JP4349152B2 - Safe operation support system and safe operation support method - Google Patents

Description

  The present invention relates to a safe operation support system and a safe operation support method for supporting a moving body such as a train so that a travel route can be operated safely.

  In the conventional safe operation support method, a camera is installed at a point where the situation in the travel route should be monitored, and a video of the spot is received at a distance that can be stopped by the train traveling on the travel route. The transmission is transmitted to a transmission position that can be transmitted, transmitted from the transmission position to a train or the like, and an image is displayed on a monitor provided in a cab of the train or the like. In addition, in this safe operation support method, when the video is taken of the situation inside the railroad crossing, it is automatically detected for obstacles, etc., compared with the standard video prepared in advance for the train etc., and the driver is warned. Has been issued. Further, in this safe operation support method, digital data is superimposed on a video and transmitted, and video display control or various point information from the ground and emergency alert information are transmitted (see, for example, Patent Document 1). ).

  In addition, in the conventional safe operation support method, images of the platform of the station are transmitted to a moving body and displayed on a monitor provided in the cab of the moving body, and a display screen is displayed. In some cases, the camera number corresponding to, the car number of the vehicle shown in the screen, and the like are displayed on the same screen (see, for example, Patent Document 2). Furthermore, in the conventional safe operation support method, a plurality of cameras are installed in the direction of the train on the side of the track about every 500 m, and images from the camera that captured the running vehicle travel in front of the vehicle. Some are transmitted to the driver's cab of the vehicle and displayed on a monitor provided in the driver's cab (see, for example, Patent Document 3).

JP-A-2-45264 (first page, third page, fourth page, FIGS. 1 and 2) Japanese Patent Laid-Open No. 3-295759 (5th page, 6th page, FIG. 4) Japanese Utility Model Publication No. 5-28192 (Claim 2, [0013], FIG. 2)

  A driver of a moving body such as a train operates the moving body while visually confirming the situation ahead, especially on the traveling route and in the vicinity thereof, such as the platform and railroad crossing of the station, while the moving body is traveling. is doing. However, human vision has limitations. Therefore, in the above-described conventional safe driving support method, in any case, by displaying an image obtained by capturing a relatively short part with a camera at a distance of less than 1 km on the monitor on the cab, We support the mobile body so that it can safely travel the route.

  By the way, when the moving body is traveling at the maximum speed or a speed close thereto, it is necessary to grasp the situation of a comparatively long place whose distance from the moving body is about several kilometers as well as the latest situation. . When moving through a platform or railroad crossing of a station where a moving body such as an express train or special express train does not stop, the vehicle will travel without slowing down, so the driver will be able to take these situations as early as possible. It is necessary to grasp. However, in any of the conventional safe operation support methods described above, an image obtained by capturing a relatively short part with a distance from the moving body of less than 1 km is displayed on the monitor. Otherwise, the situation at that location cannot be grasped, and the mobile object may not be operated safely.

  Further, in the above-described conventional safe driving support method, the location displayed on the monitor display screen (shooting location) and the current position of the moving object are not associated with each other. There was a problem that it was difficult to intuitively grasp the sense of distance from the body to the shooting location. Such a problem is likely to occur when the shooting location is a location that is a blind spot from the cab in the travel route or a location that is relatively long from the moving body.

A safe operation support system according to the present invention includes a plurality of monitoring devices installed in the vicinity of a travel route of a mobile body, a mounting device mounted on the mobile body, and a support device connected to the monitoring device via a network. Each of the monitoring devices supplies a plurality of images that are taken on or near the corresponding travel route to the support device, and are requested and transmitted to the support device in response to a request from the mounting device. And the support device stores the image for each of the monitoring devices in a storage unit, and also from the storage unit in response to a request from the monitoring device. The images of the plurality of monitoring devices including the monitoring device are read out and transmitted to the monitoring device, and the mounting device transmits the plurality of images transmitted by requesting the images to the monitoring device capable of communication. , To each divided display area of the display means has a display area is divided, the is for displaying in correspondence with the relative position between the moving entity and the monitoring device.

The safe operation support method according to the present invention is connected to a plurality of monitoring devices installed in the vicinity of a travel route of a mobile body, a mounting device mounted on the mobile body, and the monitoring device via a network. Each of the monitoring devices supplies the support device with an image taken on or near the corresponding travel route, and transmits the image to the support device in response to a request from the mounting device. A plurality of the images are transmitted to the moving mobile body, and the support device stores the images for each of the monitoring devices in a storage unit, and from the storage unit in response to a request of the monitoring device. The images of a plurality of the monitoring devices including the monitoring device are read out and transmitted to the monitoring device, and the mounting device transmits a plurality of the images transmitted by requesting the images from the communicable monitoring device. And each divided display area of the display means has a display area is divided, the is for displaying in correspondence with the relative position between the moving entity and the monitoring device.

The invention as described above, is installed in the running path near the moving body, traveling a plurality of imaging means for outputting a corresponding image by photographing the on or near the said travel path, said plurality of said images Communication means for transmitting to the mobile body, and a plurality of the images mounted on the mobile body and transmitted to each divided display area of the display means divided into display areas corresponding to the installation positions of the respective monitoring devices. And a mounting device for displaying. Therefore, the driver intuitively grasps the distance from the moving body to the shooting location even if it is an image of the location where the blind spot from the cab on the driving route or the location where the distance from the moving body is relatively long can do.

Embodiment 1 FIG.
FIG. 1 is a block diagram showing a configuration of a safe operation support system according to Embodiment 1 of the present invention.
The safe operation support system in this example includes a monitoring device 1, a network 2, a train mounting device 3, and a support device 4.

  The monitoring device 1 is schematically configured from a camera unit 11, a radio base station 12, and a gateway 13. As shown in FIG. 2, each of the monitoring devices 1 is housed and attached to a column 15 on a column. An antenna 14 is attached on the casing of the base station 12. For example, as shown in FIG. 3, the monitoring device 1 is in the vicinity of a track 43 on which a train 42 travels, such as the vicinity of a platform 41 of a station. It is installed near the monitoring point. As monitoring points that need to be monitored, there are railroad crossings, railway bridges, railroad tracks 43 and the vicinity thereof where they are blind spots from the cab, tunnel entrances, interiors, exits, railroad tracks 43 and relatively long distances from the train 42 There are places near the coast that are easily washed by large waves and tsunamis, and places that are prone to landslides and landslides.

  The camera unit 11 includes an imaging unit including an imaging element such as a CMOS (Complimentary Metal Oxide Semiconductor) sensor or a CCD (Charge Coupled Device) sensor, a lens, and the like, and an image processing unit. The photographing unit photographs the periphery of the station platform 41 and outputs digital moving image data. The image processing unit compresses and encodes the digital moving image data into encoded data using MPEG (Moving Picture Experts Group) 4 method, and supplies the encoded data to the gateway 13. Here, MPEG4 is one of the standards of a moving picture compression method using inter-frame prediction by motion compensation recommended by MPEG of the International Organization for Standardization (ISO). It is a standard (bit rate; -10 Mbps) that also includes body communication. The camera unit 11 may be either monochrome or color.

  As shown in FIG. 3, the radio base station 12 has a train 42 in a range of 500 to 1 km and a maximum of several km (hereinafter referred to as a communicable range) along the track 43 via radio waves transmitted and received by the antenna 14. Wireless communication is performed with the train mounting device 3 mounted on the vehicle. This wireless communication employs the Mobile IP protocol defined in RFC2002MBA standard draft 0202. This wireless communication is performed smoothly without interruption even when the train 42 travels at a high speed of 200 km / h or higher. In addition, the radio base station 12 transmits a beacon signal that broadcasts an ESS-ID (Extended Service Set Identification) that is its own identifier to the surroundings at regular time intervals.

