本设计基于嵌入式技术,利用STM32芯片、传感器、 显示模块、WIFI模块和云服务器,设计一个智能药盒.其功能是管理者放入定量药品后药盒自动上锁,服药时间到药盒发出语音提示并自动开锁,用户取出定量药品盖上盒盖就自动上锁,防止用户忘记或过多服药,同时取药信息上传服务器,用户亲属或管理员可随时上网查看服药情况.该药盒可对病人服药进行监测和管理,有实用价值.

分析数字信号处理课程传统教学中面临的问题,借鉴元宇宙在教育中呈现的深度沉浸式学习体验优势,提出四维融合混合式教学模式,从教学资源、教学设计、教学实施和教学评价方面,介绍沉浸式学习体验实现四维融合混合式教学改革过程,最后通过教学改革效果说明该教学模式的有效性.

Through the analysis of kinematic and kinetic of SCARA robot and use Pro/Engineer and Adams as the modeling and simulation software,analysis the characteristic of kinematic and kinetic of SCARA robot.Introduce the process and method of 3D modeling and simulation,optimize the 3D design parameter to find the optimized design.

This article focuses on the edge detection in the simulation system in last assembly of hard disk, analyzed the template matching and the gradient algorithm, and achieved the product testing function of appearance of HD according to three commonly edge detection methods which is introduced by this article.

The paper first analyzed some problems in teaching of Specialized English in Communication Engineering at present,then through teaching practice of myself,in combination of characteristics of the course,discussed some teaching methods such as:how to combine pupillary condition to arrange contents,adopt various teaching model and abundant information,pay attention to spoken English expression and application ability etc.

Based on the difference detection principle,an algorithm is presented for achieving fast demodulation of FSK signals in software radio.Theoretical analysis and simulation results verify the efficiency of this algorithm.Comparing with digital quadrature demodulation algorithm,it has nice properties such as no need to resume local carrier recovery,easier to realise and less computation cost.Thus it can satisfy the requirements of demodulation algorithm in sofeware radio.

A DFT-based digital scheme to demodulate π/4-QDPSK signals is presented.Considering π/4-DQPSK waveform can be divided into transitional section and steady section actually,only samples in steady section are selected to do DFT.Simulation of this scheme was given out: comparing with differential demodulation,it is easier and its noise immunity is better when SNR is more than 3 dB.This method is expected to be applied to π/4-DQPSK software radio receiver design.

With the GSM network rapid expansion of its scope rapid expansion and service type, the GSM network is jammed even more seriously, which not only affects the GSM network capacity, but also reduces the communication quality. In view of the GSM network technology standard and the actual operation, the paper proposes even simpler and more accurate interference recognition flow and the method.

Modulation and demodulation of signal is one of the most important research topics in software radio(SR).Based on Hilbert transform,this paper presents an algorithm for fast digital demodulation in SR.Theoretical analysis and simulation results indicates that noise-resisting property has been improved obviously.Compared with traditional methods,it is all-purpose,simple,and easy in realization with less computation,thus can satisfy the requirements of demodulation algorithm in SR.The algorithm is of theoretical significance and practical value.

对软件无线电中的数字化解调算法进行研究,并提出一种基于离散傅立叶变换(DFT)的四进制相移键控信号(QPSK)数字化解调算法.该算法考虑到实际中接收到的信号波形有过渡区和稳定区之分,通过对稳定区内载波周期的采样值进行离散傅立叶变换(DFT)提取相位信息来恢复原始调制信号.文中给出了软件仿真实现,其结果表明:采用该方法可以正确地实现QPSK信号的解调,与传统的解调方法相比,不仅解调过程简单易于实现,计算量小,而且抗干扰性能也得到了明显改善.若将该方法应用于采用QPSK信号方式的数字化接收机设计中将具有实际的意义.

Various methods of A/D sampling were analyzed in this paper.By comparing the features and performances of CIC filter,ISOP filter and FIR filter,an idea of utilizing FIR filter to realize digital signal DDC(digital down-conversion) was put forward.Combined with characters of software radio and specifications of A/D converting,the optimal realization method of A/D converting was discussed.The sampling rate and the load of DSP was decreased when the base band signal was processed.

This paper presents a DFT-based digital demodulation scheme for 2DPSK signal in software radio.The idea is to do DFT on samples in every one(or several) carrier circle to get the phase of the 2DPSK signal and resume the modulated signal.The simulation with software is also given out and the result indicates: 2DPSK signal can be demodulated accurately with DFT algorithm.Comparing with traditional methods,not only the process is simple and easy to realize with less computation,but also noise-resisting property is improved obviously.This method has practical significance in design of 2DPSK signal digital receiver.