JP2013059125A5

JP2013059125A5 -

Info

Publication number: JP2013059125A5
Application number: JP2012277864A
Authority: JP
Filing date: 2012-12-20
Publication date: 2014-12-11

Description

上記課題を解決するために、本発明のセンサネットワークシステムは、スマートメータに対応付けた複数のセンサノードと、複数のセンサノードからデータを収集し、また、センサノードにデータを配信するゲートウェイ機器と、ゲートウェイ機器からデータを受信し、また、ゲートウェイ機器にデータを送信するセンター装置と、を備え、センサノード間、センサノードとゲートウェイ機器との間、および、ゲートウェイ機器とセンター装置との間は無線通信が実行され、ゲートウェイ機器のセンサノードに対する比率が１／α以下の場合、ゲートウェイ機器の通信可能範囲に相当する円の半径を、センサノード間の距離の√（α／π）倍以上とすることを特徴とする。また、ゲートウェイ機器間の距離をゲートウェイ機器の通信可能範囲に相当する円の半径の２倍以下としてもよい。
In order to solve the above problems, a sensor network system of the present invention includes a plurality of sensor nodes associated with a smart meter, a gateway device that collects data from the plurality of sensor nodes, and distributes the data to the sensor nodes. receives data from the gateway device, also, and a center apparatus for transmitting data to the gateway device, between the sensor nodes, between the sensor nodes and the gateway device, and, between the gateway device and the center device nothingness When line communication is executed and the ratio of gateway device to sensor node is 1 / α or less, the radius of the circle corresponding to the communicable range of the gateway device is set to √ (α / π) times or more of the distance between sensor nodes. vinegar Rukoto and features. Further, the distance between the gateway devices may be not more than twice the radius of a circle corresponding to the communicable range of the gateway device.

Claims

A plurality of sensor nodes associated with the smart meter;
A gateway device that collects data from the plurality of sensor nodes and distributes the data to the sensor nodes;
A center device that receives data from the gateway device and transmits data to the gateway device;
With
Between the sensor nodes, between the sensor node and the gateway device, and, between the between the gateway device center apparatus no line communication is executed,
If the ratio is less than 1 / alpha with respect to the sensor nodes of said gateway device, the radius of the circle corresponding to the communication range of the gateway device, shall be the √ distance between the sensor node (α / π) times A sensor network system characterized by the above.

The sensor network system according to claim 1, wherein a distance between the gateway devices is set to be not more than twice a radius of a circle corresponding to a communicable range of the gateway devices .

The sensor node is
A sensor node in a position capable of wireless communication with the gateway device is associated with rank 1, is in a position capable of wireless communication with rank n (n = 1 or greater), and is not associated with ranks 1 to n. a sensor network system according to claim 1 or 2, characterized in that it comprises a rank setting unit for associating the sensor node No. n + 1.

When the rank setting unit becomes unable to wirelessly communicate with a sensor node with a higher rank, the rank setting unit associates itself with a rank one lower than the sensor node with the highest rank among sensor nodes capable of wireless communication. The sensor network system according to claim 3 .

The sensor network system according to claim 3 or 4 , wherein the rank setting unit limits the rank of the sensor node to a predetermined rank.

The sensor node is
A data transmission / reception unit for receiving data from a sensor node higher than its own rank and broadcasting the data, and when there is no sensor node lower than its own rank within a wireless communication range, a sensor network system according to claims 3 to any one of the 5, characterized in that it comprises.

A plurality of sensor nodes associated with the smart meter, a gateway device that collects data from the plurality of sensor nodes, distributes data to the sensor nodes, receives data from the gateway device, and the gateway In a sensor network system comprising a center device that transmits data to a device, wireless communication is performed between the sensor nodes and between the sensor node and the gateway device, and between the gateway device and the center device. Performs wireless communication through a paid network,
The sensor node is
A sensor node in a position capable of wireless communication with the gateway device is associated with rank 1,
A communication path setting method characterized by associating a sensor node that is wirelessly communicable with rank n (an integer greater than or equal to 1) and not associated with ranks 1 to n with rank n + 1.