/// <summary>
        /// 解析从升降机发送到服务端的指令
        /// </summary>
        private COMMAND_FROME2S readCommandFromE2S(byte[] response)
        {
            COMMAND_FROME2S outCommand = COMMAND_FROME2S.LIFT_OUT_COMMAND_MIN;
            int             i          = 0;

            for (i = 0; i < response.Length; i++)
            {
                if ((COMMAND_FROME2S)response[i] < COMMAND_FROME2S.LIFT_OUT_COMMAND_MAX &&
                    (COMMAND_FROME2S)response[i] > COMMAND_FROME2S.LIFT_OUT_COMMAND_MIN)
                {
                    outCommand = (COMMAND_FROME2S)response[i];
                }
            }
            if (outCommand != COMMAND_FROME2S.LIFT_OUT_COMMAND_MIN)
            {
            }
            return(outCommand);
        }
        private void handleDataSerialPort()
        {
            try {
                int    count;
                byte[] response = null;
                sp.Write(common, 0, 4);
                while (!isStop)
                {
                    byte[] readBuffer = new byte[1];
                    count = sp.BytesToRead;
                    if (count != 8)
                    {
                        Thread.Sleep(1000);
                        continue;
                    }

                    response = new byte[count];
                    sp.Read(response, 0, count);

                    outCommand = readCommandFromE2S(response);

                    //如果读取到升降机异常, 不再向升降机发送命令
                    if (outCommand > COMMAND_FROME2S.LIFT_OUT_COMMAND_UP_DOWN)
                    {
                        AGVLog.WriteInfo("升降机异常 " + outCommand, new StackFrame(true));
                        continue;
                    }
                    if (dataCommand[0] > 0)                         //清空数据
                    {
                        sendCommand(dataCommand);
                        dataCommand[0] = 0;
                        dataCommand[1] = 0;
                    }
                    Thread.Sleep(200);
                }
            } catch (Exception ex) {
                Console.WriteLine(ex.ToString());
                handleLiftComException();
            }
        }