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NEWS Robotics

Human Vital Signs Monitoring Solutions

DFRobot May 29 2024 185

With the continuous advancement of technology, human physiological monitoring techniques play an increasingly crucial role in health management and medical diagnosis. By integrating various cutting-edge sensor technologies, we can design the following human physiological monitoring technology solutions.


 

Overview on Human Vital Signs Monitoring Solutions

The current human monitoring technologies include wearable devices, biosensors, millimeter-wave radar, and remote monitoring systems. They achieve high-precision monitoring of physiological characteristics and provide comprehensive medical solutions.

  • Wearable Devices: Wearable devices based on sensor technology, such as smart wristbands and smart watches, are used to monitor physiological indicators such as heart rate, steps, and sleep quality.
  • Biosensors: Using biosensor technology, such as heart rate sensors, blood oxygen sensors, and respiratory sensors, to monitor human physiological characteristics.
  • Millimeter-wave radar technology: Using millimeter-wave radar technology to achieve non-contact monitoring using electromagnetic waves in the millimeter-wave frequency band, realizing high-precision monitoring of physiological characteristics such as human respiration and heartbeat, such as UWB Bio-Radar, millimeter-wave human detection sensors, and the like.
  • Remote monitoring system: Providing an online platform where medical staff can view the patient's vital sign data in real-time, set monitoring parameters, conduct data analysis and diagnosis, and also communicate remotely with the patient.


 

Millimeter-wave Radar Human Body Monitoring Solution

The millimeter-wave radar human monitoring solution is a human monitoring solution based on millimeter-wave radar technology. This solution utilizes millimeter-wave radiation for long-distance, non-invasive monitoring of human characteristics. The millimeter-wave human detection sensor is a core component of millimeter-wave radar technology, used for transmitting and receiving millimeter-wave signals. By analyzing the reflection and scattering information of millimeter-waves on the human body surface, real-time and accurate physiological data such as heartbeat, respiration, and body movements can be obtained.

Millimeter-wave Radar Human Body Monitoring Solution
 

 

Advantages of Millimeter-wave Radar Technology

The reason why millimeter-wave radar technology can be applied to human vital sign monitoring is mainly due to its characteristics and advantages as follows:

  • Strong penetration: Millimeter waves can penetrate a certain thickness of clothing and skin, enabling non-invasive monitoring and providing a more natural and convenient monitoring experience.
  • High precision: Millimeter-wave radar can achieve high-precision monitoring of small movements and physiological features, such as heart rate and respiration, ensuring the accurate acquisition of human physiological data.
  • Real-time capability: It can monitor human characteristics in real-time, providing vital support for emergency rescue, timely intervention, and monitoring.
  • Long-distance monitoring: Millimeter-wave radar technology can monitor from a distance, making it suitable for various scenarios and environments, thereby expanding the applicability of monitoring.


 

Subdivision of Millimeter-wave Radar Human Body Monitoring

Millimeter-wave radar technology demonstrates remarkable potential applications in the field of human feature monitoring. Through millimeter-wave radar technology, it is possible to monitor the cardiac health status, including real-time monitoring of heart rate and heartbeat conditions. Simultaneously, it can also evaluate sleep quality, assisting individuals in better managing sleep habits and health conditions; furthermore, millimeter-wave radar can be utilized for monitoring fall detection, promptly detecting fall incidents, and providing timely alerts and support.


 

Heart Health Monitoring

Using millimeter-wave sensor technology combined with heartbeat measurement sensors enables real-time monitoring of individual cardiac health status. Through the high-frequency signals of millimeter-wave sensors, non-contact, high-precision heartbeat measurements can be achieved, providing a remote cardiac health monitoring solution. This technology is applicable not only in the field of health management but also holds significant importance for the regular monitoring and remote medical care of patients with heart diseases.


