JP7166753B2 - Monitoring system and monitoring method - Google Patents

Description

FIELD OF THE INVENTION The present invention relates to a monitoring system that assists drivers and crews in efficiently checking passenger movements around train doors.

In a train system, a driver or a crew member (hereinafter simply referred to as a "crew member") confirms the safety of passengers moving on the platform by video, and controls the opening and closing of the doors. Images of passengers are captured by cameras installed on the vehicle body or on the platform. For example, in Japan, it is common to use a camera installed on a platform to display images on a platform monitor or a train cab monitor. On the other hand, for example, in England, a system in which a camera installed on the side of a vehicle body is used to display an image on a monitor in the driver's cab is common. These differences are due to differences in whether train operations and infrastructure are managed by the same operator or by different operators.
In the following, reference will be made to an in-vehicle camera type surveillance system in which a camera is installed on the vehicle body. For example, Patent Document 1 discloses a surveillance system in which a camera is placed adjacent to each door of a vehicle.

WO2015/145736

In Patent Document 1, the display area of the monitor is divided into a plurality of areas, and a plurality of camera images captured by a plurality of cameras are displayed in each area. Here, when the door of the train is closed, if the closing of the door is obstructed by some obstacle, the crew needs to confirm the safety of the passengers by checking the camera image showing the door. However, in the split display as described above, images from multiple cameras are displayed on a single monitor, so it is difficult for the crew to identify the door that cannot be closed while looking at the monitor and confirm safety in a short time. is not easy.

Moreover, in recent years, the number of cameras for monitoring has tended to increase, so the burden on crew members to check both monitors has increased. And as the number of cameras increases, the time required for crew to check passenger safety increases. Furthermore, as the number of cameras increases, the area on the monitor assigned to each camera becomes smaller. Therefore, when an obstacle is caught in a door, for example, it becomes difficult to check the image of the obstacle. It would be nice if the size of the monitor could be increased, but this is difficult to achieve due to the limited space in the driver's cab.

SUMMARY OF THE INVENTION The present invention has been made in view of the conventional circumstances as described above, and it is an object of the present invention to provide a mechanism that can reduce the burden of the work of checking the state of a door with an image when an abnormality is detected in closing the door. do.

In order to achieve the above objects, the monitoring system and monitoring method according to the present invention are configured as follows.
(1) In a monitoring system equipped with a plurality of cameras installed on a train for photographing the plurality of doors of the train and a monitor for displaying the door camera images photographed by the cameras, each door on the opening/closing side A display control unit for assigning and displaying a plurality of door camera images obtained by dividing the display area of the monitor respectively into a plurality of areas, wherein the display control unit detects an abnormality in the closing of one of the doors The door camera image of the door related to the abnormality is enlarged and displayed according to the situation.

(2) In the monitoring system described in (1) above, the display control unit performs the enlarged display using the entire display area.

(3) In the monitoring system described in (1) above, the display control unit controls two of the plurality of areas into which the display area is divided, excluding the area used for displaying the door camera image of the abnormal door. The enlarged display is performed using the above areas.

(4) The monitoring system according to (1) above further includes a plurality of in-vehicle cameras that respectively photograph the plurality of doors from inside the vehicle, and the display control unit enlarges and displays the door camera image of the abnormal door. In addition, an in-vehicle camera image of the door related to the abnormality is displayed.

(5) In the monitoring system described in (4) above, the display control unit separates the enlarged display of the door camera image of the abnormal door and the display of the in-vehicle camera image of the abnormal door. It is characterized by using a monitor.

(6) In the monitoring system described in (4) above, the display control unit displays the enlarged display of the door camera image of the abnormal door and the display of the in-vehicle camera image of the abnormal door in the same manner. It is characterized by using a monitor.

(7) In the monitoring system described in (6) above, the display control unit controls two of the plurality of areas into which the display area is divided, excluding the area used for displaying the door camera image of the abnormal door. The enlarged display is performed using the above areas, and the in-vehicle camera image is displayed using two or more other areas.

