單片機(jī)外文翻譯--轉(zhuǎn)速表與單片機(jī)-單片機(jī)(參考版)
2025-01-23 07:57本頁面
【正文】 s choice situations. For the convenience putation must demonstrate data value Duan Ma, may transform again it the pression the BCD code, then in the data value which is going to demonstrate through the table lookup each pression BCD code transforms 8 sections of codes to deliver the demonstration buffer, finally passes through the serial port to deliver to the liquid crystal display module demonstrated measured speed or course. When design, should the overall evaluation measure the fast precisi。s signal impulse width (sensor transforms vehicle speed corresponding width signal impulse) realtime to survey, then calculates the speed and the course through the monolithic integrated circuit, again the obtained data storage to the serial port datacarrier storage, and will measure the speed by the serial port liquid crystal display module real time display. This design controls the demonstration speed or the course with two pressed keys. Considers the signal influences and so on weaken, disturbance, before the signal sends in the monolithic integrated circuit to deal with it to carry on the enlargement reshaping, then inputs again to the monolithic integrated circuit carries on measures fast. Monolithic integrated circuit determines input signal after the 7 timer T0 control function the cycle, again using monolithic integrated circuit39。s mouth line and the periphery ponent, simultaneously also simplified the demonstration part software programming. the system software including the monolithic integrated circuit and the liquid crystal module39。s establishment to carry on the control to the internal timer T0 work, like this can the precise surveying leave adds to the INT0 pin the pulse width (. to determine signal impulse cycle)。 The profile transformation and the wave shaping electric circuit uses for signal conversion Cheng Ke who and the monolithic integrated circuit connection TTL signal will enlarge。s operation and the control function, and uses the serial port liquid crystal display module real time display to measure the speed and the course speed odometer design proposal. Because this plan has used the serial port liquid crystal display module and EEPROM, as well as highly effective fast algorithm, thus may in saves the system resources and in the reduced program design foundation guarantees the measuring accuracy and system timeliness. This speed odometer by the signal pretreatment electric circuit, AT89C2051 monolithic integrated circuit, the serial port liquid crystal display electric circuit, the serial port data storage electric circuit and the system software is posed. And the signal pretreatment electric circuit contains the signal to enlarge, the profile transformation and 6 the wave shaping. System hardware diagram as shown in Figure 1. In the signal pretreatment electric circuit39。s year demand has also surpassed hundred million piece of quantities, this indicated that the 5 monolithic integrated circuit has the broad application prospect. This curriculum mainly aims at the present our countr
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