The hottest 3D printing ear mounted sensor monitor

2022-08-05
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3D printing "ear mounted" sensor monitors vital signs

fitness tracking wristband and bracelet are mainly used to measure steps and monitor heart rate and vital signs. It is reported that the control of decarburization layer depth is an important aspect of performance control in the production of high-strength and excellent spring steel. In addition, engineers have made ear mounted 3D printing sensors to continuously track core body temperature and meet health and medical needs

this 3D printing "ear mounted" device can also be used as a hearing aid, and can also be used as a platform to sense some other vital signs, said Li javey, professor a of the Department of electrical engineering and computer science at the University of California, Berkeley, who is in an exploratory stage

core body temperature is a basic indicator of health problems such as fever, insomnia, fatigue, metabolic function and depression. Continuous core temperature measurement is crucial for infants, the elderly and patients with severe illness, javey said. Current wearable sensors such as wristbands and flexible patches can monitor human skin temperature. However, human skin temperature changes with the environment and is usually different from the core temperature of the human body

body temperature can be measured by invasive oral or rectal readings. Ear canal thermometers obtain body temperature data by measuring the infrared energy emitted from the eardrum, and are easier to use than invasive devices. This is also the design route adopted by javey and his colleagues for their EARWEAR sensors. The research results have been published in the journal ACS (American Chemical Society) sensors

in order to customize the sensor suitable for individual ears, javey and his team used flexible materials and 3D printers to print the sensor. First, they failed to meet the performance requirements by printing a thin, disc-shaped substrate using a stretchable polymer. The substrate contains tiny channels into which liquid metal is injected to form electrical interconnections instead of metal wires. The substrate also has empty slots for embedding infrared sensors, microprocessors, and Bluetooth modules that transmit temperature readings to smart apps. They then packaged the assembled gadget in a 3D printing shell

as the device will cover the ears, engineer Yang is the manager of the technology center responsible for developing PA products, so it may affect hearing, javey said. So the engineers also embedded a bone conduction hearing aid, including a microphone, a data processing circuit, a potentiometer for adjusting the volume, and an actuator. The actuator, located next to the temple, converts sound into vibration and transmits it to the inner ear through the skull

this earring device can accurately measure the core body temperature of volunteer wearers, whether in a room cooled or heated to various temperatures, or when exercising on a fitness bike

"it can be used continuously for about 12 hours without charging," javey said. "In the future, power consumption can be further reduced by using low-power electronic components (including Bluetooth modules)."

researchers plan to increase the function of the device by integrating sensors for measuring EEG, heart rate and blood oxygen levels. They also plan to test in a variety of environments

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