An Alerting Wireless Sensor System for Long Period of Immobilized Elderly in a Residential Room
Nilamit Nilas · 2011
This paper presents a low cost wireless sensor network system which is developed to be an alerting system for relatives or caregivers when the elder is immobile for a long period. The alerting signal is sent via the Interne t link and a mobile phone. Remote transducers capture input signal from the mobility subject. If the target subject has imm obilized behavior for long period, which is analyzed abnormal condition, the system will send the alerting messag es to a selected mobile phone or Internet link. After detec tion of motionless elder from the set-point periods, the sy stem immediately distributes messages via SMS on the mobile network and a server to warn a relative or a caregi ver with the image option to send. The sensor modules have ease- of- installation with coverage area nearly 3 square met ers, 80 % of detection level suitable for a small room and a bat hroom.