摘要
目的设计一种汽车倒车防撞系统,可实时显示汽车与目标障碍物的距离,并可进行语音提示。方法系统以AT89S52单片机为主控芯片,由键盘设置安全距离,利用超声波传感器探测目标障碍物信息,由18B20进行温度检测,经温度补偿后确定与目标障碍物距离,实时显示距离,并由1760语音模块提示测量距离与安全距离的关系,提醒使用者注意调整距离。结果给出了系统的详细硬件设计方案及主要软件流程图,采用温度补偿,在倒车系统中满足精度要求。结论本系统结构简单,价格低廉,具有智能语音播报功能和距离显示功能,可用于机动车倒车等领域。
Objective-To design an automotive collision avoidance system which can display the distance between the ear and the target obstacle and make voice prompts in real time. Methods-In the system, the mcu AT89S52 is used as the main chip, the value of safe distance is set by the keyboard, the information of target obstacles is detected by ultrasonic sensor. After being compensated by tem- perature detection module of the chip 18B20, the distance from the target obstacle is determined and displayed with 18B20 Circuit in real time. The 1760 voice module circuit is used to prompt the rela- tionship between the measured distance and the safety distance and to alert the user to adjust the dis-tance. Results-The detailed design scheme of hardware and the flowcharts of software are presented. The technology of temperature compensator which is used in the automotive collision avoidance system can meet the accuracy requirements. Conclusion-The system boasts simple structure, low cost, dis-tance display and voice prompt, so it can be used in the field of automobile back-draft anticollision.
出处
《宝鸡文理学院学报（自然科学版）》
CAS
2013年第2期49-52,共4页
Journal of Baoji University of Arts and Sciences(Natural Science Edition)
关键词
超声波测距
语音模块
温度补偿
ultrasonic detection distance
voice module
temperature compensation
