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(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)合霍爾式車速傳感器、激光雷達(dá)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(jì)中只考慮車前或車后單一性缺點(diǎn)，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.
介紹一種以Atmel公司的Attiny13為處理器的投影儀防盜器設(shè)計(jì)方案。該防盜器具有功耗低，功能完整，防盜效果良好等特點(diǎn)，除具有報(bào)警功能外，防盜器還具有以無線方式向主機(jī)發(fā)送報(bào)警信號的功能。采用315MHz發(fā)射模塊實(shí)現(xiàn)無線信號發(fā)送。該投影儀防盜器可適應(yīng)眾多廠家生產(chǎn)的防盜器主機(jī)。
Abstract:
This paper introduces the design scheme of overhead projector's anti-theft device which users ATMEL company’s Attiny13as processor.This anti-theft device features low powerloss，functional integrity，good effect of anti-theft.In addition to its own with alarm functions，the anti-theft device also has alarm function which can send alarm signal to the host through wireless way.It sends wireless signal using315MHz transmitting module，so this overhead projector’s anti-theft device is adapted to anti-theft device host produced by many manufacturers.
介紹了一種基于C8051F020單片機(jī)的多路壓力測量儀。該測量儀選用電阻應(yīng)變式壓力傳感器采集壓力信號，并經(jīng)放大電路處理后送入C8051F020單片機(jī)，再由C8051F020單片機(jī)內(nèi)部的A/D轉(zhuǎn)換器將采集到的壓力信號進(jìn)行模數(shù)轉(zhuǎn)化，然后分別對數(shù)據(jù)進(jìn)行存儲和顯示。該測量儀能測量6路壓力信號，并且各測量點(diǎn)都能單獨(dú)檢測和設(shè)置。由于采用了C8051F020單片機(jī)，簡化了硬件電路，增強(qiáng)了抗干擾能力，使得測量儀具有測量精度高，沖擊小等特點(diǎn)。
Abstract:
A measurement apparatus for multi-channel pressure based on single chip microcomputer is introduced.It can measure 6 channels signal of the pressure，and the pressure measure points can be detection and located individually.The pressure signal sampling is obtained by resistor stress-type pressure sensors，the digital signals of 6 channels are collected through amplifying and adjustment circuit of pressure signals and internal integrated A/D converter of MCU.Finally，and it realizes the function to store and display data separately.C8051F020 was used to made hardware circuit simple，and it also enhanced the anti-interference ability.It features high precision and little impact.
基于CC1110單片機(jī)公交報(bào)站系統(tǒng)主要由CC1110單片機(jī)最小系統(tǒng)和WT588D語音模塊組成，提出了如何實(shí)現(xiàn)語音報(bào)站，通過無線通信SimpliciTI網(wǎng)絡(luò)協(xié)議實(shí)現(xiàn)公交站臺的自動播報(bào)和OLCD液晶顯示公交運(yùn)行的各類信息。結(jié)果表明，該公交報(bào)站系統(tǒng)報(bào)站準(zhǔn)確率99%，價(jià)格比同類產(chǎn)品下降了300%以上，系統(tǒng)組成結(jié)構(gòu)簡單，提高了系統(tǒng)的抗干擾性和穩(wěn)定性，也便于攜帶。
Abstract:
The bus stop announcement system based on CC1110 MCU is composed of CC1110 MCU minimum system and WT588D voice module. How to achieve the voice announcing is put forward.The bus-stop will announce automatically and display on the OLCD by means of wireless communication SimpliciTI network protocol. As a result， the bus station stop announcement systems reported 99% accuracy rate， price of similar products declined by 300% or more， system of simple structure， improve the anti-jamming and stability of the power system， it is also portable.
