Platform screen door control device

Abstract

To reduce power consumption while securing safety by switching control methods of platform fences by a platform fence control device during a time zone of night time from after the last train to before the first train.SOLUTION: A platform fence control device has an operation mode, and a power saving mode for suppressing power consumption by limiting a function more than the operation mode, and controls platform fences to be arranged corresponding to each vehicle door of a train that stops at a platform of a station.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to the technology of platform screen door control devices.

Background Art

[0002] Technologies for movable platform screen doors (hereinafter simply referred to as "platform screen doors") installed on platforms of stations and the like to ensure the safety of users are known. For example, Patent Document 1 discloses a technology related to a movable platform screen door that is provided with a fall-prevention means for preventing the door body from falling toward the platform side or the track side, and has low power consumption.

Prior Art Literature

Patent Literature

[0003]

Patent Document 1

Summary of the Invention

Problem to be Solved by the Invention

[0004] In the technology described in Patent Document 1, in the actually operated platform screen door control method, for example, non-operating time zones (such as nighttime) from after the last train to before the first train, when there are no passengers getting on or off, the platform screen door operates under the same control as that in operating time zones (such as daytime), so it consumes approximately the same amount of power at nighttime as in daytime. Nighttime work by workers and maintenance personnel is still carried out even at night, and it is necessary to ensure safety for construction vehicles, so the power supply of the platform screen door cannot be simply cut off. However, from the perspective of SDGs, it is desirable to achieve power saving by adopting different control methods for nighttime and daytime.

[0005] In view of the above background, the present invention reduces power consumption while ensuring safety by switching the control mode of the platform screen door by the platform screen door control device during the nighttime period from after the last train to before the first train.

Means for Solving the Problem

[0006] The present invention includes an operating mode and a power-saving mode that reduces power consumption by limiting the functions compared to the operating mode. A non-contact obstacle sensor that detects obstacles, It has the ability to control platform gates that are positioned corresponding to each car door of a train stopped at a station platform. The obstruction sensor is activated in the operating mode, and the obstruction sensor is deactivated in the power saving mode. A platform fence control device is provided as a first embodiment.

[0007] According to the first embodiment of the platform screen door control device, power consumption can be reduced while ensuring safety by switching between two control methods with different power consumption for the platform screen doors. Furthermore, this platform screen door control device can reduce power consumption by suspending the obstacle sensor during power-saving mode.

[0008] In the first embodiment of the platform screen door control device, a second embodiment may be adopted in which the speed at which the platform screen doors are opened or closed in the power saving mode is reduced compared to the operating mode.

[0009] According to the second embodiment of the platform screen door control device, power consumption can be reduced in power-saving mode by lowering the speed at which the platform screen doors are opened or closed compared to the operating mode.

[0012] In the first embodiment of the platform screen door control device, the configuration is such that the passage that becomes passable by opening the platform screen door in the power saving mode is narrower than in the operating mode. 3 This may be adopted as one of the following forms.

[0013] The 3 According to the platform screen door control device of this type, power consumption can be reduced in power-saving mode by making the passage that becomes passable when the platform screen doors are opened narrower compared to the operating mode.

[0014] In the first embodiment of the platform gate control device, a plurality of platform gates are arranged corresponding to each of the vehicle doors, a corresponding passage is closed by the plurality of platform gates, all of the plurality of platform gates corresponding to the passage are operated in the operating mode, and only a portion of the plurality of platform gates corresponding to the passage are operated in the power saving mode. 4 This may be adopted as one of the following forms.

[0015] The 4 According to the platform screen door control device of this type, power consumption can be reduced by operating only a portion of the multiple platform screen doors corresponding to a single aisle during power saving mode.

[0016] In the first embodiment of the platform screen door control device, the conditions for determining that the platform screen door has closed in the power saving mode are made more lenient compared to the operating mode. 5 This may be adopted as one of the following forms.

[0017] The 5 According to the platform screen door control device of this type, in power-saving mode, the conditions for determining that the platform screen door has closed are made more lenient compared to the operating mode, and the number of control steps is reduced, thereby reducing power consumption.

[0018] In the first embodiment of the platform screen door control device, the device communicates periodically with each of the multiple platform screen doors in the operating mode, and communicates with each of the multiple platform screen doors at a longer interval than in the operating mode in the power saving mode. 6 This may be adopted as one of the following forms.

