Energy-saving control method and system for ventilation and air conditioning system of subway station

Abstract

The invention relates to the technical field of rail transit energy-saving control, in particular to an energy-saving control method and system for a subway station ventilation and air conditioning system. The method comprises the steps that first information and second information are obtained, the first information comprises spatial layout information of a subway station, and the second information comprises spatial layout information of the subway station; the second information comprises movement track information corresponding to the passengers shot in the subway station; determining motion characteristics of each passenger according to the first information and the second information to obtain third information; position information of each passenger at each moment is determined according to the third information, fourth information is obtained, and the fourth information comprises the passenger density in the subway station hall; the subway station halls are divided according to the fourth information, and the subway station halls after region division are obtained; according to the method, regional division can be carried out on the station halls of the stations according to different passenger densities of the station halls, and comfort of passengers is ensured while energy is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit energy-saving control, and in particular to an energy-saving control method and system for a subway station ventilation and air-conditioning system. Background Art

[0002] With the continuous development of urban rail transit in my country, further improving the environment in stations and reducing the energy consumption of station operations have become key ways to achieve high-quality development of rail transit. The ventilation and air-conditioning system accounts for a very high proportion of the total energy consumption of the subway environmental control system. Existing technologies usually use sensors to monitor indicators such as temperature and humidity in the station hall, and uniformly adjust the control strategy of the ventilation and air-conditioning system for the station hall based on the monitoring data. However, the environment of the station hall is relatively complex, and the monitoring data for different station hall areas are not the same, and cannot accurately reflect the actual situation of the entire station hall, resulting in inaccurate adjustments to the ventilation and air-conditioning system. Summary of the invention

[0003] The object of the present invention is to provide an energy-saving control method and system for a subway station ventilation and air-conditioning system to improve the above-mentioned problems.

[0004] In order to achieve the above objectives, the present application provides the following technical solutions:

[0005] On the one hand, an embodiment of the present application provides an energy-saving control method for a subway station ventilation and air-conditioning system, the method comprising:

[0006] Acquire first information and second information, wherein the first information includes spatial layout information of the subway station, and the second information includes movement trajectory information corresponding to passengers photographed in the subway station;

[0007] determining the movement characteristics of each passenger according to the first information and the second information to obtain third information;

[0008] Determine the location information of each passenger at each moment according to the third information to obtain fourth information, wherein the fourth information includes the passenger density in the subway station hall;

[0009] Dividing the subway station hall according to the fourth information to obtain the subway station hall after the division;

[0010] The subway station hall after the division is subjected to zoning control to obtain a control strategy for the ventilation and air-conditioning system of the station hall.

[0011] In a second aspect, an embodiment of the present application provides an energy-saving control system for a subway station ventilation and air-conditioning system, the system comprising:

[0012] A first acquisition module is used to acquire first information and second information, wherein the first information includes spatial layout information of the subway station, and the second information includes movement trajectory information corresponding to passengers photographed in the subway station;

[0013] A first processing module, configured to determine a motion characteristic of each passenger according to the first information and the second information to obtain third information;

[0014] A second processing module is used to determine the location information of each passenger at each moment according to the third information to obtain fourth information, wherein the fourth information includes the passenger density in the subway station hall;

[0015] A third processing module is used to divide the subway station hall according to the fourth information to obtain the subway station hall after the division;

[0016] The fourth processing module is used to perform zoning control on the subway station hall after the division of areas, and obtain the control strategy of the ventilation and air-conditioning system of the station hall.

[0017] In a third aspect, an embodiment of the present application provides a subway station ventilation and air conditioning system energy-saving control device, the device comprising a memory and a processor. The memory is used to store a computer program; the processor is used to implement the steps of the subway station ventilation and air conditioning system energy-saving control method when executing the computer program.

[0018] In a fourth aspect, an embodiment of the present application provides a readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of the above-mentioned subway station ventilation and air-conditioning system energy-saving control method are implemented.

