JP7523981B2 - Platform door device, platform door device control method, and platform door device control program - Google Patents

Description

The present invention relates to a platform door device, a control method for the platform door device, and a control program for the platform door device.

Patent Document 1 describes a platform door system that opens and closes in conjunction with the opening and closing of train boarding and alighting doors at the platform. This platform door system comprises N platform doors with individual control units that control the motors that open and close the sliding doors, and an integrated control unit that is responsible for the overall control of the N platform doors. The individual control units output data that represents physical quantities related to the state of each platform door to the integrated control unit, and the integrated control unit controls each platform door through each individual control unit.

JP 2019-182252 A

The inventor has come to the following realization regarding a platform door system equipped with multiple platform door devices that are installed side by side on a station platform and that open and close in sync with the doors of the railway vehicle. Some platform door systems are equipped with individual control panels provided for each of the multiple platform door devices, and a general control panel that integrates each of the individual control panels. This general control panel acquires status information, such as the open/closed status, generated by the individual control panels of the platform door devices, and when the acquired status information indicates all of the specified states, outputs a signal to the vehicle indicating that the specified states have been confirmed (hereinafter referred to as a "status confirmation signal").

For example, after a train arrives at the platform, when status information indicating an open state is acquired from all platform door devices, the general control panel outputs a signal to the train to allow the train doors to open. Also, when a train departs, when status information indicating a closed state is acquired from all platform door devices, the general control panel outputs a signal to the train to allow the train doors to close.

However, with this system, if a platform door device stops due to a malfunction or other reason, this device does not generate status information, so the integrated control panel that integrates this device cannot output a status confirmation signal, and other normal platform door devices that are linked to this device cannot be used.

Based on these findings, the inventors recognized that there is room for improvement in the platform door system described in Patent Document 1 from the perspective of making it possible to use other platform door devices when some of the platform door devices are stopped.

The present invention was made in consideration of these problems, and its purpose is to provide technology that allows other platform door devices that work in conjunction with the same device to be used even when the platform door device is stopped.

In order to solve the above problems, a platform door device according to one embodiment of the present invention includes a drive unit that drives the opening and closing of the doors that constitute the platform entrance and exit points; a detection unit that detects a specific state, which is at least one of a fully open state of the doors, a fully closed state of the doors, a state in which there are no obstacles on the path of the door movement, and a state in which there is no abnormality in the drive unit; a wireless communication unit that wirelessly communicates with an external operation terminal; a specific state transmission unit that transmits the specific state detected by the detection unit to a general control panel that controls the opening and closing of the platform door device installed on the platform when the wireless communication unit does not receive a signal from the operation terminal; and a simulated state transmission unit that transmits a simulated state that simulates the specific state to the general control panel when the wireless communication unit receives a signal from the operation terminal, regardless of the detection result of the detection unit.

In addition, any combination of the above, or mutual substitution of the components or expressions of the present invention among methods, devices, programs, temporary or non-temporary storage media on which programs are recorded, systems, etc. are also valid aspects of the present invention.

The present invention provides a platform door device that allows other platform door devices linked to the device to be used even when the platform door device is stopped.

FIG. 1 is a block diagram illustrating a platform screen door system equipped with a platform door device according to a first embodiment. FIG. 2 is an oblique view showing the platform door device of FIG. 1. A block diagram showing the individual control panels and the general control panel of the platform door device of Figure 1. FIG. 2 is a circuit diagram showing the periphery of the simulated state transmission unit of the platform door device of FIG. 1. 2 is a flowchart showing the control in the stop mode of the platform door device of FIG. 1. 4 is a flowchart showing a first control of the platform door system of FIG. 1 . 4 is a flowchart showing a second control of the platform door system of FIG. 1.

The present invention will be described below based on a preferred embodiment with reference to the drawings. In the embodiments and modified examples, identical or equivalent components and parts are given the same reference numerals, and duplicated explanations will be omitted as appropriate. Furthermore, the dimensions of the parts in each drawing are shown enlarged or reduced as appropriate to facilitate understanding. Furthermore, some of the parts that are not important for explaining the embodiment are omitted in each drawing.

In addition, terms including ordinal numbers such as first and second are used to describe various components, but these terms are used only for the purpose of distinguishing one component from another and do not limit the components.

[First embodiment]
A platform door device 100 according to a first embodiment of the present invention will be described with reference to Figures 1 to 3. Figure 1 is a block diagram showing a platform door system 1 equipped with the platform door device 100. Figure 2 is a perspective view showing the platform door device 100. Figure 3 is a block diagram showing an individual control panel 20 and a general control panel 50 of the platform door device 100.

First, the platform door system 1 will be described. The platform door system 1 comprises multiple platform door devices 100 and a general control panel 50. In the following description, when identification is necessary for the purpose of explanation, one of the multiple platform door devices 100 is distinguished from the other platform door devices by adding "A" or "B" to the end of the reference numerals. In addition, the individual control panel of one platform door device 100A is distinguished from the individual control panel of the other platform door device 100B by adding "A" or "B" to the end of the reference numerals. Therefore, the multiple platform door devices 100 in this embodiment include one platform door device 100A and another platform door device 100B that have the same configuration.

Multiple platform door devices 100 are provided on the up and down tracks of the station platform, and are arranged at the boarding and alighting entrances provided at positions corresponding to the vehicle doors of a railway vehicle 52 when the railway vehicle 52 stops at a predetermined position on the platform. The platform door device 100 has a door pocket section 10, doors 12 that move left and right from the door pocket section 10, and an individual control panel 20.

One general control panel 50 is provided at each platform, and is connected to each individual control panel 20 of the multiple platform door devices 100 to control the opening and closing of the platform door devices. The doors 12 are controlled to open and close by the general control panel 50 via the individual control panels 20. Passengers can board and disembark from the vehicle 52 by opening the vehicle door and the door 12, and passengers can be restricted from boarding and disembarking by closing either the vehicle door or the door 12.