(8) In the monitoring system according to any one of (1) to (7) above, the train is provided with a door control unit for controlling opening and closing of each door, and the door control unit is configured to: In response to failure in closing the door, a signal indicating failure in closing the door is output and closing is retried, and when the number of failures in closing the door exceeds a predetermined value, the signal is continuously transmitted. The display control unit is characterized in that, when the continuous reception of the signal continues for a predetermined period of time, it is determined that the door corresponding to the door control unit that is the source of the signal has closed abnormally.

(9) In a monitoring method using a monitoring system equipped with a plurality of cameras installed on a train for photographing a plurality of doors of the train and a monitor for displaying door camera images photographed by the cameras, the opening and closing side A plurality of door camera images obtained by photographing each door are allocated to and displayed in a plurality of areas obtained by dividing the display area of the monitor, and when an abnormality in door closing is detected in one of the doors, the abnormality is detected. It is characterized in that the door camera image of the relevant door is displayed in an enlarged manner.

Advantageous Effects of Invention According to the present invention, it is possible to reduce the burden of the work of confirming the state of a door whose closing abnormality has been detected by video.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the structural example of the monitoring system based on 1st Example of this invention. 2 is a diagram showing an example of camera arrangement in the monitoring system of FIG. 1; FIG. 2 is a diagram showing an example of split display in the monitoring system of FIG. 1; FIG. 2 is a diagram showing a display example of a TMS monitor in the monitoring system of FIG. 1; FIG. FIG. 2 is a diagram showing an example of a sequence when an abnormality occurs in closing a door in the monitoring system of FIG. 1; FIG. 2 is a diagram showing an example of a processing flow when an abnormality occurs in closing a door in the monitoring system of FIG. 1; 2 is a diagram showing an example of enlarged display by the monitoring system of FIG. 1; FIG. FIG. 4 is a diagram showing another example of enlarged display by the monitoring system of FIG. 1; 2 is a diagram illustrating an example of division of a display area of a CCTV monitor in the surveillance system of FIG. 1; FIG. It is a figure which shows the structural example of the monitoring system based on 2nd Example of this invention. 11 is a diagram showing an example of camera arrangement in the monitoring system of FIG. 10; FIG. FIG. 11 is a diagram showing an example of enlarged display and in-vehicle display by the monitoring system of FIG. 10; 11 is a diagram showing another example of enlarged display and in-vehicle display by the monitoring system of FIG. 10; FIG.

A monitoring system according to an embodiment of the present invention will be described with reference to the drawings.
For example, as shown in FIGS. 1 and 2, the present invention includes a plurality of cameras (141 to 144) mounted on a train for photographing a plurality of doors (121 to 124) of the train, and In a monitoring system comprising a monitor (146) for displaying door camera images, a plurality of door camera images obtained by photographing each door on the opening/closing side are displayed by allocating them to a plurality of areas obtained by dividing the display area of the monitor. A control unit (145) is provided, and the display control unit controls to enlarge and display the door camera image of the abnormal door in response to the detection of an abnormality in closing of one of the doors.
Hereinafter, a monitoring system according to an embodiment of the present invention will be specifically described using examples.

(First embodiment)
FIG. 1 is a diagram showing a configuration example of a monitoring system according to the first embodiment. FIG. 2 is a diagram showing an example of camera arrangement in the monitoring system of FIG.
The monitoring system according to the first embodiment is applied to a train composed of six cars 101-106. In the train of this example, for example, the 1st to 3rd cars and the 4th to 6th cars have the same structure, and the 4th to 6th cars are reversed for the 1st to 3rd cars. Constructed by concatenating Each vehicle has two doors 121, 122 on one side and two doors 123, 124 on the other side. Each vehicle has door control units (“Door C.U.” in the figure) 131 to 134 for controlling the doors, corresponding to the doors 121 to 124, respectively. Door cameras 141 to 144 are installed. For convenience of explanation, FIG. or 143, 144) are shown.

