Patent ID: 7398860

Claim:
A remote supervisory control system for an elevating machine, which performs supervisory control of at least one elevating machine in a remote supervisory center via a general public line, the general public line having plural kinds of networks, including a high-speed digital network, for transmitting with large-capacity, information from each of the elevating machines to the remote supervisory center and a low-communication-cost public network for transmitting a control command for perform controlling each of the elevating machines from the remote supervisory center, the remote supervisory control system comprising: network selection means for, in each of the elevating machines and the remote supervisory center, selecting one network from a plurality of networks, according to information to be transmitted, and causing the network selected to transmit the information, and for selecting the high-speed digital network when the information to be transmitted is large in quantity and the low-communication-cost public network when the information to be transmitted is a control command and causing the network selected to transmit the information; storage means for storing a specific code that is preset and is specific to one of the elevating machines in each of the elevating machines; database means for storing the specific code of each of the elevating machines in the remote supervisory center; and security means for, in each of the elevating machines and the remote supervisory center, encoding and decoding transmitted information for each of the plurality of networks, adding the respective specific code to the control command to each of the elevating machines in the remote supervisory center, and collating for authentication the specific code added to the control command from the remote supervisory center with the specific code stored at the elevating machine, in each of the elevating machines.