Waiting guide system applied to rail transit

Abstract

The utility model relates to the technical field of rail transit, in particular to a waiting guide system applied to rail transit, which comprises a plurality of waiting guide terminals in communication connection with a PSC end of a platform door system. The waiting guide terminal comprises a central processing unit, a power supply input unit, a DC5V power supply unit, a trigger signal communication unit, an RJ45 signal communication unit and an LED driving unit. The power supply input unit is electrically connected with the central processing unit, the DC5V power supply unit and the LED driving unit. And the DC5V power supply unit, the trigger signal communication unit, the RJ45 signal communication unit and the LED driving unit are respectively in communication connection with the central processing unit. According to the technical scheme, the problem that the number of display terminals is limited in the prior art is solved, meanwhile, convenience is provided for data updating and maintenance of the waiting guide terminal, and the method has great significance in achieving real-time, diversified and accurate display of station service information.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transit, in particular to a waiting guidance system applied to rail transit. Background Art

[0002] With the rapid development of society, the exchanges between cities are becoming increasingly frequent. In order to shorten the travel time of people between cities, China has carried out large-scale high-speed railway construction and put it into operation. How to enable passengers to wait for trains accurately and orderly is an important symbol to improve the service level of high-speed railways.

[0003] At present, China's high-speed railways have the characteristics of many types of train models, and the number and positions of the doors of each train model are not completely the same. When waiting for trains on high-speed railway platforms, platform ground markings and station staff guidance are mainly used. There are many types of current ground markings, such as white characters on a blue background, black characters on a yellow background, white characters on a red background, etc., but the reminder effect is not obvious, and they cannot be recognized from a distance, which brings inconvenience to passengers waiting for trains, and then leads to inefficient boarding. Therefore, waiting guidance systems have been set up in some areas of the prior art, but the existing waiting guidance systems are generally several groups of display devices, which are installed in the passenger waiting area according to a certain distance using Scheme A or Scheme B as shown in Figure 2 There are defects in that the number of display terminals is limited and the in-station information that can be provided to passengers is less.

[0004] In this regard, the waiting guidance system in the prior art, such as the Chinese utility model patent document with the publication number CN207268895U, discloses a high-speed railway platform waiting guidance system including a main control component, a control circuit and a plurality of display screens. The main control component is electrically connected to the control circuit, and the train model information of the train to arrive is pre-stored therein; the main control component is also used to receive the ticket checking action command of the ticket checking gate, and the high-speed railway platform waiting system starts to work triggered by the ticket checking action command; the plurality of display screens are respectively electrically connected to the control circuit, and the main control component is also used to send a display instruction to the corresponding display screen according to the pre-stored train model information of the train to arrive, and the display screen is used to display waiting information according to the received display instruction. The high-speed railway platform waiting system displays the train number and carriage number through the display screen, and the brightness of the display screen is relatively high, and the reminder effect is good, which is convenient for passengers to view from a distance. However, this prior art still has the following defects: all the displays are controlled by one control component, and the data update and maintenance are complex and lack real-time interactivity. Summary of the Utility Model

[0005] The purpose of the utility model is to propose a waiting guidance system applied to rail transit in view of the deficiencies of the above-mentioned prior art.

[0006] The utility model is realized by adopting the following technical solutions:

[0007] A waiting guidance system applied to rail transit includes several waiting guidance terminals respectively communicating and connecting with the PSC end of the platform door system. The waiting guidance terminal includes a central processor, a power supply input unit, a DC5V power supply unit, a trigger signal communication unit, an RJ45 signal communication unit, and an LED driving unit. The power supply input unit is electrically connected to the central processor, the DC5V power supply unit, and the LED driving unit respectively for accessing an external power supply. The DC5V power supply unit is connected to an LED display screen and provides a working power supply for the LED display screen; the central processor is communicatively connected to the DC5V power supply unit for detecting a voltage signal in the DC5V power supply unit. The trigger signal communication unit is communicatively connected to the central processor for obtaining a platform screen door activity status signal and sending it to the central processor. The RJ45 signal communication unit is communicatively connected to the central processor for obtaining station service information of the PSC end and sending it to the central processor, and providing a channel for external devices to perform parameter configuration, data update, and device maintenance on the waiting guidance terminal. The LED driving unit is communicatively connected to the central processor for cooperating with the central processor to control the display content of the LED screen, and the display content includes the platform screen door activity status and station service information.

