Design and implementation of medical diagnostic X-ray machine's tube current testing system

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 accurately, in order to ensure safety and reliable operation of Medical X-ray machine, improve the corresponding level of digital detection, so designing a verification 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 analysing, 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. (authors)