WO2016051504A1 - Ip通信システム、ipアドレス設定装置、及びipアドレス設定方法 - Google Patents
Ip通信システム、ipアドレス設定装置、及びipアドレス設定方法 Download PDFInfo
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- WO2016051504A1 WO2016051504A1 PCT/JP2014/076085 JP2014076085W WO2016051504A1 WO 2016051504 A1 WO2016051504 A1 WO 2016051504A1 JP 2014076085 W JP2014076085 W JP 2014076085W WO 2016051504 A1 WO2016051504 A1 WO 2016051504A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/02—Topology update or discovery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/50—Address allocation
- H04L61/5007—Internet protocol [IP] addresses
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/50—Address allocation
- H04L61/5038—Address allocation for local use, e.g. in LAN or USB networks, or in a controller area network [CAN]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/50—Address allocation
- H04L61/5046—Resolving address allocation conflicts; Testing of addresses
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
Definitions
- the present invention relates to a technology for setting an IP (Internet Protocol) address in an IP device.
- IP Internet Protocol
- IP address of each IP device is set one by one, and then the device information of each IP device is set using the set IP address.
- IP device such as a network camera
- the same initial IP address is set to the same type of IP device when shipped from the factory. Accordingly, when a plurality of IP devices of the same type are used, it is not possible to communicate using the factory default IP address. Therefore, first, it is necessary to set the IP address of each IP device.
- the IP address can be set arbitrarily based on the MAC address unique to the IP device (Media Access Control Address), but the MAC address is a 6-digit hexadecimal number. Therefore, when the number of IP devices is large, the method of setting the IP address based on the MAC address is not preferable because an operator is likely to make an error.
- Patent Document 1 describes an IP communication technique used in a train monitoring system including a plurality of IP devices (network cameras or the like).
- An object of the present invention is to provide a technique for setting an IP address for each of a plurality of IP devices.
- a typical configuration of the IP communication system of the present invention for solving the above-described problems is as follows. That is, A switching hub having at least first to (n + 1) -th ports (n is an integer of 2 or more), first to n-th IP devices connected to the first to n-th ports, and the (th an IP address setting device connected to the (n + 1) port, The IP address setting device A first port open instruction is sent to the switching hub to open the first port and close the second to n-th ports, and then to the first IP device. Send the first IP address set to The switching hub is When the first port open instruction is received from the IP address setting device, the first port is opened, the second to nth ports are closed, and the first IP address is closed. When receiving the IP address, the first IP address is transmitted to the first IP device.
- a typical configuration of the IP address setting device of the present invention is as follows. That is, A switching hub having at least first to (n + 1) th ports (n is an integer equal to or greater than 2), wherein the first to nth IP devices are respectively connected to the first to nth ports; An IP address setting device connected by a port of (n + 1), A first port open instruction is sent to the switching hub to open the first port and close the second to n-th ports, and then to the first IP device. An IP address setting device that transmits a first IP address to be set in
- a typical configuration of the IP address setting method of the present invention is as follows. That is, A switching hub having at least first to (n + 1) -th ports (n is an integer of 2 or more), first to n-th IP devices connected to the first to n-th ports, and the (th an IP address setting method in an IP communication system comprising: an IP address setting device connected to a port of (n + 1), The IP address setting device transmitting to the switching hub a first port opening instruction for opening the first port and closing the second to nth ports; , The IP address setting device transmitting a first IP address to be set in the first IP device to the switching hub; When the switching hub receives the first port open instruction from the IP address setting device, the switching hub opens the first port and closes the second to nth ports; , When the switching hub receives the first IP address from the IP address setting device, the step of transmitting the first IP address to the first IP device; An IP address setting method comprising:
- IP addresses can be easily set for a plurality of IP devices.
- 1 is a configuration diagram of an IP communication system according to an embodiment of the present invention. It is a port number / IP address correspondence table of the setting device according to the embodiment of the present invention. It is the IP address setting sequence diagram which concerns on embodiment of this invention (the 1). It is an IP address setting sequence diagram (the 2) based on embodiment of this invention. It is an IP address setting sequence diagram (the 3) based on embodiment of this invention. It is a display example (during IP address setting) of the setting device according to the embodiment of the present invention. It is a display example (IP address setting completed) of the setting apparatus which concerns on embodiment of this invention.
- FIG. 1 is a layout diagram of a train IP device according to an embodiment of the present invention, and is a layout diagram when the vehicle 1 is viewed from above.
- An IP device is a device that has an IP address and can communicate with other IP devices using the IP address.
- a plurality of IP devices (camera 21, NDR 22, monitor 23, and control device 24) are signal-connected to a switching hub (SWH: relay device) 11 in the vehicle 1.
- SWH relay device
- the vehicle 1 in the example of FIG. 1 is the head vehicle of the train
- a switching hub 11 is also installed in the intermediate vehicle of the train, and a plurality of IP devices are signal-connected to the switching hub 11.
- the switching hub 11 is an IP device that relays communication between IP devices connected to the switching hub 11. Specifically, when transmission information is received from an IP device connected to the switching hub 11 (this transmission information includes a destination IP address), the transmission information is transmitted only to the IP device of the destination IP address of the transmission information. Send.
- This transmission information includes a destination IP address
- the transmission information is transmitted only to the IP device of the destination IP address of the transmission information. Send.
- the connection between the switching hub 11 and each IP device is schematically shown in FIG. 1 and will be described in detail later.
- the camera (imaging device) 21 captures an image of an imaging target, generates image information, and, for example, a network digital recorder (NDR) 22 that records image information or a monitor that displays image information via the switching hub 11. 23.
- NDR network digital recorder
- a total of 11 cameras 21 are provided: D1 to D4 provided outside the vehicle 1, and V1 to V4, S1 to S2, and FF provided inside the vehicle 1.
- the network digital recorder (NDR) 22 records the image information received from the camera 21 via the switching hub 11.
- the monitor 23 displays the image information received from the camera 21 via the switching hub 11 so that it can be visually observed.
- the cocoon control unit (CU) 24 controls each IP device via the switching hub 11. For example, the direction of the camera 21 is changed. Alternatively, the network digital recorder 22 is instructed at which timing the image information from which camera 21 is recorded. Alternatively, the monitor 23 is instructed at what timing the image information from which camera 21 is displayed.
- the switching hub 11 is signal-connected to an IP address setting device (SU) 12 for setting an IP address for each IP device.
- IP address setting device 12 is also simply referred to as a setting device 12.
- the setting device 12 is connected to the switching hub 11 after mounting each IP device on the vehicle 1 and before starting operation. And the setting apparatus 12 sets each IP address with respect to each IP apparatus mounted in the vehicle 1 and connected to the switching hub 11.
- the IP address of each IP device remains the initial IP address at the time of shipment from the factory.
- the initial IP addresses of the 11 cameras 21 are the same. Therefore, it is necessary to rewrite the IP addresses of the respective IP devices so that they can be distinguished from each other.
- the setting device 12 rewrites the IP address of each IP device using a predetermined address conversion list (correspondence table in FIG. 3 described later).
- the setting device 12 is removed after setting the IP address for each IP device.
- the setting device 12 may be configured to be always connected to the switching hub 11.
- the setting device 12 can be configured by a general personal computer, for example.
- FIG. 2 is a configuration diagram of the IP communication system according to the embodiment of the present invention.
- the setting device 12 is connected to the port 12 (P12: port of port number 12) of the switching hub 11, and each IP device is connected to a port other than the port 12.
