摘要
采用复杂可编程逻辑器件(CPLD)作为控制单元,设计一款驱动电路以产生线阵CCD需要的驱动信号。利用硬件描述语言(HDL)进行CPLD功能模块以及逻辑单元的设计,不仅发挥了CPLD"可编程"的特点,而且为用户提供较多的信号接口,具有较强的灵活性和稳定性,提高了CCD驱动脉冲的准确性。在介绍驱动电路工作原理的基础上,给出了驱动脉冲时序的设计方法,并通过电路测试数据验证该电路的有效性。实验结果表明:该驱动电路输出的驱动脉冲,完全满足线阵CCD的需要,整个驱动电路工作比较稳定,其输出信号具有严格的时序关系。该驱动电路可以集成到无接触测量系统中,用来产生线阵CCD所需的驱动脉冲,并且有较高的精度。
A complex programmable logic circuit （CPLD） is adopted to design a linear CCD drive circuit in order to generate drive pulse.Functional module and logic unit are designed with hardware description language,which not only can give full play to the ＂programmable＂ characteristics,but also can provide users with adequate signal interface.And the driver circuit more strong flexibility and stability,which improve the accuracy of the CCD drive timing.This paper firstly introduces the main characteristics of the drive circuit,and then gives design method for a drive pulse sequence.The drive circuit is verified through actual circuit test.The experimental results show that the design of drive circuit completely conforms to the requirements of the CCD driver sequence,and use in the actual circuit,the circuit can work properly and meet the requirements of high precision.
出处
《电子测量技术》
2014年第7期66-70,共5页
Electronic Measurement Technology
基金
杭州电子科技大学大学生创新创业训练计划项目
浙江省大学生科技创新活动计划(新苗人才计划)
