Cloud Robot Fleet Coordination Using Leader Heartbeats
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Solution Overview
Problem
Existing robotic systems face inefficiencies in task distribution and management as they lack a centralized coordination mechanism, leading to redundant efforts and communication failures when multiple robots attempt to assign tasks without a leader, especially in large fleets.
Innovation Solution
A system where a fleet of robotic devices communicates with a server that maintains a list of active devices and tasks, allowing a leader robotic device to assign tasks based on device capabilities and heartbeats, ensuring efficient task distribution and fault tolerance by replacing the leader if it becomes inactive.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a centralized coordination mechanism is introduced to manage task distribution among robotic devices, then task management efficiency and system coordination improve, but device complexity and communication infrastructure requirements increase
Solution Approach 1:
A cloud server acts as an intermediary between robotic devices, maintaining centralized lists of active devices and tasks. The server coordinates task assignment by receiving heartbeat signals from robots, determining which robots are active, and distributing tasks accordingly, thereby improving coordination without requiring direct peer-to-peer communication infrastructure between robots
2Ease of operation
If multiple robotic devices attempt to assign tasks without a designated leader, then device autonomy is maintained, but communication failures and redundant efforts occur
Solution Approach 1:
The cloud server provides multiple functions: maintaining the list of active robotic devices, receiving heartbeat signals, determining device activity status, and assigning tasks. This multi-functional centralized system ensures reliable coordination while allowing individual robots to maintain operational autonomy within the coordinated framework
3Productivity
If a leader robotic device is designated to distribute tasks, then task assignment efficiency improves, but system vulnerability to leader failure increases
Solution Approach 1:
Robotic devices send periodic heartbeat signals to the cloud server, providing feedback on their active status. The server uses this feedback to determine which devices are available for task assignment and can identify when a leader device has failed, enabling dynamic task redistribution to maintain system reliability
Data Source
AI summary
A method includes receiving, by a robotic device, an indication that the robotic device was elected to be a leader robotic device by a plurality of robotic devices and receiving an indication of a new task in a remotely stored list of tasks. The method further includes determining, based on a remotely stored list of robotic devices, an additional robotic device to assign the new task. The remotely stored list of robotic devices comprises an entry for each respective robotic device of the plurality of robotic devices associating the respective robotic device with an identifier and a heartbeat. The method additionally includes assigning the new task to the additional robotic device based on the additional robotic device having an active heartbeat. Assigning the new task to the additional robotic device comprises associating the new task with the additional robotic device in the remotely stored list of tasks to cause the additional robotic device to carry out the new task.