JP4368750B2 - Platform gate system - Google Patents

Description

  The present invention relates to a platform gate system including a plurality of movable platform gates that are self-propelled in response to changes in the position and size of a train gate.

  Patent Document 1 discloses a platform gate system (home door system). As shown in FIGS. 4 and 5 of Patent Document 1, the platform door system includes a plurality of movable fences and a fixed fence that can accommodate the movable fences. And, according to the type of vehicle, the position of the door on the vehicle side is variously changed, and the movable fence to be moved is changed so that the open position of the door part (gate open position) can be changed. Each movable fence is provided with a driving device and various sensors for driving.

The home door system of Patent Document 1 is not a type that moves a door bag body that supports a door body along the platform. However, Patent Document 1 is applied to a door-gate body movable type platform gate system, and a plurality of door-bag bodies that support the door body are provided, and a driving device and sensors are provided in each of the plurality of door-bag bodies, and the door body is attached to the door pocket. It can be considered that the gate can be opened and closed by advancing / withdrawing from the body, and the opening position of the gate can be changed by self-propelling the door bag by a driving device.
JP 7-108923 A (paragraph numbers 0003 and 0010)

  However, if the configuration of Patent Document 1 is simply applied to a door gate movable type platform gate as it is, the door body may be damaged due to a malfunction of the sensors or a control program runaway in the control device of the door bag. There is a possibility of overrun, running out of range and colliding with other door pockets to break.

  Moreover, when a power failure occurs for some reason, Patent Document 1 does not mention at all how the movable fence returns to normal control after the recovery from the power failure.

  The present invention has been made in view of the above circumstances, and its purpose is to detect and prevent overrun of the door bag body with a simple configuration and to return to a fixed position in the case of recovery from a power failure or the like. It is an object of the present invention to provide a platform gate system capable of automatically and reliably performing an operation and quickly returning to normal control.

Means and effects for solving the problems

  The problems to be solved by the present invention are as described above. Next, means for solving the problems and the effects thereof will be described.

(First invention)
The platform gate system of the first invention is configured as follows. A plurality of door pockets that support the door body are provided, and each door pocket body is configured to be capable of self-propelled along the platform, and is opened and closed by moving the door body forward / backward with respect to the door bag body. The platform is provided with a long and narrow distance detecting piece across the traveling range of the plurality of door pockets, and the distance detecting piece is repeatedly formed with irregularities at equal pitches along the longitudinal direction. An origin detection piece is provided on the platform corresponding to the origin position set for each of the plurality of door pockets. Further, every other elongated area detecting piece is provided on the platform between the respective origin positions. The door pocket body is provided with a distance detection sensor capable of detecting the unevenness of the distance detection piece, an origin detection sensor capable of detecting the origin detection piece, and an area detection sensor capable of detecting the area detection piece. (First invention).

  According to this means, the stop position of the door bag body (travel distance from the origin position of the door bag body) can be precisely and accurately controlled by counting the detection of the unevenness of the distance detection piece by the distance detection sensor when the gate is opened. Even when the gate opening position needs to be moved by a small amount corresponding to the position of the entrance / exit, the door bag body can be moved to an appropriate position with a simple configuration. Further, by checking the presence / absence of the region detection piece with the region detection sensor, it is possible to automatically recognize whether the door bag body is on one side or the other side from the origin position. Furthermore, by detecting the origin detection piece with the origin detection sensor, the return to the origin position is ensured, and the distance detection error by the distance detection sensor can be reset by detecting the origin.

(Second invention)
In the first invention, the following configuration is preferable. A control device is provided for each of the door pockets. When the door pocket body is located on the side where the region detection piece is installed from the origin position and is traveling in a direction away from the origin position, the control device detects the region detection sensor. When the detection piece is no longer detected, it is determined as overrun. In addition, when the door pocket body is located on the side where the area detection piece is not installed from the origin position and is traveling away from the origin position, the control device detects the area. When a piece is detected, it is determined as overrun (second invention).

  According to this means, the traveling range of each door bag body is determined from the origin position of the door bag body adjacent on one side to the origin position of the door bag body adjacent on the other side, and the presence or absence of the region detection piece is cut at the boundary. By utilizing the change, it can be determined as an overrun by detecting it with the area detection sensor. Thereby, the overrun of the door pocket body can be reliably detected with a simple configuration and control.

(Third invention)
In the first or second invention, the following configuration is preferable. A control device is provided for each of the door pockets. When the power is turned on, the control device checks the presence / absence of a region detection piece by a region detection sensor and determines the traveling direction of the door pocket based on the detection result. Further, the control device controls the door pocket body to travel in the determined direction until the origin detection sensor detects the origin detection piece (third invention).