The connection between the general control panel 50 and each individual control panel 20 is made via a first transmission path 41 and a second transmission path 44. The first transmission path 41 and the second transmission path 44 are configured to form a loop between the general control panel 50 and each individual control panel 20. In this example, forming a loop means forming a circulating transmission path that transmits information by circulating between the general control panel 50 and each individual control panel 20 in sequence, and this can be realized by a known connection method such as a bus connection, a parallel connection, a serial connection, or a series connection.

The general control panel 50 and each individual control panel 20 can communicate with each other via the first transmission path 41. For example, the general control panel 50 transmits an opening/closing command signal for the door 12 to each individual control panel 20 via the first transmission path 41. Each individual control panel 20 can transmit a specific state of the platform door device 100 via the second transmission path 44. The specific state will be described later.

The general control panel 50 and the vehicle 52 can communicate with each other via the vehicle information transmission device 54 and the ground coil 53. The vehicle 52 can transmit an open request signal and a close request signal, which will be described later, to the general control panel 50. The general control panel 50 can transmit a full open confirmation signal and a full closed confirmation signal, which will be described later, to the vehicle 52.

The operation of the platform screen door system 1 will be described with reference to FIG. 1. When the vehicle 52 reaches a predetermined position on the platform, the driver of the vehicle 52 transmits an open request signal to open the doors 12 of all the platform door devices 100 to the general control panel 50 via the ground coil 53 and the vehicle information transmission device 54. Upon receiving this open request signal, the general control panel 50 supplies an open command signal to each individual control panel 20. In response to this open command signal, the individual control panel 20 opens the corresponding door 12 and transmits an open confirmation signal (first specific state described later) to the general control panel 50. Upon receiving open confirmation signals from all the individual control panels 20, the general control panel 50 transmits a full open confirmation signal to the vehicle 52 via the vehicle information transmission device 54 and the ground coil 53. Upon receiving this full open confirmation signal, the driver of the vehicle 52 opens the vehicle door.

When vehicle 52 departs from the platform, the driver of vehicle 52 transmits a close request signal to the general control panel 50 via the ground coil 53 and the vehicle information transmission device 54. Upon receiving this close request signal, the general control panel 50 supplies a close command signal to each individual control panel 20. In response to this close command signal, each individual control panel 20 closes the corresponding door 12 and transmits a close confirmation signal (a second specific state described later) to the general control panel 50. Upon receiving close confirmation signals from all individual control panels 20, the general control panel 50 transmits a full close confirmation signal to vehicle 52 via the vehicle information transmission device 54 and the ground coil 53. Upon receiving this full close confirmation signal, the driver of vehicle 52 closes the vehicle door.

As shown in FIG. 3, the general control panel 50 includes a state acquisition unit 56, a command control unit 57, and a communication control unit 58. The state acquisition unit 56 acquires a specific state or a simulated state, which will be described later, from the individual control panel 20 via the second transmission path 44. When the specific state or the simulated state satisfies a predetermined condition, the command control unit 57 transmits an open command signal or a close command signal to the door control unit 26 provided in the individual control panel 20 via the first transmission path 41 when it receives an open request signal or a close request signal from the vehicle 52. The door control unit 26 controls the drive unit 14 in response to the open command signal or the close command signal to open or close the door 12. When the specific state or the simulated state satisfies a predetermined condition, the communication control unit 58 transmits a full open confirmation signal or a full close confirmation signal to the vehicle information transmission device 54.

The communication control unit 58 also transmits predetermined information to a station office display device 60 provided in the station office via a transmission path 60c. As an example, the station office display device 60 displays the status and fault details of the doors 12 of the up and down lines based on this information. The communication control unit 58 also transmits predetermined information to a general command room display device 62 in a general command room provided at a location away from the station via an external transmission path 62c. As an example, the general command room display device 62 displays the status of the doors 12 of all stations based on this information.

The platform door device 100 will be described with reference to Figures 2 and 3. The door pocket section 10 of the platform door device 100 functions as a door pocket that stores the panel-shaped door 12 so that it can be advanced and retreated. The door pocket section 10 is provided with a drive section 14 that drives the door 12 to open and close, an electric lock 15, an individual control panel 20, and various sensors. The drive section 14 is equipped with a motor 14m that opens and closes the door 12 in response to the control of the door control section 26 of the individual control panel 20. The electric lock 15 locks the door 12 when it is closed to prevent passengers from opening the door 12 without permission. The electric lock 15 is locked and unlocked in response to the control of the door control section 26 of the individual control panel 20. The electric lock 15 can be unlocked by operating an unlock button (not shown) provided in the door pocket section 10.

The various sensors will be described with reference to Figure 3. The platform door device 100 is provided with a door open position sensor 30, a door closed position sensor 31, a drive status sensor 32, and an obstacle sensor 33. The door open position sensor 30 is a sensor that detects whether the door 12 is in the open position. The door closed position sensor 31 is a sensor that detects whether the door 12 is in the closed position. As an example, photoelectric sensors can be used as the sensors 30 and 31.

The door open position sensor 30 supplies an ON signal to the detection unit 23 of the individual control panel 20 when the door 12 is in the open position (hereinafter referred to as the "first specific state"), and an OFF signal in other states. The door closed position sensor 31 supplies an ON signal to the detection unit 23 when the door 12 is in the closed position (hereinafter referred to as the "second specific state"), and an OFF signal in other states.

The driving state sensor 32 supplies an ON signal to the detection unit 23 when there is no abnormality in the driving unit 14 (hereinafter referred to as the "third specific state"), and an OFF signal in other states. For example, the driving state sensor 32 may be an overload sensor that detects whether the driving unit 14 is in an overload state. As the overload sensor, a current sensor that detects the driving current of the motor 14m may be used, and when the driving current is within a predetermined range, it may detect that there is no abnormality. For example, the driving state sensor 32 may be a safety sensor for door entrapment detection that detects whether a passenger is in contact with the door end (tip) of the door 12. As a sensor for detecting door entrapment, a bumper switch (collision detection switch) may be used, and when the bumper switch is in the OFF state (when no passenger is in contact), it may detect that there is no abnormality. The driving state sensor 32 of this embodiment includes both an overload sensor and a door entrapment sensor.

