工业设备远程监控中的数据压缩研究

针对大型工业翻车机设备远程监控系统中实时数据传输效率的问题,提出了一种对字符数据和图像采用改进的LZW算法压缩、对时间属性采用时间预测压缩算法进行压缩的方法。其中,改进的LZW算法主要是对构造的字符编码表的长度进行动态分配,并建立父亲指针索引和HASH索引;而时间预测编码压缩方法主要是对时间属性数值进行了压缩。最后采用检验数据压缩性能的指标,通过实例验证改进的LZW算法的数据压缩效果。实验结果表明,改进的LZW算法较WINRAR压缩方法具有较好的数据压缩效果。

Research on Data Compression in Remote Monitoring and Control of Industrial Equipment

Aiming at the problem of real-time data transmission efficiency in remote monitoring and control system of large industrial dumper equipment, a method of compressing LZW algorithm for character data and image and compressing time attribute with time prediction compression algorithm is proposed. Among them, the improved LZW algorithm is mainly to dynamically allocate the length of the constructed character encoding table, and establish the father pointer index and HASH index. The time prediction coding compression method is mainly to compress the time attribute values. Finally, the data compression effect of the improved LZW algorithm is verified by an example using the indicators for checking the data compression performance.