Method for reducing power consumption of sensors
First Claim
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1. A method for reducing power consumption of sensors provided for sensing conditions within a sensor network comprising the steps of:
- a central controller receiving sensor data comprising current sensed condition data transmitted from a plurality of different sensors;
said central controller calculating a correlation between said plurality of different sensors on the basis of the received sensor data and calculating a transmission schedule for said sensors on the basis of a correlation between sensor data comprising sensed condition data transmitted from said plurality of different sensors to the central controller, wherein the transmission schedule is made up of time periods, such that sensors with a high correlation having a correlation coefficient exceeding a predetermined adjustable threshold value do not transmit sensor data to said central controller during the same time period and wherein sensors without a high correlation transmit sensor data to the central controller substantially during the same time period; and
wherein the central controller assigns transmission periods to each sensor for transmitting sensor data to said central controller according to the calculated transmission schedule.
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Abstract
A method for reducing power consumption of sensors (2) within a sensor network (1), wherein a central controller (3) calculates a transmission schedule for said sensors (2) on the basis of a correlation between sensor data transmitted from said sensors (2) to the central controller (3).
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Citations
14 Claims
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1. A method for reducing power consumption of sensors provided for sensing conditions within a sensor network comprising the steps of:
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a central controller receiving sensor data comprising current sensed condition data transmitted from a plurality of different sensors; said central controller calculating a correlation between said plurality of different sensors on the basis of the received sensor data and calculating a transmission schedule for said sensors on the basis of a correlation between sensor data comprising sensed condition data transmitted from said plurality of different sensors to the central controller, wherein the transmission schedule is made up of time periods, such that sensors with a high correlation having a correlation coefficient exceeding a predetermined adjustable threshold value do not transmit sensor data to said central controller during the same time period and wherein sensors without a high correlation transmit sensor data to the central controller substantially during the same time period; and wherein the central controller assigns transmission periods to each sensor for transmitting sensor data to said central controller according to the calculated transmission schedule. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for reducing power consumption of sensors provided for sensing conditions within a sensor network comprising the following steps:
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(a) transmitting in an initial learning phase sensor data comprising sensed condition data from a plurality of different sensors independently of each other to a central controller; (b) calculating on the basis of the sensor data received by said central controller a correlation between said plurality of different sensors; (c) calculating a transmission schedule made up of time periods, such that sensors with a high correlation having a correlation coefficient exceeding a predetermined adjustable threshold value do not transmit sensor data to said central controller during the same time period and wherein sensors without a high correlation transmit sensor data to the central controller substantially during the same time period; and (d) assigning transmission periods to each sensor for transmitting sensor data according to the calculated transmission schedule.
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9. A sensor network with reduced power consumption comprising:
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(a) a plurality of sensors provided for sensing conditions each generating local sensor data; and (b) at least one central controller for processing sensor data comprising current sensed condition data transmitted by a plurality of different sensors to said central controller, wherein the central controller calculates a correlation between said plurality of different sensors on the basis of the received sensor data and calculates a transmission schedule for said sensors on the basis of a correlation between sensor data of different sensors, wherein the transmission schedule is made up of time periods, such that sensors with a high correlation having a correlation coefficient exceeding a predetermined adjustable threshold value do not transmit sensor data to said central controller during the same time period and wherein sensors without a high correlation transmit sensor data to the central controller substantially during the same time period; and wherein the central controller assigns transmission periods to each sensor for transmitting sensor data to said central controller according to the calculated transmission schedule. - View Dependent Claims (10, 11, 12)
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13. A central controller for a sensor network having a plurality of sensors for sensing conditions comprising:
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a receiver for receiving sensor data comprising current sensed condition data transmitted from different sensors of said sensor network; and processing component for determining a correlation between received sensor data comprising sensed condition data received from different sensors and for generating a transmission schedule for said sensors on the basis of a correlation between the received sensor data, wherein the transmission schedule is made up of time periods, such that sensors with a high correlation having a correlation coefficient exceeding a predetermined adjustable threshold value do not transmit sensor data to said central controller during the same time period and wherein sensors without a high correlation transmit sensor data to the central controller substantially during the same time period; and wherein the central controller assigns transmission periods to each sensor for transmitting sensor data to said central controller according to the calculated transmission schedule. - View Dependent Claims (14)
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Specification