MEASUREMENT DATA COLLECTION SYSTEM

Title:

MEASUREMENT DATA COLLECTION SYSTEM

Document Type and Number:

Japanese Patent JP3447694

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To provide a measurement data collection system that can transmit measured data even when a fault takes place in a repeater.
SOLUTION: Repeaters 4-8 and measurement devices 9-12 are set to transmit data to higher hierarchical levels at all times. Notice information incorporates the hierarchical levels (I-III) and the repeaters 4-8 transmit the information at any time for a prescribed period. The repeaters 4-8 and the measurement devices 9-12 store the newest repeater hierarchical level and the reception sensitivity to their internal memories. When the measurement device 10 transmits the measured data, the measurement device 10 transmits the data to the repeater 5 or 4 belonging to a hierarchical level higher than the hierarchical level II to which the measurement device 10 belongs. Furthermore, the repeater 5 or 4 transmits the measurement data to a collection center 1 via a public base station 3 and a PHS public network 2 through the shortest route.

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Inventors:

Hidetaka Kurokawa
Noriaki Endo

Application Number:

JP2000384714A

Publication Date:

September 16, 2003

Filing Date:

December 19, 2000

Export Citation:

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Assignee:

NEC
NC-Custom Technica Co., Ltd.

International Classes:

G01F3/22; G08C15/00; G08C17/00; G08C19/00; G08C25/00; H04M11/00; H04Q9/00; H04W4/04; H04W40/12; (IPC1-7): H04Q9/00; G01F3/22; H04M11/00; H04Q7/38

Domestic Patent References:

JP9326741A
JP11355300A
JP1117821A
JP2000207672A
JP2000115171A
JP2000315974A
JP200048292A
JP2000286960A
JP2002534842A

Attorney, Agent or Firm:

Kaneyuki Matsuura

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