At present, most of the smart bracelets on the market collect user's sports data and heartbeat, blood pressure and other data, and then display them in the form of APP, which satisfies consumers' pursuit of "fun" and "cool" to some extent. Unlike commercial products, Nature magazine has published an article that mentions that scientists at Stanford University and the University of California have developed a wearable smart device that can diagnose diseases, hoping only through the analysis of sweat. Achieve more comprehensive physiological monitoring and disease diagnosis for the human body.
Recently, these scientists have published the latest research results in the Journal of the National Academy of Sciences. Ronald Davis, a professor of biochemistry and genetics at Stanford University, and his friends say that the latest wristband devices with sensitive sensors and microprocessors can accurately diagnose diseases such as diabetes and cystic fibrosis. What's more interesting is that the new device actively stimulates the sweat gland to produce the trace amount of sweat needed for detection without any discomfort.
Professor Ronald Davis (Source: Stanford University official website)
The sweat that our body excretes is like a book with a lot of information. The changes in the contents of various chemicals, such as electrolytes, heavy metals and proteins, can reveal the physiological changes that are taking place inside the body. For example, ethanol and glucose in sweat are closely related to ethanol and glucose in blood, and sweat chloride detection is a standard diagnostic procedure for cystic fibrosis.
Sweat analysis has never been a new concept, but it is now necessary to collect sweat separately and send it to the laboratory for analysis using various instruments. Therefore, if there is a smart watch that can perform real-time data collection and analysis on human sweat, it can monitor the health of the user at the molecular level. This will have essential differences and absolute advantages with "smart medical " devices such as Fibit, Misfit, Apple Watch and various blood glucose meters!
The idea is such an idea, but the real implementation is a complicated project. In order to achieve real-time capture of human sweat data in a non-invasive way, the research team developed a wearable sweat collection and sensing system, a sensor made of special plastic material as an interface to the skin, and a flexible circuit board. The silicon chip performs complex signal processing.
Electrode array and wireless flexible printed circuit board (FPCB)
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