JP6976099B2 - Stop position detection system - Google Patents

Description

The present invention relates to a stop position detection system.

Movable platform fences are being installed on the platforms of railway stations. Once the movable platform screen doors are installed, the train must stop at a fixed stop position where the platform doors and the boarding / aisles opened and closed by the movable platform screen doors coincide.

Conventionally, an automatic train operation device, a fixed-position stop device, or the like has been used to determine whether or not a train has stopped at a fixed stop position. However, these devices are large-scale systems and require a large cost. Therefore, there is a demand for a simple system for detecting the stop position of a train.

Patent Document 1 discloses a technique of measuring a distance to a train by ultrasonic waves and detecting that the train has stopped from the fluctuation of the measured distance.

Patent Document 2 discloses a technique of measuring a distance to a train using microwaves and detecting a stopped state and a stopped position of the train from the measured distance.

Japanese Unexamined Patent Publication No. 2002-284010 Japanese Unexamined Patent Publication No. 2014-061796

The technique described in Patent Document 1 is premised on determining a state such as a stop of a preceding train in order to combine a preceding train and a succeeding train. Therefore, the technique described in Patent Document 1 cannot be applied when the train is stopped at a fixed stop position.

Further, in the technique described in Patent Document 2, microwaves are affected by disturbances due to reflectors on the platform and disturbances due to the environment such as wind, rain, and snow, and an error occurs in the measured distance. Therefore, the stop position detection device described in Patent Document 2 has low reliability of fixed-position stop determination.

The present invention has been made under such a background, and an object of the present invention is to provide a stop position detection system that performs a highly reliable fixed-position stop determination with a simple configuration.

In order to achieve the above object, the stop position detection system according to the present invention is installed in front of or behind the fixed stop position of the train on the track in the traveling direction, and detects the position of the train and the state of the train. The position stop determination means, the presence / absence detection means for detecting the presence / absence of the train at the fixed stop position, and the position of the train detected by the fixed position stop determination means are within a preset range and the train is in a stopped state. It also includes a discriminating means for outputting information indicating the existence of a train to an external device when the presence / absence detecting means detects the existence of the train. A medium for holding vehicle information is arranged on the train, the presence / absence detection means is equipped with a presence / absence detection sensor that acquires vehicle information from the medium, and the determination means is that the train indicated by the acquired vehicle information is scheduled to enter the line. It is determined whether or not the train matches the train, and if it matches, it is determined that the train exists. Further, the external device is a movable platform fence installed on a platform adjacent to the track, and the movable platform fence is a door body that can be opened and closed, a door pocket in which the door body is stored, and a control that controls the door body. The presence / absence detection means is attached to the door pocket of the movable platform screen door and includes a sensor for collecting information for determining the presence / absence of the vehicle, and the control unit of the movable platform fence is a determination means. The door body of the movable platform fence is controlled based on the determination result output from.

According to the present invention, a train is set to a fixed stop position by using both a fixed-position stop determining means for detecting the position of the train and the state of the train and the presence / absence detecting means for detecting the presence / absence of the train on the track. Since it is determined that the train is stopped, it is possible to perform a highly reliable fixed-position stop determination as compared with the case where it is determined that the train is stopped at the fixed-position stop position only by the fixed-position stop determination means.

A block diagram schematically showing the overall configuration of the stop position detection system according to the first embodiment of the present invention. Block diagram of the stop position detection system according to the first embodiment It is a schematic diagram which showed the outline of the distance measurement by the fixed-position stop sensor which concerns on Embodiment 1, (A) is a plan view, (B) is an explanatory view. A flowchart showing processing by the stop position determination program according to the first embodiment. A flowchart showing processing by the fixed-position stop sensor output acquisition function according to the first embodiment. It is a block diagram which shows schematic structure of the stop position detection system which concerns on Embodiment 2 of this invention, (A) is an outline view, (B) is a plan view. A flowchart showing the processing of the stop position determination program according to the second embodiment. Outline of the stop position detection system according to the third embodiment of the present invention. Schematic diagram showing the outline of train presence / absence detection according to the third embodiment A flowchart showing the processing of the stop position determination program according to the third embodiment. A flowchart showing processing by the stop position determination program according to the fourth embodiment of the present invention.

Hereinafter, the stop position detection system according to the embodiment of the present invention will be described with reference to the drawings. The same or equivalent parts are designated by the same reference numerals.

(Embodiment 1)
The stop position detection system according to the first embodiment will be described with reference to FIGS. 1 to 5.

In the following description, in order to facilitate understanding, as shown in FIG. 1, the X coordinate is in the longitudinal direction of the platform 2, the Y coordinate is in the height direction, and the direction orthogonal to the X coordinate and the Y coordinate, that is, the platform. Set the Z coordinate in the width direction of 2 and refer to it as appropriate. Further, in FIG. 1, the direction from left to right is the + X direction, the direction from the bottom to the top is the + Y direction, and the direction from the orbit to the platform 2 is the + Z direction.