  The gateway 13 is a device that enables communication by converting data with different transmission media (for example, optical fiber and copper cable) and communication protocol between the support device 4 and the support device 4 via the network 2. A layer 2 switch 13a is incorporated. The layer 2 switch 13a is one of the relay devices of the network 2, and performs data transfer by determining the destination of the packet based on the data link layer (second layer) data of the OSI reference model. In the first embodiment, for example, the layer 2 switch 13a designates a video storage server 32 described later as a transmission destination of encoded data supplied from the camera unit 11, and supports the encoded data via the network 2. Transmit to device 4.

  The network 2 includes, for example, a local area network (LAN), a wide area network (WAN), an IP (Internet Protocol) network, the Internet, a mobile communication network, a fixed communication network, and the like. The network 2 is wired or wirelessly connected to the monitoring device 1 and the support device 4 by, for example, a twisted pair cable, a coaxial cable, an optical fiber cable, or the like.

  The train mounting device 3 is schematically configured from a mobile router 21, a control unit 22, a storage unit 23, an operation unit 24, and a monitor 25, and although not shown, it is integrated with or near the cab of the train 42. It is installed. The mobile router 21 performs wireless communication with the monitoring device 1 via radio waves transmitted and received by the antenna 26 provided at the outdoor head portion of the train 42. The control unit 22 includes a central processing unit (CPU), a digital signal processor (DSP), a sequencer, and the like, and includes a beacon signal reception confirmation program, a connection request program, a care of address registration request program, a moving image stored in the storage unit 23. By executing the beacon signal reception confirmation process, the connection request process, the care of address registration request process, the moving image request process, the moving image display process, and the like based on the image request program, the moving image display program, etc. To control the whole. That is, for example, when a beacon signal reception confirmation program is read, it is read by the control unit 22 and controls the operation of the control unit 22. When the beacon signal reception confirmation program is activated, the control unit 22 executes a beacon signal reception confirmation process described later under the control of the beacon signal reception confirmation program.

  The beacon signal reception confirmation process is a process of controlling the mobile router 21 to confirm reception of a beacon signal transmitted from the monitoring device 1. The connection request process is a process of controlling the mobile router 21 in response to the reception of the beacon signal and causing the monitoring apparatus 1 that has transmitted the beacon signal to transmit a connection request to the support apparatus 4. The care-of-address registration request process is performed when the train-mounted device 3 is authenticated by accessing the safe operation support system, and the care-of address given to the mobile router 21 of the train-mounted device 3 with respect to the support device 4. Is a process for requesting registration of Here, the care-of address is an IP address that varies depending on a subnetwork to which the mobile host computer is connected, and means position information of the mobile router 21. The moving image request process is a process for requesting the support apparatus 4 to supply a moving image. The moving image display process can be displayed on the monitor 25 after decoding the digital moving image data from the encoded data transmitted from the support device 4 via the network 2 and the monitoring device 1, for example, the NTSC method The video signal is converted into a video signal and displayed on the monitor 25.

  The storage unit 23 includes a semiconductor memory such as a RAM, a ROM, or a flash memory, an FD drive to which an FD (floppy (registered trademark) disk) is mounted, an HD drive to which an HD (hard disk) is mounted, and an MO (optical MO disk drive to which a magnetic disk is mounted, or CD (compact disk) -ROM, CD-R (Recordable), CD-RW (ReWritable), DVD-ROM, DVD-R, DVD-RW, etc. CD / DVD drive. The storage unit 23 is the beacon signal reception confirmation program, the connection request program, the care of address registration request program, the moving image request program, the moving image display program, and other various programs to be executed by the control unit 22 described above. Is previously stored, and the control unit 22 executes the beacon signal reception confirmation program, the connection request program, the care of address registration request program, the moving image request program, the moving image display program, and other various programs. When used for work.

  The operation unit 24 includes a keyboard, a touch panel, various buttons, and the like including numeric keys, enter keys, function keys, and the like. The monitor 25 includes a CRT display, a liquid crystal display (LCD), an electroluminescence (EL) display, a plasma display panel (PDP), or the like.

  The support device 4 is schematically configured from a media converter 31, a video storage server 32, an authentication server 33, an HA (Home Agent) server 34, and a MIS (Mobile Internet Protocol Solution) manager 35. It is installed at the head office. The media converter 31 is a device that connects different transmission media (for example, an optical fiber and a copper cable) to and from the monitoring device 1 via the network 2 and converts data to each other to enable communication. .

  The video storage server 32 is configured by an information processing apparatus such as a computer having a control unit, a storage unit, a display unit, an operation unit, and a communication control unit. The control unit includes a CPU, a DSP, a sequencer, and the like, and executes a moving image accumulation process, a moving image supply process, and the like based on a moving image accumulation program, a moving image supply program, and the like stored in the storage unit. The entire server 32 is controlled. That is, for example, when the moving image storage program is read from the storage unit, it is read by the control unit and controls the operation of the control unit. When the moving image storage program is started, the control unit executes a moving image storage process to be described later under the control of the moving image storage program.

  The moving image accumulation process is a process of sequentially storing encoded data that is constantly transmitted from the monitoring device 1 via the network 2 and the media converter 31 in the storage unit. In the moving image supply process, the encoded data stored in the storage unit is read in real time in response to a read request from the MIS manager 35, and is transmitted to the train mounting apparatus 3 via the media converter 31, the network 2, and the monitoring apparatus 1. It is a process to transmit.

  The storage unit includes a semiconductor memory such as a RAM, a ROM, or a flash memory, an FD drive to which an FD is mounted, an HD drive to which an HD is mounted, an MO disk drive to which an MO disk is mounted, a CD-ROM, a CD-R CD-RW, DVD-ROM, DVD-R, DVD-RW, etc. In addition to various programs such as the moving image storage program and the moving image supply program, the storage unit stores encoded data and other various data, and the control unit stores the moving image storage program and the moving image supply. Used for work when executing programs and other various programs.

  The display unit includes a CRT display, LCD, EL display, or PDP. The operation unit includes a keyboard and a mouse. The communication control unit performs data communication with the monitoring device 1 via the media converter 31 and the network 2, and further with the train mounting device 3 via the monitoring device 1, and also performs data communication with the MIS manager 35.

  Like the video storage server 32, the authentication server 33 is configured by an information processing apparatus such as a computer having a control unit, a storage unit, a display unit, an operation unit, and a communication control unit. Processing to be executed and programs and data stored in the storage unit are different. That is, the control unit executes the authentication process, the authentication result transmission process, and other processes based on various programs such as an authentication program and an authentication result transmission program stored in the storage unit, and controls the entire authentication server 33. .

  The authentication process is a process of authenticating whether or not the train mounted device 3 that has accessed the safe operation support system is a registered valid train mounted device. The authentication result transmission process is a process for transmitting the authentication result to the HA server 34. In addition to various programs such as the authentication program and the authentication result transmission program, the storage unit includes a registered information table including information (user name (terminal identifier), password, etc.) of each train-mounted device 3 registered, and other various types. And is used for work when the control unit executes the authentication program, the authentication result transmission program, and other various programs.

  The HA server 34 is configured by an information processing apparatus such as a computer having a control unit, a storage unit, a display unit, an operation unit, and a communication control unit, similar to the video storage server 32 and the like. The processing executed by and the program and data stored in the storage unit are different. That is, the control unit is based on various programs such as a care-of-address grant program, a care-of-address registration program, and a care-of-address exchange program stored in the storage unit. A care-of-address exchange process and other processes are executed to control the entire HA server 34.

  The care-of-address assignment process is a process for assigning a care-of address to the mobile router 21 of the train-mounted device 3 when the authentication of the train-mounted device 3 is successful. The care-of-address registration process is a process of storing the care-of address assigned to the mobile router 21 of the train-mounted device 3 in the storage unit in response to the care-of-address registration request from the authenticated train-mounted device 3. . The care-of-address exchange process is a process for automatically exchanging the care-of address with the original unchanging IP address (home address) of the mobile router 21 to which the authentication is successful and the care-of address is given.

  The storage unit stores various programs such as the care-of-address assignment program, the care-of-address registration program, and the care-of-address exchange program, as well as the care-of address assigned to each mobile router 21 and other various data. In addition, the control unit is used for work when executing the care-of-address assignment program, the care-of-address registration program, the care-of-address exchange program, and other various programs.

