The new sensor, created using metamaterials, can detect slight body movements even under vibration and noise conditions specific to automobiles. To do this, special conductive threads were sewn into the seat belt material, which enhance radio waves and interaction with the human body.
According to the developers, existing tracking devices often fail in moving vehicles due to vibration noise, but their new biosensor successfully overcomes this problem.
The seat belt was tested in various conditions: in an airplane seat simulator and in a car on a 1.5-hour route in Singapore. The sensor reliably recorded the driver’s heart rate and breathing despite vibrations and changes in road conditions. Moreover, the system successfully detected changes in a person’s physiological state, such as transitions between sleep and wakefulness.
In the future, developers plan to miniaturize the device for mass production, as well as create algorithms that will analyze the driver’s condition and detect signs of fatigue or stress.
Source: Ferra
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