The obstacle sensor 33 supplies an ON signal to the detection unit 23 when there is no obstacle in the path of the door 12 (hereinafter referred to as the "fourth specific state"), and an OFF signal in other states. The obstacle sensor 33 in this example has multiple photoelectric sensors, and detects that there is no abnormality when the multiple photoelectric sensors do not detect an obstacle.

The individual control panel 20 will be described with reference to Figure 3. Each functional block shown in Figure 3 and other figures can be realized in hardware terms by electronic elements and mechanical parts such as a computer CPU, and in software terms by a computer program, but here we have depicted a functional block realized by the cooperation of these. Therefore, it will be understood by those skilled in the art that these functional blocks can be realized in various ways by combining hardware and software.

The individual control panel 20 includes a wireless communication unit 21, a simulated state transmission unit 22, a detection unit 23, a specific state transmission unit 24, a self-holding circuit 25, and a door control unit 26.

(Wireless Communications Division)
The wireless communication unit 21 will be described with reference to Fig. 4. Fig. 4 is a circuit diagram showing the periphery of the simulated state transmission unit 22. In this diagram, the illustration of some of the platform door devices 100B is omitted. The platform door device 100 has a normal operation mode in which normal opening and closing operations are performed, and a stop mode. The stop mode is a mode in which normal operation is stopped, for example, to perform inspection, repair, maintenance, etc. of the platform door device 100. The simulated state transmission unit 22 performs a specified communication in the stop mode, and does not communicate in the normal operation mode.

The wireless communication unit 21 performs wireless communication with an external operation terminal 35. The wireless communication unit 21 accepts an external operation for switching the platform door device 100 from a normal operation mode to a stop mode. In this embodiment, the wireless communication unit 21 performs wireless communication with the operation terminal 35. In this specification, wireless communication includes not only wireless communication in the narrow sense, but also receiving a physical action propagated from the operation terminal 35. Examples of this physical action include those that use magnetism (e.g., a magnetic field), vibrations (e.g., sound waves), and electromagnetic waves (e.g., light, radio waves). These propagation forms include cases where the sender and receiver are in contact and cases where they are not in contact.

The wireless communication unit 21 is provided inside the door pocket 10 that houses the door 12. In the example of FIG. 2, the wireless communication unit 21 receives a signal from the operation terminal 35 on the vertical surface of the door pocket 10 of the door 12. At least a part of the surface of the door pocket 10 is made of a transparent material that transmits electromagnetic waves. The transparent material can be made of a non-metallic material such as resin. In the example of FIG. 2, the part of the door pocket 10 where the wireless communication unit 21 is provided and which faces the operation terminal 35 is made of a transparent material made of resin. In addition, the wireless communication unit 21 in FIG. 2 is covered with resin. Therefore, even if it is exposed to wind and rain, it is less likely to deteriorate and reliability is improved. In addition, it is possible to make the operation unit difficult to recognize by people other than the operator or worker, and it is easy to prevent troubles caused by passengers' mischief, etc. in advance. Since it is provided on a vertical surface, it is easy to prevent erroneous operation due to dropped objects or temporarily placed objects. Note that the vertical surface here includes not only a vertical surface in the narrow sense, but also one that can be visually recognized as a vertical surface.

In this embodiment, the operation terminal 35 has a magnet 35m that generates a magnetic field, and the wireless communication unit 21 receives the magnetic field (hereinafter referred to as a "magnetic field signal") generated by the magnet 35m of the operation terminal 35. In this example, the wireless communication unit 21 is a reed switch whose contacts open and close depending on the magnitude and direction of the magnetic field generated by the magnet 35m. In particular, the wireless communication unit 21 is a normally open reed switch whose contacts turn on (close) when it receives a magnetic field of a predetermined magnitude and direction.

(Simulated state transmission unit)
The simulated state transmission unit 22 will be described with reference to Fig. 4. When the wireless communication unit 21 receives a magnetic field signal from the operation terminal 35, the simulated state transmission unit 22 switches the platform door device 100 from the normal operation mode to the stop mode, and transmits a simulated state simulating a specific state to the general control panel 50 regardless of the detection result of the detection unit 23. In this specification, transmitting information to the receiving side includes enabling the receiving side to obtain information in addition to actively transmitting information. Therefore, transmitting the simulated state to the general control panel 50 includes enabling the general control panel 50 to obtain the simulated state. The simulated state will be described later.

The wireless communication unit 21, the simulated state transmission unit 22, and the self-holding circuit 25 are driven by power supplied from the power supply 55 provided in the general control panel 50 via the bus bar R and the bus bar S. A DC voltage of 24 V is supplied to the bus bar R, and the bus bar S is connected to GND. With this configuration, even if the power supply of the individual control panel 20 cannot be used due to a malfunction or the like, the wireless communication unit 21, the simulated state transmission unit 22, and the self-holding circuit 25 can be operated.

In this embodiment, the simulated state transmitting unit 22 includes a relay circuit 22r, a notification unit 27, and a release receiving unit 22p. The relay circuit 22r has a coil unit 22c and five normally open contact units P0, P1, P2, P3, and P4 that close when the coil unit 22c is energized. The contact units P1 to P4 function as bypass switches, which will be described later. Hereinafter, the contact units P1 to P4 are referred to as bypass switches P1 to P4. The contact unit P0 is connected in parallel to the wireless communication unit 21.

The notification unit 27 notifies the outside that the wireless communication unit 21 has received a signal from the operation terminal 35. In this example, the notification unit 27 includes a light-emitting element such as an LED connected in parallel to the coil unit 22c, and emits light when the relay circuit 22r is operating. In other words, the notification unit 27 notifies that a simulated state is being established. In the example of FIG. 2, the notification unit 27 is provided on the surface of the door pocket unit 10 that houses the door 12. As an example, the notification unit 27 is provided on the front of the door pocket unit 10. The release receiving unit 22p is a normally-closed reed switch that is connected in series to the wireless communication unit 21 and the coil unit 22c.

