JP2003252201A - Foreign matter detector for passenger door in rolling stock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a foreign matter detector for passenger door in a rolling stock, capable of detecting if small foreign matter which cannot be detected by even a door close sensor is caught in the door. <P>SOLUTION: A door monitor camera 1 is fitted at the upper position of an outer meeting part of the passenger door 11 in the rolling stock 10. The door monitor camera 1 acquires an image before door open and an image after getting on/off of the passenger and comparatively processes both of them, thus detection of foreign matter near the door and display of either of the above images can be provided. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foreign matter detecting device for a passenger door of a railway vehicle.

[0002]

2. Description of the Related Art The operation of a passenger door of this type will be described with reference to FIG. 10. First, the opening operation of the door will be described. That is, when the vehicle decelerates and the 5 km / h detection relay is turned off, the opening / closing switch at the front or rear of the vehicle becomes operable. The crew member turns off the open / close switch when the vehicle is stopped. Open / close switch OFF
The command enters a door opening / closing control unit (not shown), and the door opening / closing control unit gives an opening command to the door opening / closing driver of the vehicle to open the door.

On the other hand, when the door is closed, the 5 km / h detection relay is OFF, and the crew member turns on the open / close switch in anticipation of the passenger getting on and off the passenger. The ON command of the opening / closing switch enters a door opening / closing control unit (not shown), and the door opening / closing control unit gives a closing command to the door opening / closing driver of the vehicle to close the door.

In the mechanism for opening and closing the door,
A door closing sensor such as a limit switch that operates depending on the mechanical position of the door is provided to detect the closed state of the door. In addition, the closed state of the door is also visually confirmed by the crew.

[0005]

In the passenger door of such a railway vehicle, the door closing sensor may not be able to detect when the foreign matter caught is small. In this case, it is determined that the door is closed, and the vehicle is closed. Is ready to run.

For example, there is a case where a foreign matter is small and is like a shoulder bag, and a door is caught by a door string, and passengers are outside the train station (station platform) and inside the train. In order to prevent an accident due to vehicle departure by detecting a foreign object while there is such a foreign object trapped, a watchman may carefully monitor the door assembly, but there is a limit naturally.

An object of the present invention is to provide a foreign matter detection device for a passenger door in a railway vehicle that can detect whether or not a small foreign matter that cannot be handled by a door closing sensor is caught in the door.

[0008]

In order to achieve the above object, the invention according to the present invention provides a door monitoring camera installed in the vicinity of a door meeting portion for passengers of a railway vehicle, and a door monitoring camera. It is characterized by further comprising: processing means for acquiring at least one of a foreign object in the vicinity of the door and a display of the image by acquiring an image before door opening and an image after getting on and off the door and comparing the images. It is a foreign matter detection device for a passenger door in a railway vehicle.

According to the present invention, a door monitoring camera is provided above the meeting portion of each door, and a pre-door opening image and a boarding / alighting image, which are reference images acquired when the door is closed by the door monitoring camera, are displayed. By performing the comparison process, the presence / absence of a foreign matter is determined, the determination result is presented to the crew, and at the same time, the image of the corresponding portion is also transmitted. When there are a plurality of corresponding images, the desired position of the crew can be selected. The crew can confirm the safety by visually observing the determination result of the image processing and the corresponding image.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a foreign matter detecting device for a passenger door in a railway vehicle according to the present invention will be described below with reference to the drawings.

In FIG. 1, a door monitoring camera 1 is provided in the vicinity of the meeting portion of all the passenger doors 11 of the vehicle 10, for example, above the outside of the meeting portion. As shown in FIG. 2 in detail, a door monitoring camera 1 is attached to the center of the door upper casing 16 located above the door 11 together with the existing left and right door closing sensors 2. Therefore,
When the image is acquired by the door monitoring camera 1 while the vehicle 10 is stopped at the platform 17, for example, the image 6A shown in FIG. 3 is obtained. Reference numeral 1 in the image 6A shown in FIG.
Reference numeral 1'is an image portion of the door 11, 12 'is an image portion of the elastic body 12 made of a rubber band or the like at the meeting portion of the door 11, and 17' is an image portion of the platform 17. Incidentally, reference numeral 15 in FIG.
Is the floor of the vehicle 10.