- the setting device 12 can be connected to a port other than the port 12.
- the port number n is referred to as port n.
- the switching hub 11 includes a SWH control unit 11a, a SWH storage unit 11b, and ports 1 to 16 (P1 to P16).
- the SWH storage unit 11b and the ports 1 to 16 are signal-connected to the SWH control unit 11a.
- the port is an entrance (communication port) through which the switching hub 11 communicates with the outside.
- the SWH control unit 11a can individually set the ports 1 to 16 to the closed state (closed state) or the open state (open state).
- the closed state is a state in which the port cannot communicate with the outside.
- the open state is a state in which the port can communicate with the outside.
- the SWH control unit 11a inquires the IP device connected to each port, for example, periodically for the IP address of each IP device, and receives and obtains the IP address from each IP device. To do. Then, the port number and the IP address of the IP device connected to the port are associated with each other, and are written and stored in the SWH storage unit 11b. The association may be performed with identification information that can specify an IP device such as a MAC address instead of the IP address.
- the SWH storage unit 11b stores IP addresses in association with ports 1 to 16, respectively. That is, the IP address of the IP device connected to each of the ports 1 to 16 is stored.
- the IP address corresponding to the port 1 is the IP address of the camera 21, and the IP address corresponding to the port 12 is the IP address of the setting device 12.
- the SWH control unit 11a is connected to the ports 1 to 16.
- the initial IP address (factory shipment IP address) of the received IP device is received and acquired, and the port number and the initial IP address of the IP device connected to the port are associated with each other and written and stored in the SWH storage unit 11b. .
- the configuration of the IP device 20 is shown by representing IP devices such as the camera 21, the NDR 22, the monitor 23, and the control device 24.
- the IP device 20 includes an IP device control unit 20a and an IP device storage unit 20b.
- the IP device storage unit 20b is signal-connected to the IP device control unit 20a.
- the IP device storage unit 20b stores the IP address of the IP device 20.
- a factory shipment IP address that is an IP address at the time of factory shipment is stored in the IP device storage unit 20b.
- the IP device control unit 20 a When receiving the IP address inquiry message from the switching hub 11, the IP device control unit 20 a transmits a response message including the IP address of the IP device 20 to the switching hub 11.
- the inquiry message of the IP address transmitted by the switching hub 11 includes source IP address information (that is, the IP address of the switching hub 11) and an information type.
- the information type indicates that this message is an IP address inquiry message.
- the response message transmitted by the IP device 20 includes destination IP address information (that is, the IP address of the switching hub 11), source IP address information (that is, the IP address of the IP device 20), and an information type. .
- the information type indicates that this message is an IP address response message.
- the IP device control unit 20a When receiving transmission information from another IP device 20 via the switching hub 11, the IP device control unit 20a receives the destination IP address of the transmission information and the IP address of the IP device 20 stored in the IP device storage unit 20b. When the two IP addresses match, the transmission information is determined to be information that the IP device 20 should receive.
- the destination IP address of the transmission information is the IP address of the IP device 20.
- the IP address matches the IP address of the IP device 20 stored in the IP device storage unit 20b is rewritten with the rewrite IP address included in the transmission information.
- the scissor setting device (SU) 12 includes a SU control unit 12a, a SU storage unit 12b, and an operation display unit 12c.
- the SU storage unit 12b and the operation display unit 12c are signal-connected to the SU control unit 12a.
- the operation display unit 12c is configured to include an operation unit that receives input indicating various instructions from the operator, and a display unit that performs various displays.
- the operation unit includes, for example, a keyboard and a mouse.
- the display unit is configured by an LCD (Liquid Crystal Display) or the like, for example.
- the operation display unit 12c may be configured by a touch panel or the like in which the operation unit and the display unit are integrated.
- the SU storage unit 12b associates the IP address (setting IP address) to be set to the IP device 20 connected to each port of the switching hub 11 with each port number of the switching hub 11, and supports port number / IP address correspondence. It is stored as a table (hereinafter abbreviated as a correspondence table).
- the correspondence table is set and changed by the operator via the operation display unit 12c, for example.
- the correspondence table may be configured to store IP address information for specifying the set IP address instead of the set IP address.
- the IP address information may be the set IP address itself.
- FIG. 3 is a port number / IP address correspondence table of the setting device according to the embodiment of the present invention.
- IP address information for specifying an IP address to be set for each IP device 20 is associated with port numbers 1 to 16 of each port of the switching hub 11.
- port number 1 is associated with IP address information “1”
- port number 16 is associated with IP address information “21”.
- IP address information for specifying the set IP address is used.
- the IP address information indicates a part (fourth octet) of the set IP address.
- the first to third octets of the set IP address are the same in the IP device 20 mounted on the same vehicle 1, that is, the IP device 20 connected to the same switching hub 11.
- the IP address information “1” in FIG. 3 indicates the fourth octet of the IP address “10.24.249.1”, which means the IP address “10.24.249.1”.
- the first to third octets of the IP address specified by each IP address information in FIG. 3 are the same. In this case, “10.42.249”.
- the IP device 20 that is, the IP device 20 connected to the same switching hub 11 mounted in the same vehicle 1 Since the IP address information of the correspondence table can be a part (fourth octet) of the set IP address, it is easy to register or change the IP address information in the correspondence table. Also, by determining the first to third octets according to the vehicle type (type of head vehicle or intermediate vehicle) and vehicle number (number of intermediate vehicle), the IP device can be used in the first to third octets of the IP address. It is possible to distinguish which vehicle is installed. Furthermore, although the IP address setting method in IPv4 has been described in the above embodiment, in IPv6, the same IP address as IPv4 can be set by dividing the section determined by the vehicle type and vehicle number from the section determined by the IP device. It is.
- IP address information for specifying the set IP address (the IP address after rewriting) is unnecessary.
- the IP address information “19” having no corresponding port number indicates the IP address of the switching hub 11.
- the IP address of the switching hub 11 has been set by the operator using a conventional method.
- the device name, setting order, factory shipment IP address, and device information file number of each IP device 20 are associated with port numbers 1 to 16, respectively. Yes.
- the port number, the set IP address (IP address information), the device name, the setting order, the factory shipment IP address, and the device information file are obtained from one port number / IP address correspondence table. Numbers are associated with each other, but these associations may be performed using a plurality of tables. For example, a table that associates a port number with a set IP address, a table that associates a set IP address with a device name, and a table that associates a device name with a device information file number may be different tables.
- the device names D1 to D4, V1 to V4, S1 to D2, and FF are all the same type of cameras 21 as shown in FIG. 1, and their factory shipment IP addresses are the same. Different device names are assigned depending on the installation location of the camera 21, and device information files including different device information are set.
- the device information is information that designates, for example, the direction of the camera 21 and the imaging angle.
- the device names MON1 to MON2 are monitors (display devices), and their factory shipment IP addresses are the same.
- the device name SU is the setting device 12
- the device name NDR is the network digital recorder 22
- the device name CU is the control device 24
- the device name SWH is the switching hub 11.
- the setting order is the order when the SU control unit 12a sets the IP address for each IP device 20 (that is, the address transmission order when the setting device 12 transmits the setting IP address to the switching hub 11),
- the order when setting each device information file (that is, the file transmission order when the setting device 12 transmits the device information file to the switching hub 11) is shown.
- the setting order for the IP address and the setting for the device information file are set in the table of FIG.
- An order may be provided.
