中文摘要：

为了应对油罐车运输油品失窃频发的问题,设计了一种电子铅封系统。安装在油罐车上的主板可以将当前地理位置通过4G技术上传给服务器,若位置合法则控制从板进行解封。球阀经改装可以检测阀门与铅封状态,实现自动施封功能。主板采用集成4G与全球卫星导航系统（GNSS）的EC20模块。主从板之间采用Zig Bee无线通信,从板可以零功耗待机。结合上位机软件,系统可以对油罐车进行有效监控管理。

英文摘要：

In order to prevent oil theft during tank truck transportation, an electronic seal system is proposed. The mainboard on the truck can upload the current location to the server through 4G technology. If location is valid, the mainboard will command the slave board to unlock. The ball valve is modified to collect the state of the valve and seal, as the basis for auto sealing function. The mainboard adopts EC20 module which combines 4G technology and Global Navigation Satellite System （GNSS）. The main and slave board communicate through ZigBee and the slave board can stand by with zero power consumption. With the upper computer software, the system can manage the tank trucks effectively.