Analysis system and analysis server

• US 20090198475A1
• Filed: 01/22/2009
• Published: 08/06/2009
• Est. Priority Date: 02/01/2008
• Status: Active Grant

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Wakisaka, Yoshihiro, Moriwaki, Norihiko, Yano, Kazuo, Sato, Nobuo, Tsuji, Satomi, Ohkubo, Norio
• Granted Patent: US 8,489,703 B2
• Time in Patent Office: Days
• US Class Current: 702/188
• CPC Class Codes: G01D 21/00 Measuring or testing not otherwise provided for
• CPC Class Codes: G06Q 10/10 Office automation; Time management

Abstract

An analysis sever capable of performing analysis among a large amount of sensor data in order to obtain an analysis result that a reader desires and outputting the result instantaneously. The analysis server rearranges the sensor data acquired from a sensor node into time series data. The analysis is performed separately for time trigger analysis (D) and for event trigger analysis (F) depending on analysis contents. In the time trigger analysis (D), analysis processing that is basically needed when visualizing a state of an organization is performed. In the event trigger analysis (F), an analysis result obtained by the time trigger analysis (D) is processed using the reader'"'"'s desired information and is outputted.

Claims

1. An analysis system that analyzes sensor data sensed by a sensor node using the sensor node and a server mutually connected via a network,

wherein the sensor node and the server have each a send/receive unit, a memory unit, and a control unit,

wherein the memory unit of the server stores the sensor data received via the network,

wherein the control unit of the server rearranges the sensor data in the chronological order when the sensor data that arrived later has an earlier order of being sensed than the sensor data that arrived earlier so that the sensor data sensed earlier may take an earlier order than the sensor data sensed later, and stores it into the memory unit, and

wherein the server performs analysis related to the sensor data using the sensor data that was rearranged in the chronological order of sensing and outputs a performed result.

2. The analysis system according to claim 1, further comprising:

a base station connected with the sensor node and the server via the network,

wherein the base station has the send/receive unit, the memory unit, and the control unit,

wherein the sensor node, when being in a possible range of wireless communication, transmits the sensor data to the base station via the send/receive unit, and when not being in the possible range of wireless communication, stores the sensor data in the memory unit of the sensor node, and

wherein the server receives the sensor data via the base station.

3. The analysis system according to claim 1,

wherein, when rearranging the sensor data in the chronological order of the sensing, the control unit of the server specifies a range of the sensor data that is considered as an object of the rearranging with respect to the sensor data before being rearranged.

4. The analysis system according to claim 1,

wherein the analysis comprises by including time trigger analysis of analyzing the sensor data at every predetermined time and event trigger type analysis of analyzing it in response to an event input using the event input as a trigger, and

wherein the control unit of the server switches between the time trigger analysis and the event trigger type analysis according to input conditions inputted into the server.

5. The analysis system according to claim 1,

wherein the control unit of the server finds tendency of a place that is being sensed by the sensor node by analyzing the sensor data using an index.

6. The analysis system according to claim 1,

wherein the control unit of the server corrects a center position of the amplitude of the sensor data using a low pass filter.

7. The analysis system according to claim 1,

wherein the server calculates a histogram of the sensor data as a feature quantity indicating tendency of the sensor data in a predetermined time.

8. An analysis system for analyzing sensor data sensed by a sensor node using the sensor node and a server that are mutually connected via a network,

wherein the sensor node and the server have each a send/receive unit, a memory unit, and a control unit, and

wherein the server selectively performs at least either of event trigger type analysis of performing the analysis in response to an event input using the event input as a trigger or time trigger analysis of performing the analysis at every predetermined time on the sensor data received via the network depending according to input conditions.

9. The analysis system according to claim 8, further comprising a base station connected with the sensor node and the server via the network,

wherein the base station has a send/receive unit, a memory unit, and a control unit,

wherein the sensor node transmits the acquired sensor data to the base station when the base station is located in a range in which wireless communication is possible, and stores the sensor data that was acquired for the base station into the memory unit of the sensor node when the base station is not located in the range in which wireless communication is possible, and

wherein the server receives the sensor data via the base station.

10. The analysis system according to claim 8,

wherein the control unit of the server changes the order of the sensor data arrived earlier and the sensor data arrived later, so that the sensor data is rearranged in the chronological order of sensing in the time trigger analysis.

11. The analysis system according to claim 8,

wherein the server performs the analysis on the sensor data that was rearranged in the chronological order of sensing in the even trigger type analysis as the object.

12. The analysis system according to claim 8,

wherein the control unit of the server, when rearranging the sensor data in the chronological order of sensing, specifies a range of the sensor data that is considered as an object of the rearranging with respect to the sensor data before being rearranged.

13. The analysis server that is connected with a sensor node via a network and is constructed by having a send/receive unit, a memory unit, and a control unit,

wherein the memory unit is configured to store the sensor data received via the network,

wherein the control unit is configured to, when the sensor data that arrived later has an earlier order of being sensed than the sensor data that arrived later, rearrange the sensor data in the chronological order so that the sensor data sensed earlier may take an earlier order than the sensor data sensed later, and to store it into the memory unit, and

wherein the analysis server thus performs the analysis related to the sensor data using the sensor data that was rearranged in the chronological order of sensing.

14. The analysis system according to claim 13,

wherein, when rearranging the sensor data in the chronological order of the sensing, the control unit specifies a range of the sensor data that is considered as the object of the rearranging with respect to the sensor data before being rearranged.

15. The analysis server according to claim 13,

wherein the analysis is formed by including time trigger analysis and event trigger type analysis, and

wherein the control unit switches between the time trigger analysis and the event trigger type analysis according to input conditions inputted into the analysis server.

16. The analysis server according to claim 13,

wherein the control unit finds tendency of a place that is being sensed by the sensor node by analyzing the sensor data using an index.

17. The analysis server according to claim 13,

wherein the control unit calculates a histogram of the sensor data as a feature quantity indicating tendency of the sensor data in a predetermined time.

18. The analysis server according to claim 13,

wherein the sensor node comprise a plurality of unit sensor nodes, and

wherein the analysis server receives the sensor data transmitted from the plurality of unit sensor nodes in arrival order, rearranges the sensor data that was aligned in arrival order into a time series sequence of the sensing in the whole of the plurality of unit sensor nodes, and performs the analysis on the sensor data that is rearranged as the object.

19. The analysis server according to claim 13,

wherein the sensor node comprise a single unit sensor node, and

wherein the analysis server receives the sensor data transmitted from the single unit sensor node, rearranges the sensor data that was aligned in arrival order into a time series sequence of the sensing in the single unit sensor node, and performs the analysis on the sensor data that was rearranged as the object.

20. The analysis server according to claim 13,

wherein the analysis server is configured to store a result obtained by performing the analysis into the memory unit as a plurality of analysis result tables, and

wherein the plurality of analysis result tables are stored being aligned in the chronological order that corresponds to a time series of the sensing of the sensor data related to the analysis.