Design of wide dynamic range current measurement card

doi:10.1117/12.3032793

	Design of wide dynamic range current measurement card
	Guo, Jingxi; Zhang, Denghong
	2024
会议名称	3rd International Conference on Electronic Information Engineering and Data Processing, EIEDP 2024
会议录名称	Proceedings of SPIE - The International Society for Optical Engineering
卷号	13184
会议日期	March 15, 2024 - March 17, 2024
会议地点	Kuala Lumpur, Malaysia
会议录编者/会议主办者	Academic Exchange Information Centre (AEIC)
出版者	SPIE
摘要	Beam intensity is a fundamental parameter of beam flow. The beam intensity measurement system of the Heavy Ion Medical Machine (HIMM) requires a wide dynamic range current detection card to monitor the beam intensity. The card will receive the current signal and integrate it within the fully differential current frequency converter (FDCFC). A voltage comparator is employed to check the output against the threshold and control the current integrate direction. The input current signal is transformed into a TTL signal by integrating and changing current direction between the differential pairs. The card utilizes a high slew rate differential amplifier and a multi-switch, and the current is integrated in different branches of pairs. The laboratory tests show the following results: The fully differential current frequency converter performs effectively, with an input dynamic range covering 1nA to 10mA, a nonlinear error of less than 15%, and an output frequency ranging from 100Hz to 200kHz, meeting all the design goals. © 2024 SPIE.
关键词	Differential amplifiers Electric current measurement Heavy ions Beam intensity Current frequency Current signal Differential current Dynamic range Fully differential Fully differential amplifiers Integrate capacity QF converter Wide dynamic range
DOI	10.1117/12.3032793
收录类别	EI
语种	英语
EI入藏号	20243216819976
EI主题词	Frequency converters
EI分类号	713.1 Amplifiers ; 942.2 Electric Variables Measurements
原始文献类型	Conference article (CA)
EISSN	1996-756X
ISSN	0277-786X
文献类型	会议论文
条目标识符	https://ir.nwnu.edu.cn/handle/39RV6HYL/98795
专题	实体学院_物理与电子工程学院
通讯作者	Zhang, Denghong
作者单位	Northwest Normal University, Gansu, Lanzhou; 730070, China
第一作者单位	西北师范大学
通讯作者单位	西北师范大学
第一作者的第一单位	西北师范大学
推荐引用方式 GB/T 7714	Guo, Jingxi,Zhang, Denghong. Design of wide dynamic range current measurement card[C]//Academic Exchange Information Centre (AEIC):SPIE,2024.