Linear 公司的LTC4310是絕緣的雙向I2C總線通信器件,每個器件可把I2C邏輯狀態編碼成信號,通過絕緣層傳輸到另一個器件.接收器件解碼,并驅動I2C總線到適當的確邏輯狀態.主要用在絕緣的I2C, SMBus和PMBus 接口,絕緣電源,以太網供電和正到負電源通信.本文介紹了LTC4310主要特性,典型應用以及多種應用電路框圖.
上傳時間: 2013-11-02
上傳用戶:trepb001
針對目前汽車追尾事件頻發問題,提出一種防汽車車前和車后追尾的安全裝置設計。該設計以高性能、低功耗的8位AVR微處理器ATmega8L為核心,結合霍爾式車速傳感器、激光雷達測距裝置和MMA7260QT加速度傳感器,能夠兼顧車前和車后,摒棄以往設計中只考慮車前或車后單一性缺點,尤其適用于高速、夜晚或新手行車。 Abstract: Aiming at the high frequency of vehicle rear-end collision,a safe device design of anti-vehicle rear-end collision is presented.In the design,the high-performance,low-power8-bit AVR microprocessor ATmega8L is utilized as a core combined with Hall-type speed sensor,laser-radar ranging devices and the acceleration sensor MMA7260QT.The design considers both the front and back of a car,and overcomes the drawbacks of former designs in which only the front or the back of the car is considered,so it is especially suitable for high-speed,night or the beginner’s driving.
上傳時間: 2013-10-14
上傳用戶:GavinNeko
摘要:在工業自動控制中,單片機與PLC的遠距離通信是一個難點與熱點問題。本文設計了S7-200PLC與PIC16F877單片機實現遠距離串行通信的硬件連接和軟件實現方法。本文采用了MAX485E芯片進行TTL電平與差分信號之間的轉換,使用RS-485端口和半雙工模式進行通信。最后通過異或校驗碼對接收到的數據進行核對,以進一步提高數據傳輸的可靠性。實驗證明,該方法成功實現了單片機與PLC的遠距離通信,并且具有開發簡單,抗干擾能力強的特點,具有一定實用價值。關鍵詞:單片機 PLC 串行通信
上傳時間: 2014-12-27
上傳用戶:YUANQINHUI
偉福LAB6000U系列仿真實驗系統性能特點:USB通信接口+串行通信接口含偉福先進的E6000仿真功能,硬件斷點、不占用用戶資源含32路、16K深度、10M的邏輯分析儀,32K深度跟蹤器,8路、20M波形發生器含靜態硬件測試儀(windows版本)含保護電路,仿真器部分與用戶電路部分采用隔離技術,使用更加安全可靠一機多用,配置51/96/8088仿真板可以仿真MCS51/MCS96/8086具有擴展功能,在板DIP擴展座和EPLD擴展座給實驗的擴展提供空間軟件平臺使用最新偉福E6000仿真器軟件,運行于WIN9x/WINME/WINNT
上傳時間: 2013-10-23
上傳用戶:chfanjiang
在開放式數控系統結構模型的基礎上,研究了基于ISA總線的DSP通信控制原理。采用中斷方式完成了PC機和DSP之間的通信。介紹了以DriverWorks為工具開發ISA設備WDM驅動程序的方法,探討了中斷處理、驅動程序與應用程序之間的通信,簡要說明了驅動程序的安裝與調試。通過調試,系統設計運行穩定。 Abstract: The ISA bus and DSP correspondence control principle is investigated in the basis of the existing open architecture numerical control system.The interrupt method is used to realize the communication between PC and DSP based on the ISA bus.The methods of WDM driver exploitation for ISA device using Driver Works are introduced.The main process of driver program and the keys such as handle interrupt and the communication between the drivers and application are presented.And how to debug and install the drive is explained.
上傳時間: 2013-11-04
上傳用戶:kang1923
為滿足礦井安全生產要求,介紹了一種以AT89C51單片機為主控器,對環境空氣的溫度、有毒易燃氣體的濃度等進行檢測的監控系統。該系統配合外圍電路能實現對上述環境指標的控制并存儲相關數據與上位PC機通信。它采用硬件抗干擾和軟件抗干擾技術,以確保整個系統工作的準確性。 Abstract: In order to meet the needs of mine produce safety,a kind of intellignet mine ambient monotoring and control system based on AT89C51 is introduced.This system can detect the temperature of ambient of mine,the density of poisonous inflammable gas,combined external circuit.With its function part, this system can change above-mentioned elements.
上傳時間: 2013-11-10
上傳用戶:wendy15
提出了一種基于C8051F320的列車安全巡檢儀的設計方案,詳細闡述了巡檢儀的各個模塊的硬、軟件設計。巡檢儀集信息采集、軸溫檢測、照明和記錄存儲等功能于一體,實現了對列車安全巡檢工作有效的監督和科學管理。系統軟件采用C51編寫,對單片機進行有效的電源管理,保證了巡檢儀的穩定性、可靠性和低功耗性。 Abstract: This paper puts forward a design of train safety inspection based on C8051F320,describes all modules hardware and software design of inspection instrument.The inspection instrument has the function of information collection, axle’s temperature detection, lighting and records storage.It can supervise and administer train safety inspection work effectively.The system software using C51 can manage the power of single chip microcomputer, and guarantee the stability, reliability and low power consumption of the inspection instrument.
上傳時間: 2013-12-22
上傳用戶:落花無痕
介紹了電力操作電源與智能電池巡檢系統的特點,給出了一種基于超低功耗單片機MSP430 F149針對中小型變電站自動化運行的專用設備的基本設計原理及實現方法,最后給出了詳細硬件構成和軟件實現。該系統能滿足中小型變電站安全、可靠、自動運行的要求,并通過與上位機的串行通信實現變電站的遠程管理和控制。 Abstract: The characters of the intelligent battery data logging system of the electric operation power are introduced.The basic design principle and the implemented methods of the special equipment which only designed for the middle or small transformer substation based on MSP430F149 are prescribed. Finally, the hardware block diagram and the software flow chart are also given. The function that the system finally needs to realize can basically meet with the middle or small transformer substation’s satisfy, reliably,and automatic running.And it can also realize the transformer substation long-distance management and control by serial communicating with the host computer.
上傳時間: 2013-11-25
上傳用戶:黃華強
摘要:本文闡明了單片機在電力系統安全統計上的應用與設計方法。幾年來,通過一些單位的實際應用,已證實了使用單片機進行自動控制的優越性。 關鍵詞:單片機;自動控制;軟件
上傳時間: 2013-11-07
上傳用戶:wenyuoo
摘要:介紹了采取專用電平轉換芯片MAX232實現PC機與MCS51單片機之間的串行通信的方法.通過對系統的通信方式選擇89C51通信波特率的設置、通信的設置,以及對接口電路的軟件和硬件的設計分析,展示了該電路的實用性.關鍵詞:微處理器;PC機;串行通信;RS-232接口;MAX232芯片
上傳時間: 2014-01-22
上傳用戶:shizhanincc