[0019] The beneficial effects of the present invention are:

[0020] The present invention determines the movement characteristics of each passenger through the spatial layout information of the subway station and the spatial layout information of the subway station, and then determines the position information of each passenger at each moment according to the movement characteristics of each passenger to determine the passenger density in different areas of the subway station hall to obtain fourth information, and divides the subway station hall according to the fourth information to realize zoning control of the subway station hall. The division of the hall area according to the passenger density accurately reflects the actual situation of the entire hall, thereby accurately adjusting the air supply volume required for each area, and effectively improving the accuracy of the ventilation and air-conditioning system adjustment strategy.

[0021] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by implementing the embodiments of the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a schematic flow chart of the energy-saving control method for the ventilation and air-conditioning system of a subway station described in an embodiment of the present invention.

[0024] Figure 2 It is a schematic diagram of the structure of the energy-saving control system of the subway station ventilation and air-conditioning system described in an embodiment of the present invention.

[0025] Figure 3 It is a schematic diagram of the structure of the energy-saving control equipment of the subway station ventilation and air-conditioning system described in an embodiment of the present invention.

[0026] Labels in the figure: 901, first acquisition module; 902, first processing module; 903, second processing module; 904, third processing module; 905, fourth processing module; 800, subway station ventilation and air-conditioning system energy-saving control equipment; 801, processor; 802, memory; 803, multimedia component; 804, I / O interface; 805, communication component. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. At the same time, in the description of the present invention, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0029] Embodiment 1:

[0030] This embodiment provides an energy-saving control method for the ventilation and air-conditioning system of a subway station. It can be understood that a scenario can be laid out in this embodiment, for example: a scenario in which energy-saving control is required for the air-conditioning and ventilation systems of the station hall and platform in a subway station.

[0031] See also Figure 1 , the figure shows that the method includes step S1, step S2, step S3, step S4 and step S5.

[0032] Step S1, obtaining first information and second information, wherein the first information includes spatial layout information of a subway station, and the second information includes movement trajectory information corresponding to passengers photographed in the subway station;

[0033] In this step, the spatial layout information of the subway station is not limited, and it can be the spatial layout of any subway station. The second information is the movement trajectory of passengers captured by monitoring equipment installed in the subway station hall and subway station platform.

[0034] Step S2, determining the movement characteristics of each passenger according to the first information and the second information to obtain third information;

[0035] The step S2 also includes step S21, step S22, step S23 and step S24, which specifically include:

[0036] Step S21, gridding the subway station to obtain a two-dimensional grid map corresponding to the subway station;

[0037] Step S22, determining at least one node information on a two-dimensional grid map corresponding to the subway station according to the movement trajectory information of the passengers photographed at the subway station, wherein the node information includes connection nodes between different rooms in the subway;

[0038] In this step, the subway station includes multiple rooms, such as a platform, a toilet, etc., and the node information represents the entrance and exit between two rooms.

[0039] Step S23, determining the center coordinates of each grid in the room, and obtaining at least one center coordinate information;

[0040] Step S24: Calculate the distance between each of the center coordinate information and the corresponding node information to obtain the expected direction of the passenger's walking.

[0041] In this step, by calculating the distance between the center coordinates of each grid in a room and the node information, the distance value corresponding to each grid can be calculated, and the smaller grid value is selected as the expected direction of the passenger's next movement. In addition, the social force model can be used to calculate the force between pedestrians, thereby determining the force on each passenger and obtaining the acceleration of each passenger's movement. The position information of each passenger at each moment can be determined based on the acceleration of each passenger's movement, the expected direction of each passenger's walking, and the initial speed. It should be noted that the social force model is a technical solution well known to those skilled in the art, so it will not be described here in detail.

[0042] Step S3, determining the location information of each passenger at each moment according to the third information, and obtaining fourth information, wherein the fourth information includes the passenger density in the subway station hall;

[0043] The step S3 also includes step S31, step S32 and step S33, which specifically include:

[0044] Step S31, constructing at least one Thiessen polygon based on the position information of each passenger at each moment;

[0045] Step S32, calculating each of the Thiessen polygons to obtain density information of each Thiessen polygon;

[0046] In this step, the specific calculation process of the density information of each Thiessen polygon is:

[0047]

[0048] In the above formula, S i represents the area of ​​the ith Thiessen polygon, is the two-dimensional space coordinate (x, y), Represents the density of the i-th Thiessen polygon.

