System and method for analyzing passenger flow rate of transfer station based on BIM (Building Information Modeling) technology

Abstract

The invention relates to the technical field of urban rail transit digital evaluation, and discloses a system and a method for analyzing the passenger flow of a transfer station based on a BIM (Building Information Modeling) technology. The system comprises a sensor end, a central processing end and a display end, and the sensor end comprises a gravity sensing module and an infrared imaging module; gravity sensing information of an entrance and an exit of a transfer station and infrared imaging information in a transfer station room are collected respectively; the information processing module is used for displaying the information acquired by the gravity sensing module and the infrared imaging module at a sensor position corresponding to the BIM model in real time; and selecting a reasonable vehicle scheduling scheme or establishing a new vehicle scheduling scheme according to the passenger flow information at the entrance and the exit of the transfer station and the passenger flow information in the transfer station. Based on the system, the pedestrian flow in the station can be effectively and automatically monitored, and the vehicle scheduling scheme is adjusted according to the pedestrian flow change.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of urban rail transit digital evaluation technology, and in particular to a system and method for analyzing passenger flow at a transfer station based on BIM technology. BACKGROUND

[0002] With the rapid development of China's economy, the urbanization process is further improved, a large number of people migrate to large cities, and the size of the city also expands rapidly. People take rail transit to go out more frequently and for a longer time than before, and the phenomenon of people gathering in rail transit building space in a short time is more serious.

[0003] However, there are a large number of people in the rail transit transfer station, and congestion often occurs, which can easily cause conflicts between passengers and even safety accidents, and there is a great safety hazard. It is particularly necessary to effectively and automatically monitor the passenger flow in the station and adjust the vehicle scheduling scheme according to the change in passenger flow. SUMMARY

