飛機(jī)電網(wǎng)故障時,機(jī)載電氣盒必須在延遲時間內(nèi)切斷電網(wǎng),保護(hù)機(jī)載設(shè)備。采用AT89S52設(shè)計(jì)的電氣盒測試儀能夠測試電氣盒保護(hù)功能,測量延遲時間。實(shí)際應(yīng)用結(jié)果表明,該測試儀具有測量準(zhǔn)確、可靠性高、成本低等優(yōu)點(diǎn)。 Abstract: The helicopter-electrical-box must shut off the helicopter power,protect the equipments of the helicopter when the helicopter power is failed.The TESTER for the helicopter-electrical-box based on AT89S52is used for testing the protect-ing function and measuring the delay time.Application results show this TESTER has some advantages,such as accurate mea-surement,high dependability,economical cost etc.
上傳時間: 2014-12-27
上傳用戶:786334970
介紹了基于單片機(jī)航空交流電參數(shù)測試儀的系統(tǒng)設(shè)計(jì)。以Silicon Labs公司的C8051F005單片機(jī)為核心設(shè)計(jì)出數(shù)據(jù)采集板,通過RS-232串口與上位機(jī)通訊。運(yùn)用Lab Windows/CVI編寫的上位機(jī)軟件實(shí)現(xiàn)信號的檢測以及波形和數(shù)據(jù)的顯示,給出了測試儀硬件電路的組成和軟件流程圖。本系統(tǒng)具有硬件結(jié)構(gòu)簡單、容易實(shí)現(xiàn)和成本低等特點(diǎn),在實(shí)際應(yīng)用中其穩(wěn)定性、精確性均能滿足客戶要求。 Abstract: The design of aeronautics AC parameters TESTER based on the single-chip is introduced.The core component of data acquisition board is C8051F005 single chip of Silicon Labs Company,and communication with PC through RS-232. The signal processing software programmed with LabWindows/CVI can be used successfully to fulfill inspection of signal and display of the waveform and data. The hardware and software configuration of test instrument are provided.The hardware of the system is simple, and can be easily realized.The stability and precision of the measurement instrument are enough to meet the requirements.
標(biāo)簽: C8051F005 單片機(jī) 儀的設(shè)計(jì) 參數(shù)測試
上傳時間: 2013-11-18
上傳用戶:wang5829
Designing Boards with Atmel AT89C51, AT89C52, AT89C1051, and AT89C2051 for Writing Flash at In-Circuit Test:Recent improvements in chips andTESTERs have made it possible for theTESTER to begin taking over the role traditionallyassigned to the PROM programmer.Instead of having a PROM programmerwrite nonvolatile memoriesbefore assembling the board, the in-circuitTESTER writes them during in-circuittesting operations. Many Teradyne Z18-series TESTERs are now in use loadingcode into nonvolatile memories, microcontrollersand in-circuit programmable logic devices. The purpose of this note is to explain how the Z18 approaches the writing task for Atmel AT89C series IC’s,so that designers of boards using these chips can get the best results.
標(biāo)簽: Designing Boards Atmel with
上傳時間: 2013-11-20
上傳用戶:lijianyu172
Audio100 audio TESTER是短歌行網(wǎng)站(WWW.AUDIO100.COM)開發(fā)的音頻信號發(fā)生器軟件,提供了35種不同頻率的正弦波信號,也提供了3組粉紅噪音信號和一組20Hz-20kHz的掃頻信號,所有信號的幅度為-20dB。Audio100 audio TESTER中的波形信號全部從專業(yè)音頻信號發(fā)生儀器采樣,所產(chǎn)生波形的頻率極為準(zhǔn)確,失真度也極小,并且提供了專業(yè)的音頻測試信號說明。在1.0以前的版本均為測試版本,在以后的版本中將加入更多頻率的正弦波和不同頻率的方波、三角波等波形信號,成為一個具有專業(yè)品質(zhì)的軟信號發(fā)生器。
上傳時間: 2013-11-11
上傳用戶:zl520l
Audio100 audio TESTER是短歌行網(wǎng)站(WWW.AUDIO100.COM)開發(fā)的音頻信號發(fā)生器軟件,提供了35種不同頻率的正弦波信號,也提供了3組粉紅噪音信號和一組20Hz-20kHz的掃頻信號,所有信號的幅度為-20dB。Audio100 audio TESTER中的波形信號全部從專業(yè)音頻信號發(fā)生儀器采樣,所產(chǎn)生波形的頻率極為準(zhǔn)確,失真度也極小,并且提供了專業(yè)的音頻測試信號說明。在1.0以前的版本均為測試版本,在以后的版本中將加入更多頻率的正弦波和不同頻率的方波、三角波等波形信號,成為一個具有專業(yè)品質(zhì)的軟信號發(fā)生器。
上傳時間: 2013-10-18
上傳用戶:半熟1994
一個用于搜索本地文件內(nèi)容的小型搜索引擎,支持詞根搜索,類似于"some thing"的搜索,甚至允許單詞間隔搜索,比如"some thing"~2,表示some和thing之間可以有小于兩個單詞的間隔,可以使用關(guān)鍵字and,or,not,但需要說明的是,整個程序中TESTER.java是一個Facade類,本程序并沒有做應(yīng)用,如果要基于本程序開發(fā)出一個用戶界面,可以基于Facade類進(jìn)行開發(fā),直接調(diào)用其中的靜態(tài)方法就可以了,詳細(xì)的說明包括設(shè)計(jì)文檔可以參考壓縮包中的doc/spec/的文件。
上傳時間: 2016-12-26
上傳用戶:asdkin
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