The self-holding circuit 25 of the simulated state transmission unit 22 keeps the relay circuit 22r operating. The self-holding circuit 25 of this embodiment includes a contact portion P0 of the relay circuit 22r. When the relay circuit 22r is activated, the contact portion P0 closes and continues to supply current from the power source 55 to the coil portion 22c. Specifically, when the wireless communication unit 21 is turned on (when the reed switch is closed), the coil portion 22c is energized by the power of the power source 55, and the contact portion P0 and the bypass switches P1 to P4 are closed. When the contact portion P0 is closed, even if the wireless communication unit 21 is turned off (even if the reed switch is opened), the coil portion 22c remains energized and the contact portion P0 remains closed. In this state, the platform door device 100 continues in the stop mode.

When the release receiver 22p receives a magnetic field of a specified magnitude and direction, it opens and cuts off the current to the coil 22c. When the current to the coil 22c is cut off, the contact P0 opens, the stop mode is released, and the mode switches to the normal operation mode.

When the wireless communication unit 21 receives a signal from the operation terminal 35, the simulated state transmission unit 22 transmits a simulated state that simulates a specific state to the general control panel 50, regardless of the detection result of the detection unit 23. In this example, the simulated state transmission unit 22 has bypass switches P1 to P4 provided in an electric circuit (specific state transmission unit 24) connected to the general control panel 50, and transmits a simulated state to the general control panel 50 by closing the bypass switches P1 to P4. The simulated state transmission unit 22 includes a relay circuit 22r that closes the bypass switches P1 to P4 in response to the wireless communication unit 21 receiving a magnetic field signal from the operation terminal 35. The operation of simulating a specific state using the bypass switches P1 to P4 will be described later.

(Detection unit)
The detection unit 23 will be described with reference to Figures 3 and 4. The detection unit 23 detects a specific state, which is at least one of a fully open state of the door 12, a fully closed state of the door 12, a state in which no obstacle exists on the movement path of the door 12, and a state in which there is no abnormality in the drive unit 14, based on signals supplied from the sensors 30 to 33. The specific states in this embodiment include a first specific state, a second specific state, a third specific state, and a fourth specific state. The detection unit 23 in this embodiment includes a first detection unit 23a, a second detection unit 23b, a third detection unit 23c, and a fourth detection unit 23d.

The first detection unit 23a detects a first specific state in response to an ON signal from the door open position sensor 30. The second detection unit 23b detects a second specific state in response to an ON signal from the door closed position sensor 31. The third detection unit 23c detects a third specific state in response to an ON signal from the drive state sensor 32. The fourth detection unit 23d detects a fourth specific state in response to an ON signal from the obstacle sensor 33.

(Specific Status Transmission Unit)
When the wireless communication unit 21 is not receiving a signal from the operation terminal 35 (in the case of the normal operation mode), the specific state transmission unit 24 transmits the specific state detected by the detection unit 23 to the general control panel 50. The specific state transmission unit 24 of this embodiment includes a first specific state transmission unit 24a, a second specific state transmission unit 24b, a third specific state transmission unit 24c, and a fourth specific state transmission unit 24d.

The first specific state transmission unit 24a is provided in each of the platform door device 100A and the other platform door device 100B. The first specific state transmission unit 24a transmits the first specific state detected by the first detection unit 23a so that the integrated control panel 50 can acquire it. The first specific state transmission unit 24a is an electric circuit connected to the state acquisition unit 56 of the integrated control panel 50. In this example, the first specific state transmission unit 24a has terminals X and Y that are turned off when the first detection unit 23a does not detect the first specific state and turned on when the first specific state is detected. The terminals X and Y are short-circuited when on and non-shorted when off. Each of the first specific state transmission units 24a is connected in series to form a loop 44a, and both ends of the loop 44a are connected to terminals A0 and A1 of the state acquisition unit 56.

In this specification, the short-circuit state includes not only the short-circuit state in the narrow sense, but also a state in which the electrical resistance is smaller than the non-shorted state within a distinguishable range, and the non-shorted state includes not only the open state, but also a state in which the electrical resistance is greater than the short-circuit state within a distinguishable range.

When all first detection units 23a detect the first specific state, all first specific state transmission units 24a are closed and loop 44a is in a short-circuited state. When loop 44a is in a short-circuited state, status acquisition unit 56 determines that all platform door devices are in the first specific state in which doors 12 are in the open position. When one or more of first detection units 23a do not detect the first specific state, loop 44a is in a non-shorted state. When loop 44a is in a non-shorted state, status acquisition unit 56 determines that one or more platform door devices are not in the first specific state.

The second specific state transmitting unit 24b, the third specific state transmitting unit 24c, and the fourth specific state transmitting unit 24d (hereinafter referred to as "other transmitting units") are configured similarly to the first specific state transmitting unit 24a, and are provided in each of the platform door device 100A and the other platform door device 100B. The other transmitting units are electrical circuits connected to the status acquisition unit 56 of the general control panel 50, and have terminals X and Y that change to a short-circuit state when a specific state is detected.

All second specific state transmission units 24b are connected in series to form a loop 44b. Both ends of the loop 44b are connected to terminals B0 and B1 of the status acquisition unit 56. When the loop 44b is in a short-circuit state, the status acquisition unit 56 determines that the second specific state is in which all doors 12 of the platform door device are in the closed position, and when the loop 44b is in a non-shorting state, it determines that one or more doors 12 are not in the closed position.

All third specific state transmission units 24c are connected in series to form a loop 44c. Both ends of the loop 44c are connected to terminals C0 and C1 of the status acquisition unit 56. When the loop 44c is in a short-circuit state, the status acquisition unit 56 determines that the drive units 14 of all platform door devices are in a third specific state with no abnormalities, and when the loop 44c is in a non-shorting state, it determines that one or more drive units 14 have an abnormality.