First, as a premise, the movable platform fence 1 used together with the stop position detection system of the present embodiment will be described.
As shown in FIG. 1, the movable platform fence 1 includes a fixing portion 4 fixed to the platform 2 and door bodies 6a and 6b attached to the fixing portion 4 to open and close the boarding / alighting passage 5.

The fixing portion 4 is formed in a box shape and is generally called a door pocket. A plurality of fixing portions 4 are installed side by side on the floor surface of the platform 2 in the X-axis direction. The door bodies 6a and 6b are housed in the fixed portions 4 so as to be able to move forward and backward in the X-axis direction, and a drive mechanism for driving the door bodies 6a and 6b and a control unit for controlling the drive mechanism are arranged. Only one of the door bodies 6a and 6b is housed in the fixing portions 4 at both ends.

The door bodies 6a and 6b function as opening / closing members for opening and closing the boarding / alighting passage 5, and are slide doors that are freely attached to the fixing portion 4 in an advancing / retreating manner. FIG. 1 shows a state in which the door bodies 6a and 6b are pulled out of the fixed portion 4, the door ends are in contact with each other, and the boarding / alighting passage 5 is closed. In the state where the boarding / alighting passage 5 is open, the door bodies 6a and 6b are pulled into the fixed portion 4.

In each track, the stop target position P0 at the head of the train 20 is predetermined for each type of train.

A data processing device 7 is attached to the fixed portion 4 adjacent to the stop target position P0. Details of the data processing device 7 will be described later.

An RFID (Radio Frequency IDentifier) reader 8 is attached to the fixed portion 4 adjacent to the fixed portion 4 to which the data processing device 7 is attached in the + X direction. An antenna 9 for detecting the RFID tag 23 is connected to the RFID reader 8. Vehicle information such as a system ID, a vehicle type of the train to which the RFID tag 23 is attached, and train identification information is written in advance on the RFID tag 23. The RFID tag 23 is pre-attached to a portion hidden under the platform 2 of the leading car of the train 20. The antenna 9 is arranged under the platform 2 so as to be at the same height as the RFID tag 23 attached to the train 20. By aligning the heights of the RFID tag 23 and the antenna 9, the antenna 9 can easily detect the RFID tag 23 when the train 20 passes or stops in front of the antenna 9.

Next, the stop position detection system 100 according to the first embodiment will be described.

As shown in FIG. 2, the stop position detection system 100 includes a fixed-position stop sensor 50 for determining whether or not the stop position of the train 20 is a fixed stop position, and whether or not the train 20 is on the track. Data that processes the presence / absence detection sensor 51 that detects the presence / absence, the output signal of the fixed-position stop sensor 50, and the output signal of the presence / absence detection sensor 51, and determines whether or not the train 20 is stopped at the fixed-stop position. It is provided with a processing device 7.

As shown in FIG. 1, the fixed-position stop sensor 50 is arranged on the side of the track in the traveling direction of the train 20, and whether or not the train 20 is stopped at a fixed position and whether or not the train 20 is stopped. It is a sensor for detecting. In the present embodiment, the fixed-position stop sensor 50 outputs a signal indicating a distance value L to the head portion of the train 20, as shown in FIG. That is, the fixed-position stop sensor 50 is a kind of distance sensor.

The presence / absence detection sensor 51 shown in FIG. 2 determines whether or not the train 20 is on the track in contact with the platform 2, and outputs a presence / absence detection signal. In the present embodiment, the presence / absence detection sensor 51 is an RFID reader 8 installed in the fixed portion 4. The RFID reader 8 wirelessly communicates with the RFID tag 23 attached to the train 20 by a short-distance radio wave transmitted from the antenna 9, and reads vehicle information from the RFID tag 23. Further, the presence / absence detection signal corresponds to the vehicle type indicated by the vehicle type data among the vehicle information read from the RFID tag 23 attached to the train 20 by the RFID reader 8.

The data processing device 7 is a computer, which is arranged in the fixed unit 4, and the train 20 is set to the fixed stop position based on the signal transmitted from the fixed position stop sensor 50 and the signal transmitted from the presence / absence detection sensor 51. Determine if it is stopped. The determination method will be described later with reference to FIGS. 5 and 6.

When the data processing device 7 determines that the train 20 has stopped at the fixed stop position, it outputs a stop confirmation signal to the external device 60. The external device 60 is, for example, a control unit of the movable platform fence 1 or a notification device for notifying the crew of the train 20 of the state of the train 20. For example, the control unit of the movable platform fence 1 drives the drive mechanism to open the door bodies 6a and 6b in response to the stop confirmation signal from the data processing device 7, and opens the boarding / alighting passage 5. Further, the notification device notifies the crew of the train 20 that the train 20 has stopped at a fixed stop position. The crew, for example, opens the boarding / alighting door of the train 20 after confirming this notification.

