| 基于CAN现场总线的智能温度采集模块的设计与实现 |
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| 引用本文： | 王红旗,李辉,陶慧.基于CAN现场总线的智能温度采集模块的设计与实现[J].计算机测量与控制,2006,14(1):125-127. |
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| 作者姓名： | 王红旗 李辉 陶慧 |
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| 作者单位： | 河南理工大学,电气工程与自动化学院,河南,焦作,454000;河南理工大学,电气工程与自动化学院,河南,焦作,454000;河南理工大学,电气工程与自动化学院,河南,焦作,454000 |
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| 摘 要： | 介绍了使用CAN现场总线独立控制器SAJ1000和总线收发器PCA82C250及热偶信号调理专用芯片AD595设计智能温度采集模块的方法;该温度采集模块不再需要冷端补偿、调零、电压放大和线性化等繁琐的工作，并可以直接测量热电偶输出的mV级电压信号；经调试，该模块已稳定可靠地用于实验室过程温度的测量中。
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| 关 键 词： | 热电偶 AD转换 CAN现场总线 |
| 文章编号： | 1671-4598（2006）01-0125-03 |
| 收稿时间： | 2005-05-15 |
| 修稿时间： | 2005-06-16 |
Design and Realization of Circuit of Intelligent Sampling for Temperature Based on CAN |
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| Wang Hongqi,Li Hui,Tao Hui.Design and Realization of Circuit of Intelligent Sampling for Temperature Based on CAN[J].Computer Measurement & Control,2006,14(1):125-127. |
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| Authors: | Wang Hongqi Li Hui Tao Hui |
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| Affiliation: | Electricity Engineering and Automation Institute, Henan Polytechnic University, Jiaozuo 454000, China |
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| Abstract: | The method of design of the intelligent temperature sampling device by use of SJA1000, an independent CAN bus controller , and PCA82C250, a CAN bus receiver and transmitter, and AD595, a special conditioning chip particularly for the thermocouple is introduced. A series of tired processes, such as cold end compensation, adjusting to zero, voltage amplifying and llnearization are not necessary any more, and this device can directly measure voltage on mV scale of the thermocouple output. By debugging, the device has been used stably and reliably in process in the laboratory. |
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| Keywords: | thermoeouple AD converter CAN field Bus |
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