[0019] The 6 According to the platform fence control device of this type, power consumption can be reduced by communicating at a longer cycle than in the operating mode when in power saving mode.

[0020] In the platform screen door control device according to the first aspect, a configuration may be adopted as the 7 aspect that the platform screen door control device comprises notification means for notifying surroundings, operates the notification means in the operation mode, and suppresses output of the notification means in the power saving mode compared with that in the operation mode.

[0021] According to the 7 aspect of the platform screen door control device, power consumption can be reduced by suppressing the output of the notification means in the power saving mode compared with that in the operation mode.

[0022] In the 7 aspect of the platform screen door control device, a configuration may be adopted as the 8 aspect that the notification means is stopped in the power saving mode.

[0023] According to the 8 aspect of the platform screen door control device, power consumption can be reduced by stopping the notification means in the power saving mode. [Effects of the Invention]

[0024] According to the present invention, by switching the control mode of the platform screen door by the platform screen door control device during non-operation time periods such as nighttime from after the last train to before the first train, power consumption can be reduced while ensuring safety. [Brief Description of the Drawings]

[0025] [Figure 1] FIG. 1 is a diagram illustrating an example of a platform screen door control system 1. [Figure 2] FIG. 2 is a diagram illustrating an example of a network configuration, a hardware configuration, and a component configuration in the platform screen door control system 1. [Figure 3] FIG. 3 is a diagram illustrating an example of a comparison list of control functions between an operation mode and a power saving mode in the platform screen door control device. [Figure 4] FIG. 4 is a diagram illustrating an example of opening and closing of a platform screen door at a station platform. [Mode for Carrying Out the Invention]

[0026] 1. Structure Figure 1 is an illustrative diagram of platform screen door control system 1. Platform screen door control system 1 is a system that controls platform screen doors on a station platform, for example. Platform screen door control system 1 includes a platform screen door control device 10a, a platform screen door control device 10b, and a higher-level device 20. In this example, the platform screen door control device 10a is an information processing device that controls platform screen doors. The platform screen door control system and platform screen door control device refer to a system and information processing device that control platform screen doors that are placed in accordance with each car door of a train stopped on a station platform. In this example, platform screen doors refer to structures or doors installed in conjunction with the arrival and departure of trains for purposes such as preventing falls and securing passages (or restricting passage) to allow passengers to safely board and alight from trains. In this example, car doors refer to doors provided on train cars for passengers to board and alight from trains. Note that platform screen door control device 10a and platform screen door control device 10b are both examples of platform screen door control devices and have the same configuration. Therefore, in Figure 1, the configuration of platform screen door control device 10b is partially omitted. Hereinafter, platform screen door control devices 10a and 10b will be collectively referred to as platform screen door control device 10. The higher-level device 20 is an information processing device for managing the platform screen door control devices 10. In this example, management includes the concept of overall control and means that it is responsible for the functions necessary to make the platform screen door control system 1 function for each individual platform screen door control device 10. Each platform screen door control device 10, or the higher-level device 20 and the platform screen door control device 10, communicates electrically via a communication line 90. In this example, each device refers to the platform screen door control device 10 (including platform screen door control devices 10a and 10b) and the higher-level device 20.

[0027] The platform screen door control device 10a comprises a control unit 11, a door unit 12, a drive unit 13, an obstacle sensor 14, and a notification unit 15. In the platform screen door control device 10a, the control unit 11 performs various controls. In this example, the control unit 11 has electronic and engineering connections to the door unit 12, the drive unit 13, the obstacle sensor 14, and the notification unit 15, and can control components, equipment, and devices through these connections. The door unit 12 opens or closes the passage for users to pass through by moving in the direction of movement. The drive unit 13 has a mechanism for moving the door unit 12 in accordance with various controls. The obstacle sensor 14 detects (detects) obstacles that hinder the movement of the door or pose a risk of contact in order to perform various controls on the door unit 12, etc. The notification unit 15 issues an alarm to prevent accidents if the obstacle detected by the obstacle sensor 14 is a person, or if the obstacle is an object, it notifies nearby staff (or users) to remove the obstacle. Note that the notification unit 15 is just one example of a notification means.