The fixed position stop sensor 50 irradiates the head portion of the train 20 with a laser beam 30 such as an infrared laser, and receives the reflected light of the first distance sensor 501 and the second distance sensor 502, and the first distance sensor 501 and the first distance sensor 50. A control unit 503 that controls the two-distance sensor 502 is provided. The first distance sensor 501 is the main distance sensor, and the second distance sensor 502 is the slave distance sensor.

As shown in the plan view of FIG. 3A, the first distance sensor 501 and the second distance sensor 502 are arranged at left and right positions with respect to the front of the front portion of the train 20. The first distance sensor 501 and the second distance sensor 502 each measure the distance value L to the head portion of the train 20. The control unit 503 obtains the average of the distance values L measured by the first distance sensor 501 and the second distance sensor 502, respectively, and sets the obtained distance as the distance value L. By duplicating the sensor function in this way, the accuracy of distance measurement can be improved.

As shown on the side surface in FIG. 3B, the first distance sensor 501 and the second distance sensor 502 periodically scan the semicircular field in the vertical direction toward the head portion of the train 20, respectively. .. For example, the scan cycle is 25 msec, the scan angle is 190 °, the angular resolution is 0.25 °, the number of measurement points per scan is 760 points, and the maximum measurement distance is 100 m.

The control unit 503 calculates the sensor detection distance value a, which is the distance value to the head portion of the train 20, at each scanning angle θ with respect to the horizontal for each scan. The control unit 503 calculates the horizontal distance value b to the head portion of the train 20 from b = a × Cos θ based on the scanning angle θ and the sensor detection distance value a for each point. The control unit 503 has a value having a specific difference of ± X mm or more, that is, a value of (M + X) or more and (MX) centered on the median value M of the horizontal distance value b of the N points obtained in one scan. ) Exclude the following values as invalid values and use the remaining values as valid values. The control unit 503 takes the average value of only the effective values and uses it as the effective horizontal distance value c obtained in one scan. The control unit 503 sets the average value of the effective horizontal distance value c obtained by the first distance sensor 501 and the effective horizontal distance value c obtained by the second distance sensor 502 at the head of the fixed position stop sensor 50 and the train 20. Let L be the distance value between the parts.

The control unit 503 outputs the average value of the distance values L measured by the first distance sensor 501 and the second distance sensor 502 to the data processing device 7.

As described above, the presence / absence detection sensor 51 includes the RFID reader 8. The presence / absence detection sensor 51 outputs to the data processing device 7 information indicating the vehicle type included in the vehicle information read from the RFID tag 23 installed on the train 20 by the RFID reader 8.

The data processing device 7 determines that the head portion of the train 20 is located within the fixed stop position range, the train 20 is stopped, and the train 20 is on the track in contact with the platform 2. A stop confirmation signal is output to 60. As described above, the external device 60 is a movable platform fence 1, a notification device, and the like.

For example, the control unit of the movable platform fence 1 responds to the stop confirmation signal from the data processing device 7, opens the door bodies 6a and 6b, and opens the boarding / alighting passage 5. Further, the notification device responds to the stop confirmation signal from the data processing device 7 and notifies the crew of the train 20 that the train 20 has stopped at the fixed stop position. After confirming this notification, the crew will open the door for getting on and off the train.

Next, the process of determining the stop position performed by the data processing device 7 will be described.
A stop position determination program for executing the stop position determination process shown in FIG. 4 is installed in the data processing device 7.
The data processing device 7 activates the stop position determination program shown in FIG. 4, for example, when the incoming line sensor (not shown) detects that the train 20 has entered the track in contact with the platform 2. The stop position determination program may be started periodically.

When the data processing device 7 activates the stop position determination program, it first acquires the vehicle type data of the train scheduled to enter from the train information device (not shown). The data processing device 7 obtains a stop target position P0 predetermined for the vehicle type specified by the acquired vehicle type data, and further, a stop error position P1 separated by a distance determined by the vehicle type before and after the stop target position P0. , P2 are set, and the range between the stop error positions P1 and P2 is set as the fixed position stop range P1 to P2.

Next, the data processing device 7 calls the fixed-position stop sensor output acquisition function (step S11).

When the data processing device 7 calls the fixed-position stop sensor output acquisition function, the process shown in FIG. 5 is started, and first, the distance value L to the head of the train 20 measured by the fixed-position stop sensor 50 is acquired ( Step S21). As described above, this distance value L is an average value of the distance values L measured by the first distance sensor 501 and the second distance sensor 502, respectively.
The data processing device 7 obtains and stores the actual stop position Ps of the head portion of the train 20 from the acquired distance value L. Further, at this time, if the previous actual stop position Ps is stored, it is held as the previous actual stop position Pe (step S22).

