外文翻譯----基于單片機(jī)的電動智能小車-單片機(jī)-資料下載頁
2025-05-12 11:38本頁面
【導(dǎo)讀】L9110芯片和LM324比較器等。本設(shè)計(jì)采用AT89C51單片機(jī)作為智能小車核心控制器。駛過程中保持直線運(yùn)動且不會脫離蹺蹺。動車的智能控制。這種方案能實(shí)現(xiàn)對電動車的運(yùn)動狀態(tài)進(jìn)行實(shí)時控。制，控制，靈活可靠，精度高，可滿足對系統(tǒng)的各項(xiàng)要求。器，簡稱PWM變換器。由于PWM調(diào)速系統(tǒng)的開關(guān)頻率較高，僅靠。連續(xù)，系統(tǒng)的低速運(yùn)行平穩(wěn)，調(diào)速范圍較寬，可達(dá)1：10000左右。同樣由于開關(guān)頻率高，若與快速響應(yīng)的電機(jī)相配合，系統(tǒng)可以獲得很寬的頻帶，因此快速響應(yīng)性能好，動態(tài)抗擾能力強(qiáng)。的發(fā)展方向，本設(shè)計(jì)采用了H型單極型可逆PWM變換器進(jìn)行調(diào)速。由于黑線和白紙對光線的反射系數(shù)不同可根據(jù)接收到的。在小車行駛過程中不斷地向地面發(fā)射紅外光，當(dāng)紅外。光遇到白色地面時發(fā)生漫發(fā)射，反射光被裝在小車上的接收管接收；當(dāng)兩個傳感器同時檢測到光時，直線前進(jìn)。則向右糾正方向。整機(jī)可靠性提高。電機(jī)驅(qū)動采用片集成電機(jī)驅(qū)動芯片L298N。轉(zhuǎn)及停止行駛的目的。
【正文】 e into voltage signal, it could be processor receives and processing. 2. 4 remote control module design This module will launch end USES high sensitive H L 5000 type universal television remote control, the receiver using receive frequency for 38kH z39。s receiving head 1838, this module and the single chip puter interface is very convenient. In addition, for the red outside meet after harvest of plait code letter number, the department tasseled set when shipped with project of AT89C52 single chip microputer external interruption to receive, signal the falling edge of trigger external interruption. In order to recognize a plete key signal, must for each coding pulse width were measured with discriminant receives the pulse is! 0 still! 1 ?, the microcontroller timer/counter to measuring pulse width. Timer/counter except ?points than can be set, from except 2 to except 2048, measurable pulse width can reach 500m s. This paper set except points for 12, namely than 12 points frequency, because the external clock is about 12MH z, clock cycle for 1 s, so the timer/counter for 1 per timing once s. 2. 5 alarm module design Alarm module core chip 110 IC, can choose application in automobile, motorcycle, alarms, personal riot device, door magic alarm device and etc. 3. System software design This system software modular structure, the main program, initial antifuzzy procedures, interrupt subroutines, delay subroutines, buttons pronunciation subroutines, buttons scanning subroutines constitutes. 3. 1 tracing subroutines design Tracing module is designed by the left right photoelectric sensor output terminal receiving monolithic machine respectively, P 22 and P23 tube feet, then through the microcontroller programming, produce PWM control signal, through L 298 control motor speed, let the car to move forward, left turn, turn right and stop driving purpose. 3. 2 avoid barrier of programming Obstacle avoidance module is designed by the infrared reflection sensor module around the output terminal receiving MCU respectively P20 and P21 tube feet, then through the microcontroller programming, produce PWM control signal, through L298 control motor speed, let the car to move forward, left turn, turn right and stop driving purpose. 3. 3 remote subroutines design Remote control module is designed by the infrared sensor 1838 an output terminal of the receiving MCU P32 tube feet, then use allpurpose remote control on the remote control, then let microcontroller decoding, produce PWM control signal, through L298 control motor speed, let the car to move forward, left turn, turn right and stop driving purpose. 4 . Summary Adopts singlechip, using photoelectric sensor and infrared reflection sensor was designed as a detection system, can realize automatic homing line to walk, automatic obstacle avoidance, alarm and remote control functions such as intelligent car. This design is the obvious advantages of simple circuit, reliability, low cost, and very easy to function of further perfecting and expansion
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