[0028] Furthermore, the control unit 11 enables control of the platform screen doors to be suitable for actual use by switching control methods (or simply "modes") when performing various types of control. In this example, the control methods are an operational mode and a power-saving mode that reduces power consumption by limiting functions compared to the operational mode. In this example, the operational mode is used at stations, for example, during operating hours when there are passengers getting on and off (daytime, etc.). On the other hand, the power-saving mode is used during non-operating hours when there are no passengers getting on and off (nighttime, etc.), for example, from after the last train until before the first train. It should be noted that even at night, night work is carried out by workers and maintenance personnel, and in order to ensure the safety of workers and maintenance personnel from construction vehicles, the power-saving mode does not mean stopping the system itself (cutting off the power, etc.), but rather means that some functions are enabled.

[0029] The higher-level device 20 has a control unit 21. In the higher-level device 20, the control unit 21 performs various controls. In this example, the control unit 21 may include a functional configuration as a management device for each platform fence control device 10 to make the platform fence control system 1 function. Alternatively, the control unit 21 may also include a functional configuration as a platform fence control device 10 for directly controlling the platform fences.

[0030] Figure 2 illustrates the network configuration, hardware configuration, and component configuration of the platform screen door control system 1. The platform screen door control system 1 includes a platform screen door control device 10a, a higher-level device 20, and a network 9. In this example, the platform screen door control device 10a and the higher-level device 20 are connected via the network 9. More specifically, the network 9 forms a network between multiple platform screen door control devices 10 (not just 10a, but also devices such as 10b, 10c, 10d, etc. (not shown)) and the higher-level device 20, which are positioned corresponding to each vehicle door of a train stopped at the platform. The network 9 is a computer network such as an intranet.

[0031] The home gate control device 10a is a computer having a CPU (Central Processing Unit) 101 as a control unit, memory 102, storage 103, and communication IF 104, and is, for example, a computer for an embedded system. The CPU 101 is a processor that performs various calculations according to a program. The memory 102 is a main memory that functions as a work area when the CPU 101 executes a program, and includes, for example, RAM (Random Access Memory). The storage 103 is an auxiliary memory that stores various data and programs, and includes, for example, an SSD (Solid State Drive) or HDD (Hard Disk Drive). The communication IF 104 is a device that communicates with other devices according to a predetermined communication standard (for example, Ethernet®), and includes, for example, a NIC (Network Interface Card).

[0032] In this example, the program stored in storage 103 includes a program (hereinafter referred to as the "client program") that allows the computer to function as a client in the home fence control system 1. When the CPU 101 is executing the client program, the CPU 101, memory 102, storage 103, and communication IF 104 constitute an example of the control unit 11.

[0033] Furthermore, the platform screen door control device 10a has a configuration that includes electronic machinery such as a door body 105, a motor 106, a belt 107, an infrared sensor 108, a speaker 109, and a display device 110. In this example, electronic machinery refers to electronically and mechanically controlled devices that perform various operations according to a program executed by the control unit 11 (CPU 101). The door body 105 is a structure having an opening and closing mechanism for restricting the passage of users. The shape of the door body 105 is not limited to a door shape, but may be in the shape of a rope or a bar, for example. The motor 106 is a device having a drive mechanism for opening and closing the platform screen door for users, and includes, for example, an electromagnetic motor or an electrostatic motor. The belt 107 is one of the drive components for transmitting the drive of the motor 106 when, for example, opening and closing the door body 105, and includes, for example, a timing belt or a timing pulley. The infrared sensor 108 is a device that detects obstacles that may hinder movement or pose a risk of contact when controlling the door body 105 in various ways, and includes, for example, a quantum infrared detector or a thermal infrared detector. The speaker 109 and the display device 110 are devices that emit (notify) or display information such as alarms for accident prevention, and include, for example, a buzzer or siren, or a patrol light (registered trademark) or a display.

[0034] In this example, the door body 105 is an example of the door section 12, the motor 106 and belt 107 are an example of the drive device 13, the infrared sensor 108 is an example of the obstacle sensor 14, and the speaker 109 and display device 110 are an example of the notification unit 15.

