A signal sensing system for monitoring the movement of human respiratory muscle based on the thin-film varistor.
10.7507/1001-5515.202407055
- Author:
Yueyang YUAN
1
;
Zhongping ZHANG
1
;
Lixin XIE
2
;
Haoxuan HUANG
3
;
Wei LIU
3
Author Information
1. Innovation Base of Intelligent Diagnostic and Therapeutic in Respiration, Hunan City University, Yiyang, Hunan 413099, P. R. China.
2. Department of Respiratory and Critical Care Medicine, Chinese PLA General Hospital, Beijing 100853, P. R. China.
3. Department of Research and Development, Hunan Micomme Medical Development Co., Ltd, Changsha 410000, P. R. China.
- Publication Type:Journal Article
- Keywords:
Patient-ventilator synchrony;
Respiratory muscle movement;
Thin-film varistor
- MeSH:
Humans;
Respiratory Muscles/physiology*;
Signal Processing, Computer-Assisted;
Movement/physiology*;
Respiration;
Monitoring, Physiologic/methods*;
Adult
- From:
Journal of Biomedical Engineering
2025;42(4):733-738
- CountryChina
- Language:Chinese
-
Abstract:
In order to accurately capture the respiratory muscle movement and extract the synchronization signals corresponding to the breathing phases, a comprehensive signal sensing system for sensing the movement of the respiratory muscle was developed with applying the thin-film varistor FSR402 IMS-C07A in this paper. The system integrated a sensor, a signal processing circuit, and an application program to collect, amplify and denoise electronic signals. Based on the respiratory muscle movement sensor and a STM32F107 development board, an experimental platform was designed to conduct experiments. The respiratory muscle movement data and respiratory airflow data were collected from 3 healthy adults for comparative analysis. In this paper, the results demonstrated that the method for determining respiratory phase based on the sensing the respiratory muscle movement exhibited strong real-time performance. Compared to traditional airflow-based respiratory phase detection, the proposed method showed a lead times ranging from 33 to 210 ms [(88.3 ± 47.9) ms] for expiration switched into inspiration and 17 to 222 ms [(92.9 ± 63.8) ms] for inspiration switched into expiration, respectively. When this system is applied to trigger the output of the ventilator, it will effectively improve the patient-ventilator synchrony and facilitate the ventilation treatment for patients with respiratory diseases.