[0049] Step S33: Determine the passenger density in different areas of the subway station hall according to the density information of each Thiessen polygon.

[0050] Step S4, dividing the subway station hall according to the fourth information to obtain the subway station hall after the division;

[0051] In this step, due to the complex situation in the subway station concourse, the same subway station concourse may be more congested in different places, and may be sparsely populated in different places. The required air supply volume is different for areas with different passenger densities. Therefore, the passenger density in different areas of the subway station concourse is calculated to accurately reflect the actual situation of the entire concourse, thereby accurately controlling the ventilation and air-conditioning system of the subway station concourse.

[0052] Step S5: performing zoning control on the subway station hall after the division into areas, and obtaining a control strategy for the ventilation and air-conditioning system of the station hall.

[0053] The prior art usually arranges multiple sensors in the subway station hall to monitor its temperature, humidity and other indicators, and then uniformly adjusts the control strategy of the ventilation and air-conditioning system for the hall according to the monitoring data. This method may not accurately reflect the actual situation of the entire hall due to the limited number of sensors. For example, the area close to the entrance and exit is greatly affected by the outdoor environment, and the parameters may be significantly different from those in the central area of ​​the hall, but the sensor may not be able to capture this local difference, resulting in the ventilation and air-conditioning system The adjustment is not accurate enough. At the same time, in the subway station hall, the air mixing may be uneven, so that the parameters monitored by the sensor cannot represent the actual situation of the actual environment in which the personnel are located, resulting in the inability to make fine adjustments for the complex situation of the subway station hall. Therefore, this application divides the subway station hall by determining the passenger density of different areas in the subway station hall, and makes fine adjustments for different passenger densities, which not only meets the required air supply volume for each area but also effectively improves the energy-saving efficiency.

[0054] The step S5 also includes step S51, step S52, step S53 and step S54, which specifically include:

[0055] Step S51, determining the degree of congestion in different areas of the station hall according to the fourth information to obtain a congestion level;

[0056] In this step, a specific implementation method is: according to different passenger densities, the area of ​​the corresponding subway station hall is divided into different degrees of congestion levels, wherein specifically: when When , it is a non-congested area; when When , it is slightly congested, that is, the first-level congestion area; when When it is congested, it is the second-level congestion area; When , it is congested, that is, the third-level congestion area.

[0057] Step S52: Divide the station hall according to the congestion level to obtain the subway station hall after the divided areas;

[0058] Step S53, determining the ventilation volume required for each of the divided areas in the subway station hall;

[0059] Step S54: adjusting the opening of the air duct valve in each area according to the ventilation volume required by each area.

[0060] In this step, different areas with different congestion levels require different air supply volumes. Areas with higher congestion levels require higher air supply volumes, and the opening of the air duct valve in the corresponding area is larger.

[0061] After step S5, the method further includes steps S6, S7, S8, S9 and S10, which specifically include:

[0062] Step S6, obtaining video information, wherein the video information includes video information of passengers arriving at a subway platform from a subway;

[0063] In this step, video information is captured by monitoring equipment installed on the subway station platform.

[0064] Step S7, extracting video frame images corresponding to at least two passengers from the video information;

[0065] Step S8, performing facial emotion recognition on the video frame image to obtain an emotion recognition result of the passenger;

[0066] In this step, the specific process of performing facial emotion recognition on video frame images is: determining the feature points of each face in the video frame image; calculating the degree of change of each face based on the feature points of each face in the video frame image; determining the degree of change of the face corresponding to the video frame image based on the degree of change of each face, and obtaining the passenger's emotion recognition result.

[0067] It should be noted that there is a temperature difference between the air-conditioning temperature in the subway and the air-conditioning temperature on the subway station platform. The passenger emotion recognition results can be used to analyze whether the passenger is satisfied with the air-conditioning temperature on the subway station platform, thereby judging whether the passenger is satisfied with the temperature environment on the subway station platform.

[0068] Step S9, determining the passenger's satisfaction with the platform temperature according to the emotion recognition result, and obtaining satisfaction information;

[0069] Step S10: determining a control strategy for the station platform ventilation and air-conditioning system according to the satisfaction information.

