速度转速数字测量系统设计(AT89C51,含CAD电路图)(任务书,开题报告,外文翻译,论文说明书8600字,CAD电路图1张)
摘 要
本次设计顺应了数字化的趋势。
关键词:转速测量;霍尔传感器;单片机
Design of speed digital measuring system
Abstract
This design conforms to the digital trend, the use of digital measurement methods, in order to further improve the accuracy of the measurement, but also with the core of the system to test the system faster, more widely applicable.
In this design, I use the frequency measurement method to design the hardware circuit, the monolithic integrated circuits sensor is UGN3144, the sensor measurement signal after stable, amplification, shaping input to the microcontroller. The MCU is AT89C51, including the main control circuit, driving circuit, display circuit, reset circuit, clock circuit and keyboard circuit. Software components can be programmed using Keil. Electrical schematic can be used Protel software to connect all the circuit components to produce. Finally, the basic error analysis is carried out. The test shows that the system has high precision and meets the design requirements.
Keywords: monolithic integrated circuits; speeds measure; Hall element
目 录
摘要.....................................................Ⅳ
第一章 绪论..............................................1
第二章 转速测量系统介绍..................................2
2.1 转速测量普通步骤..................................2
2.2 转速测量原理......................................4
2.2.1 测频法“M法”................................4
2.2.2 测周期法“T法”..............................4
2.2.3 测频测周法“M/T法”..........................5
第三章 系统硬件设计......................................6
3.1 转速测量原理的选择................................6
3.2 霍尔传感器.........................................6
3.2.1 霍尔效应......................................6
3.2.2 霍尔元件......................................8
3.2.3 UGN3144霍尔开关元件..........................9
3.3 单片机............................................12
3.3.1 AT89C51主控电路..............................12
3.3.2 驱动器.......................................13
3.3.3 显示电路.....................................14
3.3.4 复位电路.....................................16
3.3.5 时钟电路.....................................17
3.3.6 键盘电路.....................................18
第四章 软件系统设计.....................................19
4.1软件设计的总体思路.................................19
4.2 子程序设计........................................20
4.2.1 转速计算程序.................................20
4.2.2 二-十进制转换程序............................21
4.2.3 显示程序.....................................22
第五章 转速分析.........................................23
5.1 速度范围..........................................23
5.2 测量误差..........................................23
总结.....................................................24
参考文献.................................................25