[0004] To solve the above technical problems, the present application provides a system for analyzing passenger flow at a transfer station based on BIM technology, comprising: a sensor end, a central processing end and a display end; The sensor end comprises a gravity sensing module and an infrared imaging module. The gravity sensing module comprises a plurality of gravity sensors for collecting gravity sensing information at the entrance and exit of the transfer station and transmitting the gravity sensing information to the central processing end. The infrared imaging module comprises a plurality of infrared imaging sensors for collecting infrared imaging information in the indoor of the transfer station and transmitting the infrared imaging information to the central processing end. The central processing end comprises an information receiving module, an information processing module, a control module and a database module. The information receiving module is used to receive information from the gravity sensing module and the infrared imaging module and send it to the information processing module and store it in the database module. The information processing module is used to process information from the information receiving module and display information collected by the gravity sensing module and the infrared imaging module in real time at the corresponding sensor position of the BIM model. For the gravity sensing information collected at the entrance and exit of the transfer station, the information processing module estimates the number of people at the entrance and exit of the transfer station to obtain the passenger flow information at the entrance and exit of the transfer station and stores the passenger flow information at the entrance and exit of the transfer station in the database module. The information processing module estimates the number of people in the transfer station according to the infrared imaging information collected in the transfer station, obtains the indoor passenger flow information of the transfer station, and stores the indoor passenger flow information of the transfer station into the database module. The information processing module selects a reasonable vehicle scheduling scheme or establishes a new vehicle scheduling scheme according to the entrance and exit passenger flow information of the transfer station and the indoor passenger flow information of the transfer station. The control module is configured to transmit the vehicle scheduling scheme selected or established by the information processing module to a vehicle scheduling control system, and the vehicle scheduling control system controls the vehicle scheduling of the current transfer station and adjacent transfer stations and stores the adjusted vehicle scheduling scheme into the database module. The database module includes a vehicle scheduling scheme database, a real-time information database, and a BIM model storage database. The vehicle scheduling scheme database stores the vehicle scheduling scheme newly established by the information processing module. The real-time information database is configured to store the information from the information receiving module, the entrance and exit passenger flow information and the indoor passenger flow information of the transfer station obtained by the information processing module, and the adjusted vehicle scheduling scheme of the control module, for subsequent adjustment and optimization of the vehicle scheduling scheme by the information processing module. The BIM model storage database is configured to store the three-dimensional model of the transfer station containing the sensor end information. The display end is configured to display the number and distribution of real-time passenger flow of the transfer station, the arrival time of the vehicle and the departure time of the vehicle in combination with the real-time information and the BIM model. Further, the vehicle scheduling scheme database further includes correlation data between passenger flow and vehicle scheduling simulated and calculated by related software according to existing data and related materials, which is stored in the form of function mapping to form a plurality of vehicle scheduling schemes. Further, the information processing module selects a reasonable vehicle scheduling scheme or establishes a new vehicle scheduling scheme according to the entrance and exit passenger flow information of the transfer station and the indoor passenger flow information of the transfer station, including: According to the entrance and exit passenger flow information of the transfer station and the indoor passenger flow information of the transfer station, the changes in the entrance and exit passenger flow of the transfer station and the changes in the indoor passenger flow of the transfer station are obtained. The vehicle scheduling needs to be adjusted according to the changes in the entrance and exit passenger flow of the transfer station and the changes in the indoor passenger flow of the transfer station. The proportional-integral-derivative control (PID control) is adopted to combine the proportional, integral and differential deviations by linear combination to form a control quantity. The control system can be adjusted according to the deviation between the actual vehicle scheduling and the planned vehicle scheduling, the rationality of the vehicle scheduling can be improved by adding the differential action on the basis of the proportional action, and the integral action can be added to eliminate the residual error, so that the vehicle scheduling reaches the optimization. Further, the information processing module calculates the entrance and exit passenger flow information of the transfer station and the indoor passenger flow information of the transfer station every T minutes, and stores the data in the database and displays the data in real time on the display terminal. Further, the information processing module estimates the number of people at the entrance and exit of the transfer station according to the gravity sensing information collected at the entrance and exit of the transfer station to obtain the entrance and exit passenger flow information of the transfer station, which includes: Under the action of gravity, the gravity is transmitted to the gravity sensor through the carrier, the elastic body of the gravity sensor is deformed, the strain gauge bridge attached to the elastic body loses balance, and an electric signal proportional to the gravity value is output, the signal is amplified through a linear amplifier, and then converted into a digital signal, and the gravity data is directly displayed after the digital signal is processed by the microprocessor (CPU) with an instrument; The information processing module continuously records the readings of the gravity sensor and draws a real-time gravity curve; When multiple people pass through the gravity sensor at the same time, the passenger flow cannot be simply obtained by the change curve of the sensor reading, and the sensor reading is a simple superposition of the curve of multiple people passing through the sensor, at this time, the function needs to be separated: The gravity change function of each person passing through the gravity sensor is: Fn=fθn(x), 1<=n<=3, and is an integer In the formula, θn is a matrix of undetermined parameters in the function; Fn is the sensor reading change curve of each person passing through the sensor; f is a function of θ; The undetermined parameters can be obtained by using the unsupervised learning algorithm in machine learning, and the gravity change function of each person is extracted, and a cost function is used to feedback the accuracy of the extraction result; If the undetermined parameter θn of a function is less than 0.05, the influence of the function is ignored, and the number of people is reduced by 1; The information processing module continuously calculates the number of effective functions in the interval, that is, the cumulative passenger flow at the entrance and exit of the transfer station, the cumulative passenger flow at the entrance and exit of the transfer station passing through in T time, and transmits the data to the central processor for adjusting the vehicle scheduling scheme. The application also provides a method for analyzing the passenger flow of a transfer station based on BIM technology, which is based on the system for analyzing the passenger flow of a transfer station based on BIM technology.

[0005] The application also provides an electronic device, comprising a processor and a memory; the processor is used for executing the steps of the method for analyzing the passenger flow of a transfer station based on BIM technology by calling programs or instructions stored in the memory.

[0006] The application also provides a computer readable storage medium storing programs or instructions, which make a computer execute the steps of the method for analyzing the passenger flow of a transfer station based on BIM technology.

