11 research outputs found
EmbTrack: A Wearable IEEE 802.15.4 Tracking System for Logistics
No full textWe present an innovative wireless embedded system for logistic applications: it is a prototype of a portable appliance to manage operations in production activity. The system is based on a wearable device which is able to read products codes and allows the system to guide users through the different phases of warehouse's everyday life; by means of wireless IEEE 802.15.4 standard – on the ISM 2.4 GHz band – the system can transfer data, service and control messages and commands to and from its coupled management server.Moreover by an ad-hoc procedure based on a Weighted Minimum Mean Square Error (W-MMSE) localization algorithm, the system is able to localize users within a typical logistic scenario. The system is addressed to retail markets, pharmacies, porterage and logistic activities thus allowing the user to work more efficiently and employing mobile a more ergonomic terminal: from intensive picking to packing, from load of goods from lines to lists and warehouse checks
A Wireless Wearable Embedded System for Logistics Based On IEEE 802.15.4.
No full textIn this paper we present the new prototype of a portable appliance to be used for logistic operations in production warehouses. It is based on a novel and innovative wireless embedded system able to read products codes; it can also guide users through the different phases of warehouse's everyday life; the system can wirelessly transfer data, service and control/command messages to and from its coupled system server. Retail markets, pharmacies, transport and logistic activities are preferred application environments. From intensive picking to packing, from load of goods from lines to lists and warehouse checks, this system enables the user to work more efficiently and ergonomically
A wearable IEEE 802.15.4 system for logistics scenarios
No full textWe present a novel and innovative wireless embedded system for logistic applications: it is a prototype of a portable appliance to manage operations in production activity. The system is based on a wearable device which is able to read products codes and allows the system to guide users through the different phases of warehouse's everyday life; by means of IEEE 802.15.4 standard – on the ISM 2.4 GHz band – the system can wirelessly transfer data, service and control messages and commands to and from its coupled management server. The system is addressed to retail markets, pharmacies, porterage and logistic activities and it allows the user to work more efficiently and with a mobile terminal that is more ergonomic: from intensive picking to packing, from load of goods from lines to lists and warehouse checks
Evaluation of oil flows for the lubrication of an agricultural tractor transmission
No full textAn important part of power losses in tractor transmissions is due to the oil they contain. To limit power losses, a reduction in oil level in the tractor drive train is necessary, while still ensuring lubrication of the individual components. In this article, oil flows sufficient for the lubrication of gears and bearings in a full power-shift transmission front box were calculated. After evaluation of individual element power loss in the worst working condition, a thermal balance and the oil flow required to eliminate the produced heat were calculated. Gear lubrication requires about 10 L min-1, while rolling bearings need about 2 L min-1. Two gear jet flow lubrication systems were then evaluated and the most important parameters established for correct nozzle positioning
Performance of an agricultural tractor fitted with rubber tracks
No full textAgricultural tractors can have different types of undercarriage such as two wheel drive, four-wheel drive, and steel tracks. Despite a higher tractive performance and lower soil compaction, steel-tracked tractors are not popular due to their complexity and the difficulties of moving steel-tracked vehicles on roads. Recently, rubber belt tracks have become a notable solution for agricultural tractors, because they unite tractive performance and lower soil compaction with a better trafficability. Triangular rubber belt systems have been developed to replace the conventional wheeled configuration found on combine harvesters, and these can also be used on tractors. The purpose of this paper is to evaluate the performance of these solutions on a standard agricultural tractor. In particular, a tractor equipped with standard tyres, water-ballasted tyres, half-tracks, and fully-tracked was analysed. Drawbar power tests on asphalt and on soil were carried out, and compaction tests were performed on soil. The results show a better tractive efficiency and a reduced soil compaction for the solution with four rubber tracks with respect to the others. In addition, a reduction of the tractive efficiency with the increasing of the slip was highlighted in the half-track solution caused by an unfavourable weight distribution on the axles
Bluetooth embedded systems for home automation
No full textThis paper presents a wireless home control system based on Bluetooth technology. A wireless home network, that allows to control and monitor home devices, is realized and it can be accessed also by internet. An embedded system, which enables the normal devices to be interconnected without wire, is developed, showing either hardware and software design aspects
Bluetooth embedded systems for home automation
No full textThis paper presents a wireless home control system based on Bluetooth technology. A wireless home network, that allows to control and monitor home devices, is realized and it can be accessed also by internet. An embedded system, which enables the normal devices to be interconnected without wire, is developed, showing either hardware and software design aspects
