A system for real-time monitoring of the dynamic loading rate on support systems
used in underground mines and other situations is provided. The load rate monitoring
apparatus uses a programmable microcontroller to monitor and calculate the loading
rates on the support system from pressure transducers or welded strain gauge instrumentation
installed on the support systems. The apparatus is programmed to sequentially activate
different color lights and/or audio alarms as the loading rate increases on the
support systems. The apparatus is intended for installation with numerous underground
support systems used in underground mining to alert miners of dangerous loading
conditions, which support systems include longwall shields, mobile roof support
(MRS) machines, hydraulic jacks, rock bolts, steel sets, and roof trusses. Intrinsically
safe hand-held computers and displays may be used for programming the microcontroller
subsystem and optimal load weight indicators include multicolor strobes, light-emitting
diodes (LEDs), fluorescent visual indicators and audio alarms.