For the shortcomings of the pressure-frequency conversion circuit,which was widely used in dose monitoring systems of medical linear accelerator,the principle of Thomson balance method is simply introduced to current detection.
针对医用直线加速器剂量监测系统普遍应用的压频转换电路的缺点,介绍了汤姆逊平衡法检测电流的原理,并基于此原理提出了新的医用直线加速器剂量监测系统中的设计方法及注意事项。