[0007] The embodiments of the application have the following technical effects: The application discloses a system for analyzing the passenger flow of a transfer station based on BIM technology, comprising a sensor end, a central processing end and a display end, wherein the sensor end comprises a gravity sensing module and an infrared imaging module; the gravity sensing information of the entrance and exit of the transfer station and the infrared imaging information of the indoor transfer station are collected respectively; an information processing module displays the information collected by the gravity sensing module and the infrared imaging module in real time at the corresponding sensor position of the BIM model; and a reasonable vehicle scheduling scheme is selected or a new vehicle scheduling scheme is established according to the passenger flow information of the entrance and exit of the transfer station and the indoor passenger flow information of the transfer station. Based on the system, the indoor passenger flow of the station can be effectively monitored automatically, and the vehicle scheduling scheme can be adjusted according to the passenger flow change. BRIEF DESCRIPTION OF DRAWINGS

[0008] In order to more clearly illustrate the specific embodiments of the application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0009] Figure 1 It is a framework schematic diagram of the system for analyzing the passenger flow of a transfer station based on BIM technology provided by the embodiments of the application. DETAILED DESCRIPTION

[0010] In order to make the objects, technical solutions and advantages of the application clearer, the technical solutions of the application will be described clearly and completely below. Obviously, the described embodiments are only some of the embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the application.

[0011] In order to solve the above technical problems, the application provides a system for analyzing the passenger flow of a transfer station based on BIM technology.

[0012] Figure 1 is a framework schematic diagram of a system for analyzing passenger flow at a transfer station based on BIM technology provided by an embodiment of the present application, referring to Figure 1 The system comprises a sensor end, a central processing end and a display end. The sensor end comprises a gravity sensing module and an infrared imaging module. The gravity sensing module comprises a plurality of gravity sensors for collecting gravity sensing information at the entrances and exits of the transfer station and transmitting the gravity sensing information to the central processing end. The infrared imaging module comprises a plurality of infrared imaging sensors for collecting infrared imaging information in the indoor of the transfer station and transmitting the infrared imaging information to the central processing end. The central processing end comprises an information receiving module, an information processing module, a control module and a database module. The information receiving module is configured to receive information from the gravity sensing module and the infrared imaging module and send the information to the information processing module and store the information to the database module. The information processing module is configured to process information from the information receiving module and display information collected by the gravity sensing module and the infrared imaging module in real time at the sensor positions corresponding to the BIM model. Further, the information processing module calculates and generates an entrance and exit passenger flow information of the transfer station every T minutes, and stores the indoor passenger flow information data of the transfer station in the database and displays the information in real time on the display end. For the gravity sensing information collected at the entrances and exits of the transfer station, the information processing module estimates the number of people at the entrances and exits of the transfer station to obtain the entrance and exit passenger flow information of the transfer station and stores the information in the database module, including: Under the action of gravity, the gravity is transmitted to the gravity sensor through the carrier, the elastic body of the gravity sensor is deformed, the strain gauge bridge attached to the elastic body loses balance, and an electric signal proportional to the gravity value is output, the signal is amplified by a linear amplifier, and then converted into a digital signal by an A / D converter, and the digital signal is processed by a microprocessor (CPU) with an instrument to directly display the gravity data. The information processing module continuously records the readings of the gravity sensor and draws a real-time gravity curve. When multiple people pass through the gravity sensor at the same time, it is impossible to simply use the change curve of the sensor reading to obtain the passenger flow, and the sensor reading is a simple superposition of the curve of multiple people passing through the sensor, at which time the function needs to be separated. The gravity change function of each person passing through the gravity sensor is: Fn = fθn(x), 1≤n≤3, and is an integer in the formula, θn is the undetermined parameter matrix in the function; Fn is the sensor reading change curve of each person passing through the sensor; f is the function of θ; The undetermined parameter θn can be extracted by using an unsupervised learning algorithm in machine learning, and a cost function is used to feed back the accuracy of the extraction result; If the undetermined parameter θn of a function is less than 0.05, the influence of the function is ignored, and the number of people is reduced by 1; The information processing module continuously calculates the number of effective functions in the interval, that is, the cumulative transfer station entrance and exit passenger flow, and the transfer station entrance and exit passenger flow passing through in T time, and transmits the data to the central processor for vehicle scheduling scheme adjustment. The information processing module estimates the number of people in the transfer station indoor according to the infrared imaging information collected in the transfer station indoor, obtains the transfer station indoor passenger flow information, and stores the transfer station indoor passenger flow information to the database module; The information processing module selects a reasonable vehicle scheduling scheme or establishes a new vehicle scheduling scheme according to the transfer station entrance and exit passenger flow information and the transfer station indoor passenger flow information, including: According to the transfer station entrance and exit passenger flow information and the transfer station indoor passenger flow information, the change of the transfer station entrance and exit passenger flow and the change of the transfer station indoor passenger flow are obtained; The vehicle scheduling needs to be adjusted according to the change of the transfer station entrance and exit passenger flow and the change of the transfer station indoor passenger flow; Proportional-integral-derivative control (PID control) is adopted, and the deviation is linearly combined to form a control quantity according to proportion, integration and differentiation; The control system can adjust according to the deviation between the actual vehicle scheduling and the planned vehicle scheduling. The rationality of the vehicle scheduling can be improved by adding the differential action on the basis of the proportional action, and the residual error can be eliminated by adding the integral action, so that the vehicle scheduling reaches the optimal. The control module is used to transmit the vehicle scheduling scheme selected or established by the information processing module to the vehicle scheduling control system, and the vehicle scheduling control system controls the vehicle scheduling of the current transfer station and the adjacent transfer station, and stores the adjusted vehicle scheduling scheme in the database module; The database module includes a vehicle scheduling scheme database and a real-time information database, and a BIM model storage database; The vehicle scheduling scheme database stores the vehicle scheduling scheme newly established by the information processing module; and further includes correlation data of passenger flow and vehicle scheduling simulated and calculated by related software according to existing data and related materials, which is stored in the form of function mapping, forming a plurality of vehicle scheduling schemes. The real-time information database is used for storing information from the information receiving module, the transfer station entrance and exit passenger flow information obtained by the information processing module, the transfer station indoor passenger flow information and the vehicle scheduling scheme adjusted by the control module, and is used for subsequent adjustment and optimization of the vehicle scheduling scheme by the information processing module; The BIM model storage database is used for storing the three-dimensional model of the transfer station containing sensor end information; The display end is used for displaying the number and distribution of the real-time passenger flow of the transfer station, the vehicle arrival time and the vehicle departure time in combination with the real-time information and the BIM model.

