说明：  SDI—12协议解析，通过该程序可以解析SDI-12命令，通过RS232串口，波特率1200bps，数据格式7BIT数据位1bit校验位
(SDI-12 protocol analysis, the program can be resolved through the SDI-12 commands through the RS232 serial port, baud rate of 1200bps, data format 7BIT data bits parity bit 1bit)