医用诊断X光机管电流测试系统的设计与实现  

Design and Implementation of Medical Diagnostic X-ray Machine's Tube Current Testing System

作　　者：黄平[1] 方方[1] 刘志宏[2] 

机构地区：[1]成都理工大学,四川成都610059 [2]中国测试技术研究院,四川成都610021

出　　处：《核电子学与探测技术》2011年第7期827-830,共4页Nuclear Electronics & Detection Technology

摘　　要：X光机管电流作为控制X射线强度的重要参数,已被包含在JJG 744-2004《医用诊断X射线辐射源》国家计量检定规程中。随着数字诊断治疗水平的不断发展,传统电流表已不能准确测量X光机管电流与曝光时间,为了保障医用X光机安全可靠运行,提高与之相应的数字化检测水平,设计验证了一套包含高速ADC与FPGA结合的数字化采样技术、电流互感器与蓝牙技术的非介入式管电流测试系统,该系统在测量参数多样化、数据分析准确性方面优势明显,较符合X光机管电流特征,具有测量精度高、重复性好等优点,满足国家检定规程要求。As an important parameter,Medical X-ray tube current control the X-ray intensity,which has been included in the JJG 744-2004 ＂Medical Diagnostic X-ray radiation sources＂ in the state verification procedures.With the continuous development of the digital diagnosis and treatment,traditional ammeter is not able to measure the X-ray tube current and exposure time accuratly,in order to ensure safety and reliable operation of Medical X-ray machine,improve the corresponding level of digital detection,so designing a verifaction of non-intrusive system of tube current,which include FPGA combination of high speed ADC digital sampling technology,current transformers and Bluetooth technology.The system has obvious advantages on the diversification of measured parameters and the accuracy of data analysising,has more in line with the characteristics of tube current.At the same time with high accuracy and good repeatability,the system meet national requirements of testing procedures.

关 键 词：管电流 非介入测量 电流互感器 蓝牙 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]