Edge gateway clock skew corrupting mine sensor correlation
Time-series correlation between vibration, temperature, and pressure tags is only as good as the timestamps attached to each sample. When those.
News
Functional Safety Notes
Conveyor Belt Misalignment and Pulley Bearing Wear Detection
Conveyor belt misalignment is usually treated as a housekeeping problem: the belt tracks off-centre, the edge frays, a trainer idler gets replaced,.
Case Studies
Late Detection of Haul-Truck Gearbox Oil Starvation
A haul truck’s gearbox does not fail the moment oil stops reaching a bearing. It fails over hours, sometimes days, as the oil film thins, asperity.
Case Studies
Pump-Sump Level Drift Masked by Slow Sensor Response
A dewatering sump on a mine site is a simple vessel with an unglamorous job: collect inflow from floor wash, gland seal leakage, and seepage, then.
Case Studies
SAG-mill feed chute blockage: the power ramp before the alarm
A SAG mill does not usually announce a blocked feed chute with a bang. It announces it with a slow, monotonic rise in power draw that looks, for the.
News
ESP32 uplink watchdog reset: recovering the lost sample window
A condition-monitoring node on a SAG mill pinion gearbox samples vibration and temperature at 1 Hz, buffers locally, and publishes to an MQTT broker.
News
LoRaWAN Uplink Power Budget Failure at the Cell Edge
A LoRaWAN end device at the edge of a cell does not usually stop transmitting when its uplink power budget closes. It keeps transmitting, and a.
Functional Safety Notes
Control-Valve Sticking Undetected by Flow-Loop Offset
A control valve that sticks does not usually fail to zero or fail to full travel. It fails in small increments. The stem hesitates at a position,.
Case Studies
Comms Lag on Autonomous Haul Trucks Hides Stationary Faults
A haul truck that stops moving is not automatically a fault. A truck that stops moving and stops reporting is a fault that dispatch cannot see. On an.
Another failed IoT pilot and another dashboard of blinking red lights
Another failed IoT pilot and another dashboard of blinking red lights that nobody has time to look at while the plant floor is burning. Operations.