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便携式X射线机为保障特种设备的安全发挥巨大作用,是典型的用低压电产生高管电压的检测设备,管电压可高达400kV。控制精度及稳定性至关重要。文中详细分析便携式X射线机管电压、管电流的测量原理,提出基于以上原理的一种便携式X射线机管电压、管电流的计算机测控方法,同时采用可控硅整流实现管电压控制、IGBT变频实现管电流控制。试验数据证明:其管电压、电流控制精度较高,稳定性好,能满足工程需求。该射线机具有良好市场前景。
Portable X-ray equipment to protect the safety of special equipment to play a huge role, is a typical high voltage with low voltage to produce high-voltage detection equipment, tube voltage up to 400kV. Control accuracy and stability are paramount. In this paper, a detailed analysis of portable X-ray tube voltage and tube current measurement principle, based on the above principle of a portable X-ray tube voltage, tube current computer measurement and control methods, while the use of SCR rectifier tube voltage control, IGBT inverter Achieve tube current control. Test data show that: the tube voltage and current control of high precision, good stability, to meet the engineering needs. The ray machine has a good market prospects.