  With this configuration, when the power is turned on, the control device checks whether the position of the door bag body is one side or the other side of the origin position by the area detection sensor, and the direction of the door bag body travels according to the result. By doing so, it can be automatically determined whether the door bag can be returned to the origin position. Then, the door bag body can be reliably returned to the predetermined origin position by running the door bag body in the determined direction until the origin detection sensor detects the origin detection piece. This configuration is excellent in that even if the control device cannot recognize the position of the door pocket due to a power failure or the like, it can return to the origin position without any problem.

(Fourth invention)
In the first to third aspects of the invention, it is preferable that the distance detection piece, the origin detection piece, and the region detection piece are installed in a groove provided in the platform along the longitudinal direction (fourth invention). ).

  With this configuration, each detection piece can be prevented from protruding on the platform and obstructing the passage of passengers. In addition, since the detection piece is inside the groove, it is difficult for the passengers to see and the clean appearance of the platform can be easily realized.

(Fifth invention)
In the first to fourth inventions, it is preferable that the distance detection sensor, the origin detection sensor, and the area detection sensor are configured as proximity sensors (fifth invention).

  With this configuration, non-contact detection is realized, and the life of the sensor and the detection piece can be extended.

(Sixth invention)
In the first to fifth inventions, it is preferable that the distance detection sensor, the origin detection sensor, and the region detection sensor are provided in a lower portion of the door pocket body (sixth invention).

  With this configuration, each detection sensor can be installed in a place where it is difficult for passengers to see, and the appearance of the door pocket can be improved.

  Next, embodiments of the invention will be described. FIG. 1 is a block diagram showing an electrical configuration of a platform gate constituting the platform gate system of the present invention, FIG. 2 is a schematic front view showing three gates of No. 1 to No. 3 in a closed state, and FIG. It is a partial cross section schematic diagram which shows a structure. 4 is a schematic front view showing a state where the entrance / exit part is opened, and FIG. 5 is a schematic front view showing a state where the part of the entrance / exit having a position different from that in FIG. 4 is opened.

  The platform gate system 100 includes a plurality of self-propelled movable platform gates 1 as shown in FIG. FIG. 1 shows only one platform gate 1. In FIG. 1, the platform gate 1 includes a door bag body 10 that can travel along the platform 2, door bodies 12 and 12 that are slidably supported by the door bag body 10 through an appropriate sliding mechanism (not shown), It has. Further, the door body 10 is provided with a door body opening / closing motor 15 as a door body opening / closing drive means. The door body opening / closing motor 15 allows the door bodies 12 and 12 to be housed in the door body 10 to open the gate. The door bodies 12 and 12 can be advanced from the door bag body 10 to close the gate.

  A driving wheel 17 and a driven wheel 18 that are rotatable on a rail (not shown) laid along the platform 2 are rotatably supported at a lower portion of the door bag body 10. Further, the door bag body 10 is provided with a travel motor 19 so that the drive wheel 17 can be rotated. As a result, the door bag 10 can be self-propelled on the rail.

  The door body 10 is provided with a control device 16, and the door body opening / closing motor 15 and the traveling motor 19 are electrically connected to the control device 16. Further, the door bag 10 is provided with a receiving antenna 20 for receiving a control signal from a central control device 110 described later. The receiving antenna 20 is connected to the control device 16 via a receiving unit 21 as an interface. It is connected to the. The control device 16 is configured as a known microcomputer, and includes a CPU as an arithmetic device and ROM, RAM, EPROM, etc. as storage devices.

  A groove 3 having an appropriate depth is formed along the longitudinal direction of the platform 2, and a power supply trolley 22 is installed inside the groove 3. On the other hand, a power supply brush 23 is provided at a lower portion of the door bag body 10, and the door bag body 10 can travel along the platform 2 while maintaining a contact state between the power supply brush 23 and the power supply trolley 22. Electric power necessary for the door body opening / closing motor 15, the traveling motor 19, the control device 16, and the like is supplied through the power supply trolley 22 and the power supply brush 23.

  In addition, three sensors, that is, a distance detection sensor 31, an origin detection sensor 32, and an area detection sensor 33 are provided in the lower portion of the door pocket body 10. These sensors 31 to 33 are electrically connected to the control device 16. Details of these sensors will be described later.

  A central control device 110 for centrally controlling the plurality of platform gates 1 is provided at an appropriate position of the platform 2. A transmission antenna 112 is connected to the central controller 110 via a transmission unit 111 as an interface. With this configuration, when the train arrives at the platform 2, the central controller 110 transmits a control signal (an opening command signal described later) to each platform gate 1, and runs each platform gate 1 to the side of the entrance / exit. While moving to a position, it is comprised so that the door body 12 corresponding to the entrance / exit may be opened.