- an address transmission order table in which port numbers and IP address transmission orders are associated, and a file transmission order table in which port numbers and apparatus information file transmission orders are associated are provided. You can do it. Further, for example, when the transmission order of the IP address and the device information file is the port number order, the setting order in the table of FIG. 3 can be omitted.
- the setting device 12 passes through the switching hub 11.
- a set IP address is transmitted.
- the setting IP address is calculated and generated in the setting device 12 so as to include the IP address information “15” as the fourth octet. For example, the set IP address “10.24.249.15” is generated.
- the factory shipment IP address “c” is rewritten to this set IP address.
- the setting IP address is transmitted from the setting device 12 via the switching hub 11 to the IP device (camera 21 with the device name D1) connected to the port of port number 1 whose setting order is 2.
- the setting IP address is generated in the setting device 12 so as to include the IP address information “1” as the fourth octet.
- the factory shipment IP address “a” is rewritten to the set IP address.
- the setting IP address information is transmitted from the setting device 12 via the switching hub 11 to the IP device (camera 21 with the device name D2) connected to the port of port number 2 whose setting order is 3. .
- This setting IP address is generated in the setting device 12 so as to include the IP address information “2” as the fourth octet.
- the factory shipment IP address “a” is rewritten to the set IP address.
- the SU storage unit 12b stores the device information file to be set for each IP device 20 in association with the device information file number that is an identifier for specifying the device information file for each version of the device information file. Has been.
- the SU control unit 12a When the SU control unit 12a receives an IP address setting instruction from the operator via the operation display unit 12c, as described above, the SU control unit 12a, for each IP device 20 connected to the switching hub 11 based on the correspondence table of FIG. Each setting IP address is generated. Then, the SU control unit 12a transmits the generated setting IP address to each IP device 20 via the switching hub 11. At that time, as described above, the SU control unit 12a transmits the set IP address of each IP device 20 based on the setting order of the correspondence table of FIG.
- the SU control unit 12a transmits a device information file to each IP device 20 via the switching hub 11 using the IP address.
- the SU control unit 12a transmits the device information file based on the device information file number and the setting order set in the correspondence table of FIG. Specifically, according to the setting order of the table of FIG. 3, the device information file specified by the device information file number of the table of FIG. 3 is read from the SU storage unit 12b, and the IP device 20 associated with the table of FIG. On the other hand, the data is transmitted via the switching hub 11.
- the SWH control unit 11a, the SU control unit 12a, and the device control unit 20a are each provided with a CPU (Central / Processing / Unit) and a memory for storing an operation program of each control unit. Operate according to each operation program.
- a CPU Central / Processing / Unit
- a memory for storing an operation program of each control unit. Operate according to each operation program.
- IP address setting sequence according to the embodiment of the present invention will be described.
- 4 to 6 are No. 1, No. 2, and No. 3, respectively, of the IP address setting sequence diagram according to the embodiment of the present invention.
- the operation of the setting device 12 is controlled by the SU control unit 12a
- the operation of the switching hub 11 is controlled by the SWH control unit 11a
- the operation of the IP device 20 is controlled by the device control unit 20a.
- the IP address setting of the switching hub 11 and the IP address setting of the setting device 12 are performed.
- the IP address setting of the setting device 12 is performed by an operator in the conventional technique using the operation display unit 12c.
- the IP address setting of the switching hub 11 may be performed by an operator using a conventional technique using an operation display unit (not shown) of the switching hub 11, or only the setting device 12 is connected to the switching hub 11.
- the setting device 12 may be used.
- the switching hub 11 When the IP address is set, the switching hub 11 is restarted, and receives and acquires the IP address of the IP device 20 connected to each port. Then, the port number and the IP address of the IP device connected to the port are associated with each other and stored in the SWH storage unit 11b.
- the operation display unit 12c accepts a vehicle type selection from the operator (step S1 in FIG. 4), accepts a vehicle number input from the operator (step S2), and the operator After receiving the version selection of the device information file from (step S3), an IP address setting instruction from the operator, that is, a start button press is received (step S4).
- the setting device 12 When accepting pressing of the start button, the setting device 12 selects a correspondence table corresponding to the vehicle type and vehicle number instructed by the operator. Then, the setting device 12 transmits to the switching hub 11 an all port close instruction for closing all the ports of the switching hub 11 except for the port to which the setting device 12 is connected. For example, the setting device 12 sequentially transmits port close instructions for all the ports (ports 1 to 11 and 13 to 16) of the switching hub 11 except the port 12 to which the setting device 12 is connected, one by one. .
- the switching hub 11 When the port is closed, the switching hub 11 cannot perform communication using the closed port. That is, a message input from the outside cannot be received to the closed port, and a message cannot be transmitted to the outside from the closed port.
- port close processing is sequentially performed on all ports other than the port to which the setting device 12 is connected in the order of port numbers. If there is a port to which the IP device 20 is not connected, that port is also closed.
- the setting device 12 transmits a port close instruction for the port number 1 (port 1) to the switching hub 11 (step S5).
- the switching hub 11 receives the port close instruction for port 1, the switching hub 11 performs the port close process for port 1 (step S6).
- the port close instruction message transmitted by the setting device 12 includes destination IP address information indicating a destination, source IP address information indicating a source, designated port number information specifying a port to be closed, and closing the port. And close instruction information to be instructed.
- the destination IP address information is information for designating the IP device 20 that is the destination of the port close instruction message, and specifically, the IP address of the switching hub 11.
- the transmission source IP address information is information for designating the IP device 20 that is the transmission source of the port close instruction message, and is specifically the IP address of the setting device 12.
- the setting device 12 transmits a port close instruction for the port 2 to the switching hub 11 (step S7).
- the switching hub 11 receives the port close instruction for the port 2, it performs the port close process for the port 2 (step S8). In this way, all the ports of the switching hub 11 are closed except for the port to which the setting device 12 is connected (step S9).
- the setting device 12 After closing all the ports to be closed, the setting device 12 sequentially sets the IP address to each IP device 20 according to the setting order of the correspondence table of FIG. In the present embodiment, when an IP address is set, each IP device 20 is automatically restarted. It is also possible to configure so as not to restart even if an IP address is set.
- the setting device 12 sets an IP address for the port 14 having the first setting order in the correspondence table of FIG. Specifically, the setting device 12 first calculates and generates a setting IP address of the IP device 20 connected to the port 14 using the correspondence table of FIG. 3 (step S11).
- the IP device 20 connected to the port 14 is the network digital recorder 22, and the IP address information (fourth octet) in the correspondence table is “15”. Therefore, the set IP address of the network digital recorder 22 is calculated as “10.22.249.15”.
- the setting device 12 transmits a port open instruction for the port 14 to the switching hub 11 (step S12).
- the port open instruction message transmitted by the setting device 12 includes destination IP address information (that is, the IP address of the switching hub 11), source IP address information (that is, the IP address of the setting device 12), and a port to be opened. Includes designated port number information for designating and open instruction information for instructing to open the port.
- the port 14 is opened and the ports other than the port 12 and the port 14 (ports 1 to 11, 13, 15, 16) are closed.
- a port open instruction to enter the state is configured. That is, the setting device 12 transmits the port close instruction for all the ports and the port open instruction for the port 14 described above, thereby opening the port 14 and closing the ports other than the port 12 and the port 14.
- a port open instruction for setting the status is transmitted.
- the switching hub 11 When the switching hub 11 receives the port open instruction for the port 14, the switching hub 11 performs a port open process for the port 14 (step S13). Thus, IP communication can be performed between the setting device 12 and the network digital recorder 22 connected to the port 14 via the switching hub 11.