The door monitoring camera 1 acquires an image before door opening as a reference image and an image after boarding / alighting as a determination image. The acquisition mode of the image before door opening as a reference image is, for example, as shown in FIG. 5 and the acquisition form of the image after boarding / alighting as a determination image includes the examples shown in FIGS. 6, 7, and 8. The acquisition mode of these images will be described later.

The image of the door monitoring camera 1 is sent to the image processor 5 via the image selector 3 and also sent to the crew monitor 6 provided in the crew cabin via the image transmitter 4.

Further, the image processor 5 is provided on the crew member monitor 6.
A foreign object detection signal or the like is sent from the device. Here, the crew member monitor 6 displays a foreign object detection signal from the corresponding door, displays all or selected images from the door monitoring camera 1 along with an instruction to select a door monitoring camera. .

The image processor 5 compares the image before door opening as a reference image with the image after getting in and out as a determination image, and when foreign matter not appearing in the image before door opening appears in the image after getting in and out, A foreign object detection signal is generated for the door of the door monitoring camera 1 that has acquired the image.

In FIG. 1, reference numeral 13 is a door opening / closing switch, 14 is a 5 km / h detection relay, and a door reopening / closing switch is also provided in the passenger compartment.

Next, referring to FIG. 4, a first example of a form of acquiring a pre-door opening image as a reference image will be described. Figure 4
As shown in, the reference image is acquired when the crew member turns on (opens) the door opening / closing switch.

In obtaining such a reference image, an image before the door is opened after the vehicle is stopped can be used as the reference image.

Next, with reference to FIG. 5, a second example of the acquisition mode of the image before door opening will be described as the reference image. As shown in Fig. 5, the 5km / h detection relay is OFF (5k / h
m / h or less), an image is acquired at any time, and the image is a few images before the time when the open / close switch is turned off.

According to the acquisition of such a reference image, it is possible to acquire the reference image before the door is opened immediately after the stable stop even when the timing such as the transmission delay is delayed in transmitting the image.

Next, with reference to FIG. 6, a first example of the acquisition form of the image after boarding / alighting as a determination image will be described. That is, in order to determine the presence or absence of foreign matter, the determination is performed using the acquired reference image and the image after the door is closed. As the image for making the determination, when the detection signal from the door closing sensor 2 is detected as shown in FIG. 6, the image is acquired at any time. The determination is made by comparing the reference image and the image acquired at any time after the door closing detection signal is detected by the image processor 5, and a comparison determination process is performed until a foreign substance is no longer detected (until there is no change from the reference image). To continue. The presence / absence of foreign matter, the location, and the image selected by the crew member are displayed on the crew member monitor 6.

In this embodiment, when the foreign matter is hit in determining the foreign matter, the crewmember's monitor 6 can be surely notified to the crewmember until the foreign matter is eliminated, and when the foreign matter is eliminated, the crewmember monitor is also used. In step 6, it is possible to promptly notify the crew that the foreign matter has disappeared.

Next, with reference to FIG. 7, a second example of the acquisition form of the image after boarding / alighting as a determination image will be described. That is, as the image for determining the presence / absence of a foreign substance, the image is acquired whenever the door opening / closing signal OFF is detected as shown in FIG. The determination is made by the image processor 5 between the reference image and the image acquired at any time after the door closing command signal is detected.
The comparison and determination process is continued until the foreign matter is no longer detected by the comparison determination (until there is no change from the reference image). The presence / absence of foreign matter, the location, and the image selected by the crew member are displayed on the crew member monitor 6.

