Station platform monitoring system and station platform monitoring method

Abstract

To provide a station platform monitoring system in which a person detection device that complements camera image is provided, the detection device detects last-minute boarding of a passenger and notifies a crew of the last-minute boarding together with the camera image, and a station platform monitoring method.SOLUTION: In a station platform monitoring system, a camera device 11 on a station platform 10 photographs an image near a door of a train 20 and outputs image data, a radar device 12 detects movement of a person outside an imaging range of the camera device 11 and outputs a detection signal if the detected movement corresponds to a condition of last-minute boarding, a signal control unit 13 synthesizes the image data and the detection signal and transmits the synthesized data and image to the train 20 via a ground radio 14, an on-board radio 21 of the train 20 receives the synthesized data and image and outputs the same to a monitoring device 22 and a warning indicator 23 of the train 20, the monitoring device 22 displays the image data, and the warning indicator 23 performs warning display on the basis of the detection signal.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a monitoring system for monitoring station platforms, and more particularly to a station platform monitoring system and method that allow train crew members to grasp the status of station platforms and improve operational safety. [Background technology]

[0002] [Prior Art] In conventional station platform monitoring systems, cameras that capture images of the area around the doors of train cars are installed on the station platform, and the images captured by the cameras are displayed on a monitor device inside the train cars, allowing train crew members to check the images and open and close the train doors. In particular, on trains operated by a single driver, the driver had to open and close the doors.

[0003] [Related Technology] As a related prior art, there is Japanese Patent Laid-Open Publication No. 10-304346 entitled "ITV System for Safety Confirmation" (Patent Document 1). Patent Document 1 discloses an ITV (Industrial Television) system (industrial monitoring system) that can grasp and check the status of passengers on station platforms using television images, thereby ensuring safe train operation. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 10-304346 Summary of the Invention [Problem to be solved by the invention]

[0005] However, with conventional station platform monitoring systems, crew members check camera footage to open and close train doors, which makes it difficult to grasp the overall situation on the station platform when there are many connected cars.In addition, increasing the number of cameras makes the checking process more complicated, which is a problem.

[0006] Furthermore, Patent Document 1 does not describe a configuration that uses a detection device that detects people to complement camera images, making it easier to grasp the situation on the station platform and improving the safety of train operations.

[0007] The present invention has been made in consideration of the above-mentioned situation, and aims to provide a station platform monitoring system and method that includes a person detection device that complements camera footage, detects passengers rushing to board a train using the detection device, and notifies train crew of the rush to board along with the camera footage. [Means for solving the problem]

[0008] The present invention, which solves the problems of the above-mentioned conventional examples, is a station platform monitoring system that monitors station platforms, and is characterized by having a camera device that takes pictures of the area around the train doors on the station platform and outputs the video data, a detection device that detects the movement of people outside the camera device's shooting range and outputs a detection signal when specific conditions are met, a ground radio that inputs the video data and detection signal and transmits it to the train, a display device installed on the train that displays the video data and detection signal, and an on-board radio that receives the video data and detection signal from the ground radio and outputs it to the display device.

[0009] The present invention is characterized in that in the above-mentioned station platform monitoring system, the detection device detects the direction and speed of a person's movement, and when it determines from the direction and speed of movement that the person is rushing to board the train, it outputs a detection signal.

[0010] The present invention is characterized in that, in the above-mentioned station platform monitoring system, a plurality of detection devices and camera devices are provided, a specific detection device is associated with a specific camera device, video data and detection signals are transmitted in pairs from a ground radio, and the train's display device displays the paired video data and detection signals.

[0011] The present invention is characterized in that in the above-mentioned station platform monitoring system, when an instruction to close the doors is given while video data and detection signals are being displayed on the train, the detection signals are further highlighted on the display device.

[0012] The present invention is characterized in that, in the above-mentioned station platform monitoring system, the display device edits and displays the detection signal within the display screen that displays the video data, or displays the detection signal on a display device separate from the display screen.

