Subway station emergency evacuation guiding system and method based on digital base

Abstract

The invention discloses a subway station emergency evacuation guiding system and method based on a digital base. The system comprises a station digital base, a monitoring work station, a special monitoring module, a PIS information screen, an exit indication screen and a controllable illumination lamp strip. The station digital base is in communication connection with the special monitoring module, the PIS information screen, the exit indication screen and the controllable illumination lamp strip; the special monitoring module receives a fire alarm signal sent by the station digital base, calculates working modes of the PIS information screen, the exit indication screen and the controllable lighting lamp strip and sends the working modes to the station digital base; the station digital base generates a corresponding working mode instruction and sends the working mode instruction to the PIS information screen, the exit indication screen and the controllable illumination lamp strip so as to display corresponding evacuation guide information; according to the invention, the evacuation guide identifier and the guide information can be dynamically adjusted according to the fire position, and the evacuation capability of the subway station under the sudden disaster condition is effectively improved; existing station electromechanical equipment is fully utilized, extra expenditure is not needed, and cost control is facilitated.

Description

Technical Field

[0001] The present invention relates to the field of rail transit technology, and in particular to a subway station emergency evacuation guidance system and method based on a digital base. Background Art

[0002] Emergency evacuation guidance is an important part of subway station emergency management. At present, the emergency plans of subway stations are mainly based on manual on-site evacuation, which often leads to panic and inadequate implementation in emergencies. The existing passenger information system (PIS) has the function of switching to display emergency evacuation information in the event of a fire, but the evacuation information is fixed information preset in the system and cannot provide targeted escape direction instructions for passengers in different areas.

[0003] In addition, the number of PIS information screens in subway stations is the same as the number of train formations, and the spacing between them is long. Passengers in some platform areas cannot see the PIS information screens, especially when a fire occurs in the station and smoke spreads. The visual distance of passengers is even shorter. The lack of effective evacuation guidance information in the event of a sudden disaster will cause passengers to be at a loss and psychological changes, affecting their chances of escape. Directly increasing the number of PIS information screens is a simple way to solve the low distribution density of existing PIS information screens, but increasing the number of PIS information screens will increase the cost of station construction and affect the overall style of the station, which has great limitations.

[0004] A typical subway station adopts a two-story underground structure, with the first underground floor being the station hall and the second underground floor being the platform floor. The platform floor is the passenger waiting area and is a key area for emergency evacuation management. The platform floor is a long and narrow structure with several sets of evacuation stairs and escalators from the platform floor to the station hall floor. An exit indicator light box is installed above each set of stairs and escalators. The guidance signs displayed on the existing exit indicator light box are fixed and cannot be switched to display emergency evacuation exit signs in the event of a fire at the station. The existing emergency plan for arranging manual guidance by station attendants at the evacuation exit is obviously difficult to cope with the large passenger flow evacuation requirements in the event of a sudden disaster.

[0005] The station digital base technology is a data-fusion and shared rail transit station infrastructure platform built based on the latest Internet of Things platform technology. It reshapes the traditional hierarchical station electromechanical system into a flat-structured station digital base system, eliminates the intermediate monitoring system, and directly connects the station electromechanical equipment to the station digital base, thereby simplifying the system hierarchy, reducing construction costs, breaking through professional data barriers, and improving equipment operation and maintenance efficiency.

[0006] The ideal subway station evacuation guidance system should be an intelligent system that covers the entire area and can dynamically indicate the escape direction according to the location of the fire. The promotion and application of digital base technology in stations and the upgrade of station equipment access methods have also created technical conditions for the construction of new evacuation guidance systems. However, the station construction cost and the station emergency management function are two contradictory aspects. With a limited station construction budget, it is very difficult to achieve full coverage of evacuation guidance. Therefore, how to make full use of the equipment resources within the construction budget to realize the emergency management function and achieve the goal of combining peacetime and wartime and cost control is the difficulty in the design of a new evacuation guidance system.

[0007] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art. Summary of the invention

[0008] The purpose of the present invention is to propose a subway station emergency evacuation system and method, which can overcome the contradiction between the incomplete emergency evacuation guidance function of existing subway stations and the full coverage of evacuation guidance information and the high construction cost, and realize dynamic evacuation guidance function based on the location of the fire and emergency evacuation guidance function with full coverage on the basis of making full use of equipment resources within the construction budget.

[0009] To achieve the above-mentioned object, the present invention proposes a subway station emergency evacuation guidance system based on a digital base, comprising: a station digital base, a monitoring workstation, a dedicated monitoring module, a plurality of PIS information screens, a plurality of exit indicator screens and a plurality of controllable lighting strips; the station digital base is respectively connected to the dedicated monitoring module, each PIS information screen, each exit indicator screen and each controllable lighting strip in communication; the monitoring workstation is connected to the dedicated monitoring module through the network of the station digital base;

[0010] The dedicated monitoring module receives the first fire alarm signal sent by the station digital base or the second fire alarm signal sent by the monitoring workstation, and calculates the first working mode of the PIS information screen, the second working mode of the exit indication screen and the third working mode of the controllable lighting strip according to the fire location information corresponding to the first fire alarm signal or the second fire alarm signal and the station boundary conditions, and sends the calculated working mode to the station digital base; the station digital base generates corresponding first working mode instructions, second working mode instructions and third working mode instructions according to the received first working mode, second working mode and third working mode, and sends them to the PIS information screen, exit indication screen and controllable lighting strip to display the corresponding evacuation guidance information.

