Presentation 2017-01-27
Development of a Rainfall Observation System utilizing 420MHz LoRa to deal with Heavy Rainfall Disaster
Hong Quan Le, Tatsuhito Hoshi, Hiroshi Yamamoto, Katsuyuki Yamazaki,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) In mountainous country like Japan, sand-and-stone avalanches caused by torrential or prolonged rainfall often result in a heavy damage to people and residents in surrounding area. Data need to be collected from a large area in order to effectively forecast disasters. However, due to high mountains and deep forests, data transmission is very limited. In this study, we propose a rainfall monitoring system utilizing 420MHz LoRa. Rainfall, water level measured at mountain areas is transmitted through 420MHz LoRa to a server. The evaluation results clarified that 420MHz LoRa are capable of transmitting through 47.5km line-of-sight distance and 3.5km non-line-of-sight distance. We also implement a packet sequential retransmission method to increase system resistance to noise.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Rainfall measure / sand and stone avalances / 420MHz / Lora / rain index R'
Paper # IA2016-79
Date of Issue 2017-01-20 (IA)

Conference Information
Committee IA
Conference Date 2017/1/27(1days)
Place (in Japanese) (See Japanese page)
Place (in English) Kikai-Shinko-Kaikan Bldg. B3 Kenshu-2 room
Topics (in Japanese) (See Japanese page)
Topics (in English) Senser Network, IoT, M2M, etc.
Chair Ken-ichi Yoshida(Univ. of Tsukuba)
Vice Chair Hiroyuki Osaki(Kwansei Gakuin Univ.) / Masahiro Jibiki(NICT) / Tomoki Yoshihisa(Osaka Univ.)
Secretary Hiroyuki Osaki(Tokyo Inst. of Tech.) / Masahiro Jibiki(Ritsumeikan Univ.) / Tomoki Yoshihisa
Assistant Yusuke Sakumoto(Tokyo Metropolitan Univ.) / Yuichiro Hei(KDDI R&D Labs.) / Toshiki Watanabe(NEC)

Paper Information
Registration To Technical Committee on Internet Architecture
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Development of a Rainfall Observation System utilizing 420MHz LoRa to deal with Heavy Rainfall Disaster
Sub Title (in English)
Keyword(1) Rainfall measure
Keyword(2) sand and stone avalances
Keyword(3) 420MHz
Keyword(4) Lora
Keyword(5) rain index R'
1st Author's Name Hong Quan Le
1st Author's Affiliation Nagaoka University of Technology(Nagaoka Univ. of Technology)
2nd Author's Name Tatsuhito Hoshi
2nd Author's Affiliation Kanai Doryoukou Co., Ltd.(Kanai Doryoukou)
3rd Author's Name Hiroshi Yamamoto
3rd Author's Affiliation Ritsumeikan University(Ritsumeikan Univ)
4th Author's Name Katsuyuki Yamazaki
4th Author's Affiliation Nagaoka University of Technology(Nagaoka Univ. of Technology)
Date 2017-01-27
Paper # IA2016-79
Volume (vol) vol.116
Number (no) IA-434
Page pp.pp.1-6(IA),
#Pages 6
Date of Issue 2017-01-20 (IA)