The monitoring system of this example has a configuration in which a closed-circuit television (CCTV) system is connected to a train monitoring system (TMS). The CCTV system includes door cameras 141 to 144 provided for each door of each vehicle, a CCTV monitor 146 for displaying the door camera images captured by the door cameras 141 to 144, and CCTV control for controlling the display of the CCTV monitor 146. 145 (“CCTV CU” in the figure) and a switching hub (“HUB” in the figure) 161 that is mounted on each vehicle and transmits door camera images. The train management system includes door control units (“Door C.U.” in the figure) 131 to 134 provided for each door of each vehicle, a TMS monitor 136 that displays the operation status of the train including the door status, and a TMS control unit (“TMS CU” in the drawing) 135 that controls the display of the TMS monitor 136 . The TMS monitor 136 and CCTV monitor 146 are installed in the driver's cab of the leading or trailing vehicle. In addition, the TMS control unit 135 and the CCTV control unit 145 are also installed in the leading or trailing vehicle.

The door cameras 141-144 of each car are arranged so as to photograph the doors, the platform and the gap between the train and the platform. In this example, as shown in FIG. 2, two door cameras are arranged facing different directions between two front and rear doors on both sides of each vehicle. Further, each door camera is arranged between the door and the center of the vehicle, facing toward the center of the vehicle. That is, a front door camera attached to the vehicle body facing the rear door side monitors the surveillance area behind it. In addition, the surveillance area ahead is monitored by the rear door camera attached to the vehicle body facing the front door side.

Door camera images taken by the door cameras 141 to 144 are divided and displayed on the CCTV monitor 146 under the control of the CCTV control unit 145 . FIG. 3 shows an example of split display on the CCTV monitor 146. As shown in FIG. The display area of the CCTV monitor 146 is divided into a plurality of areas so that a plurality of camera images captured by door cameras installed on one side of the train can be displayed simultaneously. In this example, a total of 12 areas are provided by dividing the display area into two upper and lower parts and six left and right parts.

The CCTV control unit 145 displays a plurality of door camera images taken by the door cameras provided on one side of the train in an order that allows the crew to easily recognize the monitoring area corresponding to each door camera image. Place in each area of the region. As an example, door camera images are arranged in each area of the display area by a logic that sequentially assigns the camera images of the doors in order from the front to the back in the direction of travel of the train from the upper left to the lower right of the monitor. In addition, the CCTV control unit 145 superimposes door position information indicating the position of the door shown in the image on the door camera image of each area. In FIG. 3, the door position information includes a numeric portion (“1” to “6”) representing the vehicle number and a character portion (“A” or “B”) representing whether the door is positioned in front of or behind the vehicle. is superimposed on each door camera image. For example, "3-B" indicates that the door camera image shows the rear door of the third vehicle.

The TMS control unit 135 communicates with the door control units 131 to 134 to receive a signal indicating the state of the door (for example, a door obstacle detection signal indicating that the door has failed to close due to an obstacle) and to instruct opening and closing of the door. A command (for example, a door closing command instructing closing of the door) is transmitted. The door control units 131 to 134 transmit a door obstacle detection signal including door identification information to the TMS control unit 135 if the door cannot be closed when closing the door in response to the door closing command. . Based on the door obstacle detection signal, the TMS control unit 135 causes the TMS monitor 136 to display information that enables recognition of the door in which the door closing abnormality is detected, as shown in FIG. Door obstacle detection signals transmitted from the door control units 131 to 134 are also provided to the CCTV control unit 145 through the TMS control unit 135 . Based on the door obstacle detection signal, the CCTV control unit 145 automatically enlarges and displays the door camera image of the door in which the closing abnormality is detected on the CCTV monitor.