  The MIS manager 35 is configured by an information processing apparatus such as a computer having a control unit, a storage unit, a display unit, an operation unit, and a communication control unit, similar to the video storage server 32 and the like. The processing executed by and the program and data stored in the storage unit are different. That is, the control unit executes the moving image supply control process and other processes based on various programs such as the moving image supply control program stored in the storage unit, and controls the entire MIS manager 35.

  In the moving image supply control process, in response to a moving image request from the train mounting device 3, the encoded data stored in the storage unit of the video storage server 32 is read in real time from the video storage server 32. This is a process of requesting and transmitting the read out encoded data to the train mounting apparatus 3 via the gateway 13 and the radio base station 12 of the monitoring apparatus 1 in communication with the train mounting apparatus 3 that is communicating. The storage unit stores various data in addition to various programs such as the moving image supply control program, and is used for work when the control unit executes the moving image supply control program and other various programs.

  Next, the operation of the safe operation support system having the above configuration will be described. As a premise, in the monitoring apparatus 1, the following operations are always performed unless the power is turned on and the apparatus operates normally and special control is not performed from the outside. That is, the digital video data around the station platform 41 taken by the photographing unit of the camera unit 11 is encoded by the image processing unit into the encoded data by the MPEG4 method, so that the layer 2 switch 13a of the gateway 13 performs this encoding. The video storage server 32 is designated as a data transmission destination, and the encoded data is transmitted to the support apparatus 4 via the network 2. Moreover, the wireless base station 12 transmits a beacon signal at regular intervals.

  On the other hand, the support device 4 is also operating normally after the power is turned on, and the following operations are always performed unless special control is performed from the outside. That is, the control unit of the video storage server 32 always performs moving image storage processing, and sequentially stores encoded data that is constantly transmitted from the monitoring device 1 via the network 2 and the media converter 31 in the storage unit. Yes. Since the storage capacity of the storage unit is limited, the control unit of the video accumulation server 32 stores only encoded data for a predetermined time in the storage unit, and the old encoded data once stored is new. Overwrite the encoded data.

  The processes of the train mounting device 3, the video storage server 32, the authentication server 33, the HA server 34, and the MIS manager 35 in such a precondition will be described with reference to the flowchart shown in FIG. Note that the processing performed between the train-mounted device 3 and the video storage server 32, the authentication server 33, the HA server 34, and the MIS manager 35 actually includes the monitoring device 1, the network 2, and the media converter 31. However, for the sake of simplicity, the processing in these will not be described below unless otherwise specified.

  The control unit 22 of the train mounting apparatus 3 mounted on the train 42 always determines whether the mobile router 21 has received a beacon signal (step SA1: beacon signal reception confirmation process). As shown in FIG. 3, when the train 42 approaches the station where the monitoring device 1 is installed, when the antenna 26 enters the communicable range of the radio base station 12 constituting the monitoring device 1, the mobile router 21 receives the beacon signal. In response to receiving the beacon signal, the control unit 22 controls the mobile router 21 to cause the monitoring device 1 that has transmitted the beacon signal to transmit a connection request to the support device 4 (step SA2: connection request). processing).

  The monitoring apparatus 1 that has received the connection request transmits the connection request to the authentication server 33. Thereby, the control unit of the authentication server 33 authenticates whether or not the train-mounted device 3 that has accessed the safe operation support system is a registered valid train-mounted device (step SA3: authentication process), and the authentication result. Is transmitted to the HA server 34 (step SA4: authentication result transmission process), and the series of processes is terminated. The control unit of the HA server 34 that has received the authentication result gives a care-of address to the mobile router 21 of the train mounted device 3 when the authentication result indicates that the authentication of the train mounted device 3 is successful. (Step SA5: Care-of-address assignment process). On the other hand, when the authentication result indicates that the authentication of the train mounting apparatus 3 is unsuccessful, the control unit of the HA server 34 that has received the authentication result does nothing and ends the series of processes. In practice, the above authentication is performed in conjunction with the radio base station 12 and the authentication server 33.

  The control unit 22 of the train mounting apparatus 3 that has received the care-of address requests the HA server 34 to register the care-of address (step SA6: care-of-address registration request process). The control unit of the HA server 34 requested to register the care-of address from the train mounting apparatus 3 stores the care-of address in the storage unit (step SA8: care-of-address registration process). Thereafter, the control unit of the HA server 34 automatically performs mutual exchange between the home address of the mobile router 21 to which the authentication is successful and the care-of address is assigned and the care-of address (care-of-address exchange process). For the sake of simplicity, the care-of-address exchange process will not be described below.

  The control unit 22 of the train mounting apparatus 3 that has made a care-of-address registration request requests the MIS manager 35 to supply a moving image (step SA7: moving image request processing). Upon receiving the moving image supply request, the control unit of the MIS manager 35 requests the video storage server 32 to read out the encoded data stored in the storage unit of the video storage server 32 in real time. The encoded data is transmitted to the train-mounted device 3 via the gateway 13 and the radio base station 12 of the monitoring device 1 that is communicating with the train-mounted device 3 that has accessed (step SA9: moving image supply control processing) ) After that, a series of processing ends. The control unit of the video accumulation server 32 that has received the moving image read request reads out the encoded data stored in the storage unit in real time and sends it to the train mounting device 3 via the media converter 31, the network 2, and the monitoring device 1. After the transmission (step SA10: moving image supply process), the series of processes is terminated. As a result, the control unit 22 of the train mounting apparatus 3 that has received the encoded data decodes the digital moving image data from the encoded data, and then can display it on the monitor 25, for example, an NTSC video. After being converted into a signal and displayed on the monitor 25 (step SA11: moving image display processing), a series of processing ends.

  As described above, according to the configuration of this example, even when the communicable range of the radio base station 12 is several km at the maximum and the train 42 travels at a high speed of 200 km / h or more, the radio base station 12 and the train mounting apparatus 3 mounted on the train 42 can perform wireless communication smoothly without interruption. Therefore, even if the train 42 is traveling at the maximum speed or a speed close to the maximum speed, the driver can grasp the situation at a place where the distance from the train 42 is relatively long at an early stage. Therefore, for example, even when the train 42 is an express train, a special express train, or the like and passes through a platform or a railroad crossing of a station that does not stop, the train 42 can travel safely without slowing down.

Embodiment 2. FIG.
FIG. 5 is a block diagram showing a configuration of a safe operation support system according to Embodiment 2 of the present invention. In FIG. 5, parts corresponding to those in FIG. 1 are given the same reference numerals, and explanation thereof is omitted. In the safe operation support system shown in FIG. 5, unlike the safe operation support system shown in FIG. 1, a plurality of monitoring devices 1 ₁ to 1 _n (n is a natural number) are provided. Is provided. The monitoring device 1 shown in FIG. 1 and each of the monitoring devices 1 ₁ to 1 _n shown in FIG. 5 have the same configuration and function, and the latter subscript is attached to distinguish each management device. Only. Therefore, in the following, when the monitoring devices 1 ₁ to 1 _n are collectively referred to, they are simply referred to as the monitoring device 1.

FIG. 6 is a schematic diagram illustrating a usage state of the safe operation support system according to the second embodiment. In the illustrated example, the monitoring device 1 ₁ is installed on one of the foot of an iron bridge 51, the monitoring device 1 ₂ is disposed near one end of the crossing 52, the monitoring device 1 ₃ is placed about the periphery of the platform 53, the monitoring device 1 ₄ is installed on one of the vicinity of the entrance of the tunnel 54. Further, the train mounting device 3 and the support device 4 have the same configurations as those in the above-described first embodiment, and the functions thereof are the same as those in the above-described first embodiment except for those specifically mentioned below. It is.

