实现串口通信功能，和下位机实现通信。并连接数据库，把采集来的数据存储进数据库。-Serial communication function, and lower machine communication. And connect to the database, the collected data is stored into a database.

从CRM 接口表中读取工单，生成随机鉴权码并写入小灵通，实现小灵通写码，主要有串口通信编程、动态链接库调用、数据库读写等功能(From the CRM interface table, we can read jobs, generate random authentication codes and write PHS, and realize PHS coding, mainly including serial communication programming, dynamic link