Indian Institute of Technology (IIT) Jodhpur Researchers have introduced the first “Make in India” human breath sensor designed to measure alcohol levels and detect respiratory diseases such as asthma and chronic obstructive pulmonary disease (COPD).
The device’s primary function is to measure alcohol content in the breath in drunk and driving cases. However, with some changes in sensing layers and the use of an array of sensors.
There was a greater need for the development of a quick, affordable, non-invasive health monitoring device, given the growing concerns about the adverse impact of air pollution on human health and the environment. The existing sensors are based on fuel cell-based technology or metal oxide technology.
Hence, it motivated the researchers to take up the work and develop a breath VOC sensor whose cost will be less than the existing fuel cell technology-based device.
The technology underlying this device involves an electronic nose with a room-temperature operable heterostructure, combining metal oxide with nano silicon. As the sensors interact with alcohol in the sample, they exhibit a change in resistance proportional to the alcohol concentration.
Machine learning algorithms process the data collected from the sensor array, identifying patterns of different breath components and segregating alcohol from the mixture of volatile organic compounds.
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