基于MSP430高精度数字电流仪的设计

设计了一套基于MSP430超低功耗在线测量电流仪,可以精密测量小范围内的电流强度。分析了干扰噪声对测量的影响。在硬件电路设计中利用了二极管的门坎电压,在软件设计中引入了小波算法对信号进行降噪处理。给出了中心频率为50Hz,额定电流为200mA的小电流试验结果,试验结果和实际运行情况表明,在常用工频附近,其准确度可达0.5%,该技术已在强电磁场下应用,其性能稳定、可靠。     

银行视频监控系统中的视频调度策略

提出了一种用于银行的数字视频监控系统模型,研究了在该模型下的视频调度算法.调度算法充分考虑了银行视频监控系统的实际需求,并结合其他应用领域视频调度思路,在网点带宽资源不足的情况下它提供了一种有效解决方案,在实际应用妹中能达到用户的需求并取得了良好的运行效果.     

Effect of thermo-mechanical process on structure and high temperature shape memory properties of Ti–15Ta–15Zr alloy

The effect of thermo-mechanical treatment on microstructure evolution, martensite transformation, and shape memory behavior of Ti–15Ta–15Zr high temperature shape memory alloy were investigated. Different martensite morphologies were found with different annealing temperatures. The Ti–15Ta–15Zr alloy exhibits almost perfect shape memory recovery strain of 6% after annealing at 973 K for 0.5 h.     

Thermal stability and high-temperature shape memory characteristics of Ti–20Zr–10Ta alloy

The microstructure, martensite transformation behavior, thermal stability and shape memory behavior of Ti–20Zr– 10Ta high temperature shape memory alloy were investigated. The Ti–20Zr–10Ta alloy exhibited a reversible transformation with the high martensite transformation temperature of 500oC and good thermal stability. The alloy displayed the elongation of 15% and a maximum recovery stain of 5.5% with 8% pre-strain.     

Thermal stability and high-temperature shape memory characteristics of Ti-20Zr-10Ta alloyThermal stability and high-temperature shape memory characteristics of Ti-20Zr-10Ta alloy

The microstructure, martensite transformation behavior, thermal stability and shape memory behavior of Ti-20Zr- lOTa high temperature shape memory alloy were investigated. The Ti-20Zr-10Ta alloy exhibited a reversible transforma- tion with the high martensite transformation temperature of 500 ~C and good thermal stability. The alloy displayed the elongation of 15% and a maximum recovery stain of 5.5% with 8% pre-strain.