[0070] In this embodiment, the structures of the station hall and the station platform are different. The station platform is smaller than the station hall and has more concentrated passenger flow. Therefore, different control strategies need to be adopted for the subway station hall and the subway station platform. The existing technology usually adjusts the temperature of the subway station platform by setting a fixed target temperature, which cannot take into account the actual needs of passengers. Therefore, in the present invention, face recognition through video images can analyze the degree of emotional changes of passengers, judge whether the passengers are satisfied with the temperature environment of the subway station platform, and determine whether the ventilation and air-conditioning system needs to be adjusted to meet the needs of passengers. Under the condition of ensuring the degree of satisfaction, the purpose of energy-saving control is achieved.

[0071] The step S10 also includes step S101, step S102, step S103, step S104 and step S105, which specifically include:

[0072] Step S101, calculating the average passenger satisfaction value according to the satisfaction information corresponding to each video frame image, and obtaining a calculation result;

[0073] In this step, since there are multiple video frame images in the platform, it is necessary to calculate the mean of the satisfaction information corresponding to each video frame image in order to accurately reflect whether the overall passengers are satisfied with the current temperature environment.

[0074] Step S102: determine whether the satisfaction mean is less than a preset satisfaction threshold, and obtain a determination result;

[0075] Step S103, determining the target temperature of the platform according to the judgment result;

[0076] In this step, when the judgment result is that the mean satisfaction value is less than the preset satisfaction threshold, it indicates that the passengers are not satisfied with the current temperature environment and the target temperature of the platform needs to be adjusted; when the judgment result is that the mean satisfaction value is not less than the preset satisfaction threshold, it indicates that the target temperature of the platform does not need to be modified at this time.

[0077] Step S104, determining the air supply volume of the ventilation and air conditioning system according to the target temperature of the platform;

[0078] In this step, the specific process of determining the air supply volume of the ventilation and air-conditioning system is: obtaining the heat load information of the equipment; determining the passenger flow of the platform based on the video information; determining the heat load information of the passengers based on the passenger flow of the platform; determining the total heat load information based on the heat load information of the equipment and the heat load information of the passengers; and determining the air supply volume of the ventilation and air-conditioning system based on the total heat load information.

[0079] Step S105: adjusting the station platform ventilation and air conditioning system according to the air supply volume of the ventilation and air conditioning system.

[0080] In this step, adjusting the station platform ventilation and air-conditioning system also includes judging the size of the outdoor temperature and the subway station platform temperature. When the outdoor temperature is lower than the subway station platform temperature, starting the ventilation system first; judging whether the air volume introduced by the ventilation system can modify the subway station platform temperature to the target temperature. If not, starting the air-conditioning system to adjust the subway station platform temperature.

[0081] Embodiment 2:

[0082] like Figure 2As shown, this embodiment provides an energy-saving control system for a subway station ventilation and air-conditioning system, the system includes a first acquisition module 901, a first processing module 902, a second processing module 903, a third processing module 904 and a fourth processing module 905, which specifically include:

[0083] A first acquisition module 901 is used to acquire first information and second information, wherein the first information includes spatial layout information of a subway station, and the second information includes movement trajectory information corresponding to passengers photographed in the subway station;

[0084] A first processing module 902, configured to determine a motion characteristic of each passenger according to the first information and the second information to obtain third information;

[0085] The second processing module 903 is used to determine the location information of each passenger at each moment according to the third information to obtain fourth information, wherein the fourth information includes the passenger density in the subway station hall;

[0086] The third processing module 904 is used to divide the subway station hall according to the fourth information to obtain the subway station hall after the division;

[0087] The fourth processing module 905 is used to perform zoning control on the subway station hall after the division into areas, and obtain a control strategy for the ventilation and air-conditioning system of the station hall.

