共查询到20条相似文献，搜索用时 862 毫秒
1.
李周平 《杨凌职业技术学院学报》2011,10(2):14-15,22
为了实现将VGA接口信号转换成模拟液晶屏的驱动信号,通过采用ADI公司的高性能DSP芯片ADSP-21160,完成伽玛校正、时基校正、时钟发生器、图像优化和控制信号的产生等驱动电路的主要功能。本文分析了硬件电路及系统功能的设计与实现,阐述了系统的软件流程。经实践证明,本文所设计的基于ADSP-21160的液晶驱动电路,实时性好、通用性强、高速高效,较好满足了TFT-LCD的使用要求。 相似文献
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介绍了智能小区配电管理系统的硬件组成及基于ARM嵌入式系统的软件实现,包括系统任务的划分、GUI设计、负荷控制以及通讯系统的详细介绍,为其他基于嵌入式芯片的智能化监控系统提供了高性价比、图形化的高效开发模式。 相似文献
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唐鑫凌 《零陵师范高等专科学校学报》2012,(12):28-29,62
该设计是从触摸屏中输入手写体,通过电脑上的程序显示从触摸屏中输入的手写体,显示程序是基于VC＋＋6.0,设计采用的微处理芯片是AT89S51,通过单片机控制A/D转换,通过相应的通讯实现单片机与电脑之间的数据交换,实现了相应的通讯协议及字符数据的传输,并实现了相应的软件与硬件的调试,实验结果证明设计方法有效。 相似文献
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CAN总线通信在组合式三相光伏逆变器中的应用 总被引：1，自引：0，他引：1
针对某一组合式三相光伏逆变系统需要,将DC-DC环节的功率信号传输到逆变环节以便对输出功率进行动态调节的问题,利用TMS320LF2407A的内嵌CAN控制器设计了一种在直流变换器和组合式三相逆变桥的DSP控制芯片之间进行功率信号传输,并通过PC机进行监控的CAN总线通信方案。阐述了该方案的工作原理、硬件电路、隔离措施、相关寄存器的配置以及软件设计流程。该方案无论软件和硬件都易于实现,并通过实验验证了方案的可靠性和实用性。 相似文献
5.
林勇 《泰州职业技术学院学报》2005,5(6):13-15
采用DSP芯片控制室外机的多联空调机组,室内机往往采用单片机控制.通过对其内外机通讯系统的硬件和软件进行分析和研究,设计了一套控制方案.通过实验验证,通讯正确率可以达到98%以上,系统可以实时对用户要求做出反馈. 相似文献
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DSP Builder在数字信号处理中的应用 总被引：2，自引：0，他引：2
目前数字信号处理（DSP）技术发展迅猛,在电子、通信、航天等领域DSP技术都有着十分广泛的应用.以往设计人员在进行DSP系统设计时通常采用DSP处理器或在FPGA上通过硬件描述语言（VHDL）实现,设计难度大,开发周期长.本文介绍的DSP Builder是Altera公司推出的一个DSP开发工具,允许设计者在Matlab中完成算法设计,在Simulink软件中完成系统集成,然后通过SignalCompiler模块生成Quartus II软件中可以使用的硬件描述语言文件,通过综合仿真后下载到FPGA芯片内,从而完成系统设计.与以往基于硬件语言的设计相比,这种设计流程更快、更容易. 相似文献
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为了实现铅淬火炉温度的精确控制,开发了温度智能测控系统.阐述了系统的硬件设计和软件实现,硬件包括温度传感器调理电路、数据采集电路、温度控制电路、单片机系统和串行通讯电路,软件是利用LabVIEW进行上位机的串行通讯、PID程序和人机界面的设计.最后分析了该温度智能闭环测控系统的动态精度,并给出实验结果进行验证,其控制精度可达到±1℃以内. 相似文献
8.
