SENSOR NODE, CONTROLLER NODE, SENSOR NETWORK SYSTEM, AND OPERATION METHOD THEREFOR

PROBLEM TO BE SOLVED: To provide a sensor network system which easily and accurately performs abnormality determination with respect to a time-series event with an algorithm having fewer calculation amount.SOLUTION: The sensor network system comprises: a plurality of sensor nodes SN each of which ha...

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Bibliographic Details
Main Author SHINOHARA HISAKUNI
Format Patent
LanguageEnglish
Japanese
Published 15.06.2017
Subjects
CONTROL OR REGULATING SYSTEMS IN GENERAL
CONTROLLING
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
FUNCTIONAL ELEMENTS OF SUCH SYSTEMS
MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS
PHYSICS
REGULATING
SIGNALLING
TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILARSIGNALS
WIRELESS COMMUNICATIONS NETWORKS
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Summary:PROBLEM TO BE SOLVED: To provide a sensor network system which easily and accurately performs abnormality determination with respect to a time-series event with an algorithm having fewer calculation amount.SOLUTION: The sensor network system comprises: a plurality of sensor nodes SN each of which has a sensor unit 11 for detecting information from a sensor object, an arithmetic unit 12 for performing arithmetic operation of detected sensor information so as to obtain abstraction data, and an internal communication unit 13 for transmitting abstraction data to a controller node CN through a network 200; and the controller node CN which has a memory unit 24 for previously storing vector data of a sensor object which is in an initial/normal state, an internal communication unit 21 for receiving abstraction data transmitted from the plurality of sensor nodes SN through the network 200, and an arithmetic unit 22 for determining a state of a sensor object by performing comparison/operation between vector data obtained by performing vector conversion on the received abstraction data and vector data in an initial/normal state.SELECTED DRAWING: Figure 7 【課題】計算量の少ないアルゴリズムで、時系列の事象に対して容易で且つ高精度に異常判定を行うセンサネットワークシステムを提供する。【解決手段】センサ対象から情報を検知するセンサ部１１と、検知したセンサ情報を抽象化データに演算する演算部１２と、抽象化データを、ネットワーク２００を介してコントローラノードＣＮに送信する内部通信部１３とを備える複数のセンサノードＳＮと、センサ対象の初期／正常状態時のベクトルデータを予め保存するためのメモリ部２４と、複数のセンサノードＳＮから送信される抽象化した抽象化データを、ネットワーク２００を介して受信する内部通信部２１と、受信した抽象化データをベクトル変換したベクトルデータを、初期／正常状態時のベクトルデータと比較／演算することでセンサ対象の状態を判定する演算部２２とを備えるコントローラノードＣＮとを備える。【選択図】図７
Bibliography:Application Number: JP20150240915