In communications , a circuit connection between two , and only two , terminal installations 在通信技術(shù)中,一種電路連接法,每端只有一個(gè)終端計(jì)算站。
A circuit connection by which the outputs of several circuits are connected at one point so that the output of a dotted and circuit will become1 only when the outputs of all circuits are1 一種線路連接方法,將幾個(gè)線路的輸出端連接在同一點(diǎn)上,只有當(dāng)所有線路的輸出都為“ 1時(shí),點(diǎn)“與線路的輸出才為“ 1 。
This chapter detailedly introduces circuit connection principle diagrams between mcu and other peripheral equipments such as keyboard module , upd16682a module , wavecom gsm module and gps - oem module , so does the mutual communication programs between them 詳細(xì)介紹了mcu與各外圍硬件:鍵盤、 upd16682a模塊、 wavecomgsm模塊、 gps - oem模塊的電路原理連接圖和彼此進(jìn)行通信的程序設(shè)計(jì)。
Generally speaking , we may do it according to such a procedure as first detection of the electric circuit connection quality , next detection of the sensor and the actuator , and final detection of the electrically controlled unit 一般來(lái)說(shuō),我們都可以按照首先檢測(cè)電路連接質(zhì)量,其次檢測(cè)傳感器、執(zhí)行器,最后檢測(cè)電控單元這樣的程序來(lái)操作。但是,由于汽車故障具有突發(fā)性、綜合性、差異性等特點(diǎn)。
Hereinbefore expatiate of software and hardware for the text is five parts , the heart of cmos type is elaborate recommendations , connection in the circuit of priphery , circuit connection between and cmos , means of programmer and software of corresponding , and the linchpin software upon which of source code 本文對(duì)以上五個(gè)部分的軟硬件設(shè)計(jì)作了詳細(xì)的闡述,詳細(xì)介紹了核心芯片的選型,外圍電路的連接,芯片與芯片之間的連接電路,程序設(shè)計(jì)方法和相應(yīng)的軟件,并給出了關(guān)鍵軟件的程序源代碼
If the chip remains sending state , it will take the data spread spectrum and modu - late , then sent forth by ad9768 . the chip can be controlled throug h writing data in the interior 87 registers . secondly , this paper designed control system of twice civil air defense alarm system . because the scm " s port number was limited and port driving power is feebleness , this design realizes nixie tube ' s display drive with keyboard management chip max7219 and realizes true time display with ds1302 , which can economize scm i / o port and make circuit connection simplicity 通過(guò)對(duì)其內(nèi)部87個(gè)寄存器寫入數(shù)據(jù)可對(duì)其進(jìn)行控制。其次,本文對(duì)二次人防警報(bào)系統(tǒng)控制系統(tǒng)進(jìn)行設(shè)計(jì),針對(duì)單片機(jī)端口數(shù)目有限、端口驅(qū)動(dòng)能力較弱等問(wèn)題,使用鍵盤管理芯片max7219實(shí)現(xiàn)數(shù)碼管顯示驅(qū)動(dòng),用ds1302實(shí)現(xiàn)真時(shí)鐘顯示,節(jié)省了單片機(jī)i / o口,電路連接簡(jiǎn)單。
At last , we gave the circuit connection method of web browse function and ethernet / rs232 gateway function and the detailed resolvent to improve the results of theory research . the result indicates that it is feasible to access internet with the method of micro controlling unit and virtual software package . this method will provide a new kind of resolvent to appliance accessing intemet , long - distance controlling and long - distance data collection 最后給出了實(shí)現(xiàn)網(wǎng)頁(yè)瀏覽功能和ethernet rs232網(wǎng)橋功能的實(shí)驗(yàn)線路連接方法及具體實(shí)驗(yàn)方案,來(lái)證明理論研究的結(jié)論。實(shí)驗(yàn)結(jié)果表明采用8位微控制器與虛擬軟件包相結(jié)合的方式接入internet是完全可行的,這將為家電上網(wǎng),遠(yuǎn)程控制,遠(yuǎn)程數(shù)據(jù)采集等提供一種新的解決方案。
In the course of design , we fully consider the actual conditions on the railway and take a series of corresponding measures to the concrete problem . such as we select high - accuracy microconvertor and have the converted function in succession data collecting system chip aduc812 , design v / f circuit and external a / d circuit . in anti - interference of the hardware , we try to disperse each function module to avoid interfering each other , adopt photoelectric isolated technology to dispel the circuit connection of input and output . in controlling we import arithmetic mean into strain wave algorithm and real computing technology of virtual value for sample treatment of data , that is using the software to smooth away interfere error and to calculate actual value , thus it makes the precision of the data improve greatly 在設(shè)計(jì)過(guò)程中,根據(jù)系統(tǒng)要求,充分考慮鐵路上的實(shí)際情況,針對(duì)具體問(wèn)題采取了一系列的相應(yīng)措施,如在器件選擇方面選用高精度microconvertor系列、具有adcdma連續(xù)轉(zhuǎn)換功能的數(shù)據(jù)采集微控制器芯片aduc812 ,設(shè)計(jì)了v f變換電路和外部a d轉(zhuǎn)換電路;在硬件抗干擾方面,將每個(gè)功能模塊盡量分散獨(dú)立開來(lái)以避免相互干擾、采用光電隔離技術(shù)消除輸入輸出通道上的電路聯(lián)系;在控制方面對(duì)于采樣數(shù)據(jù)的處理引入了算術(shù)平均值濾波算法和真有效值的計(jì)算方法,即通過(guò)使用軟件來(lái)濾除系統(tǒng)中有干擾造成的誤差并計(jì)算真值,從而使數(shù)據(jù)的準(zhǔn)確性得到極大地提高。