[0011] Optionally, the station digital base also communicates with the fire detection equipment, receives the first fire alarm signal sent by the fire detection equipment, and sends it to the dedicated monitoring module; the dedicated monitoring module provides a station floor plan page, and the monitoring workstation calls and displays the station floor plan page through the network of the station digital base. The station duty personnel clicks on the fire alarm on the station floor plan page through the monitoring workstation to generate the second fire alarm signal, and the monitoring workstation sends the second fire alarm signal to the dedicated monitoring module through the network of the station digital base.

[0012] Optionally, the dedicated monitoring module also monitors the PIS information screen, exit indication screen and controllable lighting strip in real time and provides corresponding graphical monitoring pages; the monitoring workstation calls the monitoring page through the network of the station digital base to monitor the working mode of the PIS information screen, exit indication screen and controllable lighting strip and the overall evacuation guidance effect of the station in real time.

[0013] Optionally, the exit indicator screen includes a Type I LED control module and a Type I LED display module that are communicatively connected, and the Type I LED control module is communicatively connected to the station digital base, receives a second working mode instruction sent by the station digital base, and controls the Type I LED display module to display a corresponding indication mark; the controllable lighting strip includes a Type II LED control module and a Type II LED display module, and the Type II LED control module is communicatively connected to the station digital base, receives a third working mode instruction sent by the station digital base, and controls the Type II LED display module to display a corresponding light color image.

[0014] The present invention also proposes a subway station emergency evacuation guidance method based on a digital base, using the subway station emergency evacuation guidance system based on a digital base, comprising the following steps:

[0015] S1. Set up the PIS information screen, exit indicator screen and controllable lighting strip, and record their physical locations in the dedicated monitoring module;

[0016] S2. When the station digital base receives the fire alarm signal, the fire alarm signal and the fire location information corresponding to the fire alarm signal are sent to the dedicated monitoring module;

[0017] S3, the dedicated monitoring module calculates the first working mode of each PIS information screen, the second working mode of each exit indicator screen and the third working mode of each controllable lighting strip;

[0018] S4. The dedicated monitoring module sends the calculated first working mode of each PIS information screen, the second working mode of each exit indication screen and the third working mode of each controllable lighting strip to the station digital base, and the station digital base sends the corresponding first working mode instructions, second working mode instructions and third working mode instructions to each PIS information screen, exit indication screen and controllable lighting strip, so that it displays the corresponding evacuation guidance information.

[0019] Optionally, in step S1, a plurality of controllable lighting strips are set based on the position of each PIS information screen, and a plurality of exit indicator screens are set at each entrance and exit of the station, wherein the specific steps of setting a plurality of controllable lighting strips based on the position of each PIS information screen include:

[0020] S11, sequentially calculating the installation position of the controllable lighting strip in each terminal area of ​​the station: calculating the longitudinal distance D3 of the terminal area, and then calculating the number X3 of the controllable lighting strips to be set in the terminal area, X3 is the integer quotient of the longitudinal distance D3 of the terminal area / the third threshold, and then arranging the installation position of the controllable lighting strip according to the calculated number X3 of the controllable lighting strips in the terminal area; wherein the third threshold is the threshold of the passenger visual distance;

[0021] S12, sequentially calculating the installation position of the controllable lighting strip in each middle area of ​​the station: calculating the longitudinal distance of the middle area, and then calculating the number X4 of controllable lighting strips to be set in the middle area, where X4 is the integer quotient of the longitudinal distance D4 of the middle area / the third threshold value, and then arranging the installation position of the controllable lighting strip according to the calculated number X4 of controllable lighting strips in the middle area;

[0022] S13. Install the controllable lighting strip according to the installation position of the controllable lighting strip calculated in S11 and S12.

[0023] Optionally, step S3 is specifically as follows: under normal circumstances, the dedicated monitoring module sets the first working mode of the PIS information screen, the second working mode of the exit indication screen, and the third working mode of the controllable lighting strip to 0; when a fire alarm signal is received, according to the corresponding fire location information and station boundary conditions, the dedicated monitoring module uses the shortest path algorithm to calculate the optimal evacuation path, and then determines the first working mode of each PIS information screen, the second working mode of each exit indication screen, and the third working mode of each controllable lighting strip.

[0024] Optionally, when receiving a fire alarm signal, the step of the dedicated monitoring module calculating the working mode includes:

[0025] S31, taking each PIS information screen, exit indicator screen and controllable lighting strip as an evacuation path node, calculating the distance between each node according to the physical position of each node, and constructing an adjacency matrix;

[0026] S32, sequentially calculating the straight-line distance D1 between each node and the fire location and comparing it with the first threshold and the second threshold; if D1 is less than or equal to the first threshold, the node is determined to be unavailable, and the distance between the node and the adjacent node is set to infinity; if D1 is greater than the first threshold and less than or equal to the second threshold, the shortest distance D2 between the straight-line path formed by the node and the adjacent nodes and the fire location is calculated and compared with the first threshold; if D2 is less than or equal to the first threshold, the path is determined to be unavailable, and the distance of the path is set to infinity;

[0027] S33, using the Floyd optimal path algorithm to calculate the distance matrix and path matrix from each PIS information screen and each controllable lighting strip to each exit indicator screen, to form a shortest path set;

[0028] S34, determining the optimal evacuation path according to the shortest path set, specifically: for each PIS information screen and each controllable lighting strip, comparing the distances from the PIS information screen or controllable lighting strip to each exit indicator screen in the shortest path set, and selecting the exit indicator screen with the shortest distance, and using the path from the PIS information screen or controllable lighting strip to the exit indicator screen as the optimal evacuation path for the PIS information screen or controllable lighting strip;

[0029] S35, calculating the first working mode of each PIS information screen, the second working mode of each exit indicator screen, and the third working mode of each controllable lighting strip.

