| 用于电阻类传感器校准的电子合成电阻 |
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| 引用本文： | 张天宏,丁毅,黄向华.用于电阻类传感器校准的电子合成电阻[J].传感器与微系统,2004,23(10):53-55,59. |
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| 作者姓名： | 张天宏 丁毅 黄向华 |
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| 作者单位： | 南京航空航天大学,能源与动力学院,江苏,南京,210016 |
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| 基金项目： | 航空科学基金资助项目(01C2015) |
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| 摘 要： | 利用运算放大器和数模转换器等电路构成单口网络,通过编程得到输入电压及电流的比值,获得期望大小的合成电阻。这种合成电阻可以用于对电阻类传感器的测试电路或仪器的自动校准。提出了在提高电阻合成准确度、扩展桥压范围、提高极性适应能力和多通道之间的隔离等方面的解决办法,并对实验结果进行了分析,给出了实用的修正方法。
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| 关 键 词： | 电子合成 电阻模拟 传感器 仪器校准 |
| 文章编号： | 1000-9787(2004)10-0053-03 |
Electronic synthesized resistor for calibration of resistor-type sensors |
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| ZHANG Tian-hong,DING Yi,HUANG Xiang-hua.Electronic synthesized resistor for calibration of resistor-type sensors[J].Transducer and Microsystem Technology,2004,23(10):53-55,59. |
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| Authors: | ZHANG Tian-hong DING Yi HUANG Xiang-hua |
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| Abstract: | A synthesized resistor can be achieved by a single port network,which is constructed by operational amplifiers and a digital to analog converter,because the ratio of input voltage and current can be controlled by programming.Such synthesized resistors can be applied in measuring circuet and automatic calibration for instruments of resistor-type sensors.Several key problems of resistor synthesis are studied: how to improve the accuracy of synthesized resistor,how to expand the voltage scope of resistor's application circuits,how to make the synthesis circuits adapted for positive or negative voltage and how to develop a multi-channel synthesis circuits in one board.The experimental results are also discussed,and therefore a practical revised method is given. |
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| Keywords: | electronic synthesis resistor emulation sensor instrument calibration |
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