| 定频调幅式电涡流传感器电路及其在防水数显卡尺中的应用 |
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| 引用本文： | 邵爱霞,赵辉,刘伟文.定频调幅式电涡流传感器电路及其在防水数显卡尺中的应用[J].计算机测量与控制,2005,13(5):508-510. |
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| 作者姓名： | 邵爱霞 赵辉 刘伟文 |
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| 作者单位： | 上海交通大学,信息检测技术及仪器系,上海,200030;上海交通大学,信息检测技术及仪器系,上海,200030;上海交通大学,信息检测技术及仪器系,上海,200030 |
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| 摘 要： | 为了进一步提高电涡流位移传感器的响应速度和减少功耗，提出了一种采用皮尔斯晶体振荡器的定频调幅式驱动电路。利用Pspice仿真软件对振荡电路的参数进行优化，并在防水数显卡尺中的应用进行了试验研究。仿真研究和试验结果表明，定频调幅电路具有响应快、功耗低、稳定性好的突出特点，完全可以满足数显卡尺的要求，并可以用于其他便携式测量设备。
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| 关 键 词： | 电涡流传感器 晶体振荡器 调幅 防水数显卡尺 |
| 文章编号： | 1671-4598(2005)05-0508-03 |
| 修稿时间： | 2004年8月23日 |
Crystal Oscillator Circuit of Eddy Current Sensor and Its Application in Liquid Resistant Digital Caliper |
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| Shao Aixia,Zhao Hui,Liu Weiwen.Crystal Oscillator Circuit of Eddy Current Sensor and Its Application in Liquid Resistant Digital Caliper[J].Computer Measurement & Control,2005,13(5):508-510. |
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| Authors: | Shao Aixia Zhao Hui Liu Weiwen |
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| Abstract: | To improve the respond speed and reduce power cost, a new driving circuit for the eddy current sensor is introduced by means of Pierce crystal oscillator. Simulated with the help of Protel99SE, and the parameters in this circuits have been optimized. Elementary research on the area-variable eddy current sensors has been done. Also, experiments concerning with the feasibility of implementing this theory into the liquid resistant digital caliper have been completed. Compared with the frequency-modulated circuits, amplitude-modulated circuits are superior in many aspects. For instance, this kind of circuits respond more rapidly, consume less power with high stability, so they can be applied into the portable measurement appliance. |
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| Keywords: | eddy current sensor (ECS) crystal oscillator amplitude output liquid resistant digital caliper |
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