Remote operation device and remote operation method

1. A remote operation device that remotely operates a mobile object by communication, the remote operation device comprising:

processing circuitry configured to

generate the operation information for remotely operating the mobile object;

acquire information on non-prime remote operation devices that are allowed to remotely operate the mobile object by the communication;

detect a communication delay time in the communication with the mobile object;

determine whether or not the detected communication delay time exceeds a delay time determination threshold;

determine, when it is determined that the communication delay time exceeds the delay time determination threshold, a switching destination remote operation device from among the non-prime remote operation devices depending on whether or not a switching determination condition is satisfied on a basis of the acquired information on the non-prime remote operation devices-; and

output switching instruction information for remotely operating the mobile object to the determined switching destination remote operation device-,

wherein, while the remote operation device is remotely controlling the mobile object as a switching source remote operation device, the switching source remote operation device causes the switching destination remote operation device to generate and send preparation operation information of the switching destination remote operation device to the switching source remote operation device, and instructs the switching destination remote operation device to take over remote operation of the mobile object only after a difference between the operation information and the preparation operation information continuously remains below a predetermined difference threshold for a predetermined time duration, to enable a transition of the switching source remote operation device without stopping the mobile object.

2. The remote operation device according to claim 1 , wherein

the processing circuitry is further configured to acquire device state information on a communication delay times between each of the non-prime remote operation devices and the mobile object, and

the switching determination condition is that the acquired communication delay time between each of the non-prime remote operation devices and the mobile object is equal to or less than a non-prime device delay time determination threshold.

3. The remote operation device according to claim 2 , wherein

the processing circuitry is further configured to acquire operator state information on states of remote operators who operate the non-prime remote operation devices, and

the switching determination condition is that the acquired states of the remote operators operating the non-prime remote operation devices indicate that the non-prime remote operation devices are successfully operated, and the acquired communication delay time between each of the non-prime remote operation devices and the mobile object is equal to or less than the non-prime device delay time determination threshold.

4. The remote operation device according to claim 1 ,

acquire, from the switching destination remote operation device, the preparation operation information for remotely operating the mobile object, the preparation operation information being generated by the switching destination remote operation device; and

calculate the difference between the generated operation information and the acquired preparation operation information,

wherein when a state in which the calculated difference is within the predetermined difference threshold has continued for the predetermined time duration, the processing circuitry outputs the switching instruction information to the switching destination remote operation device, and does not-generate the operation information.

5. A remote operation method by a remote operation device that remotely operates a mobile object by communication, the remote operation method comprising:

acquiring information on non-prime remote operation devices that are allowed to remotely operate the mobile object by the communication;

detecting a communication delay time in the communication with the mobile object;

determining whether or not the detected communication delay time exceeds a delay time determination threshold;

determining when it is determined that the communication delay time exceeds the delay time determination threshold, a switching destination remote operation device from among the non-prime remote operation devices depending on whether or not a switching determination condition is satisfied on a basis of the acquired information on the non-prime remote operation devices; and

outputting switching instruction information for remotely operating the mobile object to the determined switching destination remote operation device,

wherein, while the remote operation device is remotely controlling the mobile object as a switching source remote operation device, the switching source remote operation device causes the switching destination remote operation device to generate and send preparation operation information of the switching destination remote operation device to the switching source remote operation device, and instructs the switching destination remote operation device to take over remote operation of the mobile object only after a difference between the operation information and the preparation operation information continuously remains below a predetermined difference threshold for a predetermined time duration, to enable a transition of the switching source remote operation device without stopping the mobile object.