  Next, the detection configuration of the above-described three sensors 31 to 33 will be described. Although not shown in FIG. 1, as shown in FIGS. 2 and 3, three detection pieces 41 to 43 are provided inside the aforementioned groove 3 of the platform 2.

  FIG. 2 shows three platform gates 1. Each of the platform gates 1 is assigned a number (# 1 to # 3) and a coordinate system x1 to x3 is defined. The allocation information indicating what number is stored is stored in the aforementioned EPROM or the like provided in the aforementioned control device 16 of each platform gate 1. The coordinate systems x1 to x3 are provided along the longitudinal direction of the platform 2, and are determined so that the right side in FIG. 2 is positive and the left side is negative from the predetermined origin for each platform gate 1. .

  A distance detection piece 41 is provided inside the groove 3 formed in the platform 2. The distance detection piece 41 is configured as an elongated metal plate, and is installed along the longitudinal direction of the platform 2 so as to straddle the traveling range of the three platform gates 1.

  As shown in FIG. 2, the distance detecting piece 41 is formed by repeating irregularities along the longitudinal direction at an equal pitch. Specifically, the distance detecting piece 41 is provided with holes repeatedly at equal intervals to form a concave portion, and a convex portion is formed between the holes. And the said distance detection sensor 31 provided in the door pocket body 10 side of each platform gate 1 is provided as a proximity sensor, and is provided so that the said distance detection piece 41 may be opposed. And the distance detection sensor 31 senses the unevenness | corrugation of the distance detection piece 41, and switches ON / OFF.

  An origin detection piece 42 is provided in the groove 3. The origin detection piece 42 is formed in a dog shape and is provided at the origin position (x1 = 0, x2 = 0, x3 = 0) of each platform gate 1. The origin detection sensor 32 provided in the door pocket 10 of each platform gate 1 is a proximity sensor and is provided so as to face the origin detection piece 42. With this configuration, when the door bag 10 is located at the above-described origin and the origin detection sensor 32 faces the origin detection piece 42, the origin detection sensor 32 is turned on.

  Further, an area detection piece 43 is provided inside the groove 3. The region detection piece 43 has an elongated shape. That is, one end of each region detection piece 43 is located at the origin position of the gate 1 and the other end is located at the origin position of the gate 1 adjacent thereto. And every other area detection piece 43 is provided between the origin positions of the platform gates 1. For example, as shown in FIG. 2, the area detection piece 43 is not installed between the first and second origin positions, whereas the area detection piece 43 is installed between the second and third origin positions. . And the area | region detection sensor 33 provided in the door pocket 10 of each platform gate 1 is a proximity sensor, and is provided so that the said area | region detection piece 43 can be opposed.

  With this configuration, for example, in the platform gate 1 of No. 2, when the door bag body 10 is moved from its origin to the right side of the drawing in FIG. 2 (x2> 0), the area detection sensor 33 detects the area detection piece 43. And it turns ON. On the other hand, when the door bag 10 is moved from the origin to the left side of the drawing in FIG. 2 (x2 <0), the area detection sensor 33 does not detect the area detection piece 43 and is turned OFF. In the other platform gates 1 (No. 1 and No. 3), on the contrary, the area detection sensor is turned off when the door bag body 10 is on the right side of the sheet of FIG. 2 from the origin, and turned on when it is on the left side.

  Next, the control configuration of the platform gate 1 will be described. When the train is not stopped on the platform 2, each platform gate 1 is in the state shown in FIG. 2. That is, the first to third platform gates 1 make the door pocket 10 stationary at the origin position (x1 = 0, x2 = 0, x3 = 0). Further, in this state, each gate 1 is in a state where the door body 12 is advanced from the door bag body 10 and closed, and the space between the door bag bodies 10 is closed by the door body 12 so that passengers cannot pass. ing.

  When the train arrives at the platform 2 from the state of FIG. 2, the central controller 110 shown in FIG. 1 moves each door bag body 10 to the side of the entrance / exit of the train, and the door body at the entrance / exit position. A control signal (open command signal) is transmitted to each platform gate 1 so as to open 12. The position of the train entrance / exit is recognized in advance on the central controller 110 side.

  For example, in the state of FIG. 2, the central controller 110 gives an instruction to the first gate 1 that “the door pocket is stationary, the left door is kept closed, and the right door is opened by a distance 2”. With regard to gate 1 of No. 2, an instruction to “move the door to the right by distance 4, open the left door by distance 3 and open the right door by distance 3” A command to the effect that “the left door is opened by a distance 1 and the right door is kept closed” is transmitted via the transmission antenna 112. The “distance n” means the pitch of n projections and depressions of the distance detection piece 41 described above.

