| 一种电流型二线制光照强度变送器的设计 |
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| 引用本文： | 邹观鹄,黄大庆.一种电流型二线制光照强度变送器的设计[J].国外电子元器件,2012(3):124-126. |
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| 作者姓名： | 邹观鹄 黄大庆 |
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| 作者单位： | [1]南京航空航天大学电子信息工程学院,江苏南京210016 [2]南京航空航天大学无人机研究院,江苏南京210016 |
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| 摘 要： | 现阶段对电流型二线制光照强度变送器的研究还相对较少,设计的光照强度变送器普遍存在精度不高,线性度不好,性能不够稳定,不能输出标准4~20 mA电流信号的问题。介绍了一种电流型二线制光照强度变送器的设计,其结构由光照强度转电压电路、电压范围转换电路、电压转电流电路以及稳压电源产生电路组成。实验结果表明该变送器具有精度高、线性度好、功耗低,能够稳定可靠地输出标准4~20 mA电流的特点。
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| 关 键 词： | 电流型 光照强度 二线制 变送器 高精度 |
Design of a two-wire current-light intensity transmitter |
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| ZOU Guan-hu,HUANG Da-qing.Design of a two-wire current-light intensity transmitter[J].International Electronic Elements,2012(3):124-126. |
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| Authors: | ZOU Guan-hu HUANG Da-qing |
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| Affiliation: | 1.College of Electronic and Information Engineering ,Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China; 2.UVA Research Institute ,Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China) |
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| Abstract: | The study of the two-wire current-light intensity transmitter is relatively small,and the design of it has some disadvantages,such as low precision,bad linearity,the performance is not stable enough and can＇t output standard 4-20 mA current signal. The design of a two-wire current-light intensity transmitter is described. Its structure consists of light intensity convert to voltage circuit, voltage convert to voltage circuit,voltage convert to current circuit,and power supply generation circuit. Experimental results show that the transmitter has characteristics of a high accuracy, good lincarity, low power consumption, and can be stable and output reliable standard 4-20 mA current signal. |
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| Keywords: | current-type light intensity two-wire transmitter high precision |
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