Abstract:
Disclosed are an RFID sensor tag supporting dual mode logging, an RFID sensor reader, and a method for controlling the same. The RFID sensor tag according to an embodiment of the present invention supports a dual mode executing a scheduling logging mode which records sensing data at preset intervals and an alarm event logging mode which records the sensing data under a preset alarm condition, and comprises a control unit which records the sensing data in a memory during operation of the corresponding mode; and the memory which has sensing data recording regions separated by mode.
Abstract:
PURPOSE: A food quality managing method of a smart refrigerator is provided to record surrounding environment information in an own-memory so that a final customer purchases food by grasping an environmental history of a distribution process of each food by using a sensor reader. CONSTITUTION: A food quality managing method of a smart refrigerator is as follows. Food management information is obtained from a sensor tag attached on food(S310). Distribution environmental information is obtained from the sensor tag attached on the food(S320). Current environmental information is obtained from the sensor tag attached on the food(S330). Freshness of the food is calculated based on the food management information, the distribution environmental information, and the current environmental information(S340).
Abstract:
본 발명은 동기식(SDH) 디지털 전송 장치 중 중계기의 클럭 체계를 중심으로 한 다중화 방식 및 그 장치에 관한 것으로, 위상고정루프를 이용한 신호전달 방식을 제안함으로써 종래의 방식에서 주로 사용되는 탄성 버퍼의 필요성을 배제하고 종래의 방식에서 고속 다중부에서 클럭을 내주고 저속다중부에서 신호를 되돌려 받는 방식에서 생기는 소자의 지연문제를 완화시키는 클럭 공급 수단을 제공한다.