<；P>；PROBLEM TO BE SOLVED: To enable instant communications of more data valid in a sensor node driven using a battery. <；P>；SOLUTION: A control data creation section 106 uses a series of user behaviors (user behavior records) stored in a user behavior storage section 105 as training data, estimates a user's behavior state when changing a control state of a power supply of a user state measuring part 121 of a user sensor section 120 within a specified range, creates control data for performing control of power supply of the user status measuring part 121 by comparing this estimated behavior state (changed user behavior) with the behavior state (user behavior) in the training data so that recognition rate indicating a matching rate of these may serve as a maximum and stores the created control data in a control data storage section 107. <；P>；COPYRIGHT: (C)2009,JPO&INPIT
