Journal
MEASUREMENT
Volume 46, Issue 9, Pages 3482-3487Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.measurement.2013.06.043
Keywords
Wireless data acquisition system; Synchronous acquisition; Data compression
Funding
- Key Project of National Nature Science Foundation of China [60934003]
- National Nature Science Foundation of China [61104033, 61174127]
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In this paper, an industrial wireless data acquisition system (WDAS) is presented. This system aims to change the inflexibility of wired system and improve the wireless transmission rate. First, the WDAS system consists of one wireless gateway and some wireless data acquisition terminals (WDAT), and IEEE 802.11n protocol is used to construct a multipoint distribution network. Then, in order to simplify the synchronous method and the data packet structure, we design a synchronous solution which adopts the console aided control method. The adaptive frequency and amplitude (AFA) compression algorithm is employed to reduce the data redundancy. Consequently, system can transmit more data by limited bandwidth. Last, some experiments of the compression algorithm are given to show the effectiveness of the AFA algorithm. By using the proposed system, distributed signals are synchronously measured and, hence, real-time analysis can be realized. (c) 2013 Elsevier Ltd. All rights reserved.
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