In this embodiment, when the foreign matter is judged, the judgment image can be judged just before the door is closed by setting the door opening / closing signal OFF of the crew member at the timing, and the image processing is performed after the door is surely detected. Foreign matter can be processed by the vessel 5, and the reliability is improved.

Next, with reference to FIG. 8, a third example of the acquisition form of the image after boarding / alighting as a determination image will be described. That is, as for the image for determining the presence or absence of a foreign object, as shown in FIG. 8, an image is acquired at any time from the time when the crew member issues a door closing command, compared with the reference image, and image processing is performed only for whether the door is closed. After the door 5 is closed, the image acquired next is compared with the reference image as a determination image for foreign object detection. If a foreign object is detected, the foreign object is no longer detected (before opening the door). Until it becomes the same as the image of
The foreign substance determination process is continued from the image acquisition.

In this embodiment, first, the processing for determining whether or not the door is closed is performed in a short time, and then the processing for determining the foreign matter is performed in the determination image, so that the foreign matter can be determined immediately after the door is closed, and the processing time can be shortened. Can be realized. As described above, in the present embodiment, the foreign matter detection device according to the present embodiment operates as follows by adopting either one of the acquisition mode of the image before door opening and the acquisition mode of the image after getting on / off the door. To do. That is, the vehicle stops and the door 11 of the vehicle 10
The image immediately before opening is acquired by the door monitoring camera 1 and stored in the image processor 5 as a reference image. After that, the door 11 is opened, people have finished getting on and off, and the door 11 of the vehicle 10 is closed.
The image acquired by the door monitoring camera 1 after the
The image processor 5 compares an image with a reference image, which has been acquired in advance, just before the door 11 is opened, and determines a foreign substance. When it is determined that there is a foreign substance, the image processor 5 displays the presence or absence of the foreign substance on the monitor 6. When the crew makes an image request for the door with foreign matter, the image of the door monitoring camera 1 is selected by the image selector 3 and displayed on the monitor 6 by the image transmitter 4, so that the crew can make the final judgment. it can.

With the above operation, even if the door is closed and the door closing sensor reacts and the vehicle is ready to start, the image of the door meeting portion is processed and the foreign matter is detected, so that the safety of passengers can be ensured. Becomes

The foreign matter detection device described above can be applied to a door mechanism. That is, as shown in FIG. 9, the door opening / closing control unit 19 takes in the output of the 5 km / h detection relay, the output of the opening / closing switch, and the output of the re-opening / closing switch, and outputs the output of the 5 km / h detection relay. When it is OFF, the output of the open / close switch is accepted. Therefore, the vehicle decelerates, the 5km / h detection relay is turned off, and the open / close switch is turned off.
Then, the door opening / closing control unit 19 causes the door opening / closing driver 1 to
An opening command is given to 8 to open the door.

On the other hand, when the open / close switch is turned on while the 5 km / h detection relay is off, the door open / close control unit 19
Gives a closing command to the door opening / closing driver 18 to close the door.

Here, with the open / close switch turned on,
If any of the door closing sensors 2 remains OFF, by operating the reopening / closing switch, the OFF
The door of the door closing sensor 2 is opened and closed again.

According to the present invention, when a foreign object whose door closing sensor 2 is not turned off is caught in the door, the door opening / closing control section 19 which takes in the foreign object detection signal causes the door closing sensor 2 to be closed.
The door opening / closing driver 18 is instructed to open / close the door with a foreign object that is not turned off.

As described above, according to the present embodiment, the existing door closing sensor 2 and the foreign matter detecting device of the present invention are used to pinch a foreign object without closing the door and / or the door closing sensor 2 does not operate. It is also possible to automatically open and close the door again.

[0033]

As described above, according to the present invention, even if the door closing sensor detects when the door is closed and the vehicle is ready for departure, foreign matter at the entrance and exit that cannot be detected by the door closing sensor is used as a reference image of the door association section. It is possible to provide a foreign matter detection device that can ensure the safety of passengers by detecting the foreign matter by comparing the determination images with each other.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of a foreign matter detection device for a passenger door in a railway vehicle according to the present invention.

