Researchers at the University of Tokyo have developed a flexible, self-powered armband that will sound an alarm when the wearer runs a temperature.
The fever alarm armband starts beeping when a thermal sensor detects a pre-set body temperature of between 36.5 and 38.5C.
The device combines a flexible silicon solar panel, piezoelectric speaker, temperature sensor and power supply circuit with organic components in a wearable armband.
"Our fever alarm armband demonstrates that it is possible to produce flexible, disposable devices that can greatly enhance the amount of information available to carers in healthcare settings,” Professor Takao Someya, a lead researcher, said.
"We have demonstrated the technology with a temperature sensor and fever alarm, but the system could also be adapted to provide audible feedback on body temperature, or combined with other sensors to register wetness, pressure or heart rate."
The wearable fever alarm will be presented at the International Solid State Circuits Conference in San Francisco this week.
The research group was led by Professor Takayasu Sakurai of the Institute of Industrial Science and Professor Takao Someya of the Graduate School of Engineering.
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