Actuator based on sensor actuator network and method of actuating the same
AssigneeElectronics and Telecommunications Research Institute
InventorsHyunhak Kim, Jong-Arm Jun, Nae-Soo Kim
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Abstract
In a wireless sensor actuator network system, actuators to be actuated to correspond to a plurality of sensors are selected using an A-S matrix that represents relationship strength between a plurality of actuators and the plurality of sensors based on sensing data of the plurality of sensors, and only the selected actuators determine actuation values based on values of the A-S matrix.
Claims14
A method of actuating actuators in a wireless sensor actuator network system including a plurality of sensors and a plurality of actuators, the method comprising:
- receiving sensing data from the plurality of sensors for a set report period;
- acquiring an actuator-sensor (A-S) matrix that includes information, based on the received sensing data, indicating strengths of relationships between actuators of the plurality of actuators and sensors of the plurality of sensors;
- acquiring a sensor-sensor (S-S) matrix that includes information, based on the received sensing data, indicating strengths of relationships among said plurality of sensors;
- determining an action group of sensors that generate an event based on the received sensing data, the action group consisting of at least one sensor among said plurality of sensors;
- selecting an event group of sensors from among the sensors of said plurality of sensors using the S-S matrix, the strength of relationship of each sensor of the event group with the at least one sensor of the action group having a value that exceeds a first set value;
- selecting a cooperative group of actuators from among the actuators of said plurality of actuators, the cooperative group corresponding to the action group based on the A-S matrix information;
- determining, by the actuators in the cooperative group, actuation values based on the A-S matrix information;
- actuating the actuators in the cooperative group according to the determined actuation values;
- instructing the sensors of the event group to change the set report period by setting their report period to be shorter than the set report period;
- and
- updating the A-S matrix and the S-S matrix when the sensing data is received from the sensors of the event group for the changed report period.
An actuator of a wireless sensor actuator network system in which the system includes a plurality of actuators and a plurality of sensors, the actuator comprising:
- a communication unit that
- receives sensing data from the plurality of sensors for a set report period;
- and
- a controller that
- acquires an actuator-sensor (A-S) matrix that includes information, based on the received sensing data, indicating strengths of relationships between actuators of the plurality of actuators and sensors of the plurality of sensors, and
- acquires a sensor-sensor (S-S) matrix that includes information, based on the received sensing data, indicating strengths of relationships among the plurality of sensors;
- determines an action group of sensors that generate an event based on the received sensing data, the action group consisting of at least one sensor among said plurality of sensors;
- selects an event group of sensors from among the sensors of said plurality of sensors using the S-S matrix, the strength of relationship of each sensor of the event group with the at least one sensor of the action group exceeding a first set value,
- selects a cooperative group of actuators from among the actuators of said plurality of actuators, the cooperative group corresponding to the action group based on the A-S matrix information,
- determines an actuation value based on the A-S matrix information after the cooperative group is selected,
- controls the actuator to actuate according to the determined actuation value,
- controls the sensors of the event group to change the set report period by setting their report period to be shorter than the set report period, and
- updates the A-S matrix and the S-S matrix when sensing data is received from the sensors of the event group for the changed report period.
Dependencies are inferred from the claim text.