CAN與RS232轉換節點的設計與實現 介紹將CAN總線接口與RS232總線接口相互轉換的設計方法和2種總線電平轉換關系,實現CAN總線與各模塊的接口設計,制定了相應的軟硬件設計方案,并給出軟件設計流程圖以及部分硬件設計原理圖。為CAN總線與RS232總線互聯提供了一種方法,對CAN總線與RS232總線接口設備的互聯和廣泛應用的實現具有重要意義。關鍵詞:CAN總線;RS-232總線;串行通信Design and Realization of CAN and RS232 Transformation NodeZHOU Wei, CHENG Xiao-hong(Information Institute, Wuhan University of Technology, Wuhan 430070)【Abstract】This paper introduces one design method of the CAN bus interface and the RS232 bus interface interconversion, emphasizes two kindof bus level transformation relations, realizes the CAN bus and various modules connection design, formulates the design proposal of correspondingsoftware and hardware, and gives the flow chart of software design as well as the partial schematic diagram of hardware design. It providesonemethod for the CAN bus and the RS232 bus interconnection, has the vital significance to widespread application realization of the CAN busand theRS232 bus interface equipment interconnection.【Key words】CAN bus; RS-232 bus; serial communication
上傳時間: 2013-11-04
上傳用戶:leesuper
簡要介紹了CAN總線技術與USB總線技術的特點,給出了通過將兩特點相結合,并選用微控制器AT89C52堯USB控制芯片CH372和獨立CAN控制芯片SJA1000實現USB-CAN數據傳輸系統的設計方案遙該系統不但能實現CAN總線與USB總線之間的數據轉化,并可在兩臺主機配合下完成兩個節點之間數據的透明傳輸。關鍵詞 通用串行總線USB CAN總線 數據通信
上傳時間: 2013-10-15
上傳用戶:plsee
應用51單片機為控制核心結合其他的器件設計了一種能連接于CAN總線上的智能節點。通過單片機控制CAN總線控制器SJA1000,并進一步通過CAN總線收發器PCA82C250,實現該智能節點與CAN總線的通信。此外通過對MCS-51單片機的I/O進行相應的擴展,使該智能節點具有了8輸入和8輸出的控制端口。最終完成該智能節點并通過實際測試,驗證了其實用性。
上傳時間: 2014-01-14
上傳用戶:u789u789u789
:本文介紹基于ARM的USB—CAN總線通訊協議轉換器,介紹設備 件程序,驅動程序,應用程序的設計和具體實現.
上傳時間: 2013-10-26
上傳用戶:x18010875091
ACREP-202是針對工業現場和煤礦系統推出的高品質設備。用于成倍的延長CAN總線通信距離,擴大 CAN 網絡的覆蓋范圍;2.5Kbps 和 3Kbps 超低波特率支持,特別適合煤礦等場合的超遠距離傳輸。
上傳時間: 2013-11-05
上傳用戶:13188549192
提出了一種基于雙處理器的CAN現場總線與以太網絡互連解決方案,詳細介紹了該通信接口卡的軟硬件設計,實現了生產管理層和智能裝置之間基于IEC60870-5-101/104通信規約的數據通信。
上傳時間: 2014-12-29
上傳用戶:PresidentHuang
運用低功耗C0rtex-M3微控制器STM32F103VBT6和FPGA芯片設計一種基于CAN總線的運動控制器。介紹系統的體系結構、主要硬件設計和軟件結構。利用FPGA高速處理能力實現控制算法,與外界通信采用STM32和CAN總線技術,系統穩定可靠,另外,將設計好的FPGA程序或是C程序進行封裝,系統的可移植性強。
上傳時間: 2013-10-30
上傳用戶:woshini123456
介紹一種基于CAN總線的遠程數據分布式測控系統,用于實現生產過程中集中監測、管理和分散控制。該系統能夠實時監測工業現場多種設備溫度、濕度、電壓、電流、壓力、流量等數據,采用EM9161為工控嵌入式主板,通過CAN總線組成分布式控制網絡。該系統不僅通信距離遠、速率高,而且抗干擾能力強。
上傳時間: 2013-11-24
上傳用戶:253189838
通過比較各種隔離數字通信的特點和應用范圍,指出塑料光纖在隔離數字通信中的優勢。使用已經標準化的TOSLINK接口,有利于節省硬件開發成本和簡化設計難度。給出了塑料光纖的硬件驅動電路,說明設計過程中的注意事項,對光收發模塊的電壓特性和頻率特性進行全面試驗,并給出SPI口使用塑料光纖隔離通信的典型應用電路圖。試驗結果表明,該設計可為電力現場、電力電子及儀器儀表的設計提供參考。 Abstract: y comparing characteristics and applications area of various isolated digital communications, this article indicates advantages of plastic optical fiber in isolated digital communications. Using the standardized TOSLINK interface, it helps to control costs and difficulty in hardware development and design. Then it gives the hardware driver circuit of plastic optical fiber module, explains the noticed details in design process, gives results on the basis of the optical transceiver module voltage characteristics and frequency characteristics tests. Finally,it gives typical application circuit of the SPI communication port by using plastic optical fiber isolation .The results show that this design can be referenced for the power field, power electronics and instrumentation design.
上傳時間: 2014-01-10
上傳用戶:gundan
同步技術是跳頻通信系統的關鍵技術之一,尤其是在快速跳頻通信系統中,常規跳頻通信通過同步字頭攜帶相關碼的方法來實現同步,但對于快跳頻來說,由于是一跳或者多跳傳輸一個調制符號,難以攜帶相關碼。對此引入雙跳頻圖案方法,提出了一種適用于快速跳頻通信系統的同步方案。采用短碼攜帶同步信息,克服了快速跳頻難以攜帶相關碼的困難。分析了同步性能,仿真結果表明該方案同步時間短、虛警概率低、捕獲概率高,同步性能可靠。 Abstract: Synchronization is one of the key techniques to frequency-hopping communication system, especially in the fast frequency hopping communication system. In conventional frequency hopping communication systems, synchronization can be achieved by synchronization-head which can be used to carry the synchronization information, but for the fast frequency hopping, Because modulation symbol is transmitted by per hop or multi-hop, it is difficult to carry the correlation code. For the limitation of fast frequency hopping in carrying correlation code, a fast frequency-hopping synchronization scheme with two hopping patterns is proposed. The synchronization information is carried by short code, which overcomes the difficulty of correlation code transmission in fast frequency-hopping. The performance of the scheme is analyzed, and simulation results show that the scheme has the advantages of shorter synchronization time, lower probability of false alarm, higher probability of capture and more reliable of synchronization.
上傳時間: 2013-11-23
上傳用戶:mpquest