Measurement system, management device and processing distribution method using the same

• US 20070182584A1
• Filed: 11/20/2006
• Published: 08/09/2007
• Est. Priority Date: 11/30/2005
• Status: Active Grant

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Ogino, Atsushi
• Granted Patent: US 7,941,485 B2
• Time in Patent Office: Days
• US Class Current: 340/870.210
• CPC Class Codes: H04Q 9/00 Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom

Abstract

In a measurement system that comprises plural measurement devices classified by groups, and plural data processing devices on a network that receives and processes measured data from the measurement devices, the data processing devices are smoothly allocated. The measurement devices belong to groups based on the areas in which they are located, and respectively transmit measured data to a multicast address defined for each of the groups to which they belong. A management device detects an overloaded or failed data processing device, stops data processing on a multicast address at which the data processing device receives data, alternatively commands another less loaded data processing device to join the multicast group, receive measured data transmitted to the multicast address, and process the data.

Claims

1. A measurement system comprising a plurality of measurement devices connected over a network, and a plurality of data processing devices that receive data measured by the measurement devices and perform data processing,

wherein each of the measurement devices belongs to any one of a plurality of groups, and transmits the measured data to a multicast address defined for each of the groups, and

wherein, the groups in which the data processing devices are to join are decided based on the respective operating statuses of the data processing devices, and the data processing devices receive the measured data multi-cast to an address defined for each of the groups, and perform data processing based on the measured data.

2. The measurement system according to claim 1,

wherein the plurality of measurement devices are classified into groups, based on the disposition positions of the respective measurement devices.

3. The measurement system according to claim 1,

wherein each of the plurality of groups has priority on the data processing.

4. The measurement system according to claim 3,

wherein the priority is decided based on the result of the data processing.

5. The measurement system according to claim 1,

wherein at least one of the measurement devices belongs to the plurality of groups, and transmits measured data to a plurality of multicast addresses defined for each of the groups.

6. The measurement system according to claim 1,

wherein a measurement target area of the measurement system comprises a plurality of areas,

wherein the measurement devices are classified into groups, based on the disposition positions of the measurement devices in each of the areas,

wherein at least one terminal can move within the plurality of split areas,

wherein the measurement devices of the groups corresponding to the areas perform measurement on the terminals existing in the areas, and

wherein the data processing devices joined in the groups receive the measurement data, and perform data processing.

7. The measurement system according to claim 6,

wherein the one data processing device joins the plurality of groups, receives the measured data measured in the plurality of areas, and performs the data processing.

8. The measurement system according to claim 1, comprising a management device that decides the groups in which the data processing devices are to join, based on the join status of the data processing devices to the groups and load amounts of processing on the groups in which they are joined.

9. A management device in a measurement system comprising a plurality of measurement devices connected over a network, and a plurality of data processing devices that receive data measured by the measurement devices and perform data processing,

wherein the measurement device includes a data processing device information storage part, and a processing allocation part,

wherein the data processing device information storage part, with respect to the measurement devices respectively belonging to specific groups, holds information about multicast addresses each assigned to each of the groups, and

wherein the processing allocation part respectively decides the group in which the data processing devices are to join, and commands the data processing devices to receive measured data multi-cast to the addresses defined for the groups and process the measured data.

10. The management device in a measurement system according to claim 9,

wherein the data processing device information storage part stores the respective operating statuses of the data processing devices, and information about groups of the join destinations, and

wherein the processing allocation part decides the groups in which the data processing devices are to join, based on the join status of the data processing devices to the groups and load amounts of processing on the groups in which they are joined.

11. The management device in a measurement system according to claim 9,

wherein the data processing device information storage part stores the respective operating statuses of each of the data processing devices, and information about groups of each of the join destinations, and

wherein the processing allocation part allocates the plurality of groups according to priority of the data processing.

12. The management device in a measurement system according to claim 11,

wherein the processing allocation part decides each of the priorities, based on the data processing result.

13. A processing distribution method in a measurement system comprising a plurality of measurement devices connected over a network, and a plurality of data processing devices that receive data measured by the measurement devices and perform data processing,

wherein the plurality of measurement devices belong to groups respectively, and transmit the measured data to a multicast address defined for each of the groups,

wherein the groups in which each of the data processing devices is to join are decided so that processing loads are smoothed among the plurality of operable data processing devices, and

wherein the plurality of data processing devices respectively receive measured data multi-cast to the address defined for each of the groups, and processes the measured data.

14. The processing distribution method according to claim 13,

wherein the plurality of measurement devices are classified by groups, based on the disposition positions of each of the measurement devices.

15. The processing distribution method according to claim 13,

wherein the plurality of groups have priorities on the data processing.

16. The processing distribution method according to claim 15,

wherein each of the priorities is decided based on the data processing result.