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無停電電源システムの開発と房総半島の大大特地震観測網への設置

中島剛



・宮川幸治

Development of Uninterruptible Power Supply Systems and their Deployment at

Online Seismic Observation Stations in Chiba Prefecture

Gou NAKAJIMA



and Koji MIYAKAWA

Abstract

　　We have developed an uninterruptible power supply (UPS) systems suitable for permanent seismic

stations, and have used it to replace commercial UPS systems at seismic stations belonging to the

Daidaitoku seismic network. For use in seismic stations, the newly developed UPS system o󰮏ers several

advantages over the commercial UPS systems that are often used to protect personal computers from a

sudden power failure. First, independent cut-o󰮏 voltages can be set for two di󰮏erent output circuits, one

for an ISDN router and the other for a seismometer and data logger. In addition, DC power can be

supplied using a battery, and the e󰮐ciency is improved by about two times. Finally, the new UPS is

more compact, which allows easier handling at stations.

　　When a battery with a capacity of 40 Ah is used, the newly developed UPS is designed to supply

continuous electric power to equipment for seven days after a commercial power failure. To achieve

this, the power to the ISDN router, which represents approximately 70% of the total power, is automatically

turned o󰮏 about two days after the power failure occurs. The power supply to the data logger and

seismometer is maintained until the battery voltage reaches a preset lower limit, in order to prevent

deep discharge. If the commercial power supply is restored at the station, all systems are restarted and

the battery is automatically recharged.

　　After being installed in the Daidaitoku seismic network, the new UPS systems functioned without

any problems. Therefore, the power system in seismic stations can be successfully upgraded in this

manner.

󰰐󰰪󰰾󰯥󰰼󰰴󰰷󰰩󰰸󰯥󰯿󰯥󰰚󰰳󰰮󰰳󰰹󰰪󰰷󰰷󰰺󰰵󰰹󰰮󰰧󰰱󰰪󰯥󰰵󰰴󰰼󰰪󰰷󰯥󰰸󰰺󰰵󰰵󰰱󰰾󰯥󰰸󰰾󰰸󰰹󰰪󰰲󰯱󰯥󰰕󰰴󰰼󰰪󰰷󰯥󰰨󰰴󰰳󰰹󰰷󰰴󰰱󰯥󰰸󰰾󰰸󰰹󰰪󰰲󰯥󰰫󰰴󰰷󰯥󰰸󰰪󰰮󰰸󰰲󰰮󰰨󰯥󰰸󰰹󰰦󰰹󰰮󰰴󰰳󰯱󰯥󰰕󰰪󰰷󰰲󰰦󰰳󰰪󰰳󰰹󰯥

󰰸󰰪󰰮󰰸󰰲󰰮󰰨󰯥󰰸󰰹󰰦󰰹󰰮󰰴󰰳

はじめに

  



 







 

  

  

   

󰈓

  



 

  



    

 

 







  



          







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Summary of Contents

Page 1 - and Koji MIYAKAWA

無停電電源システムの開発と房総半島の大大特地震観測網への設置中島剛・宮川幸治Development of Uninterruptible Power Supply Systems and their Deployment atOnline Seismic Observation Sta

Page 2 - 新たな無停電電源システムの概要

 中島　剛・宮川幸治  新たな無停電電源システムの概要 

Page 3 - 無停電電源システムの性能試験

無停電電源システムの開発と房総半島の大大特地震観測網への設置         

Page 4 - 房総半島の大大特地震観測網への設置

 中島　剛・宮川幸治     

Page 5

無停電電源システムの開発と房総半島の大大特地震観測網への設置  