Researchers on the College of Washington have developed GlucoScreen, a smartphone system that may precisely measure blood glucose ranges. The expertise consists of a check strip onto which a person locations a drop of blood. Following an electrochemical response on the strip, the info are transmitted to the smartphone by way of a sequence of faucets on the contact display, considerably like Morse code. Cleverly, the check strip is battery-free and as a substitute derives energy from the smartphone digital camera flash, and the strip can work with any smartphone with a regular touchscreen (and digital camera flash). Thus far, the expertise has been proven to be as correct as normal glucometers, and will help with at-home testing for pre-diabetes.
Prediabetes is a puzzler, with many individuals being fully unaware that they’ve the situation. Growing entry to diagnostic applied sciences might assist extra individuals to change into conscious of their situation, and undertake life-style adjustments to keep away from the event of full-blown kind 2 diabetes. This newest expertise goals to do exactly that by harnessing the facility of the ever present smartphone.
“In standard screening an individual applies a drop of blood to a check strip, the place the blood reacts chemically with the enzymes on the strip. A glucometer is used to research that response and ship a blood glucose studying,” stated Anandghan Waghmare, a researcher concerned within the examine. “We took the identical check strip and added cheap circuitry that communicates knowledge generated by that response to any smartphone by way of simulated tapping on the display. GlucoScreen then processes the info and shows the end result proper on the cellphone, alerting the individual if they’re in danger so that they know to comply with up with their doctor.”
The system doesn’t require a battery, and as a substitute entails attaching a photo voltaic sensor to the smartphone digital camera flash. When the cellphone is used to acquire the blood glucose knowledge from the check strip, the app will have interaction the smartphone flash, offering energy to the check strip in order that it may possibly relay the info. Cleverly, the strips communicates with the cellphone haptically, utilizing a sequence of touches on the smartphone touchscreen to relay the info. The info evaluation itself takes place on the cellphone.
“As a result of we use the built-in capacitive contact display that’s current in each smartphone, our resolution could be simply tailored for widespread use. Moreover, our strategy doesn’t require low-level entry to the capacitive contact knowledge, so that you don’t need to entry the working system to make GlucoScreen work,” stated Jason Hoffman, one other researcher concerned within the mission. “We’ve designed it to be ‘plug and play.’ You don’t have to root the cellphone — in reality, you don’t have to do something with the cellphone, apart from set up the app. No matter mannequin you might have, it can work off the shelf.”
See a video in regards to the expertise beneath.
Research in journal Proceedings of the Affiliation for Computing Equipment on Interactive, Cell, Wearable and Ubiquitous Applied sciences: GlucoScreen: A Smartphone-based Readerless Glucose Test Strip for Prediabetes Screening
Through: University of Washington