Patent ID: 11945688
Assignee: MITSUBISHI ELECTRIC BUILDING SOLUTIONS CORPORATION
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. An elevator control device being connected with a remote monitoring server that remotely monitors an elevator, via a communication network, the elevator control device comprising:
a processor that performs a monitoring control process for monitoring the elevator; and
a memory that stores a communication function in which a control program for communicating with the remote monitoring server for the elevator is stored, a remote monitoring function in which a control program for the monitoring control process is stored, and a maintenance terminal function in which a control program for connection with a maintenance terminal is stored, wherein
the remote monitoring function is encrypted and is stored in the memory, and
the processor is configured to:
receive a decryption key of the remote monitoring function from the remote monitoring server by using the communication function;
decrypt the remote monitoring function by using the decryption key; and
execute the monitoring control process,
wherein when the decryption key is received from the remote monitoring server by using the communication function, the processor is configured to perform the additional functions of:
receive an encryption key for again encrypting the decrypted remote monitoring function; and
store the received encryption key in the memory, and
in response to where an encrypting condition that is in advance defined is satisfied, the processor is further configured to:
encrypt the remote monitoring function by using the encryption key; and
delete the encryption key,
wherein the encrypting condition is a condition that is satisfied where a continuous tune that elapses without a response from the remote monitoring server being received reaches a designated time that is in advance designated.