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基于 DSP 的液晶显示模块设计 总被引:1,自引:1,他引:0
电能是一种广泛应用的二次能源,电能质量的优劣直接影响用电设备能否正常运行,因此实现电能参量的动态显示,以便实时对电能质量进行监测具有现实意义。文章利用DSP(F2812)和SMG12864液晶组成硬件显示电路,通过采集模块将数据送入DSP,经过DSP对数据进行处理,在液晶上显示出来。设计了DSP与液晶的接口电路和DSP驱动液晶显示的软件程序。实验证明,基于DSP(F2812)组成的液晶显示模块能够对电能质量参数实时动态显示,达到预期的设计效果。 相似文献
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为了提高学生的DSP编程调试能力,更好地理解与掌握电能参数测量计算的方法,本文提出并设计了一种基于DSP的电能参数计算实验教学平台。文中阐述了该平台的硬件构成及软件流程,设计了可产生不同阻抗特性的调节模块,针对不同的知识点,设计了若干个实验单元。教学实践表明,该平台可以提高学生综合运用所学知识的能力,对于应用型人才的培... 相似文献
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高速AD转换器ADS8364在电能质量监控系统中的应用 总被引:1,自引:0,他引:1
介绍了ADS8364的基本原理和工作方式,给出了以TMS320F2812型DSP为控制核心,以ADS8364为AD转换器件的电能质量监控系统的设计方法.同时给出了ADS8364的外围电路及其与DSP的接口电路,最后介绍了该电能质量监控系统的软件设计方案和程序流程. 相似文献
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为有效地测量电能质量,提出一种基于DSP(数字信号处理器)的电能质量在线检测装置的软件设计方法。该方法以芯片TMS320VC33为硬件基础,结合模块化设计理念,使得新设计结构简洁,实时性好。 相似文献
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电能计量装置远方自动检测是电力企业进行计量管理的一个重要环节。本系统的设计利用DSP技术、现代测控、通信技术和“多路选一”检测技术,实现了新型远程自动检测模式的设计。 相似文献
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利用DSP处理器的运算能力强、精度高和集成硬件资源丰富等特点,设计了以TMS320VC5509A为核心的电能质量监测系统,采用小波交换和傅里叶变换的时频域综合分析方法,实现了电能质量的在线监测功能.实践表明,本系统具有很高的测量速度和检测精度,功能齐全,扩展性好,能够对各种常见的电力系统电能质量扰动现象进行有效的分析,... 相似文献
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本文针对便携式仪器仪表类低功耗产品开发的需求,从微处理器选型、外围逻辑电路设计、电源高低电压切换等三个方面详细介绍了微机控制系统超低功耗设计思路,并将其成功应用于某电池供电的IC卡仪器仪表产品中,这些技术和策略具有一定的普适性和推广应用价值. 相似文献
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This paper discusses the importance of the voltage referential for power quality monitoring and power system’s instrumentation. Considering the operating conditions of simple power circuits, it will be demonstrated that an incorrect choice of the voltages referential may result in erroneous quantification of some power quality indices, especially in three-phase four wire circuits. The use of a virtual reference point and the neutral conductor as reference have been considered and the simulation results confirm the influence of the voltage reference selection in the evaluation of total harmonic distortion, unbalance factors and voltage sags. Finally a way of linking both methods will be discussed by means of Blakesley’s Theorem. 相似文献
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介绍了一种电力监控系统智能三相电力监控仪表的设计方案,叙述了监控仪表的总体结构,给出了信号调理电路、开关量输入/输出电路和通信接口电路的设计方案,并说明了监控仪表的硬件配置图、监控界面和典型的应用电路。监控仪表以32位ARM处理器MB9BF218为控制核心,以ATT7022D为测量元件,实现了对电压、电流、频率、功率因数、有功功率、无功功率等三相电力参数的测量,具有RS485和以太网RJ45两种通信接口,可以方便地与其它设备一起构成电力监控系统。该监控仪表置具有功能完善、高性价比、高可靠性的特点,具有一定的应用价值。 相似文献
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基于交流采样的电网电压智能监测仪的设计 总被引:1,自引:0,他引:1
针对电网电压的监测,通过交、直流采样方法对比,选用交流采样方法,设计开发了智能型电网电压监测仪,详细介绍了系统的硬件和软件设计。该系统有效减少了采样中的非线性环节,提高了采样精度,设计的仪表可实现单台独立工作,也可通过与PC机通讯,进行集中监控,适用于工业用电量采集等应用场合。 相似文献
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介绍几种简单实用的电源故障检测报警电路及电压监控电路 ,并详细介绍了电路结构及工作原理 ,试验结果表明 ,该电路工作可靠 ,能够迅速准确地对电源故障发出报警 相似文献
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We have proposed a failure analysis based on a real-time monitoring of power devices under acceleration test. The real-time monitoring enables to visualize the mechanism that leads to a failure by obtaining the change of structure inside the device in time domain with high spatial resolution. In this paper, we presented a new analytical instrument based on the proposed failure analysis concept. The essential functions of this instrument are (1) power stress control, (2) non-destructive inspection and (3) water circulation. An original design power-stress control system and a customized scanning acoustic microscopy system enable us a non-destructive inspection inside the device under power cycling test. This instrument exhibits a great advantage especially to monitor failure mechanisms without having to open the module. 相似文献
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Refet Firat Yazicioglu Tom Torfs Julien Penders Robert Puers Chris Van Hoof 《Microelectronics Journal》2009,40(9):1313-1321
Traditionally the monitoring of the biopotential signals are only limited to clinical applications. On the other hand, there is a growing demand for these biopotential signals to be used in non-clinical applications in order to improve the quality of life and enable the interaction between humans and machines. However, such non-clinical applications of biopotential signal monitoring requires various improvements not only in terms of size and comfort of the biopotential acquisition systems, but also in terms of their power dissipation. An important building block of the biopotential acquisition systems is the front-end circuitry that defines the quality of the extracted signals and unfortunately consumes unacceptable power, when the currently available circuitry is considered. Therefore, this paper focuses on the advances in low-power and high-performance readout circuit design for the acquisition of biopotential signals. In addition, several application examples will be demonstrated, which proves that the realization of high-performance and low-power readout circuits can actually enable the implementation of miniaturized and comfortable biopotential acquisition systems extending the usage of such systems towards non-clinical applications. 相似文献