[0013] Based on the system, the station passenger flow can be effectively and automatically monitored, and the vehicle scheduling scheme can be adjusted according to the passenger flow change.

[0014] The application further provides a method for analyzing the passenger flow of a transfer station based on BIM technology, which is based on any one of the above-mentioned systems for analyzing the passenger flow of a transfer station based on BIM technology.

[0015] The application further provides an electronic device, which comprises a processor and a memory; the processor is used for executing the steps of the above-mentioned method for analyzing the passenger flow of a transfer station based on BIM technology by calling programs or instructions stored in the memory.

[0016] The processor can be a central processing unit (CPU) or other forms of processing units with data processing and / or instruction execution capabilities, and can control other components in the electronic device to perform desired functions.

[0017] The memory can comprise one or more computer program products, which can comprise various forms of computer readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory can comprise, for example, random access memory (RAM), cache memory and the like. The non-volatile memory can comprise, for example, read-only memory (ROM), hard disk, flash memory and the like. One or more computer program instructions can be stored on the computer readable storage medium, and the processor can run the program instructions to realize the functions of the above-mentioned method for analyzing the passenger flow of a transfer station based on BIM technology. Various contents such as initial external parameters, threshold values and the like can also be stored in the computer readable storage medium.

[0018] In one example, the electronic device can further include an input device and an output device, which are interconnected through a bus system and / or other forms of connection mechanisms (not shown). The input device can include, for example, a keyboard, a mouse, and the like. The output device can output various information, including pre-warning prompt information, braking force, and the like, to the outside. The output device can include, for example, a display, a speaker, a printer, a communication network and a remote output device connected thereto, and the like.