骆舒萍 《漯河职业技术学院学报》2012,11(2):1-4
介绍一种基于ARM9微处理器s3C2440A的嵌入式网络通信接口电路,该电路采用以太网控制芯片cs8900A实现了网络的互联。给出了硬件电路的设计和软件的设计思路,该设计方案具有硬件电路简捷、成本低、性能可靠等特点。 相似文献
9.
基于MODBUS协议的DSP与PLC通信实现研究 总被引：1，自引：0，他引：1
采用MODBUS协议及MODBUS协议的RTU模式,完成了MODBUS协议的编写、协议底层硬件电路的设计和协议模块的软硬件调试,实现了DSP与PLC之间的数据传输。 相似文献
10.
尹元 《连云港职业技术学院学报》2013,26(1):13-19
选用方波无刷直流电机作为一体化关节的驱动电机。阐述了关节控制系统控制整体方案,设计完成了DSP控制电路和功率驱动电路,主要包括DSP芯片外围电路、IR2136三相逆变桥电路、PWM光耦隔离电路、霍尔信号处理电路、光电编码器电路、电流采样电路和系统保护电路。这几个部分构成了一个有机的整体,为关节控制系统稳定、安全的工作提供了坚实的基础。最后,通过实验验证了关节控制系统的可靠性和正确性,实现了关节的高精度控制。 相似文献
11.
邱崇丙 《唐山师范学院学报》2014,(1):21-23
汉字的六书,《说文》对“转注”一类,语焉不详。后世学者提及转注,也仅限于许慎所举出的例字。《汉字例说》一文,作者从转注的角度综合考虑,对部分现代常用字作了分析,跟传统的解释有所不同。希望能抛砖引玉,互相切磋,以推进学术研究。 相似文献
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Rachel Zupek 《海外英语》2007,(11):40-41
我们绝大部分人都同意一件事情——我们喜欢金钱。但是你对金钱的喜欢之情足够到让你创立一份事业么?.财富通常被人忽视,主要在于人们不能真正了 相似文献
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《海外英语》2007,(4):36
There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love. 相似文献
15.
YANGShiguo 《重庆大学学报(英文版)》2004,3(1):86-88
The problem on the geometrc inequalities involving an n-dimensional simplex and its inscribed simplex is studied. Aninequality is established, which reveals that the difference between the squared circumradius of the n-dimensional simplex andthe squared distance between its circumcenter and barycenter times the squared circumradius of its inscribed simplex is not lessthan the 2(n-1)th power of n times its squared inradius, and is equal to when the simplex is regular and its inscribed siplex is atangent point one. Deduction from this inequality reaches a generalization of n-dimensional Euler inequality indicating that thecircumradius of the simplex is not less than the n-fold inradius. Another inequality is derived to present the relationship betweenthe circumradius of the n-dimensional simplex and the circumradius and inradius of its pedal simplex. 相似文献
16.
Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject. 相似文献
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GUO Bao-feng Xiao Da-wei 《重庆大学学报(英文版)》2005,4(3):129-133
Using virtual reality for interactive design gives a designer an intuitive vision of a design and allows the designer to achieve a viable, optimal solution in a timely manner. The article discusses the process of making the Virtual Reality System of the Humble Administrator＇s Garden. Translating building data to the Virtual Reality Modeling Language （VRML） is by far unsatisfactory. This creates a challenge for computer designers to do optimization to meet requirements. Five different approaches to optimize models have been presented in this paper. The other methods are to optimize VRML and to reduce the file size. This is done by keeping polygon counts to a minimum and by applying such techniques as object culling and level-ofdetail switching. 相似文献
19.
The awareness of individualism can be traced back to the period of American Revolution when the Declaration of Independence was produced.It expressed basic beliefs concerning freedom,equality,democracy,privacy and the relationship between people and government,which were exactly what the philosophy of individualism mostly dealt with at that time.This paper is to exploit the essence of individualism by analyzing the Declaration .The analysis enables us to reconsider its significance to the issue of America human rights and foreign policies. 相似文献
20.
Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities. 相似文献