All fourth specific state transmission units 24d are connected in series to form a loop 44d. Both ends of the loop 44d are connected to terminals D0 and D1 of the status acquisition unit 56. When the loop 44d is in a short-circuited state, the status acquisition unit 56 determines that the fourth specific state is in which no obstacles exist in the path of the doors 12 of any of the platform door devices, and when the loop 44d is in a non-shorted state, it determines that an obstacle exists in one or more of the platform door devices.

The following describes the simulation of a specific state by bypass switches P1 to P4. Since a stopped platform door device 100A does not transmit a specific state, the other platform door device 100B also becomes inoperable. Therefore, in this embodiment, bypass switches P1 to P4 are provided that transmit simulated states that simulate the specific state of a stopped platform door device 100A.

When the bypass switch P1, which is connected in parallel to the terminals X and Y of the first specific state transmission unit 24a, is closed, a short circuit occurs between the terminals X and Y regardless of the state of the first specific state transmission unit 24a. As a result, the bypass switch P1 transmits a simulated state that simulates the first specific state to the terminals A0 and A1 of the state acquisition unit 56, and the state acquisition unit 56 determines whether the first specific state has been achieved based on information that includes this simulated state.

When the bypass switch P2, which is connected in parallel to the terminals X and Y of the second specific state transmission unit 24b, is closed, a short circuit occurs between the terminals X and Y regardless of the state of the second specific state transmission unit 24b. As a result, the bypass switch P2 transmits a simulated state that simulates the second specific state to the terminals B0 and B1 of the state acquisition unit 56, and the state acquisition unit 56 determines whether the second specific state has been achieved based on information that includes this simulated state.

When the bypass switch P3, which is connected in parallel to the terminals X and Y of the third specific state transmission unit 24c, is closed, a short circuit occurs between the terminals X and Y regardless of the state of the third specific state transmission unit 24c. As a result, the bypass switch P3 transmits a simulated state that simulates the third specific state to the terminals C0 and C1 of the state acquisition unit 56, and the state acquisition unit 56 determines whether the third specific state has been achieved based on information that includes this simulated state.

When the bypass switch P4, which is connected in parallel to the terminals X and Y of the fourth specific state transmission unit 24d, is closed, a short circuit occurs between the terminals X and Y regardless of the detection state of the fourth specific state transmission unit 24d. As a result, the bypass switch P4 transmits a simulated state that simulates the fourth specific state to the terminals D0 and D1 of the state acquisition unit 56, and the state acquisition unit 56 determines whether the fourth specific state has been achieved based on information that includes this simulated state.

In this way, the stopped platform door device 100A transmits a simulated state that simulates a specific state to the state acquisition unit 56. Therefore, the general control panel 50 can transmit an open command signal or a close command signal according to the specific state of the other platform door device 100B, and transmit a fully open confirmation signal or a fully closed confirmation signal. As a result, the other platform door device 100B can operate normally.

Next, the first control S110 in the stop mode will be described. FIG. 5 is a flowchart showing the first control S110 in the stop mode. In this control, one of the multiple platform door devices 100, 100A, is stopped for inspection, repair, maintenance, etc., and the other platform door device 100B is operated normally. The first control S110 is started when the operation terminal 35 is operated by an operator and the wireless communication unit 21 receives a magnetic field signal from the operation terminal 35 (step S111).

When the wireless communication unit 21 receives a magnetic field signal (Y in step S111), the wireless communication unit 21 closes, current flows through the coil portion 22c of the relay circuit 22r of the simulated state transmission unit 22, and the contact portion P0 and the bypass switches P1 to P4 close (step S112).

When the contact P0 is closed, a current flows through the coil 22c of the relay circuit 22r via the contact P0. This causes the simulated state transmission unit 22 to enter a self-holding state, and the contact P0 and the bypass switches P1 to P4 remain closed (step S113).

When the bypass switches P1 to P4 are closed, terminals X and Y of the first to fourth specific state transmission units 24a, 24b, 24c, and 24d are short-circuited, and the simulated state is transmitted to the general control panel 50 via the second transmission path 44 (step S114).

The simulated state transmission unit 22 continues to transmit the simulated state while in the self-holding state. While the simulated state is being transmitted, workers can carry out work such as inspection, repair, and maintenance of the platform door device 100A. When these tasks are completed, the workers perform an operation to release the self-holding state of the simulated state transmission unit 22 in order to switch from the stop mode to the normal operation mode.

When the operator operates the operation terminal 35 and the release receiving unit 22p receives a magnetic field signal from the operation terminal 35, the transmission of the simulated state is stopped (step S115). If the release receiving unit 22p does not receive a magnetic field signal (N in step S115), the process returns to the beginning of step S114 and repeats step S115.

When the release receiving unit 22p receives a magnetic field signal (Y in step S115), the release receiving unit 22p opens, the current in the coil unit 22c is interrupted, and the contact unit P0 and the bypass switches P1 to P4 open (step S116).

When the bypass switches P1 to P4 are opened, the terminals X and Y of the first to fourth specific state transmission units 24a, 24b, 24c, and 24d are opened, and the transmission of the simulated state stops (step S117).

When the transmission of the simulated state is stopped, the first control S110 in the stop mode ends and the normal operation mode is entered. If the wireless communication unit 21 does not receive a magnetic field signal (N in step S111), steps S112 to S117 are skipped. This first control S110 is merely an example, and the order of the steps may be changed, and some steps may be added, deleted, or modified.

Next, the second control S210 of the platform screen door system 1 in the stop mode will be described with reference to Figures 1 and 6. Figure 6 is a flowchart showing the second control S210 in the stop mode. In this control, when one platform door device 100A among the multiple platform door devices 100 is transmitting a simulated state, the other platform door device 100B is operated normally when the vehicle 52 reaches a predetermined position on the platform.

The second control S210 is started when the general control panel 50 receives an open request signal transmitted from the vehicle 52 by the driver (step S211).

When an open request signal is received (Y in step S211), the general control panel 50 supplies an open command signal to the individual control panel 20A and the other individual control panel 20B (step S212).

