Platform door device

Abstract

To provide a platform door device that can reduce inconvenience in control over doors associated with expansion and contraction of a platform floor.SOLUTION: A platform door device 100 includes a drive unit 4 that controls a door 12 installed on a platform 60 to open or close; a control unit 3 that controls the drive unit 4 using a control parameter such that the door 12 opens or closes; and an acquisition unit 5 that acquires a displacement of the fully-closed door 12 relative to a door pocket 10. When a stroke amount on the control parameter and a calculated stroke amount calculated based on information acquired by the acquisition unit 5 do not match, the control unit 3 overwrites information about the stroke amount on the control parameter based on the calculated stroke amount.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a platform door device. [Background technology]

[0002] Patent Document 1 describes a movable platform fence equipped with a drive unit that drives a door unit. This movable platform fence is equipped with a door closing movement amount detection unit that detects the amount of movement of the door unit driven by the drive unit when the door closes, and a control computer that controls the drive unit, and the control computer stops the door closing operation when the door closing movement amount reaches a set value. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-137742 Summary of the Invention [Problem to be solved by the invention]

[0004] Platform floors at railway stations expand and contract with temperature changes. For example, the length of the platform floor can change significantly between day and night. The amount of expansion and contraction in the longitudinal direction of the platform floor is particularly large, and expansion joints are sometimes used to address this. Platform door devices installed on such platform floors control the operation of the doors using control parameters based on the length of the platform floor. However, when the platform floor expands and contracts, a mismatch between the platform floor length and the control parameters can result in control problems, such as doors not being properly controlled.

[0005] Based on these findings, there is room for improvement in conventional platform door devices in terms of suppressing problems with door control caused by expansion and contraction of the platform floor.

[0006] The present invention was made in consideration of these problems, and one of its objectives is to provide a platform door device that can suppress door control problems that occur when the platform expands and contracts. [Means for solving the problem]

[0007] In order to solve the above problems, a platform door device according to one aspect of the present invention includes a drive unit that drives a door installed on a platform to open and close, a control unit that controls the drive unit to open and close the door using control parameters, and an acquisition unit that acquires positional changes of the door relative to the door case while it is fully closed. When the stroke amount on the control parameters does not match the calculated stroke amount calculated based on the information acquired by the acquisition unit, the control unit overwrites the stroke amount information on the control parameters based on the calculated stroke amount.

[0008] Another aspect of the present invention is a platform door system. This platform door system includes a drive unit that drives sliding doors installed on the platform to open and close, a control unit that controls the drive unit to drive the doors to open and close, and closed position sensors that detect when the door tails are in predetermined positions within the door pockets in which the doors are stored. When the doors are fully closed and any of the closed position sensors is not in a detecting state, the control unit drives the doors until all of the closed position sensors are in a detecting state.

[0009] 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. [Effects of the Invention]

[0010] According to the present invention, a platform door device can be provided that can suppress door control problems caused by the expansion and contraction of the platform floor. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a front view schematically showing a platform door device according to an embodiment. [Figure 2] FIG. 2 is a block diagram showing the configuration of the platform door device of FIG. 1. [Figure 3]FIG. 2 is a diagram showing an example of the speed transition of the doors during the fully closing operation of the platform door device of FIG. 1. [Figure 4] 2 is a flowchart showing a first operation of the platform door device of FIG. 1. [Figure 5] FIG. 10 is a diagram schematically illustrating a state in which one of the closed position sensors is in a non-detecting state. [Figure 6] 10 is a flowchart showing a second operation of the platform door device of FIG. [Figure 7] 7A and 7B are diagrams showing the movement of the door in the second operation of FIG. 6. DETAILED DESCRIPTION OF THE INVENTION

[0012] Among the embodiments disclosed in this specification, those that are comprised of multiple objects may be integrated, and conversely, those that are comprised of a single object may be separated into multiple objects. Regardless of whether they are integrated, it is sufficient that they are configured to achieve the object of the invention.