[0030] Optionally, in step S35, the step of calculating the second working mode of the exit indicator screen is specifically: setting the second working mode of the exit indicator screen determined to be unavailable in step S32 to 99, and setting the second working modes of other exit indicator screens to 1;

[0031] The calculation steps of the first working mode of the PIS information screen are specifically as follows: the first working mode of the PIS information screen determined to be unavailable in step S32 is set to 99; for each PIS information screen that is not determined to be unavailable, the position of the exit indicator screen in the optimal evacuation path corresponding to the PIS information screen is determined; if the exit indicator screen in the optimal evacuation path corresponding to the PIS information screen is on the left side of the PIS information screen, the first working mode of the PIS information screen is set to 2; if the exit indicator screen in the optimal evacuation path corresponding to the PIS information screen is on the right side of the PIS information screen, the first working mode of the PIS information screen is set to 3;

[0032] The calculation steps of the third working mode of the controllable lighting strip are specifically as follows: setting the third working mode of the controllable lighting strip determined to be unavailable in step S32 to 99; for each controllable lighting strip that is not determined to be unavailable, determining the position of the exit indicator screen in the optimal evacuation path corresponding to the controllable lighting strip; if the exit indicator screen in the optimal evacuation path corresponding to the controllable lighting strip is on the left side of the controllable lighting strip, setting the third working mode of the controllable lighting strip to 2; if the exit indicator screen in the optimal evacuation path corresponding to the controllable lighting strip is on the right side of the controllable lighting strip, setting the third working mode of the controllable lighting strip to 3.

[0033] Optionally, in step S4, each of the PIS information screen, exit indicator screen and controllable lighting strip displays corresponding evacuation guidance information according to the working mode instruction, specifically:

[0034] If the exit indication screen receives the second working mode instruction set to 0, it will display the entrance and exit indication information under normal operation; if it receives the second working mode instruction set to 1, it will display the safety exit sign; if it receives the second working mode instruction set to 99, it will display the sign indicating that the evacuation exit is dangerous and unavailable;

[0035] If the PIS information screen receives the first working mode instruction set to 0, it will display the passenger service information under normal operation; if it receives the first working mode instruction set to 2, it will display the left evacuation sign and station evacuation information; if it receives the first working mode instruction set to 3, it will display the right evacuation sign and station evacuation information; if it receives the first working mode instruction set to 99, it will display the danger sign of this area;

[0036] If the controllable lighting strip receives the third working mode instruction set to 0, the normal lighting mode of the station will be executed; if it receives the third working mode instruction set to 2, the left evacuation sign will be displayed; if it receives the third working mode instruction set to 3, the right evacuation sign will be displayed; if it receives the third working mode instruction set to 99, the danger sign for this area will be displayed.

[0037] Compared with the prior art, the technical solution of the present invention has at least the following advantages and beneficial effects:

[0038] The present invention proposes a subway station emergency evacuation guidance system and method based on a digital base, which covers the entire subway station, sets a dedicated monitoring module to receive the fire alarm signal sent by the station digital base, and calculates the working mode of the PIS information screen, the exit indicator screen and the controllable lighting strip, so that the evacuation guidance signs and guidance information can be dynamically adjusted according to the fire location, effectively improving the evacuation capacity of the subway station and the escape probability of passengers in the event of an emergency disaster;

[0039] This plan makes full use of the existing station electromechanical equipment and systems, does not require additional funds for construction, does not increase the number of station equipment, does not change the installation method of station equipment, does not affect the overall layout and decoration style of the station, and is conducive to cost control;

[0040] This scheme follows the principle of combining peacetime and wartime, and the station emergency equipment is used together with the station conventional equipment, and the system construction cost is relatively low;

[0041] This solution adopts digital base technology, and while sharing the digital base resource capabilities of the station, it creates a new scenario for emergency evacuation in the station, better supporting the digital transformation and development of the rail transit industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 This is a structural schematic diagram of a subway station emergency evacuation guidance system based on a digital base according to an embodiment of the present invention;

[0043] Figure 2 A schematic diagram of a flow chart of a subway station emergency evacuation guidance method based on a digital base according to an embodiment of the present invention;

[0044] Figure 3 Schematic diagram of the installation position of the controllable lighting strip in an embodiment of the present invention. DETAILED DESCRIPTION

[0045] The following will be combined with the embodiments of the present invention Figure 1 to Figure 3 , the technical solutions, structural features, objectives achieved and effects in the embodiments of the present invention are described in detail.

[0046] It should be noted that the drawings are in a very simplified form and use non-precise proportions. They are only used to conveniently and clearly assist in explaining the embodiments of the present invention, and are not used to limit the conditions for the implementation of the present invention. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical content disclosed by the present invention.

[0047] It should be noted that, in the present invention, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only the elements explicitly listed, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] In order to overcome the contradiction between the incomplete emergency evacuation guidance function of existing subway stations and the full coverage of evacuation guidance information and the high construction cost, the dynamic evacuation guidance function based on the fire location and the full coverage emergency evacuation guidance function are realized on the basis of making full use of the equipment resources within the budget. On the basis of not adding additional equipment, the present invention proposes a subway station emergency evacuation guidance system and method based on a digital base, which covers the entire area of ​​the subway station, sets a special monitoring module to receive the fire alarm signal sent by the digital base of the station, and calculates the working mode of the PIS information screen, the exit indication screen and the controllable lighting strip, so that the evacuation guidance signs and guidance information can be dynamically adjusted according to the fire location, effectively improving the evacuation capacity of the subway station in the event of a sudden disaster, and the system does not require additional funds for construction, makes full use of the existing station electromechanical equipment, and is conducive to cost control.

