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| Presentation | 2021-01-22 10:35 [Invited Lecture] 5GHz Band Radio Wave Propagation Analysis Considering Directivity of Multiple Antennas on Mining Bulldozer Katsutoshi Izawa, Masahiko Fujioka, Yasuhiro Kawamoto (Komatsu)  AP2020-111 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Unmanned operation of radio-controlled bulldozer in mines can be an effective solution for avoiding such life-threatening risks as overturn on a slope or fall from a cliff. For highly efficient dozing and leveling of ground, important is the range within which high-speed and reliable wireless communication can be maintained. Though actual measurement of power can provide such a range, in the mines whose terrain frequently changes along dozing and leveling of ground by bulldozers, frequent measurement of power may be required. In order to examine the possibility of substituting simulation for actual measurement of power, we analyzed 5GHz band radio wave propagation, considering directivity of multiple antennas on a mining bulldozer. As a result of comparison with actual measurement of power within approximately line-of-sight 400m distance, we found that the power estimated by the simulation is different no more than approximately 5[dB] from the result of actual measurement. We consider this indicates the possibility of shortening the period for maintenance of wireless communication environment. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Electromagnetic Field Simulation / Radio Wave Propagation Simulation / Ray Tracing / Bulldozer / Antenna / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 120, no. 325, AP2020-111, pp. 44-49, Jan. 2021. | |
| Paper # | AP2020-111 | |
| Date of Issue | 2021-01-14 (AP) | |
| ISSN | Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | AP2020-111 |
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| Conference Information | |
| Committee | WPT AP |
| Conference Date | 2021-01-21 - 2021-01-22 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | AP |
| Conference Code | 2021-01-WPT-AP |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | 5GHz Band Radio Wave Propagation Analysis Considering Directivity of Multiple Antennas on Mining Bulldozer |
| Sub Title (in English) | |
| Keyword(1) | Electromagnetic Field Simulation |
| Keyword(2) | Radio Wave Propagation Simulation |
| Keyword(3) | Ray Tracing |
| Keyword(4) | Bulldozer |
| Keyword(5) | Antenna |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Katsutoshi Izawa |
| 1st Author's Affiliation | Komatsu Ltd. (Komatsu) |
| 2nd Author's Name | Masahiko Fujioka |
| 2nd Author's Affiliation | Komatsu Ltd. (Komatsu) |
| 3rd Author's Name | Yasuhiro Kawamoto |
| 3rd Author's Affiliation | Komatsu Ltd. (Komatsu) |
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| Speaker | Author-1 |
| Date Time | 2021-01-22 10:35:00 |
| Presentation Time | 25 minutes |
| Registration for | AP |
| Paper # | AP2020-111 |
| Volume (vol) | vol.120 |
| Number (no) | no.325 |
| Page | pp.44-49 |
| #Pages | 6 |
| Date of Issue | 2021-01-14 (AP) |
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