摘要
本文利用MSP430F169单片机作为核心控制单元，LDC1000转换器探测金属，SM-S4303R舵机驱动小车，构成探测小车控制系统。系统使用光电、超声波传感器检测小车运行的实时速度及位置；使用涡流传感器探测、定位金属物体；使用PID与PWM脉宽调制相结合的技术，调节舵机的转速及角度，达到对小车运行速度和运行方向的闭环控制；使用LCD1602液晶显示器显示各种参数及检测结果。运用小车自动寻迹功能，系统可检测一定区域内的金属物体，通过声光提示进行准确定位。多次测试结果表明，该系统测试精度较高，定位速度快，误差较小。
In this paper, the ultra-low-power microcontroller MSP430F169 made by TI is used as the core control unit, the inductance digital converter （LDC1000） is used as a metal detector, and the steering gear （SM-S4303R） is used as the car driver, supplemented by other peripheral devices. All the devices mentioned above constitute the detection car control system. The system uses photoelectric and ultrasonic sensors to detect the real-time speed and positon of the trolley. The eddy current sensing technology is used to realize the metal detection and positioning. The speed and angle of the steering gear are adjusted by using PID and PWM pulse width modulation technology. The car running speed and running direction are controlled in a closed-loop; LCD （LCD 1602） displays a variety of parameters and test results. Using car automatic tracking function, the system can detect a certain area of metal objects through the aeousto-optic prompts for accurate positioning. The results of several tests showed that the system has the characteristics of high precision, fast positioning and small error
出处
《现代科学仪器》
2017年第2期25-29,共5页
Modern Scientific Instruments
基金
国家自然科学基金项目（51677009）