[0013] Among the embodiments disclosed in this specification, those in which multiple functions are provided in a distributed manner may have some or all of the multiple functions integrated together, and conversely, those in which multiple functions are provided in a distributed manner may have some or all of the multiple functions integrated together. Regardless of whether the functions are integrated or distributed, it is sufficient that the configuration can achieve the object of the invention.

[0014] Furthermore, separate components that share something in common are distinguished by prefixing their names with "first," "second," etc., and these are omitted when referring to them collectively. Furthermore, terms including ordinal numbers such as "first" and "second" are used to describe various components, but these terms are used only to distinguish one component from another, and do not limit the components.

[0015] The present invention will be described below based on preferred embodiments with reference to the drawings. In the embodiments and modifications, identical or equivalent components and members are designated by the same reference numerals, and redundant explanations will be omitted where appropriate. The dimensions of the members in the drawings are enlarged or reduced as appropriate for ease of understanding. Some members that are not important for explaining the embodiments will be omitted from the drawings.

[0016] [Embodiment] A platform door device 100 according to an embodiment of the present invention will now be described with reference to the drawings. Fig. 1 is a front view showing a schematic representation of the platform door device 100. This figure shows a perspective view of the inside of the device. Fig. 1(A) shows the fully open state, and Fig. 1(B) shows the fully closed state. Fig. 2 is a block diagram showing the configuration of the platform door device 100.

[0017] A plurality of platform door devices 100 are provided on a platform 60 of a railway station as automatic door devices for opening and closing passenger entrances 65. The platform door device 100 has a door pocket 10 and doors 12, 14 that advance and retreat left and right from the door pocket 10. The doors 12, 14 include the door 12 on the left side in the figure and the door 14 on the right side in the figure. Two door pockets 10 are arranged on the platform 60, with the passenger entrance 65 between them, and house the doors 12, 14. The platform door device 100 closes the passenger entrance 65 when the doors 12, 14 installed on the platform advance from the door pocket 10, and opens the passenger entrance 65 when the doors 12, 14 retract into the door pocket 10. The following description will mainly focus on the door 12, but this description can also be applied to the door 14.

[0018] In the embodiment, the platform door device 100 includes a drive unit 4, a control unit 3, an acquisition unit 5, and a closed position sensor 6. The drive unit 4 drives the doors 12 to open and close based on the control of the control unit 3. The control unit 3 controls the drive unit 4 to drive the doors 12 to open and close using control parameters. The acquisition unit 5 acquires the position change of the doors 12 relative to the door pockets 10 while they are fully closed. The closed position sensor 6 enters a detection state when the door tails 122 of the doors 12 are in a predetermined position within the door pockets 10 in which the respective doors 12 are stored.

[0019] The closed position sensor 6 includes a closed position sensor 61 that detects the door edge 122 of the door 12 when it is fully closed, and a closed position sensor 62 that detects the door edge 142 of the door 14 when it is fully closed. The closed position sensors 61, 62 are in a detection state when the door edge 122, 142 is within a predetermined detection range, and are in a non-detection state when the door edge 122, 142 is outside this detection range. The closed position sensors 61, 62 send detection signals indicating the detection state or non-detection state to the control unit 3. For example, the closed position sensors 61, 62 can be magnetic detection proximity sensors or photoelectric sensors that output detection signals in response to detectable objects 123, 143 provided on the door edge 122, 142.

[0020] The drive unit 4 is a door engine that incorporates a motor 41 that drives the door 12 to open and close, and drives the door 12 to move forward and backward. There are no restrictions on the drive method of the drive unit 4. The drive unit 4 in this embodiment can be configured with two pulleys 42, 43 that are rotationally driven by the motor 41, a belt 44 that is stretched around the two pulleys 42, 43, and a transmission member 45 that transmits the movement of the belt 44 to the doors 12, 14. The drive unit 4 is provided in the door pocket 10.

[0021] The acquisition unit 5 acquires the position change of the door 12 relative to the door pocket 10 while the door 12 is fully closed. There are no limitations on the acquisition unit 5 as long as it can acquire the position change of the door 12 relative to the door pocket 10. The acquisition unit 5 in this embodiment is a rotary encoder that detects the rotation of the motor 41, and provides pulses corresponding to the rotation of the motor 41. The acquisition unit 5 counts the pulses corresponding to the rotation of the motor 41 to detect the position of the door 12 relative to the door pocket 10.