[0008] Preferably, the power supply input unit includes a DC24V input interface, a protection / filter module, a DCDC5V conversion circuit, and an LDO3.3V conversion circuit that are electrically connected in sequence; wherein, the DCDC5V conversion circuit is electrically connected to the DC5V power supply unit, and the LDO3.3V conversion circuit is electrically connected to the central processor and the LED driving unit respectively.

[0009] Preferably, the DC5V power supply unit includes a DC5V output interface and a current limiting / control module; the DC5V output interface is communicatively connected to the central processor through the current limiting / control module, and the power supply input unit is electrically connected to the current limiting / control module.

[0010] Preferably, the trigger signal communication unit includes a trigger signal interface and an isolation circuit module; the trigger signal interface is communicatively connected to the central processor through the isolation circuit module.

[0011] Preferably, the RJ45 signal communication unit includes an RJ45 interface and a network driving circuit; the RJ45 interface is communicatively connected to the central processor through the network driving circuit.

[0012] Preferably, the LED driving unit includes an LED driving interface and an IOBUFFER buffer circuit; the power supply input unit is electrically connected to the IOBUFFER buffer circuit, and the LED driving interface is communicatively connected to the central processor through the IOBUFFER buffer circuit.

[0013] Preferably, it further includes a font library module, and the font library module is communicatively connected to the central processing unit.

[0014] The beneficial technical effects brought by the present utility model:

[0015] 1) A waiting area guiding system disclosed by the present technical solution includes a number of waiting area guiding terminals, which support establishing communication with the PSC end of the platform screen door system and other management devices, facilitating adaptively increasing or decreasing the number of waiting area guiding terminals and LED display screens according to the number of platform screen doors, solving the problem of limited number of display terminals in the prior art, and at the same time providing convenience for data update and maintenance of the waiting area guiding terminals. In addition, the waiting area guiding terminals of the present technical solution have a specific corresponding relationship with the nearby platform screen doors, supporting directly indicating the movement state of the corresponding platform screen door body, and accurately and intuitively displaying station service information such as corresponding train types and carriages for a single platform screen door according to the position of the platform screen door, which is of great significance for realizing real-time, diverse and accurate display of station service information.

[0016] 2) The present technical solution supports real-time interaction with external devices / systems such as the PSC (central control panel) end through network communication to provide passengers with real-time in-station information; in addition, the present technical solution is convenient for configuration update and maintenance of display data content, and can adjust the display information as needed to solve the problem of less in-station information provided to passengers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a block diagram of the composition principle of the waiting area guiding terminal;

[0018] Figure 2 It is a schematic diagram of the installation structure of the display device of the waiting area guiding system;

[0019] Figure 3 It is a schematic diagram of a preferred layout and installation structure of the waiting area guiding system of the present technical solution. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] To make the objectives, technical solutions and advantages of the utility model clearer, the technical solutions in the utility model will be clearly and completely described below with reference to the accompanying drawings in the utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the utility model.

[0021] Therefore, the detailed description of the utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the utility model without creative efforts fall within the scope of protection of the utility model.

[0022] Embodiment 1

[0023] This embodiment discloses a waiting guidance system applied to rail transit (hereinafter referred to as the waiting guidance system). As a basic implementation scheme of the present utility model, it includes a number of waiting guidance terminals respectively communicatively connected to the PSC end of the platform door system. The waiting guidance terminal includes a central processing unit, a power supply input unit, a DC5V power supply unit, a trigger signal communication unit, an RJ45 signal communication unit, and an LED driving unit.

[0024] The power supply input unit is electrically connected to the central processing unit, the DC5V power supply unit, and the LED driving unit respectively, and is used to access an external power supply.

[0025] The DC5V power supply unit is connected to the LED display screen and provides a working power supply for the LED display screen; the central processing unit is communicatively connected to the DC5V power supply unit and is used to detect the voltage signal in the DC5V power supply unit.

[0026] The trigger signal communication unit is communicatively connected to the central processing unit and is used to obtain the platform door activity status signal and send it to the central processing unit.

[0027] The RJ45 signal communication unit is communicatively connected to the central processing unit and is used to obtain the station service information of the PSC end and send it to the central processing unit, and provide a channel for external devices to configure parameters, update data, and maintain the waiting guidance terminal.

[0028] The LED driving unit is communicatively connected to the central processing unit and is used to cooperate with the central processing unit to control the display content of the LED screen. The display content includes the platform door activity status and the station service information.

