| 主权项 |
1. A warning system comprising:
a pad for location on or adjacent a device such that a user must stand on the pad in order to normally use the device; a switch formed in or on the pad, the switch being activated by weight pressure on the pad, the switch being movable between an open position when no weight pressure is detected on the pad and a closed position when the switch is activated by weight pressure detected on the pad; a control circuit associated with the pad and connected to the switch for determining when the switch is in the open position or the closed position, the control circuit being operational between a ready state before the switch is activated from the open position to the closed position and a monitoring state after the switch is activated to the closed position; a warning device connected to the control circuit, the warning device being activated by the control circuit when in the monitoring state when the control circuit determines that the switch has been in the open position for a preselected period of time after having been in the closed position; and a reset switch on the pad for resetting the control circuit from the monitoring state to the ready state. |