[0022] The control unit 3 outputs a control signal CTL to the drive unit 4 to open or close the door 12 based on an open command signal or a close command signal from the general control panel 50. The control unit 3 is housed in the door pocket .

[0023] The control unit 3 will now be described. Each functional block of the control unit 3 shown in Fig. 2 can be realized in terms of hardware by elements such as a computer processor, CPU, and memory, electronic circuits, and mechanical devices, and in terms of software by a computer program, etc., but here, functional blocks realized by the cooperation of these elements are depicted. 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.

[0024] The control unit 3 includes an opening / closing control unit 31, a memory unit 32, a communication unit 33, a first input unit 36, and a second input unit 37. These components can communicate information with each other via a data bus 35. The communication unit 33 communicates with the general control panel 50 by wire or wirelessly, receives open command and close command signals for the door 12 from the general control panel 50, and transmits predetermined information to the general control panel 50. The opening / closing control unit 31 outputs a control signal CTL to the drive unit 4 to open or close the door 12 based on the open command and close command signals received by the communication unit 33.

[0025] The first input unit 36 acquires the position of the door 12 relative to the door pocket 10 from the acquisition unit 5. The second acquisition unit 38 acquires closed position information indicating whether the door 12 is fully closed or not from the closed position sensor 61 and the closed position sensor 62. The memory unit 32 stores the position information of the door 12 acquired by the first input unit 36, the closed position information of the door 12 acquired by the second acquisition unit 38, control parameters, and a control program for the platform door device 100. The memory unit 32 includes a non-volatile memory.

[0026] An example of the speed transition of the door 12 during a fully closing operation will be described with reference to Fig. 3 as well. Fig. 3 is a diagram showing an example of the speed transition of the door 12 during a fully closing operation. The speed transition in Fig. 3 is similarly applied to a fully opening operation. The control unit 3 controls the speed of the door 12 during a fully closing operation via the drive unit 4. At this time, the control unit 3 identifies the position of the door 12 relative to the door pocket 10 and the speed of the door 12 from the position information of the door 12 acquired by the first input unit 36.

[0027] As shown in Figure 3, when the control unit 3 receives a close command signal, it controls the drive unit 4 to accelerate the door 12, which is stopped in the initial position (fully open position), maintain that speed when it reaches a predetermined first speed, start deceleration when it reaches a deceleration start position, maintain that speed when it reaches a predetermined second speed, and stop the door 12 in that state when the door edge 121 of the door 12 comes into contact with the door edge 141 of the door 14. Note that if the platform door device is a single-wing type that does not have a door 14, the door 12 is stopped in that state when it comes into contact with a mating member such as a pillar or wall. For example, the deceleration start position may be a position relative to the door pocket 10.

[0028] The control parameters of the door 12, such as the first speed, second speed, and deceleration start position, can be set by experiment or simulation based on the specifications of the platform door device 100.

[0029] Furthermore, the control unit 3 performs control using a stroke amount S1 in the control parameters stored in the memory unit 32. For example, the stroke amount S1 is the amount of movement of the door 12 from the initial position to the stop position. The control unit 3 identifies the deceleration start position based on the stroke amount S1. If the stroke amount S1 is shorter than appropriate, deceleration will start at an earlier timing, and the total time required for the door 12 to fully close will be longer. If the stroke amount S1 is longer than appropriate, the door edge 121 of the door 12 will hit the door edge 141 of the door 14 before sufficient deceleration occurs, resulting in a greater impact.

[0030] On the other hand, the platform 60 expands and contracts with temperature changes, and the appropriate stroke amount changes depending on the time of day and the season. Therefore, in order to maintain the stroke amount S1 in the control parameters appropriately, the platform door device 100 measures the actual stroke amount and performs an update operation to update the stroke amount S1 in the control parameters based on the measurement results.

