Sensor network system for managing the latest data and history data
First Claim
1. A sensor network system comprising:
- a sensor terminal, which alternates between an activated state and a sleeping state, collects and transmits observation data by wireless communications in said activated state and stops collecting and transmitting observation data in said sleeping state; and
a management server, which includes;
a latest data storage manager which manages a set of latest observation data of observation data received from said sensor terminal;
a history data storage manager which manages history data of the observation data received from said sensor terminal from a set of previous observation data received from said sensor terminal to said set of latest observation data; and
a missing data manager which manages loss of said history data indicating missing observation data transmitted from said sensor terminal and not received by said management server,wherein said missing data manager sends a retransmission request to said sensor terminal to retransmit the missing observation data that was not received by said management server based on a predetermined rule,wherein said sensor terminal, upon receiving said retransmission request from said management server, retransmits said missing observation data to said management server, andwherein, in case that a request for observation data is received from user terminal, at least one of the set of latest observation data managed by said latest data storage manager and the history data managed by said history data storage manager is output to said user terminal according to a type of said request for observation data received from said user terminal.
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Accused Products
Abstract
In a sensor network system comprising a sensor terminal and a management server, the sensor terminal transmits observation data acquired using the sensor, the management server has a latest data storage manager which manages the latest observation data among observation data received from the sensor terminal, a history data storage manager which manages the history of the observation data from any time when data was received from the sensor terminal to the latest observation data, and a missing data manager which manages missing history data, and compensates the missing history data based on a predetermined rule, and when a request for such observation data is received, at least one of the latest observation data managed by the latest data storage manager, and history data wherein the missing data has been compensated and managed by the history data storage manager, is output according to the type of request.
26 Citations
19 Claims
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1. A sensor network system comprising:
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a sensor terminal, which alternates between an activated state and a sleeping state, collects and transmits observation data by wireless communications in said activated state and stops collecting and transmitting observation data in said sleeping state; and a management server, which includes; a latest data storage manager which manages a set of latest observation data of observation data received from said sensor terminal; a history data storage manager which manages history data of the observation data received from said sensor terminal from a set of previous observation data received from said sensor terminal to said set of latest observation data; and a missing data manager which manages loss of said history data indicating missing observation data transmitted from said sensor terminal and not received by said management server, wherein said missing data manager sends a retransmission request to said sensor terminal to retransmit the missing observation data that was not received by said management server based on a predetermined rule, wherein said sensor terminal, upon receiving said retransmission request from said management server, retransmits said missing observation data to said management server, and wherein, in case that a request for observation data is received from user terminal, at least one of the set of latest observation data managed by said latest data storage manager and the history data managed by said history data storage manager is output to said user terminal according to a type of said request for observation data received from said user terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification