电源网络S参数与芯片电源模型(Chip Power Module,CPM)级联可实现电源时域噪声仿真,完成电源完整性设计签核。当下部分仿真工具在AC阻抗优化过程中导出的S参数存在低频段无法覆盖的问题,影响时域纹波仿真精度,如果重新对S参数进行提取,...电源网络S参数与芯片电源模型(Chip Power Module,CPM)级联可实现电源时域噪声仿真,完成电源完整性设计签核。当下部分仿真工具在AC阻抗优化过程中导出的S参数存在低频段无法覆盖的问题,影响时域纹波仿真精度,如果重新对S参数进行提取,又会增加仿真时间降低仿真效率。针对AC阻抗优化过程中导出的S参数无法覆盖低频段的问题,提出了一种电源网络S参数低频段拓展方法,结合电压调节模块(Voltage Regulator Module,VRM)的R-L模型,推导出低频段的S参数可以借用抽取的S参数中最低频点处的S参数实现低频段S参数的拓展。仿真和实验结果表明,通过对低频段S参数进行拓展,电源时域纹波噪声仿真的精度提升31%。同时,低频段的S参数直接借用已抽取的S参数中低频点的数值无须重复提取,在8 GB内存的配置下,仿真时间节约14%左右,提高了仿真效率。展开更多
As weather radar stations require headroom environment to operate,they were mostly built on highlands which are usually unattended.The mains supply is relatively poor,and the risk of radar stoppages due to power outag...As weather radar stations require headroom environment to operate,they were mostly built on highlands which are usually unattended.The mains supply is relatively poor,and the risk of radar stoppages due to power outage is therefore ever-present.As such,the radar construction program is used to build a complementary security video monitoring system.By collecting monitoring images of the regulated power supply in real-time from power supply auto transfer systems in distribution rooms and radar transceiver rooms,using Spearman’s rank correlation coefficient to analyse pixel variation trends,and supplementing statistical analysis of pixel characteristics difference to eliminate misjudgments resulting from low image contrast in special scenarios,a software can be developed through C#.It has the function of automatically monitoring mains supply and alerting staff on duty to handle the power outage in a timely manner via text message so that any potential risk is neutralised before it can cause damage.This monitoring and auto-alerting approach is generally applicable to unattended rooms with large amounts of electronical equipment.展开更多
为进一步促进广播电视系统的发展进步,要整合技术内容,建构更加完整的技术模式,发挥不间断电源(Uninterruptible Power Supply,UPS)的优势作用,更好地维系电源终端的供电能力,从而为广播电视系统的稳定运营提供支持,促进经济效益和安全...为进一步促进广播电视系统的发展进步,要整合技术内容,建构更加完整的技术模式,发挥不间断电源(Uninterruptible Power Supply,UPS)的优势作用,更好地维系电源终端的供电能力,从而为广播电视系统的稳定运营提供支持,促进经济效益和安全效益和谐统一。文章简要介绍了UPS电源技术原理,并从防腐蚀、防氧化、防污染及防灰尘等方面对广播电视系统中UPS电源技术应用的环境要求予以讨论,着重研究了广播电视控制系统中UPS电源技术和具体应用等内容。展开更多
依据相关设计规范、标准要求,探讨医疗建筑中UPS(Uninterruptible Power Supply,不间断电源)的设计和选择要点。提出应根据负荷性质、电源输入要求、动态输出特性等因素进行医疗场所的UPS选型;并通过计算示例,探讨医疗场所UPS的容量计...依据相关设计规范、标准要求,探讨医疗建筑中UPS(Uninterruptible Power Supply,不间断电源)的设计和选择要点。提出应根据负荷性质、电源输入要求、动态输出特性等因素进行医疗场所的UPS选型;并通过计算示例,探讨医疗场所UPS的容量计算和电池选择。展开更多
基金Supported by Science and Technology Open Research Fund Project of Guizhou Meteorological Bureau(KF[2009]08)。
文摘As weather radar stations require headroom environment to operate,they were mostly built on highlands which are usually unattended.The mains supply is relatively poor,and the risk of radar stoppages due to power outage is therefore ever-present.As such,the radar construction program is used to build a complementary security video monitoring system.By collecting monitoring images of the regulated power supply in real-time from power supply auto transfer systems in distribution rooms and radar transceiver rooms,using Spearman’s rank correlation coefficient to analyse pixel variation trends,and supplementing statistical analysis of pixel characteristics difference to eliminate misjudgments resulting from low image contrast in special scenarios,a software can be developed through C#.It has the function of automatically monitoring mains supply and alerting staff on duty to handle the power outage in a timely manner via text message so that any potential risk is neutralised before it can cause damage.This monitoring and auto-alerting approach is generally applicable to unattended rooms with large amounts of electronical equipment.
文摘为进一步促进广播电视系统的发展进步,要整合技术内容,建构更加完整的技术模式,发挥不间断电源(Uninterruptible Power Supply,UPS)的优势作用,更好地维系电源终端的供电能力,从而为广播电视系统的稳定运营提供支持,促进经济效益和安全效益和谐统一。文章简要介绍了UPS电源技术原理,并从防腐蚀、防氧化、防污染及防灰尘等方面对广播电视系统中UPS电源技术应用的环境要求予以讨论,着重研究了广播电视控制系统中UPS电源技术和具体应用等内容。