- the setting device 12 transmits PING confirmation information (echo request) to the IP device 20 (network digital recorder 22) connected to the port 14 (step S14).
- the PING confirmation information message transmitted by the setting device 12 includes destination IP address information, transmission source IP address information, and information type. The information type indicates that this message is PING confirmation information.
- the PING confirmation information is for confirming whether or not communication with the IP device 20 specified by the destination IP address information is possible, and is repeated for, for example, 10 seconds until a PING response information described later is returned. Sent. If the PING response information is not returned within a predetermined time, the fact that there is no response from the IP device 20 specified by the destination IP address information is displayed on the operation display unit 12c, and the port 1 in the next setting order (second) The process proceeds to IP address setting processing for.
- the destination IP address information of the PING confirmation information message is information that designates the IP device 20 that is the destination of the PING confirmation information message, and is specifically the initial IP address (factory shipment IP address) of the network digital recorder 22. .
- the factory shipment IP address is acquired from the correspondence table of FIG.
- the transmission source IP address information is information that designates the IP device 20 that is the transmission source of the PING confirmation information message, and is specifically the IP address of the setting device 12.
- the switching hub 11 When receiving the PING confirmation information message from the setting device 12, the switching hub 11 transmits the received PING confirmation information message only to the IP device 20 (network digital recorder 22) having the destination IP address of the PING confirmation information message.
- the IP device 20 network digital recorder 22
- the switching hub 11 transmits the received PING confirmation information message only to the IP device 20 (network digital recorder 22) having the destination IP address of the PING confirmation information message.
- the switching hub 11 transmits the received PING confirmation information message only to the IP device 20 (network digital recorder 22) having the destination IP address of the PING confirmation information message.
- the correspondence table between the port number and the IP address stored in the SWH storage unit 11b that is, the correspondence table between the port number and the IP address of the IP device connected to the port. Only when a PING confirmation information message is transmitted.
- the network digital recorder 22 When the network digital recorder 22 receives the PING confirmation information from the setting device 12 via the switching hub 11, when the received PING confirmation information is addressed to itself, that is, the destination IP address of the received PING confirmation information is the network. If it is the IP address (factory shipment IP address) of the digital recorder 22, the PING response information (echo response) is transmitted to the setting device 12 via the switching hub 11 (step S15).
- the PING response information message transmitted by the network digital recorder 22 includes destination IP address information, transmission source IP address information, and information type.
- the information type indicates that this message is PING response information.
- Destination IP address information is information for designating the IP device 20 that is the destination of the PING response information message, and is specifically the IP address of the setting device 12.
- the IP address of the setting device 12 is acquired from the source IP address information of the PING confirmation information message.
- the transmission source IP address information is information for designating the IP device 20 that is the transmission source of the PING confirmation information message, and is specifically the factory shipment IP address of the network digital recorder 22.
- the factory shipment IP address is set in the storage unit of the network digital recorder 22 when the network digital recorder 22 is shipped from the factory.
- the bag setting device 12 can confirm that the predetermined IP device 20 is correctly connected to the port of the predetermined number by properly receiving the PING response information. Specifically, the setting device 12 determines whether or not the transmission source IP address information of the PING response information matches the factory shipment IP address of the port number 14 in the correspondence table of FIG. It can be confirmed that the predetermined IP device 20 (network digital recorder 22) is properly connected to the port (port 14) of the predetermined number.
- the setting device 12 When the setting device 12 cannot properly receive the PING response information, the setting device 12 displays on the operation display unit 12c that the response from the IP device 20 specified by the destination IP address information of the PING confirmation information is not appropriate. Shifts to the IP address setting process for port 1 in the setting order (second).
- setting device 12 After properly receiving the PING response information, setting device 12 transmits the IP address to be set to network digital recorder 22 (step S16).
- This IP address transmission message includes destination IP address information, transmission source IP address information, information type, and data.
- the information type indicates that this message is IP address setting information.
- the data includes an IP address to be set.
- the destination IP address information is information for designating the IP device 20 that is the destination of the IP address transmission message, and specifically, is the factory shipment IP address of the network digital recorder 22. As described above, this factory shipment IP address is acquired from the correspondence table of FIG.
- the transmission source IP address information is information that designates the IP device 20 that is the transmission source of the IP address transmission message, and is specifically the IP address of the setting device 12.
- the switching hub 11 When receiving the IP address transmission message from the setting device 12, the switching hub 11 transmits the received IP address transmission message only to the IP device 20 (network digital recorder 22) of the destination IP address of the IP address transmission message.
- the network digital recorder 22 When the network digital recorder 22 receives the IP address transmission message from the setting device 12 via the switching hub 11 (step S17), the factory IP address stored in the storage unit of the network digital recorder 22 is received. The setting IP address included in the address transmission message is rewritten (step S18). When the IP address is rewritten, the network digital recorder 22 is automatically restarted.
- setting device 12 After transmitting the IP address transmission message, setting device 12 transmits a port close instruction for port 14 to switching hub 11 (step S19).
- the port close instruction message transmitted by the setting device 12 includes destination IP address information (that is, the IP address of the switching hub 11), transmission source IP address information (that is, the IP address of the setting device 12), and , Designated port number information for designating the target port, and close instruction information for instructing to close the port.
- the switching hub 11 When the switching hub 11 receives the port close instruction for the port 14, the switching hub 11 performs the port close process for the port 14 (step S20). Thereby, IP communication becomes impossible between the setting device 12 and the network digital recorder 22 connected to the port 14.
- the setting device 12 sets an IP address for the port 1 whose setting order in the correspondence table of FIG. Specifically, the setting device 12 first calculates the set IP address of the IP device 20 connected to the port 1 using the correspondence table (step S21).
- the setting device 12 transmits a port open instruction for the port 1 to the switching hub 11 (step S22).
- the contents of the port open instruction message are as described above.
- the switching hub 11 When the switching hub 11 receives the port open instruction for port 1, it performs the port open process for port 1 (step S23). Thereby, IP communication becomes possible between the setting device 12 and the camera 21 (D1) connected to the port 1 via the switching hub 11.
- the setting device 12 transmits PING confirmation information (echo request) to the IP device 20 (camera 21 (D1)) connected to the port 1 via the switching hub 11 (step S24).
- PING confirmation information echo request
- the IP device 20 camera 21 (D1)
- the switching hub 11 step S24.
- the contents of the PING confirmation information message are as described above.
- the switching hub 11 When the switching hub 11 receives the PING confirmation information message from the setting device 12, the switching hub 11 transmits the received PING confirmation information message only to the IP device 20 (camera 21 (D1)) of the destination IP address of the PING confirmation information message. .
- the camera 21 (D1) When the camera 21 (D1) receives the PING confirmation information from the setting device 12 via the switching hub 11, the camera 21 (D1) transmits the PING response information (echo response) to the setting device 12 via the switching hub 11 (step S25). ).
- the contents of the PING response information message are as described above.
- the setting device 12 receives the appropriate PING response information, so that the predetermined IP device 20 (camera 21 (D1)) is correctly connected to the port (port 1) having the predetermined number. Can be confirmed.
- the bag setting device 12 After receiving the appropriate PING response information, the bag setting device 12 transmits an IP address transmission message including the IP address to be set to the camera 21 (D1) via the switching hub 11 (step S26).
- the contents of the IP address transmission message are as described above.
- the switching hub 11 When the switching hub 11 receives the IP address transmission message from the setting device 12, the switching hub 11 transmits the received IP address transmission message only to the IP device 20 (camera 21 (D1)) of the destination IP address of the IP address transmission message. .