In response to this open command signal, the other individual control panel 20B opens the corresponding door 12 and transmits a first specific state (open confirmation signal) to the general control panel 50 (step S213). Specifically, the first specific state transmitting unit 24a of the other individual control panel 20B turns on, causing a short circuit between terminals X and Y.

In parallel with step S213, the individual control panel 20A transmits a first simulated state that simulates the first specific state (open confirmation signal) to the general control panel 50 (step S214). Specifically, the bypass switch P1 connected in parallel to the terminals X and Y of the first specific state transmission unit 24a of the individual control panel 20A is closed, thereby shorting the terminals X and Y.

When the first specific state and the first simulated state are received, the general control panel 50 determines that all doors 12 are in the open position and sends a full-open confirmation signal to the vehicle 52 (step S215). Upon receiving this full-open confirmation signal, the driver of the vehicle 52 opens the vehicle door.

Specifically, the terminals X and Y of the first specific state transmission unit 24a of the individual control panel 20A and the terminals X and Y of the first specific state transmission unit 24a of the other individual control panel 20B are connected in series to form a loop 44a (see also FIG. 4). Both ends of this loop 44a are connected to terminals A0 and A1 of the status acquisition unit 56. As described above, when all terminals X and Y in the loop 44a are short-circuited, the loop 44a is in a short-circuited state, and the status acquisition unit 56 determines that the doors 12 of all platform door devices are in the open position. As a result, the general control panel 50 sends a full-open confirmation signal to the vehicle 52.

When the full open confirmation signal is sent, the second control S210 in the stop mode ends. If the general control panel 50 does not receive an open request signal (N in step S211), S212 to S215 are skipped. This second control S210 is merely an example, and the order of the steps may be changed, and some steps may be added, deleted, or modified.

Next, the third control S310 of the platform screen door system 1 in the stop mode will be described with reference to Figures 1 and 7. Figure 7 is a flowchart showing the third control S310 in the stop mode. In this control, when one platform door device 100A among the multiple platform door devices 100 is transmitting a simulated state, the other platform door device 100B is operated normally when the train 52 departs from the platform.

The third control S310 is started when the general control panel 50 receives a close request signal transmitted from the vehicle 52 by the driver (step S311).

When a close request signal is received (Y in step S311), the general control panel 50 supplies a close command signal to the individual control panel 20A and the other individual control panel 20B (step S312).

In response to this close command signal, the other individual control panel 20B closes the corresponding door 12 and transmits a second specific state (close confirmation signal) to the general control panel 50 (step S313). Specifically, the second specific state transmission unit 24b of the other individual control panel 20B turns on, causing a short circuit between terminals X and Y.

In parallel with step S313, the individual control panel 20A transmits a second simulated state that simulates the second specific state (closed confirmation signal) to the general control panel 50 (step S314). Specifically, the bypass switch P2 connected in parallel to the terminals X and Y of the second specific state transmission unit 24b of the individual control panel 20A is closed, thereby shorting the terminals X and Y.

When the second specific state and the second simulated state are received, the general control panel 50 determines that all doors 12 are in the closed position and sends a full-close confirmation signal to the vehicle 52 (step S315). Upon receiving this full-close confirmation signal, the driver of the vehicle 52 closes the vehicle door.

Specifically, the terminals X and Y of the second specific state transmission unit 24b of the individual control panel 20A and the terminals X and Y of the second specific state transmission unit 24b of the other individual control panel 20B are connected in series to form a loop 44b (see also FIG. 4). Both ends of this loop 44b are connected to the terminals B0 and B1 of the status acquisition unit 56. As described above, when all terminals X and Y in the loop 44b are short-circuited, the loop 44b is in a short-circuited state, and the status acquisition unit 56 determines that the doors 12 of all platform door devices are in the closed position. As a result, the general control panel 50 sends a full-close confirmation signal to the vehicle 52.

When the full closure confirmation signal is sent, the third control S310 in the stop mode ends. If the general control panel 50 does not receive a close request signal (N in step S311), S312 to S315 are skipped. This third control S310 is merely an example, and the order of the steps may be changed, and some steps may be added, deleted, or modified.

Next, the control based on the bypass switch P3 will be explained. When loop 44c is in a non-shorted state based on the detection result of the drive status sensor 32, the status acquisition unit 56 of the general control panel 50 determines that there is an abnormality in the drive unit 14 of one of the multiple platform door devices 100. In this case, the general control panel 50 stops the operation of each drive unit 14 and displays on the station office display device 60 and the general command room display device 62 that there is an abnormality in the drive unit 14. Workers carry out recovery work based on this display.

If the bypass switch P3 is not provided, when one platform door device 100A is stopped, the loop 44c is not short-circuited and the third specific state is not established, so the other platform door device 100B is also inoperable. In this embodiment, when one platform door device 100A is in the stop mode, the bypass switch P3 shorts the terminals X and Y of the third specific state transmission unit 24c, so that the loop 44c is short-circuited and the third specific state is established, and the state acquisition unit 56 determines that there are no abnormalities in all the drive units 14 and operates the other platform door device 100B normally.

Next, the control based on the bypass switch P4 will be explained. When loop 44d is in a non-shorted state based on the detection result of obstacle sensor 33, status acquisition unit 56 of the general control panel 50 determines that an obstacle is present on the movement path of any of the multiple platform door devices 100. In this case, the general control panel 50 drives each door 12 in the opening direction and causes the station office display device 60 and the general command room display device 62 to display the presence of an obstacle. Workers carry out recovery work based on this display.

If the bypass switch P4 is not provided, when one platform door device 100A is stopped, the loop 44d is not short-circuited and the fourth specific state is not established, so the other platform door device 100B is also inoperable. In this embodiment, when one platform door device 100A is in the stop mode, the bypass switch P4 shorts the terminals X and Y of the fourth specific state transmission unit 24d, so that the loop 44d is short-circuited and the fourth specific state is established, and the state acquisition unit 56 determines that there are no obstacles on any of the travel routes and operates the other platform door device 100B normally.

