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Title:
WIRELESS DETONATION SYSTEM, RELAY DEVICE FOR WIRELESS DETONATION SYSTEM, AND WIRELESS DETONATION METHOD USING WIRELESS DETONATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/014530
Kind Code:
A1
Abstract:
A wireless detonation system (1) has a blasting operation device (40), a detonator (10), and a relay device (30). The blasting operation device (40) is positioned at a distance from a work face (71) and transmits a first downlink wireless signal of a first frequency. The detonator (10) is loaded into a gunpowder charging hole (72) in the work face (71) and comprises a receiving coil (12) that receives a second downlink wireless signal of a second frequency lower than the first frequency. The relay device (30) comprises: a first transmitting-receiving antenna (35) that receives the first downlink wireless signal; a relay processor (32) that performs reception processing on the first downlink wireless signal and performs transmission processing with the second downlink wireless signal of the second frequency; and a second transmitting-receiving antenna (37) that transmits the second downlink wireless signal. The second transmitting-receiving antenna (37) is loaded into an insertion hole (74) in the work face (71) by the side of the gunpowder charging hole (72).

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Inventors:
UCHIDA KOHKI (JP)
YANAGI NAOTO (JP)
OGURA TOSHIYUKI (JP)
SHIMAZAKI KOHICHI (JP)
WATANABE KAZUHITO (JP)
KOMODA TAKAFUMI (JP)
Application Number:
PCT/JP2021/026119
Publication Date:
January 20, 2022
Filing Date:
July 12, 2021
Export Citation:
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Assignee:
NOF CORP (JP)
FUTABA DENSHI KOGYO KK (JP)
International Classes:
F42B3/12; E21D1/00; F42D1/00; F42D1/045
Domestic Patent References:
WO2003029748A12003-04-10
Foreign References:
JP2017510785A2017-04-13
JP2001330400A2001-11-30
US20080041261A12008-02-21
JP5630390B22014-11-26
JP4309001B22009-08-05
JPH0312769B21991-02-21
JP2019066092A2019-04-25
Attorney, Agent or Firm:
OKADA PATENT & TRADEMARK OFFICE, P. C. (JP)
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