[0035] The host device 20 is a computer having a CPU 201, memory 202, storage 203, communication IF 204, input device 205, and display device 206, and is, for example, a computer for embedded systems, a personal computer, or a mainframe. The CPU 201 is a processor that performs various calculations according to a program. The memory 202 is a main memory that functions as a work area when the CPU 201 executes a program, and includes, for example, RAM. The storage 203 is an auxiliary memory that stores various data and programs, and includes, for example, an SSD or HDD. The communication IF 204 is a device that communicates with other devices according to a predetermined communication standard (e.g., WiFi®), and includes, for example, a wireless chip. The input device 205 is a device for inputting information to the host device 20, and includes, for example, a touchscreen, a keyboard, or a pointing device. The display device 206 is a device that displays information, and includes, for example, an organic EL display.

[0036] In this example, the program stored in storage 203 includes a program (hereinafter referred to as the "server program") that causes the computer to function as a server in the home fence control system 1. When the CPU 201 is executing the server program, the CPU 201, memory 202, storage 203, communication IF 204, input device 205, and display device 206 constitute an example of the control unit 21.

[0037] 2.Operation Figure 3 illustrates a comparison list of control functions in the operating mode and power-saving mode of a platform screen door control device. In this example, the comparison list includes a relative comparison of the control functions performed in the operating mode and power-saving mode. The following explanation is an example of operation in accordance with the control functions in the operating mode and power-saving mode shown in Figure 3. In this example, the platform screen door control device 10 has multiple functions, and in power-saving mode, each function operates with reduced power consumption compared to the operating mode. The operation of each function in power-saving mode will be explained below.

[0038] (1) Speed ​​of opening / closing platform screen doors In power-saving mode, the platform screen door control device 10 reduces the speed at which it opens or closes the platform screen doors compared to the operation mode. In this example, in operation mode, the platform screen door control device 10 needs to control the platform screen doors at a speed corresponding to each car door of a train stopped at the station platform during the daytime. Since the arrival and departure of trains are controlled by timetables, in order to facilitate the boarding and alighting of passengers, for example, in operation mode, the platform screen door control device 10 may set the speed at which it opens or closes the platform screen doors to 40 cm per second. On the other hand, at night when there are no passengers, in power-saving mode, the platform screen door control device 10 may set the speed at which it opens or closes the platform screen doors to 20 cm per second. In this case, since the opening or closing speed of the platform screen doors is related to the rotational speed of the motor 106, for example, by reducing the rotational speed and reliably transmitting power from the drive unit 13 to the platform screen doors, power consumption due to energy loss can be reduced.

[0039] (2) Obstacle sensor The platform screen door control device 10 has an obstacle sensor that detects obstacles without contact. In this example, the obstacle sensor 14 or infrared sensor 108 is an example of an obstacle sensor. The platform screen door control device 10 operates the obstacle sensor in operation mode and deactivates the obstacle sensor in power saving mode. In this example, when there are no users, such as at night, there is no risk of trouble caused by obstacles such as users' luggage or users themselves, so power consumption can be reduced without any problems even if the obstacle sensor is deactivated.

[0040] Figure 4 illustrates the opening and closing of platform screen doors on a train station platform. In this example, opening the platform screen doors means that the door sections 121 and 122 move in their respective directions, opening the passage A1 for passengers to pass through. Closing the platform screen doors means that the door sections 121 and 122 come into contact (or approach each other), closing the passage A1 for passengers to pass through. In Figure 4, the passage refers to, for example, the width (horizontal width) from one end of the two-way arrow in passage A1 to the other end.

[0041] (3) width of the passage The platform screen door control device 10 narrows the passage that becomes passable when the platform screen door is opened in power-saving mode compared to the operating mode. In this example, when the platform screen door control device 10 controls the platform screen door from a closed state to an open state, it sets the length of passage A1 in the operating mode as seen from the user (i.e., the width mentioned above) to, for example, 3m, and the length of passage A1 in power-saving mode to, for example, 1.5m. This reduces the amount of motor drive (rotation speed) required to open the platform screen door once, thereby reducing power consumption.

