⛏️ Mining, Metals & Chemicals · State Machine
Haul Truck Cycle
The states of a mining haul truck in each load-and-dump cycle, used by dispatch systems to measure productivity and waiting time.
Drawing diagram…
What this diagram shows
- Waiting time at the shovel is the biggest loss
- Each cycle is timed from state changes
- Breakdowns take the truck out of dispatch
Prompt used
State machine for a haul truck: TravelEmpty to the shovel, QueuedAtShovel, Spotting, Loading, TravelLoaded to the dump or crusher, QueuedAtDump, Dumping, then back to TravelEmpty. Any state can go to Breakdown, then Maintenance, then back to Available. Shift change goes to Parked.
Mermaid code
stateDiagram-v2 [*] --> Available Available --> TravelEmpty: Assigned to shovel TravelEmpty --> QueuedAtShovel QueuedAtShovel --> Spotting Spotting --> Loading Loading --> TravelLoaded: Payload recorded TravelLoaded --> QueuedAtDump QueuedAtDump --> Dumping Dumping --> TravelEmpty: Next assignment Dumping --> Parked: Shift change TravelLoaded --> Breakdown: Fault TravelEmpty --> Breakdown: Fault Breakdown --> Maintenance Maintenance --> Available Parked --> Available: New shift
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