Control system for a platform lift barrier

Abstract

The utility model provides a kind of control system of platform lifting guardrail, comprising: control cabinet, control module is equipped in control cabinet;Control module is connected by cable two in the relay assembly and remote control receiver that are set in control cabinet;Driving mechanism is connected relay assembly by cable in the setting of platform lifting column, control module, relay assembly and remote control receiver are all connected power supply by cable one, the utility model is used to solve the local area network of existing platform lifting guardrail control system drop line cannot send command in time;Cause travel service signal sporadic delay;Further cause the real-time performance and accuracy of guardrail lifting system control are influenced by the problem such as communication anomaly caused by interference.

Description

Technical Field

[0001] This utility model relates to the field of platform safety protection and control technology, and in particular to a control system for a platform lifting guardrail. Background Technology

[0002] A train platform generally refers to a platform parallel to the train door steps that facilitates passengers boarding the train after entering the train station. Existing train platforms are all open and do not have shielding or protection. Therefore, during daily use, platform staff need to pay attention to passengers and items crossing the safety line at all times to ensure the normal operation of trains and platforms and avoid accidents.

[0003] Based on the above-mentioned technical problems, the existing Chinese patent CN202421180107.4 discloses a platform liftable protective net device, the purpose of which is to achieve the purpose of platform protection and shielding through the liftable protective net, so as to prevent people from crossing the safety line and approaching the track area before the train has come to a complete stop.

[0004] In actual use, when the train arrives at the station, stops and the doors open, the safety net needs to be raised and lowered within the allowable time difference between the train and the doors to ensure that passengers can get on and off the train within an effective and limited time.

[0005] Specifically, the safety railings at the train platform are arranged longitudinally along the platform (approximately 500 meters long) and are generally divided into 20+ units. Each unit consists of platform bollards that can be raised and lowered independently. The entire railing system is controlled by a control cabinet on the platform, which consists of a PC and a UPS. The PC and all the platform bollards form a local area network, enabling them to communicate with each other.

[0006] Current control method: The PC receives passenger service signals in real time (i.e., train service signals, which generally include passenger vehicle originating station, train number, departure time, carriage number, total number of carriages, etc., and the total number of carriages includes at least short formations and multiple-unit trains). When the train enters the station, the system automatically identifies or raises / lowers the corresponding guardrail unit after receiving a signal from the staff; if the train is a short formation (8 carriages), the system raises / lowers the left or right half of the guardrail based on the passenger service signal content (determining whether it is an up or down line); if the train is a multiple-unit train (16 carriages in a long formation), the system raises / lowers all guardrails.

[0007] The actual scenario for the use of the guardrail: The guardrail has 20 units, each approximately 23 meters long; there are two types of trains: coupled trains and short trains. When the coupled trains are stopped, the 20 units are controlled to rise and fall; when the short trains are stopped on the up line, units 1-11 are controlled to rise and fall; when the short trains are stopped on the down line, units 11-20 are controlled to rise and fall.

[0008] The existing method has the following drawbacks: local area network outages prevent timely command transmission; occasional delays in passenger service signals; and communication anomalies caused by interference affect the real-time performance and accuracy of the guardrail lifting system. Therefore, a new control system solution is needed to address these technical problems. Utility Model Content

[0009] This utility model provides a control system for platform lifting guardrails, which solves the problems of existing platform lifting guardrail control systems, such as local area network outages preventing timely command transmission, occasional delays in passenger service signals, and communication anomalies caused by interference, which affect the real-time performance and accuracy of the guardrail lifting system control.

[0010] This utility model provides a control system for a platform lifting guardrail.

[0011] Includes: a control cabinet, which contains a control module; the control module is connected to a relay assembly and a remote control receiver located inside the control cabinet via cable 2;

[0012] The drive mechanism inside the platform lifting bollard is connected to the relay assembly via a control cable. The control module, relay assembly, and remote control receiver are all connected to the power supply via cable one; the platform lifting bollard is connected to the power supply via a cable.