In the display example of the TMS monitor 136 in FIG. 4, the layout of the doors of each vehicle of the train is displayed, and each door is displayed in an open state and a closed state. In the figure, the front door of the fifth car is open. By looking at the display on the TMS monitor 136, the crew can identify the door that failed to close. Incidentally, conventionally, the crew had to identify the door in which the closed door abnormality was detected by looking at the display of the TMS monitor 136, and then search for the image of the door from the CCTV monitor 146 and check it. It took time and effort. However, as described above, in the monitoring system according to the embodiment of the present invention, the CCTV control unit 145 cooperates with the TMS control unit 135 to automatically enlarge the door camera image of the door where the closed door abnormality is detected. Since it is displayed, it is possible to shorten the time for confirming the abnormality while saving the crew's trouble.

FIG. 5 shows an example of a sequence when an abnormality occurs in closing the door. Also, FIG. 6 shows an example of a processing flow when an abnormality occurs in closing the door.
When the crew member inputs a door closing command, the TMS control unit 135 transmits the door closing command to the door control units 131 to 134 of each vehicle, and all the doors are closed (steps S11 and S12). The door control units 131 to 134 monitor the state of the door and determine whether the door has been successfully closed (step S13). The door control units 131 to 134 that have detected that the door has failed to close, output a door obstacle detection signal including door identification information to the TMS control unit 135, retry closing the door, and determine the success or failure. are repeated (steps S14 to S17). When all the doors are closed successfully, the door closing operation is completed (step S18).

Further, when the door closing fails three times in a row, the door control units 131 to 134 cancel the door closing and open the door, and continuously transmit the door obstacle detection signal to the TMS control unit 135. (Steps S19, S20). The CCTV control unit 145 identifies the door obstacle detection signal by the door identification information included in the door obstacle detection signal when continuous reception of the door obstacle detection signal from the TMS control unit 135 continues for a predetermined time (for example, 1 second). It is determined that an abnormality has occurred in closing the door, and an enlarged image of the door camera image of the corresponding door is displayed on the CCTV monitor 146 (step S21). In this example, the time length of one door obstacle detection signal is 200 milliseconds, and 1 second corresponding to five consecutive door obstacle detection signals is set as the predetermined time. Since it is sufficient that the CCTV control unit 145 can detect two or more consecutive door failure detection signals, the predetermined time may be set to, for example, 0.4 seconds. good.

Enlarged display of the door camera image can be terminated and resumed by the crew member's operation. The crew member monitors the magnified image of the door camera image of the door for which an abnormality was detected in closing the door, and when he/she confirms that there is no obstacle preventing the closing of the door, he or she re-enters the closing command. As a result, the door is closed, and the enlarged display is automatically terminated.
Here, in the above example, the CCTV control unit 145 receives the door obstacle detection signal from each of the door control units 131 to 134 via the TMS control unit 135. may be configured to receive directly to Alternatively, the TMS control unit 135 is configured to determine whether the door is closed abnormally based on the door obstacle detection signals from the door control units 131 to 134, and to provide the determination result to the CCTV control unit 145. good too.

FIG. 7 shows an example of enlarged display when an abnormality occurs in closing the door. In the figure, the entire display area of the CCTV monitor is used to enlarge and display the door camera image of the abnormal door. The screen example on the left is an example of display immediately before an abnormality in closing the door is detected, and the example of the screen on the right is an example of display immediately after an abnormality in closing the door is detected. In the previous display example, the abnormal door is highlighted (here, displayed with a thick line).
By enlarging the display using the entire display area of the CCTV monitor in this way, the crew can easily confirm the reason why the door could not be closed. A plurality of CCTV monitors may be prepared and one of them may be used for enlarged display.

FIG. 8 shows another example of enlarged display when an abnormality occurs in closing the door. In the same figure, of the plurality of areas obtained by dividing the display area of the CCTV monitor, six areas excluding the area used for displaying the door camera image of the door for which an abnormality was detected in closing the door are used to identify the door related to the abnormality. Enlarged display of the camera image is performed. In addition, the door camera image of the abnormal door is provided with a highlighted display that enables recognition of the abnormal closing of the door. The highlighting indicating that there is an abnormality in closing the door may be characters, symbols, graphics, colors, frame lines, etc., or a combination thereof. For example, as shown in FIG. A frame line that is more visually emphasized than the frame line (for example, a red line, a thick line, etc.) may be added as long as it can be visually confirmed easily.
In this way, by performing the enlarged display while using the split display layout, the crew can easily grasp which door could not be closed, and the reason why the door could not be closed. can be easily confirmed. In the example of FIG. 8, the enlarged display is performed using six areas, but the enlarged display can be performed using two or more areas.