[0029] Based on the composition structure of the above waiting guidance system, in actual use, the waiting guidance terminals and LED display screens are installed corresponding to the number and position of the platform door groups on the platform site one by one. For example Figure 3As shown in the figure, the waiting guidance terminal and the LED display screen can be embedded in the top box above the corresponding shield door group. For each single shield door, the control terminal of the shield door is communicatively connected to the central processor through the trigger signal communication unit; the DC 5V power supply unit is electrically connected to the LED display screen; the LED display screen is communicatively connected to the central processor through the LED drive unit; the trigger signal communication unit is communicatively connected to the DCU controller (Door Control Unit, platform unit door controller, hereinafter referred to as the DCU controller); then, through the RJ45 signal communication unit, a protocol communication is established between the central processor and the PSC (central control panel) end or other management devices. Among them, in the prior art, the PSC (central control panel) end is a part of the PSD system (platform screen door system), and can obtain station service information, including train model and number information, operation time information, station prompts and warnings, etc. Other management devices such as programmable industrial computers are used to interact with the central processor to configure / maintain data through the RJ45 signal communication unit. The DCU controller is a part of the PSD system (platform screen door system), and provides the DCU controller signal (i.e., the trigger signal) for the trigger signal communication unit in this technical solution.

[0030] Based on the above installation structure, the working principle of this technical solution is as follows: The external power supply is accessed through the power supply input unit, and the power supply input unit converts the external power supply into working power supplies respectively leading to the central processor, the DC 5V power supply unit, and the LED drive unit. In this way, when the waiting guidance terminal is started, this technical solution supplies power to the LED display screen through the DC 5V power supply unit. After the PSC (central control panel) end obtains the station service information, based on the protocol communication (such as network protocols like TCP / IP or UDP) established with the trigger signal communication unit, the station service information is sent to the central processor. After the central processor processes the station service information, it controls the LED display screen to display through the LED drive unit.

[0031] In this technical solution, the waiting guidance terminal is only used as a terminal device. The content displayed on the LED display screen driven by this terminal device is sent from the PSC (central control panel) end to this terminal device, and this terminal device is responsible for displaying the content sent from the PSC (central control panel) end on the LED display screen according to the correct driving timing. The PSC (central control panel) end calculates the location of this device based on the installation location of the waiting guidance terminal in this technical solution (the device installation location has been saved in the waiting guidance terminal device as device attribute information during the debugging of the waiting guidance terminal device), combined with the corresponding station service information. Specifically: the station service information contains train model data. Based on the installation location of the waiting guidance terminal and the train model data, the car body number of the arriving train at the current waiting guidance terminal can be obtained, and based on this, the station service information is sent to the corresponding waiting guidance terminal for display.

[0032] In summary, a waiting guidance system disclosed by this technical solution includes several waiting guidance terminals. First, by setting an RJ45 signal communication unit in the waiting guidance terminal, it supports establishing communication with the PSC (Central Control Panel) end of the platform screen door system and other management devices, facilitating the adaptive increase or decrease of the number of waiting guidance terminals and LED display screens according to the number of screen doors, solving the problem of limited number of display terminals in the prior art, and at the same time providing convenience for data update and maintenance of the waiting guidance terminal. In addition, the waiting guidance terminal of this technical solution has a specific corresponding relationship with the nearby screen door, that is, uniqueness, and supports directly indicating the movement state of the corresponding screen door body. According to the position of the screen door, it accurately and intuitively displays station service information such as the corresponding train type and carriage for a single screen door.

[0033] Embodiment 2

[0034] This embodiment discloses a waiting guidance system applied to rail transit. As a basic implementation scheme of the present utility model, that is, based on Embodiment 1, its power supply input unit includes a DC24V input interface, a protection / filter module, a DCDC5V conversion circuit, and an LDO3.3V conversion circuit that are electrically connected in sequence; wherein, the DCDC5V conversion circuit is electrically connected to the DC5V power supply unit, and the LDO3.3V conversion circuit is electrically connected to the central controller and the LED driving unit respectively.

[0035] Based on the composition structure of the above power supply input unit, external 24V direct current is accessed through the DC24V input interface and enters the DCDC5V conversion circuit after passing through the protection / filter module. During this period, the protection / filter module plays the roles of overcurrent protection, reverse connection protection, surge and electrostatic protection, and power supply filtering. The DCDC5V conversion circuit converts 24V direct current into 5V direct current and inputs 5V direct current to the DC5V power supply unit and the LDO3.3V conversion circuit respectively. Among them, the 5V direct current input to the DC5V power supply unit is used to provide a working power supply for the LED display screen. The LDO3.3V conversion circuit (low dropout linear voltage regulator circuit) converts 5V direct current into 3.3V direct current and inputs 3.3V working power supply to the central processor and the LED driving unit respectively.