- the camera 21 (D1) When the camera 21 (D1) receives the IP address transmission message from the setting device 12 via the switching hub 11 (step S27), it receives the factory shipment IP address stored in the storage unit of the camera 21 (D1). The set IP address included in the transmitted IP address transmission message is rewritten (step S28). When the IP address is rewritten, the camera 21 (D1) is automatically restarted.
- the time required for restart (restart time) varies depending on the IP device 20.
- the restart time is, for example, 20 to 30 minutes for the network digital recorder 22 and about 1 minute for the camera 21.
- the second IP device when the restart time of the first IP device (for example, NDR 22) is longer than the restart time of the second IP device (for example, the camera 21), the second IP device transmits the first IP address after transmitting the first IP address.
- the transmission order is determined so as to transmit the IP addresses. Therefore, in the present embodiment, after the IP address is set to the first network digital recorder 22 in the setting order, the second and subsequent cameras 21 (D1 to D4, V1) are set during the restart of the network digital recorder 22. ⁇ V4 etc.) can be set and restarted. That is, while the network digital recorder 22 is restarted, the cameras 21 (D1 to D4, V1 to V4, etc.) can be restarted in parallel.
- the IP addresses are sequentially set according to the setting order of the correspondence table in FIG. 3, so that the IP address setting order of the IP device having a longer restart time is set as the restart time. Can be set earlier than the IP address setting order of the shorter IP device, and the restart time of the entire IP device can be shortened.
- setting device 12 After transmitting the IP address information, setting device 12 transmits a port close instruction for port 1 to switching hub 11 (step S29).
- the contents of the port close instruction message are as described above.
- the switching hub 11 When receiving the port close instruction for port 1, the switching hub 11 performs the port close process for port 1 (step S30). As a result, IP communication between the setting device 12 and the camera 21 (D1) connected to the port 1 becomes impossible.
- step S31 the IP address rewriting of all the IP devices 20 (except the setting device 12) connected to the ports of the switching hub 11 is performed (step S31).
- the setting device 12 sets all ports (ports 1 to 16) to which the IP device 20 is connected among the ports of the switching hub 11. Make it open. That is, the setting device 12 has all the ports (ports 1 to 16) of the switching hub 11 except for the port 12 to which the setting device 12 is connected among all the ports (ports 1 to 16) to which the IP device 20 is connected. 11, 13 to 16) are transmitted to the switching hub 11. Specifically, the setting device 12 sequentially transmits port open instructions regarding the ports 1 to 11 and 13 to 16 of the switching hub 11 one by one.
- the port open process is performed sequentially for each port in the order of port numbers.
- the setting device 12 transmits a port open instruction for the port (port 1) with the port number 1 to the switching hub 11 (step S41).
- the switching hub 11 receives the port open instruction for port 1, the switching hub 11 performs port open processing for port 1 (step S42).
- the setting device 12 transmits a port open instruction for the port 2 to the switching hub 11 (step S43).
- the switching hub 11 receives the port opening instruction for the port 2, the switching hub 11 performs the port opening process for the port 2 (step S44). In this way, all the ports (ports 1 to 11 and 13 to 16) of the switching hub 11 to which the IP device 20 is connected are opened except for the port 12 to which the setting device 12 is connected (step S45). If there is a port to which the IP device 20 is not connected, the port is not opened.
- the switching hub 11 After opening all the ports to be opened, the switching hub 11 receives and acquires the rewritten IP address from the IP device 20. Then, the IP address of the IP device 20 stored in the SWH storage unit 11b is rewritten with the received rewritten IP address. That is, the association between the port number stored in the SWH storage unit 11b and the IP address of the IP device 20 is updated.
- the setting device 12 sequentially transmits PING confirmation information to all the IP devices 20 connected to the ports of the switching hub 11 and receives appropriate PING response information, so that the ports of a predetermined number are transmitted. It is confirmed that the predetermined IP device 20 is correctly connected.
- the destination IP address of this PING confirmation information is the IP address after rewriting.
- the PING confirmation information is sequentially transmitted according to the setting order of the correspondence table in FIG.
- the setting device 12 transmits PING confirmation information to the IP device 20 (network digital recorder 22) having the first setting order in the correspondence table via the switching hub 11 (step S51).
- the destination IP address of this PING confirmation information is the IP address after rewriting.
- the switching hub 11 receives the PING confirmation information from the setting device 12, the switching hub 11 transmits the received PING confirmation information message only to the IP device 20 (network digital recorder 22) of the destination IP address of the PING confirmation information message.
- the network digital recorder 22 When the network digital recorder 22 receives the PING confirmation information from the setting device 12 via the switching hub 11, when the received PING confirmation information is addressed to itself, that is, the destination IP address of the received PING confirmation information is the network. If it is the IP address of the digital recorder 22 (IP address after rewriting), PING response information (echo response) is transmitted to the setting device 12 via the switching hub 11 (step S52).
- the transmission source IP address of the received PING response information is the IP address of the network digital recorder 22 identified by the correspondence table (In other words, when proper PING response information is received, it is determined that the IP address of the network digital recorder 22 has been correctly rewritten and set.
- the setting device 12 transmits the PING confirmation information via the switching hub 11 to the IP device 20 (camera 21 (D1)) in the second setting order of the correspondence table (step S53).
- the destination IP address of this PING confirmation information is the IP address after rewriting.
- the switching hub 11 receives the PING confirmation information from the setting device 12, the switching hub 11 transmits the received PING confirmation information message only to the IP device 20 (camera 21 (D1)) of the destination IP address of the PING confirmation information message.
- the camera 21 (D1) receives the PING confirmation information from the setting device 12 via the switching hub 11, when the received PING confirmation information is addressed to itself, that is, the destination IP address of the received PING confirmation information is If it is the IP address of the camera 21 (D1) (the IP address after rewriting), PING response information (echo response) is transmitted to the setting device 12 via the switching hub 11 (step S54).
- the source IP address of the received PING response information is the IP of the camera 21 (D1) identified in the correspondence table. If it is an address (IP address after rewriting), that is, if proper PING response information is received, it is determined that the IP address of the camera 21 (D1) has been correctly rewritten and set.
- the setting device 12 sequentially transmits PING confirmation information with the rewritten IP address as the destination IP address to all the IP devices 20 connected to the ports of the switching hub 11, and appropriate PING response information is sent. By receiving, it is confirmed that the IP address of each IP device 20 has been correctly rewritten and set (step S55).
- the setting device 12 After confirming that the IP address of each IP device 20 has been correctly rewritten, the setting device 12 sequentially transmits device information files to the IP device 20 connected to the port of the switching hub 11 as necessary. To do.
- device information files are sequentially transmitted via the switching hub 11 in accordance with the setting order of the correspondence table.
- the IP device 20 is automatically restarted.
- the setting device 12 transmits a device information file to the IP device 20 (network digital recorder 22) having the first setting order in the correspondence table via the switching hub 11, that is, a device including the device information file.
- An information file transmission message is transmitted (step S61).
- the device information file transmission message transmitted from the eaves setting device 12 includes destination IP address information, source IP address information, and device information file information.
- Destination IP address information is information for designating the IP device 20 that is the destination of the device information file transmission message, and specifically, the IP address after rewriting of the network digital recorder 22.
- the transmission source IP address information is information for designating the IP device 20 that is the transmission source of the device information file transmission message, and is specifically the IP address of the setting device 12.