  The first to third platform gates 1 that have received the opening command open the right door 12 by a distance 2 at the first gate 1 according to the content of the command, and the door 10 at the second gate 1. Moves to the right by a distance of 4 and opens the left and right doors by a distance of 3 and opens the left door body 12 by a distance of 1 at the third gate 1. As a result, as shown in FIG. 4, the part corresponding to the train entrance / exit D can be opened, and a passenger can be boarded / exited.

  The central control device 110 sends a close command to each platform gate 1 almost at the same time when the passengers get on and off and the door (not shown) of the train entrance D is closed. Then, each gate 1 returns to the origin position (when it is already at the origin position, the position is maintained), and when each door 12 or 12 is open, it is closed. As a result, it returns to the closed state of FIG.

  Next, it is assumed that a train with a different position of the entrance / exit D has arrived at the platform 2. In this case, the central controller 110, for example, for the first gate 1 from the state of FIG. 2 "the door bag moves to the left by the distance 2, the left door opens by the distance 2, and the right door opens by the distance 2". The gate command for gate 2 is “The door body moves to the left by a distance of 6, the left door opens by a distance of 2, and the right door opens by a distance of 1.” For 1, a command that “the door bag body is to be stationary, the left door is opened by a distance of 2 and the right door is to be closed” is transmitted via the transmission antenna 112. As shown in FIG. 5, each gate 1 moves the door bag 10 and opens the doors 12, 12 according to the command, thereby opening the gate at a position corresponding to the entrance D different from the position shown in FIG. 4. Can be opened.

  Next, control of each platform gate 1 will be described. Control programs as shown in FIGS. 6 to 8 are stored in the ROM of the control device 16 of each platform gate 1. Hereinafter, the control in the second gate 1 will be described as a representative, and the gate opening process in FIG. 6 will be described first. FIG. 6 is a flowchart showing gate opening control.

  In FIG. 6, the control device 16 of the second platform gate 1 waits in step S <b> 101 until the opening command from the central control device 110 is received via the receiving antenna 20. This time, the opening command that “the door bag moves to the right by a distance of 4 and the left door opens by a distance of 3 and the right door opens by a distance of 3” (ie, transition from the state of FIG. 2 to the state of FIG. 4) It is assumed that the central control device 110 has transmitted to the second platform gate 1.

  When the opening command is received, the control device 16 of the second platform gate 1 analyzes the content of the command in step S102 and determines whether or not the left door 12 should be opened. In this command, the left door should be opened by a distance of 3, so the left door 12 is opened by a distance of 3 in step S103. Similarly, in step S104, it is determined whether or not the right door 12 should be opened. Since the right door should also be opened by the distance 3 in this command, the right door 12 is opened by the distance 3 in step S105.

  In step S <b> 106, the control device 16 further analyzes the opening command and determines how to move the door bag 10. In this command, since the door bag body should move right by a distance of 4, the door bag body 10 starts to travel to the right in step S110.

  The RAM 16 of the control device 16 stores the coordinate x2 of the current position of the door bag 10 as a coordinate variable, and the value of this coordinate variable is set to zero at the origin position of the door bag 10 shown in FIG. . When the door bag 10 is moved to the right in step S110, the state of the distance detection sensor 31 is monitored as needed, and the content of the coordinate variable x2 is incremented each time the distance detection sensor 31 is switched from OFF to ON. It is configured as follows.

  In the above-described opening command, the door bag body is moved to the right by the distance 4; therefore, if the value of the coordinate variable x2 is 4, the specified position has been reached. In step S111, the value of the coordinate variable x2 is determined. If the value of x2 is less than 4, the process returns to step S110 and the door bag 10 continues to travel to the right. When the coordinate variable x2 becomes 4 in step S111 (when the door bag 10 reaches the position instructed by the opening command), the travel of the door bag 10 is stopped in step S112. Thus, the second gate 1 is in the state shown in FIG.

  If an instruction to move to the left is instructed by the opening command, the processing of steps S107 to S109 is performed instead of the above processing. In the process of step S107, the door bag 10 is moved to the left instead of the right, and the content of the coordinate variable x2 is decremented from zero each time the distance detection sensor 31 is switched from OFF to ON. This is the same as the processing in steps S110 to S112. If the door command indicates that the door bag 10 should be stationary, the movement process of steps S107 to S112 is skipped.

