| 数据压缩技术在船舶电力监控系统中的应用 |
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| 引用本文： | 王永臻,孙亮清. 数据压缩技术在船舶电力监控系统中的应用[J]. 上海船舶运输科学研究所学报, 2020, 43(1): 55-60 |
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| 作者姓名： | 王永臻 孙亮清 |
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| 作者单位： | 上海船舶运输科学研究所舰船自动化系统事业部,上海200135;上海船舶运输科学研究所舰船自动化系统事业部,上海200135 |
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| 摘 要： | 采用数据压缩技术可有效减少船舶电力监控系统监测的数据量,提高现场总线网的通信效率。根据不同压缩方法的特点压缩船舶通信中不同类型的数据,其中对开关量和电力主干网等数据采用10进制霍夫曼编码的压缩方式压缩;对包含多测点的模拟量数据采用基于旋转门算法的监控数据的压缩方式压缩;对电能质量等数据采用小波变换的压缩方式压缩。仿真结果表明,采用该方案能实现对数据的有效压缩,节约网络宽带。
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| 关 键 词： | 数据压缩 无损压缩 旋转门 小波变换 |
Application of Data Compression Method in Ship Power Monitoring System |
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| WANG Yongzhen,SUN Liangqing. Application of Data Compression Method in Ship Power Monitoring System[J]. Journal of Shanghai Scientific Research Institute of Shipping, 2020, 43(1): 55-60 |
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| Authors: | WANG Yongzhen SUN Liangqing |
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| Affiliation: | (Warship Automatic System Division, Shanghai Ship and Shipping Research Institute, Shanghai 200135, China) |
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| Abstract: | The number of monitoring devices are growing as the development of intelligent ship,so is the volume of monitoring data.Data compression becomes necessary measure to improve communication efficiency.Appropriate data compression algorithms are selected according to the types of data.On-off type data and the information of power backbone are compressed by decimal Huffman coding,and the analog data by a SDT(Swinging Door Trending)algorithm adapted to ship monitoring data.The power quality data are compressed by wavelet compression algorithm.Simulations show that combining use of those algorithms can effectively reduce the volume of data. |
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| Keywords: | data compression lossless compression SDT wavelet transform |
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