printing of barrier-free facility layout scheme in urban public space through 3D printing equipment.

2. The multi-agent based iterative deduction based public space barrier-free facility layout method according to claim 1, characterized in that, The step S1 is specifically as follows: S11: Construction of the basic data acquisition and data integration platform of the barrier-free facility layout of the urban public space The total number of permanent residents in the administrative district where the urban public space is located is acquired through the government website; the required urban public space plane data, including four categories of entrances, roads, squares and facilities, are acquired through the OpenStreetMap platform; the current data of the barrier-free facilities in the urban public space, including the number of facilities, the quality of facilities, the current use of facilities and the types of facilities, are acquired through the low-altitude barrier-free facility scanner; the activity characteristic data of the elderly and children in the urban public space, including the activity frequency, the activity site and the activity using facilities, are acquired through the GPS smart bracelet combined with the LBS data; the activity characteristic data of the disabled in the urban public space, including the activity frequency, the activity site and the activity using facilities, are acquired through the all-time infrared induction scanning device; the above data are vectorized and processed and the characteristic indexes are extracted to construct the barrier-free facility data integration platform of the urban public space; S12: Construction of the demonstration case library of the barrier-free facility layout of the urban public space The cities selected in the list of cities, counties and towns with barrier-free environment published by the Ministry of Housing and Urban-Rural Development are taken as the benchmark cases for formulating the design standards of the barrier-free facilities of the urban public space, the public spaces with the largest flow of people in the city are selected as the urban public spaces, and the basic data of the barrier-free facility layout in the public spaces are extracted based on step S11 to serve as the reference cases for the design standards of the barrier-free facilities, thereby constructing the demonstration case library of the barrier-free facilities of the urban public space.

3. The multi-agent based iterative deduction based public space barrier-free facility layout method according to claim 2, characterized in that, The step S2 is specifically as follows: S21: Type of the barrier-free facilities of the urban public space Based on the General Code for Barrier-free Design of Buildings and Municipal Engineering, the types of the barrier-free facilities of the urban public space are determined as two categories of eight items, i.e. line elements: blind path, barrier-free ramp; point elements: barrier-free entrance, barrier-free elevator and lifting platform, barrier-free information exchange facility, barrier-free urban furniture, barrier-free toilet, barrier-free parking space; S22: Evaluation of the barrier-free facilities of the urban public space In combination with the related standards and case library constructed in S1, the evaluation indexes of the barrier-free facilities of the urban public space are determined as the coverage rate, the equality, the accessibility and the number of the barrier-free facilities of the urban public space; S23: Correlation matching of the type of the barrier-free facilities of the urban public space and the planning target In combination with the current standards and case library described in S12 and S22, the correlation matching degree of the type of the barrier-free facilities and the related planning target is determined; In reference to the inclusive city theory and the life circle theory, the standard database constructed in S1, the planning standards of the barrier-free facilities of the urban public space are determined, i.e. the coverage rate, the equality, the accessibility and the number of the barrier-free facilities of the urban public space-the population of the case city can meet the barrier-free facility layout requirements of the activity demand of the population, and the barrier-free entrance and the barrier-free elevator and lifting platform need to be set in combination with the terrain elevation difference; it is judged whether the above contents meet the requirements of the current standards, if yes, to S4, if not, to the next step.