[0088] In a specific embodiment of the present disclosure, the first processing module includes a first processing unit, a second processing unit, a third processing unit and a fourth processing unit, which specifically include:

[0089] The first processing unit is used to divide the subway station into grids to obtain a two-dimensional grid map corresponding to the subway station;

[0090] A second processing unit is used to determine at least one node information on a two-dimensional grid map corresponding to the subway station according to the movement trajectory information of the passengers photographed at the subway station, wherein the node information includes connection nodes between different rooms in the subway;

[0091] A third processing unit is used to determine the center coordinates of each grid in the room and obtain at least one center coordinate information;

[0092] The fourth processing unit is used to calculate the distance between each of the center coordinate information and the corresponding node information to obtain the expected direction of the passenger's walking.

[0093] In a specific embodiment of the present disclosure, the second processing module includes a fifth processing unit, a sixth processing unit and a seventh processing unit, which specifically include:

[0094] A fifth processing unit, configured to construct at least one Thiessen polygon based on the position information of each passenger at each moment;

[0095] A sixth processing unit, used for calculating each of the Thiessen polygons to obtain density information of each Thiessen polygon;

[0096] The seventh processing unit is used to determine the passenger density in different areas of the subway station hall according to the density information of each Thiessen polygon.

[0097] In a specific implementation of the present disclosure, the fourth processing module includes an eighth processing unit, a ninth processing unit, a tenth processing unit and an eleventh processing unit, which specifically include:

[0098] An eighth processing unit, configured to determine the degree of congestion in different areas of the station hall according to the fourth information to obtain a congestion level;

[0099] A ninth processing unit, configured to divide the station hall according to the congestion level to obtain the subway station hall after the divided areas;

[0100] A tenth processing unit, used for determining the ventilation volume required for the subway station hall after each of the divided areas;

[0101] The eleventh processing unit is used to adjust the opening of the air duct valve of each area according to the ventilation volume required by each area.

[0102] In a specific embodiment of the present disclosure, the fourth processing module further includes a second acquisition module, a fifth processing module, a sixth processing module, a seventh processing module and an eighth processing module, which specifically include:

[0103] A second acquisition module is used to acquire video information, wherein the video information includes video information of passengers arriving at a subway platform from a subway;

[0104] A fifth processing module, configured to extract video frame images corresponding to at least two passengers from the video information;

[0105] A sixth processing module, used to perform facial emotion recognition on the video frame image to obtain an emotion recognition result of the passenger;

[0106] a seventh processing module, configured to determine the passenger's satisfaction with the platform temperature according to the emotion recognition result, and obtain satisfaction information;

[0107] The eighth processing module is used to determine the control strategy of the station platform ventilation and air-conditioning system according to the satisfaction information.

[0108] In a specific implementation of the present disclosure, the eighth processing module includes a calculation unit, a judgment unit, a twelfth processing unit, a thirteenth processing unit and a fourteenth processing unit, which specifically include:

[0109] A calculation unit, used to calculate the average satisfaction of passengers according to the satisfaction information corresponding to each video frame image, and obtain a calculation result;

[0110] A judging unit, used to judge whether the satisfaction mean is less than a preset satisfaction threshold, and obtain a judging result;

[0111] a twelfth processing unit, configured to determine a target temperature of the platform according to the determination result;

[0112] a thirteenth processing unit, configured to determine an air supply volume of a ventilation and air conditioning system according to a target temperature of the station;

[0113] The fourteenth processing unit is used to adjust the station platform ventilation and air-conditioning system according to the air supply volume of the ventilation and air-conditioning system.

[0114] It should be noted that, regarding the system in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0115] Embodiment 3:

[0116] Corresponding to the above method embodiment, this embodiment also provides an energy-saving control device for a subway station ventilation and air-conditioning system. The energy-saving control device for a subway station ventilation and air-conditioning system described below and the energy-saving control method for a subway station ventilation and air-conditioning system described above can be referenced to each other.

[0117] Figure 3 FIG. 8 is a block diagram of a subway station ventilation and air conditioning system energy-saving control device 800 according to an exemplary embodiment. Figure 3 As shown, the subway station ventilation and air conditioning system energy-saving control device 800 may include: a processor 801, a memory 802. The subway station ventilation and air conditioning system energy-saving control device 800 may also include one or more of a multimedia component 803, an I / O interface 804, and a communication component 805.

