基于單片機的智能小車外文文獻翻譯(編輯修改稿)

　

【文章內容簡介】 ime it has lower output saturation pressure drop and the static electricity ,The builtin clamp a diode can release the perceptual load of reverse current impulse ,making it the drive relays ,dc motors ,stepping motor or switch power tube the use of safe and reliable .Follow tracing car system to mon AT89C51, plementary with relatively simple ponents and circuit design ,the smooth pletion of follow under the premise of tracing function ,and fully considered appearance ,costs ,so most of the circuit car by manual welding is plete .In the design ,we never in a circuit increase redundant functions ,but retained various hardware interface and software subroutines interface to facilitate the expansion and development after.2. System hardware design motor driver module designIn making intelligent car, right wheel respectively with two speed and Torque basic identical dc motor driven deceleration. bolton trunklid spoiler Department to install a direction wheel, then through the I/O mouth to control tow dc slowing down Motor speed and steering can be achieved on the car to the left, turn right and straight line.Motor drive using a integrated electrical machine flooding dynamic core slice L 298 N. L298N is ST the production of the pany, the internal containing four channel logical drive circuit, it is a kind of tow phase four phase motor drive, namely the special contains tow H bridge of high voltage large current mander bridge type drive，acceptance criteria TTL logic level signals, be driven 46V, 2A below the motor. tracing module designTracing module mainly posed by photoelectric sensor reflex, Photoconductive resistance of the resistance of the light with the surrounding environment changes, when the LTT white lines above, light emission strongly。 The LTT black line above, light emission are relatively weak. So when photoconductive resistance in white line and black line above the elements will occur significantly changes, the resistance changes value after parator can output high level. But this way environmental influences big, work is not stable. This article actual use is RPP220 type reflex sensors made tracing module.RPR220 is an integration of reflective photoelectric detector, transmitter is a gas infrared light emitting diode and the receiver is a high sensitivity silicon photoelectric triode flat. When the light emitting diode reflected back, triode conduction and output low level obstacle avoidance module designObstacle avoidance module mainly posed by infrared reflection sensor. Infrared reflection sensor by one infrared tubes and photoelectric diode constitute, infrared tubes out to meet the infrared object reflective sex strong after be turned back, by photoelectric diode receiving, cause photoelectric diode current increases, light born this change into voltage signal, it could be processor receives and processing. remote control modul