[0013] The present invention is a station platform monitoring method for monitoring a station platform, characterized in that a camera device photographs the area around the train doors on the station platform and outputs the video data, a detection device detects the movement of people outside the camera device's range of photography and outputs a detection signal if certain conditions are met, a ground radio transmits the video data and detection signal to the train, an on-board radio installed on the train receives and outputs the video data and detection signal from the ground radio, and a display device installed on the train displays the video data and detection signal output from the on-board radio. [Effects of the Invention]

[0014] According to the present invention, a station platform monitoring system is provided in which a camera device photographs the area around the train doors on the station platform and outputs the video data, a detection device detects the movement of people outside the camera device's shooting range and outputs a detection signal when certain conditions are met, a ground radio inputs the video data and detection signal and transmits it to the train, a display device is provided on the train and displays the video data and detection signal, and an on-board radio receives the video data and detection signal from the ground radio and outputs it to the display device.This has the effect of detecting passengers rushing to board the train and notifying the crew, making it easier to grasp the situation on the station platform and improving the safety of train operations. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 1 is a schematic diagram of the configuration of the present system. [Figure 2] FIG. 1 is an installation diagram of the system. [Figure 3] FIG. 1 is a schematic diagram of an example of a warning display (1). [Figure 4] FIG. 10 is a schematic diagram of an example of a warning display (2). [Figure 5] FIG. 10 is a schematic diagram of an example of a warning display (3). [Figure 6] FIG. 10 is a schematic diagram of an example of a warning display (4). [Figure 7] FIG. 10 is a flowchart showing processing in the radar device. DETAILED DESCRIPTION OF THE INVENTION

[0016] An embodiment of the present invention will be described with reference to the drawings. [Outline of the embodiment] In a station platform monitoring system (this system) according to an embodiment of the present invention, a camera device photographs the area around the train doors on the station platform and outputs the video data, and a detection device detects the movement of people outside the camera device's range of photography and outputs a detection signal if the conditions for rushing to board the train are met, the video data and detection signal are transmitted to the train by a ground radio, the video data and detection signal from the ground radio are received and output by an onboard radio installed on the train, and a display device installed on the train displays the video data and detection signal output from the onboard radio, thereby detecting passengers rushing to board the train and notifying the crew, making it easier to grasp the situation on the station platform and improving the safety of train operations.

[0017] [This system: Figures 1 and 2] This system will be described with reference to Figures 1 and 2. Figure 1 is a schematic diagram of the configuration of this system, and Figure 2 is a diagram showing the installation state of this system. As shown in Figure 1, this system is provided with a station platform 10 equipped with multiple camera devices 11, multiple radar devices 12, a signal control unit 13, and a ground radio 14, and a train 20 equipped with an on-board radio 21, multiple monitor devices 22, and multiple attention warning displays 23.

[0018] As shown in Figure 2, the arrangement of this system is such that radar device 12 detects (senses) areas on station platform 10 that are not photographed by camera device [A] 11 and camera device [B] 11 (outside the photographing range), for example, near the entrance / exit (entrance or exit) of the stairs to station platform 10. The area detected by the radar device 12 is indicated by a sector-shaped diagonal line in FIG. 2, and the movement of a person at the entrance to the staircase is detected.

[0019] Then, the image data captured by the camera device 11 and the detection signal detected by the radar device 12 are integrated by the signal control unit 13 and transmitted from the ground radio 14 to the train 20, received by the on-board radio 21, the image data is displayed on the monitor device 22, and attention-call information is displayed on the attention-call display 23.

[0020] [Parts of this system: Figures 1 and 2] Each part of this system will now be described in detail. [Device on station platform 10] First, each part of the station platform 10 will be described. A plurality of camera devices 11 are provided on the station platform 10, and capture images of the vicinity of the doors of a train 20 that has arrived at the station platform 10, and output the captured image data to a signal control unit 13. Usually, one camera device 11 captures images of multiple doors of the train 20 at the same time.

[0021] Multiple radar devices 12 are installed on the station platform 10 and sense areas that are not photographed by the camera devices 11 (areas outside the photographing range). When a passenger rushing to board the train is detected, the radar devices 12 output a detection signal to the signal control unit 13. In this system, the camera device 11 and the radar device 12 are provided in a one-to-one pair, but multiple radar devices 12 may be assigned to one camera device 11, and multiple camera devices 11 may be assigned to one radar device 12.

[0022] In addition, the radar device 12 detects passengers rushing to board the train by detecting the person's position, direction of movement, and speed of movement.If the person's movement is toward the door of the train 20 and there is a possibility that the person will board the train at the time the door is about to close based on their position and speed of movement, it determines that this constitutes a "rushing to board" and outputs a detection signal. Note that other detection devices than the radar device 12 may include LiDAR (Light Detection And Ranging) that uses laser light, a camera for object detection, and the like.