[0042] (4) Number of platform screen doors in operation In the platform screen door control device 10, multiple platform screen doors are arranged in correspondence to each car door of a train stopped on a station platform, and a corresponding passage is closed or opened by these multiple platform screen doors. In Figure 4, door sections 121 and 122 are examples of multiple platform screen doors. Passage A1 is an example of a single passage. In operation mode, the platform screen door control device 10 operates all of the multiple platform screen doors corresponding to a passage, and in power saving mode, it operates only some of the multiple platform screen doors corresponding to a passage. That is, in Figure 4, when the platform screen door control device 10 controls the platform screen doors from an open state to a closed state (or from a closed state to an open state), in operation mode, door sections 121 and 122 are moved in the direction of movement, and in power saving mode, for example, only door section 121 is moved in the direction of movement, while door section 122 remains stationary in the direction of movement. This reduces the amount of motor power (rotation speed) required for the entire platform barrier system, as multiple platform barriers close (or open) a corresponding passageway once, thereby lowering power consumption.

[0043] (5) Conditions for closing platform screen doors In power-saving mode, the platform screen door control device 10 makes the conditions for determining that the platform screen door is closed more lenient compared to the operating mode. In this example, the closing of the platform screen door refers to the state in which, for example, as shown in Figure 4, door sections 121 and 122 are in contact (or approaching) each other, and the passage A1 for users to pass through is closed. In operating mode, for example, when transitioning the platform screen door from an open state to a closed state, the platform screen door control device 10 calculates the distance from the current position to the closed position based on the record of the motor's rotation speed, and controls the motor to operate for the number of rotations corresponding to that distance. For example, when controlling both doors, such as door sections 121 and 122, the rebound (recoil) caused by the contact between the doors during closing affects the motor's rotation speed, so the change in that rotation speed may be used as the condition for determining that the platform screen door is closed (closing condition). At this time, if the actual distance the doors move does not reach the calculated distance due to errors such as belt wear or motor deterioration, the motor's rotation speed will not be affected (the doors will not come into contact), and the motor will need to be operated further to move the platform gate to the closed position. However, during nighttime hours when there are no users, even if the platform gate is not strictly closed, the risk is considered low, so the platform gate control device 10 does not perform control to operate the motor again until it can no longer rotate in power-saving mode. Alternatively, the condition for determining that the platform gate is closed may simply be the width of the gap between the doors, and the motor may be controlled by setting the gap width to 10 mm or less in operation mode and 100 mm or less in power-saving mode. In other words, in either case, power consumption can be reduced by loosening the closing conditions and reducing the number of control steps.

[0044] (6) Communication cycle The platform screen door control device 10 communicates with each of the multiple platform screen doors. In this example, "platform screen door" does not refer to a single door body 105, for example, but rather is a concept that includes the platform screen door control device 10, which has a control unit capable of communication. In operation mode, the platform screen door control device 10 communicates with each of the multiple platform screen doors periodically, and in power saving mode, it communicates with each of the multiple platform screen doors at a longer interval than in operation mode. In this example, the platform screen door control device 10 may periodically communicate with each platform screen door in order to synchronize the time of the platform screen doors and share information. Alternatively, the higher-level device 20 may periodically communicate with each of the multiple platform screen doors via the communication line 90 in order to share information, such as a pull-type control that requests information from the platform screen door control device 10a, for example (not shown). In that case, the communication frequency (communication cycle) may be set, for example, the communication frequency may be set to once every 15 minutes in operation mode and once every hour in power saving mode. By reducing the communication frequency (lengthening the communication cycle) in this way, power consumption can be reduced.

[0045] (7)Notification The platform screen door control device 10 has means for notifying the surroundings to issue warnings. In this example, the notification unit 15, speaker 109, or display device 110 are examples of notification means. The platform screen door control device 10 operates the notification means in operation mode and suppresses the output of the notification means compared to operation mode in power saving mode. In this example, the output of the notification means is the volume of speaker 109 or the light intensity of the warning light (registered trademark) as the display device 110. In this case, at night there is less crowding of users compared to daytime and the platform lights are off, so even if the notification means is operated with its output suppressed, the necessary alarm sound will not be drowned out by ambient noise, and the light from the lamp will not be blocked by other lighting equipment. By suppressing the output of the notification means in this way, power consumption can be reduced without affecting safety.

[0046] The platform screen door control device 10 may disable its notification system in power-saving mode. In this case, power consumption can be reduced in situations where it is known in advance that no one will be present, such as during the period between the end of nighttime construction work and the start of the first train.

