uCOS-II

本设计以单片机 MSP430F149 作为控制核心，实现超声波测距。系统由以下部分组成：单片机最小系统模块、超声波测距模块、温度测量模块、LCD 显示模块。超声波测距模块采用超声波传感器，发射管自动发送 40KHZ 的方波，当其检测到障碍物时就会返回信号，利用时间差测出距离。温度测量模块采用温度传感器 DS18B20。最后将所测量的数据在显示器上显示出来。整个系统实现功能为根据温度的不同选择相应的声速来实现距离的测量。

200个Multisim仿真实例，内含有200个Multisim仿真实例。

This program simultes the BER performance with a single and multiple users

量子图像加密算法仿真实现，包含经典图像仿真与量子图像仿真实现代码

matlab程序基于fdtd方法计算物质组成及结构的程序，程序语言简单易懂，适合初学者(Matlab based on FDTD method to calculate the material composition and the structure of the program, the program language easy to understand, suitable for beginners)

有关Matlab课件，效果好值得借鉴，希望大家喜欢(On the Matlab software, the effect is worth learning well, I hope you like)

说明：  巡线用,是中鸣机器人的程序，用于中鸣超级轨迹赛（五光电）。(Patrol line is the program of Zhongming Robot, which is used in Zhongming Super Track Competition (five photoelectric).)

【实例简介】文本情感分析作为NLP的常见任务，具有很高的实际应用价值。本文将采用LSTM模型，训练一个能够识别文本postive, neutral, negative三种情感的分类器。

Rayleigh Benard Convection, using a LB method

首先根据高斯白噪声频率充满整个频带的特性，通过双树复小波包变换对高斯白噪声进行分解，利用频带能量泄漏的定量分析方法，验证了双树复小波包变换具有较低的频带能量泄漏特性；其次利用双树复小波包变换逐层分解信号，对每层分解所得分量求其FFT谱的峭度，得到基于双树复小波包变换的谱峭度图，根据图中峭度最大的原则，可以自动准确的选择信号分解最佳层数和最佳分量；最后将基于双树复小波包变换的谱峭度图的故障诊断方法应用于实际工程中，对齿轮故障振动信号进行分析，选择最佳分解层数和分量后利用希尔伯特包络解调，有效准确地提取了故障特征信息，验证了方法的可行性和有效性(The parameters of a filter were determined by experience, and that has a great influence on the results of signal processing. The discrete wavelet packet transform has a larger energy leakage of frequency band, which obviously affected the results of the envelope demodulation. It is necessary to have a method with a lower energy leakage of the frequency band before envelope demodulation. The dual tree complex wavelet packet transform (DT-CWPT) was a new signal processing method that had many good qualities. Because the energy leakage of the frequency band was smaller when the signal was decomposed by a dual tree complex wavelet packet transform, the dual tree complex wavelet packet transform was used to extract the fault feature information in the field of fault diagnosis. In this paper, first, according to the characteristics of Gaussian white noise, whose frequency was full of the whole frequency band, Gaussian white noise was decomposed by a dual-tree complex wavel)