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US 9,249,004 B2Granted
Load monitoring system
AssigneeNiftylift Limited
InventorFrank Roger Bowden
Life of this patent
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Abstract
A load monitoring system for a mobile work platform including a load cell having at least one strain gauge and a sensing circuit connected to receive a strain signal from the strain gauge. The sensing circuit includes a first sensing device for sensing the strain in the strain gauge, and a second sensing device for sensing a negative shift in the strain signal.
Claims11
A method for monitoring a load for a mobile work platform, comprising;
- producing a strain signal from at least one strain gauge included in a load cell;
- receiving said strain signal from the at least one strain gauge by a sensing circuit included in said load cell;
- sensing the load on the load cell;
- sensing a negative shift in an unloaded strain signal produced when said load cell is not loaded, wherein said negative shift is caused by damage to the load cell;
- and
- activating a safety device when the negative shift is sensed.
3 more elements
Dependencies are inferred from the claim text.