[0019] The application further provides a computer readable storage medium, characterized in that the computer readable storage medium stores programs or instructions, which make the computer execute the steps of the above-mentioned method for analyzing passenger flow at a transfer station based on BIM technology.

[0020] The computer readable storage medium can employ any combination of one or more readable media. The readable medium can be a readable signal medium or a readable storage medium. The readable storage medium may, for example, include but is not limited to an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or apparatus, or any combination thereof. More specific examples (non-exhaustive list) of the readable storage medium include an electrical connection having one or more wires, a portable disc, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof.

[0021] Embodiments of the present application can also be a computer program product including computer program instructions that, when executed by a processor, cause the processor to perform the steps of a method for analyzing passenger flow at a transfer station based on BIM technology according to any embodiment of the present application.

[0022] The computer program product can be written in any combination of one or more programming languages, including an object-oriented programming language such as Java, C++, and the like, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code can execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device or entirely on the remote computing device or server.

[0023] It should be noted that the terms used in the present application are only intended to describe specific embodiments and are not intended to limit the scope of the present application. As shown in the specification of the present application, unless the context clearly indicates otherwise, "one", "a", "an", and / or "the" do not specifically refer to the singular, but can also include the plural. The terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of additional identical elements in the process, method or device including the element.

[0024] It should also be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. Unless otherwise specified and limited, the terms "mount", "connect", "connect" and the like should be broadly understood, for example, it can be a fixed connection, or it can be a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can modify the technical solutions described in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present application.

Claims

1. A system for analyzing passenger flow at transfer stations based on BIM technology, characterized in that: The system includes a sensor terminal, a central processing terminal, and a display terminal; The sensor terminal includes a gravity sensing module and an infrared imaging module; The gravity sensing module includes several gravity sensors, which are used to collect gravity sensing information at the entrance and exit of the transfer station and transmit the gravity sensing information to the central processing unit. The infrared imaging module includes several infrared imaging sensors for collecting infrared imaging information inside the transfer station and transmitting the infrared imaging information to the central processing unit. The central processing unit includes an information receiving module, an information processing module, a control module, and a database module; The information receiving module is used to receive information from the gravity sensing module and the infrared imaging module, send it to the information processing module, and store it in the database module. The information processing module is used to process the information from the information receiving module and display the information collected by the gravity sensing module and the infrared imaging module in real time at the sensor positions corresponding to the BIM model. Based on the gravity sensing information collected at the entrance and exit of the transfer station, the information processing module estimates the number of people at the entrance and exit of the transfer station to obtain the passenger flow information at the entrance and exit of the transfer station, and stores the passenger flow information at the entrance and exit of the transfer station in the database module; Based on the infrared imaging information collected inside the transfer station, the information processing module estimates the number of people inside the transfer station to obtain the passenger flow information inside the transfer station, and stores the passenger flow information inside the transfer station in the database module; The information processing module selects a reasonable vehicle dispatching scheme or establishes a new vehicle dispatching scheme based on the passenger flow information at the entrance and exit of the transfer station and the passenger flow information inside the transfer station. The control module is used to transmit the vehicle dispatching scheme selected or established by the information processing module to the vehicle dispatching control system. The vehicle dispatching control system controls the vehicle dispatching at the current transfer station and adjacent transfer stations, and stores the adjusted vehicle dispatching scheme in the database module. The database module includes a vehicle dispatching scheme database, a real-time information database, and a BIM model storage database. The vehicle dispatching scheme database stores the newly created vehicle dispatching schemes by the information processing module. The real-time information database is used to store information from the information receiving module, passenger flow information at the entrance and exit of the transfer station obtained by the information processing module, passenger flow information inside the transfer station, and the vehicle dispatching plan adjusted by the control module, which is used for subsequent adjustment and optimization of the vehicle dispatching plan by the information processing module. The BIM model storage database is used to store three-dimensional models of transfer stations containing sensor information. The display terminal is used to combine real-time information and BIM model to display the real-time passenger flow and distribution of the transfer station, as well as vehicle arrival and departure times.

