Chemical Defense Physiological Signal Monitoring During Combat And Training Process

Chemical defense in the training process, there will be exercise too strong or lack of exercise, etc., not only can not achieve the purpose of practice, but also harm the body. Body temperature, oxygen saturation and respiratory rate is a measure of the body’s vital signs, basic indicators of physiological parameters through these three dynamic real-time monitoring of physiological signals can help to understand the intensity of training soldiers and can guidance on training soldiers.Based on the chemical defense of gas masks to transform the physiological signal detection apparatus installed on gas masks, to collect the body temperature,oxygen saturation and respiratory rate, it can transfer the body temperature, oxygen saturation and respiratory signals to the host computer for further analysis,processing of physical activity and exercise intensity chemical defense of real-time monitoring. Biomedical sensor mounted directly on the gas mask, the soldiers do not need carry other physiological signal detection instrument can achieve detection of physiological signals,it can shorten the preparatory work before chemical defense operations and will not affect the soldiers activity.The hardware of the system is based on the MSP430 microcontroller, including temperature detection module, oxygen detection module, breathing detection module,a power supply module and wireless communication module. The temperature detected by the NTC thermistor temperature sensor; oxygen detection using the ear clip type oxygen probe, dynamic detection of human blood oxygen saturation; in the respiratory rate detection, there is no use in traditional testers install multiple electrodes the bioelectrical impedance measurement method, but use the latest generation of MEMS sensor chip is installed in a gas mask inlet gas flow rate sensor for detecting human breathing, give full consideration to the convenience and comfort of soldiers problem.In the terms of Software design,the thesis introduces the flow chart each module. The system complete the body temperature calculation, respiration ratevalues through the MCU software programming and achieve calculate oxygen saturation by PC software. the system is also designed based on nRF905 wireless transmission module, and to achieve a wireless communication with the host computer. The system also use LabVIEW software to achieve real-time monitoring of body temperature, oxygen saturation and respiration.Finally, experiments show that the system can achieve stable,reliable for chemical defense body temperature, oxygen saturation, respiration rate and achieve the desired design objectives.