[0047] Based on the above, according to one embodiment of the present invention, by switching the control method of the platform fences by the platform fence control device 10 during the nighttime period from after the last train to before the first train, power consumption can be reduced while ensuring safety. Furthermore, in the above embodiment, the control by the power saving mode does not impede the assurance of safety, and various control functions may be freely set according to the usage situation and management situation. In addition, in power saving mode, the platform fence control device 10 may apply all of the control functions in (1) to (7) above, or it may apply only some (one or more) of them selected by the user (administrator).

[0048] The configurations, shapes, sizes, and arrangements described in the above embodiments are merely schematic representations to the extent that the present invention can be understood and implemented. Therefore, the present invention is not limited to the described embodiments and can be modified in various forms as long as it does not deviate from the scope of the technical idea set forth in the claims.

[0049] 3. Variant The present invention is not limited to the embodiments described above, and various modifications are possible. Several modifications are described below. Two or more of the matters described below may be applied in combination.

[0050] (1) Platform screen door control device The platform screen door control device 10a may be a device independent of the display device 110, which is an electronic device, such as the door body 105, motor 106, belt 107, infrared sensor 108, speaker 109, and display device 110, as illustrated in the embodiment. In this example, the platform screen door may be a concept that includes only the platform screen door control device 10a, or the entire or a part of the electronic device.

[0051] (2) Higher-level device The higher-level device 20 may be a management device for managing individual platform screen door control devices 10, or it may be a control device that directly controls platform screen doors. In this example, the higher-level device 20 may employ pull-type and push-type control methods or communication methods to manage individual platform screen door control devices 10. More specifically, the higher-level device 20 may send request signals (pull-type) to individual platform screen door control devices 10 to collect and share operation records (malfunction records) held by the platform screen door control devices 10, or distribute time information (push-type) for time synchronization. In this case, as shown in Figures 1 and 2, the higher-level device 20 is connected to the platform screen door control devices 10 via communication lines 90, and the entire system forms a network 9. In this example, as shown in Figure 1, the communication lines 90 may connect the higher-level device 20 and adjacent platform screen door control devices 10b, and adjacent platform screen door control devices 10 (platform screen door control device 10a and platform screen door control device 10b), thereby forming a network 9. More specifically, when the higher-level device 20 communicates with individual platform screen door control devices 10, network control may be performed such that individual platform screen door control devices 10 relay or relay communications via the communication line 90, depending on whether the communication is for the entire system or limited to specific devices. Note that the control method, communication method, and network construction (control) configuration are not limited to these and any other configuration may be adopted. Also, while Figure 1 shows the higher-level device 20 positioned near the platform screen door control devices 10 on a station platform, it may be installed remotely in a central control room or similar location; the installation location is not limited.

[0052] (3) Others The hardware configuration of the home gate control system 1 is not limited to those illustrated in the embodiments. The home gate control system 1 may have any hardware configuration as long as it can realize the required functions. For example, multiple physical devices may cooperate to function as the home gate control device 10a or the higher-level device 20. The higher-level device 20 may be a physical server or a virtual server (including so-called cloud). Furthermore, the correspondence between functional elements and hardware is not limited to those illustrated in the embodiments. For example, at least some of the functions described as being implemented in the home gate control device 10a in the embodiments may be implemented in the higher-level device 20, and conversely, at least some of the functions described as being implemented in the higher-level device 20 may be implemented in the home gate control device 10a. Also, some of the configuration shown in Figure 2 may be omitted.

[0053] The types of platform screen doors are not limited to those exemplified in the embodiments. For example, instead of the door body 105 in the embodiments, there may be a rope or bar, and the platform screen door may be a rope-type or bar-type platform screen door that allows the passage to be secured (or passage to be restricted) by raising or lowering the rope or bar. In this example, the raising and lowering of the rope or bar may be made possible by the extension and retraction of a support column to which the rope or bar is connected, and the direction of movement of the rope or bar may be the direction of extension and retraction of this support column. Furthermore, in the case of a passage A1 that is opened or closed by raising or lowering the rope or bar, the power saving mode may have a configuration that adjusts the height at which the rope or bar is stopped so that the passage A1 is narrower than in the operating mode. That is, in power saving mode, the platform screen door control device 10 may shorten the vertical length of passage A1 in addition to the horizontal length described above, compared to the operating mode. Furthermore, this height or the position of the support column may be adopted as a condition for determining that the platform screen door is closed (open). Furthermore, the platform screen door may be composed of multiple ropes or bars corresponding to one passage. Furthermore, platform screen doors that support multiple doors 105 controlled by a single device, or platform screen doors with double (multiple) sliding doors 105, or large-opening platform screen doors, may also be used. Other features such as weight reduction and smarter designs for the doors 105 may also be applied in combination.