2. The system for analyzing passenger flow at transfer stations based on BIM technology according to claim 1, characterized in that: The vehicle dispatching scheme database also includes correlation data between pedestrian flow and vehicle dispatching, which is obtained by simulation calculation based on existing data and relevant information using relevant software. This data is stored in the form of function mappings to form several vehicle dispatching schemes.

3. The system for analyzing passenger flow at transfer stations based on BIM technology according to claim 1, characterized in that: The information processing module, based on the passenger flow information at the entrance and exit of the transfer station and the passenger flow information inside the transfer station, selects a reasonable vehicle dispatching scheme or establishes a new vehicle dispatching scheme, including: Based on the passenger flow information at the entrance and exit of the transfer station and the passenger flow information inside the transfer station, the changes in passenger flow at the entrance and exit of the transfer station and the changes in passenger flow inside the transfer station are obtained; The vehicle scheduling that needs to be adjusted is determined based on the changes in pedestrian flow at the entrance and exit of the transfer station and the changes in pedestrian flow inside the transfer station. Proportional-integral-derivative (PID) control is used to form the control quantity by linearly combining the deviation proportionally, integrally, and derivatively. The control system can adjust according to the deviation between the actual vehicle scheduling and the planned vehicle scheduling. Adding a derivative action on the basis of proportional action can improve the rationality of vehicle scheduling, and adding an integral action can eliminate residual error, so that the vehicle scheduling can reach the optimal level.

4. A system for analyzing passenger flow at transfer stations based on BIM technology according to claim 1, characterized in that: The information processing module calculates and generates passenger flow information at the entrance and exit of the transfer station and passenger flow information inside the transfer station every T minutes, stores the data in the database, and displays it in real time on the display terminal.

5. A system for analyzing passenger flow at transfer stations based on BIM technology according to claim 1, characterized in that: The information processing module estimates the number of people at the entrance and exit of the transfer station based on the gravity sensor information collected at the entrance and exit, obtaining passenger flow information at the entrance and exit of the transfer station, including: Under the action of gravity, the gravity is transmitted to the gravity sensor through the load-bearing device, causing the elastic body of the gravity sensor to deform. The strain gauge bridge attached to the elastic body loses its balance and outputs an electrical signal that is directly proportional to the gravity value. The signal is amplified by a linear amplifier and then converted into a digital signal by an A / D converter. The microprocessor (CPU) with instruments processes the digital signal and directly displays the gravity data. The information processing module continuously records the readings of the gravity sensor and plots a real-time gravity curve. When multiple people pass by the gravity sensor simultaneously, the flow of people cannot be simply obtained from the sensor reading curve. The sensor reading is a simple superposition of the curves of multiple people passing by the sensor. In this case, it is necessary to separate the functions: The function for the change in gravity for each person as they pass the gravity sensor is: Fn = fθn(x), 1 ≤ n ≤ 3, and is an integer. In this expression, θn is the matrix of undetermined parameters in the function; Fn is the curve of sensor reading changes when each person passes the sensor; f is a function of θ. Unsupervised learning algorithms in machine learning can be used to extract the gravity change function for each person by determining the parameters to be determined, and the cost function can be used to provide feedback on the accuracy of the extraction results. If the undetermined parameter θn of a function is less than 0.05, then the influence of this function is ignored, and the number of people is reduced by 1. The information processing module continuously calculates the number of effective functions within the interval, which is the accumulated passenger flow at the entrance and exit of the transfer station. It also accumulates the passenger flow at the entrance and exit of the transfer station within time T and transmits the data to the central processor for adjusting the vehicle scheduling plan.

6. A method for analyzing passenger flow at transfer stations based on BIM technology, characterized in that: Based on any one of claims 1-5, a system for analyzing passenger flow at transfer stations using BIM technology is provided to analyze passenger flow at transfer stations.

7. An electronic device, characterized in that, The electronic device includes: a processor and a memory; The processor executes the steps of the method for analyzing passenger flow at transfer stations based on BIM technology as described in claim 6 by calling the program or instructions stored in the memory.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a program or instructions that cause a computer to perform the steps of a method for analyzing passenger flow at a transfer station based on BIM technology as described in claim 6.

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