Calculating method of narcotic dosage of anaesthesia machine

The invention discloses a calculating method of narcotic dosage of an anaesthesia machine. The method comprises the following steps that the concentration of anesthetic gas and the flow rate of mixed gas are measured, and the measurement time is recorded; according to the concentration of the anesthetic gas, the flow rate of the mixed gas and the measurement time, the gaseous narcotic dosage is calculated; and the type of the anesthetic gas is identified, and a main controller calculates the liquid narcotic dosage corresponding to the gaseous narcotic dosage according to a gas molar volume calculating method. With the adoption of the method, the gaseous narcotic dosage in the whole anesthesia process can be accurately calculated, the errors caused by manual calculation are avoided, and finally, the accuracy and the precision of the calculation result of the liquid narcotic dosage are effectively improved. 本发明公开了一种麻醉机的麻醉药用量计算方法，包括步骤：测量麻醉气体浓度和混合气体流量，并记录测量时间；根据麻醉气体浓度、混合气体流量和测量时间，计算气态麻醉药用量；识别麻醉气体种类，所述主控制器根据气体摩尔体积