討論了一種船載USB系統(tǒng)跟蹤數(shù)傳信號可行性的方案,為實現(xiàn)船載USB系統(tǒng)對飛船目標跟蹤功能的備份提供了一個新的思路,該方案通過切換船載USB系統(tǒng)中跟蹤接收機軟件狀態(tài)的方式來實現(xiàn),此方法已成功應用于跟蹤過境數(shù)傳信號目標的跟星訓練中,試驗結(jié)果表明該方案是有效的和可行的,該方案在充分利用現(xiàn)有測控設備功能,不增加輔助設備功能的基礎上,可以顯著提高測量船執(zhí)行神舟飛船測控任務的可靠性。
上傳時間: 2014-12-23
上傳用戶:潛水的三貢
提出一種基于USB的彩色CCD高清圖像采集系統(tǒng)設計方案。圖像數(shù)據(jù)的來源采用的是SONY公司的 ICX205AK芯片,結(jié)合USB2.0接口,復雜可編程邏輯器件CPLD設計了一個高速的彩色CCD圖像采集系統(tǒng)。文中詳細闡述了系統(tǒng)內(nèi)不同模塊的硬件電路設計思路和軟件運行流程。整個系統(tǒng)由電源系統(tǒng)、CCD傳感器、A/D模數(shù)轉(zhuǎn)換器、CPLD控制器、USB2.0高速接口、上位機控制程序等各個部分組成。本系統(tǒng)的硬件電路可以協(xié)調(diào)正常工作完成分辨率為140萬的高清圖像采集,最高采集幀率達7.5 frame/s。
標簽: USB CCD 彩色 圖像采集系統(tǒng)
上傳時間: 2013-10-24
上傳用戶:tianming222
USB接口EMC設計標準電路:
上傳時間: 2014-08-08
上傳用戶:dyctj
為了實現(xiàn)直流電源的監(jiān)控,提出了一種具有USB HID數(shù)據(jù)通信功能的直流電源設計方案。詳細論述了基于STM32 USB固件庫(USB-FS Device library V3.3)的自定義HID類下位機的實現(xiàn),介紹了如何在VC2010集成開發(fā)環(huán)境中編寫多線程上位機程序并運用PlotLab(一個快速信號繪圖和可視化的VCL組件)顯示實時波形,最后再以實驗開發(fā)板和PC實現(xiàn)了HID數(shù)據(jù)通信,證明了此監(jiān)控設計方案的可行性。
標簽: USB HID 數(shù)據(jù)通信 直流電源
上傳時間: 2013-10-17
上傳用戶:13162218709
USB充電自動識別芯片,支持Apple手機,電流可達2A。
上傳時間: 2013-11-25
上傳用戶:dancnc
德州儀器微小型電源電路顯著簡化USB電池充電器設計
上傳時間: 2014-12-24
上傳用戶:浩子GG
Linear Technology offers a variety of devices that simplifyconverting power from a USB cable, but the LTC®3455represents the highest level of functional integration yet. The LTC3455 seamlessly manages power flowbetween an AC adapter, USB cable and Li-ion battery,while complying with USB power standards, all from a4mm × 4mm QFN package. In addtion, two high efficiencysynchronous buck converters generate low voltage railswhich most USB-powered peripherals require. TheLTC3455 also provides power-on reset signals for themicroprocessor, a Hot SwapTM output for poweringmemory cards as well as an uncommitted gain blocksuitable for use as a low-battery comparator or an LDOcontroller. The PCB real estate required for the entire USBpower control circuit and two DC/DC converters is only225mm2.
上傳時間: 2013-11-02
上傳用戶:名爵少年
The LTC®4099 high effi ciency USB power manager andLi-Ion/Polymer battery charger seamlessly managespower distribution from multiple sources in portableapplications. It is differentiated from other USB powermanagers by its bidirectional I2C port that allows the hostmicroprocessor to control and monitor all aspects of theUSB power management and battery charging processes.In addition, a programmable interrupt generation functionalerts the host microprocessor to changes in device statusand provides unprecedented control of power managementfunctions. This high degree of confi gurability allowspost-layout changes in operation, even changes in thefi eld, and it allows a single qualifi ed device to be usedin a variety of products, thus reducing design time andeasing inventory management.
上傳時間: 2013-10-22
上傳用戶:18602424091
USB轉(zhuǎn)CAN上位機軟件
上傳時間: 2013-10-24
上傳用戶:1214209695
USB總線轉(zhuǎn)接芯片CH341中文手冊
上傳時間: 2014-01-25
上傳用戶:Zero_Zero