FIG. 2 is a view showing a mounting state of a door monitoring camera in the same embodiment.

FIG. 3 is a diagram showing an example of an image obtained by a door monitoring camera.

FIG. 4 is a timing chart showing a first example of acquisition of an image before door opening as a reference image in the present embodiment.

FIG. 5 is a timing chart showing a second example of acquisition of an image before door opening as a reference image in the present embodiment.

FIG. 6 is a timing chart showing a first example of acquisition of an image after getting on and off as a determination image in the present embodiment.

FIG. 7 is a timing chart showing a second example of acquisition of an image after boarding / alighting as a determination image in the present embodiment.

FIG. 8 is a timing chart showing a third example of acquisition of an image after boarding / alighting as a determination image in the present embodiment.

FIG. 9 is a diagram showing a usage pattern of a foreign matter detection signal by the foreign matter detection apparatus of the present embodiment.

FIG. 10 is a timing chart showing an opening / closing operation of a passenger door in a railway vehicle.

[Explanation of symbols]

1 ... Door monitoring camera 2 ... Door closing sensor 3 ... Image selector 4 ... Image transmitter 5 ... Image processor 6 ... Crew monitor 10 ... Vehicle 11 ... Door 12 ... Elastic body 13 ... Open / close switch 14 ... 5km / h detection relay 15 ... Vehicle floor 16 ... Door upper casing 17… Station platform 18 ... Door opening / closing driver 19 ... Door opening / closing control unit

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Mitsuyuki Osawa             2-2-2 Yoyogi, Shibuya-ku, Tokyo Tohnichi             Inside the passenger railway (72) Inventor Hiroshi Amako             2-2-2 Yoyogi, Shibuya-ku, Tokyo Tohnichi             Inside the passenger railway (72) Inventor Kokonoda Mayumi             2-2-2 Yoyogi, Shibuya-ku, Tokyo Tohnichi             Inside the passenger railway F term (reference) 2E052 AA09 CA06 EA13 EB01 EC03                       GA06 GB06 GB13 GB15 GC01                       HA01 LA06

Claims (6)

[Claims] 1. A door monitoring camera installed in the vicinity of a passenger door of a rail car, and a door opening image as a reference image and a boarding / alighting image as a determination image, which are acquired by the door monitoring camera. A foreign matter detection device for a passenger door in a railway vehicle, comprising: a processing unit that performs at least one of detection of a foreign matter near the door and display of the image by performing a comparison process. 2. The foreign matter detection device for a passenger door of a railway vehicle according to claim 1, wherein the image before door opening is an image acquired immediately after a crew member detects a door opening handling signal. 3. The image before opening the door is acquired periodically when the 5 km / h detection relay is turned off,
The foreign matter detection device for a passenger door in a railway vehicle according to claim 1, wherein the image is a few images before the door closing detection signal was turned off. 4. The boarding / alighting image is an image when a door closing detection signal is detected, and the processing unit compares the image and the image before opening the door to perform a foreign object detection process to detect a foreign object. The foreign matter detection device for a passenger door in a railway vehicle according to claim 1, wherein an image is acquired at a constant cycle and the foreign matter determination processing is continued until it does not occur. 5. The boarding / alighting image is an image when a door closing command is detected, and the processing means compares the image and the pre-door opening image to perform a foreign object detection process to detect a foreign object. The foreign matter detection device for a passenger door in a railway vehicle according to claim 1, wherein the foreign matter detection processing continues by acquiring an image at a constant cycle until it disappears. 6. The boarding / alighting image is an image when a door closing command is detected, and the processing means performs a process of whether or not the door is closed by the image, and the image is judged after the door is closed. 2. The railway vehicle according to claim 1, wherein the foreign matter detection process is performed by comparing the image with the image before opening the door, the image is acquired at a constant cycle until the foreign matter is no longer detected, and the foreign matter determination process is continued. Foreign object detection device for passenger doors.