The features of the platform door device 100 of this embodiment will be described. The platform door device 100 includes a drive unit 14 that drives the door 12 that constitutes the platform entrance and exit to open and close, a detection unit 23 that detects a specific state that is at least one of a fully open state of the door 12, a fully closed state of the door 12, a state in which there is no obstacle on the movement path of the door 12, and a state in which there is no abnormality in the drive unit 14, a wireless communication unit 21 that wirelessly communicates with an external operation terminal 35, a specific state transmission unit 24 that transmits the specific state detected by the detection unit 23 to the general control panel 50 when the wireless communication unit 21 does not receive a signal from the operation terminal 35, and a simulated state transmission unit 22 that transmits a simulated state that simulates the specific state to the general control panel 50 when the wireless communication unit 21 receives a signal from the operation terminal 35, regardless of the detection result of the detection unit 23.

With this configuration, even if one platform door device 100A stops due to a malfunction or inspection, the platform door device 100A transmits a simulated state that simulates a specific state to the general control panel 50, so that the other platform door device 100B linked to this device can be used.

In this embodiment, the simulated state transmission unit 22 transmits the simulated state to the general control panel 50 by turning on the bypass switches P1 to P4 provided in the electric circuit connected to the general control panel 50, and the simulated state transmission unit 22 includes a relay circuit 22r that turns on the bypass switches P1 to P4 in response to the wireless communication unit 21 receiving a signal from the operation terminal 35.

In this case, the bypass switches P1 to P4 are made conductive by the relay circuit 22r, so the simulated state transmission unit 22 can be realized with a simple configuration. The use of the relay circuit 22r makes it possible to prevent malfunctions due to radiation in the atmosphere.

In this embodiment, the simulated state transmission unit 22 is equipped with a self-holding circuit 25 that keeps the relay circuit 22r operating, and the self-holding circuit 25 is supplied with power from the general control panel 50. In this case, even if the power supply of the individual control panel 20 cannot be used due to a malfunction or the like, the self-holding circuit 25 can be operated with power from the general control panel 50.

In this embodiment, the wireless communication unit 21 is covered with resin and detects the operation of the operation terminal 35 on a vertical surface. In this case, even if the platform door device 100 is exposed to wind and rain, it is possible to prevent rainwater from entering the wireless communication unit 21. In addition, since it is provided on a vertical surface, it is possible to prevent erroneous operation due to fallen objects or temporarily placed objects. In addition, since the wireless communication unit 21 is provided inside the door pocket section 10 that stores the door 12, it is possible to prevent rainwater from entering the wireless communication unit 21. In addition, since at least a portion of the surface of the door pocket section 10 is made of a transparent material that allows electromagnetic waves to pass through, communication errors in the wireless communication between the wireless communication unit 21 and the operation terminal 35 can be reduced.

In this embodiment, the wireless communication unit 21 is equipped with an alarm unit 27 that notifies the outside that it has received a signal from the operation terminal 35. In this case, it is easy to determine that the platform door device 100 is in the stop mode. In addition, since the alarm unit 27 is provided on the surface of the door pocket portion 10 that houses the door 12, it is easily visible to the operator and the crew. In addition, since the alarm unit 27 notifies that the simulation state is in place, the operator and the crew can easily recognize that the platform door device 100 is in the simulation state.

The second and third embodiments of the present invention will be described below. In the drawings and description of the second and third embodiments, the same components and members as those of the first embodiment will be given the same reference numerals. Explanations that overlap with the first embodiment will be omitted as appropriate, and the description will focus on the configurations that differ from the first embodiment.

[Second embodiment]
The second embodiment of the present invention is a control method for the platform door device 100. This control method includes a detection step of detecting a specific state, which is at least one of a fully open state of the door 12 driven to open and close at the platform entrance, a fully closed state of the door 12, a state in which there is no obstacle on the movement path of the door 12, and a state in which there is no abnormality in the drive unit 14 that drives the door 12, a step of transmitting the specific state detected in the detection step to the general control panel 50 when the wireless communication unit 21 that wirelessly communicates with the external operation terminal 35 does not receive a signal from the operation terminal 35, and a step of transmitting a simulated state that simulates the specific state to the general control panel 50 when the wireless communication unit 21 receives a signal from the operation terminal 35, regardless of the detection result of the detection step. According to this embodiment, the same action and effect as the first embodiment are achieved.

[Third embodiment]
A third embodiment of the present invention is a control program (computer program) for the platform door device 100. The control program of the third embodiment causes a computer to execute a detection step of detecting a specific state which is at least one of a fully open state of the door 12 driven to open and close at the platform entrance, a fully closed state of the door 12, a state in which no obstacle exists on the movement path of the door 12, and a state in which there is no abnormality in the drive unit 14 that drives the door 12, a step of transmitting the specific state detected in the detection step to the general control panel 50 if the wireless communication unit 21 that wirelessly communicates with an external operation terminal 35 does not receive a signal from the operation terminal 35, and a step of transmitting a simulated state that simulates the specific state to the general control panel 50 if the wireless communication unit 21 receives a signal from the operation terminal 35, regardless of the detection result of the detection step.

The functions of the control program of the third embodiment may be installed in the storage (not shown) of the platform door device 100 as an application program in which multiple modules corresponding to the functional blocks of the platform door device 100 are implemented. This control program may be read into the main memory of a processor (e.g., a CPU) of a computer constituting the individual control panel 20 of the platform door device 100 and executed.

This embodiment provides the same effects and advantages as the first embodiment.

Above, examples of embodiments of the present invention have been described in detail. All of the above-mentioned embodiments merely show specific examples of implementing the present invention. The contents of the embodiments do not limit the technical scope of the present invention, and many design changes such as changing, adding, or deleting components are possible within the scope of the idea of the invention defined in the claims. In the above-mentioned embodiments, the contents for which such design changes are possible are explained with the notation "in the embodiment" or "in the embodiment", but this does not mean that design changes are not permitted for contents without such notation.