Next, the data processing device 7 determines whether or not the actual stop position Ps is within the fixed-position stop ranges P1 to P2 (step S23). If the control unit 503 determines that the actual stop position Ps is within the constant stop position range (step S23: YES), the control unit 503 turns on the fixed position determination signal (step S24). On the other hand, if it is determined that the actual stop position Ps is not within the fixed stop position range (step S23: NO), the process returns to step S21 and the distance value L to the train 20 is reacquired.

On the other hand, the data processing device 7 determines whether or not the train 20 is stopped after the execution of step S24. The amount of displacement of the actual stop position Ps per unit time differs depending on the speed of the train 20, the displacement of the actual stop position Ps per unit time increases at high speeds, and the actual stop position Ps per unit time decreases at low speeds. The displacement of is small. Further, in the stopped state, the actual stop positions Ps are the same even after a certain period of time has elapsed. Therefore, it is possible to determine whether or not the train 20 is stopped based on the fixed time and the actual stop position Ps. The stop determination checks the displacement (= Ps-Pe) of the actual stop position per unit time, and if the predetermined stop determination standard is satisfied, it is determined that the train 20 is stopped. Here, the distance traveled during the scan cycle of 25 msec is defined as the distance displacement. Further, as a stop determination criterion, for example, 20 mm / sec is set.

In the data processing device 7, whether or not the state in which the value (difference = Ps-Pe) obtained by subtracting the current actual stop position Ps from the previous actual stop position Pe is less than 20 mm continues for a certain period of time, for example, 0.5 seconds. Is determined. It should be noted that this fixed time is an arbitrarily determined time within a range that does not interfere with the operation of the train 20.

When the state in which the difference is less than 20 mm continues for a certain period of time, the data processing device 7 determines that the train 20 is in the stopped state (step S25: YES), and turns on the stop determination signal (step S26). ). The data processing device 7 ends the fixed-position stop sensor output acquisition function, and returns to step S12 of the stop position determination program shown in FIG.

On the other hand, the data processing device 7 determines that the train 20 is not in the stopped state when the difference is not less than 20 mm, or when the difference is less than 20 mm but the duration does not reach a certain time (step S25). : NO), the process returns to step S21.

The fixed-position stop sensor 50 for obtaining the distance value L to the head portion of the train 20 and the data processing device 7 for executing steps S24 and S26 cooperate to function as the fixed-position stop determination means in the present invention. ..

The data processing device 7 acquires the vehicle information read from the RFID tag 23 from the RFID reader 8 in step S12 of FIG. 4 (step S12).

Next, the data processing device 7 determines whether or not the fixed position determination signal set in step S24 and the stop determination signal set in step S26 are both on and the train 20 is present on the track. (Step S13). The data processing device 7 compares the vehicle type of the train scheduled to enter the line read from the train information device with the vehicle type indicated by the vehicle type data in the vehicle information read in step S12, and if they match, the RFID reader 8 It is determined that the train 20 is on the track in contact with the platform 2 on which the fixed portion 4 is arranged.

The RFID reader 8 that reads the vehicle information stored in the RFID tag 23 arranged on the train 20, the vehicle type data of the train scheduled to enter the line read from the train information device, and the vehicle type data in the vehicle information provided by the RFID reader 8. In cooperation with the data processing device 7 that detects the presence / absence of the vehicle by detecting the match / mismatch with the vehicle type indicated by the above, it functions as the presence / absence detection means in the claim. Further, the data processing device 7 functions as a discriminating means in the claim by executing this step S13.

In the data processing device 7, the fixed position determination signal and the stop determination signal acquired from the fixed position stop sensor 50 are on, and the train 20 is present on the track based on the vehicle information acquired from the RFID reader 8. If it is determined (step S13: YES), a stop confirmation signal is output to the external device 60 (step S14).

In response to the stop confirmation signal, for example, the movable platform fence 1 drives the drive mechanism to open the door bodies 6a and 6b so that the boarding / alighting passage 5 can pass through. In addition, the notification device notifies the crew of the train 20 to that effect. The crew opens and closes the train doors according to the notification from the notification device.

On the other hand, when it is determined in step S13 that the fixed position determination signal or the stop determination signal is not on, and that the vehicle model acquired from the train information device and the vehicle model indicated by the vehicle model data read from the RFID tag 23 do not match. (Step S13: NO), the process returns to step S11, and the above-mentioned operation is repeated.

As described above, the stop position detection system according to the present embodiment determines that the train 20 is stopped at the fixed stop position by using both the fixed position stop sensor 50 and the RFID reader 8. Therefore, it is possible to perform a highly reliable fixed-position stop determination as compared with the case where the fixed-position stop sensor 50 alone determines that the train 20 is stopped at the fixed-stop position.

Further, the fixed-position stop sensor 50 uses laser light, and the RFID reader 8 uses radio waves. Therefore, even if the fixed-position stop sensor 50 malfunctions due to the influence of the installation environment such as snow, wind and rain, and rain, the RFID reader 8 is hardly affected by the disturbance and does not malfunction. Therefore, the malfunction of the fixed-position stop sensor 50 can be easily determined.
Further, since the radio wave used by the RFID reader 8 is a short-distance radio wave, it is suitable for arranging it on the movable platform fence 1 which is close to the train 20.