[0013] Preferably, the relay assembly is an intermediate relay, and the control module is connected to the intermediate relay via cable two; the intermediate relay is connected to the drive mechanism of the lifting column of each station platform via control cable.

[0014] A control system for a platform lifting guardrail, wherein relay components and control modules are arranged in groups, and the control cabinet includes one or more groups.

[0015] Preferably, the power supply is AC power and / or a UPS module;

[0016] When the mains power is used, the control cabinet is equipped with terminal blocks. The input end of the terminal block is connected to the mains power output end, and the output end of the terminal block is connected to the control module, relay assembly and remote control receiver respectively through wires.

[0017] When it is a UPS module, the input terminal of the UPS module is connected to the mains power, and the output terminal is connected to the control module, relay assembly and remote control receiver through wires.

[0018] Preferably, when it is a UPS module, it further includes a switching power supply at the output end of the UPS module, the other end of the switching power supply being electrically connected to the control module, and the output end of the control module being electrically connected to a relay assembly, and used to supply power to the control module through the UPS module.

[0019] Preferably, the relay assembly includes: a relay isolation transformer, the input of which is electrically connected to the output of the UPS module, and the output of which is connected to a relay coil; the output of the relay coil is engaged or disengaged from the relay contacts via a contact group.

[0020] Preferably, the input terminal of the relay coil is electrically connected to the controller, and the contact group consists of one and / or more contacts that engage or disengage with the relay contact terminal.

[0021] Preferably, the driving mechanism of the platform lifting bollard is a motor, with the input end of the motor connected to the relay contact end and the output end connected to the lifting structure.

[0022] Preferably, the control cabinet is located on one side of the platform lifting column, and the bottom of the control cabinet is fixed by a ground bolt.

[0023] Preferably, it also includes a handheld wireless remote control, which communicates wirelessly with the remote control receiver;

[0024] The touch screen is installed on the side wall of the platform lifting column or control cabinet. The power input terminal of the touch screen is connected to the mains power or UPS module, and the signal control terminal of the touch screen is electrically connected to the control module.

[0025] The working principle and beneficial effects of this utility model are as follows:

[0026] This utility model provides a control system for a platform lifting guardrail, comprising: a control cabinet containing a control module; the control module being connected to a relay assembly and a remote control receiver housed within the control cabinet via a second cable; a drive mechanism housed within the platform lifting column being connected to the relay assembly via a cable; and the control module, relay assembly, and remote control receiver being connected to a power source via a first cable. This utility model provides a control system for a platform lifting guardrail to solve the problems of existing platform lifting guardrail control systems, such as local area network outages preventing timely command transmission; occasional delays in passenger service signals; and communication anomalies caused by interference, all of which affect the real-time performance and accuracy of the guardrail lifting system control.

[0027] Specifically, the control system of traditional platform lifting guardrails uses a local area network to control the raising and lowering of the guardrails. However, in actual use, signal delays or interference can disrupt the normal control and use of the guardrails (platform lifting bollards). This invention, by adding a cable control system, enables the direct transmission of the raising and lowering signals of the platform lifting bollards, avoiding signal delays or disconnections caused by abnormal local area network communication, and thus preventing the platform lifting bollards (guardrails) from failing to rise and fall normally.

[0028] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings.

[0029] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0030] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0031] Figure 1 This is a schematic diagram of the system structure of this utility model;

[0032] Figure 2 This is a schematic diagram of the control cabinet connection structure of this utility model;

[0033] Figure 3 This is a schematic diagram of the control cabinet connection structure of this utility model;

[0034] Figure 4 This is a schematic diagram of the system principle of this utility model;

[0035] Figure 5 This is a schematic diagram of the control module connection of this utility model;

[0036] Figure 6 This is a schematic diagram of the system control flow of this utility model;

[0037] Figure 7 This is a schematic diagram of the system control timing of this utility model.

