Compact Millimeter-Wave Sensor for Remote Monitoring of Vital Signs

2012 ◽  
Vol 61 (3) ◽  
pp. 830-841 ◽  
Author(s):  
Sasan Bakhtiari ◽  
Thomas W. Elmer ◽  
Nicholas M. Cox ◽  
Nachappa Gopalsami ◽  
Appostolos C. Raptis ◽  
...  
Sensors ◽  
2021 ◽  
Vol 21 (23) ◽  
pp. 7893
Author(s):  
Kai Guo ◽  
Chang Liu ◽  
Shasha Zhao ◽  
Jingxin Lu ◽  
Senhao Zhang ◽  
...  

In response to the current demand for the remote monitoring of older people living alone, a non-contact human vital signs monitoring system based on millimeter wave radar has gradually become the object of research. This paper mainly carried out research regarding the detection method to obtain human breathing and heartbeat signals using a frequency modulated continuous wave system. We completed a portable millimeter-wave radar module for wireless communication. The radar module was a small size and had a WIFI communication interface, so we only needed to provide a power cord for the radar module. The breathing and heartbeat signals were detected and separated by FIR digital filter and the wavelet transform method. By building a cloud computing framework, we realized remote and senseless monitoring of the vital signs for older people living alone. Experiments were also carried out to compare the performance difference between the system and the common contact detection system. The experimental results showed that the life parameter detection system based on the millimeter wave sensor has strong real-time performance and accuracy.


Author(s):  
César Morcillo Serra ◽  
César Morcillo Serra ◽  
Domingo Marzal Martín ◽  
Jorge Velázquez Moro ◽  
José Francisco Tomás Martínez

Background: Telemonitoring with applications and connected devices facilitates a more accessible and efficient attention. Its implementation has been accelerated thanks to the pandemic by COVID-19, where they have allowed the continuity of care. Objective: To evaluate the efficacy of a remote monitoring platform for the outpatient follow-up after hospital discharge by COVID-19. Methods: Prospective observational study of patients discharged from the hospital with COVID-19 infection between March 23 and May 25, 2020, who were followed for one month with the Connected Health telemonitoring platform. The mobile phone application connected to a pulse oximeter, allowed to measure vital signs and answer health questionnaires (EQ5D3L and CAT) daily, and alert the medical team that could be contacted by video consultation. Results: 95 patients (64% male) with a mean age of 54 (SD 26-81) years were included. The application allowed the detection of alerts for pain (80% of patients) and a decrease in oxygen saturation (12%). No patient required hospital readmission or presented complications. The application allowed strict monitoring of symptoms and quality of life. The main symptom was severe pain (59% of patients) followed by anxiety or depression (25%). The average state of health was 65 (SD 20-100). COVID-19 caused a low impact on the quality of life of 62% of the patients, although 8% reported a significant limitation, due to shortness of breath and leaving the house. Conclusion: telemonitoring allows a safe remote monitoring of patients after hospital discharge by COVID-19. The Connected Health application has allowed the measurement of oxygen saturation, symptoms and quality of life, and the detection and management of alerts by the medical team through video consultation.


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