Hi, my name is Adeel Ahmad, and I'm a systems engineer at Texas Instruments. Today, I'm going to show you an example of how TI millimeter wave sensors can accurately measure movements and distances on the order of micrometers,

In this example, we'll show how we can use that capability to measure the breathing rate and heart rate of a person when the radar is pointed at their chest. The person will be sitting about one meter away from the radar, but we've demonstrated this capability at distances up to five meters.

The graph on the bottom left of the screen shows a chest displacement over time. The big dips represent when the person breathes in and out, which is a displacement of a couple of millimeters. The smaller dips are how the chest moves due to heartbeats, which is a displacement of around 100 to 200 micrometers. Our millimeter wave sensor with onboard programmable processing cores then filters out the breathing and heartbeat pattern from the chest displacement and estimates the breathing rate and heart rate from this data, where it is displayed at the top of the screen.

Now when the person holds her breath, we can see that the breathing rate goes to 0. Millimeter wave sensors are so accurate and so sensitive to movement that it's nearly impossible to play dead.

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