The display mode as shown in FIG. 8 can be easily realized by setting in advance an area used for enlarged display of the door camera image displayed in each area obtained by dividing the display area of the CCTV monitor. For example, as shown in FIG. 9, assume that the display area of a CCTV monitor is divided into 12 small areas A1 to A12. It is also assumed that six small areas A1 to A3 and A7 to A9 on the left constitute a middle area B1, and six small areas A4 to A6 and A10 to A12 on the right constitute a middle area B2. In the case of such a division form, a table is prepared in which correspondence between small areas and medium areas used for enlarged display of door camera images displayed in the small areas is set in advance. Then, based on this table, the CCTV control unit 145 enlarges the display in the middle area B2 when a door opening error occurs in one of the small areas A1 to A3 and A7 to A9, and displays it in the small areas A4 to A6. , A10 to A12, the display is enlarged in the middle area B1.

As described above, the monitoring system according to the first embodiment includes the door cameras 141 to 144 that capture images of the doors 121 to 124 of each vehicle of the train from outside the vehicle, and the door camera images captured by the door cameras 141 to 144. CCTV monitor 146 that displays and a plurality of door camera images captured by each door on the opening and closing side are allocated to a plurality of areas obtained by dividing the display area of the CCTV monitor 146, respectively. and a portion 145 . In addition, the CCTV control unit 145 performs control to enlarge and display the door camera image of the abnormal door in response to detection of an abnormality in closing of any door.
With such a configuration, it is not necessary for the crew to identify the door that failed to close by looking at the display on the TMS monitor, and to find the image of the door from the display on the CCTV monitor to check it. Therefore, it is possible to reduce the burden of the work of confirming the state of the door whose closing abnormality is detected by video.

(Second embodiment)
FIG. 10 is a diagram showing a configuration example of a monitoring system according to the second embodiment. 11 is a diagram showing an example of camera arrangement in the monitoring system of FIG. 10. In FIG. In the following, the configuration different from that of the monitoring system according to the first embodiment will be mainly described, and the description of the same configuration as that of the monitoring system according to the first embodiment will be omitted as appropriate.

The monitoring system according to the second embodiment is applied to a train composed of 12 cars 101-112. In the train of this example, for example, the 1st to 6th cars and the 7th to 12th cars have the same structure, and the 7th to 12th cars are reversed for the 1st to 6th cars. Constructed by concatenating Each vehicle has two doors 121, 122 on one side and two doors 123, 124 on the other side. Each vehicle has door control units 131 to 134 for controlling the doors, door cameras 141 to 144 for photographing the doors and their surroundings from outside the vehicle, and doors and their surroundings. are installed with in-vehicle cameras 151 to 154 for photographing from inside the vehicle. Also, in the monitoring system according to the second embodiment, two CCTV monitors (146, 147) are provided in order to cope with a 12-car train. 10, doors 121, 122 (or 123, 124), door control units 131, 132 (or 133, 134), door cameras 141, 142 (or 133, 134) on one side of the vehicle are shown for convenience of explanation. or 143, 144), only the in-vehicle cameras 151, 152 (or 153, 154) are shown.

The in-vehicle cameras 151 to 154 of each vehicle are arranged so as to photograph the inside of the vehicle around the door. In this example, as shown in FIG. 11, it is arranged above the door on the side opposite to the door to be photographed so that a camera image of each door can be photographed from the front direction. In-vehicle camera images captured by the in-vehicle cameras 151 to 154 are transmitted to the CCTV control unit 145 via the switching hub 161 and displayed on the CCTV monitors 146 and 147 .

