Title:
REMOTE MEASUREMENT COMMUNICATION EQUIPMENT
Document Type and Number:
Japanese Patent JP3107994
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To allow each slave station to measure an event detection time relatively and accurately.
SOLUTION: When each slave station (b) detects a lightening surge, a slave station side PN code generated in an LFSR 36 in this detection timing is latched by a latch circuit 50 and sent to a master station (a). A timewise correlation between the slave station side P code generated in the LFSR 36 and an input clock number to the LFSR 36 (linear feedback shift register) is stored in a ROM 51 in the master station (a). The master station (a) obtains an elapsed time from a reference timing till the detection timing of the lightening surge based on the correlation and further obtains the lightening surge detection time from the elapsed time.
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Inventors:
Minoru Aizawa
Takeki Watanabe
Satoshi Ogawa
Yoshiaki Sugano
Naoto Fujisaka
Kunio Satodate
Keisuke Morikubo
Toshio Obizu
Isao Utsugi
Takeki Watanabe
Satoshi Ogawa
Yoshiaki Sugano
Naoto Fujisaka
Kunio Satodate
Keisuke Morikubo
Toshio Obizu
Isao Utsugi
Application Number:
JP20273495A
Publication Date:
November 13, 2000
Filing Date:
July 18, 1995
Export Citation:
Assignee:
THE TOKYO ELECTRIC POWER COMPANY,INCORPORATED
Osaki Electric Industry Co., Ltd.
Osaki Electric Industry Co., Ltd.
International Classes:
G08C15/00; G01R29/00; G01R31/08; G01V1/22; G01W1/16; H02H3/00; H02H7/26; H02J13/00; H04L7/00; H04L12/40; (IPC1-7): H04L12/40; G01R31/08; G01V1/22; G01W1/16; G08C15/00; H02H3/00; H02H7/26; H02J13/00
Domestic Patent References:
| JP5347218A | ||||
| JP1242974A | ||||
| JP4145379A | ||||
| JP658979A |
Attorney, Agent or Firm:
Takeshi Minegishi