摘要
以16位低功耗单片机MSP430F5438为控制核心,以直流电机作为驱动的动力,设计了智能小车并采用脉宽调制(PWM)方式实现对车速的准确控制;使用灰度传感器来检测起点/终点标志线及转弯/超车标志线;在超车区使用超声波传感器来测量两辆小车之间的距离,并在轨道的超车区内进行超车;使用无线通信模块来进行两车之间的超车通信,有效避免两车相撞并顺利实现超车;用电子指南针模块来对两小车进行精确定位及转弯控制和在行车道上方向的校正。通过对样机进行了测试,结果表明:智能小车可以实现单车绕圈行驶、两车防撞前后行驶、两车在规定的区域完成超车等功能,且其性能稳定、抗干扰性强,在无人驾驶系统方面得到广泛应用。
A smart car is designed based on 16 bit low power consumption MCU MSP430F5438 as control core,DC motor as driving power,and uses pulse width modulation（ PWM） mode to achieve accurate control of speed; use gray sensor to detect the start/finish line and turn/overtaking sign line; using ultrasonic sensor to measure distance in the overtaking area between two cars,and track overtaking area for overtaking; overtaking communication between two vehicles using wireless communication module,which effectively avoid the collision between two cars and smoothly realize overtaking; with electronic compass module for precise positioning and turning control of the two car. The results show that smart car can achieve functions of cycling criterion driving; driving two car crashes before and after,two vehicles in the specified area complete overtaking. The control system has stable performance,strong anti-interference. It has a broad application in the field of driverless control system.
出处
《传感器与微系统》
CSCD
2016年第12期110-112,共3页
Transducer and Microsystem Technologies
关键词
光电传感器
超声波传感器
电子指南针
无线通信
photoelectric sensors
ultrasonic sensors
electronic compass
wireless communication
