A wheelchair alarm system and method for preventing falls for patients at risk by recognizing the gesture of a patient attempting to stand. The secondary battery includes a capacitive device, a relay and an AD converter. The wheel cover can have a circumferential wall portion to cover a rolling surface of the associated wheel and a sidewall portion to contact a side of the associate wheel. Additionally, the present invention minimizes deployments of costly optical transceivers while providing superior resiliency. The second phase includes using a set of allocation rules to identify business objects configured to manually determine allocation of the unallocated, under-allocated, or over-allocated transactions.