public function Save(WQDChannel $wqdChannel)
 {
     $SQL = self::$INSERT;
     $conn = self::$db->getConnection();
     $stmt = $conn->prepare($SQL);
     $stmt->bindValue(':dataSeq', $wqdChannel->getFileDataSeq());
     $stmt->bindValue(':channelNumber', $wqdChannel->getChannelNumber());
     $stmt->bindValue(':channelName', $wqdChannel->getChannelName());
     $stmt->bindValue(':channelValue', $wqdChannel->getChannelValue());
     $stmt->bindValue(':channelStatus', $wqdChannel->getChannelValue());
     try {
         $stmt->execute();
     } catch (Exception $e) {
         return $e->getMessage();
     }
     $error = $stmt->errorInfo();
 }