Next, the operation of the safe operation support system having the above configuration will be described. As a premise, the monitoring devices 1 ₁ to 1 _n operate normally after power is turned on, and the following operations are always performed unless special control is performed from the outside. That is, in the monitoring device 1 _1, since the digital video data on the iron bridge 51 which imaging unit of the camera unit 11 has captured the image processing unit is encoded into encoded data in MPEG4 system, the Layer 2 switch 13a of the gateway 13, The video storage server 32 is designated as the transmission destination of the encoded data, and the encoded data is transmitted to the support apparatus 4 via the network 2. Similarly, the monitoring device 1 _2, the image processing unit the digital moving picture data on the crossings 52 which imaging unit has captured the camera unit 11 is encoded into encoded data in MPEG4 system, the Layer 2 switch 13a of the gateway 13 The video storage server 32 is designated as the transmission destination of the encoded data, and the encoded data is transmitted to the support apparatus 4 via the network 2.

The monitoring device 1 _3, since the image processing unit digital moving image data near the station platform 53 which imaging unit has captured the camera unit 11 is encoded into encoded data in MPEG4 system, the Layer 2 switch 13a of the gateway 13 The video storage server 32 is designated as the transmission destination of the encoded data, and the encoded data is transmitted to the support apparatus 4 via the network 2. The monitoring device 1 _4, since the image processing unit digital video data of one near the inlet of the tunnel 54 which imaging unit has captured the camera unit 11 is encoded into encoded data in MPEG4 system, the Layer 2 switch 13a of the gateway 13 Designates the video storage server 32 as a transmission destination of the encoded data, and transmits the encoded data to the support apparatus 4 via the network 2. The same applies to the other monitoring devices 1 ₅ to 1 _n . The radio base stations 12 of the monitoring devices 1 ₁ to 1 _n transmit beacon signals at regular intervals.

On the other hand, the support device 4 is also operating normally after the power is turned on, and the following operations are always performed unless special control is performed from the outside. That is, the control unit of the video storage server 32 always executes the moving image storage process, and the encoded data transmitted constantly from each of the monitoring devices 1 ₁ to 1 _n via the network 2 and the media converter 31 is After confirming the correspondence relationship with the monitoring devices 1 ₁ to 1 _n , for example, by using an address uniquely assigned to each gateway 13 constituting each of the monitoring devices 1 ₁ to 1 _n , It is possible to determine whether the data is transmitted from the monitoring device 1, and the information is sequentially stored in the storage unit. Since the storage capacity of the storage unit is limited, the control unit of the video accumulation server 32 stores only encoded data for a predetermined time in the storage unit, and the old encoded data once stored is new. Overwrite the encoded data.

  The processes of the train mounting device 3, the video storage server 32, the authentication server 33, the HA server 34, and the MIS manager 35 in such a precondition will be described with reference to the flowchart shown in FIG. Note that the processing performed between the train-mounted device 3 and the video storage server 32, the authentication server 33, the HA server 34, and the MIS manager 35 actually includes the monitoring device 1, the network 2, and the media converter 31. However, for the sake of simplicity, the processing in these will not be described below unless otherwise specified.

The control unit 22 of the train mounting apparatus 3 mounted on the train 42 always determines whether the mobile router 21 has received a beacon signal (step SA1: beacon signal reception confirmation process). Then, as shown in FIG. 6, by the train 42 approaches the iron bridge 51 monitoring device 1 ₁ is installed, the radio antenna 26 provided on the outside top portion of the train 42 constitute a monitoring device 1 ₁ When entering the communication range of the base station 12, receives a beacon signal from the radio base station 12 the mobile router 21 configuring the monitoring device 1 _1. Control unit 22, in response to reception of a beacon signal, and controls the mobile router 21 to transmit a connection request to the supporting apparatus 4 to the monitoring apparatus 1 ₁ that transmitted the beacon signal (step SA2: Connection Request processing).

Monitoring device 1 ₁ receives the connection request transmits the connection request to the authentication server 33. Thereby, the control unit of the authentication server 33 authenticates whether or not the train-mounted device 3 that has accessed the safe operation support system is a registered valid train-mounted device (step SA3: authentication process), and the authentication result. Is transmitted to the HA server 34 (step SA4: authentication result transmission process), and the series of processes is terminated. The control unit of the HA server 34 that has received the authentication result gives a care-of address to the mobile router 21 of the train mounted device 3 when the authentication result indicates that the authentication of the train mounted device 3 is successful. (Step SA5: Care-of-address assignment process). On the other hand, when the authentication result indicates that the authentication of the train mounting apparatus 3 is unsuccessful, the control unit of the HA server 34 that has received the authentication result does nothing and ends the series of processes. In practice, the above authentication is performed in conjunction with the radio base station 12 and the authentication server 33.

  The control unit 22 of the train mounting apparatus 3 that has received the care-of address requests the HA server 34 to register the care-of address (step SA6: care-of-address registration request process). The control unit of the HA server 34 requested to register the care-of address from the train mounting apparatus 3 stores the care-of address in the storage unit (step SA8: care-of-address registration process). Thereafter, the control unit of the HA server 34 automatically performs mutual exchange between the home address of the mobile router 21 to which the authentication is successful and the care-of address is assigned and the care-of address (care-of-address exchange process). For the sake of simplicity, the care-of-address exchange process will not be described below.

The control unit 22 of the train mounting apparatus 3 that has made a care-of-address registration request requests the MIS manager 35 to supply a moving image (step SA7: moving image request processing). The control unit of the MIS manager 35 that has received the request for supplying the moving image transmits each encoded data stored in the storage unit of the video storage server 32 for each of the monitoring devices 1 ₁ to 1 _n to the video storage server 32. of (in this case, the monitoring device 1 ₁₎ monitoring device in communication with the train mounting unit 3 having accessed 1 (in this case, the monitoring device 1 ₁₎ toward the traveling direction of the train the monitoring device 1 including, the requests to read the respective coded data from the monitoring device 1 of the same number as the division number DN to be described later in real time, for each coded data read out (now from the monitoring device 1 ₁ to 1 ₄ 4), the control unit 22 of the train mounting device 3 can determine which monitoring device 1 has transmitted the data, and the monitoring device 1 in communication with the accessing train mounting device 3 Gateway 13 and Then, after transmitting to the train mounting apparatus 3 via the wireless base station 12 (step SA9: moving image supply control processing), a series of processing ends. The control unit of the video storage server 32 that has received the moving image read request, among the encoded data stored for each of the monitoring devices 1 ₁ to 1 _n stored in the storage unit, each monitoring device 1 _1. to 1 each coded data from ₄ read out in real time, and from which the monitoring device 1 controller 22 of the train mounted device 3 enables determine has been transmitted, the media converter 31, the network 2 and the monitoring device 1 is transmitted to the train mounting apparatus 3 (step SA10: moving image supply process), and then the series of processes is terminated.

Thus, the control unit 22 of the train mounted device 3 receives each encoded data from each monitoring device 1 ₁ to 1 _4, after the said respective encoded data of digital moving image data respectively decoded (decode), FIG. 7 shows, for example, an NTSC video signal that can be displayed in the divided display area of the monitor 25 divided by a preset division number DN (in this example, the division number DN = 4). As shown, after displaying on the monitor 25 (step SA11: moving image display processing), a series of processing ends. In the example of FIG. 7, a moving image of the closest monitoring device 1 ₁ of an iron bridge 51 in the train 42 is in the divided display area UL of the upper left, the train 42 to the second close monitoring device 1 ₂ of the crossing 52 moving image upper right of the divided display area UR, the divided display area DL moving image at the lower left of the monitoring device 1 ₃ of the platform 53 third closest to the train 42, the moving picture farthest monitoring device 1 ₄ of the tunnel 54 in the train 42 is lower right Are displayed in each of the divided display areas DR.

Then, the train 42 is advanced, after an off-communicable range of the radio base station 12 constituting the monitoring device 1 _1, by approaching the railroad crossing 52 monitoring device 1 ₂ is installed, outdoor train 42 When entering the communication range of the wireless base station 12 to an antenna 26 provided at the head portion constituting the monitoring device 1 _2, receives the beacon signal from the radio base station 12 the mobile router 21 configuring the monitoring device 1 ₂ . Control unit 22, in response to reception of a beacon signal, and controls the mobile router 21 to transmit a connection request to the supporting apparatus 4 a beacon signal to the monitoring device 1 ₂ that has transmitted (Step SA2: Connection Request processing). Thereafter, as described with reference to FIG. 4, processing such as authentication, assignment of a new care-of address, registration of this new care-of address, and the like is executed again.

