In bridge inspection using wireless technology, the sensor node carries very limited energy. In this paper, data compression technology to reduce the amount of communication data by sacrificing data accuracy is introd...
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In bridge inspection using wireless technology, the sensor node carries very limited energy. In this paper, data compression technology to reduce the amount of communication data by sacrificing data accuracy is introduced. The lossless data compressionalgorithm was chosen as the algorithm of the bridge inspection system, and the algorithm was further improved. In addition, we compared the compression rates and execution times of the huffman, Lempel-Ziv- Storer-Szymanski (LZSS), and improved Lempel-Ziv-Welch (LZW) algorithms. The results showed that the improved LZW algorithm is highly adaptable, accommodates any type of input data, and can make full use of the repeatability of data. Therefore, this lossless data compressionalgorithm is suitable for application in the wireless sensor networks of bridge inspection systems.
Current text messaging protocols over the world allow a rigid limit of 160 characters per SMS, using the default messaging system of the mobile. However this limit is often found to be too less under ordinary circumst...
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ISBN:
(纸本)9781424455379
Current text messaging protocols over the world allow a rigid limit of 160 characters per SMS, using the default messaging system of the mobile. However this limit is often found to be too less under ordinary circumstances and very often, to communicate effectively, a concatenated message needs to be sent. This, coupled with exorbitant messaging rates adds to the reduced effectiveness and decrease in potential users of the Short Messaging Service. In Zip It Up SMS (ZIUS), we have developed our own algorithm, and been successful in compressing more data into the same message. Now every SMS can carry up to an average-best case of 250 characters, which can bring about a change in standards and prove to be a massive boost to the mobile industry.
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