车载终端系统及电源EMC设计  

EMC Design of Vehicle Terminal System and Power Supply

作　　者：黄慧敏 HUANG Huimin(Shanghai ShiHang Network Technology Co.,Ltd.,Shanghai 201702,China)

机构地区：[1]上海势航网络科技有限公司,上海201702

出　　处：《信息与电脑》2022年第1期198-201,共4页Information & Computer

摘　　要：为检测疲劳驾驶、车辆超速等违法行为,并保障车辆行驶安全以及更方便地开展道路交通事故分析鉴定,本文采用NXPLPC43xx系列主芯片设计了一款车载终端系统。该系统支持北斗双模定位通用分组无线业务(General Packet Radio Service,GPRS)、控制器局域网络(Controller Area Network,CAN)总线采集等功能。本文主要介绍了车载系统的硬件设计,包括芯片的选型、BUCK电源芯片外围电路设计、印刷电路板(Printed Circuit Board,PCB)的EMC的设计等,并阐述了产品功能的软件框架功能。测试实验证明:车载终端可以通过平台实时监控车辆数据,满足产品系统设计要求。In view of the fatigue driving, speeding and other illegal behaviors, in order to ensure the safety of vehicles and the analysis and identification of road traffic accidents, this paper uses NXP LPC43 xx series of main chips to design a vehicle terminal system, the system supports BD dual-mode positioning, GPRS wireless communication、CAN bus acquisition and other functions.This paper mainly introduces the hardware design of the vehicle system, including chip selection, BUCK power chip peripheral circuit design, PCB EMC design, etc. and expounds the software framework function of product function realization. The vehicle terminal can monitor vehicle data in real time through the platform to meet the requirements of product system designing.

关 键 词：GPRS CAN总线 BUCK电源 PCB EMC 

分 类 号：TN929.5[电子电信—通信与信息系统]