[Modification]
The following describes the modified examples. In the drawings and description of the modified examples, the same components and members as those in the embodiment are denoted by the same reference numerals. Explanations that overlap with the embodiment will be omitted as appropriate, and the description will focus on the configurations that differ from the first embodiment.

In the description of the embodiment, an example has been shown in which the specific state transmission unit 24 transmits a specific state from two terminals that are short-circuited when on and non-shorted when off, but the present invention is not limited to this. The specific state transmission unit may be anything that can transmit a specific state to the general control panel. For example, it may be an electronic circuit that supplies a logic signal to the general control panel.

In the description of the embodiment, an example was given in which the simulated state transmission unit 22 is a bypass switch made up of relay contacts, but the present invention is not limited to this. For example, the bypass switch may be a semiconductor switch, and the simulated state transmission unit may be an electronic circuit that supplies a logic signal to the general control panel.

In the description of the embodiment, an example has been shown in which the simulated state transmitting unit 22 is connected to the output terminal of the specific state transmitting unit 24 and transmits the state via the second transmission path 44, but the present invention is not limited to this. For example, the simulated state transmitting unit may transmit the state via a transmission means other than the second transmission path, or may not be connected to the specific state transmitting unit.

In the description of the embodiment, an example was shown in which the release receiving unit 22p is a reed switch that opens and closes in response to the magnetic field of the operation terminal 35, but the release receiving unit 22p may also be an electronic circuit that can release the wireless communication unit 21 in response to a known operation method.

In the description of the embodiment, an example has been shown in which the power to drive the simulated state transmission unit 22 is supplied from the power supply 55 provided in the general control panel 50, but the present invention is not limited to this. The power supplied to the simulated state transmission unit 22 may be supplied from multiple power supplies including the power supply 55, may be supplied from an external power supply other than the power supply 55, or may be supplied from a power supply such as a battery provided in the individual control panel 20.

The above-mentioned modified example provides the same effects as the first embodiment.

Any combination of the above-described embodiments and modifications is also useful as an embodiment of the present invention. A new embodiment resulting from the combination has the combined effects of each of the combined embodiments and modifications.

1 Platform door system, P1-P4 Bypass switches, 12 Door, 14 Drive unit, 20 Individual control panel, 21 Wireless communication unit, 22 Simulated state transmission unit, 22r Relay circuit, 23 Detection unit, 24 Specific state transmission unit, 25 Self-holding circuit, 26 Door control unit, 27 Notification unit, 35 Operation terminal, 50 General control panel, 55 Power supply.

Claims (11)

A platform door device,
A drive unit that drives the opening and closing of doors that constitute the platform entrance;
a detection unit that detects a specific state which is at least one of a fully open state of the door, a fully closed state of the door, a state in which no obstacle exists on a moving path of the door, and a state in which no abnormality exists in the drive unit;
A wireless communication unit that wirelessly communicates with an external operation terminal that outputs a signal for switching to a mode that stops normal operation of the platform door device ;
a specific state transmission unit that transmits the specific state detected by the detection unit to an integrated control panel that controls opening and closing of a platform door device installed on the platform when the wireless communication unit does not receive the signal from the operation terminal;
a simulated state transmission unit that transmits a simulated state that simulates the specific state to the general control panel when the wireless communication unit receives the signal from the operation terminal, regardless of the detection result of the detection unit;
A platform door device equipped with this device. The platform door device according to claim 1 , wherein the wireless communication unit is a reed switch. The simulated state transmission unit transmits the simulated state to the general control panel by conducting a bypass switch provided in an electric circuit connected to the general control panel,
the simulated state transmission unit includes a relay circuit that turns on the bypass switch in response to the wireless communication unit receiving the signal from the operation terminal,
A platform door device as described in claim 1 or 2. The platform door device according to claim 3, wherein the simulated state transmitting unit is provided with a self-holding circuit that keeps the relay circuit operating. The platform door device according to claim 4, wherein the self-holding circuit is supplied with power from the general control panel. The wireless communication unit is provided inside a door pocket that houses the door,
The platform door device according to any one of claims 1 to 5, wherein at least a portion of the surface of the door pocket portion is made of a transparent material through which electromagnetic waves can pass. The platform door device according to any one of claims 1 to 6, further comprising a notification unit that notifies the outside that the wireless communication unit has received a signal from the operation terminal. The platform door device according to claim 7, wherein the notification unit is provided on a surface of a door pocket that houses the door. The platform door device according to claim 7 or 8, wherein the notification unit notifies that the simulated state is present. A method for controlling a platform door device, comprising:
a detection step of detecting a specific state which is at least one of a fully open state of a door that is driven to open and close at a platform entrance, a fully closed state of the door, a state in which no obstacle exists on a moving path of the door, and a state in which there is no abnormality in a drive unit that drives the door;
a step of transmitting the specific state detected in the detection step to an integrated control panel when a wireless communication unit that wirelessly communicates with an external operation terminal that outputs a signal for switching to a mode that stops normal operation of the platform door device does not receive the signal from the operation terminal;
When the wireless communication unit receives the signal from the operation terminal, regardless of the detection result of the detection step, transmitting a simulated state that simulates the specific state to the general control panel;
A method for controlling a platform door device comprising: A control program for a platform door device,
a detection step of detecting a specific state which is at least one of a fully open state of a door that is driven to open and close at a platform entrance, a fully closed state of the door, a state in which no obstacle exists on a moving path of the door, and a state in which there is no abnormality in a drive unit that drives the door;
a step of transmitting the specific state detected in the detection step to an integrated control panel when a wireless communication unit that wirelessly communicates with an external operation terminal that outputs a signal for switching to a mode that stops normal operation of the platform door device does not receive the signal from the operation terminal;
When the wireless communication unit receives the signal from the operation terminal, regardless of the detection result of the detection step, transmitting a simulated state that simulates the specific state to the general control panel;
A control program for the platform door device to cause a computer to execute the above.

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