Design of SF 6 measurement system based on Visual TFT
10.3760/cma.j.cn121382-20231010-00608
- VernacularTitle:基于Visual TFT的SF 6气体测量系统设计
- Author:
Yi ZHANG
1
;
Xiaofeng SHENG
;
Yongzhen LI
;
Xia ZHANG
;
Wei WANG
;
Chunyuan ZHANG
;
Zhenglong CHEN
Author Information
1. 上海理工大学健康科学与工程学院，上海 200093
- Keywords:
SF 6;
Functional residual gas volume;
Gas measurement systems
- From:
International Journal of Biomedical Engineering
2023;46(6):529-535
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To design a Visual TFT-based SF 6 gas measurement system. Methods:Based on Visual TFT, an SF 6 gas measurement system is designed, including system hardware design and system software design. The system hardware mainly includes gas sensors, a Visual TFT display, a signal processing circuit, and a power supply circuit. The system software mainly includes data acquisition, data display, SF 6 monitoring system, and alarm program. The Visual TFT display is controlled by Keil code to display other parameters such as gas flow rate, concentration, and waveform, and calculate the error (? E). The measurement system extracts the gas flow rate and concentration data through the waveform graph and gets the change curve of functional residual gas volume (FRC) data. Results:The proposed Visual TFT-based SF 6 gas measurement system can detect SF 6 with an arithmetic mean value of concentration ? E of 8.906%, which is less than 10% of full scale and meets the design requirements. Conclusions:The Visual TFT-based SF 6 gas measurement system can monitor the concentration of SF 6 gas in real-time, which helps to control the release of SF 6 gas and reduce the impact of inert gas emission on the human body under test. At the same time, the system has an intuitive display interface and alarm function, which helps healthcare workers diagnose and treat lung and respiratory diseases more conveniently and quickly, and improves the efficiency and safety of healthcare workers.
