Research on Storage Location Technology Based on RFID
Along with the development of the logistics technology and the expansion of the warehouse scale, the difficulty of warehouse management has also greatly been increased. It puts forward the new requirements to the method and precision of storage location.
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Abstract Along with the development of the logistics technology and the expansion of the warehouse scale, the difficulty of warehouse management has also greatly been increased. It puts forward the new requirements to the method and precision of storage location. This paper intends to study the positioning method and technology based on RFID. The RFID positioning technology is introduced into the information management of the warehouse, in order to realize the real-time positioning of goods, and improve the accuracy and efficiency of the warehouse operation management. At the same time, using the received signal strength method (RSSI), constructed the storage location algorithm and the model, which can provide important support for the realization of intelligent storage management, inventory positioning and identification. Keywords RFID
Warehouse management RSSI Positioning
1 Introduction With the rapid development of Internet and information technology, radio frequency identification technology (RFID) as a new automatic identification technology, has been used to the warehouse management. The RFID positioning technology makes it possible for real-time accurate locating of the warehouse storage, and is a new perspective for building a modernized, visualized and dynamic warehouse management system. Among the RFID indoor positioning algorithms, the method based on RSSI is low cost and relatively easy to implement positioning technology. Therefore, this paper adopts the positioning algorithm based on RSSI to carry out three-dimensional analysis of cargo inventory positioning in warehouse logistics,
H. Zhang X. Feng (&) J. Wen Tianjin University of Science and Technology, Tianjin, China e-mail: [email protected] © Springer Nature Singapore Pte Ltd. 2017 P. Zhao et al. (eds.), Advanced Graphic Communications and Media Technologies, Lecture Notes in Electrical Engineering 417, DOI 10.1007/978-981-10-3530-2_84
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and select the three side measurement method to calculate the unknown node coordinates [1].
2 Positioning Analysis of Three-Dimensional Warehouse Inventory Based on RSSI Positioning Algorithm 2.1
Principle of Distance Measurement
The principle of RSSI ranging technology is by measuring the intensity of the received radio signal, and then estimates the distance between the nodes and the unknown node based on propagation path loss of a radio signal. The present paper uses the long distance path loss model to calculate the distance between the unknown node and the known. The formula is as follows: d Pr ðdÞ ¼ P0 ðd0 Þ 10n lg þ Xr d0
ð1Þ
Among them, d0 takes 1 m, Xr is 0, and the model is simplified, and the distance between unknown node and known node is obtained: d ¼ 10ðA1 RSSIÞ=10n
ð2Þ
where A1 represents the reference distance d0 is 1 m, the node receives the radio signal strength. RSSI is the mean of the wireless signal strength received by the node, n is for a radio signal propagation path loss coefficient [2, 3].
2.2
RSSI Ranging Based on Known Node Information
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