  Here, the opening process of the left door body 12 in steps S102 to S103, the opening process of the right door body 12 in steps S104 to S105, and the movement process of the door bag body 10 in steps S106 to S112 are performed simultaneously. Done in parallel. Accordingly, the retracting operation of the left and right door bodies 12 and the movement of the door pocket body 10 are performed simultaneously. Thus, the time required for the opening operation of the gate is shortened.

  Although the opening process for the second gate 1 has been described above, the opening process for the first and third gates 1 may be controlled in exactly the same way as shown in FIG.

  Next, the close instruction processing will be described with reference to FIG. FIG. 7 is a flowchart showing gate closing control.

  The control device 16 of the second platform gate 1 waits until the closing command from the central control device 110 is received via the receiving antenna 20 in step S201. When the closing instruction is received, the door 12 is closed when the left door 12 is open (S202), and is closed when the right door 12 is open (S203).

  In step S204, the door bag 10 is moved so as to approach the origin. Specifically, the current position of the door pocket body 10 is acquired from the stored contents of the coordinate variable x2, and if the value of x2 is greater than zero, the door pocket body is moved to the left side (minus direction) in FIG. When the value of x2 is smaller than zero, the traveling motor 19 is driven so as to move the door bag body to the right side (plus direction) in FIG. In this running process as well, similarly to step S107 or S110 in FIG. 6 described above, every time the distance detection sensor 31 is switched from OFF to ON, a process of decrementing or incrementing the value of the coordinate variable x2 is also performed. .

  Next, in step S205, it is determined whether the origin detection sensor 32 has detected the origin detection piece 42 or not. If not detected, the process returns to step S204, and the running of the door bag 10 is continued. If detected, in step S206, the running of the door bag 10 is stopped. In step S206, a process of resetting the value of the coordinate variable x2 to zero is also performed. By doing so, even if an error occurs in the number of detections of the origin detection sensor 32, the error can be reset every time the origin position sensor 32 is returned to the origin position, and the door bag body 10 when the opening command is received again (FIG. 4 or FIG. 5). The error of the stop position can be reduced.

  Through the above processing, the second platform gate 1 in the state of FIG. 4 returns to the state of FIG. The three processes of the closing process of the left door body 12 in step S202, the closing process of the right door body 12 in step S203, and the moving process of the door bag body 10 in steps S204 to S206 are performed in parallel. . Therefore, the advancing operation of the left and right door bodies 12 and the movement of the door bag body 10 are performed simultaneously, and the time required for the closing operation of the gate is shortened.

  Although the closing process for the second gate 1 has been described above, the closing process for the first and third gates may be performed in exactly the same control as that shown in FIG.

  Next, the door bag overrun detection process will be described with reference to FIG. FIG. 8 is a flowchart showing overrun detection control in the second gate. The control in FIG. 8 is performed by timer interrupt control at predetermined time intervals when performing the traveling process of the door pocket body 10 such as steps S107 and S110 in FIG. 6 and step S204 in FIG.

  In FIG. 8, when the overrun detection process is started, the control device 16 of the second platform gate 1 first determines whether the current position of the door bag body 10 is on the left side or the right side of the origin position in step S301. Is determined from the value of the coordinate variable x2. As apparent from FIG. 2, when the value of the coordinate variable x2 is smaller than zero, it is left from the origin position, and when it is larger, it is right from the origin position.

  If the position of the door bag 10 is to the left of the origin, the current traveling direction of the door bag 10 is determined in step S302 of FIG. If you are driving to the right, it will end normally with no overrun. When the door bag body 10 is traveling toward the left (when traveling in a direction away from the origin position), the state of the region detection sensor 33 is checked in step S303, and when it is OFF (that is, the region detection piece 43). Is not detected), the process ends normally with no overrun. When the area detection sensor 33 is ON (when the area detection piece 43 is detected), it is determined that the door bag body 10 has overrun, and the door bag body 10 is urgently stopped (S306). The surroundings are notified by sound, light, etc. (S307). Alternatively, the receiving antenna 20 of the door bag 10 may be used for both transmission and reception, and when it is determined to be overrun, an overrun signal may be sent to the central controller 110 through the antenna 20 in step S307.

  That is, when the door 10 of the second gate 1 is located on the left side of the origin and traveling toward the left, as shown in FIG. The origin detection sensor 32 does not detect the origin detection piece 42 unless it goes to the left from the origin position of the gate 1. In other words, when the origin detection sensor 32 detects the origin detection piece 42 when the door pocket body 10 is located on the left side of the origin and traveling toward the left, the door pocket body 10 is the first. Thus, it can be determined that the vehicle has gone to the left from the origin position of the gate 1, that is, overruns beyond the normal travel range. In this embodiment, the presence or absence of overrun is determined based on the above principle. As the cause of the overrun, the program shown in FIGS. 6 and 7 may be runaway or the distance detection sensor 31 or the origin detection sensor 32 may be broken.