[0023] The signal control unit 13 receives the video data from the multiple camera devices 11 and the detection signals from the radar device 12, edits them, and outputs them to the terrestrial radio 14. Specifically, when there is a detection signal from the radar device 12, it is associated with the video data from the camera device 11 that is paired with the radar device 12, and the entire video data etc. is set in a transmission frame for a specific time unit.

[0024] The ground radio 14 receives the transmission frame from the signal control unit 13 , converts it into a radio signal, and transmits it to the train 20 . The ground radio 14 uses a transmitting antenna with narrow directivity, so that only the corresponding train 20 can receive the signal.

[0025] [Train 20 equipment] Next, each part of the train 20 will be described. The on-board radio 21 receives the radio signal from the ground radio 14 and outputs the video data captured by each camera device 11 from the received frame to the corresponding monitor device 22. In this case, if a detection signal is included, the detection signal is output to the corresponding attention-calling display 23. That is, the on-board radio 21 stores the correspondence between the camera device 11 and the monitor device 22, and the correspondence between the radar device 12 and the attention-call display 23. The monitor device 22 and the attention-calling display 23 are collectively referred to as a "display device" in the claims.

[0026] The monitor device 22 is provided in association with the camera device 11 and displays the video data. For example, the video data captured by the camera A in FIG.

[0027] The attention-calling display 23 is provided in association with the radar device 12 and displays a detection signal. For example, a detection signal detected by radar A in FIG.

[0028] In FIG. 1, the monitor device 22 and the attention-calling display 23 are shown as separate devices, but attention-calling information may be displayed on the display screen of the monitor device 22. In this case, the video data and the detection signal are input to the monitor device 22, and attention-calling information is generated from the detection signal and edited to be incorporated into the video data.

[0029] [Examples of warning signs: Figures 3-6] Next, examples of attention-calling displays in this system will be described with reference to Figures 3 to 6. Figure 3 is a schematic diagram of attention-calling display example (1), Figure 4 is a schematic diagram of attention-calling display example (2), Figure 5 is a schematic diagram of attention-calling display example (3), and Figure 6 is a schematic diagram of attention-calling display example (4). 3 and 4 show an example in which a warning display 23 is provided separately from the monitor device 22 and a warning sign is displayed on the warning display 23, and FIGS. 5 and 6 show an example in which warning information is displayed on the display screen of the monitor device 22.

[0030] [Example of warning display (1): Figure 3] In the example (1) of the warning display, as shown in FIG. 3, a small LED (Light Emitting Diode) warning indicator 23 is provided in the upper right corner of the monitor device 22, and the LED lights up or flashes based on a detection signal to display a warning. The LED attention indicator 23 can be provided at any position around the monitor device 22.

[0031] [Example of warning display (2): Figure 4] In the example (2) of the warning display, as shown in FIG. 4, a strip-shaped LED warning indicator 23 is provided on the right side of the monitor device 22, and the LED lights up or flashes based on the detection signal to display a warning. The LED attention indicator 23 can be provided on any side of the periphery of the monitor device 22.

[0032] [Example of warning display (3): Figure 5] In the example of the warning display (3), as shown in FIG. 5, the monitor device 22 receives video data and a detection signal from the on-board radio 21, generates text information for a warning from the input detection signal, and synthesizes the text information with the video data to display the warning. In Figure 5, text information warning of "approaching people" is displayed below the video data.

[0033] [Example of warning display (4): Figure 6] In the example of the warning display (4), as shown in FIG. 6, the monitor device 22 receives video data and a detection signal from the on-board radio 21, generates graphic information for a warning from the input detection signal, and synthesizes the graphic information with the video data to display the warning. In FIG. 6, graphic information in the form of an arrow to warn the viewer is displayed on the side of the video data.

[0034] [Detection signal output processing: Figure 7] The detection signal output process in the radar device 12 will be described with reference to Fig. 7. Fig. 7 is a flow chart showing the process in the radar device. The radar device 12 detects the position, direction of movement, and speed of movement of the person, and determines whether the person is moving in the direction of the train 20 (S1), and if it is in the direction of the train 20 (Yes), determines from the person's position and speed of movement whether the time they will arrive at the door of the train 20 is within a time (specific time range) before or after the door closes (S2). If it is not in the direction of the train 20 in the determination process S1 (No), the process returns to process S1.

[0035] In the judgment process S2, if the person's arrival time is not before or after the door is closed (No), the process returns to process S1, and if the person's arrival time is before or after the door is closed (Yes), it is recognized as a "running boarding" (S3) and a detection signal is output to the signal control unit 13 (S4).

