JP2007096780A - Information transmitter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simplified information transmitter which is applied to a monitor system. <P>SOLUTION: This information transmitter is provided with: a processing part 210x equipped with interfaces 210xa4 to 210xd4 of information A to D; an LAN controller 210x1; a memory 210x3; and a central processing unit 210x2. The processing part is connected to an LAN 3, and an MAC address is assigned to the controller, and each IP address of information is stored in the memory. In order to acquire certain specific information A for a certain specific monitor object 21, when a packet to which the MAC address of a specific monitor object 21 and the IP address of the information are added, is transmitted from a master station 1, the controller checks the MAC address, and when it is judged that the packet is necessary, the central processing unit checks the IP address, and judges the IP address of the information, and when it is judged that those IP addresses are identical, the central processing unit makes the controller input a signal obtained by converting the specific information through each interface corresponding to the specific information, and transmit the packet to which the signal is added to the master station. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is provided between a slave station that is provided for each of a plurality of monitoring targets and collects and transmits a plurality of monitoring information in the monitoring target, and a parent station that can monitor monitoring information collectively or centrally outside the monitoring target. A master station is connected to a LAN constructed between a plurality of monitoring targets and connected via the LAN, or a LAN constructed between a plurality of monitoring targets is connected to the Internet, and the master station is connected to the Internet and the Internet and the LAN. The present invention relates to an information transmission apparatus of a slave station that transmits monitoring information via a network.

  A relatively large-scale building such as a factory or building to be monitored has an electrical room that houses a switch and a power distribution transformer. Power is supplied to each load such as an electric lamp. As the monitoring information, for example, when the owner or manager of this building monitors the amount of power used for each load, the watt hour meter provided corresponding to each load is often concentrated in one place. In this case, collective or concentrated monitoring information is monitored in, for example, an electric room.

  Further, there is a case where it is necessary to monitor the collective or concentrated monitoring information as described above for a plurality of buildings further collectively or in a concentrated manner. In this case, a LAN constructed between the buildings is used as a data transmission path for monitoring information. A monitoring system for transmitting monitoring information via such a LAN is disclosed in Patent Document 1, for example.

  FIG. 2 is a schematic configuration diagram showing a conventional general monitoring system. FIG. 3 is a block diagram showing an information transmission apparatus applied to the monitoring system of FIG.

  As shown in the figure, the monitoring system includes a master station (central control device) 1 and slave station information transmission devices 210 ′, 220 ′, 230 ′,. And the LAN 3, and the information transmission devices 210 ′, 220 ′, 230 ′,... Of the master station 1 and each slave station are constructed between the monitoring targets 21, 22, 23,. Are connected to each.

  As for the monitoring information, all of the monitoring targets 21, 22, 23,... Include, for example, integrated power amount information, switch opening / closing information, pulse power amount information, and telemeter information such as instantaneous current, instantaneous voltage, and instantaneous power value. It is said.

  For example, the slave station information transmission device 210 ′ provided in the monitoring target 21 collects monitoring information of the integrated power amount information A, switch opening / closing information B, pulse power amount information C, and telemeter information D in the monitoring target 21. In order to transmit, each monitoring information includes a monitoring information A processing unit 210a ′, a monitoring information B processing unit 210b ′, a monitoring information C processing unit 210c ′, and a monitoring information D processing unit 210d ′. .

  The monitoring information A, B, C, and D are outputs from sensors, transducers, etc. (not shown) provided in the monitoring target 21.

  The monitoring information A processing unit 210a ′ includes a LAN controller 210a1 ′, a central processing unit (CPU) 210a2 ′, a memory 210a3 ′, and an information A interface 210a4 ′ corresponding to the monitoring information A. The unit 210b ′ includes a LAN controller 210b1 ′, a central processing unit (CPU) 210b2 ′, a memory 210b3 ′, and an information B interface 210b4 ′ corresponding to the monitoring information B. The monitoring information C processing unit 210c ′ A LAN controller 210c1 ′, a central processing unit (CPU) 210c2 ′, a memory 210c3 ′, and an information C interface 210c4 ′ corresponding to the monitoring information C. The monitoring information D processing unit 210d ′ includes a LAN controller 210d1. 'And a central processing unit (CPU) 210d2 When, a memory 210d3 a 'and the information D interface 210d4 corresponding to the monitoring information D'.

  The LAN controller 210a1 ′, the LAN controller 210b1 ′, the LAN controller 210c1 ′, and the LAN controller 210d1 ′ are connected to the LAN3.

  The LAN controller 210a1 ′, the LAN controller 210b1 ′, the LAN controller 210c1 ′, and the LAN controller 210d1 ′ are assigned with unique MAC addresses in hardware.

  The memory 210a3 ′, the memory 210b3 ′, the memory 210c3 ′, and the memory 210d3 ′ each store IP addresses corresponding to the monitoring information A, B, C, and D assigned in software.