  Steps S304 to S305 in FIG. 8 are processes when the current position of the door bag body 10 is on the right side of the origin, and are substantially the same as steps S302 to S303 described above. Specifically, the current traveling direction of the door pocket 10 is determined in step S304, and when traveling to the left, the process ends normally assuming that there is no overrun. When the door bag body 10 is traveling rightward (when traveling in a direction away from the origin position), the state of the area detection sensor 33 is checked in step S305, and when it is ON (that is, the area detection piece 43). Is detected), the process ends normally with no overrun. When the area detection sensor 33 is OFF (when the area detection piece 43 is no longer detected), it is determined that the door bag body 10 has overrun, and the processes of steps S306 to S307 described above are performed.

  That is, when the door 10 of the second gate 1 is located on the right side of the origin and traveling toward the right, the door 10 is on the third gate 1 on the right as shown in FIG. The origin detection sensor 32 does not stop detecting the origin detection piece 42 as long as it does not go to the right side of the origin position. In other words, if the origin detection sensor 32 stops detecting the origin detection piece 42 when the door pocket body 10 is located on the right side of the origin and traveling toward the right, the door pocket body 10 It can be determined that the third gate 1 has been moved to the right side of the origin position, that is, overrun beyond the normal travel range. Based on the above principle, the control device 16 determines whether or not there is an overrun.

  As described above, in the present embodiment, when the gate shown in FIGS. 4 and 5 is opened, the distance detection sensor 31 counts the unevenness of the distance detection piece 41, thereby stopping the door pocket body 10 from the stop position (from the origin position of the door pocket body 10). The travel distance) can be finely and accurately controlled, and the door bag 10 can be finely moved to an appropriate position according to changes in the position of the entrance and the like. Further, by checking the presence / absence of the region detection piece 43 by the region detection sensor 33, it can be automatically and easily recognized whether the door bag 10 is in the left region or the right region from the origin position. Further, the origin detection piece 42 is detected by the origin detection sensor 32, so that the return to the origin position is ensured, and the distance detection error by the distance detection sensor 31 can be reset by detecting the origin. In addition, since the distance detection piece 41 is provided in common so as to straddle the traveling range of the plurality of door pockets 10, the configuration can be simplified.

  Further, as shown in FIG. 8, the control device 16 of the second gate 1 is such that the door pocket body 10 is located on the side (right side) where the area detection piece 43 is installed when viewed from the origin position, and from the origin. If the vehicle is traveling away (to the right), if the region detection sensor 33 no longer detects the region detection piece 43, an overrun is determined (S305). Further, when the door bag 10 is located on the side where the area detection piece 43 is not installed (left side) as viewed from the origin position and is traveling away from the origin (left direction), the area detection is performed. When the sensor 33 detects the area detection piece 43, it is determined that the overrun has occurred (S303).

  That is, the traveling range of the door pocket 10 of the second gate 1 is determined from the origin position of the adjacent gate (first gate) on one side to the origin position of the adjacent gate (third gate) on the other side. The region detection sensor 33 detects that the presence / absence of the region detection piece 43 is switched at the boundary, and determines an overrun. Thereby, the presence or absence of overrun of the door pocket body 10 can be reliably determined with a simple configuration and control.

  Note that the processing of FIG. 8 is overrun detection control for the second gate 1, and the overrun detection control for the first and third gates adjacent to the second is slightly different. That is, as described above, the first and third gates 1 are opposite to the second gate 1 and the area detection piece 43 exists on the left side of the origin position and the area detection piece 43 does not exist on the right side. Therefore, as shown in FIG. 9, the overrun process of the first and third gates 1 is the same as the branch process according to the state of the area detection sensor 33 in steps S303 and S305, but ON / OFF in FIG. Other than that, it is exactly the same as the processing of FIG.

  Next, referring to FIG. 10, a process when the power is turned on to the second platform gate 1 will be described. FIG. 10 is a flowchart showing the control at power-on in the second gate.

  In this power-on process, when the left door 12 is open, it is closed (S401), and when the right door 12 is open, it is closed (S402). In step S403, the control device 16 checks the state of the area detection sensor 33. As shown in FIG. 2, when the area detection sensor 33 is OFF (when the area detection piece 43 is not detected), the door pocket body 10 is located on the left side from the origin. On the other hand, when the area detection sensor 33 is ON (when the area detection piece 43 is detected), the door bag 10 is located on the right side from the origin. In short, in the process of step S403, the region detection sensor 33 detects whether the door bag body 10 is on the left side or the right side of the origin.

