| 基于MC33991的车速表设计 |
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| 引用本文： | 王春艳.基于MC33991的车速表设计[J].汽车电器,2007(12):14-16,19. |
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| 作者姓名： | 王春艳 |
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| 作者单位： | 山东工会管理干部学院,山东,济南,250100 |
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| 摘 要： | MC33991是飞思卡尔半导体公司生产的专用于仪表的两相步进电机驱动器，可以灵活地驱动控制步进电机并能及时反馈步进电机的工作状态，适用于设计汽车指针式仪表。本文介绍MC33991的特点和使用方法，并利用MC33991和微控制器MC68HC908GRl6设计了汽车车速表。详细阐述车速传感器的信号调理和MC33991与微控制器的接口电路，以及车速在仪表盘上对应位置的计算。
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| 关 键 词： | 车速表 步进电机 集成驱动电路 MC33991 微控制器 |
| 文章编号： | 1003-8639（2007）12-0014-03 |
| 收稿时间： | 2007-08-06 |
Design of Speedometer Based on MC33991 |
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| WANG Chun-yan.Design of Speedometer Based on MC33991[J].Auto Electric Parts,2007(12):14-16,19. |
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| Authors: | WANG Chun-yan |
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| Abstract: | The MC33991 is a biphase step motor driver the motor and feedback its working state in time specially for produced by Freescale Semiconductor designing the automotive instrumentation Inc., can drive systems. With its characteristics and the method introduced, the MC33991 and the microcontroller MC68HCg08GR16 are adopted to design a speedometer here. The speed sensor pulse modulating circuit, the MC33991 and MCU interface circuit and the calculating method of speed on its corresponding static position are also elaborated here. |
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| Keywords: | MC33991 |
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