  The information A interface 210a4 'converts the monitoring information A into a signal and outputs the signal, and the information B interface 210b4' converts the monitoring information B into a signal and outputs the signal. The information C interface 210c4 ′ converts the monitoring information C into a signal and outputs the signal, and the information D interface 210d4 ′ converts the monitoring information D into a signal and outputs the signal.

  In such a configuration, in order to acquire a specific monitoring information A for a specific monitoring target 21, the MAC address assigned to the LAN controller 210a1 'of the specific monitoring target 21 and the specific monitoring information 21 When a packet to which at least the IP address assigned to the information A is added is transmitted from the master station (central control unit) 1, the packet is transmitted to the LAN 3, so that all the monitoring targets 21, 22, 23,. It is determined whether the packet is necessary or unnecessary.

  In the monitoring target 21 that has received the packet via the LAN 3, the monitoring information A processing unit 210a ′, the monitoring information B processing unit 210b ′, the monitoring information C processing unit 210c ′, and the monitoring information that constitute the slave station information transmission device 210 ′. Each LAN controller 210a1 ′, LAN controller 210b1 ′, LAN controller 210c1 ′, and LAN controller 210d1 ′ of the D processing unit 210d ′ checks the MAC address in the packet. As a result, since the MAC address corresponds to the own MAC address of the LAN controller 210a1 ′, the LAN controller 210a1 ′ determines that the packet is necessary. The other LAN controllers 210b1 ′, 210c1 ′, and 210d1 ′ determine that the packet is unnecessary because the MAC addresses in the packets do not correspond to these LAN controllers.

When the LAN controller 210a1 'determines that the packet is necessary, the central processing unit (CPU) 210a2' checks the IP address in the packet. As a result, since the IP address corresponds to the IP address assigned to the monitoring information A, the central processing unit (CPU) 210a2 'outputs a signal obtained by converting the monitoring information A via the information A interface 210a3'. The packet is added to the LAN controller 210 a 1 ′, and the packet with the signal added is transmitted to the master station (central control unit) 1.
JP 2001-83193 A (FIG. 1)

  Conventionally, since a monitoring information processing unit is required for each piece of monitoring information, there arises a problem that the cost of the information transmission apparatus of the slave station increases. In addition, because it is designed without considering the increase in monitoring information, if a change to increase monitoring information from the owner or administrator to be monitored is required for an existing information transmission device, Corresponding monitoring information processing units are required, but there is a problem that remodeling is not easy, and there is a problem that the cost of the information transmission apparatus of the slave station increases with the increase in monitoring information.

  An object of the present invention is to provide a simplified information transmission apparatus applied to a monitoring system.

  The invention according to claim 1 is a slave station that is provided in each of a plurality of monitoring targets and collects and transmits a plurality of monitoring information in the monitoring targets, and a master station that can monitor monitoring information collectively or centrally outside the monitoring targets The main station is connected to a LAN built between multiple monitoring targets and connected via the LAN, or the LAN built between multiple monitoring targets is connected to the Internet, and the parent station connects to the Internet. Targeted at a slave station information transmission device that transmits monitoring information via the Internet and a LAN, each interface corresponding to a plurality of monitoring information, one LAN controller, a memory, and one central processing unit are provided. The monitoring information processing unit is connected to the LAN, and a unique MAC address is assigned to the LAN controller, and the memory IP addresses corresponding to a plurality of monitoring information are respectively stored, and in order to acquire certain monitoring information for a certain monitoring target, the MAC address assigned to the specific monitoring target LAN controller and the identification When a packet with at least the IP address assigned to the monitoring information is transmitted from the master station, the LAN controller checks the MAC address in the packet to determine whether the packet is necessary or unnecessary. If the central processing unit determines that the packet is important, the central processing unit checks the IP address in the packet to determine whether it is the same as or different from the IP address assigned to each of the plurality of monitoring information. A signal obtained by converting the specific monitoring information via the interface corresponding to the specific monitoring information is sent to the LAN controller. Is inputted to the roller is obtained by the packet added signals so as to transmit to the master station.

  As described above, according to the invention described in claim 1, it is sufficient to prepare one LAN controller, a memory, and one central processing unit (CPU) even if the number of pieces of monitoring information is large. Since only the interface corresponding to each monitoring information needs to be prepared, the cost can be reduced. In addition, when a change to increase the monitoring information from the owner or manager of the monitoring target is requested, the modification to add the monitoring information processing unit can be eliminated, and the cost for the increase in the monitoring information can be reduced. Can do.

  FIG. 1 is a block diagram showing an embodiment of an information transmission apparatus according to the present invention, which is applied to a conventional general monitoring system. As shown in the figure, for example, the information transmission device 210 of the slave station provided in the monitoring target 21 includes the accumulated power amount information A, the switch opening / closing information B, the pulse power amount information C, and the telemeter information D in the monitoring target 21. The monitoring information processing unit 210x is configured to collect and transmit monitoring information. Since there is one monitoring information processing unit, the information transmission apparatus 210 is the same as the monitoring information processing unit 210x.