  If the area detection sensor 33 is OFF in step S403, the travel motor 19 is driven so that the door bag 10 travels to the right (that is, in a direction approaching the origin) in the process of step S404. In step S405, it is determined whether the origin detection sensor 32 has detected the origin detection piece 42 or not. If not detected, the process returns to step S404 and the running of the door bag 10 is continued. If detected, in step S406, the running of the door pocket 10 is stopped. In step S406, the process of resetting the value of the coordinate variable x2 to zero is also performed. On the other hand, if the area detection sensor 33 is ON in step S403, as shown in steps S407 to S409, the door pocket body 10 is moved to the left (that is, close to the origin) until the origin detection sensor 32 detects the origin detection piece 42. Run in the direction).

  As described above, when the platform gate 1 of the present embodiment is turned on, the control device 16 uses the region detection sensor 33 to check whether the position of its own door pocket body 10 is on the left side or the right side of the origin. From the result, it can be automatically determined whether the door 10 can be returned to its own origin position when traveling left or right. Then, the door body 10 is controlled to travel in this determined direction until the origin detection sensor 32 detects the origin detection piece 42. As a result, it is possible to reliably return to its own origin position.

  In light of a specific example, for example, in the state of FIG. 4, a power failure occurs for some reason, and the position of the door bag body 10 (the contents of the coordinate variable x2) stored in the RAM of the control device 16 for the second gate 1 is Even if it is lost, if it recovers from the power failure and the gate 1 is powered on, it can return to the position of the origin (x2 = 0) as follows. That is, when the state of the area detection sensor 33 is checked in step S403 in FIG. 10, the area detection sensor 33 is turned on in the state of FIG. 4, and thus it can be seen that the origin can be reached by running the door bag body 10 to the left. Accordingly, the door bag 10 is caused to travel to the left (S407), and if the origin detection sensor 32 detects the origin detection piece 42, the door bag 10 is stopped (S408, S409). Thus, even if a power failure occurs in the state of FIG. 4, if the power is recovered from the power failure, it can be returned to the origin position of FIG.

  For example, even if a power failure occurs in the state of FIG. 5, the processing of FIG. 10 can be performed to automatically return to the state of FIG. 2 after the power failure is recovered. Further, not only when the door pocket body 10 is stopped, but also when a power failure occurs while the door pocket body 10 is traveling to switch between the open state and the closed state, after the power failure is recovered, FIG. You can return to the state.

  Note that the processing of FIG. 10 is processing for the second gate 1, and the power-on processing of the first and third gates 1 adjacent to the second is slightly different. That is, as shown in FIG. 2, the first and third gates 1 have the area detection piece 43 on the left side of the origin position and the area detection piece 43 does not exist on the right side. . Accordingly, as shown in FIG. 11, in the power-on process of the first and third gates 1, the branching process according to the state of the area detection sensor 33 in step S403 is opposite to that of FIG. Other than that, it is exactly the same as the processing of FIG.

  In the present embodiment, all of the three detection pieces 41 to 43 are installed inside the groove 3 of the platform 2. Therefore, since the detection pieces 41 to 43 do not protrude on the platform 2, it is possible to prevent the passengers from getting in and out of the platform, and the detection pieces 41 to 43 are inside the groove 3 so that they are not easily noticed by the passengers. The clean appearance of the platform 2 can be easily realized.

  In the present embodiment, the three detection sensors 31 to 33 are all configured as proximity sensors. Therefore, non-contact detection is realized and the life can be extended. In addition, since the three detection sensors 31 to 33 are all provided at the lower portion of the door pocket body 10, the detection sensors 31 to 33 are less likely to be noticed by passengers, and the appearance of the platform gate 1 can be improved.

  In the present embodiment, a power supply trolley 22 for supplying power is laid in the groove 3 of the platform 2, and power necessary for running the door pocket 10 of each gate 1 is supplied from the power supply brush 23. . With this configuration, electric power can be supplied to a plurality of platform gates 1 that independently run independently with a simple configuration using the common power supply trolley 22. Moreover, even when it is necessary to move the wide traveling range to the door bag body 10 (in the case of a platform in which several types of trains with different positions and sizes of the entrance / exit stop), it is possible to respond flexibly.

  Although the preferred embodiment of the present invention has been described above, the above configuration can be modified as follows.

  (1) In the above embodiment, the control signal (open command, close command) from the central control device 110 is received on the side of the door body 10 through the transmission antenna 112 and the reception antenna 20. A configuration in which a flexible signal cable is installed inside the groove 3, one end thereof is connected to the central control device 110, and the other end is connected to the control device 16 of the door bag 10. However, if the wireless system is used as in this embodiment, there is an advantage that the wiring of the signal line can be simplified.

