Study On Relationship Between Human's Comfortableness, Effectiveness, Safety And Air Quality, Vibration Condition In Mobile Medical Equipment Compartment

The air quality and vibration condition of compartment play an important role in microenvironment of mobile medical equipment compartment, which have a significant impact on physical health, work efficiency and safety protection of medical personnel and the wounded in compartment. In order to improve the microenvironment and ensure person's safety, effectiveness, comfortableness , the relationship between human's comfortableness, effectiveness, safety and air quality, vibration in Mobile Medical Equipment Compartment is studied in this paper, considering normal condition, biology and chemistry protection condition. The indicator system of evaluation is established by analyzing the influencing factors on comfortableness of air quality in compartment under normal condition.The grade standards of comfortableness are ascertained and the method of comfortableness evaluation with grey correlation grade is brought out. With the case of emergency ambulance, the comfortableness of the standing medical personnel and the recumbent and seating wounded is studied under high temperature and high humidity condition when air-condition has worked 30min and 60min. Results show that the comfortableness grade of human in compartment is uncomfortable at beginning. The comfortableness grade of human in compartment is best comfortable and comfortable at 30min. The comfortableness is improved at 60min. Besides, the comfortableness of the recumbent wounded is better than standing medical personnel and the seating wounded.The two indicator systems of evaluation are established by analyzing the influencing factors on effectiveness of air quality in compartment under normal condition, biology and chemistry protection condition. The grade standards of effectiveness are ascertained and the method of effectiveness evaluation with fuzzy comprehensive is brought out. With the case of emergency ambulance, the effectiveness of the standing medical personnel is studied under high temperature and high humidity condition when air-condition has worked for 30min and 60min, and the effectiveness in extreme condition is also studied when temperature is rising and falling. With the case of operation shelter, the effectiveness of the medical personnel is studied under biology and chemistry protection condition. Results show that the effectiveness grade of the standing medical personnel in compartment is generally effective at beginning under high temperature and high humidity condition. When the air-condition is on, the effectiveness grade of the standing medical personnel is best effective at 30min and the effectiveness is improved at 60min. When the outside temperature is -41 , the effectiveness grade of compartment is generally effective at 30min and better effective at 40min. When the outside temperature is 46 , the effectiveness grade of compartment is generally effective at 12min, better effective at 28min. When the emergency ambulance carry and rescue the wounded passing through the biological contamination zone. The effectiveness value of whole compartment and medical personnel are more than 4 under overpressure protection when air-condition is on and off at every sampling time. The effectiveness grade is best effective and the effectiveness of medical personnel in compartment is uninfluenced. When the wounded infected by biological contamination or the patients with strong infectious disease are carried by emergency ambulance, the effectiveness of whole compartment and medical personnel are falling under negative-pressure protection when air-condition is on and off. The effectiveness value is 1 belonging to best effective at 5min. The effectiveness of the medical personnel in compartment is losed if unadopt available protection. When the VX concentration is 0.1mg/L outside the operation shelter, the doctor1 and anaesthetist is poisoned and lose the working ability in left part compartment. The effectiveness of the medical personnel is uninfluenced in right part compartment.The indicator system of evaluation is established by analyzing the influencing factors on safety of compartment air quality under biology and chemistry protection condition. The grade standards of safety are ascertained and the method of safety evaluation with pollution loss rate is brought out. With the case of emergency ambulance, the safety of the medical personnel is studied when the wounded infected by biological contamination or the patients with strong infectious disease are carried. With the case of operation shelter, the safety of the wounded and medical personnel is also studied under filtration and decontamination protection when attacked by HCN. Results show that the safety grade of whole compartment and the medical personnel are most dangerous at 5min under negative-pressure protection when air-condition is on and off. The safety of medical personnel in compartment is most threatened if unadopt available protection. When the HCN concentration is 5mg/L outside the operation shelter, human is safy except the doctor1 in left part compartment. The safety of compartment is falling when the outside HCN concentration is 20mg/L. The safety of doctor1 and anaesthetist in left part compartment is threatened while others'working ability is influenced. Under the both condition, the safety of person in right part compartment is better than the person in left part compartment.The frequency, acceleration, exposure time of vibration are analysed. The method of comfortableness evaluation for the seating and recumbent wounded is confirmed by relevant standards under compartment vibration condition. The tracked emergency ambulance with two-level damping device (rubber damper and 3-dof zero stiffeness damper) is experimented through running test under various road and speed condition. The two-level damping efficiency and ride comfortableness (included recumbent comfortableness and seating comfortableness) is analysed. Results show that the first level damping device has performed good damping efficiency between 56% and 80%. Condidering the second level damping device, the damping efficiency of recumbent is better than seating position while the recumbent comfortableness is better than seating comfortableness. The evaluation grade of recumbent comfortableness on the two sides is comfortable and generally comfortable . The recumbent comfortableness on left is better than recumbent comfortableness on right. The value of reduced comfort boundary is 0.426h～1.348h ( left seating position) and 0.175h～1.401h (right seating position). The damping efficiency of isolation type damper on left is better than the damping efficiency of impact type damper on right.