| 引用本文： |
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贺斌,陈华,石旭.数字共焦显微仪压电陶瓷物镜驱动电源设计[J].广西科学院学报,2009,25(4):294-296. [点击复制]
- HE Bin,CHEN Hua,SHI Xu.The Design for Digital Confocal Microscope Piezoelectric Ceramic Objectives Driving Power Supply[J].Journal of Guangxi Academy of Sciences,2009,25(4):294-296. [点击复制]
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| 摘要: |
| 采用模块化设计思想,设计一种数字共焦显微仪压电陶瓷物镜驱动电源,并进行测试。该电源以AT89S52单片机作为主控芯片,控制12位D/A转换器MAX538,再将D/A转换的输出电压用运算放大器HA17741构成的比例放大电路进行小电压放大,用来控制高压DC-DC转换器BYH12-200S01。电源测试时,输出电压能在16~200V内数控可调,并且精度达60mV,纹波电压小于20mV,能够满足压电陶瓷物镜驱动的电压设计要求。 |
| 关键词: 直流电压源 单片机 D/A转换 高精度 |
| DOI： |
| 投稿时间：2009-07-05 |
| 基金项目:广西大学科学基金项目(X071005),广西高校人才小高地建设创新团队计划项目([2007]71),南宁市科学研究与技术开发计划(200801028A),广西科学研究与技术开发计划项目(200907)资助。 |
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| The Design for Digital Confocal Microscope Piezoelectric Ceramic Objectives Driving Power Supply |
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HE Bin, CHEN Hua, SHI Xu
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| (School of Computer, Electronics and Information, Guangxi University, Nanning, Guangxi, 530004, China) |
| Abstract: |
| This system uses Modular Designing idea and designs a Digital Confocal Microscope Piezoelectric Ceramic Objectives Driving power supply,and it has been tested. The power supply takes the single chip microcomputer system as a core, controlling the 12 bit D/A switching circuit, then the D/A conversion's Output Voltage is passed to Proportional amplifier composed of Operational Amplifier HA17741 for Small voltage amplification,and is used to control high voltage DC-DC converter BYH 12-200S01.The power supply is tested and its output voltage can range from 16 to 200V and it can be numerical controlled,then,the Accuracy reach 60 mV, Ripple voltage is less than 20mV,so it meets the designed requirements of Piezoelectric Ceramic Driving. |
| Key words: DC power supply single chip microcomputer D/A conversion high precision |
