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A new strolling control method for aged who are suffering from senile dementia and living in closed area of welfare institution is developed. It is using LF band RFID (Radio Frequency Identification) to control a partition door. Battery-less operation is available in the RFID marker. It is difficult to be carried the marker by the aged. However, it is easy to be carried it by the staff like as nurse. In this study, the marker is set on a nurse cap and so on. If the nurse with marker approach to the door, RFID sensor detects it. If the door is controlled by the detection information, the nurse is able to enter to the area and exit from the area. But, the aged without marker can not pass the door, since the RFID sensor can not detects the marker. By this method, strolling control of the aged realizes relatively. However, an identification distance of RFID is short. In this study, RFID sensor antenna and marker antennas are set to suitable condition. In the first step, two types of sensor antenna are produced. Those sizes are 1000mm by 1000mm and 1050mm by 150mm. Former is set to ceiling. Later is set to door top. In the second step, new type marker antenna is produced. Its size is 60mm in diameter. In experimental results, a combination of ceiling antenna and 60mm marker indicate over 880mm identification distance from the door. A combination of door top antenna and 60mm marker also indicates over 450mm identification distance form the door. It is enough distance to control the partition door. It was also evidenced by field experiment.

Strolling Control of Aged who are Suffering from Senile Dementia in Welfare Institution by Partition Door Control with Battery-less Marker for Staff