 

Respiration Monitoring

By integrating millimeter-wave sensors and respiration measurement sensors, dynamic monitoring of individual respiratory health conditions can be achieved. Remote respiratory signal collection can be accomplished through millimeter-wave sensors, and coupled with the monitoring and analysis of respiratory parameters by respiration measurement sensors. This combined approach enables the timely detection of abnormal breathing patterns, providing strong support for early screening of respiratory system diseases.


 

Body Motion Monitoring

By combining millimeter-wave sensors with motion sensors such as accelerometers and gyroscopes, it is possible to not only monitor an individual's real-time movement status and spatial position, but also integrate heart rate and respiration data to analyze body motion parameters specific to certain exercise patterns, such as walking cadence, running speed, and body posture balance. This system can be applied in areas such as fitness monitoring, sports rehabilitation, and correcting body posture.


 

Motion State Monitoring

Combining heart rate measurement sensors and millimeter-wave sensors enables real-time monitoring of an individual's movement states, including static, walking, running, and other activities. By analyzing parameters such as heart rate, respiratory depth, and movement intensity, the system can accurately determine the individual's movement state and provide appropriate exercise recommendations or guidance. This is beneficial for monitoring athletes' training and supervising daily activities of the elderly.

 

Fall Detection

By monitoring spatial position changes, body motion parameters, heart rate, and sleep quality assessment using sleep monitoring sensors, the system can identify abnormal falling. When a fall is detected, the system can issue an alert, automatically send notifications or distress signals, and provide timely assistance. This is crucial for monitoring elderly individuals living alone and providing protection during athletes' training processes.


 

Sleep Quality Monitoring

By integrating sleep monitoring sensors into the technological solution and harnessing their accelerometer and sleep monitoring technology, comprehensive monitoring of individual sleep quality can be achieved. Through the detection of sleep posture, sleep duration, movement frequency, as well as environmental parameters such as temperature and humidity, the analysis of sleep data by sleep monitoring sensors enables the provision of personalized sleep improvement recommendations for users. Moreover, it holds significant importance for the remote monitoring of patients with sleep disorders and sleep apnea.

 

Millimeter Wave Radar Human Monitoring Test Results

Based on the monitoring scheme described above, which includes testing the motion detection distance, the detection distance while present, heart rate testing, respiratory rate testing, and sleep information detection using millimeter-wave human detection sensors during human sleep, the results indicate that millimeter-wave radar technology can be used in human vital sign monitoring schemes.

Millimeter Wave Radar Human Monitoring Test Results

 

 

Heart Rate Test Results

The following is a preliminary experiment, it can be observed that if the sensor is placed 1.5 meters directly in front of the human body, facing the chest of the person being monitored, heart rate data can be obtained. This preliminary experiment demonstrates that this technology has already achieved a certain level of practicality

Time1 Mins2 Mins3 Mins4 Mins
Heart Rate Date69637872

 

Respiration Rate Test Results

In the above experiment, we can not only obtain heart rate data but also respiratory state data. Test subjects follow different frequency pacemakers to breathe, verifying the accuracy of sensor heart rate tests. It can be seen that millimeter-wave radar can effectively detect the accuracy of respiratory rate.

Respiration Rate1112131415161718
Detection Frequency1011111314151616

 

Results:

Using millimeter-wave radar sensors, we also conducted some simple sleep tests. Placing the sensor as shown in the figure at the head of the bed, the test subject slept normally next to the camera, contrasting the sensor output data with the video data to test the accuracy of sleep information detection by the sensor. Based on the actual video and millimeter-wave radar data comparison, it was found that the sensor output results almost perfectly matched the video data, enabling the detection of when the person is in bed, out of bed, the sleep state, and sleep statistics.

millimeter-wave radar sensors sleep tests

 

 

Conclusion

Currently, human physiological monitoring solutions primarily utilize wearable smart devices and wireless sensors combined with mobile network applications to achieve real-time monitoring of individual physiological data, which aids in understanding the body's condition and adjusting behavior or treatment plans. At the same time, millimeter-wave radar technology, as a non-invasive monitoring technique, possesses high-resolution contactless biometric detection capabilities and holds significant potential and application prospects in healthcare, emergency rescue, and security.

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