[0031] Specifically, the control unit 3 of the platform door device 100 acquires the position of the fully closed door 12 relative to the door pocket 10 using the acquisition unit 5, calculates the calculated stroke amount S2 based on the acquisition result from the acquisition unit 5, and when the calculated calculated stroke amount S2 does not match the stroke amount S1 in the control parameters, overwrites the information on the stroke amount S1 in the control parameters based on the calculated stroke amount S2. In other words, the stroke amount S1 in the control parameters stored in the memory unit 32 is rewritten with the calculated stroke amount S2.

[0032] 4, the process S110 of the first operation, which includes the update operation of the platform door device 100, will be described. Fig. 4 is a flowchart showing the process S110 of the first operation, which includes the update operation of the platform door device 100. The process S110 is started when the control unit 3 receives a close command signal from the general control panel 50 while the door 12 is stopped in the fully open position.

[0033] When the process S110 is started, the control unit 3 determines the deceleration start position based on the stroke amount S1 in the control parameters stored in the storage unit 32 (step S111). The initial stroke amount S1 is set in advance. In the full-closing operation, the door 12 is moved forward so that the door 12 advances out of the door pocket 10.

[0034] Next, the control unit 3 accelerates the door 12 to a first speed (step S112). Once the first speed is reached, the control unit 3 maintains the drive speed of the door 12 at the first speed (step S113).

[0035] Next, the control unit 3 determines whether the door 12 has reached the deceleration start position (step S114). If the door 12 has not reached the deceleration start position (N in step S114), the control unit 3 returns the process to the beginning of step S113 and repeats steps S113 to S114.

[0036] When the door 12 reaches the deceleration start position (Y in step S114), the control unit 3 decelerates the door 12 to the second speed (step S115). Once the second speed is reached, the control unit 3 maintains the door 12 at the second speed until it comes into contact with the door 14 (step S116). In this step, the door 12 approaches the stop position at a low speed.

[0037] When the door 12 comes into contact with the door 14, the door 12 stops moving regardless of the driving of the drive unit 4, so the control unit 3 determines that the door 12 has stopped and stops the drive unit 4 (step S117). In this step, the drive unit 4 may not be stopped, and door contact control may be performed to press the door 12 forward with a weak force that does not move the door.

[0038] Next, the control unit 3 acquires a change in the position of the stopped door 12 using the acquisition unit 5 (step S118). For example, if the platform 60 shrinks due to a temperature change, the door pocket 10 moves in a direction narrowing the boarding / alighting opening 65. This causes the door 12 to move relative to the door pocket 10, which is detected by the acquisition unit 5. Next, a calculated stroke amount S2 is calculated based on the information acquired by the acquisition unit 5 (step S119). For example, the calculated stroke amount S2 may be calculated by subtracting the movement amount acquired by the acquisition unit 5 from the stroke amount S1. The control unit 3 stores the calculated calculated stroke amount S2 in the memory unit 32.

[0039] Next, the control unit 3 determines whether or not an open command signal has been received from the general control panel 50 (step S120). If an open command signal has not been received (N in step S120), the control unit 3 returns the process to step S120 and repeats step S120.

[0040] When an open command signal is received (Y in step S120), the control unit 3 determines whether or not the stroke amount S1 and the calculated stroke amount S2 match (step S121).

[0041] If the stroke amount S1 and the calculated stroke amount S2 do not match (N in step S121), the control unit 3 overwrites the information of the stroke amount S1 in the control parameters based on the calculated stroke amount S2 (step S122). In this step, the control unit 3 rewrites the stroke amount S1 in the control parameters stored in the storage unit 32 with the calculated stroke amount S2. After executing step S122, the control unit 3 proceeds to step S123.

[0042] If the stroke amount S1 and the calculated stroke amount S2 match (Y in step S121), the control unit 3 executes the full-open operation without overwriting the stroke amount S1 (step S123). In the full-open operation, the control unit 3 moves the door 12 backward to the fully open position. During this process, the control unit 3 accelerates the door 12 to a first speed and maintains that speed, then decelerates the door 12 to a second speed at which the door 12 reaches a deceleration start position and maintains that speed, and stops the door 12 at the fully open position. The deceleration start position in the full-open operation is determined based on the stroke amount S1.