[0118] The processor 801 is used to control the overall operation of the subway station ventilation and air conditioning system energy-saving control device 800 to complete all or part of the steps in the above-mentioned subway station ventilation and air-conditioning system energy-saving control method. The memory 802 is used to store various types of data to support the operation of the subway station ventilation and air-conditioning system energy-saving control device 800, and these data may include, for example, instructions for any application or method operating on the subway station ventilation and air-conditioning system energy-saving control device 800, and application-related data, such as contact data, sent and received messages, pictures, audio, video, etc. The memory 802 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, disk or optical disk. The multimedia component 803 may include a screen and an audio component. The screen may be, for example, a touch screen, and the audio component is used to output and / or input audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signal may be further stored in the memory 802 or sent via the communication component 805. The audio component also includes at least one speaker for outputting audio signals. The I / O interface 804 provides an interface between the processor 801 and other interface modules, and the above-mentioned other interface modules can be keyboards, mice, buttons, etc. These buttons can be virtual buttons or physical buttons. The communication component 805 is used for wired or wireless communication between the subway station ventilation and air-conditioning system energy-saving control device 800 and other devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G or 4G, or a combination of one or more of them, so the corresponding communication component 805 can include: Wi-Fi module, Bluetooth module, NFC module.

[0119] In an exemplary embodiment, the subway station ventilation and air-conditioning system energy-saving control device 800 can be implemented by one or more application-specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field programmable gate arrays (FPGA), controllers, microcontrollers, microprocessors or other electronic components to execute the above-mentioned subway station ventilation and air-conditioning system energy-saving control method.

[0120] In another exemplary embodiment, a computer-readable storage medium including program instructions is also provided, and when the program instructions are executed by a processor, the steps of the above-mentioned subway station ventilation and air-conditioning system energy-saving control method are implemented. For example, the computer-readable storage medium can be the above-mentioned memory 802 including program instructions, and the above-mentioned program instructions can be executed by the processor 801 of the subway station ventilation and air-conditioning system energy-saving control device 800 to complete the above-mentioned subway station ventilation and air-conditioning system energy-saving control method.

[0121] Embodiment 4:

[0122] Corresponding to the above method embodiment, a readable storage medium is also provided in this embodiment. The readable storage medium described below and the energy-saving control method for the ventilation and air-conditioning system of a subway station described above can refer to each other.

[0123] A readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the subway station ventilation and air-conditioning system energy-saving control method of the above method embodiment.

[0124] The readable storage medium may specifically be a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, or other readable storage medium that can store program codes.

[0125] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0126] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A method for energy saving control of ventilation and air conditioning system in subway station, characterized in that: The method comprises: Acquire first information and second information, wherein the first information includes spatial layout information of the subway station, and the second information includes movement trajectory information corresponding to passengers photographed in the subway station; determining the movement characteristics of each passenger according to the first information and the second information to obtain third information; Determine the location information of each passenger at each moment according to the third information to obtain fourth information, wherein the fourth information includes the passenger density in the subway station hall; Dividing the subway station hall according to the fourth information to obtain the subway station hall after the division; The subway station hall after the division is subjected to zoning control to obtain a control strategy for the ventilation and air-conditioning system of the station hall.

2. The subway station ventilation and air conditioning system energy-saving control method according to claim 1, characterized in that: Determining the motion characteristics of each passenger according to the first information and the second information includes: Divide the subway station into grids to obtain a two-dimensional grid map corresponding to the subway station; Determine at least one node information on a two-dimensional grid map corresponding to the subway station according to the movement trajectory information of the passengers photographed at the subway station, wherein the node information includes connection nodes between different rooms in the subway; Determine the center coordinates of each grid in the room and obtain at least one center coordinate information; The distance between each of the center coordinate information and the corresponding node information is calculated to obtain the expected direction of the passenger's walking.

3. The energy-saving control method for subway station ventilation and air-conditioning system according to claim 1, characterized in that: Determining the location information of each passenger at each moment according to the third information includes: Construct at least one Thiessen polygon based on the position information of each passenger at each moment; Calculate each Thiessen polygon to obtain density information of each Thiessen polygon; The passenger density of different areas in the subway station hall is determined according to the density information of each Thiessen polygon.

