Open innovation by SMK

mmWave Vital Sensor

The sensor can detect the driver’s Heart Rate (HR), Breathing Rate (BR), and Heart Rate Variability (HRV) by a sensing technology utilizing mmWave radar. Analysing the reflected wave from the driver/passenger, the sensor can detect the HR, BR and HRV from its micro movement of the body. Even under driving conditions, which is quite difficult for a common, our original algorithm establishes accurate vital data detection with no contact by eliminating the driver’s body movement and the automotive-related vibration.

Product Overview

  • 01

    Our 60 GHz band FMCW radar sensor enables contactless acquisition of vital data such as the driver's HR and BR from the seatback while driving.

  • 02

    Utilising a unique noise-resistant filter and algorithm, it enables the detection of HRV even in driving conditions.

  • 03

    Estimates and outputs occupant health conditions such as stress levels, drowsiness and motion sickness.
    *Customisation supported/Under development.

FMCW:Frequency Modulated Continuous Wave. A method of transmitting radio waves while varying the frequency over time.

Technical Overview

Under Development

●Flow from radio wave transmission to data output
Our unique noise removal and signal processing technology eliminates body motion noise, reflected noise from the vehicle body, and vibration noise in the driving environment, and extracts biometric data with high accuracy.
Product Specifications
Item Sample Specifications
Sensor Type 60 GHz band FMCW radar
Compatible Standards Compliant with national radio laws
Antenna Directivity Azimuth 120°
Elevation 120°
External Size 52x52x15㎜
*Prototype/Customise are available
Power Supply USB bus powered
output *
Heart Rate (bpm),
Breathing Rate (bpm),
Heart Rate Variability (ms),
and Raw Data are available
Stress, Emotion, Drowsiness, and Motion
*Sickness, etc. are under development
Interface USB
Casing Plastic

*Customization available

Sensor Size/External Drawing

Sensor Evaluation Environment

The accuracy can be evaluated by attaching a reference sensor to the subject and synchronously comparing it with the measurement results from the radar-based vital sensor.

(Image of measurement screen)

Use Cases

As a sensor for driver and passenger monitoring systems, it can be used to alert the driver in abnormal situations and create a more comfortable car interior.

  • Alert

    Estimate drowsiness and
    loss of concentration.

    Accident prevention

  • Abnormal

    Predict sudden changes in physical condition.

    Accident prevention

  • Estimate
    stress condition

    Comfortable interior

Demonstration Video

  • Demonstration Video of mmWave Vital Sensor

The sensor is installed on a car seatback to acquire data on the driver’s heart rate and breathing rate while the car is stopped, driving on a public road, and driving on a highway. You can see the accuracy comparison with a reference sensor in each case.

Please feel free to contact us
for technical questions,
collaboration inquiries, etc.

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