AD8280鋰電子電池安全監(jiān)控器是一款用于鋰離子電池組的純硬件安全監(jiān)控器，有多個輸入可用來監(jiān)控6個電池的電壓以及2個溫度傳感器。多個AD8280器件可以通過菊花鏈方式連接起來，以監(jiān)控遠多于6個電池單元的電池組，而無需使用大量隔離器。其輸出可以配置為獨立或共用報警狀態(tài)。
標簽： 8280 AD 鋰電子電池 安全監(jiān)控器
上傳時間： 2013-11-02
上傳用戶：3到15
基于對相關(guān)電力企業(yè)安全工器具的調(diào)研，針對現(xiàn)有的對安全工器具的管理比較落后，從而導致難以對安全工器具進行有效監(jiān)控的問題，提出了一種簡單有效、容易實施的安全工器具監(jiān)控方案。首先從整體上描述了安全工器具監(jiān)控系統(tǒng)的總體結(jié)構(gòu)，然后分別從硬件設(shè)計和軟件設(shè)計兩個方面對系統(tǒng)進行了詳細闡述。該系統(tǒng)已經(jīng)成功運用于某電力企業(yè)的安全工器具監(jiān)控，運行穩(wěn)定，達到了設(shè)計的預(yù)期目的。
標簽： AVR 單片機 監(jiān)控 系統(tǒng)設(shè)計
上傳時間： 2013-11-05
上傳用戶：blacklee
針對目前汽車追尾事件頻發(fā)問題，提出一種防汽車車前和車后追尾的安全裝置設(shè)計。該設(shè)計以高性能、低功耗的8位AVR微處理器ATmega8L為核心，結(jié)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(shè)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
提出了一種基于C8051F320的列車安全巡檢儀的設(shè)計方案，詳細闡述了巡檢儀的各個模塊的硬、軟件設(shè)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(xiàn)了對列車安全巡檢工作有效的監(jiān)督和科學管理。系統(tǒng)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(wěn)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
摘要：本文闡明了單片機在電力系統(tǒng)安全統(tǒng)計上的應(yīng)用與設(shè)計方法。幾年來，通過一些單位的實際應(yīng)用，已證實了使用單片機進行自動控制的優(yōu)越性。 關(guān)鍵詞：單片機；自動控制；軟件
標簽： 單片機 電力 系統(tǒng)安全
上傳時間： 2013-11-07
上傳用戶：wenyuoo
摘要: 本文在研究了網(wǎng)絡(luò)安全的國內(nèi)外有關(guān)情況后對網(wǎng)絡(luò)安全技術(shù)進行了探討,介紹了一種簡單而實用的網(wǎng)絡(luò)安全產(chǎn)品,添補了這方面的空白,而且本文介紹的產(chǎn)品已經(jīng)應(yīng)用到了許多部門,為網(wǎng)絡(luò)安全做出了貢獻.關(guān)鍵詞: 網(wǎng)絡(luò);安全;Internet;黑客;物理隔離;MT8870
上傳時間： 2013-11-20
上傳用戶：1318695663
This white paper discusses how market trends, the need for increased productivity, and new legislation have accelerated the use of safety systems in industrial machinery. This TÜV-qualified FPGA design methodology is changing the paradigms of safety designs and will greatly reduce development effort, system complexity, and time to market. This allows FPGA users to design their own customized safety controllers and provides a significant competitive advantage over traditional microcontroller or ASIC-based designs. Introduction The basic motivation of deploying functional safety systems is to ensure safe operation as well as safe behavior in cases of failure. Examples of functional safety systems include train brakes, proximity sensors for hazardous areas around machines such as fast-moving robots, and distributed control systems in process automation equipment such as those used in petrochemical plants. The International Electrotechnical Commission’s standard, IEC 61508: “Functional safety of electrical/electronic/programmable electronic safety-related systems,” is understood as the standard for designing safety systems for electrical, electronic, and programmable electronic (E/E/PE) equipment. This standard was developed in the mid-1980s and has been revised several times to cover the technical advances in various industries. In addition, derivative standards have been developed for specific markets and applications that prescribe the particular requirements on functional safety systems in these industry applications. Example applications include process automation (IEC 61511), machine automation (IEC 62061), transportation (railway EN 50128), medical (IEC 62304), automotive (ISO 26262), power generation, distribution, and transportation. 圖Figure 1. Local Safety System
標簽： FPGA 安全系統(tǒng)
上傳時間： 2013-11-05
上傳用戶：維子哥哥
FPGA 具有輕松集成與支持新協(xié)議和新標準以及產(chǎn)品定制的能力，同時仍然可以實現(xiàn)快速的產(chǎn)品面市時間。在互聯(lián)網(wǎng)和全球市場環(huán)境中，外包制造變得越來越普遍，這使得安全變得更加重要。正如業(yè)界領(lǐng)袖出版的文章所述，反向工程、克隆、過度構(gòu)建以及篡改已經(jīng)成為主要的安全問題。據(jù)專家估計，每年因為假冒產(chǎn)品而造成的經(jīng)濟損失達數(shù)十億美元。國際反盜版聯(lián)盟表示，這些假冒產(chǎn)品威脅經(jīng)濟的發(fā)展，并且給全球的消費類市場帶來重大影響。本白皮書將確定設(shè)計安全所面臨的主要威脅，探討高級安全選擇，并且介紹Xilinx 的新型、低成本SpartanTM-3A、Spartan-3AN 和Spartan-3A DSP FPGA 如何協(xié)助保護您的產(chǎn)品和利潤。
上傳時間： 2014-12-28
上傳用戶：松毓336
Spartan-3AN 器件帶有可以用于儲存配置數(shù)據(jù)的片上Flash 存儲器。如果在您的設(shè)計中Flash 存儲器沒有與外部相連，那么Flash 存儲器無法從I/O 引腳讀取數(shù)據(jù)。由于Flash 存儲器在FPGA 內(nèi)部，因此配置過程中Spartan-3AN 器件比特流處于隱藏狀態(tài)。這一配置成了設(shè)計安全的起點，因為無法直接從Flash 存儲器拷貝設(shè)計。
上傳時間： 2013-11-04
上傳用戶：sammi
為了提高Linux操作系統(tǒng)的網(wǎng)絡(luò)安全性，對Linux系統(tǒng)的安全機制、網(wǎng)絡(luò)安全問題、主要攻擊方式進行了詳細分析，提出了基于Linux系統(tǒng)用戶管理、文件管理、預(yù)防攻擊、數(shù)據(jù)備份等切實可行的網(wǎng)絡(luò)安全策略，增強了Linux系統(tǒng)的網(wǎng)絡(luò)安全性，達到了較好的效果。
標簽： Linux 策略 網(wǎng)絡(luò)安全
上傳時間： 2013-12-18
上傳用戶：weiwolkt
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