[0049] In order to better understand the technical solution and technical effects of the present application, specific embodiments will be described in detail below with reference to the accompanying drawings.

[0050] See also Figure 1 , which is a subway station emergency evacuation guidance system based on a digital base according to an embodiment of the present invention, includes a station digital base 1, a monitoring workstation 2, a dedicated monitoring module 3, a plurality of PIS (passenger information system) information screens 4, a plurality of exit indication screens 5 and a plurality of controllable lighting strips 6.

[0051] The station digital base 1 is a station-level platform, which can also be called a station digital operation system. The station digital base 1 is respectively connected to the dedicated monitoring module 3, each PIS information screen 4, each exit indicator screen 5 and each controllable lighting strip 6. The station digital base 1 also communicates with other electromechanical equipment in the station, such as fire detection equipment, so as to realize direct IoT access of the station electromechanical equipment, and provides a basis for the station digital base 1 to collect and uniformly manage information such as the station equipment status, environmental parameters and fire alarm signals. When the fire detection equipment detects a fire, it sends a first fire alarm signal to the station digital base 1. The fire detection equipment can be a fire alarm host, a fire detector or other equipment used to detect fire.

[0052] The dedicated monitoring module 3 communicates with the station digital base 1 in a two-way manner. When the station digital base 1 receives the first fire alarm signal sent by the fire detection device, the first fire alarm signal is forwarded to the dedicated monitoring module 3 .

[0053] The dedicated monitoring module 3 can also receive a second fire alarm signal manually triggered at the monitoring workstation 2: the dedicated monitoring module 3 is connected to the monitoring workstation 2 through the network of the station digital base 1, and the dedicated monitoring module 3 provides a station floor plan page, and the monitoring workstation 2 can call and display the station floor plan page through the network of the station digital base 1 to show it to the station duty personnel; the station duty personnel can click the fire alarm at the fire position on the station floor plan page through the monitoring workstation 2 to generate a second fire alarm signal, and the second fire alarm signal is sent to the dedicated monitoring module 3 through the network of the station digital base 1. After receiving the fire alarm signal, the dedicated monitoring module 3 caches the fire alarm signal and the corresponding fire alarm position, and updates the system status.

[0054] When the dedicated monitoring module 3 receives the first fire alarm signal or the second fire alarm signal, it calculates the first working mode of the PIS information screen 4, the second working mode of the exit indicator screen 5 and the third working mode of the controllable lighting strip 6 according to the fire location information and the station boundary conditions, and sends the calculated working mode to the station digital base 1. The specific calculation logic of the working mode will be explained in the subsequent method steps.

[0055] The station digital base 1 generates corresponding working mode instructions according to the received first working mode, second working mode and third working mode, and sends them to the corresponding evacuation guidance device to display corresponding information, specifically:

[0056] The station digital base 1 sends a first working mode instruction to the PIS information screen 4 according to the received first working mode. The PIS information screen 4 displays corresponding information to guide passengers to evacuate according to the first working mode instruction. In normal circumstances (no fire occurs), the PIS information screen 4 displays the riding service information, and in the event of a fire, the PIS information screen 4 displays the corresponding evacuation guidance information;

[0057] The station digital base 1 sends a second working mode instruction to the exit indicator screen 5 according to the received second working mode. The exit indicator screen 5 displays corresponding information according to the second working mode instruction to guide passengers to evacuate. In normal circumstances, the exit indicator screen 5 displays the station entrance and exit indication information, and in the event of a fire, the exit indicator screen 5 displays the corresponding evacuation exit indication information;

[0058] The station digital base 1 sends a third working mode instruction to the controllable lighting strip 6 according to the received third working mode. The controllable lighting strip 6 displays corresponding information according to the third working mode instruction to guide passengers to evacuate. In normal circumstances, the controllable lighting strip 6 executes the station lighting mode to assist the station lighting. In the event of a fire, the controllable lighting strip 6 displays corresponding light color image information.

[0059] Furthermore, the dedicated monitoring module 3 also monitors the PIS information screen 4, the exit indication screen 5 and the controllable lighting strip 6 in real time and provides a corresponding graphical monitoring page. The monitoring workstation 2 calls the monitoring page through the network of the station digital base 1 to monitor the working mode of the PIS information screen 4, the exit indication screen 5 and the controllable lighting strip 6 and the overall evacuation guidance effect of the station in real time.

[0060] The exit indicator screen 5 includes a communication-connected I-type LED control module and an I-type LED display module. The I-type LED control module is communication-connected with the station digital base 1, receives the second working mode instruction sent by the station digital base 1, and controls the I-type LED display module to display the corresponding indication mark. In this embodiment, the I-type LED control module uses the Internet of Things control module self-developed by Shanghai Qi'an, and the I-type LED control module uses the MQTT protocol to communicate with the station digital base 1; the I-type LED display module uses 16 pieces of 2mm dot pitch LED modules (Shenzhen Zhouming TB indoor series products) to form an 8×2 matrix display module.

[0061] The controllable lighting strip 6 includes a type II LED control module and a type II LED display module. The type II LED control module is connected to the station digital base 1 for communication, receives the third working mode command sent by the station digital base 1, and controls the type II LED display module to display the corresponding light color image. In this embodiment, the type II LED control module uses the Internet of Things control module developed by Shanghai Qi'an, and the type II LED control module uses the MQTT protocol to communicate with the station digital base; the type II LED display module uses 3 high-brightness LED modules with a dot pitch of 2.5mm (Shenzhen Zhouming TB outdoor series products) to form a 3×1 matrix display module.