  The monitoring information processing unit 210x includes a LAN controller 210x1, a central processing unit (CPU) 210x2, a memory 210x3, an information A interface 210xa4 and an information B interface 210xb4 respectively corresponding to the monitoring information A, B, C, and D. And an information C interface 210xc4 and an information D interface 210xd4. The LAN controller 210x1 and the central processing unit (CPU) 210x2 are configured from one, and the memory 210x3 is configured from one, for example.

  The LAN controller 210x1 is connected to the LAN 3, and a unique MAC address is assigned to the LAN controller 210x1 in hardware.

  The memory 210x3 stores IP addresses corresponding to the monitoring information A, B, C, and D assigned in software.

  The information A interface 210xa4 converts the monitoring information A into a signal and outputs the signal. The information B interface 210xb4 converts the monitoring information B into a signal and outputs the signal. The information C interface 210xc4 The monitoring information C is converted into a signal and the signal is output, and the information D interface 210xd4 converts the monitoring information D into a signal and outputs the signal.

  In such a configuration, in order to acquire certain monitoring information A for a certain monitoring target 21, the MAC address assigned to the LAN controller 210x1 of the specific monitoring target 21 and the specific monitoring information When a packet to which at least the IP address assigned to A is added is transmitted from the master station (central control unit) 1, the packet is transmitted to the LAN 3, so that all the monitoring targets 21, 22, 23,. It will be judged whether the packet is necessary or unnecessary.

  In the monitoring target 21 that has received the packet via the LAN 3, the MAC address in the packet is checked by the LAN controller 210x1 of the monitoring information processing unit 210x that constitutes the information transmission apparatus 210 of the slave station. As a result, since the MAC address corresponds to the own MAC address of the LAN controller 210x1, the LAN controller 210x1 determines that the packet is necessary.

  When the LAN controller 210x1 determines that the packet is necessary, the central processing unit (CPU) 210a2 checks the IP address in the packet and is the same as or different from the IP address corresponding to the monitoring information A, B, C, D. Are determined to be the same. As a result, since the IP address corresponds to the IP address assigned to the monitoring information A, the central processing unit (CPU) 210x2 sends a signal obtained by converting the monitoring information A via the information A interface 210x3 to the LAN controller 210x1. The packet with the signal added is transmitted to the master station (central control unit) 1.

  The information transmission apparatus of the present invention can be applied to general monitoring systems regardless of the above monitoring information.

  In this embodiment, between a slave station and a master station provided for each of a plurality of monitoring targets, the master station is connected to a LAN constructed between the plurality of monitoring targets, and monitoring information is transmitted via the LAN. However, a LAN constructed between a plurality of monitoring targets may be connected to the Internet, a master station may be connected to the Internet, and monitoring information may be transmitted via the Internet and the LAN.

  In the present embodiment, the monitoring information A, B, C, and D is one, but a plurality of pieces of information such as A1, A2, ..., B1, B2, ..., C1, C2, ... D1, D2, ... are provided. The monitoring information can be monitored.

It is a block diagram which shows one Embodiment of the information transmission apparatus which concerns on this invention applied to the conventional general monitoring system. It is a schematic block diagram which shows the conventional general monitoring system. It is a block diagram which shows the information transmission apparatus applied to the monitoring system of FIG.

Explanation of symbols

1 Master station (central control unit)
3 LAN
21, 22, 23 Monitoring target 210 Information transmission device 210x Monitoring information processing unit 210x1 LAN controller 210x2 Central processing unit (CPU)
210x3 Memory 210xa4 Information A Interface 210xb4 Information B Interface 210xc4 Information C Interface 210xd4 Information D Interface

Claims (1)

Between the slave station that is provided in each of a plurality of monitoring targets and collects and transmits a plurality of monitoring information in the monitoring target, and the parent station that can monitor the monitoring information collectively or centrally outside the monitoring target, The master station is connected to a LAN constructed between a plurality of monitoring targets, and the LAN constructed between the plurality of monitoring targets is connected to the Internet via the LAN, and the master station is connected to the Internet. In the information transmission apparatus of the slave station that transmits the monitoring information via the Internet and the LAN,
Each monitoring information processing unit including each interface corresponding to the plurality of monitoring information, one LAN controller, a memory, and one central processing unit,
The monitoring information processing unit is connected to the LAN;
The LAN controller is assigned a unique MAC address,
In the memory, IP addresses corresponding to the plurality of monitoring information are respectively stored.
The MAC address assigned to the LAN controller of the specific monitoring target and the IP address assigned to the specific monitoring information in order to acquire the specific monitoring information for the specific monitoring target Is transmitted from the master station, the LAN controller checks the MAC address in the packet to determine whether the packet is required or not, and the packet is required. The central processing unit checks the IP address in the packet to determine whether it is the same as or different from the IP address assigned to each of the plurality of monitoring information. A signal obtained by converting the specific monitoring information via the interface corresponding to the specific monitoring information. Serial LAN controller is inputted, the information transmission device a packet added with the signal so as to be transmitted to the master station.

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