一種基于ST62單片機(jī)的稱重顯示控制器A Weighing Display Controller Based on ST62 Single Chip Computer祛 FA(上海時(shí)博飛奧控制系統(tǒng)有限公司，上海201100)摘要在介紹了基于ST62單片機(jī)的基礎(chǔ)上，詳細(xì)描述了稱重顯控制器的硬件設(shè)計(jì)和軟件設(shè)計(jì)思路。該控制器結(jié)構(gòu)簡單、操作方便、抗擾能力強(qiáng)等優(yōu)點(diǎn);具有較好的推廣應(yīng)用價(jià)值。關(guān)鍵詞稱重顯示控制儀ST62單片機(jī)硬件設(shè)計(jì)軟件設(shè)計(jì)Abstract Ont heb asiso fin torductiono fST 62s inglec hipc omputer,th ed esignc oncrptof h ardwarea nds oftwarefo rw eighingd isplayc ontorleris d escrbed.The controler features simple structure, ease operation, powerful capability of anti-interference, etc.，it is wealth to be promoted into practicalapplicationsKeywords We妙噸display0 引言ST62s inglec hip Hardwared esign Softwaer design備 份 振 蕩器，振蕩器保護(hù)電路，上電復(fù)位及低壓檢測復(fù)稱 重 顯 示控制器是一種具有數(shù)字顯示、開關(guān)量輸出、定值控制和通信功能的以微機(jī)為操作核心的稱重控制裝置。它是電子衡器的重要基礎(chǔ)部件，直接影響電子衡器及電子稱重系統(tǒng)的功能和性能。與合適的傳感器及承重傳力復(fù)位系統(tǒng)組合可組成配料秤、料斗秤、定值秤、平臺秤、汽車秤等，廣泛應(yīng)用于電力、化工、建筑、冶金、交通運(yùn)輸、食品、軍工等部門，是進(jìn)行自動稱重配料控制和生產(chǎn)過程自動化必不可少的重要檢測、控制裝置。隨著 稱 重 計(jì)量自動化水平的提高，對稱重顯示控制器的要求也越來越高。為實(shí)現(xiàn)低漂移、高穩(wěn)定，本控制器采用低漂移、高增益放大器AD620和高分辨率的A/D轉(zhuǎn)換器CS5550。為提高穩(wěn)定性和可靠性，采用集成度高的、抗干擾能力強(qiáng)的ST62單片機(jī)。
單片機(jī)系統(tǒng)“PC”失控的軟件措施Software Measure of GettingO uto fC ontrolfo r“PC"in S ingleC hipC omputerS ystem謐 加 春 王 曉 基 雷 小 華(江 西 理 工 大 學(xué)機(jī) 電 工 程 學(xué) 院 ，贛 州 34 10 00)摘要單片機(jī)系統(tǒng)在實(shí)際工業(yè)現(xiàn)場中可能遇到各種干擾和自身的隨機(jī)性故障。現(xiàn)場惡劣的環(huán)境有可能使計(jì)算機(jī)系統(tǒng)發(fā)生異常，計(jì)算機(jī)程序指針“PC”失控就是常見的故障之一，如果發(fā)生“PC”失控，將導(dǎo)致CPI工作混亂，釀成嚴(yán)重的事故。研究了“PC”失控的原因，并指出軟件抗干擾的幾種方法，有效保證單片機(jī)系統(tǒng)的正常工作。關(guān)鍵詞單片機(jī)“PC”失控抗干擾Abstract Inp racticalin dustrialfi elds,th ereis v ariousin terferencea fectingo perationo fsi nglec hipc omputersy stemsa ndt hec omputersy stems。fac噸random faults飾themselves. It is very common that the severe environment makes the computer systems abnormal. The program counter "PC"gettingo utof co ntorlis on eo fth ec ommonfa ults.If th isoc curs,C PUw ouldb eru nningo utof or deran din torducesse riousan cient.T hec ausesof " PC"geting out of control， studied in this paper and some countermeasures of anti-interference師software are given to ensure single chip computer systemworking properly.Keywords Single。飾computer Porgramc ounter"P C" Anti-interfeernc
在設(shè) 計(jì) 和 開發(fā)單片機(jī)系統(tǒng)時(shí)，一般難以周全地預(yù)計(jì)單片機(jī)系統(tǒng)在實(shí)際工業(yè)現(xiàn)場中可能遇到的各種干擾和自身的隨機(jī)性故障。因此，除了采取防止和抑制干擾的各項(xiàng)措施外，還應(yīng)該借助于軟件措施克服某些干擾，系統(tǒng)還應(yīng)具備迅速自行恢復(fù)的能力。本文介紹的應(yīng)對單片機(jī)系統(tǒng)PC失控的軟件措施，設(shè)計(jì)靈活，節(jié)省硬件資源，能保證測控系統(tǒng)長期可靠地運(yùn)行。MC S- 5 1單片機(jī)以其優(yōu)良的性能價(jià)格比大量應(yīng)用于工業(yè)現(xiàn)場測試和控制領(lǐng)域。但是，現(xiàn)場惡劣的環(huán)境有可能使計(jì)算機(jī)系統(tǒng)發(fā)生異常，計(jì)算機(jī)程序指針PC失控就是常見的故障之一，一旦發(fā)生PC“走飛”，計(jì)算機(jī)系統(tǒng)就會出現(xiàn)工作混亂，釀成嚴(yán)重的事故。為 了 在 CP 失控時(shí)盡量減少由此帶來的不利影響，并盡快使系統(tǒng)恢復(fù)正常，需要采取一定的軟件措施和硬件措施。常見的硬件措施有“看門狗”電路。軟件措施設(shè)置的前提條件是:①在干擾作用下，微機(jī)系統(tǒng)硬件部分不會受到任何損壞，或者損壞部分設(shè)置有監(jiān)測狀態(tài)可供查詢;②程序區(qū)不會受到干擾侵害。單片機(jī)系統(tǒng)的程序和表格以及重要的參數(shù)均設(shè)置在ROM區(qū)，不會因干擾的侵人而改變;③ RAM區(qū)中的重要數(shù)據(jù)不會被破壞，或者雖然被破壞，但是可以重新建立。
