Search results

Filters

  • Journals
  • Authors
  • Keywords
  • Date
  • Type

Search results

Number of results: 3
items per page: 25 50 75
Sort by:
Download PDF Download RIS Download Bibtex

Abstract

Direct sensor-to-microcontroller is a simple approach for direct interface of passive modulating sensors to a microcontroller without any active components in between the sensor and the microcontroller and without an analog to digital converter. The metrological performances of such interface circuits are limited by certain microcontroller parameters which are predetermined by the manufacturing technology. These limitations can be improved by specific hardware-related techniques and can improve the accuracy, speed and resolution of the measurements. Such hardware solutions as well as proper selection of the electrical components are addressed in this paper. It has been shown that employment of only a few MOSFET transistors can reduce the maximal relative error of single point calibration more than fifteen times and can increase the measuring speed around 30 % in all calibration techniques in the measurement range of PT1000 resistive temperature sensors. Moreover, the effective number of resolution bits increases by more than 1.3 bits when using an external comparator.

Go to article

Authors and Affiliations

Zivko Kokolanski
Cvetan Gavrovski
Vladimir Dimcev
Mario Makraduli
Download PDF Download RIS Download Bibtex

Abstract

Respiratory rate measurement is important under different types of health issues. The need for technological developments for measuring respiratory rate has become imperative for healthcare professionals. The paper presents an approach to respiratory monitoring, with the aim to improve the accuracy and efficacy of the data monitored. We use multiple types of sensors on various locations on the body to continuously transmit real-time data, which is processed to calculate the respiration rate. Variations in the respiration rate will help us identify the current health condition of the patient also for diagnosis and further medical treatment. The software tools such as Keil μVision IDE, Mbed Studio IDE, Energia IDE are used to compile and build the system architecture and display information. EasyEDA is used to provide pin map details and complete architecture information.
Go to article

Authors and Affiliations

Kanthi M
1
Ravilla Dilli
2

  1. Department of Electronics and Communication Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, India
  2. Department of Electronics and Communication Engineering at Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka, India
Download PDF Download RIS Download Bibtex

Abstract

The paper introduces the distributed framework for determining the shortest path of robots in the logistic applications, i.e. the warehouse with a swarm of robots cooperating in the Real- Time mode. The proposed solution uses the optimization routine to avoid the downtime and collisions between robots. The presented approach uses the reference model based on Dijkstra, Floyd- Warshall and Bellman-Ford algorithms, which search the path in the weighted undirected graph. Their application in the onboard robot’s computer requires the analysis of the time efficiency. Results of comparative simulations for the implemented algorithms are presented. For their evaluation the data sets reflecting actual processes were used. Outcomes of experiments have shown that the tested algorithms are applicable for the logistic purposes, however their ability to operate in the Real-Time requires the detailed analysis.
Go to article

Bibliography

[1] Mobile Robot Platforms, Shuttle Automated Storage and Retrieval Systems, Industrial Robotic Manipulators, and Gantry Robots: Global Market Analysis and Forecasts, Informa PLC, https://www.tractica.com/research/warehousing-and-logistics-robots/
[2] J. Miklinska, “Trends in the logistic market and warehouses for logistics service providers-experiences from Poland,” Economic and Social Development: Book of Proceedings, 2020, 193-202.
[3] M. Khamphroo, N. Kwankeo, K. Kaemarungsi, K. Fukawa, “MicroPython-based educational mobile robot for computer coding learning,” 2017 8th International Conference of Information and Communication Technology for Embedded Systems (IC-ICTES), Chonburi, 2017.
[4] K. Dokic, B. Radisic, M. Cobović, “MicroPython or Arduino C for ESP32 - Efficiency for Neural Network Edge Devices,” Springier, 2020, pp.33-34, https://doi.org/10.1007/978-3-030-43364-2_4.
[5] N. Deo, “Graph theory with applications to engineering and computer science,” Englewood Cliffs, NJ: Prentice-Hall, 1974.
[6] G. Laporte, ”The traveling salesman problem: An overview of exact and approximate algorithms,” EJOR, 1992, Vol.59, pp. 231-247.
[7] Lu Feng, “Shortest path algorithm: Taxonomy and Advance in Research”, Acta Geodaetica et Cartographica Sinica, vol. 30, no. 3, pp. 269-275, 2001.
[8] D. Dobrilovic, V. Jevtic, I. Beker, Z. Stojanov, “Shortest-path based Model for Warehouse Inner Transportation Optimization” in 7th IEEE International Symposium on Applied Computational Intelligence and Informatics (SACI)
[9] Y. Liu, T. M. Vitolo, “Graph Data Warehouse: Steps to Integrating Graph Databases Into the Traditional Conceptual Structure of a Data Warehouse,” 2013 IEEE International Congress on Big Data, 2013, pp. 433-434, https://doi.org/10.1109/BigData.Congress.2013.72
[10] H.Y. Jang, J.U. Sun, “A Graph Optimization Algorithm for Warehouses with Middle Cross Aisles,” Applied Mechanics and Materials, 2011, 145. 354-358, https://doi.org/10.4028/www.scientific.net/AMM.145.354.
[11] B.D. Acharya, M.K. Gill, “On the Index of Gracefulness of a Graph and the Gracefulness of Two-Dimensional Square Lattice Graphs, ” Indian J. Math., 1981, 23, 81-94.
[12] T.H. Cormen, C.E. Leiserson, and R.L. Rivest, “Introduction to algorithms,” MIT Press, 1994.
[13] Warehouse material flows and flow charts, https://www.mecalux.co.uk/warehouse-manual/warehouse-design/warehouse-material-flowchart
[14] A. Niemczyk et al., “Organizacja i monitorowanie procesów magazynowych,” Instytut Logistyki i Magazynowania, 2014.
[15] A. Szymonik, D. Chudzik, “Logistyka nowoczesnej gospodarki magazynowej,” Difin, 2018.
[16] B. Mbakop A. Kevine, “The Effectiveness of ABC Cross Analysis on Products Allocation in the Warehouse,” 2018, January – February, Vol. 5, Issue 1, pp: 11-30.
Go to article

Authors and Affiliations

Tomasz Markowski
1
Piotr Bilski
2
ORCID: ORCID

  1. Lukasiewicz – Institute of Logistics and Warehousing, Poland
  2. Warsaw University of Technology, Poland

This page uses 'cookies'. Learn more