[0036] Embodiment 3

[0037] This embodiment discloses a waiting guidance system applied to rail transit. As a basic implementation scheme of the present utility model, that is, based on Embodiment 1 or 2, its DC5V power supply unit includes a DC5V output interface and a current limiting / control module; the DC5V output interface is communicatively connected to the central processor through the current limiting / control module, and the power supply input unit is electrically connected to the current limiting / control module.

[0038] Among them, the current limiting / control module adopts a hardware-structured current limiting control scheme, that is, a self-resetting fuse based on specified parameters. When an overcurrent of 5V occurs between the DC5V output interface and the LED screen interface terminal, the current limiting / control module automatically performs power-off protection. During this period, the central processor continuously detects the DC5V voltage input by the power supply input unit (specifically, the DCDC5V conversion circuit) to the DC5V power supply unit (specifically, the current limiting / control module), monitors this DC5V voltage, and when it detects that the DC5V voltage drop caused by the LED display load is too large, it will reduce the power of the LED display through the LED driving unit.

[0039] Embodiment 4

[0040] This embodiment discloses a waiting area guiding system applied to rail transit. As a basic implementation scheme of the present utility model, that is, based on Embodiment 1, 2 or 3, its trigger signal communication unit includes a trigger signal interface and an isolation circuit module; the trigger signal interface is communicatively connected to the central processor through the isolation circuit module.

[0041] Among them, the trigger signal specifically refers to the DCU controller signal, that is, the acoustic and optical control signal output by the DCU controller in the PSD system, and this acoustic and optical control signal is a high / low signal of DC24V or DC0V. When the trigger signal is input into the central controller through the trigger signal interface via the isolation circuit module, the LED display screen is controlled by the LED driving unit to perform a flashing alarm. During the alarm, there is a corresponding interface interaction in the LED display screen, and the specific interaction form is selected by the user according to needs. For example: it can flash with a certain color fixed on the full screen, or a fixed border flashes around the LED display screen, and these are all implemented based on software. The corresponding states of the screen door body during the alarm mainly involve the closed state, the opening state, the fully opened state, and the anti-pinch state, etc., and these states can all be reflected by the display color or whether it flashes on the LED screen.

[0042] During this process, the isolation circuit module is designed based on an optocoupler structure to establish signal isolation between the trigger signal of the DCU controller and the waiting area guiding terminal, improving the anti-interference ability of this technical solution. In addition, the central processor continuously detects the output signal after the optocoupler (isolation circuit module), decodes this signal to identify the corresponding state of the screen door body, and drives the corresponding LED display screen to display the state / data through the LED driving unit.

[0043] Embodiment 5

[0044] This embodiment discloses a waiting guidance system applied to rail transit. As a basic implementation scheme of the present utility model, that is, based on Embodiment 1, 2, 3 or 4, its RJ45 signal communication unit includes an RJ45 interface and a network drive circuit; the RJ45 interface is communicatively connected to the central processor through the network drive circuit.

[0045] Among them, the RJ45 interface is used to connect to the PSC (central control panel) end or other management devices. The network drive circuit is the same as a network driver. The main function of the network driver is to map the shared directory in the local area network to the local drive letter, which is convenient for users to access the shared resources on the network. In this technical solution, the network drive circuit is used to implement TCP / IP or UDP communication with the PSC (central control panel) end or other management devices. Based on this, it supports the waiting guidance terminal to establish communication with a variety of external devices.

[0046] When the waiting guidance terminal is running normally, it uses the RJ45 interface to communicate with the PSC (central control panel) end or other devices / systems that can obtain station service information, and after obtaining the station service information and necessary information processing, it is sent to the LED display screen through the LED drive unit for display. Based on this, the PSC (central control panel) end sends station service information to the waiting guidance terminals at different positions respectively, so that station service information such as train type and number, current waiting carriage, carriage congestion level, and carriage air-conditioning cooling and heating can be accurately displayed for the corresponding trains. Therefore, the station service information has the characteristics of being real-time, diverse, and accurate. When system configuration and data maintenance are required, the RJ45 interface is used to communicate with an editable industrial computer or other devices / systems that can obtain configuration / maintenance data. In this way, the configuration update and data maintenance of the waiting guidance terminal can be easily realized with the help of external devices.

[0047] In summary, this technical solution supports real-time interaction with external devices / systems such as the PSC (central control panel) end through network communication to provide passengers with real-time in-station information; in addition, this technical solution is convenient for configuration update and display data content maintenance, and the display information can be adjusted according to needs to solve the problem of less in-station information provided to passengers.

