遥控遥测电离计

Ionization Gage with Remote Control and Measurement

遥控遥测电离计是用单片机控制的真空计［１］的应用之一，在有放射性的空间，观察 者离现场有时有２５０ｍ的距离，传统的方法是用长电缆线将规管与控制单元连起来［２］ 其缺点是大的灯丝电流要求很粗的电缆线，长的屏蔽线使放大器的时间常数增大．用单 片机控制的真空计可将压强数值用单片机进行传送．２５０ｍ的距离只用很细的电缆线即 可完成遥控遥测任务．

This ionization gage with remote control and remote measurement is one application of vacuum gage controlled by single unit, in the radiative space, sometimes there is 250m from observer to the field, the traditional method is that the gage and control unit are connected with long cable, its disadvantage is that the big current of filament requires thick cable, the time constant of amplifier is increased by the long shielding wire. The pressure value can be transfered by the single unit via the vacuum gage. With use of very thin cable, the remote control and remote measurement can be done at the distance for 250m.