[0062] The subway station emergency evacuation guidance system based on the digital base of this embodiment is based on existing equipment and planned equipment, and does not require additional funds for construction. It makes full use of the existing station electromechanical equipment and systems, which is conducive to cost control.

[0063] The embodiment of the present invention also proposes a subway station emergency evacuation guidance method based on a digital base, and the guidance method adopts the above-mentioned subway station emergency evacuation guidance system based on a digital base, such as Figure 2As shown, the specific steps include:

[0064] S1. Set up the PIS information screen 4, the exit indicator screen 5 and the controllable lighting strip 6, and record their physical locations;

[0065] Specifically, the PIS information screen 4 is set at the platform. At present, the PIS information screen 4 of the common subway station is mostly two PIS information screens 4 installed back to back as a group. Taking the six-car train platform as an example, six (i.e., three groups) of PIS information screens 4 need to be set. For a standard 138-meter platform, the interval between two adjacent groups of PIS information screens 4 is about 45 meters. It should be noted that in other embodiments, the specific setting position of the PIS information screen 4 can also be determined by professionals according to actual conditions, and this method does not impose too many restrictions on the setting position of the PIS information screen 4.

[0066] After determining the position of the PIS information screen 4, a number of the controllable lighting strips 6 are set based on the position of each PIS information screen 4, a number of the exit indicator screens 5 are set at each entrance and exit of the station, and the physical positions of the PIS information screen 4, the exit indicator screens 5 and the controllable lighting strips 6 are recorded in the dedicated monitoring module 3.

[0067] like Figure 3 As shown, the specific steps of setting a plurality of controllable lighting strips 6 based on the position of each PIS information screen 4 are as follows:

[0068] S11, calculating the installation position of the controllable lighting strip 6 in each end area in turn:

[0069] The terminal area refers to the area between the PIS information screen 4 at the terminal of the station and the boundary of the station public area at the terminal. Each station has two terminal areas. Figure 3 In the example, the area between the PIS information screen P1 and the boundary of the station public area is the terminal area.

[0070] Calculate the longitudinal distance D3 of the terminal area, where the longitudinal direction refers to the direction of train operation; then calculate the number X3 of controllable lighting strips 6 to be installed in the terminal area, where X3 is the integer quotient of the longitudinal distance D3 of the terminal area / the third threshold; arrange the installation position of the controllable lighting strips 6 according to the calculated number X3 of controllable lighting strips 6 in the terminal area, wherein the controllable lighting strips 6 are installed in the longitudinal lighting rack adjacent to the PIS information screen 4, and control the X3 controllable lighting strips 6 to be uniformly distributed longitudinally in the terminal area; wherein the third threshold is the threshold of the passenger visual distance, and in principle the third threshold does not exceed 15 meters; Figure 3 In the end area corresponding to the PIS information screen P1, a controllable lighting strip 6 is arranged at a distance a, so two controllable lighting strips 6 are provided, namely L1 and L2;

[0071] S12, calculating the installation position of the controllable lighting strip 6 in each middle area in turn:

[0072] The middle area refers to the area between two adjacent groups of PIS information screens 4. For a station with three groups of PIS information screens 4, there are two middle areas. Figure 3 In the figure, the middle area is between PIS information screens P1 and P2, and between P2 and P3.

[0073] Calculate the longitudinal distance D4 of the middle area; then calculate the number X4 of controllable lighting strips 6 to be set in the middle area, where X4 is the integer quotient of the longitudinal distance D4 of the middle area / the third threshold value; arrange the installation position of the controllable lighting strips 6 according to the calculated number X4 of controllable lighting strips 6 in the middle area, wherein the controllable lighting strips 6 are installed in the longitudinal lighting rack adjacent to the PIS information screen 4, and control the X4 controllable lighting strips 6 to be evenly distributed longitudinally in the middle area; Figure 3 In the middle area between the PIS information screens P1 and P2, a controllable lighting strip 6 is arranged at a distance b, so there are two controllable lighting strips 6, L3 and L4 respectively; in the middle area between the PIS information screens P2 and P3, a controllable lighting strip 6 is arranged at a distance c, so there are two controllable lighting strips 6, L5 and L6 respectively;

[0074] S13, installing the controllable lighting strip 6 according to the installation position of the controllable lighting strip 6 calculated in S11 and S12;

[0075] If a conventional lighting fixture already exists at the calculated installation position, the controllable lighting strip 6 is installed in a replacement manner.

[0076] S2. When the station digital base 1 receives the first fire alarm signal sent by the fire detection device, the first fire alarm signal and the fire location information corresponding to the first fire alarm signal are sent to the dedicated monitoring module 3;

[0077] Furthermore, the dedicated monitoring module 3 also receives a manually triggered second fire alarm signal and fire location information corresponding to the second fire alarm signal;

[0078] S3, the dedicated monitoring module 3 calculates the first working mode of the PIS information screen 4, the second working mode of the exit indicator screen 5 and the third working mode of the controllable lighting strip 6, specifically:

[0079] Under normal circumstances (no fire occurs), the dedicated monitoring module 3 sets the first working mode of the PIS information screen 4, the second working mode of the exit indicator screen 5, and the third working mode of the controllable lighting strip 6 to 0;