[0048] Embodiment 6

[0049] This embodiment discloses a waiting guidance system applied to rail transit. As a basic implementation scheme of the present utility model, that is, based on Embodiment 1, 2, 3, 4 or 5, its LED drive unit includes an LED drive interface and an IOBUFFER buffer circuit; the power supply input unit is electrically connected to the IOBUFFER buffer circuit, and the LED drive interface is communicatively connected to the central processor through the IOBUFFER buffer circuit.

[0050] In practical applications, the LED display screen is connected to the waiting guidance terminal through the LED driving interface. During the operation of the waiting guidance terminal, the IOBUFFER buffer circuit effectively isolates the central processor and the LED screen driving interface, thereby protecting the internal related circuits of the waiting guidance terminal and further improving the anti-interference ability of the technical solution.

[0051] Embodiment 7

[0052] This embodiment discloses a waiting guidance system applied to rail transit. As a basic implementation scheme of the present invention, that is, based on Embodiments 1, 2, 3, 4, 5 or 7, it further includes a font library module, and the font library module is communicatively connected to the central processor.

[0053] Among them, the font library module is a font library chip, which contains LED dot matrix data of each font attribute inside and is used to retrieve the LED dot matrix data when the LED dot matrix screen displays a specified font size.

[0054] Based on this, in the technical solution, after the central processor of the waiting guidance terminal receives the corresponding data signal through the trigger signal communication unit and the RJ45 signal communication unit, it adapts the corresponding font and font size coding content from the font library module, and then through the correct driving timing, sends the corresponding coding content to the LED display screen through the LED driving unit, so as to realize the display of the waiting guidance information.

Claims

1. A waiting guidance system for rail transit, characterized in that: It includes a plurality of waiting guidance terminals respectively connected to the PSC end of the platform door system for communication, and the waiting guidance terminal includes a central processor, a power supply input unit, a DC5V power supply unit, a trigger signal communication unit, an RJ45 signal communication unit and an LED driving unit; The power supply input unit is electrically connected to the central processing unit, the DC5V power supply unit and the LED driving unit respectively, and is used to access an external power supply; The DC5V power supply unit is connected to the LED display screen and provides working power for the LED display screen; the central processing unit is connected to the DC5V power supply unit for communication and is used to detect the voltage signal in the DC5V power supply unit; The trigger signal communication unit is connected to the central processor for obtaining the activity state signal of the shielding door and sending it to the central processor; The RJ45 signal communication unit is connected to the central processor for obtaining the station service information of the PSC terminal and sending it to the central processor, and providing a channel for external devices to perform parameter configuration, data update and equipment maintenance on the waiting guidance terminal; The LED driving unit is in communication connection with the central processing unit and is used to cooperate with the central processing unit to control the display content of the LED screen, and the display content includes the activity status of the platform screen door and the station service information.

2. A waiting guidance system for rail transit as claimed in claim 1, characterized in that: The power supply input unit includes a DC24V input interface, a protection / filtering module, a DCDC5V conversion circuit and an LDO3.3V conversion circuit which are electrically connected in sequence; wherein the DCDC5V conversion circuit is electrically connected to the DC5V power supply unit, and the LDO3.3V conversion circuit is electrically connected to the central processing unit and the LED driving unit respectively.

3. A waiting guidance system for rail transit as claimed in claim 1, characterized in that: The DC5V power supply unit includes a DC5V output interface and a current limiting / control module; the DC5V output interface is communicatively connected to the central processing unit through the current limiting / control module, and the power supply input unit is electrically connected to the current limiting / control module.

4. A waiting guidance system for rail transit as claimed in claim 1, characterized in that: The trigger signal communication unit includes a trigger signal interface and an isolation circuit module; the trigger signal interface is communicatively connected with the central processing unit via the isolation circuit module.

5. The waiting guidance system for rail transit as claimed in claim 1, characterized in that: The RJ45 signal communication unit includes an RJ45 interface and a network drive circuit; the RJ45 interface is communicatively connected with the central processing unit via the network drive circuit.

6. A waiting guidance system for rail transit as claimed in claim 1, characterized in that: The LED driving unit comprises an LED driving interface and an IO BUFFER buffer circuit; the power supply input unit is electrically connected to the IO BUFFER buffer circuit, and the LED driving interface is communicatively connected to the central processing unit via the IO BUFFER buffer circuit.

7. A waiting guidance system for rail transit as claimed in claim 1, characterized in that: It also includes a character library module, and the character library module is communicatively connected with the central processing unit.

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