[0038] Among them, 1-guardrail, 2-platform lifting bollard, 3-cable, 4-control cable, 5-control cabinet, 21-platform lifting bollard one, 22-platform lifting bollard two.

[0039] 51-Cabinet, 52-Control module, 53-Relay assembly, 54-Cable 1, 55-Remote receiver, 56-UPS module, 57-Cable 2. Detailed Implementation

[0040] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0041] according to Figures 1-5As shown, this utility model embodiment provides a control system for a platform lifting guardrail, including: a control cabinet 5, which houses a control module 52; the control module 52 is connected to a relay assembly 53 and a remote control receiver 55 located in the control cabinet 5 via a second cable 57; the drive mechanism located in the platform lifting column 2 is connected to the relay assembly 53 via a control cable 4; the control module 52, the relay assembly 53, and the remote control receiver 55 are all connected to a power source via a first cable 54; and the platform lifting column 2 is connected to a power source via a cable 3.

[0042] This invention addresses the problems in existing platform lifting guardrail control systems, such as local area network outages preventing timely command transmission, occasional delays in passenger service signals, and communication anomalies caused by interference, all of which affect the real-time performance and accuracy of the platform lifting guardrail control system.

[0043] Specifically, the control system of traditional platform lifting guardrails uses a local area network to control the lifting of the platform lifting guardrails. However, in actual use, signal delays or interference can disrupt the normal control and use of the guardrail 1 (platform lifting bollard 2). This invention, by adding a cable control system, enables the direct transmission of the lifting signal of the platform lifting bollard 2, avoiding signal delays or disconnections caused by abnormal local area network communication, and thus preventing the platform lifting bollard 2 from failing to rise or fall normally. The platform lifting guardrail includes guardrail 1 and platform lifting bollard 2. The platform lifting bollard 2 is arranged in groups of at least two, and each group of platform lifting bollard 2 is connected to a guardrail 1. The guardrail 1 is connected to the drive mechanism of the platform lifting bollard 2, and is used to raise or lower the guardrail 1 through the drive mechanism.

[0044] The control cabinet 5 includes a cabinet 51, which houses the control module 52, relay assembly 53, remote control receiver 55, and UPS module 56. In this invention, by adding a wired control system to the existing platform lifting bollard 2, production and construction costs are reduced; the existing wireless control system for the platform lifting bollard 2 is used as a backup control system. The main lifting system uses the wired control method provided by this invention, resulting in better system stability during operation.

[0045] In one embodiment, the relay assembly 53 is an intermediate relay, and the control module 52 is connected to the intermediate relay via cable 2 57; the intermediate relay is connected to the drive mechanism of each station platform lifting column 2 via control cable 4.

[0046] The control module 52 is a PLC controller, model Siemens PLC200smar, which is installed inside the cabinet via a guide rail. When in use, the output interface of the PLC controller can simultaneously connect 8-24 drive mechanisms to achieve synchronous control. The control program of the PLC controller is stored in EEPROM, which is an existing finished product developed and sold by Siemens.

[0047] To improve stability, the PLC controller can be connected to the drive motor in two ways, such as... Figure 5 As shown, the first type involves a PLC controller connected to the motor via a frequency converter, used for speed regulation or start / stop control. The second type involves a PLC controller connected to a servo motor via a servo drive module, enabling precise positioning of the lifting position and precise control of the lifting speed. Since the PLC controller is an existing product, its specific control principle is existing technology; please refer to the product manual corresponding to the PLC controller model for details. This application will not elaborate on this further. The PLC controller is also connected to an HMI and a computer, allowing users to operate it via a computer or view and operate the lifting control status via the HMI.

[0048] Furthermore, the PLC controller communicates with the relay components via the Modbus-RTU protocol, with each relay component corresponding to an independent address code, to achieve time-sharing control.