[0080] When receiving the first fire alarm signal or the second fire alarm signal, the dedicated monitoring module 3 uses the shortest path algorithm to calculate the optimal evacuation path according to the corresponding fire location information and station boundary conditions, and then determines the first working mode of each PIS information screen 4, the second working mode of each exit indicator screen 5 and the third working mode of each controllable lighting strip 6, specifically including the following steps:

[0081] S31, taking each PIS information screen 4, exit indicator screen 5 and controllable lighting strip 6 as an evacuation path node, calculating the distance between each node according to the physical position of each node, and constructing an adjacency matrix;

[0082] S32, calculate the straight-line distance D1 between each node and the fire location in turn and compare it with the first threshold and the second threshold. If D1 is less than or equal to the first threshold, the node is determined to be unavailable, and the distance between the node and the adjacent node is set to infinity; if D1 is greater than the first threshold and less than or equal to the second threshold, calculate the shortest distance D2 between the straight-line path formed by the node and the adjacent nodes and the fire location and compare it with the first threshold. If D2 is less than or equal to the first threshold, the path is determined to be unavailable, and the distance of the path is set to infinity.

[0083] In this embodiment, a plurality of fire detection devices are arranged at equal distances in the station, the first threshold is 60% of the distance between two adjacent fire detection devices, and the second threshold is 110% of the distance between two adjacent fire detection devices;

[0084] S33, using the Floyd optimal path algorithm to calculate the distance matrix and path matrix from each PIS information screen 4 and each controllable lighting strip 6 to each exit indicator screen 5, to form a shortest path set;

[0085] Among them, since there may be more than one evacuation exit when a fire occurs, in the Floyd optimal path algorithm, there is more than one evacuation path corresponding to each PIS information screen 4 and controllable lighting strip 6. Step S33 is to calculate the shortest distance from each PIS information screen 4 and controllable lighting strip 6 to each exit indicator screen 5 in turn.

[0086] The Floyd optimal path algorithm is also called the Floyd-Warshall algorithm, which is an algorithm for finding the shortest path between any two points in a graph. The algorithm is widely used in path optimization. Step S33 utilizes the existing Floyd optimal path algorithm, so the steps of the Floyd optimal path algorithm are not described in detail.

[0087] S34, according to the shortest path set, determine the optimal evacuation path, specifically: for each PIS information screen 4, compare the distances from the PIS information screen 4 to each exit indication screen 5 in the shortest path set, and select the exit indication screen 5 with the shortest distance, and use the path from the PIS information screen 4 to the exit indication screen 5 as the optimal evacuation path of the PIS information screen 4; for each controllable lighting strip 6, compare the distances from the controllable lighting strip 6 to each exit indication screen 5 in the shortest path set, and select the exit indication screen 5 with the shortest distance, and use the path from the controllable lighting strip 6 to the exit indication screen 5 as the optimal evacuation path of the controllable lighting strip 6;

[0088] S35, calculating the working modes of each PIS information screen 4, exit indicator screen 5 and controllable lighting strip 6, specifically comprising the steps of:

[0089] S351, calculating the second working mode of each exit indicator screen 5 in turn, specifically: setting the second working mode of the exit indicator screen 5 determined to be unavailable in step S32 to 99, and setting the second working mode of other exit indicator screens 5 to 1;

[0090] S352, calculate the first working mode of each PIS information screen 4 in turn, specifically: set the first working mode of the PIS information screen 4 determined to be unavailable in step S32 to 99; for each PIS information screen 4 that is not determined to be unavailable, determine the position of the exit indicator screen 5 in the optimal evacuation path corresponding to it, if the exit indicator screen 5 in the optimal evacuation path corresponding to the PIS information screen 4 is on the left side of the PIS information screen 4, then set the first working mode of the PIS information screen 4 to 2; if the exit indicator screen 5 in the optimal evacuation path corresponding to the PIS information screen 4 is on the right left side of the PIS information screen 4, then set the first working mode of the PIS information screen 4 to 3;

[0091] S353, calculating the third working mode of each controllable lighting strip 6 in turn, specifically: setting the third working mode of the controllable lighting strip 6 determined to be unavailable in step S32 to 99; for each controllable lighting strip 6 that is not determined to be unavailable, determining the position of the exit indicator screen 5 in the optimal evacuation path corresponding to it, if the exit indicator screen 5 in the optimal evacuation path corresponding to the controllable lighting strip 6 is on the left side of the controllable lighting strip 6, then setting the third working mode of the controllable lighting strip 6 to 2; if the exit indicator screen 5 in the optimal evacuation path corresponding to the controllable lighting strip 6 is on the right side of the controllable lighting strip 6, then setting the third working mode of the controllable lighting strip 6 to 3;

[0092] The order of steps S351, S352, and S353 is not specific;

[0093] S4, the dedicated monitoring module 3 sends the calculated working modes of each PIS information screen 4, exit indicator screen 5 and controllable lighting strip 6 to the station digital base 1, and the station digital base 1 sends the corresponding working mode instructions to each PIS information screen 4, exit indicator screen 5 and controllable lighting strip 6, so that it displays the corresponding evacuation guidance information;

[0094] Specifically, if the exit indication screen 5 receives the second working mode instruction set to 0, it will display the entrance and exit indication information under normal operation; if it receives the second working mode instruction set to 1, it will display the safety exit sign; if it receives the second working mode instruction set to 99, it will display the sign that the evacuation exit is dangerous and unavailable;

[0095] If the PIS information screen 4 receives the first working mode instruction set to 0, it displays the passenger service information under normal operation; if it receives the first working mode instruction set to 2, it displays the left evacuation sign and the station evacuation information; if it receives the first working mode instruction set to 3, it displays the right evacuation sign and the station evacuation information; if it receives the first working mode instruction set to 99, it displays the danger sign of the area;

[0096] If the controllable lighting strip 6 receives the third working mode instruction set to 0, the normal lighting mode of the station will be executed; if the controllable lighting strip 6 receives the third working mode instruction set to 2, the left evacuation sign will be displayed; if the controllable lighting strip 6 receives the third working mode instruction set to 3, the right evacuation sign will be displayed; if the controllable lighting strip 6 receives the third working mode instruction set to 99, the danger sign of this area will be displayed.

