| 基于单片机的高精度多量程电容测试仪的设计 |
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| 引用本文： | 宋剑英. 基于单片机的高精度多量程电容测试仪的设计[J]. 仪表技术, 2012, 0(4): 27-30 |
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| 作者姓名： | 宋剑英 |
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| 作者单位： | 青岛职业技术学院,山东青岛,266555 |
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| 摘 要： | 利用555定时器外接阻容元件构成多谐振荡器,通过单片机对多谐振荡器产生的矩形脉冲计数和数据处理来实现电容的智能化测量。利用电子开关4051选取多路阻容元件进行了多量程扩展。该测试仪测量精度较高,量程能自动切换。
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| 关 键 词： | 电容 多谐振荡器 单片机 |
Design of High-precision and Multi-range Capacitance Tester Based on SCM |
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| SONG Jian-ying. Design of High-precision and Multi-range Capacitance Tester Based on SCM[J]. Instrumentation Technology, 2012, 0(4): 27-30 |
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| Authors: | SONG Jian-ying |
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| Affiliation: | SONG Jian-ying(Qingdao Technical College,Qingdao 266555,China) |
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| Abstract: | 555 timer with external resistance and capacitance components is used to constitute multivibrator.SCM is adopted to count the rectangular pulse produced by multivibrator and data processing realizes the intellectualized measurement of capacitance.Through the electronic switch 4051 automatic choosing different resistance and capacitance,the expansion of measuring range is realized.This test system has high precision and range can automatically switch. |
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| Keywords: | capacitance multivibrator SCM |
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