[0049] The intermediate relay model is JQX-30F / 3ZL 30A high-power relay, which is installed in the cabinet via a DIN rail. The coil voltage is DC12V±10%, and the contact capacity is ≥AC220V / 5A. The control cabinet is equipped with a shielding layer, and cables 3, 1, and 2 are all twisted pairs and protected with flexible metal conduits.

[0050] Furthermore, in combination Figure 6 and Figure 7 As shown, the PLC controller issues a control command (rise or stop), and the relay coil engages or disengages its contacts according to the control command. When engaged, the power is turned on; when disengaged, the power is turned off, thereby realizing the motor's lifting drive and thus the raising and lowering of the column. In other words, the purpose of starting or stopping the motor to raise / lower or stop the column (lock position) is achieved.

[0051] It should be noted that the control method involved in this utility model is existing technology, such as motor-driven control of the lifting column's rise and fall. The core purpose of this utility model is to propose a method of realizing the start and stop control of the lifting column through a cable + control box, so as to distinguish it from the situation in the prior art where wireless transmission control leads to the disconnection of the lifting column's start and stop control signal, resulting in start and stop failure.

[0052] This invention utilizes a PLC controller to directly control the lifting control motor of the platform lifting bollard 2 via an intermediate relay, avoiding the abnormal lifting control signal of the platform lifting bollard 2 caused by the delay of passenger service signals and communication interference caused by the local area network in the prior art.

[0053] In one embodiment, the relay assembly 53 and the control module 52 are arranged in groups, and the control cabinet 5 includes one or more groups. In actual use, the raising and lowering control of the guardrail 1 (i.e., the platform lifting bollard 2 raising and lowering along with the guardrail 1) is generally achieved through one group of control modules 52 and relay assemblies 53. Considering the long and short train formations, the safe and stable operation of the platform, and the need for subsequent expansion, multiple relay assemblies 53, or multiple relay assemblies 53 and control modules 52, can be set according to the actual situation to achieve the purpose of segmented and time-sharing control, thereby improving the system's inclusiveness.

[0054] Furthermore, for example, in actual operation, the number of platform lifting guardrail units can be adjusted to 20-22 depending on the platform length; for example, the guardrail has 22 platform lifting guardrail units, each approximately 23 meters long. Trains operate in both coupled and short formations. When the train is coupled and stopped, all 22 platform lifting guardrail units are controlled to raise and lower; when the train is short and stopped on the up line, units 1-11 are controlled to raise and lower; when the train is short and stopped on the down line, units 12-22 are controlled to raise and lower. Specifically, a platform lifting guardrail unit consists of multiple platform lifting bollards 2 combined in two or three combinations. This includes platform lifting bollard 1 21 and platform lifting bollard 22. Two platform lifting bollards 1 21 form one type of platform lifting guardrail unit; three platform lifting bollards 22 form another type of platform lifting guardrail unit. These two different types of platform lifting guardrail units are combined to form a lifting protection unit group for coupled or short formation trains, i.e., a lifting protection system. Each set of platform lift bollards 21 or 22 is equipped with guardrails; for example, there is one set of guardrails 1 between two platform lift bollards 21. There are two sets of guardrails 1 between three platform lift bollards 22.

[0055] In one embodiment, the power source is AC power and / or UPS module 56;

[0056] When the mains power is used, the control cabinet 5 is equipped with a terminal block. The input end of the terminal block is connected to the mains power output end, and the output end of the terminal block is connected to the control module 52, the relay assembly 53 and the remote control receiver 55 through wires respectively.

[0057] When it is UPS module 56, the input terminal of UPS module 56 is connected to the mains power, and the output terminal is connected to control module 52, relay assembly 53 and remote control receiver 55 through wires respectively.

[0058] When it is a UPS module 56, it also includes a switching power supply at the output end of the UPS module 56, the other end of the switching power supply is electrically connected to the control module 52, the output end of the control module 52 is electrically connected to the relay assembly 53, and is used to supply power to the control module 52 through the UPS module 56.

