| 摘要 |
PURPOSE: A sensor tag control method is provided to efficiently manage the battery power of a sensor and a tag by automatically determining the generation of sensing data from the tag constituting RF communication function and producing important sensing data. CONSTITUTION: Once sensing data is generated from RF(Radio Frequency) part, the RF part permits the power source of a battery to a sensor part. By using the power source, the RF part receives data sensed from the sensor part(915). The data received from the sensor part is read and stored, and transmitted to an external device or immediately transmitted to the external device(935). The RF part cuts the power source permitted from the sensor part when the data has not been received within the limited time after the permission from power source. [Reference numerals] (900) Checking environmental variable change for generating(obtaining) sensing data and power supply from an RF unit to a sensor; (905) Checking environmental variable change?; (910) Generating(obtaining) the sensing data from the RF unit to the sensor; (915) Checking sensing data generation(acquisition)?; (920) Receiving the sensing data and storing the sensing data in a sensing data storage area of a memory; (925) Checking wireless frequency reception; (930) Receiving a wireless frequency signal?; (935) Transmitting the stored sensing data to an RF reader; (940) Deleting and initializing the stored sensing data; (AA) Start; (BB,DD,FF) No; (CC,EE) Yes |