Further, when the fixed-position stop sensor 50 is already installed, the stop position detection system according to the present embodiment can be used simply by attaching the RFID reader 8 to the movable platform fence 1 and attaching the RFID tag 23 to each train. .. Therefore, it is possible to easily introduce a stop position detection system that performs a highly reliable fixed-position stop determination.

(Modification example)
In the above embodiment, the fixed-position stop sensor 50 is arranged in front of the stop position of the train 20, but it may be rearward. In this case, the rear surface of the last car of the train may be used as a reference.

In the above embodiment, in order to identify the vehicle type of the train 20, a medium having vehicle information including the vehicle type is arranged on the train 20 and read. The medium for holding the vehicle information is not limited to the RFID tag 23, and may be any medium such as a barcode. As the presence / absence detection sensor 51, a reader may be used according to the type of medium. For example, when the medium is a barcode, a barcode reader may be used.

In the above description, the fixed-position stop sensor 50 only obtains and outputs the distance value L, but the control unit 503 executes the processes of steps S21 to 26 in FIG. 5, and outputs the fixed-position determination signal and the stop determination signal. It may be provided to the data processing device 7. In this case, the data processing device 7 need only perform the processing shown in FIG. Further, in this case, it is desirable that the data processing device 7 provides the stop target position P0 and the stop error positions P1 and P2 according to the vehicle type to the control unit 503 of the fixed-position stop sensor 50. The stop target position P0 and the stop error positions P1 and P2 may be set as fixed stop positions.

Further, the fixed-position stop sensor 50 determines whether or not both the fixed-position determination signal and the stop determination signal are on, and outputs an on signal to the data processing device 7 when both signals are on. It may be configured in. In this case, the process of step S13 in FIG. 4 is simplified.

Similarly, the presence / absence detection sensor 51 compares the vehicle type of the train scheduled to enter the line read from the train information device with the vehicle type indicated by the vehicle type data read from the RFID reader 8, and if they match, the train 20 is on track. You may turn on the presence / absence detection signal indicating that the line is present.

Further, the control unit 503 and the data processing device 7 may be shared and executed by one processor.

Further, instead of the stop target position P0 and the stop error positions P1 and P2, the distance values L0, L1 and L2 from the fixed-position stop sensor 50 may be used.

In the above explanation, the presence / absence detection signal is turned on when the vehicle type data of the train scheduled to enter the line read from the train information device and the vehicle type data from the RFID reader 8 match, but the vehicle type data read from the RFID reader 8 is turned on. However, it may be determined whether or not the vehicle is registered in the list of vehicles that may enter the line, and when the registration is performed, the presence / absence detection signal may be turned on.

The arrangement position of the data processing device 7, the RFID reader 8, the arrangement position of the fixed-position stop sensor 50, and the like are arbitrary and can be changed as appropriate.

(Embodiment 2)
The stop position detection system according to the second embodiment will be described with reference to FIGS. 6 and 7.

As shown in FIG. 6A, a data processing device 7 is attached to the fixed portion 4 adjacent to the stop target position P0. A photoelectric sensor 11 is attached to the fixed portion 4 to which the data processing device 7 is attached and which is arranged in the + X direction with the door bodies 6a and 6b interposed therebetween. The photoelectric sensor 11 functions as the presence / absence detection sensor 51 in the present embodiment.

As shown in FIG. 6B, the photoelectric sensor 11 irradiates the orbital side with a sensor beam 40 of light such as visible light and infrared light from the light projecting unit. When the train 20 enters the track, the sensor beam 40 is reflected by the train 20. The photoelectric sensor 11 detects a change in the amount of reflected light at the light receiving unit, and outputs an on-level presence / absence detection signal when the train 20 has entered the track, that is, detects the presence / absence of the train 20.

The operation of the stop position detection system in the second embodiment is the same as the operation of the first embodiment described above, except that the photoelectric sensor 11 is used as the presence / absence detection sensor 51.

The process of determining the stop position performed by the data processing device 7 will be described. In the present embodiment, the stop position determination program shown in FIG. 7 is installed in the data processing device 7.

The data processing device 7 starts the stop position determination program at the timing when, for example, the sensor detects that the train 20 has entered the track.

When the data processing device 7 activates the stop position determination program, the data processing device 7 acquires train vehicle type data from the train information device. The data processing device 7 reads out the stop target position P0 and the stop error positions P1 and P2 on the platform 2 determined for each vehicle type from the vehicle type data, and sets the fixed-position stop ranges P1 to P2.

Subsequently, the data processing device 7 calls the fixed-position stop sensor output acquisition function, and determines whether or not the train 20 is located at the fixed-stop position and the train 20 is stopped (step S31). This process is the same as the process shown in FIG.

