4-2

说明：  改程序实现的是一个扫频仪，里面包含了几个小程序(Reform program implementation is a Sweeper, which contains several small programs)

声学系统测试，生成impulse noise 和non-Gaussian noise混和信号(Acoustic system testing, generate impulse noise and non-Gaussian noise mixed signals)

说明：  本代码编制测距传感器的串口通讯接口VI；通过波形图表显示连续读取的测距-时间曲线，并将有效测量范围外的数据滤除。(This code compiles the serial communication interface VI of ranging sensor, displays the continuous read ranging-time curve through waveform chart, and filters out the data outside the effective measurement range.)

实现上位机与台达PLC的MODBUS RTU通信,输入命令和地址后直接可以用(comulication for pc and PLC)

说明：  对图像进行腐蚀、膨胀、开运算、闭运算、细化等操作(Corrosion, expansion, opening, closing and thinning of images)

说明：  labview产生波形并显示，对波形图表的曲线控制(Labview generates waveform and displays it, and controls the curve of waveform chart)

关于如何使用NI公司USB-6251数据采集卡的参考文献(Companies on how to use NI USB-6251 data acquisition card References)

实现labview的pwm控制，产生占空比可调的PWM波形(Labview realize the pwm control, adjustable duty cycle of the PWM waveform generated)

说明：  本项目是以 LabVIEW 为开发平台的环境监控与预警系统，实现了对温度，烟雾和电压电流等信号的实时采集、记录、存储和回放等功能程序的模块化设计，从而达到环境监控的目的。(This project is an environmental monitoring and early warning system based on LabVIEW. It realizes the modular design of functions such as real-time acquisition, recording, storage and playback of signals such as temperature, smoke and voltage and current, thus achieving the purpose of environmental monitoring.)

labview实例教程 LABVIEW基本知识和仿真 仿真程序 (LabVIEW examples tutorial)