[0097] Furthermore, the above-mentioned subway station emergency evacuation guidance method based on the digital base also includes the steps after step S4: the dedicated monitoring module 3 monitors the PIS information screen 4, the exit indication screen 5 and the controllable lighting strip 6 in real time and provides a corresponding graphical monitoring page, and the monitoring workstation 2 calls the monitoring page through the network of the station digital base 1 to monitor the working mode of the PIS information screen 4, the exit indication screen 5 and the controllable lighting strip 6 and the overall evacuation guidance effect of the station in real time.

[0098] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the present invention. After reading the above content, it will be apparent to those skilled in the art that various modifications and substitutions of the present invention will occur. Therefore, the protection scope of the present invention should be limited by the appended claims.

Claims

1. A subway station emergency evacuation guidance system based on a digital base, characterized in that: include: A station digital base, a monitoring workstation, a dedicated monitoring module, several PIS information screens, several exit indicator screens and several controllable lighting strips; the station digital base is respectively connected to the dedicated monitoring module, each PIS information screen, each exit indicator screen and each controllable lighting strip; the monitoring workstation is connected to the dedicated monitoring module through the network of the station digital base; The dedicated monitoring module receives the first fire alarm signal sent by the station digital base or the second fire alarm signal sent by the monitoring workstation, and calculates the first working mode of the PIS information screen, the second working mode of the exit indication screen and the third working mode of the controllable lighting strip according to the fire location information corresponding to the first fire alarm signal or the second fire alarm signal and the station boundary conditions, and sends the calculated working mode to the station digital base; The station digital base generates corresponding first working mode instructions, second working mode instructions and third working mode instructions according to the received first working mode, second working mode and third working mode, and sends them to the PIS information screen, exit indication screen and controllable lighting strip to display the corresponding evacuation guidance information.

2. The subway station emergency evacuation guidance system based on the digital base according to claim 1, characterized in that: The station digital base also communicates with the fire detection device, receives the first fire alarm signal sent by the fire detection device, and sends it to the dedicated monitoring module; The dedicated monitoring module provides a station layout page, and the monitoring workstation calls and displays the station layout page through the network of the station digital base. The station duty personnel clicks on the fire alarm on the station layout page through the monitoring workstation to generate the second fire alarm signal, and the monitoring workstation sends the second fire alarm signal to the dedicated monitoring module through the network of the station digital base.

3. The subway station emergency evacuation guidance system based on the digital base according to claim 1, characterized in that: The dedicated monitoring module also monitors the PIS information screen, exit indication screen and controllable lighting strip in real time and provides corresponding graphical monitoring pages; the monitoring workstation calls the monitoring page through the network of the station digital base to monitor the working mode of the PIS information screen, exit indication screen and controllable lighting strip and the overall evacuation guidance effect of the station in real time.

4. The subway station emergency evacuation guidance system based on the digital base according to claim 1, characterized in that: The exit indication screen includes a type I LED control module and a type I LED display module that are communicatively connected, the type I LED control module is communicatively connected to the station digital base, receives the second working mode instruction sent by the station digital base, and controls the type I LED display module to display a corresponding indication mark; The controllable lighting strip includes a type II LED control module and a type II LED display module. The type II LED control module is communicatively connected with the station digital base, receives the third working mode instruction sent by the station digital base, and controls the type II LED display module to display the corresponding light color image.

5. A subway station emergency evacuation guidance method based on a digital base, using the subway station emergency evacuation guidance system based on a digital base as claimed in any one of claims 1 to 4, characterized in that: The following steps are involved: S1. Set up the PIS information screen, exit indicator screen and controllable lighting strip, and record their physical locations in the dedicated monitoring module; S2. When the station digital base receives a fire alarm signal, the fire alarm signal and the fire location information corresponding to the fire alarm signal are sent to the dedicated monitoring module; S3, the dedicated monitoring module calculates the first working mode of each PIS information screen, the second working mode of each exit indicator screen and the third working mode of each controllable lighting strip; S4. The dedicated monitoring module sends the calculated first working mode of each PIS information screen, the second working mode of each exit indication screen and the third working mode of each controllable lighting strip to the station digital base, and the station digital base sends the corresponding first working mode instructions, second working mode instructions and third working mode instructions to each PIS information screen, exit indication screen and controllable lighting strip, so that it displays the corresponding evacuation guidance information.

6. The subway station emergency evacuation guidance method based on a digital base as claimed in claim 5, characterized in that: In step S1, a plurality of controllable lighting strips are set based on the position of each PIS information screen, and a plurality of exit indicator screens are set at each entrance and exit of the station; wherein the specific steps of setting a plurality of controllable lighting strips based on the position of each PIS information screen include: S11, sequentially calculating the installation position of the controllable lighting strip in each terminal area of ​​the station: calculating the longitudinal distance D3 of the terminal area, and then calculating the number X3 of the controllable lighting strips to be set in the terminal area, X3 is the integer quotient of the longitudinal distance D3 of the terminal area / the third threshold, and then arranging the installation position of the controllable lighting strip according to the calculated number X3 of the controllable lighting strips in the terminal area; wherein the third threshold is the threshold of the passenger visual distance; S12, sequentially calculating the installation position of the controllable lighting strip in each middle area of ​​the station: calculating the longitudinal distance of the middle area, and then calculating the number X4 of controllable lighting strips to be set in the middle area, where X4 is the integer quotient of the longitudinal distance D4 of the middle area / the third threshold value, and then arranging the installation position of the controllable lighting strip according to the calculated number X4 of controllable lighting strips in the middle area; S13. Install the controllable lighting strip according to the installation position of the controllable lighting strip calculated in S11 and S12.