However, the four moving images divided and displayed on the monitor 25 are different as shown in FIG. That clears the moving image photographed iron bridge 51 in the monitoring device 1 ₁ that has been displayed on the divided display area UL of the upper left of the monitor 25 until now, the upper left divided display area UL of the monitor 25, a new, moving picture closest monitoring device 1 ₂ of the crossing 52 is displayed on the train 42, the divided display area UR of the upper right of the monitor 25, a new, video monitoring device 1 ₃ of the platform 53 close to the second train 42 An image is displayed. Further, the lower left divided display area DL of the monitor 25, a new moving image of the monitoring device 1 ₄ of the tunnel 54 near the third train 42 is displayed on the divided display region DR of the lower right of the monitor 25 is Then, a moving image of the track on the left curve of the monitoring device 1 ₅ (not shown) farthest from the train 42 is displayed.

Similarly, the train 42 is advanced, after an off-communicable range of the radio base station 12 constituting the monitoring device 1 _2, by approaching the platform 53 which is monitoring device 1 ₃ is installed, outdoor train 42 When the antenna 26 provided at the head portion enters the communicable range of the radio base station 12 constituting the monitoring device 1 _3, 4 of a moving image is divided displayed on the monitor 25 is changed to that shown in FIG. That clears the moving image photographed crossing 52 in the upper left divided display area monitoring device has been displayed on the UL 1 ₂ monitor 25 until now, the upper left divided display area UL of the monitor 25, a new, moving picture closest monitoring device 1 ₃ of the platform 53 in the train 42 is displayed on the divided display area UR of the upper right of the monitor 25, a new, video monitoring device 1 ₄ of the tunnel 54 near the second train 42 An image is displayed. In addition, in the lower left divided display area DL of the monitor 25, a moving image of the track of the left curve of the monitoring device 1 ₅ (not shown) closest to the train 42 is newly displayed. In the split display area DR, a moving image of the right curve track of the monitoring device 1 ₆ (not shown) farthest from the train 42 is displayed.

Similarly, the train 42 is advanced, after an off-communicable range of the radio base station 12 constituting the monitoring device 1 _3, by approaching to the tunnel 54 to the monitoring apparatus 1 ₄ is installed outdoor train 42 When the antenna 26 provided at the head part enters the communicable range of the radio base station 12 constituting the monitoring device 14, the _four moving images displayed on the monitor 25 are changed to those shown in FIG. 10. That clears the moving image photographed platform 53 in the monitoring device 1 ₃ which has been displayed on the divided display area UL of the upper left of the monitor 25 until now, the upper left divided display area UL of the monitor 25, a new, moving picture closest monitoring device 1 ₄ of the tunnel 54 is displayed on the train 42, the divided display area UR of the upper right of the monitor 25, a new monitoring device 1 ₅ second closest to the train 42 of (not shown) The moving image of the left curve track is displayed. In addition, in the lower left divided display area DL of the monitor 25, a moving image of the right curve track of the monitoring device 1 ₆ (not shown) that is the third closest to the train 42 is displayed. In the divided display area DR, a moving image of the platform of the station next to the monitoring device 1 ₇ (not shown) farthest from the train 42 is displayed.

  Thus, according to the configuration of this example, a plurality of monitoring devices 1 are provided for each of a plurality of monitoring points, and the train 42 including the nearest monitoring device 1 is installed in the traveling direction of the train 42. A plurality of moving images from the monitoring device 1 are always received continuously from the latest monitoring device 1 and continuously displayed on the monitor 25 in real time in order from the closest to the train 42. Therefore, the effects obtained in the first embodiment can be obtained, but the following effects can be obtained. That is, in particular, a monitoring device 1 other than the monitoring device 1 closest to the train 42, such as the monitoring device 1 installed in the vicinity of the monitoring point required after the tunnel exit, took a picture. Since the moving image is also displayed on the monitor 25, the driver can immediately cope with the emergency situation.

  Further, according to the configuration of this example, the location (photographing location) displayed on the display screen of the monitor is associated with the current position of the moving body, that is, among the moving images from the four monitoring devices, Displayed in order from the train in the upper left divided display area UL, the upper right divided display area UR, the lower left divided display area DL, and the lower right divided display area DR. Therefore, the driver can intuitively grasp the sense of distance from the moving body to the shooting location.

Embodiment 3 FIG.
FIG. 11 is a block diagram showing a configuration of a safe operation support system according to Embodiment 3 of the present invention. In FIG. 11, parts corresponding to those in FIG. In the safe operation support system shown in FIG. 11, a support device 61 is newly provided instead of the support device 4 shown in FIG. 5. The support device 61 includes a dynamic monitoring server 62 in addition to the video storage server 32, the authentication server 33, the HA server 34, and the MIS manager 35 that constitute the support device 4.

  The dynamic monitoring server 62 is configured by an information processing apparatus such as a computer having a control unit, a storage unit, a display unit, an operation unit, and a communication control unit, as with the video storage server 32 and the like. The processing executed by the unit and the program and data stored in the storage unit are different. That is, the control unit executes the dynamic monitoring process and other processes based on various programs such as the dynamic monitoring program stored in the storage unit, and controls the entire dynamic monitoring server 62.

The movement monitoring process monitors the movement at each monitoring point based on a moving image obtained by shooting each monitoring point, and when it is determined that an abnormal situation has occurred at a certain monitoring point, This process issues a warning to the driver. The storage unit stores a variety of programs such as the above-described behavior monitoring program, a behavior monitoring table described later (see FIG. 12), and other various data, and the control unit executes the above-described behavior monitoring program and other various programs. It is used for work when doing. Further, the use state of safe operation support system which is the third embodiment, as in the second embodiment described above, as shown in FIG. 6, as the monitoring device 1 ₁ to 1 _n are arranged To do.

Here, FIG. 12 shows an example of the configuration of the dynamic monitoring table. In FIG. 12, AD is an address uniquely assigned to each gateway 13 constituting each of the monitoring devices 1 ₁ to 1 _n , and in this example, for the sake of simplification of description, each of the monitoring devices 1 ₁ to 1 _n. It is made to correspond one-to-one with the subscript of the code. TM _k indicates a time interval (unit: second) for performing dynamic monitoring preset for each of the monitoring devices 1 ₁ to 1 _n . The time TM _k is, for example, 1 second, 1 minute, 10 minutes, and the like 30 minutes. Note that the subscript “k” of the time TM _k means a variable for monitoring the dynamics of each of the monitoring devices 1 ₁ to 1 _n . There is a one-to-one correspondence between the value of the variable k and the subscript of the sign of each of the monitoring devices 1 ₁ to 1 _n . The same applies to PC _k and TH _k described later.

The PF is a flag indicating which of the two dynamic monitoring methods to be described later is adopted for each of the monitoring devices 1 ₁ to 1 _n . The first dynamic monitoring method is a method for comparing a standard image with a moving image captured by the corresponding monitoring device 1. This first dynamic monitoring method is applied to monitoring points where the image of the side of the track does not change with time, such as a tunnel, a bridge such as an iron bridge, or a track near the station platform. This is effective. In other words, in the case of a tunnel, a standard image in which no object is present on the track just before the entrance of the tunnel is compared with a moving image in which the sediment has collapsed. Compare the standard image of the bridge pier from the base to the opposite shore and the moving image of the bridge collapsed due to the pier loss, etc., and in the case of the platform, there is no object on the track directly under the platform. A standard image that does not exist is compared with a moving image of moving or stationary objects such as passengers who have fallen on the track. In particular, when there is a stationary object on the track directly under the platform, it is particularly dangerous because passengers may fall and become unconscious and cannot take avoidance actions themselves. The flag PF of the monitoring device 1 installed at the monitoring point to which the first dynamic monitoring method is applied is set to “0”.

