Title:
昇降機の遠隔監視制御システム
Document Type and Number:
Japanese Patent JP4607109
Kind Code:
B2
Abstract:
Supervisory control of an elevating machine 1 is performed in a remote supervisory center 2 via a general public line 3. The general public line 3 has a plural kinds of networks including a high-speed digital network 32 for transmitting large-capacity information from the elevating machine to the center and a low-communication-cost public network 31 for transmitting a control command from the center to the elevating machine. Network selection means 14 selects the high-speed digital network in the case of the large-capacity information and the low-communication-cost public network in the case of the control command, and causes the selected network to perform transmission. Security means 15 encodes or decodes transmitted information individually for each of the networks, and performs collation and authentication of a specific code, which has been added to the control command on the center side, on the elevating machine side.
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Inventors:
Amano Masaaki
Application Number:
JP2006519172A
Publication Date:
January 05, 2011
Filing Date:
May 21, 2004
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
B66B3/00; B66B5/00; H04M11/00
Domestic Patent References:
| JPH10257098A | 1998-09-25 | |||
| JP2004126754A | 2004-04-22 | |||
| JPH08282931A | 1996-10-29 | |||
| JPH08202739A | 1996-08-09 |
Attorney, Agent or Firm:
Michiharu Soga
Hidetoshi Furukawa
Suzuki Kenchi
Kajinami order
Hidetoshi Furukawa
Suzuki Kenchi
Kajinami order