7. The subway station emergency evacuation guidance method based on a digital base as claimed in claim 5, characterized in that: Step S3 is specifically as follows: Under normal circumstances, the dedicated monitoring module sets the first working mode of the PIS information screen, the second working mode of the exit indicator screen, and the third working mode of the controllable lighting strip to 0; When a fire alarm signal is received, the dedicated monitoring module uses the shortest path algorithm to calculate the optimal evacuation path based on the corresponding fire location information and station boundary conditions, and then determines the first working mode of each PIS information screen, the second working mode of each exit indicator screen, and the third working mode of each controllable lighting strip.

8. The subway station emergency evacuation guidance method based on a digital base as claimed in claim 7, characterized in that: Upon receiving a fire alarm signal, the dedicated monitoring module calculates the working mode comprising: S31, taking each PIS information screen, exit indicator screen and controllable lighting strip as an evacuation path node, calculating the distance between each node according to the physical position of each node, and constructing an adjacency matrix; S32, sequentially calculating the straight-line distance D1 between each node and the fire location and comparing it with the first threshold and the second threshold; if D1 is less than or equal to the first threshold, the node is determined to be unavailable, and the distance between the node and the adjacent node is set to infinity; if D1 is greater than the first threshold and less than or equal to the second threshold, the shortest distance D2 between the straight-line path formed by the node and the adjacent nodes and the fire location is calculated and compared with the first threshold; if D2 is less than or equal to the first threshold, the path is determined to be unavailable, and the distance of the path is set to infinity; S33, using an optimal path algorithm to calculate the distance matrix and path matrix from each PIS information screen and each controllable lighting strip to each exit indicator screen to form a shortest path set; S34, determining the optimal evacuation path according to the shortest path set, specifically: for each PIS The information screen and each controllable lighting strip are compared with the distance from the PIS information screen or the controllable lighting strip to each exit indicator screen in the shortest path set, and the exit indicator screen with the shortest distance is selected, and the path from the PIS information screen or the controllable lighting strip to the exit indicator screen is used as the optimal evacuation path of the PIS information screen or the controllable lighting strip; S35, calculating the first working mode of each PIS information screen, the second working mode of each exit indicator screen, and the third working mode of each controllable lighting strip.

9. The subway station emergency evacuation guidance method based on a digital base as claimed in claim 8, characterized in that: In step S35, the calculation step of the second working mode of the exit indicator screen is specifically as follows: setting the second working mode of the exit indicator screen determined to be unavailable in step S32 to 99, and setting the second working mode of other exit indicator screens to 1; The calculation steps of the first working mode of the PIS information screen are specifically as follows: the first working mode of the PIS information screen determined to be unavailable in step S32 is set to 99; for each PIS information screen that is not determined to be unavailable, the position of the exit indicator screen in the optimal evacuation path corresponding to the PIS information screen is determined; if the exit indicator screen in the optimal evacuation path corresponding to the PIS information screen is on the left side of the PIS information screen, the first working mode of the PIS information screen is set to 2; if the exit indicator screen in the optimal evacuation path corresponding to the PIS information screen is on the right side of the PIS information screen, the first working mode of the PIS information screen is set to 3; The calculation steps of the third working mode of the controllable lighting strip are specifically as follows: setting the third working mode of the controllable lighting strip determined to be unavailable in step S32 to 99; for each controllable lighting strip that is not determined to be unavailable, determining the position of the exit indicator screen in the optimal evacuation path corresponding to the controllable lighting strip; if the exit indicator screen in the optimal evacuation path corresponding to the controllable lighting strip is on the left side of the controllable lighting strip, setting the third working mode of the controllable lighting strip to 2; if the exit indicator screen in the optimal evacuation path corresponding to the controllable lighting strip is on the right side of the controllable lighting strip, setting the third working mode of the controllable lighting strip to 3.

10. The subway station emergency evacuation guidance method based on a digital base as claimed in claim 9, characterized in that: In step S4, each of the PIS information screens, exit indicator screens and controllable lighting strips displays corresponding evacuation guidance information according to the working mode instructions, specifically: If the exit indication screen receives the second working mode instruction set to 0, it will display the entrance and exit indication information under normal operation; if it receives the second working mode instruction set to 1, it will display the safety exit sign; If the second working mode instruction set to 99 is received, the evacuation exit is displayed as unavailable. If the PIS information screen receives the first working mode instruction set to 0, the boarding service information under normal operation is displayed. If the first working mode instruction set to 2 is received, the left evacuation sign and station evacuation information are displayed. If the first working mode command set to 3 is received, the right evacuation sign and station evacuation information are displayed; If the first working mode command set to 99 is received, the danger mark of this area will be displayed; If the controllable lighting strip receives the third working mode command set to 0, the normal lighting mode of the station is executed; If the third working mode command is set to 2, the left evacuation sign is displayed; if the third working mode command is set to 3, the right evacuation sign is displayed; if the third working mode command is set to 99, the danger sign for this area is displayed.

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