  On the other hand, the second dynamic monitoring method is a method of comparing a moving image shot by a certain monitoring device 1 with a moving image shot immediately before by the monitoring device 1. This second dynamic monitoring method is effective when applied to a monitoring point requiring a change in the image of the track side with time even during normal operation, such as inside a railroad crossing. That is, in the case of the inside of a level crossing, when a train is not approaching the level crossing, the inside of the level crossing is an area where pedestrians and vehicles can freely pass through, and a moving image from the monitoring device 1 installed in the vicinity thereof. Naturally, the traffic of many pedestrians and vehicles is filmed. In this case, the pedestrian may stop inside the railroad crossing for about several seconds. Thus, even if a moving image from the monitoring device 1 is photographed with something other than a permanent object such as a circuit breaker when the train is not approaching the railroad crossing, it is not a situation that is immediately dangerous. On the other hand, if a pedestrian or a bicycle falls or the time that the pedestrian or vehicle stays in the crossing is long due to a vehicle engine trouble, etc., the time until the train arrives at the crossing. It is considered that the situation is such that it is impossible for a pedestrian or vehicle to escape outside the railroad crossing. Therefore, in the second dynamic monitoring method, when there is no change in comparing the extracted moving image with the moving image immediately before the predetermined moving image, the above-described dangerous situation occurs. It is judged. The flag PF of the monitoring device 1 installed at the monitoring point to which the second dynamic monitoring method is applied is set to “1”. Since the moving image (encoded data) supplied from the monitoring device 1 to which the second dynamic monitoring method is applied needs to be compared with the moving image captured immediately before, the storage area of the corresponding storage unit is set. It is necessary to secure a large area and to reduce the storage area to be overwritten.

PC _k is a point that is incremented when the comparison result obtained by adopting either of the two dynamic monitoring methods for each of the monitoring devices 1 ₁ to 1 _n matches a specific condition set in advance. It is. TH _k is a threshold value set in advance for each of the monitoring devices 1 ₁ to 1 _n . When the corresponding point PC _k exceeds the threshold value TH _k , the driver of the traveling train 42 or the like Issue a warning.

Next, among the operations of the safe operation support system configured as described above, the operation of the behavior monitoring server 62 will be described with reference to the flowchart shown in FIG. The operation of each component other than the behavior monitoring server 62 is the same as in the case of the above-described second embodiment, and a description thereof will be omitted. The behavior monitoring server 62 operates normally after the power is turned on, and the following operations are always performed unless special control is performed from the outside. That is, the control unit of the behavior monitoring server 62 always executes the behavior monitoring process, and first proceeds to the processing of step SB1 shown in FIG. 13 to monitor the behavior for each of the monitoring devices 1 ₁ to 1 _n. After the variable k is set to 1, the process proceeds to step SB2.

At step SB2, the control unit of the dynamic monitoring server 62 reads the time TM _k from kinetic monitoring table, determines whether a predetermined time has elapsed TM _k than the previous dynamics monitoring. When the determination result is “NO”, the control unit of the behavior monitoring server 62 repeats the same determination. When a certain time has elapsed, the determination result in step SB2 is “YES”, and the control unit of the behavior monitoring server 62 proceeds to step SB3. In this case, since the variable k is 1, the time TM _k is 1 second. In step SB3, the control unit of the dynamic monitoring server 62 accesses the video accumulation server 32, extracts the moving image (encoded data) of the monitoring device _1k , stores it in a predetermined storage area of the storage unit, and then performs step Proceed to SB4. In the present case, since the variable k is 1, the control unit of the dynamic monitoring server 62 accesses the video storage server 32 extracts the encoded data of the monitoring device 1 _1, stored in a predetermined storage area of the storage unit To do.

In step SB4, the control unit of the behavior monitoring server 62 refers to the behavior monitoring table and determines whether or not the flag PF is set to “0”. If this determination is “YES”, the control unit of the behavior monitoring server 62 proceeds to step SB5. In this case, since the variable k is 1, the flag PF is set to “0” with reference to the behavior monitoring table shown in FIG. Therefore, the control unit of the behavior monitoring server 62 proceeds to step SB5. In step SB5, the control unit of the behavior monitoring server 62 adopts the first behavior monitoring method described above, and the standard image of the monitoring device 1 _k stored in advance in a predetermined storage area of the storage unit, and step SB3. After comparing with the moving image captured by the monitoring device 1 _k extracted in the process and stored in the predetermined storage area of the storage unit, the process proceeds to step SB7. In the present case, since the variable k is 1, the control unit of the dynamic monitoring server 62, the foot of iron bridge 51 monitoring apparatus 1 ₁ that is previously stored in a predetermined storage area of the storage unit is installed in the other side and the standard image piers are continuous to the foot, and extracted in the processing in step SB3, comparing the moving image captured by the monitoring apparatus 1 ₁ that is stored in a predetermined storage area of the storage unit.

On the other hand, if the determination result in step SB4 is “NO”, that is, if the flag PF of the referenced behavior monitoring table is set to “1”, the control unit of the behavior monitoring server 62 proceeds to step SB6. . In step SB6, the control unit of the behavior monitoring server 62 adopts the second behavior monitoring method described above, and the moving image photographed immediately before by the monitoring device 1 stored in the predetermined storage area of the storage unit. After comparing the image with the moving image taken by the monitoring device 1 _k extracted in the process of step SB3 and stored in the predetermined storage area of the storage unit, the process proceeds to step SB7.

  In step SB7, the control unit of the behavior monitoring server 62 determines whether or not the comparison result in step SB5 or SB6 matches a predetermined condition set in advance. That is, in the case of the comparison result in step SB5, the control unit of the behavior monitoring server 62 determines that the condition is met if there is a difference between the entire standard image and the entire extracted moving image, and the process of step SB6 In the case of the comparison result, if there is no difference between a portion of the immediately preceding moving image and a portion corresponding to the portion of the extracted moving image corresponding to the immediately preceding moving image, it is determined that the condition is met. When the determination result of step SB7 is “YES”, the control unit of the behavior monitoring server 62 proceeds to step SB8, and when the determination result of step SB7 is “NO”, the process proceeds directly to step SB9. In this case, since the variable k is 1, the control unit of the dynamic monitoring server 62 has a difference between the standard image in which the pier is continuous from the base of the iron bridge 51 to the base of the opposite bank and the extracted moving image. For example, if the extracted moving image is a photograph of a state in which the bridge has collapsed due to a bridge pier loss or the like, it is determined that the condition is met (“YES”), and between the standard image and the extracted moving image, If there is no difference, it is determined that the conditions are not met (“NO”).

In step SB8, the control unit of the behavior monitoring server 62 increments and updates the value of the point PC _k corresponding to the variable k in the behavior monitoring table shown in FIG. 12, and then proceeds to step SB9. In this case, since the variable k is 1, the control unit of the behavior monitoring server 62 increments 1 to the value “0” of the corresponding point PC _{k in} the behavior monitoring table shown in FIG. In step SB9, the control unit of the behavior monitoring server 62 reads the value of the point PC _k and the threshold value TH _k corresponding to the variable k from the behavior monitoring table shown in FIG. 12, and the value of the point PC _k is the threshold value TH. Determine whether it is greater than _k . This process is performed because the nature of the monitoring point and the situation where it occurs also vary, and the degree of danger to be avoided is also different. In addition, in order to perform more precise dynamic monitoring, it is necessary to change the point assigning method for each monitoring device 1. When the determination result of step SB9 is “YES”, the control unit of the behavior monitoring server 62 proceeds to step SB10, and when the determination result of step SB9 is “NO”, the process proceeds directly to step SB11. In this case, since the variable k is 1, a value “1” is preset as the threshold value TH _{k in the} dynamic monitoring table shown in FIG. This is because, in the case of the iron bridge 51, a serious accident occurs if the bridge collapses.

