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36
Architecture for improving terrestrial logistics based on the Web of Things
- Sensors
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Automated Tracking of Pallets in Warehouses: Beacon Layout and Asymmetric Ultrasound Observation Models
"... Abstract — We consider the use of wireless sensor networks to automatically track “perceptive pallets ” of materials in warehouses for the purpose of monitoring volumetric and spatial constraints. A combination of radio frequency and ultrasound chirping produces position estimates that are noisy and ..."
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Abstract — We consider the use of wireless sensor networks to automatically track “perceptive pallets ” of materials in warehouses for the purpose of monitoring volumetric and spatial constraints. A combination of radio frequency and ultrasound chirping produces position estimates that are noisy and prone to error. To address this, we measure and characterize the ultrasound response from standard “Cricket ” wireless sensor motes and beacons. We develop a non-parametric particle filtering approach to estimate trajectories of moving motes and introduce two asymmetric observation models that incorporate measured cardioid-shaped response patterns of ultrasound. We use simulation to study the effects of mote placement: position error as a function of ceiling height and beacon density, and then perform physical experiments to evaluate the effectiveness of asymmetric vs. symmetric observation models for pallet tracking. Experiments suggest that asymmetric observation models can improve position estimates by as much as 11%. I.
WLAN based Pose Estimation for Mobile Robots
- in Proceedings of the 17th IFAC World Congress, Seoul, Korea
, 2008
"... Abstract: Nowadays, many buildings are equipped with a WLAN infrastructure, as an inexpensive communication technology. In this paper a method to estimate position and heading (pose) of a mobile robot using WLAN technology is described. The proposed technique for localizing a mobile robot is based o ..."
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Abstract: Nowadays, many buildings are equipped with a WLAN infrastructure, as an inexpensive communication technology. In this paper a method to estimate position and heading (pose) of a mobile robot using WLAN technology is described. The proposed technique for localizing a mobile robot is based on the use of received signal strength values of WLAN access points in range. A radio map based method and Euclidean distance in combination with Delaunay triangulation and interpolation is proposed. Measured signal strength values of an omnidirectional antenna and a beam antenna are compared with the values of a radio map, in order to estimate the pose of a mobile robot, whereby the directionality of the beam antenna is used to estimate the heading of the robot. The paper presents the experimental results of measurements in an office building. 1.
The Impact of Radio Frequency Identification (RFID) Investment Announcements on the Market Value of the Firm
, 2008
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Overcoming Visibility Issues in a Small-to-Medium Retailer Using Automatic Identification and Data Capture Technology: An Evolutionary Approach
, 2009
"... The aim of this paper is to review the inventory control practices of a small-to-medium retailer, in order to identify common challenges these organizations experience with respect to automated data capture (ADC) and the implementation of an enterprise wide information system. The study explores a s ..."
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The aim of this paper is to review the inventory control practices of a small-to-medium retailer, in order to identify common challenges these organizations experience with respect to automated data capture (ADC) and the implementation of an enterprise wide information system. The study explores a single case of a hardware store in a regional town of NSW, Australia. Four semistructured interviews were conducted with employees of a small-to-medium retailer focusing on issues related to inventory control including: delivery discrepancies, the checking and sorting of orders, locating stock and goods, loss prevention, customer purchasing and point of sale processing and replenishment. Flowcharts have been used to illustrate the current processes of the retailer with a view to understanding how ADC technologies like bar code and radiofrequency identification (RFID) may impact the retailer in a future mode of operation. The findings of the study promote an evolutionary approach towards the use of automated data capture technology by adopting barcode technology first, and then introducing the complementary RFID technology once basic benefits have been achieved. The study concludes that automatic identification and data capture (AIDC) technologies can only be effective if an enterprise is committed to some form of enterprise resource planning which then allows
Improving Mobile Solution Workflows and Usability Using Near Field Communication Technology
"... Abstract. Organisations want nowadays more controlled processes and easily usable solutions, but achieving them requires winning many challenges. Radio Frequency Identification (RFID) based technology has been proposed for improving mobile solution workflows and usability. NFC (Near Field Communicat ..."
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Abstract. Organisations want nowadays more controlled processes and easily usable solutions, but achieving them requires winning many challenges. Radio Frequency Identification (RFID) based technology has been proposed for improving mobile solution workflows and usability. NFC (Near Field Communication) technology is based on integrating RFID on mobile devices. This paper identifies how NFC based systems could be used to improve mobile solution workflows and usability. The results of this study are based on the implementation of six pilot cases in 2005-2007. This paper concludes that use of NFC provides both advantages and disadvantages and, therefore, to estimate the potential of NFC, its pros and cons have to be weighed up for each case in question. This paper also concludes that only a comprehensive solution achieves the full potential of NFC from users ’ point of view. Considering mobile solution usability, this paper concludes that NFC based solutions are easy to use, but the small and limited keyboard of mobile devices poses challenges to the design of these solutions. NFC use poses new organizational challenges like need for the rest of the system to catch up and feeling of distrust from the user side.
RFID Security Risks in Supply Chains: More Than Privacy
, 2007
"... projects and should initiate scientific discussion; criticism of the content is desired and welcome. All rights reserved. ..."
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projects and should initiate scientific discussion; criticism of the content is desired and welcome. All rights reserved.
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"... AbstractThe radio frequency identification (RFID) is a technology for automatic identification of items, particularly in supply chain, but it is becoming increasingly important for industrial applications. Unlike barcode technology that detects the optical signals reflected from barcode labels, RFID ..."
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AbstractThe radio frequency identification (RFID) is a technology for automatic identification of items, particularly in supply chain, but it is becoming increasingly important for industrial applications. Unlike barcode technology that detects the optical signals reflected from barcode labels, RFID uses radio waves to transmit the information from an RFID tag affixed to the physical object. In contrast to today most often use of this technology in warehouse inventory and supply chain, the focus of this paper is an overview of the structure of RFID systems used by RFID technology and it also presents a solution based on the application of RFID for brand authentication, traceability and tracking, by implementing a production management system and extending its use to traders.
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"... Delivery performance can be defined as the level up to which products and services supplied by an organization meet the customer expectation. It provides an ..."
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Delivery performance can be defined as the level up to which products and services supplied by an organization meet the customer expectation. It provides an