[0043] After step S123 is executed, process S110 ends. Process S110 may be executed repeatedly. This process is an example, and various modifications are possible, such as adding, deleting, or changing steps.

[0044] In the explanation of process S110, an example was shown in which the platform 60 contracted due to a temperature change, but if the platform 60 expanded due to a temperature change, the position of the door 12 relative to the door pocket 10 at the most recent time when the door was fully closed may be referenced. If the platform 60 expanded due to a temperature change, the door pocket 10 moves in a direction that widens the boarding / alighting opening 65. Since the stopped door 12 moves together with the door pocket 10, the acquisition unit 5 does not detect the change in the position of the door 12, but after the next opening / closing operation, the position of the stopped door 12 relative to the door pocket 10 differs from the position at the most recent time when the door was fully closed, so the acquisition unit 5 acquires this and calculates the stroke amount S2.

[0045] In the explanation of process S110, an example was shown in which the information on the stroke amount S1 in the control parameters is overwritten at the timing when the door 12 is fully opened, but the present invention is not limited to this. The timing for overwriting the information on the stroke amount S1 in the control parameters may be any time after the calculated stroke amount S2 is calculated based on the information acquired by the acquisition unit 5.

[0046] In the explanation of process S110, an example was given in which information on the stroke amount S1 is overwritten when the stroke amount S1 and the calculated stroke amount S2 do not match, but the present invention is not limited to this. The control unit 3 may also prevent information on the stroke amount S1 in the control parameters from being overwritten when the discrepancy between the stroke amount S1 in the control parameters and the calculated stroke amount S2 is within a predetermined range. The discrepancy is the difference between the stroke amount S1 and the calculated stroke amount S2. This predetermined range can be determined depending on the magnitude of the detection error of the encoder or the like of the acquisition unit 5 and the detection resolution, and may be set, for example, to one or more times, two or more times, or three or more times the resolution. By configuring in this manner, overwriting can be avoided when the discrepancy is small, thereby reducing the frequency of overwriting.

[0047] Next, we will explain the closed position adjustment operation of the platform door device 100. When the power is turned on, the platform door device 100 performs a full-open operation and a full-close operation at full speed as a startup check operation to check for any abnormalities in the device. The start condition for the startup check operation is that both closed position sensors 61, 62 are in a detection state detecting the door tails 122, 142.

[0048] 5 is a schematic diagram showing the platform door device 100 in which one of the closed position sensors 61, 62, the closed position sensor 62, is in a non-detecting state. As shown in this figure, if some kind of foreign object 70 is temporarily caught between the doors 12, 14 when the doors are fully closed, both doors 12, 14 cannot move forward, so it is determined that the doors are in a fully closed state, and one of the closed position sensors 61, 62 may remain in a non-detecting state and stop. In this case, even if the foreign object 70 is removed, one of the closed position sensors 61, 62 will remain in a non-detecting state. Therefore, if a power outage occurs and the power is turned on in this state, manual recovery work by an operator will be required, which is time-consuming and cumbersome.

[0049] Therefore, the platform door device 100 of the embodiment executes a close position adjustment operation when one of the close position sensors 61, 62 is in a detecting state and the other is in a non-detecting state during normal opening and closing operations. In the close position adjustment operation, the doors 12, 14 are driven until all of the close position sensors 61, 62 are in a detecting state.

[0050] In an embodiment, when doors 12 and 14 are fully closed, if the closed position sensor of one door is in a non-detecting state and the closed position sensor of the other door is in a detecting state, the platform door device 100 drives one door to push the other door.

[0051] For example, when the closed position sensor 61 is in a detecting state and the closed position sensor 62 is in a non-detecting state, the door 12 corresponding to the detecting closed position sensor 61 is set free, and the door 14 is moved forward toward the door 12 until the non-detecting closed position sensor 62 is set in a detecting state. Setting the door 12 free means that the door 12 can be moved by an external force.

[0052] By performing the closed position adjustment operation when the door is fully closed, even if a power outage occurs when the door is fully closed, it is possible to keep both closed position sensors 6 in a detection state with a high probability.