  In step SB10, the control unit of the behavior monitoring server 62 reads out, for example, a warning message (one or both of character data and voice data) stored in advance in the storage unit for each monitoring device 1, and displays the read warning message. Along with the address AD of the corresponding monitoring device 1, the information is transmitted to the train mounting device 3 via the gateway 13 and the radio base station 12 of the monitoring device 1 communicating with the accessing train mounting device 3, and then the process proceeds to step SB11. . Thereby, the control unit 22 of the train mounting device 3 that has received the warning message and the address AD of the monitoring device 1 changes the color of the frame surrounding the divided display area corresponding to the address AD of the monitor 25, or the warning message is displayed. If it is character data, the warning message is superimposed on the divided display area corresponding to the address AD of the monitor 25 and displayed normally or blinking. If the warning message is voice data, it is not shown. The warning message is output from the speaker. In this case, since the variable k is 1, as the warning message, for example, “the iron bridge has collapsed” can be considered. As a result, the driver of the train 42 can be alerted, recognize that the iron bridge 51 has collapsed, and take measures to avoid danger such as reducing the speed of the train 42.

  The warning method may be changed according to the distance from the traveling train 42. Taking FIG. 6 as an example, if there is a collapse of earth and sand near the entrance of the tunnel 54, which is relatively long from the train 42, there is time to arrive at the site, and slow braking, slow driving, etc. Since the risk avoidance measures can be sufficiently handled, a relatively gentle warning method, for example, the color of the frame surrounding the divided display area may be changed. In this case, the occurrence of a secondary accident can be prevented when the driver rushes and suddenly brakes.

  Further, as the other party of the warning, not only the driver of the traveling train 42 described above but also an administrator of an operation management facility such as an operation control room may be used. This warning is made, for example, by connecting the network 2 and a terminal such as a general-purpose personal computer installed in the operation management facility. In the process of step SB10 described above, the control unit of the dynamic monitoring server 62 also connects to this terminal. The address AD of the monitoring device 1 corresponding to the warning message described above may be transmitted. In this case, the manager of the operation management facility will give instructions to the drivers of other trains running near the location where the abnormal situation has occurred, or to station staff stationed at stations located near the location. Can be given.

  In step SB11, the control unit of the behavior monitoring server 62 increments the variable k by 1, and then proceeds to step SB12. In step SB12, the control unit of the behavior monitoring server 62 determines whether or not the variable k is larger than a constant n indicating the number of monitoring devices 1. If the determination result is “NO”, the control unit of the behavior monitoring server 62 returns to step SB2 and repeats the processing of steps SB2 to SB11 described above. Thereby, the dynamic monitoring process is executed for the remaining monitoring devices 1. On the other hand, if the determination result in step SB12 is “YES”, that is, if the variable k is greater than the constant n, the control unit of the behavior monitoring server 62 returns to step SB1 and performs the processes in steps SB1 to SB11 described above. repeat.

  Thus, according to the configuration of this example, the dynamic monitoring server 62 is provided, and the encoded data stored for each monitoring device 1 in the storage unit of the video accumulation server 32 is periodically extracted to monitor the dynamic monitoring process. It is carried out. Therefore, although the effect obtained in the second embodiment described above can be obtained, the driver of the train 42 can immediately take a risk avoidance measure when an abnormal situation occurs.

Embodiment 4 FIG.
In the third embodiment described above, an example in which a warning is issued to the driver of the train 42 and the like has been shown, but the present invention is not limited to this. For example, risk avoidance measures may be automatically executed by linking this safe operation support system with a signal system or an ATS (automatic train stop device). First, when linking the safe operation support system and the signal system, at the time of the processing in step SB10 described above, for example, the control unit of the dynamic monitoring server 62 has at least the monitoring device 1 for the signal system. In order to transmit a predetermined command for displaying each signal installed in the closed section including the installed monitoring point to be stopped, and to gradually display the signal installed at the entrance of the closed section It is preferable to transmit the predetermined command. In this case, the control unit of the behavior monitoring server 62 has a blocking section in the reverse direction parallel to the blocking section including the monitoring point where the monitoring device 1 is installed (for example, the monitoring device 1 is connected to the signaling system). When installed on the line side, it is installed at the entrance of the blockage section as well as sending a predetermined command to make each signal installed in the blockage stop display. It is preferable to transmit a predetermined command for displaying the signal slowly. Next, when this safe operation support system and ATS are linked, an emergency stop signal may be issued to each train that is traveling at a monitoring point where the monitoring device 1 is installed. In this way, the disturbance of the diagram can be minimized, and a secondary disaster can be prevented in advance.

Embodiment 5 FIG.
In each embodiment mentioned above, although the example which installs the monitoring apparatus 1 permanently was shown, this invention is not limited to this. For example, a movable monitoring device having a function equivalent to that of the monitoring device 1 may be mounted on a security work vehicle such as an automobile or a railroad vehicle. In this case, for example, when a freight train carrying dangerous goods is operated, it is possible to install a monitoring device that can be temporarily moved at an important point on the planned operation route. In addition, such a movable monitoring device may be installed at a monitoring point requiring a temporary substitute for the failed monitoring device 1. Furthermore, when a road on which a car parallel to the track can run is installed, a car equipped with the movable monitoring device may be run along the road. Thereby, the effect similar to having kept track maintenance work visually while the track maintenance staff walked conventionally can be acquired.

Embodiment 6 FIG.
In each of the above-described embodiments, an example in which each monitoring device 1 and the support device 4 or 61 are connected via the network 2 has been described, but the present invention is not limited to this. For example, you may comprise so that wireless communication is possible between the monitoring apparatuses 1 or between each component of the monitoring apparatus 1 and the assistance apparatus 4 or 61. FIG. In this case, a wireless relay function may be added to each monitoring device 1 or a device dedicated to wireless relay may be installed. In any case, using the well-known wireless relay technology, the gateway 13 described above is configured to virtually function as each component of the support device 4 or 61 with respect to the monitoring device 1 and the support device 4 or 61. What is necessary is just to newly provide the part which acts as a gateway of a monitoring apparatus virtually with respect to each component, and to exchange the data which should be relay-transmitted between both.

The embodiment has been described in detail with reference to the drawings. However, the specific configuration is not limited to the embodiment, and there are design changes and the like without departing from the scope of the invention. Are also included in the present invention.
For example, in each of the above-described embodiments, each monitoring device 1 has shown an example in which encoded data is always transmitted to the support device 4 or 61. However, the present invention is not limited to this. The encoded data may be transmitted immediately before the train passes according to the diagram.
In each of the above-described embodiments, the video storage server 32, the authentication server 33, the HA server 34, the MIS manager 35, and the dynamic monitoring server 62 are separately provided. However, the present invention is not limited to this. One or a plurality of servers having all or part of the functions of the server 32, the authentication server 33, the HA server 34, the MIS manager 35, and the behavior monitoring server 62 may be provided.

  Further, in each of the above-described embodiments, the Mobile IP protocol is adopted for wireless communication between the monitoring device 1 and the train mounting device 3, and reception of a beacon signal, connection request, authentication, care of address assignment, care of address is performed. Although an example of performing processing such as address registration has been shown, the present invention is not limited to this. For example, any communication protocol may be used for wireless communication between the monitoring device 1 and the train-mounted device 3, such as reception of a beacon signal, connection request, authentication, care of address assignment, care of address registration, etc. This process is not necessarily performed.