- the switching hub 11 When the switching hub 11 receives the device information file transmission message from the setting device 12, the switching hub 11 transmits the received device information file transmission message only to the IP device 20 (network digital recorder 22) of the destination IP address of the device information file transmission message. Send.
- the network digital recorder 22 When the network digital recorder 22 receives the device information file transmission message from the setting device 12 via the switching hub 11 (step S62), when the received device information file transmission message is addressed to itself, that is, the received device When the destination IP address of the information file transmission message is the IP address of the network digital recorder 22 (the IP address after rewriting), the device information file included in the received device information file transmission message is read and the network digital recorder 22 It memorize
- the setting device 12 transmits a device information file via the switching hub 11 to the IP device 20 (camera 21 (D1)) in the second setting order of the correspondence table.
- the device information file is transmitted to all the IP devices 20 that are the device information file transmission target (step S65).
- the received device information file is read and executed.
- the setting time of the device information file (the time when the device information file is set in the IP device 20) is read by the IP device 20 to store the received device information file, and then restarted. This is the time required to execute, and is approximately equal to the time required for restart (restart time).
- the restart time varies depending on the IP device 20. As described above, the restart time is, for example, 20 to 30 minutes for the network digital recorder 22 and about 1 minute for the camera 21.
- the setting time of the first device information file set in the first IP device is the second device information file set in the second IP device (for example, the camera 21). If it is longer than the set time, the transmission order is determined so that the second device information file is transmitted after the first device information file is transmitted. Therefore, while setting the device information file to the network digital recorder 22 with the first setting order, the device information file is set to the cameras 21 (D1 to D4, V1 to V4, etc.) with the second setting order in parallel. can do.
- the device information file is sequentially transmitted in accordance with the setting order of the correspondence table. Therefore, the setting time of the device information file is longer.
- the setting order of the device information file of the IP device can be set earlier than the setting order of the device information file of the IP device having a shorter setting time of the device information file. Setting time can be shortened.
- the switching hub 11 having the first to (n + 1) th ports (n is an integer of 2 or more) and the first to nth ports connected to the first to nth ports, respectively.
- the setting device 12 includes an mth port (m is the first to nth ports). Any one of 1 to n) is opened and an m-th port open instruction is sent to close the first to n-th ports other than the m-th port, and then the m-th IP device The m-th IP address to be set to is transmitted.
- the switching hub 11 When the switching hub 11 receives the mth port open instruction from the setting device 12, the switching hub 11 opens the mth port and closes the first to nth ports other than the mth port. When the mth IP address is received, the mth IP address is transmitted to the mth IP device.
- the setting device 12 transmits the first to n-th IP addresses set to the first to n-th IP devices to the switching hub 11, and then opens the first to n-th ports. To transmit all the ports, and then transmits the m-th device information file to be set in the m-th IP device.
- the setting device 12 connected to the 16th port (port 12) is connected to the switching hub 11 among the 1st to 15th ports, for example, the first port
- the first port open instruction is sent to make the other port (port 14) open and the other ports (ports 1 to 11, 13, 15, 16) other than the first port closed ( Thereafter, the first IP address set in the first IP device (NDR 22) is transmitted (step S16).
- the switching hub 11 when the switching hub 11 receives the first port open instruction from the setting device 12, the switching hub 11 opens the first port (port 14) and other ports (port 1 to port 1) than the first port. 11, 13, 15, 16) are closed, and when the first IP address is received, the first IP address is transmitted to the first IP device (NDR 22).
- the setting device 12 transmits the first to fifteenth IP addresses set to the first to fifteenth IP devices to the switching hub 11 (steps S11 to S31), and then the first to fifteenth IP addresses.
- An all-port open instruction for opening the ports is transmitted (steps S41 to S45), and then the first device information file to be set in the first IP device is transmitted (step S61).
- FIG. 7 is a display example (during IP address setting) of the setting device according to the embodiment of the present invention. Specifically, this is an example in which the IP address setting state is displayed on the operation display unit 12c of the setting device 12.
- FIG. 8 is a display example (IP address set) of the setting device according to the embodiment of the present invention. Specifically, the state after setting the IP address is displayed on the operation display unit 12c of the setting device 12.
- “Time” indicates the time during the IP address setting or the time when the setting is completed.
- Car ID indicates a vehicle number.
- Device indicates the device name of the IP device 20.
- IP Address indicates an IP address to be set.
- Status indicates a state in the IP address setting process.
- the setting device 12 is setting the IP address “10.24.249.1” as of April 23, 2014 at 16: 9: 13. That is, it is displayed that transmission is in progress (transfer) from the setting device 12. Further, for the IP device D2 (camera 21), the IP address “10.24.249.2” is displayed indicating that the setting device 12 is ready for setting. Setting completion is a state of waiting for transmission after the setting device 12 has generated an IP address.
- the setting device 12 has completed setting the IP address “10.24.249.1” at 16: 9: 58 on April 23, 2014. That is, it is displayed that the transmission from the setting device 12 is completed (Success).
- the setting device 12 has completed setting the IP address “10.24.249.2” at 16:10:47 on April 23, 2014 (Success). Is displayed.
- the operator of the IP address setting can check the progress of the IP address setting process and whether the IP address setting has succeeded or failed. The result can be easily recognized. If the IP address setting of a certain port fails, the IP address setting is attempted again for that port, but at that time, only the progress status and result of the port for which IP address setting has not been completed may be displayed. preferable.
- FIGS. 8 The setting status of the device information file in each IP device (that is, the status in which the device information file is read and executed) is shown in FIGS. 8 may be displayed in the same manner as in FIG. In this case, it is preferable to display the name and number of the device information file in association with the device name of the IP device.
- the setting device 12 opens the first port among the first to nth ports to which the first to nth IP devices 20 are connected to the switching hub 11 and The first IP address to be set in the first IP device 20 after transmitting a first port open instruction for closing the 2nd to nth ports (excluding the port to which the setting device 12 is connected) Therefore, the setting device 12 can set or change the IP address for the plurality of IP devices 20.
- the setting device 12 After setting the IP address for all the IP devices 20 connected to the switching hub 11, the setting device 12 is configured to transmit the device information file of each IP device 20 to the switching hub 11. Therefore, at least one of the entire IP address setting time and the entire device information file setting time can be shortened.
- the setting device 12 Since the setting device 12 is configured to transmit the device information file according to the transmission order of the file transmission order table that determines the transmission order of the device information file, it is possible to reduce the entire device information file setting time. Become. (D) When the time for which the first device information file is set for the first IP device is longer than the time for which the second device information file is set for the second IP device, the setting device 12 Since the second device information file is transmitted after the first device information file is transmitted, the entire device information file setting time can be shortened. (E) Since the setting device 12 is configured to transmit the IP address to the switching hub 11 in accordance with the transmission order of the address transmission order table that determines the transmission order of the IP addresses, the entire IP address setting time can be shortened. Can do.
- the device information file may be transmitted after transmitting the IP address for each port. That is, the setting device 12 sends a port open instruction for opening the first port and closing the other ports, and after sending the IP address corresponding to the first port, The device information file corresponding to the other port is transmitted, and then the port open instruction for making the second port open and the other port closed is transmitted, and the IP address corresponding to the second port After transmitting, the device information file corresponding to the second port may be transmitted.
- all ports are closed and all ports are opened sequentially in the order of port numbers.
