In order to improve the coal mine ventilator supervisory and monitoring system, the intelligent unit of sensor is designed based on AT89C52.
为了改进煤矿风机监测系统，设计了基于AT 89c52的传感器智能转换单元。
2
System's analog variable, switch variable collect unit and switch variable output unit can monitor and control some equipment, such as air-condition, ventilator and fire alarm equipment.
系统的模拟量及开关量采集单元和开关量输出单元可以监控空调、通风机、火警等装置。
3
Objective to investigate the occurrence rate, mortality and distribution of pathogens of ventilator associated pneumonia (VAP) in surgical intensive care unit (ICU).