In the first embodiment described above, in response to detection of an abnormality in closing of the door, the door camera image of the door taken from outside the vehicle is automatically enlarged and displayed. On the other hand, in the second embodiment, an in-vehicle camera image taken from the inside of the vehicle of the door in which the door closing abnormality was detected is also displayed on the CCTV monitor.

FIG. 12 shows an example of enlarged display and in-vehicle display when an abnormality occurs in closing the door. In the figure, the CCTV control unit 135 uses the entire display area of one of the two CCTV monitors to enlarge and display the door camera image of the abnormal door, and the display area of the other CCTV monitor. is used to enlarge and display the in-vehicle camera image of the abnormal door. The screen example on the left is an example of display immediately before an abnormality in closing the door is detected, and the example of the screen on the right is an example of display immediately after an abnormality in closing the door is detected.
In this way, by separating the CCTV monitor used for enlarged display of the door camera image and the CCTV monitor used for enlarged display of the in-vehicle camera image, the crew can better understand the reason why the door could not be closed. can be checked accurately.

FIG. 13 shows another example of enlarged display and in-vehicle display when an abnormality occurs in closing the door. In the same figure, among a plurality of areas obtained by dividing the display area of the CCTV monitor, four areas excluding the area used for displaying the door camera image of the door for which an abnormality was detected in closing the door are used to identify the door related to the abnormality. Enlarged display of the camera image is performed. In addition, the other four areas are used to enlarge and display the in-vehicle camera image of the abnormal door. In addition, the door camera image of the abnormal door is provided with a highlighted display that enables recognition of the abnormal closing of the door. The highlighting indicating that there is an abnormality in closing the door may be characters, symbols, graphics, colors, frame lines, etc., or a combination thereof. For example, as shown in FIG. A frame line that is more visually emphasized than the frame line (for example, a red line, a thick line, etc.) may be added as long as it can be visually confirmed easily.
In this way, by enlarging the door camera image and the in-vehicle camera image while using the split display layout, the crew can easily grasp which door could not be closed and what the cause was. It will be possible to more accurately confirm whether the door could not be closed with In the example of FIG. 8, each image is enlarged and displayed using four areas, but it is possible to perform enlarged display using two or more areas.

In the display mode shown in FIG. 13, for each area obtained by dividing the display area of the CCTV monitor, an area used for enlarged display of the door camera image displayed in that area and enlarged display of the corresponding in-vehicle camera image is set in advance. This can be easily achieved by setting For example, as shown in FIG. 9, assume that the display area of a CCTV monitor is divided into 12 small areas A1 to A12. The four small areas A1 to A2 and A7 to A8 on the left constitute a medium area C1, the four small areas A3 to A4 and A9 to A10 in the center constitute a medium area C2, and the four small areas on the right. Assume that a medium area C3 is composed of two small areas A5 to A6 and A11 to A12. In the case of such a division form, a small area, a middle area used for enlarged display of the door camera image displayed in the small area, and an enlarged display of the in-vehicle camera image corresponding to the door camera image displayed in the small area. It is sufficient to prepare a table in which the correspondence with the middle area used for is set in advance.

As described above, the monitoring system according to the second embodiment includes the door cameras 141 to 144 that capture images of the doors 121 to 124 of each car of the train, respectively, and the door camera images captured by the door cameras 141 to 144. CCTV monitor 146 that displays and a plurality of door camera images captured by each door on the opening and closing side are allocated to a plurality of areas obtained by dividing the display area of the CCTV monitor 146, respectively. and a portion 145 . In addition, the vehicle interior cameras 151 to 154 are further provided for photographing the doors 121 to 124 from inside the vehicle, respectively. The camera image is enlarged and displayed, and the in-vehicle camera image of the abnormal door is also displayed together.
With this configuration, the crew can check not only the appearance of the door that failed to close from outside the vehicle, but also the appearance from inside the vehicle. It is possible to judge.

