基于dsp的机械转速检测.docx

word文档可编辑 word文档可编辑 摘要 转速的检测是机械行业中必备的一项技术，转速的检测也应用到机械行业的各个领域，例如，飞机，电机，电扇，造纸，塑料，化纤，洗衣机，汽车，轮船，等。 本设计研究的题目是在传统的转速基础上，采用电涡流传感器与DSP技术相结合的一种非接触的转速测量系统。转速测量系统能够直接的测量转速，并且直观的显示在液晶显示器上，可以有效的帮助工作人员实时监测转速信息并作出及时的调整。 本设计主要是基于DSP的机械转速的检测与显示系统，分为软件和硬件两个部分，硬件主要是预处理电路，软件主要是DSP的捕获单元的设置和液晶显示程序。整个系统用到的主要是电涡流传感器，DSP最小系统，LCD1602液晶显示器。本设计主要方案是由电涡流传感器检测转速信息并且以脉冲信号的形式输出，经由预处理电路进行转换波形和稳定电压然后再将2.4v左右的方波信号由DSP最小系统的捕获引脚输入，捕获单元进行上升沿捕获并且进行计数锁存。在进行处理后有液晶显示器显示出转速大小，其结果精确到小数点后三位。 根据国内外转速监测系统的现状，本设计主要做出了比较贴近实际的设计，并且高精度的显示转速信息，在工业中实用性很强。 关键词：电涡流；旋转机械；捕获单元；上升沿 Abstract Speed detection technology is necessary in the machinery industry, speed detection is applied to various fields, such as mechanical industry, aircraft, motor, electric fan, paper, plastic, chemical fiber, washing machine, automobile, ship, etc.. The design of the study is on the basis of traditional speed, a non-contact speed measurement system using eddy current sensor and DSP technology combined. Speed measurement system can measure the speed directly, and intuitive display on the LCD monitor, can effectively help the staff real-time monitoring speed information and make timely adjustment. This design is mainly for detection of DSP mechanical speed and display system based on, is divided into two parts of software and hardware, hardware is mainly pre-processing circuit, software is mainly set capture unit of DSP and LCD display program. The system mainly use the eddy current sensor, DSP minimum system, LCD1602 liquid crystal display. This design is mainly composed of eddy current sensor detecting speed information and outputs pulse signal pretreatment circuit, through the switching waveform and voltage stability and then around 2.4V square wave signal captured by a pin input DSP minimum system, capture unit capture and rising edge counting latch. In the treatment the LCD display speed size, the result is accurate to three decimal places. According to the present situation of speed monitoring system at home and abroad, the design of t