Analysis system and analysis server

• US 8,489,703 B2
• Filed: 01/22/2009
• Issued: 07/16/2013
• Est. Priority Date: 02/01/2008
• Status: Active Grant

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Sato, Nobuo, Tsuji, Satomi, Yano, Kazuo, Moriwaki, Norihiko, Ohkubo, Norio, Wakisaka, Yoshihiro
• Primary Examiner(s): ZHANG, SHIRLEY X
• Application Number:
  US12/320,245
• Publication Number:
  US 20090198475A1
• Time in Patent Office: 1,636 Days
• Field of Search: 709217-219, 709/246, 600/300
• US Class Current: 709/217
• 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, the analysis system comprising:

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

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

wherein the sensor node performs an association with the base station, receives time data from the base station upon associating with the base station, sets a clock within the sensor node based on the time data to time synchronize with the base station, and adds a time stamp to each sensor data,

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,

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

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 the sensor data in response to an event input using the event input as a trigger,

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, and

wherein the event trigger type analysis processes and outputs an analysis result obtained by the time trigger.

2. The analysis system according to claim 1, wherein the base station has a send/receive unit, a memory unit, and a 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 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.

5. 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.

6. 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.

7. An analysis system for analyzing sensor data, the analysis system comprising:

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

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

wherein the sensor node performs an association with the base station, receives time data from the base station upon associating with the base station, sets a clock within the sensor node based on the time data to time synchronize with the base station, and adds a time stamp to each sensor data,

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, and

wherein the event trigger type analysis processes and outputs an analysis result obtained by the time trigger.

8. The analysis system according to claim 7, 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.

9. The analysis system according to claim 7, 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.

10. The analysis system according to claim 7, wherein the server performs the analysis on the sensor data that was rearranged in the chronological order of sensing in the event trigger type analysis as the object.

11. The analysis system according to claim 7, 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.

12. An analysis server that is connected with a sensor node and a base station via a network, the sensor ode being connected with the base station via the network, the analysis server comprising:

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, each sensor data including a time stamp added by the sensor node based on a clock within the sensor node that is time synchronized with the base station by way of the sensor node setting the clock according to time data that is received by the sensor node from the base station upon the sensor node performing an association with the base station,

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 an analysis related to the sensor data using the sensor data that was rearranged in the chronological order of sensing,

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 the sensor data in response to an event input using the event input as a trigger,

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

wherein the event trigger type analysis processes and outputs an analysis result obtained by the time trigger.

13. The analysis server according to claim 12, 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.

14. The analysis server according to claim 12, 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.

15. The analysis server according to claim 12, 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.

16. The analysis server according to claim 12, 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.

17. The analysis server according to claim 12, 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.

18. The analysis server according to claim 12, 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.