4. The multi-agent based iterative deduction based public space barrier-free facility layout method according to claim 3, characterized in that, The step S3 is specifically as follows: S31: Determination of the calculation method of the indexes of the barrier-free facilities of the urban public space Based on the index calculation requirements, the urban public space is rasterized with 5m*5m grid units, and according to the planning indicators that the urban public space barrier-free facility planning target needs to meet, the corresponding calculation method is determined, including barrier-free facility coverage, barrier-free facility uniformity, barrier-free facility accessibility, barrier-free facility number and population ratio, and distance from terrain elevation point, the specific calculation method is shown in the following table: Combined with the urban public space barrier-free facility data integration platform described in S11 and the urban public space barrier-free facility layout demonstration case library described in S12, the barrier-free facility related planning data of the case library urban public space is obtained; based on the calculation method S31, the barrier-free facility coverage index set, the barrier-free facility uniformity index set, the barrier-free facility accessibility index set, and the barrier-free facility number and population ratio index set of all types of barrier-free facilities in the aforementioned demonstration case public space are calculated respectively; S32 Urban public space barrier-free facility design benchmark value Combined with the current planning standards and the planning index set of each type of barrier-free facility of the demonstration case, the urban public space barrier-free facility design index library is constructed, and based on the learning of the above index library, the specific threshold value of each index is selected by using the minimum standard method, and the urban public space barrier-free facility design benchmark value is further determined; the specific calculation method of the benchmark value is as follows: S33 Identify target urban public space barrier-free facility layout status Combined with the barrier-free facility data feature set of the urban public space described in S1 and the calculation method of the urban public space barrier-free facility planning index described in S31, the barrier-free facility status of the target urban public space is calculated, and the calculation result is compared with the urban public space barrier-free facility design benchmark value described in S32, and the specific judgment standard is as follows: According to the above judgment method, if the facility type is not complete or the judgment result does not meet the requirements, it means that the barrier-free facility status of the case public space does not meet the evaluation standard, and step S4 is entered to generate the urban public space barrier-free facility layout scheme optimization; if the judgment result meets the requirements, directly enter S5 to output the layout scheme.

5. The multi-agent based iterative deduction based public space barrier-free facility layout method according to claim 4, characterized in that, The specific process of step S4 is as follows: S41 Barrier-free facility and vulnerable group agent model Combined with the calculation method of the urban public space barrier-free facility planning index described in S31 and the urban public space barrier-free facility design benchmark value described in S32, the above standard is used as a characteristic constraint condition to construct an intelligent agent model of all types of barrier-free facilities in urban public space; define the disabled, the elderly and children as vulnerable groups, and clearly define the target demand of vulnerable groups in urban public space as must use all barrier-free facility types along the path described in S21, thereby constructing a vulnerable group intelligent agent model as a constraint condition; S42 Demand-space matching multi-agent system model construction The target city public space area is rasterized in 5m*5m grid units and the grid units completely located in the non-range are removed, the physical environment data set is established by combining the city public space barrier-free facility data feature set described in S11 and the plot data and corresponding population activity data of the target city public space, the multi-agent system model is established by combining the agent model of the barrier-free facility agent and the vulnerable group agent described in S41, and the system simulation and operation simulation are performed by using the Simulink tool; the above data is uniformly placed in the S1 data integration platform; S43 iteration optimization of city public space barrier-free facilities based on multi-agent model The matching and correlation analysis of the vulnerable group and the barrier-free facility of the multi-agent system model is performed in the foregoing data set platform, the condition for outputting the facility layout scheme is that the barrier-free facility agent satisfies the characteristic constraint condition, i.e., the city public space barrier-free facility design reference value described in S23, and the matching and correlation of the vulnerable group agent and the barrier-free facility satisfy the condition, i.e., the vulnerable group can reach all the barrier-free facilities in the scheme; the iteration number parameter is set, and the specific parameter setting is as follows: After the above conditions are met, the layout scheme is output; if not, return to the previous step and continue iteration until the conditions are met.

6. The multi-agent based iterative deduction public space barrier-free facility layout method according to claim 5, wherein, The specific process of the step S5 is as follows: The three-dimensional display and real scene interaction of the city public space barrier-free facility are realized by the city three-dimensional digital holographic sand table equipment and the virtual reality equipment, wherein the panoramic virtual glasses equipped with a sensor and a display with a binocular resolution of 3664x1920 pixels and a 98° field of view angle are used for interaction for healthy people, and the intelligent guide robot with a camera of 3664x1920 pixels, a text recognition to voice, a voice recognition accuracy higher than 90%, a second-level face recognition technology, a meter-level positioning accuracy and a high-fidelity voice output equipment is used for image, text to voice and real scene interaction for the disabled; then, the 3D printing equipment is used to realize the drawing printing of the city public space barrier-free facility layout scheme.

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