[0059] In this embodiment, by setting up mains power and UPS module 56, different power supply methods are used to power the control system of the platform lifting guardrail, ensuring that the control will not be interrupted or the lifting platform guardrail will be uncontrollable due to temporary power outages during use.

[0060] In one embodiment, the relay assembly 53 includes: a relay isolation transformer, the input of which is electrically connected to the output of the UPS module 56, and the output of which is connected to the relay coil; the output of the relay coil is engaged or disengaged from the relay contacts via a contact group.

[0061] The input terminal of the relay coil is electrically connected to the controller. The contact group consists of one or more contacts that engage or disengage with the relay contact terminals. The drive mechanism for the platform lifting column 2 is a motor. The input terminal of the motor is connected to the relay contact terminals, and the output terminal is connected to the lifting structure. In this embodiment, a control cable 4 is routed from the control cabinet 5. The control cable 4 is connected to each platform lifting column 2 (one-to-many). The control signal is transmitted through the control cable 4 to achieve the control purpose. This ensures that the PLC controller can control the lifting of each platform lifting column 2 through the intermediate relay.

[0062] In one embodiment, the control cabinet 5 is located on one side of the platform lifting column 2, and the bottom of the control cabinet 5 is fixed by a ground bolt.

[0063] It also includes a handheld wireless remote controller that communicates wirelessly with the remote controller receiver 55; a touch screen that is installed on the side wall of the platform lifting column 2 or the control cabinet 5, the power input terminal of the touch screen is connected to the mains power or UPS module 56, and the signal control terminal of the touch screen is electrically connected to the control module 52.

[0064] In this embodiment, a set of wireless remote control (handheld wireless remote control) and receiver (remote control receiver 55) is added inside the control cabinet 5; the wireless remote control is equipped with lifting mode buttons: including upward lifting, upward lowering, downward lifting, downward lowering, full lifting, and full lowering.

[0065] The PLC controller, through a connected touchscreen, can select multiple platform lifting guardrails included in the upward lifting section according to the actual situation, and form a corresponding upward platform lifting guardrail unit; the downward lifting section includes multiple platform lifting guardrails, and forms a corresponding downward platform lifting guardrail unit; each platform lifting guardrail unit is based on the PLC controller to raise and lower the upward guardrail 1, or the downward guardrail 1.

[0066] Specifically, for better understanding, this utility model is based on the control principle of the Siemens PLC200smar controller, and the specific control flow is explained in conjunction with the electrical connection modules in the lifting control of this utility model: the control logic of this control flow is based on the control algorithm of the Siemens chip. The algorithm and control part are not the research and development points of this application. (Refer to...) Figure 6-7 The specific control process includes:

[0067] The control module 52 receives travel service signals from the travel service system, control commands from the touch screen, or control commands from the wireless remote control. Based on the travel service signals and / or control commands, it makes a judgment. If the requirements are met, the PLC controller outputs a +24V DC signal. This signal is transmitted via cable 57 to the coil input of the corresponding relay in the relay assembly 53.

[0068] When the relay coil receives the +24V DC signal output from the PLC controller, it generates an electromagnetic field. This electromagnetic field drives the internal mechanical contacts (normally open contacts) of the relay to overcome the spring force and engage, thereby connecting the current load circuit.

[0069] After the relay contacts close, the previously disconnected main circuit (powered by AC or UPS from cable 54) is connected. The current in the connected main circuit is then directly transmitted through cable 3 to the drive motor inside the platform lifting column 2. After the drive motor starts working, it drives the drive mechanism to raise or lower the guardrail.

[0070] When the +24V DC signal at the output of the PLC controller is 0V, the relay coil is de-energized, the magnetic field inside the relay disappears, and the mechanical contacts separate under the action of the spring, cutting off the main circuit; at this time, the motor stops working, and the lifting column stops at the current position, thus completing a complete lifting control cycle.