- the present invention is not limited to the order of port numbers, and can be configured to be performed in any order. Further, depending on the configuration of the switching hub, it is also possible to perform a configuration in which all ports are closed and all ports are opened at once, rather than sequentially one port at a time.
- the PING confirmation information and the device information file are transmitted from the setting device 12 while all ports are opened, and the port is kept open.
- transmitting the device information file it is possible to configure so that only necessary ports are opened.
- the setting device 12 calculates the setting IP address, and transmits the calculated setting IP address to the IP device 20 via the switching hub 11.
- the setting IP address is specified. It is also possible to configure so that the set IP address is calculated based on the IP address information transmitted from the setting device 12 and received by the switching hub 11 or the IP device 20.
- the factory shipment IP address is rewritten to the set IP address.
- the initial IP address that is the target of the IP address setting is It is not limited to the shipping IP address.
- the present invention can also be applied when there is no initial IP address (when no IP address is set).
- SYMBOLS 1 ... Vehicle, 11 ... Switching hub (SWH), 11a ... SWH control part, 11b ... SWH memory
- SWH Switching hub
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Abstract
Description
少なくとも第1~第(n+1)のポート(nは2以上の整数)を有するスイッチングハブと、前記第1~第nのポートにそれぞれ接続された第1~第nのIP機器と、前記第(n+1)のポートに接続されたIPアドレス設定装置と、を備えるIP通信システムであって、
前記IPアドレス設定装置は、
前記スイッチングハブに対し、前記第1のポートを開いた状態にするとともに前記第2~第nのポートを閉じた状態にする第1のポートオープン指示を送信し、その後、前記第1のIP機器に設定する第1のIPアドレスを送信し、
前記スイッチングハブは、
前記IPアドレス設定装置から、前記第1のポートオープン指示を受信すると、前記第1のポートを開いた状態にするとともに前記第2~第nのポートを閉じた状態にし、前記第1のIPアドレスを受信すると、該第1のIPアドレスを前記第1のIP機器へ送信することを特徴とするIP通信システム。
少なくとも第1~第(n+1)のポート(nは2以上の整数)を有し、前記第1~第nのポートにそれぞれ第1~第nのIP機器が接続されるスイッチングハブと、前記第(n+1)のポートにより接続されるIPアドレス設定装置であって、
前記スイッチングハブに対し、前記第1のポートを開いた状態にするとともに前記第2~第nのポートを閉じた状態にする第1のポートオープン指示を送信し、その後、前記第1のIP機器に設定する第1のIPアドレスを送信することを特徴とするIPアドレス設定装置。
少なくとも第1~第(n+1)のポート(nは2以上の整数)を有するスイッチングハブと、前記第1~第nのポートにそれぞれ接続された第1~第nのIP機器と、前記第(n+1)のポートに接続されたIPアドレス設定装置と、を備えるIP通信システムにおけるIPアドレス設定方法であって、
前記IPアドレス設定装置が、前記スイッチングハブに対し、前記第1のポートを開いた状態にするとともに前記第2~第nのポートを閉じた状態にする第1のポートオープン指示を送信するステップと、
前記IPアドレス設定装置が、前記スイッチングハブに対し、前記第1のIP機器に設定する第1のIPアドレスを送信するステップと、
前記スイッチングハブが、前記IPアドレス設定装置から前記第1のポートオープン指示を受信すると、前記第1のポートを開いた状態にするとともに前記第2~第nのポートを閉じた状態にするステップと、
前記スイッチングハブが、前記IPアドレス設定装置から前記第1のIPアドレスを受信すると、前記第1のIPアドレスを前記第1のIP機器へ送信するステップと、
を備えることを特徴とするIPアドレス設定方法。
図1は、本発明の実施形態に係る列車のIP機器の配置図であり、車両1を上方から見たときの配置図である。IP機器とは、IPアドレスを有し、該IPアドレスを用いて、他のIP機器と通信することのできる機器のことである。図1に示すように、車両1には、複数のIP機器(カメラ21、NDR22、モニタ23、制御装置24)が、スイッチングハブ(SWH:中継装置)11に信号接続されている。なお、図1の例の車両1は列車の先頭車両であるが、列車の中間車両においても、スイッチングハブ11が設置され、そのスイッチングハブ11に複数のIP機器が信号接続される。
図2の例では、設定装置12は、スイッチングハブ11のポート12(P12:ポート番号12のポート)に接続され、各IP機器は、ポート12以外のポートに接続されている。設定装置12をポート12以外のポートに接続できることは、もちろんである。なお、ポート番号nのポートをポートnと呼ぶ。
図3の対応テーブルでは、スイッチングハブ11の各ポートのポート番号1~16に対し、各IP機器20に設定すべきIPアドレスを特定するIPアドレス情報が、それぞれ対応付けられている。例えば、ポート番号1には、IPアドレス情報“1”が対応付けられ、ポート番号16には、IPアドレス情報“21”が対応付けられている。
図4~図6は、それぞれ、本発明の実施形態に係るIPアドレス設定シーケンス図の、その1、その2、その3である。このIPアドレス設定シーケンスにおいて、設定装置12の動作はSU制御部12aにより制御され、スイッチングハブ11の動作はSWH制御部11aにより制御され、IP機器20の動作は機器制御部20aにより制御される。
具体的には、設定装置12は、まず、図3の対応テーブルを用いて、ポート14に接続されたIP機器20の設定IPアドレスを算出し生成する(ステップS11)。図3の例では、ポート14に接続されたIP機器20は、ネットワークデジタルレコーダ22であり、対応テーブルのIPアドレス情報(第4オクテット)は、“15”である。したがって、ネットワークデジタルレコーダ22の設定IPアドレスは、“10.42.249.15”と算出される。
具体的には、設定装置12は、まず、対応テーブルを用いて、ポート1に接続されたIP機器20の設定IPアドレスを算出する(ステップS21)。
設定装置12は、まず、ポート番号1のポート(ポート1)に対するポートオープン指示を、スイッチングハブ11へ送信する(ステップS41)。スイッチングハブ11では、ポート1のポートオープン指示を受信すると、ポート1のポートオープン処理を行う(ステップS42)。
(a)設定装置12が、スイッチングハブ11に対し、第1~第nのIP機器20がそれぞれ接続された第1~第nのポートのうち、第1のポートを開いた状態にするとともに第2~第nのポート(設定装置12が接続されたポートを除く)を閉じた状態にする第1のポートオープン指示を送信し、その後、第1のIP機器20に設定する第1のIPアドレスを送信するよう構成したので、設定装置12から複数のIP機器20に対し、IPアドレスを設定又は変更することができる。