Next, the data processing device 7 acquires the presence / absence detection signal from the photoelectric sensor 11 constituting the presence / absence detection sensor 51 (step S32). The photoelectric sensor 11 constituting the presence / absence detection sensor 51 outputs an on-level presence / absence detection signal when the reflected light of the emitted light is detected.

The data processing device 7 determines whether or not the fixed position determination signal, the stop determination signal, and the presence / absence detection signal are all on (step S33).
If the fixed position determination signal, the stop determination signal, and the presence / absence detection signal are all on (step S33: YES), the data processing device 7 outputs a stop confirmation signal to the external device 60 (step S34).

On the other hand, if at least one of the fixed position determination signal, the stop determination signal, and the presence / absence detection signal is at the off level, the data processing device 7 determines that the train 20 has not stopped at the fixed stop position (step S33). : NO), the process returns to step S31.

As described above, the stop position detection system according to the second embodiment of the present invention uses both the fixed-position stop sensor 50 and the photoelectric sensor 11 to determine that the train 20 is stopped at the fixed stop position. Therefore, the determination condition becomes stricter than the case where the train 20 is determined to be stopped at the fixed stop position only by the fixed position stop sensor 50, and the fixed position stop determination can be performed with high reliability.

Further, when the fixed-position stop sensor 50 is already installed, the stop position detection system according to the second embodiment of the present invention can be used only by attaching the photoelectric sensor 11 to the movable platform fence 1. Therefore, it is possible to easily introduce a stop position detection system that performs a highly reliable fixed-position stop determination.

(Modification example)
In the above embodiment, the photoelectric sensor 11 emits light, receives reflected light, and detects that the train is on an adjacent track when the reflected light is received. The present invention is not limited to this. For example, one of the light emitting device and the light receiving device may be arranged in the fixed portion 4, and the other of the light emitting device and the light receiving device may be arranged at positions facing each other across the orbit. In this case, if the light emitted from the light emitting device is detected by the light receiving device, the vehicle is not located, and if the light emitted from the light emitting device is not detected by the light receiving device, it is determined that the vehicle is located. Ru.

The presence / absence detection sensor 51 that detects the presence / absence of the train 20 on the track is not limited to the photoelectric sensor 11. A flat surface sensor 12 may be used instead of the photoelectric sensor 11. The planar sensor 12 irradiates a plurality of sensor beams such as an infrared laser from the light projecting unit in a planar shape, and receives the reflected light or the passing light thereof by one or a plurality of light receiving elements. Therefore, the irradiation range of the sensor beam is wider than that of the photoelectric sensor 11. Therefore, since the train 20 that has entered the track can be detected in a wide sensor beam irradiation range, the detection accuracy is improved and the reliability of the presence / absence detection information is improved.

When the flat surface sensor 12 is used, not only the flat surface sensor 12 can be attached to the fixed portion 4, but also the flat surface sensor 12 can be suspended from the roof of the platform 2.

(Embodiment 3)
The stop position detection system according to the third embodiment of the present invention will be described with reference to FIGS. 8 to 10.

As shown in FIG. 8, a data processing device 7 is attached to the fixed portion 4 adjacent to the stop target position P0. The Nth photoelectric sensor 13n is attached to the fixed portion 4 arranged in the X-axis direction with the door bodies 6a and 6b interposed therebetween from the fixed portion 4 to which the data processing device 7 is attached. Further, from the fixed portion 4 to which the Nth photoelectric sensor 13n is attached, to the plurality of fixed portions 4 arranged in the + X direction with the door bodies 6a and 6b interposed therebetween, the N-1 photoelectric sensor 13n-1 to the first. 1 n-1 photoelectric sensors up to the photoelectric sensor 13a are attached one by one. The N photoelectric sensors 11 from the first photoelectric sensor 13a to the Nth photoelectric sensor 13n are referred to as a photoelectric sensor group 14.

The operation of the stop position detection system in the third embodiment is the same as the operation of the first embodiment described above, except for the operation of the photoelectric sensor group 14 as the presence / absence detection sensor 51.

The operation of the photoelectric sensor group 14 will be described with reference to FIG. When the train 20 enters the track in contact with the platform 2, each photoelectric sensor 11 of the photoelectric sensor group 14 sequentially detects the train 20 and outputs an on-level presence / absence detection signal. As shown in FIG. 9A, when the train 20 enters the track in contact with the platform 2 toward the stop target position P0, the first photoelectric sensor 13a detects the train 20 and an on-level presence / absence detection signal. Is output. Since the second photoelectric sensor 13b, the third photoelectric sensor 13c, ..., The Nth photoelectric sensor 13n does not detect the train 20, it outputs an off-level presence / absence detection signal.