[0071] The touchscreen connects to the control module via an RS485 bus, and its interface layout conforms to the GB / T18978.11-2017 Human-Machine Interface Design Specification. The touchscreen is mounted on the side wall of the cabinet, and is installed at a height of 1.2m ± 0.1m from the ground, based on the GB 20653-2020 Occupational Safety and Health Standard.

[0072] Furthermore, after the wireless remote control sends a command, the receiver receives the command and sends a signal back to the remote control so that the staff can determine whether the command is valid. This solves the problem of inconvenience caused by the long platform and the staff being far away from the control cabinet.

[0073] The wireless remote control scheme involved in this utility model is prior art, and its remote control principle will not be described in detail. The lifting control motor involved is also prior art; the touch screen operation or control involved is also prior art, and its working principle and control method will not be described in detail.

[0074] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A control system for a platform lifting guardrail, characterized in that, include: The control cabinet (5) contains a control module (52); the control module (52) is connected to the relay assembly (53) and the remote control receiver (55) located in the control cabinet (5) via cable 2 (57); The drive mechanism installed inside the platform lifting bollard (2) is connected to the relay assembly (53) via the control cable (4). The control module (52), the relay assembly (53) and the remote control receiver (55) are all connected to the power supply via cable 1 (54). The platform lifting bollard (2) is connected to the power supply via cable (3).

2. The control system for a platform lifting guardrail as described in claim 1, characterized in that, The relay assembly (53) is an intermediate relay, and the control module (52) is connected to the intermediate relay via cable 2 (57). The intermediate relay is connected to the drive mechanism of the lifting column (2) of each station platform via control cable (4).

3. The control system for a platform lifting guardrail as described in claim 1, characterized in that, The relay assembly (53) and the control module (52) are arranged in groups, and the control cabinet (5) includes one or more groups.

4. The control system for a platform lifting guardrail as described in claim 1, characterized in that, The power supply is AC power and / or a UPS module (56); When the mains power is used, the control cabinet (5) is equipped with a terminal block. The input end of the terminal block is connected to the mains power output end, and the output end of the terminal block is connected to the control module (52), the relay assembly (53) and the remote control receiver (55) respectively through wires. When it is a UPS module (56), the input terminal of the UPS module (56) is connected to the mains power, and the output terminal is connected to the control module (52), the relay assembly (53) and the remote control receiver (55) respectively through wires.

5. The control system for a platform lifting guardrail as described in claim 4, characterized in that, When it is a UPS module (56), it also includes a switching power supply at the output end of the UPS module (56), the other end of the switching power supply is electrically connected to the control module (52), the output end of the control module (52) is electrically connected to the relay assembly (53), and is used to supply power to the control module (52) through the UPS module (56).

6. The control system for a platform lifting guardrail as described in claim 5, characterized in that, The relay assembly (53) includes: a relay isolation transformer, whose input end is electrically connected to the output end of the UPS module (56), and whose output end is connected to the relay coil; the output end of the relay coil is engaged or disengaged from the relay contact end through a contact group.

7. The control system for a platform lifting guardrail as described in claim 6, characterized in that, The input terminal of the relay coil is electrically connected to the controller, and the contact group consists of one or more contacts that engage or disengage with the relay contact terminal.

8. The control system for a platform lifting guardrail as described in claim 7, characterized in that, The driving mechanism of the platform lifting column (2) is a motor. The input end of the motor is connected to the relay contact end, and the output end is connected to the lifting structure.

9. The control system for a platform lifting guardrail as described in claim 1, characterized in that, The control cabinet (5) is located on one side of the platform lifting column (2), and the bottom of the control cabinet (5) is fixed by a ground bolt.

10. The control system for a platform lifting guardrail as described in claim 1, characterized in that, It also includes a handheld wireless remote controller that communicates wirelessly with a remote receiver (55); a touch screen that is installed on the side wall of the platform lifting column (2) or control cabinet (5), the power input terminal of the touch screen is connected to the mains power or UPS module (56), and the signal control terminal of the touch screen is electrically connected to the control module (52).

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