Here, the configuration of the system, device, etc. according to the present invention is not necessarily limited to those shown above, and various configurations may be used. For example, the number of doors provided on each side of each vehicle may be one, or three or more. Also, in the above example, a case where one door camera photographs one door has been described, but one door camera photographs a plurality of doors and their vicinity, cuts out the images, and displays them as shown in FIG. may be configured to Furthermore, in the above example, the CCTV control unit is mounted in a device separate from the CCTV monitor, but it may be built in the CCTV monitor. Also, the door camera and the in-vehicle camera may be arranged at any position where the door can be photographed.

The present invention can also be provided, for example, as a method or system for executing processing according to the present invention, a program for realizing such a method or system, or a storage medium for storing the program. As an example, the display control unit that controls the display of the CCTV monitor may be realized by executing a predetermined program on a computer. That is, for example, a computer having hardware resources such as a memory and a processor reads a program stored in a data storage device such as a hard disk or a flash memory onto the memory, and executes the program by the processor to realize the display control unit. You may

INDUSTRIAL APPLICABILITY The present invention can be used in a surveillance system comprising a plurality of cameras for photographing a plurality of doors of a train and a monitor for displaying door camera images photographed by the cameras.

101-112: vehicle 121-124: door 131-134: door control unit 135: TMS control unit 136: TMS monitor 141-144: door camera 145: CCTV control unit 146, 147: CCTV monitor , 151 to 154: in-vehicle camera, 161: switching hub

Claims (6)

A plurality of door cameras installed in a train for photographing a plurality of doors of the train from outside the train, a plurality of in-vehicle cameras for photographing the plurality of doors from inside the train, and at least the door camera images photographed by the door cameras are displayed. A monitoring system comprising a monitor that
a display control unit that allocates and displays a plurality of door camera images obtained by photographing each door on the opening and closing side to a plurality of areas obtained by dividing the display area of the monitor,
The display control unit determines that an abnormality has occurred in the door based on a signal indicating failure to close the door, which is transmitted from the door control unit that controls opening and closing of each door. A monitoring system characterized in that a door camera image of a door determined to be abnormal is displayed in an enlarged manner , and an in-vehicle camera image taken by the in-vehicle camera of the door related to the abnormality is further displayed on the monitor. The monitoring system of claim 1 , wherein
The monitoring system, wherein the display control unit performs enlarged display of the door camera image of the abnormal door and display of the in-vehicle camera image of the abnormal door using separate monitors. The monitoring system of claim 1 , wherein
The monitoring system, wherein the display control unit performs enlarged display of the door camera image of the abnormal door and display of the in-vehicle camera image of the abnormal door using the same monitor. In the monitoring system of claim 3 ,
The display control unit performs the enlarged display using two or more areas excluding an area used for displaying the door camera image of the door related to the abnormality, among the plurality of areas obtained by dividing the display area. A surveillance system characterized by displaying the in-vehicle camera image using two or more areas of. In the monitoring system according to any one of claims 1 to 4 ,
The door control unit outputs a signal indicating failure to close the door in response to a failure to close the door, and retry closing the door. continuously send
A monitoring system according to claim 1, wherein said display control unit determines that a door corresponding to a door control unit, which is a source of said signal, has closed abnormally when said signal is continuously received for a predetermined period of time. A plurality of door cameras installed in a train for photographing a plurality of doors of the train from outside the train, a plurality of in-vehicle cameras for photographing the plurality of doors from inside the train, and at least door camera images photographed by the door cameras. A monitoring method by a monitoring system comprising a display monitor,
a plurality of door camera images obtained by photographing each door on the opening/closing side are allocated to and displayed in a plurality of areas obtained by dividing the display area of the monitor;
When it is determined that an abnormality has occurred in the door based on a signal indicating that the door has failed to close, which is transmitted from the door control unit that controls the opening and closing of each door, the door determined to have an abnormality A monitoring method, wherein a door camera image is magnified and displayed , and an in-vehicle camera image taken by the in-vehicle camera of the abnormal door is further displayed on the monitor.

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