(b)スイッチングハブ11に接続された全てのIP機器20に対してIPアドレスを設定した後、設定装置12が、スイッチングハブ11に対し、各IP機器20の機器情報ファイルを送信するよう構成したので、全体のIPアドレス設定時間又は全体の機器情報ファイル設定時間のうち少なくとも一方を短縮することができる。
(c)設定装置12が、機器情報ファイルの送信順序を定めるファイル送信順序テーブルの送信順序に従い、機器情報ファイルを送信するよう構成したので、全体の機器情報ファイル設定時間を短縮することが可能となる。
(d)第1の機器情報ファイルが第1のIP機器に設定される時間が、第2の機器情報ファイルが第2のIP機器に設定される時間よりも長い場合、設定装置12が、第1の機器情報ファイルを送信した後に第2の機器情報ファイルを送信するよう構成したので、全体の機器情報ファイル設定時間を短縮することが可能となる。
(e)設定装置12が、IPアドレスの送信順序を定めるアドレス送信順序テーブルの送信順序に従い、スイッチングハブ11に対し、IPアドレスを送信するよう構成したので、全体のIPアドレス設定時間を短縮することができる。
(f)設定装置12が、スイッチングハブ11に対し、ポートオープン指示を送信した後、IP機器20に対する確認情報を送信し、スイッチングハブ11から、前記確認情報に対する応答情報を適正に受信した場合に、IPアドレスを送信するよう構成したので、適正なIP機器20に対してIPアドレスを設定することを確実に行える。
(g)設定装置12が、IP機器の初期IPアドレスを記憶し、その初期IPアドレスと応答情報に含まれる送信元IPアドレスとが一致する場合に、IPアドレスを送信するよう構成したので、IPアドレス設定対象のIP機器20が適正であるか否かを容易に確認することができる。
(h)設定装置12が、スイッチングハブ11に対し、機器情報ファイルを送信する前に、IP機器20に対する確認情報を送信し、スイッチングハブ11から、前記確認情報に対する応答情報を適正に受信した場合に、機器情報ファイルを送信するよう構成したので、適正なIP機器20に対して機器情報ファイルを設定することを確実に行える。
Claims (9)
- 少なくとも第1~第(n+1)のポート(nは2以上の整数)を有するスイッチングハブと、前記第1~第nのポートにそれぞれ接続された第1~第nのIP機器と、前記第(n+1)のポートに接続されたIPアドレス設定装置と、を備えるIP通信システムであって、
前記IPアドレス設定装置は、
前記スイッチングハブに対し、前記第1のポートを開いた状態にするとともに前記第2~第nのポートを閉じた状態にする第1のポートオープン指示を送信し、その後、前記第1のIP機器に設定する第1のIPアドレスを送信し、
前記スイッチングハブは、
前記IPアドレス設定装置から、前記第1のポートオープン指示を受信すると、前記第1のポートを開いた状態にするとともに前記第2~第nのポートを閉じた状態にし、前記第1のIPアドレスを受信すると、該第1のIPアドレスを前記第1のIP機器へ送信することを特徴とするIP通信システム。 - 請求項1に記載のIP通信システムであって、
前記IPアドレス設定装置は、
前記スイッチングハブに対し、前記第1のIPアドレスを送信した後、前記第2のポートを開いた状態にするとともに前記第2のポート以外の前記第1~第nのポートを閉じた状態にする第2のポートオープン指示を送信し、その後、前記第2のIP機器に設定する第2のIPアドレスを送信し、
前記スイッチングハブは、
前記IPアドレス設定装置から、前記第2のポートオープン指示を受信すると、前記第2のポートを開いた状態にするとともに前記第2のポート以外の前記第1~第nのポートを閉じた状態にし、前記第2のIPアドレスを受信すると、該第2のIPアドレスを前記第2のIP機器へ送信することを特徴とするIP通信システム。 - 請求項2に記載のIP通信システムであって、
前記IPアドレス設定装置は、前記第1及び第2のIPアドレスの送信順序を定めるアドレス送信順序テーブルを有し、前記アドレス送信順序テーブルの送信順序に従い、前記スイッチングハブに対し、前記第1のIPアドレスを送信し、その後、前記第2のIPアドレスを送信することを特徴とするIP通信システム。 - 請求項1に記載のIP通信システムであって、
前記IPアドレス設定装置は、
前記第1のIP機器の初期IPアドレスを記憶し、
前記第1のポートオープン指示を送信した後、前記スイッチングハブを介して前記第1のIP機器へ、前記第1のIP機器に対する第1の確認情報を送信し、その後、前記スイッチングハブを介して前記第1のIP機器から、前記第1の確認情報に対する第1の応答情報を受信し、前記初期IPアドレスと、前記第1の応答情報に含まれる送信元IPアドレスとが一致する場合に、前記第1のIPアドレスを送信することを特徴とするIP通信システム。 - 請求項1に記載のIP通信システムであって、
前記IPアドレス設定装置は、
前記第1のポートと、前記第1のIPアドレスを特定するための第1のIPアドレス情報とを対応付けて記憶しており、
前記第1のIPアドレス情報に基づき前記第1のIPアドレスを生成し、該生成した第1のIPアドレスを送信することを特徴とするIP通信システム。 - 請求項1に記載のIP通信システムであって、
前記IPアドレス設定装置は、
前記スイッチングハブに対し、前記第1~第nのIP機器にそれぞれ設定する第1~第nのIPアドレスを送信した後、前記第1~第nのポートを開いた状態にする全ポートオープン指示を送信し、その後、前記第1のIP機器に設定する第1の機器情報ファイルを送信し、その後、前記第2のIP機器に設定する第2の機器情報ファイルを送信し、
前記スイッチングハブは、
前記IPアドレス設定装置から、前記全ポートオープン指示を受信すると、前記第1~第nのポートを開いた状態にし、その後、前記第1の機器情報ファイルを受信すると、前記第1の機器情報ファイルを前記第1のIP機器へ送信し、前記第2の機器情報ファイルを受信すると、前記第2の機器情報ファイルを前記第2のIP機器へ送信することを特徴とするIP通信システム。 - 請求項6に記載のIP通信システムであって、
前記IPアドレス設定装置は、前記第1~第nのIP機器に設定する機器情報ファイルのうち、前記第1及び第2の機器情報ファイルの送信順序を定めるファイル送信順序テーブルを有し、前記ファイル送信順序テーブルの送信順序に従い、前記第1及び第2の機器情報ファイルを送信し、
前記ファイル送信順序テーブルは、
前記第1の機器情報ファイルが前記第1のIP機器に設定される時間が、前記第2の機器情報ファイルが前記第2のIP機器に設定される時間よりも長い場合、前記第1の機器情報ファイルを送信した後に前記第2の機器情報ファイルを送信するよう前記送信順序を定めることを特徴とするIP通信システム。 - 少なくとも第1~第(n+1)のポート(nは2以上の整数)を有し、前記第1~第nのポートにそれぞれ第1~第nのIP機器が接続されるスイッチングハブと、前記第(n+1)のポートにより接続されるIPアドレス設定装置であって、
前記スイッチングハブに対し、前記第1のポートを開いた状態にするとともに前記第2~第nのポートを閉じた状態にする第1のポートオープン指示を送信し、その後、前記第1のIP機器に設定する第1のIPアドレスを送信することを特徴とするIPアドレス設定装置。 - 少なくとも第1~第(n+1)のポート(nは2以上の整数)を有するスイッチングハブと、前記第1~第nのポートにそれぞれ接続された第1~第nのIP機器と、前記第(n+1)のポートに接続されたIPアドレス設定装置と、を備えるIP通信システムにおけるIPアドレス設定方法であって、
前記IPアドレス設定装置が、前記スイッチングハブに対し、前記第1のポートを開いた状態にするとともに前記第2~第nのポートを閉じた状態にする第1のポートオープン指示を送信するステップと、
前記IPアドレス設定装置が、前記スイッチングハブに対し、前記第1のIP機器に設定する第1のIPアドレスを送信するステップと、
前記スイッチングハブが、前記IPアドレス設定装置から前記第1のポートオープン指示を受信すると、前記第1のポートを開いた状態にするとともに前記第2~第nのポートを閉じた状態にするステップと、
前記スイッチングハブが、前記IPアドレス設定装置から前記第1のIPアドレスを受信すると、前記第1のIPアドレスを前記第1のIP機器へ送信するステップと、
を備えることを特徴とするIPアドレス設定方法。
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