[0054] The control functions and comparison list shown in Figure 3 are merely examples, and the control functions or limiting functions of the platform screen door control system 1 are not limited thereto. Furthermore, in the power saving mode of the comparison list, when limiting functions to reduce power consumption, the administrator may define the range within which safety is not compromised and set the control functions accordingly. Alternatively, a pre-trained machine learning device, which has been given the control functions of power saving modes used or set at other stations or the station in question as training data, may be configured to propose and manage the optimal power saving mode control functions according to the day's timetable, nighttime construction schedule, etc. By sharing information among machine learning devices at each station (i.e., multiple stations) along the entire line, optimal power saving can be achieved not only at a single station but also at each station of the platform screen door control system 1 along the entire line. Note that a station in the platform screen door control system 1 is any place with a platform for trains, buses, etc. to stop, and can be any place with platform screen doors, etc.

[0055] Furthermore, in the above embodiment, the operating time is described as the time period during which trains with passengers are in operation, for example. However, the distinction between operating time and non-operating time is merely an example, and the control method may be switched based on any time (period) division. Therefore, the non-operating time (the term "maintenance time" also refers to the same meaning) does not have to be at night, for example, when a train is temporarily stopped during the day for maintenance work. The control method may also be switched according to various other purposes.

[0056] The various programs executed by CPU 101 and CPU 201 may be provided via download over a network such as the Internet, or they may be provided recorded on a computer-readable non-temporary recording medium such as a DVD-ROM. Each processor may also be replaced by, for example, an FPGA (Field Programmable Gate Array), or may include an FPGA. Furthermore, these processors may have an ASIC (Application Specific Integrated Circuit) or other programmable logic device, and may be controlled by these. [Explanation of symbols]

[0057] 1…Platform fence control system, 10, 10a, 10b…Platform fence control device, 11…Control unit, 12…Door unit, 13…Drive unit, 14…Obstacle sensor, 15…Notification unit, 20…Host device, 21…Control unit, 90…Communication line, 9…Network, 101…CPU, 102…Memory, 103…Storage, 104…Communication IF, 105…Door body, 106…Motor, 107…Belt, 108…Infrared sensor, 109…Speaker, 110…Display device, 201…CPU, 202…Memory, 203…Storage, 204…Communication IF, 205…Input device, 206…Display device, A1…Passageway, 121, 122…Door unit

Claims

1. A platform fence control device having an operating mode, a power saving mode that reduces power consumption by limiting functions compared to the operating mode, and an obstacle sensor that detects obstacles without contact, which controls platform fences that are positioned corresponding to each car door of a train stopped on a station platform, and which operates the obstacle sensor in the operating mode and deactivates the obstacle sensor in the power saving mode.

2. The platform gate control device according to claim 1, wherein in the power saving mode, the speed at which the platform gate is opened or closed is reduced compared to the operating mode.

3. The platform gate control device according to claim 1, wherein the passage that becomes passable by opening the platform gate in the power saving mode is made narrower compared to the operating mode.

4. The platform gate control device according to claim 1, wherein a plurality of platform gates are arranged in correspondence for each of the vehicle doors, a corresponding passage is closed by the plurality of platform gates, all of the plurality of platform gates corresponding to the passage are operated in the operating mode, and only a portion of the plurality of platform gates corresponding to the passage are operated in the power saving mode.

5. The platform screen door control device according to claim 1, wherein the conditions for determining that the platform screen door has been closed in the power saving mode are made more lenient compared to the operating mode.

6. The platform screen door control device according to claim 1, wherein in the operating mode, it periodically communicates with each of the multiple platform screen doors, and in the power saving mode, it communicates with each of the multiple platform screen doors at a longer period than in the operating mode.

7. The platform fence control device according to claim 1, comprising means for notifying the surroundings, operating the notification means in the operating mode, and suppressing the output of the notification means in the power saving mode compared to the operating mode.

8. The platform fence control device according to claim 7, wherein the notification means is suspended in the power saving mode.

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