Further, in the above-described second embodiment, the display area of the monitor 25 is fixed to 4 divisions, and the moving images from the _four monitoring devices 11 to ₁₄ are divided into the upper left division display area UL in order from the train 42. Although an example of displaying in the divided display area UR, the lower left divided display area DL, and the lower right divided display area DR has been shown, the present invention is not limited to this. For example, in situations where only four monitoring device 1 ₁ to 1 ₄ are installed, the train 42, after an off-communicable range of the radio base station 12 constituting the monitoring device 1 _1, the monitoring device 1 ₂ When approaching the installed railroad crossing 52, unlike the display screen shown in FIG. 8, nothing may be displayed on the monitor display 25 in the lower right divided display area DR. However, in this case, by monitoring device 1 ₂ a moving image from the monitoring device 1 ₁ installed in the surveillance point where the train 42 has already passed is sent to the train 42, the divided display region of the lower right of the monitor 25 DR it may be displayed moving images from the monitoring device 1 _1. Further, a desired moving image may be deleted by operating the operation unit 24 such as by touching the divided display area of the monitor 25 where the driver wants to delete the screen. It may be automatically deleted after a predetermined time set individually after starting the display. Furthermore, the display of the monitor 25 may be changed when a moving image is newly supplied from the monitoring device 1 installed at a monitoring point in front of the train 42 as the train 42 advances. In the second embodiment described above, an example in which the display area of the monitor 25 is fixed to four is shown. However, the present invention is not limited to this, and the display area of the monitor 25 is changed according to the number of moving images to be supplied. You may divide into 2 divisions, 3 divisions, 4 divisions, or more. In short, the shooting location of the moving image displayed on the display screen of the monitor 25 is associated with the current position of the train 42, and the driver can intuitively grasp the sense of distance from the train 42 to the shooting location. As long as the display is possible, the display position, the number of divisions, etc. may be arbitrary.

In the second embodiment described above, as shown in FIG. 6 with four dashed ellipse, the communication range of each monitoring device 1 ₁ to 1 ₄ shows an example that does not overlap, without being limited thereto , it may overlap a communication range of each monitoring device 1 ₁ to 1 _4. This is because even in this case, it is only necessary to select and receive the radio wave having the strongest radio wave intensity.
In each of the above-described embodiments, an example in which the camera unit 11 captures a moving image has been described. However, the present invention is not limited thereto, and the camera unit 11 may capture a still image.

  Moreover, in each above-mentioned embodiment, although the train mounting apparatus 3 showed the example which is an exclusive apparatus, it is not limited to this. For example, the train mounting device 3 may be a general-purpose personal computer. In that case, the beacon signal reception confirmation program, the connection request program, the care of address registration request program, the moving image request program, The moving image display program or the like is installed in a storage medium as one of application programs.

Further, in each of the above-described embodiments, an example in which the present invention is applied to ensuring train operation safety has been described. However, the present invention is not limited to this, and the present invention is mainly a mobile that travels on a specific travel route on land. It may be applied to ensure safe operation.
In addition, each of the above-described embodiments can divert each other's technology as long as there is no particular contradiction or problem in the purpose, configuration, or the like.

It is a block diagram which shows the structure of the safe operation assistance system which is Embodiment 1 of this invention. It is a perspective view which shows the external appearance structure of a monitoring apparatus. It is the schematic which shows the use condition of a safe driving assistance system. It is a flowchart which shows the process of a train mounting apparatus, a video storage server, an authentication server, a HA server, and a MIS manager. It is a block diagram which shows the structure of the safe operation assistance system which is Embodiment 2 of this invention. It is the schematic which shows the use condition of a safe driving assistance system. It is a figure which shows an example of the display of a monitor. It is a figure which shows an example of the display of a monitor. It is a figure which shows an example of the display of a monitor. It is a figure which shows an example of the display of a monitor. It is a block diagram which shows the structure of the safe operation assistance system which is Embodiment 3 of this invention. It is a figure which shows an example of a structure of a dynamic monitoring table. It is a flowchart which shows the process of a movement monitoring server.

Explanation of symbols

1, 1 ₁ to 1 _n monitoring device, 2 network, 3 train mounted device (mounted device), 4, 61 support device, 11 camera unit, 12 wireless base station, 13 gateway, 13a switch, 14 antenna, 21 mobile router, 22 control unit, 23 storage unit, 24 operation unit, 25 monitor (display means), 26 antenna, 31 media converter, 32 video storage server, 33 authentication server, 34 HA server, 35 MIS manager, 41 platform, 42 train, 43 Railroad tracks, 51 railway bridges, 52 railroad crossings, 53 platforms, 54 tunnels, 62 dynamic monitoring servers.

Claims (10)

Comprising a plurality of monitoring devices installed in the running path near the moving body, a tower mount device mounted on the movable body, the support device and that the connected monitor and via the network,
Each of the monitoring devices supplies the support device with an image taken on or near the corresponding travel route, and sends a plurality of images transmitted to the support device in response to a request from the mounting device. Send to the moving body while traveling,
The support device stores the image for each of the monitoring devices in a storage unit, and reads the images of the plurality of monitoring devices including the monitoring device from the storage unit in response to a request of the monitoring device. , Send to the monitoring device,
The mounting device transfers the plurality of images transmitted by requesting the images to the monitoring device that can communicate with each of the monitoring devices and the movement to each of the divided display areas of the display unit in which the display area is divided. A safe operation support system characterized by displaying in correspondence with the relative position to the body . The safety operation according to claim 1, wherein the support device outputs information about a warning when a change that matches a predetermined condition occurs in the image of the monitoring device stored in the storage unit. Support system. The support device compares a standard image corresponding to each of the monitoring devices stored in the storage unit in advance with the image of the monitoring device stored in the storage unit, and based on the difference between the images, the image To determine whether or not a change that meets the specified condition has occurred
The safe operation support system according to claim 2, wherein: The support device compares the images of the monitoring devices stored in the storage unit in the past with the images of the monitoring devices stored in the storage unit, and based on the difference between the two, Determine whether a change that matches a given condition has occurred in the image
The safe operation support system according to claim 2, wherein: The support device includes:
The standard image corresponding to each of the monitoring devices stored in the storage unit in advance and the image of the monitoring device stored in the storage unit are compared, and based on the difference between them, the image matches a predetermined condition A process for determining whether or not a change has occurred,
The image previously captured by each monitoring device stored in the storage unit is compared with the image of the monitoring device stored in the storage unit, and based on the difference between them, the image is subjected to a predetermined condition. Processing to determine whether or not a matching change has occurred,
Any one of the processes can be selected according to the surrounding environment of the monitoring device.
The safe operation support system according to claim 2, wherein: Comprising a plurality of monitoring devices installed in the running path near the moving body, a tower mount device mounted on the movable body, the support device and that the connected monitor and via the network,
Each of the monitoring devices supplies the support device with an image taken on or near the corresponding travel route, and sends a plurality of images transmitted to the support device in response to a request from the mounting device. Send to the moving body while traveling,
The support device stores the image for each of the monitoring devices in a storage unit, and reads the images of the plurality of monitoring devices including the monitoring device from the storage unit in response to a request of the monitoring device. , Send to the monitoring device,
The mounting device transfers the plurality of images transmitted by requesting the images to the monitoring device that can communicate with each of the monitoring devices and the movement to each of the divided display areas of the display unit in which the display area is divided. A safe driving support method, characterized by displaying in correspondence with a relative position to the body . The safety operation according to claim 6, wherein the support device outputs information about a warning when a change that matches a predetermined condition occurs in the image of the monitoring device stored in the storage unit. Support method. The support device compares a standard image corresponding to each of the monitoring devices stored in the storage unit in advance with the image of the monitoring device stored in the storage unit, and based on the difference between the images, the image To determine whether or not a change that meets the specified condition has occurred
The safe operation support method according to claim 7, wherein: The support device compares the images of the monitoring devices stored in the storage unit in the past with the images of the monitoring devices stored in the storage unit, and based on the difference between the two, Determine whether a change that matches a given condition has occurred in the image
The safe operation support method according to claim 7, wherein: The support device includes:
The standard image corresponding to each of the monitoring devices stored in the storage unit in advance and the image of the monitoring device stored in the storage unit are compared, and based on the difference between them, the image matches a predetermined condition A process for determining whether or not a change has occurred,
The image previously captured by each monitoring device stored in the storage unit is compared with the image of the monitoring device stored in the storage unit, and based on the difference between them, the image is subjected to a predetermined condition. Processing to determine whether or not a matching change has occurred,
Any one of the processes can be selected according to the surrounding environment of the monitoring device.
The safe operation support method according to claim 7, wherein:

Images