Further, as the train 20 advances, as shown in FIG. 9B, the second photoelectric sensor 13b detects the train 20 and outputs an on-level detection signal. Since the third photoelectric sensor 13c, ..., The Nth photoelectric sensor 13n does not detect the train 20, it outputs an off-level presence / absence detection signal. As the train 20 advances toward the stop target position P0, each photoelectric sensor of the photoelectric sensor group 14 sequentially detects the train 20 and outputs an on-level presence / absence detection signal. Finally, as shown in FIG. 9C, all the photoelectric sensors from the first photoelectric sensor 13a to the Nth photoelectric sensor 13n detect the train 20 and output an on-level presence / absence detection signal.

A stop position determination program as shown in FIG. 10 is installed in the data processing device 7.
The data processing device 7 activates the plurality of photoelectric sensor stop position determination programs, for example, when an incoming line sensor (not shown) detects the approach of the train 20.
When the data processing device 7 activates the stop position determination program, the data processing device 7 acquires train vehicle type data from the train information device. The data processing device 7 reads out the stop target position P0 and the stop error positions P1 and P2 on the platform 2 determined for each vehicle type from the vehicle type data, and sets the fixed-position stop ranges P1 to P2.

Next, the data processing device 7 calls the fixed-position stop sensor output acquisition function, and acquires the fixed-position determination signal and the stop determination signal by the process shown in FIG. 5 (step S41). Next, the data processing device 7 acquires the presence / absence detection signal including the detection information from the photoelectric sensor group 14 together with the time stamp (step S42).

The data processing device 7 determines whether or not both the fixed position determination signal and the stop determination signal are ON (step S43). If both are on, the process proceeds to step S44, and if at least one is off, the process returns to step S41.

In step S44, the data processing device 7 determines whether or not the first photoelectric sensor 13a to the Nth photoelectric sensor 13n sequentially output an on-level detection signal (step S44). Regarding whether or not the first photoelectric sensor 13a to the Nth photoelectric sensor 13n sequentially output the on-level detection signal, it is desirable to set a standard for allowing a certain false detection.

When the data processing device 7 determines that the first photoelectric sensor 13a to the Nth photoelectric sensor 13n sequentially output the on-level detection signal (step S44: YES), the data processing device 7 outputs the stop confirmation signal to the external device 60 (step). S45).

On the other hand, in the data processing device 7, the first photoelectric sensor 13a to the Nth photoelectric sensor 13n do not sequentially output the on-level detection signal, for example, the Nth photoelectric sensor 13n is still off, or the Nth photoelectric sensor 13n is still off. If only the photoelectric sensor 13n is on (step S44: NO), the process returns to step S41.

As described above, the stop position detection system according to the third embodiment of the present invention uses both the fixed-position stop sensor 50 and the photoelectric sensor group 14 to determine that the train 20 is stopped at the fixed stop position. Therefore, the determination condition becomes stricter than the case where the train 20 is determined to be stopped at the fixed stop position only by the fixed position stop sensor 50, so that the fixed position stop determination can be performed with high reliability.

Further, when the fixed-position stop sensor 50 is already installed, the stop position detection system according to the present embodiment can be used only by attaching the photoelectric sensor group 14 to the movable platform fence 1. Therefore, it is possible to easily introduce a stop position detection system that performs a highly reliable fixed-position stop determination.

(Modification example)
The photoelectric sensor used in the third embodiment is the same as the photoelectric sensor 11 shown in the second embodiment, but the present invention is not limited to this, and the planar sensor 12 may be used.

(Embodiment 4)
The stop position detection system according to the fourth embodiment of the present invention will be described with reference to FIGS. 6 and 11. In FIG. 6A, a camera 15 is provided in place of the photoelectric sensor 11 attached to the fixed portion 4. The other configurations are as described in the second embodiment. The camera 15 periodically collects an image on the orbital side and outputs the image data to the data processing device 7.

The operation of the stop position detection system in the fourth embodiment is the same as the operation of the first embodiment described above except that the photoelectric sensor 11 is used as the presence / absence detection sensor 51.

The stop position determination program shown in FIG. 10 is installed in the data processing device 7.
The data processing device 7 activates this stop position determination program in response to, for example, a sensor (not shown) detecting that the train 20 has entered the track.
When the data processing device 7 activates the stop position determination program, the data processing device 7 acquires train vehicle type data from the train information device. The data processing device 7 reads out the stop target position P0 and the stop error positions P1 and P2 on the platform 2 determined for each vehicle type from the vehicle type data, and sets the fixed-position stop ranges P1 to P2.

Subsequently, the data processing device 7 calls the fixed-position stop sensor output acquisition function shown in FIG. 5, and acquires the fixed-position determination signal and the stop determination signal from the fixed-position stop sensor 50 (step S51).
Subsequently, the data processing device 7 acquires image data on the orbit side from the camera 15 (step S52).
The data processing device 7 determines whether or not the image data acquired from the camera 15 matches the image of the vehicle body of the train 20 scheduled to enter the line (step S53). For example, the data processing device 7 obtains the number of pixels corresponding to the train 20 in the image data. For example, the number of pixels of color and brightness that reacts to the vehicle body is obtained. For example, the number of pixels of black or a dark-colored pixel similar to black is acquired. If the number of pixels of the vehicle body acquired from the image data is equal to or greater than the predetermined reference number of pixels for identifying the vehicle body, it is determined that the train 20 exists on the track (step S53: YES). , Proceed to step S54. If the number of pixels of the vehicle body acquired from the image data is equal to or less than the reference number of pixels, it is determined that the train 20 does not exist on the track (step S53: NO), and the process returns to step S51.