[0036] [Highlighting of warning signs] An application example of a warning display will also be described. In this application example, if a train crew member issues an instruction to close the doors of train 20 despite a warning sign being displayed on train 20, the warning sign is displayed in emphasis to warn passengers that there is a high possibility that they will be caught in the doors if they rush to board the train. This prevents the train 20 from accidentally departing by hastily opening the doors in the event that a crew member presses the button to close the doors of the train 20 without noticing the warning display and a passenger rushing to board the train gets caught in the doors.

[0037] Specifically, when the door close button is pressed, a signal indicating the pressing is input to the on-board radio 21, and the on-board radio 21 outputs a highlighting signal to the attention warning display 23 that is issuing the warning, causing the attention warning display 23 to display the highlighting. Furthermore, when an attention-calling information display is being displayed within the monitor device 22, the on-board radio 21 outputs a signal for highlighting to the monitor device 22, causing the monitor device 22 to perform highlighting.

[0038] As a specific example of highlighting, in the LED attention-calling indicator 23 of FIGS. 3 and 4, the LED is flashed and the flashing interval is shortened. Furthermore, when characters are displayed on the monitor device 22 of FIG. 5, the characters are displayed in a blinking manner or the color of the characters is changed, and when an arrow is displayed on the monitor device 22 of FIG. 6, the arrow is displayed in a blinking manner or the color of the arrow is changed. Furthermore, when highlighting in FIGS. 3 to 6, a warning sound may be generated.

[0039] [Effects of the embodiment] According to this system, a camera device 11 photographs the area around the doors of a train 20 on a station platform 10 and outputs the video data, and a radar device 12 detects the movement of people outside the range of the camera device 11 and outputs a detection signal if certain conditions are met. The video data and detection signal are combined by a signal control unit 13 and transmitted to the train 20 via a ground radio 14. The video data and detection signal from the ground radio 14 are received by an on-board radio 21 installed on the train 20 and output to a monitor device 22 and a warning display 23 installed on the train 20. The monitor device 22 displays the video data, and the warning display 23 displays a warning based on the detection signal. This makes it possible to detect passengers rushing to board a train and notify the crew, making it easier to grasp the situation on the station platform and improving the safety of train operations. [Industrial Applicability]

[0040] The present invention is suitable for a station platform monitoring system and method that includes a person detection device that complements camera footage, detects passengers rushing to board a train using the detection device, and notifies train crew of the rush to board along with the camera footage. [Explanation of symbols]

[0041] 10...Station platform, 11...Camera device, 12...Radar device, 13...Signal control unit, 14...Terrestrial radio, 20...Train, 21...On-board radio, 22...Monitoring device, 23...Attention warning display

Claims

1. A station platform monitoring system for monitoring a station platform, a camera device that captures images of the area around the train doors on the station platform and outputs video data; a detection device that detects the movement of a person outside the image capturing range of the camera device and outputs a detection signal when a specific condition is met; a ground radio that receives the video data and the detection signal and transmits them to the train; a display device provided on the train that displays the video data and the detection signal; a train-mounted radio that receives the video data and the detection signal from the ground radio and outputs them to the display device;

2. The station platform monitoring system according to claim 1, wherein the detection device detects the direction and speed of a person's movement, and outputs a detection signal when it determines from the direction and speed that the person is rushing to board a train.

3. a plurality of the detection devices and the camera devices are provided, a specific detection device and a specific camera device are associated with each other, and the video data and the detection signal are transmitted as a pair from the terrestrial radio; 3. The station platform monitoring system according to claim 1, wherein the train display device displays the paired image data and the detection signal.

4. A station platform monitoring system as described in claim 1 or 2, characterized in that when an instruction to close the doors is given while the video data and the detection signal are being displayed on the train, the detection signal is further emphasized and displayed on the display device.

5. The station platform monitoring system according to claim 1 or 2, characterized in that the display device edits and displays the detection signal within a display screen that displays video data, or displays the detection signal on a display device separate from the display screen.

6. A station platform monitoring method for monitoring a station platform, comprising: A camera device captures images of the area around the train doors on the station platform and outputs the video data. a detection device detects the movement of a person outside the photographing range of the camera device and outputs a detection signal when a specific condition is met; a ground radio transmitting the video data and the detection signal to the train; an on-board radio provided on the train receives and outputs the video data and the detection signal from the ground radio; A station platform monitoring method, characterized in that a display device provided on the train displays the video data and the detection signal output from the on-board radio.

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