基于對(duì)相關(guān)電力企業(yè)安全工器具的調(diào)研，針對(duì)現(xiàn)有的對(duì)安全工器具的管理比較落后，從而導(dǎo)致難以對(duì)安全工器具進(jìn)行有效監(jiān)控的問(wèn)題，提出了一種簡(jiǎn)單有效、容易實(shí)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(jì)和軟件設(shè)計(jì)兩個(gè)方面對(duì)系統(tǒng)進(jìn)行了詳細(xì)闡述。該系統(tǒng)已經(jīng)成功運(yùn)用于某電力企業(yè)的安全工器具監(jiān)控，運(yùn)行穩(wěn)定，達(dá)到了設(shè)計(jì)的預(yù)期目的。
標(biāo)簽： AVR 單片機(jī) 監(jiān)控 系統(tǒng)設(shè)計(jì)
上傳時(shí)間： 2013-11-05
上傳用戶(hù)：blacklee
針對(duì)目前汽車(chē)追尾事件頻發(fā)問(wèn)題，提出一種防汽車(chē)車(chē)前和車(chē)后追尾的安全裝置設(shè)計(jì)。該設(shè)計(jì)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(chē)速傳感器、激光雷達(dá)測(cè)距裝置和MMA7260QT加速度傳感器，能夠兼顧車(chē)前和車(chē)后，摒棄以往設(shè)計(jì)中只考慮車(chē)前或車(chē)后單一性缺點(diǎn)，尤其適用于高速、夜晚或新手行車(chē)。 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(shí)間： 2013-10-14
上傳用戶(hù)：GavinNeko
提出了一種基于C8051F320的列車(chē)安全巡檢儀的設(shè)計(jì)方案，詳細(xì)闡述了巡檢儀的各個(gè)模塊的硬、軟件設(shè)計(jì)。巡檢儀集信息采集、軸溫檢測(cè)、照明和記錄存儲(chǔ)等功能于一體，實(shí)現(xiàn)了對(duì)列車(chē)安全巡檢工作有效的監(jiān)督和科學(xué)管理。系統(tǒng)軟件采用C51編寫(xiě)，對(duì)單片機(jī)進(jìn)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.
標(biāo)簽： C8051F320 列車(chē) 儀的設(shè)計(jì) 巡檢
上傳時(shí)間： 2013-12-22
上傳用戶(hù)：落花無(wú)痕
摘要：本文闡明了單片機(jī)在電力系統(tǒng)安全統(tǒng)計(jì)上的應(yīng)用與設(shè)計(jì)方法。幾年來(lái)，通過(guò)一些單位的實(shí)際應(yīng)用，已證實(shí)了使用單片機(jī)進(jìn)行自動(dòng)控制的優(yōu)越性。 關(guān)鍵詞：?jiǎn)纹瑱C(jī)；自動(dòng)控制；軟件
標(biāo)簽： 單片機(jī) 電力 系統(tǒng)安全
上傳時(shí)間： 2013-11-07
上傳用戶(hù)：wenyuoo
摘要: 本文在研究了網(wǎng)絡(luò)安全的國(guó)內(nèi)外有關(guān)情況后對(duì)網(wǎng)絡(luò)安全技術(shù)進(jìn)行了探討,介紹了一種簡(jiǎn)單而實(shí)用的網(wǎng)絡(luò)安全產(chǎn)品,添補(bǔ)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(mén),為網(wǎng)絡(luò)安全做出了貢獻(xiàn).關(guān)鍵詞: 網(wǎng)絡(luò);安全;Internet;黑客;物理隔離;MT8870
標(biāo)簽： 網(wǎng)絡(luò) 安全產(chǎn)品
上傳時(shí)間： 2013-11-20
上傳用戶(hù)：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(biāo)簽： FPGA 安全系統(tǒng)
上傳時(shí)間： 2013-11-05
上傳用戶(hù)：維子哥哥
FPGA 具有輕松集成與支持新協(xié)議和新標(biāo)準(zhǔn)以及產(chǎn)品定制的能力，同時(shí)仍然可以實(shí)現(xiàn)快速的產(chǎn)品面市時(shí)間。在互聯(lián)網(wǎng)和全球市場(chǎng)環(huán)境中，外包制造變得越來(lái)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(guò)度構(gòu)建以及篡改已經(jīng)成為主要的安全問(wèn)題。據(jù)專(zhuān)家估計(jì)，每年因?yàn)榧倜爱a(chǎn)品而造成的經(jīng)濟(jì)損失達(dá)數(shù)十億美元。國(guó)際反盜版聯(lián)盟表示，這些假冒產(chǎn)品威脅經(jīng)濟(jì)的發(fā)展，并且給全球的消費(fèi)類(lèi)市場(chǎng)帶來(lái)重大影響。本白皮書(shū)將確定設(shè)計(jì)安全所面臨的主要威脅，探討高級(jí)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(hù)您的產(chǎn)品和利潤(rùn)。
標(biāo)簽： Spartan FPGA 267 DSP
上傳時(shí)間： 2014-12-28
上傳用戶(hù)：松毓336
Spartan-3AN 器件帶有可以用于儲(chǔ)存配置數(shù)據(jù)的片上Flash 存儲(chǔ)器。如果在您的設(shè)計(jì)中Flash 存儲(chǔ)器沒(méi)有與外部相連，那么Flash 存儲(chǔ)器無(wú)法從I/O 引腳讀取數(shù)據(jù)。由于Flash 存儲(chǔ)器在FPGA 內(nèi)部，因此配置過(guò)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(jì)安全的起點(diǎn)，因?yàn)闊o(wú)法直接從Flash 存儲(chǔ)器拷貝設(shè)計(jì)。
上傳時(shí)間： 2013-11-04
上傳用戶(hù)：sammi
為了提高Linux操作系統(tǒng)的網(wǎng)絡(luò)安全性，對(duì)Linux系統(tǒng)的安全機(jī)制、網(wǎng)絡(luò)安全問(wèn)題、主要攻擊方式進(jìn)行了詳細(xì)分析，提出了基于Linux系統(tǒng)用戶(hù)管理、文件管理、預(yù)防攻擊、數(shù)據(jù)備份等切實(shí)可行的網(wǎng)絡(luò)安全策略，增強(qiáng)了Linux系統(tǒng)的網(wǎng)絡(luò)安全性，達(dá)到了較好的效果。
標(biāo)簽： Linux 策略 網(wǎng)絡(luò)安全
上傳時(shí)間： 2013-12-18
上傳用戶(hù)：weiwolkt
隨著3G應(yīng)用的快速發(fā)展，移動(dòng)通信系統(tǒng)的安全性至關(guān)重要， 特別是針對(duì)安全敏感的應(yīng)用。本文研究了第三代移動(dòng)通信系統(tǒng)的信息安全機(jī)制， 包括第三代移動(dòng)通信系統(tǒng)面臨的信息安全威脅等。在此基礎(chǔ)上對(duì)以3G智能手機(jī)為代表的移動(dòng)終端的安全使用提出了一些方法。
上傳時(shí)間： 2013-11-20
上傳用戶(hù)：nairui21
蟲(chóng)蟲(chóng)下載站版權(quán)所有 京ICP備2021023401號(hào)-1
