In this paper, we proposed an infant monitoring system to reduce the potential risks for Sudden Infant Death Syndrome (SIDS). This system can be used for infants at home or in a hospital nursery room. The system consists of carbon dioxide (CO2) sensors and active Radio Frequency Identification (RFID) technology. A commercial metal-oxide based CO2 sensor was chosen and characterized in sensitivity, selectivity and humidity dependence. A proof-of-concept system, to be used for two infants in the same room, was designed and assembled.
The RFID transmission was accomplished with a wireless module at two different operating frequencies. The results are promising. A method for further practical applications in a large nursery room is also discussed in details in this paper. In our proposed system, the transmitter is in the sleeping mode and will be waken up only when its sensor circuitry sends an alarm signal or the base station sends a request to receive sensory data.
The alarm signal of each infant is the ID designated for the crib. The sensory data sent inborn disorders; we might need to examine the CO2 concentration in their exhaled air regularly and frequently. Besides the alarm signal, we multiplex and transmit all sensor signals along with the infant’s ID for diagnosis purposes. At the receiver side, an alarm will be triggered as soon as an alarm is sent by the identified transmitter while the server starts to record the data
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