If both the fixed position determination signal and the stop determination signal are on-level in step S54, the data processing device 7 determines that the train 20 has stopped at the fixed stop position (step S54: YES), and stops. The confirmation signal is output to the external device 60 (step S55).
On the other hand, the data processing device 7 determines that the train 20 has not stopped at the fixed stop position unless one or both of the fixed position determination signal and the stop determination signal is on level (step S54: NO). The process returns to step S51.

As described above, the stop position detection system according to the present embodiment uses both the fixed-position stop sensor 50 and the camera 15 to determine that the head portion of the train 20 is stopped at the fixed-stop position. Therefore, the determination condition becomes stricter than the case where it is determined that the head portion of the train 20 is stopped at the fixed stop position only by the fixed position stop sensor 50, and it is possible to perform a highly reliable fixed position stop determination. can.

Further, when the fixed-position stop sensor 50 is already installed, the stop position detection system according to the present embodiment can be used simply by attaching the camera 15 to the movable platform fence 1. Therefore, it is possible to easily introduce a stop position detection system that performs a highly reliable fixed-position stop determination.

(Modification example)
When the camera 15 is used to detect the presence or absence of the train 20 on the track, it should not only be attached (or built in) to the fixed portion 4 of the movable platform fence 1 but also suspended from the roof of the platform. Is also possible.
Further, in the above embodiment, the data processing device 7 has obtained the number of pixels corresponding to the train 20 in the image data, but a pattern matching method may be used.

The technical scope of the present invention is not limited to the above embodiments and modifications. The present invention can be freely applied, modified or improved as far as the technical idea described in the claims is concerned.

The present invention can be suitably used for movable platform fences.

1 Movable platform fence, 2 platform, 4 fixed part, 5 boarding / alighting passage, 6a, 6b door body, 7 data processing device, 8 RFID reader, 9 antenna, 11 photoelectric sensor, 12 plane sensor, 14 photoelectric sensor group, 15 camera , 20 trains, 23 RFID tags, 50 fixed position stop sensor, 501 first distance sensor, 502 second distance sensor, 503 control unit, 51 presence / absence detection sensor, 60 external device

Claims (3)

A fixed-position stop determination means that is installed in front of or behind the fixed-stop position of a train on the track and detects the position of the train and the state of the train.
At the fixed stop position, the presence / absence detecting means for detecting the presence / absence of the train and the presence / absence detecting means
When the position of the train detected by the fixed-position stop determination means is within a preset range, the train is in a stopped state, and the presence / absence detecting means detects the presence of the train. , A discriminating means for outputting information indicating the existence of the train to an external device.
A medium for holding vehicle information is placed on the train.
The presence / absence detection means includes a presence / absence detection sensor that acquires vehicle information from the medium.
It said discriminating means, trains indicated by the acquired vehicle information, determines whether or not to match the train incoming appointment, if it matches is determined that the train is present,
Moreover,
The external device is a movable platform fence installed on a platform adjacent to the track.
The movable platform fence includes a door body that can be opened and closed, a door pocket in which the door body is housed, and a control unit that controls the door body.
The presence / absence detecting means includes a sensor attached to the door pocket of the movable platform fence and collecting information for determining the presence / absence of a vehicle.
The control unit of the movable platform fence controls the door body of the movable platform fence based on the determination result output from the determination means.
Stop position detection system. The stop position detection system according to claim 1 , wherein the presence / absence detection sensor includes a flat surface sensor. A fixed-position stop determination means that is installed in front of or behind the fixed-stop position of a train on the track and detects the position of the train and the state of the train.
At the fixed stop position, the presence / absence detecting means for detecting the presence / absence of the train and the presence / absence detecting means
When the position of the train detected by the fixed-position stop determination means is within a preset range, the train is in a stopped state, and the presence / absence detecting means detects the presence of the train. , A discriminating means for outputting information indicating the existence of the train to an external device.
The external device is a movable platform fence installed on a platform adjacent to the track.
The movable platform fence includes a door body that can be opened and closed, a door pocket in which the door body is housed, and a control unit that controls the door body.
The presence or absence detecting means, said movably mounted platform fence of the door pocket, provided with a sensor for settling the vehicle both information from a medium that holds a vehicle information arranged in the train,
The discriminating means determines whether or not the train indicated by the collected vehicle information matches the train scheduled to enter, and if so, determines that a train exists.
The control unit of the movable platform fence controls the door body of the movable platform fence based on the determination result output from the determination means.
Stop position detection system.

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