| MSP430F449在新型流量计中的应用 |
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| 引用本文： | 王守志.MSP430F449在新型流量计中的应用[J].微计算机信息,2007,23(29):92-93. |
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| 作者姓名： | 王守志 |
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| 作者单位： | 临沂师范学院工程学院,山东临沂,276005 |
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| 摘 要： | 提出了采用三值梯形波励磁方式的电磁流量计设计。构建了采用MSP430F449单片机的电磁流量计样机。试验表明，三值梯形波励磁方式在小流速阶段，相对误差在-4．8％以内，小于矩形波励磁方式的-6．9％，可以减弱微分干扰，提高测量准确度。文中对系统的软硬件设计作了详细的介绍。
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| 关 键 词： | 电磁流量计 梯形波励磁方式 |
| 文章编号： | 1008-0570（2007）10-2-0092-02 |
| 修稿时间： | 2007-08-23 |
Application of MSP430F449 in New Flowmeter |
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| WANG SHOUZHI.Application of MSP430F449 in New Flowmeter[J].Control & Automation,2007,23(29):92-93. |
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| Authors: | WANG SHOUZHI |
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| Abstract: | Electromagnetic flow meter adopting three-value trapezoidal waveform exciting mode is proposed in this paper. Flowmeter prototype was built based on MSP430Fd49 MUC. Experiments showed that the relative error based on three-value trapezoidal waveform exciting mode is less than -4.8%,while relative error based on low frequency square waveform exciting mode is less than - 6.9%.The proposed scheme can minimize differential interference and improve measurement accuracy. The software and hardware design of the system is introduced in detail. |
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| Keywords: | MSP430F449 |
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