Design Of Wireless Monitoring System For Solitary Old People

With the rapid development of economy and the rapid progress of urbanization,great changes have taken place in the population structure of our country,and the number of old people has increased year by year.In the fierce competition modern society,young people's personal time is occupied by a large amount of work,so the time for caring the elderly is becoming less and less.At present,the number of elderly people living alone is increasing,and because of the rising age and deterioration of the physical condition,the Self-care ability of elderly's is insufficient.Therefore,it has become increasingly important to study the guardianship of the elderly living alone for improving their guardianship.In this paper,the device which was integration of various monitoring sensors,through a wireless data transfer methd,has Low power performance.The desigened of Low Dissipation Operation included optimization of software and hardware..The elder would be be under closer watch by the device that integrated the monitoring of physiological parameters and the monitoring of gas in the environment and could automatically determine dangerous signals.The main contents of this paper include the following aspects: The basic method and design principle of single chip microcomputer are studied,the usage of wireless RF chip NRF90,smoke sensors,temperature sensors,and the desigen of circuit,programming software.The software was programmed by Keil which included wireless data transmission module,the smoke data acquisition module,the voice module and the main control module.At last the device proved to to work steadily and reliably.