[0053] 6 and 7, the process S210 of the second operation, which includes the operation of adjusting the closed position of the platform door device 100, will be described. Fig. 6 is a flowchart showing the process S210 of the second operation, which includes the operation of adjusting the closed position of the platform door device 100. Fig. 7 is a diagram showing the movement of the doors 12, 14 in the second operation. Process S210 starts in the fully closed state.

[0054] When the process S210 starts, the control unit 3 acquires the detection results from the closed position sensors 61 and 62 (step S211).

[0055] Next, the control unit 3 determines whether or not both of the closed position sensors 61 and 62 are in the detecting state based on the acquired detection result (step S212). If both of the closed position sensors 61 and 62 are in the detecting state (Y in step S212), the process S210 ends.

[0056] If at least one of the closed position sensors 61, 62 is not in a detecting state (N in step S212), the control unit 3 determines whether or not both of the closed position sensors 61, 62 are in a non-detecting state (step S213).

[0057] If both the closed position sensors 61 and 62 are in the non-detecting state (Y in step S213), the control unit 3 outputs some kind of alarm indicating an abnormal state (step S214), and the process S210 ends.

[0058] If one of the closed position sensors 61, 62 (for example, the closed position sensor 62) is in a non-detecting state (N in step S213), the control unit 3 stops driving the other door 12 and makes it movable by an external force (step S215).

[0059] Next, the control unit 3 moves one door 14 forward to push the other door 12 (step S216). FIG. 7(A) shows the state in which the door 14 moves forward, and FIG. 7(B) shows the state in which the door 14 pushes the door 12, with the dashed line indicating the door 14 before moving forward. Once the door 14 has been moved forward, the control unit 3 returns to step S211 and repeats the loop of steps S211 to S216. If, as a result of repeating this loop, both of the closed position sensors 61 and 62 are in a detection state, the process S210 ends. This process is an example, and various modifications such as adding, deleting, or changing steps are possible.

[0060] The above is an explanation of the closed position adjustment operation of the platform door device 100.

[0061] Next, features of the platform door device 100 of the embodiment will be described. The platform door device 100 of the embodiment includes a drive unit 4 that drives the doors 12 installed on the platform 60 to open and close, a control unit 3 that controls the drive unit 4 to drive the doors 12 to open and close using control parameters, and an acquisition unit 5 that acquires positional changes of the doors 12 relative to the door pockets 10 when the doors 12 are fully closed. When a stroke amount S1 on the control parameters does not match a calculated stroke amount S2 calculated based on information acquired by the acquisition unit 5, the control unit 3 overwrites the information on the stroke amount S1 on the control parameters based on the calculated stroke amount S2.

[0062] According to this configuration, the stroke amount S1 in the control parameters is automatically updated based on the information acquired by the acquisition unit 5, thereby suppressing control problems of the door 12 caused by the expansion and contraction of the platform 60, such as insufficient deceleration during the opening drive.

[0063] As an example, the control unit 3 overwrites the information on the stroke amount S1 in the control parameters at the timing of opening the door 12. In this case, even if the platform 60 expands or contracts while the platform door device 100 is in the fully closed state after the door 12 is closed, the operation of the door 12 can be controlled using the stroke amount S1 that has been overwritten and reflects the latest state.

[0064] For example, if the discrepancy between the stroke amount S1 in the control parameters and the calculated stroke amount S2 is within a predetermined range, the control unit 3 does not overwrite the information about the stroke amount S1 in the control parameters. In this case, the frequency with which the information about the stroke amount S1 is overwritten decreases, and the processing load of the control unit 3 can be reduced.

[0065] The platform door device 100 of the embodiment includes a drive unit 4 that drives the opening and closing of sliding doors 12, 14 installed on a platform 60, a control unit 3 that controls the drive unit 4 to drive the doors 12, 14 to open and close, and closed position sensors 61, 62 that are in a detection state when the door tails of the doors 12, 14 are in predetermined positions within the door pockets 10 in which the doors 12, 14 are stored. When the doors 12, 14 are in a fully closed state, if any of the closed position sensors is in a non-detection state, the control unit 3 drives the doors 12, 14 until all of the closed position sensors 61, 62 are in a detection state.