  (2) In the above embodiment, the contact power supply method using the power supply trolley 22 and the power supply brush 23 is used. However, for example, the door bag body 10 may be provided with a rechargeable battery and appropriately charged as necessary. A non-contact power supply method using an electromagnetic coil may be used.

  (3) The distance detection sensor 31, the origin detection sensor 32, and the region detection sensor 33 are not limited to proximity sensors, as long as the detection pieces 41 to 43 are detected and switched ON / OFF. Any type of sensor may be used. For example, a limit switch can be considered.

  (4) In the above embodiment, the unevenness is realized by forming a hole in the distance detection piece 41. However, the formation of the unevenness is not limited to this, for example, as a configuration in which the pins protrude from the distance detection piece at an equal pitch. Alternatively, a configuration in which a rack-shaped distance detection piece is installed inside the groove 3 may be employed.

  (5) In the above embodiment, only three gates 1 are shown. However, an arbitrary number of gates 1 can be installed depending on the train configuration, the number / position of entrances and exits, the platform length, etc. Of course, you can do it. In addition, with respect to the formation pitch of the unevenness in the distance detection piece 41, any stop accuracy may be set as an appropriate interval.

The block diagram which shows the electric constitution of the platform gate which comprises the platform gate system of this invention. The front schematic diagram which shows three gates of the 1st-3rd in a closed state. The partial cross section schematic diagram which shows the structure of a gate. The front schematic diagram which shows the state which opened the part of the entrance / exit. The front schematic diagram which shows the state which opened the part of the entrance / exit from which a position differs from FIG. The flowchart which shows the opening control of a gate. The flowchart which shows closing control of a gate. The flowchart which shows the overrun detection control in the 2nd gate. The flowchart which shows the overrun detection control in the 1st and 3rd gate. The flowchart which shows the control at the time of power activation in the 2nd gate. The flowchart which shows the control at the time of power activation in the 1st and 3rd gates.

Explanation of symbols

1 Platform gate (Self-propelled movable platform gate)
DESCRIPTION OF SYMBOLS 2 Platform 10 Door bag body 12/12 Door body 16 Control apparatus 31 Distance detection sensor 32 Origin detection sensor 33 Area detection sensor 41 Distance detection piece 42 Origin detection piece 43 Area detection piece 100 Platform gate system

Claims (6)

In the platform gate system that includes a plurality of door pockets that support the door body, each door pocket body is configured to be capable of self-propelled along the platform, and is opened and closed by advancing / withdrawing the door body with respect to the door pocket body,
The platform is provided with a long and narrow distance detection piece across the traveling range of a plurality of door pockets, and the distance detection piece is repeatedly formed with irregularities along the longitudinal direction at an equal pitch,
Corresponding to the origin position set for each of the plurality of door pockets, an origin detection piece is provided on the platform,
In addition, between the respective origin positions, every other elongated area detection piece is provided on the platform,
The door pocket body is provided with a distance detection sensor capable of detecting the unevenness of the distance detection piece, an origin detection sensor capable of detecting the origin detection piece, and an area detection sensor capable of detecting the area detection piece. A platform gate system characterized by that. A platform gate system according to claim 1,
Each of the door pockets is provided with a control device,
When the door pocket body is located on the side where the region detection piece is installed from the origin position and is traveling in a direction away from the origin position, the control device detects the region detection sensor. When the detection piece is no longer detected, it is judged as overrun.
When the door pocket body is located on the side where the area detection piece is not installed from the origin position and is traveling in a direction away from the origin position, the area detection sensor detects that the area detection piece is over. A platform gate system characterized by determining a run. The platform gate system according to claim 1 or 2,
Each of the door pockets is provided with a control device,
When the power is turned on, the control device checks the presence or absence of the region detection piece by the region detection sensor, determines the traveling direction of the door bag based on the detection result,
A platform gate system, wherein the door bag body is controlled to travel in the determined direction until the origin detection sensor detects the origin detection piece. A platform gate system according to any one of claims 1 to 3,
The platform gate system according to claim 1, wherein the distance detection piece, the origin detection piece, and the area detection piece are installed in a groove provided in the platform along a longitudinal direction. A platform gate system according to any one of claims 1 to 4,
The platform gate system according to claim 1, wherein the distance detection sensor, the origin detection sensor, and the area detection sensor are configured as proximity sensors. A platform gate system according to any one of claims 1 to 5,
The platform gate system according to claim 1, wherein the distance detection sensor, the origin detection sensor, and the area detection sensor are provided in a lower portion of the door pocket body.

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