| 基于MSP430F4250的可编程高精度两线制显示模块设计 |
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| 引用本文： | 梁伟.基于MSP430F4250的可编程高精度两线制显示模块设计[J].化工自动化及仪表,2010,37(4):54-56,60. |
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| 作者姓名： | 梁伟 |
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| 作者单位： | 绍兴文理学院,电工电子实验教学中心,浙江,绍兴,132000 |
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| 摘 要： | 以MSP430F4250为核心,配合高效率的升压式DC/DC微功率电源,设计了一款高精度的两线制显示模块。使用专门设计的段式LCD,支持-1999~9999范围的线性或者平方根数字显示,支持℃、%、Pa、kPa、MPa、m及m3等多种物理量的显示。在4~20 mA供电时,精度优于0.03%。工作仅需2.2 V低电压差,同时能够为LCD提供高亮度背光。
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| 关 键 词： | 两线制显示模块 微功率电源 低成本 高精度 低电压差 |
Design of Programmable High-precision Two-wire Display Module Based on MSP430F4250 |
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| LIANG Wei.Design of Programmable High-precision Two-wire Display Module Based on MSP430F4250[J].Control and Instruments In Chemical Industry,2010,37(4):54-56,60. |
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| Authors: | LIANG Wei |
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| Affiliation: | LIANG Wei(Electronics Experiment Teaching Demonstration Center,Shaoxing University,Shaoxing 312000,China) |
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| Abstract: | asing on MSP430F4250 display module and step-up DC/DC micro-power supply,a two-wire LCD display panel was designed to display linear signal range from 1999-9999 or the square root one,units and measurement symbols such as ℃、%、Pa、 kPa、MPa、m and m3.The display precision reached 0.03% above when the power supply current changed at 4~20mA.It can work with a voltage difference of 2.2V and give high backlighting. |
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| Keywords: | two-wire display module micro-power supply low-cost high precision low voltage difference |
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