[0066] This configuration enables high-speed opening as a startup check operation immediately after power-on. The doors 12 and 14 can be automatically moved to a position where both the closed position sensors 61 and 62 are in a detection state. This reduces the possibility that the startup check operation will not be performed. It also avoids the need for manual recovery work by an operator.

[0067] As an example, when the doors 12, 14 are in the fully closed state, if the closed position sensor 62 that detects the door end 142 of one of the doors 12, 14 is in a non-detecting state and the closed position sensor 61 that detects the door end 122 of the other of the doors 12, 14 is in a detecting state, the control unit 3 drives one of the doors 14 to push the other door 12. In this case, by controlling one of the doors 14, the doors 12, 14 can be moved to a position where both of the closed position sensors 61, 62 are in a detecting state.

[0068] The above is a description of the embodiment.

[0069] [Variations] The following describes modified examples. In the drawings and descriptions of the modified examples, the same or equivalent 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 embodiment.

[0070] In the description of the embodiment, an example was shown in which the acquisition unit 5 is a rotary encoder, but the present invention is not limited to this. For example, the acquisition unit 5 may be a distance measuring sensor capable of detecting the distance from the door pocket 10 to the door edge of the door 12.

[0071] In the description of the embodiment, an example was shown in which the information on the stroke amount S1 is overwritten after an open command signal is received from the general control panel 50, but the present invention is not limited to this. For example, the information on the stroke amount S1 may be overwritten every time the information on the acquisition unit 5 is updated.

[0072] If the difference between the stroke amount S1 and the calculated stroke amount S2 is greater than a preset threshold for trapping something in the door, it may be determined that something is trapped in the door, and if this difference is greater than a preset threshold for determining whether the door is being forced open, it may be determined that someone is trying to force the door open.

[0073] In the description of the embodiment, the platform door device 100 has two sliding doors 12, 14, but the present invention is not limited to this. One of the doors 12, 14 may be omitted unless it is contrary to the scope of the claims.

[0074] In the description of the embodiment, an example was shown in which the close position adjustment operation is performed during the fully closed state, but the present invention is not limited to this. For example, the close position adjustment operation may be performed during the period from when the open instruction signal is received until the opening operation is started.

[0075] The above-described modified examples have the same functions and effects as the respective embodiments.

[0076] 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 the combined embodiments and modifications. [Explanation of symbols]

[0077] 3 control unit, 4 drive unit, 5 acquisition unit, 6 closed position sensor, 10 door pocket, 12, 14 door, 60 platform, 61, 62 closed position sensor, 100 platform door device, 122, 142 door end.

Claims

1. a drive unit that drives the doors installed on the platform to open and close; a control unit that controls the drive unit to open and close the door using control parameters; an acquisition unit that acquires a position change of the door relative to a door pocket while the door is fully closed; Equipped with The control unit is a platform door device that overwrites the information on the stroke amount on the control parameters based on the calculated stroke amount when the stroke amount on the control parameters does not match the calculated stroke amount calculated based on the information acquired by the acquisition unit.

2. The platform door device according to claim 1, wherein the control unit overwrites the stroke amount information on the control parameters at the timing of opening the door.

3. The platform door device according to claim 1, wherein the control unit does not overwrite information about the stroke amount on the control parameters when the discrepancy between the stroke amount on the control parameters and the calculated stroke amount is within a predetermined range.

4. a drive unit that drives the opening and closing of the sliding doors installed on the platform; a control unit that controls the drive unit to drive the door to open and close; a closed position sensor that detects when the tail end of each door is at a predetermined position in a door pocket in which the door is stored; Equipped with The control unit is a platform door device that, when the door is fully closed and any of the closed position sensors is in a non-detecting state, drives the door until all of the closed position sensors are in a detecting state.

5. The control unit drives one of the doors to push the other door when the closed position sensor that detects the tail end of one of the doors is in a non-detecting state and the closed position sensor that detects the tail end of the other of the doors is in a detecting state when the doors are in a fully closed state. The platform door device described in claim 4.

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