外文翻譯--基于單片機的學(xué)習(xí)式倒計時器(完整版)
【正文】 。該系統(tǒng)設(shè)計的是學(xué)習(xí)式倒計時器。當(dāng)有信號輸入時，光耦 TIL117 的 5 腳（ C）輸出為低電平信號，通過單片機檢測低電平的時間就是紅燈的時間。由于并聯(lián)后可達上百 mA，必須加驅(qū)動電路。 （ a） MAX813L 引腳 （ b）看門狗電路連接 模式選擇電路 針對不同交通路口顯示要求，有 99 s， 40 s， 20 s， 10 s 倒計時顯示方式，采用平撥型撥碼開關(guān)來實現(xiàn)模式選擇。 原文： Studying Method Counting Down Display Unit Based on MCU ZHANG Guohua, ZHANG Chi, WU Dongfang [literature source] Coal technology, Coal Technology, editorial department mailbox in 2020 05 issues Abstract:Introduces a learning style based on STC10F04XE countdown controller, the controllerhas advantages of simple structure and reliable work. Hardware built around the STC10F04XEby the microcontroller I/O port control signal is given, the driver countdown display. Accordingto the characteristics of studying method counting down display, the preparation of theinstruction in order to achieve the required system operation functions. Key words:MCU。s time and the demonstration should not surpass 2 signal periods, should demonstrate the black screen in the study countdown. After the road traffic signal cybertron interrupt output or changes over to yellow dodges the control, the countdown ought to be able in the current signal phase closure time to demonstrate the black screen. In view of the above request, used the C language to pile corresponding control software. Software design main flow as shown in Figure 8. The system can study the signal light time, the study black screen, demonstrates the corresponding countdown time in the corresponding signal bright time interval, when the yellow light is bright closes the demonstration. Can through dial the code switch choice different display mode. The interrupt subroutine pletes red, the green time time study function and demonstration countdown function . Interrupt subroutine flow chart like chart 9.
畢業(yè)設(shè)計相關(guān)推薦
鄂ICP備17016276號-1