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    • 48. 发明授权
    • APPARATUS AND METHOD FOR DRIVING A SENSOR IN A VENTILATOR
    • EEREM通风机中的GERÄTUND VERFAHREN ZUM ANTREIBEN EINES传感器
    • EP1796767B1
    • 2011-12-14
    • EP05776294.0
    • 2005-09-01
    • RIC Investments, LLC.
    • CEWERS, Göran
    • A61M16/00
    • A61M16/0051A61M16/0063A61M16/024A61M16/101A61M16/161A61M2016/0027A61M2016/0039A61M2016/0042A61M2016/1025A61M2205/3368
    • A ventilator includes a sensor to monitor a characteristic associated with the delivery of gas to the patient, such as pressure. A sensor power supply (100, 130) is feeding a sensor in the form of a Wheatstone bridge. A first end (104) of the bridge is coupled to a first positive voltage source (112, 142) and a second end (116) is coupled to a second positive voltage source (118, 156, 180). A capacitor (120) is coupled to the second end of the bridge. A controller (50) controls the first and the second positive voltage sources so as to (a) disable the sensor by causing the first positive voltage source to provide substantially zero voltage to the first end of the Wheatstone bridge and by causing the second positive voltage source to provide a positive voltage to the second end of the capacitor, and to (b) enable the sensor by causing the first positive voltage source to provide a positive voltage to the first end of the Wheatstone bridge and by causing the second positive voltage source to provide a decreasing voltage to the second end of the capacitor.
    • 呼吸机包括用于监测与向患者输送气体相关联的特性的传感器,例如压力。 传感器电源(100,130)以惠斯通电桥的形式馈送传感器。 桥的第一端(104)耦合到第一正电压源(112,142),第二端(116)耦合到第二正电压源(118,156,180)。 电容器(120)耦合到桥的第二端。 控制器(50)控制第一和第二正电压源,以便(a)通过使第一正电压源向惠斯通电桥的第一端提供基本零电压并且通过使第二正电压 源极,以向电容器的第二端提供正电压,并且(b)通过使第一正电压源向惠斯通电桥的第一端提供正电压并且通过使第二正电压源 以向电容器的第二端提供降低的电压。