4. The subway station ventilation and air conditioning system energy-saving control method according to claim 1, characterized in that: The subway station hall after the division is controlled in different areas to obtain a control strategy for the ventilation and air conditioning system of the station hall, including: Determine the degree of congestion in different areas of the station hall according to the fourth information to obtain a congestion level; Dividing the station hall according to the congestion level to obtain the subway station hall after the divided areas; Determine the ventilation volume required for the subway station hall after each of the divided areas; Adjust the opening of the air duct valve in each area according to the ventilation volume required in each area.

5. The subway station ventilation and air conditioning system energy-saving control method according to claim 1, characterized in that: After performing zoning control on the subway station hall after the division of the areas and obtaining the control strategy of the ventilation and air-conditioning system of the station hall, the method further includes: Acquiring video information, wherein the video information includes video information of passengers arriving at a subway platform from a subway; Extracting video frame images corresponding to at least two passengers from the video information; Performing facial emotion recognition on the video frame image to obtain an emotion recognition result of the passenger; Determine the passenger's satisfaction with the platform temperature according to the emotion recognition result to obtain satisfaction information; A control strategy for the station platform ventilation and air-conditioning system is determined according to the satisfaction information.

6. The subway station ventilation and air conditioning system energy-saving control method according to claim 5, characterized in that: Determine a control strategy for the station platform ventilation and air conditioning system according to the satisfaction information, including: Calculate the average passenger satisfaction value according to the satisfaction information corresponding to each video frame image to obtain a calculation result; Determine whether the satisfaction mean is less than a preset satisfaction threshold, and obtain a determination result; Determining a target temperature of the station according to the determination result; determining the air supply volume of the ventilation and air conditioning system according to the target temperature of the station; The station platform ventilation and air conditioning system is adjusted according to the air supply volume of the ventilation and air conditioning system.

7. An energy-saving control system for ventilation and air-conditioning systems in subway stations, characterized in that: The method comprises: A first acquisition module is used to acquire first information and second information, wherein the first information includes spatial layout information of the subway station, and the second information includes movement trajectory information corresponding to passengers photographed in the subway station; A first processing module, configured to determine a motion characteristic of each passenger according to the first information and the second information to obtain third information; A second processing module is used to determine the location information of each passenger at each moment according to the third information to obtain fourth information, wherein the fourth information includes the passenger density in the subway station hall; A third processing module is used to divide the subway station hall according to the fourth information to obtain the subway station hall after the division; The fourth processing module is used to perform zoning control on the subway station hall after the division of areas, and obtain the control strategy of the ventilation and air-conditioning system of the station hall.

8. The subway station ventilation and air conditioning system energy-saving control system according to claim 7, characterized in that: The first processing module comprises: The first processing unit is used to divide the subway station into grids to obtain a two-dimensional grid map corresponding to the subway station; A second processing unit is used to determine at least one node information on a two-dimensional grid map corresponding to the subway station according to the movement trajectory information of the passengers photographed at the subway station, wherein the node information includes connection nodes between different rooms in the subway; A third processing unit is used to determine the center coordinates of each grid in the room and obtain at least one center coordinate information; The fourth processing unit is used to calculate the distance between each of the center coordinate information and the corresponding node information to obtain the expected direction of the passenger's walking.

9. The subway station ventilation and air conditioning system energy-saving control system according to claim 7, characterized in that: The second processing module comprises: A fifth processing unit, configured to construct at least one Thiessen polygon based on the position information of each passenger at each moment; A sixth processing unit, used for calculating each of the Thiessen polygons to obtain density information of each Thiessen polygon; The seventh processing unit is used to determine the passenger density in different areas of the subway station hall according to the density information of each Thiessen polygon.

10. The subway station ventilation and air conditioning system energy-saving control method system according to claim 7, characterized in that: The fourth processing module comprises: An eighth processing unit, configured to determine the degree of congestion in different areas of the station hall according to the fourth information to obtain a congestion level; A ninth processing unit, configured to divide the station hall according to the congestion level to obtain the subway station hall after the divided areas; A tenth processing unit, used for determining the ventilation volume required for the subway station hall after each of the divided areas; The eleventh processing unit is used to adjust the opening of the air duct valve of each area according to the ventilation volume required by each area.

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