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US 4,059,991 AGranted
Modular constructed load sensing system
OwnerWilliam P. Dybel, Frank R. Dybelinventors
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OwnerWilliam P. Dybel, Frank R. Dybelinventors
Estimating the term…
A load monitoring system for indicating and controlling loads intermittently applied to force carrying members, such as pitmans, columns, tie rods, and toggle mechanisms of production presses. The system includes a monitor that has a main circuit board and a plurality of removable and replaceable electronic modules, each module having a base with rows of closely spaced depending pins that are insertable into connectors in the main circuit board to positively secure the module in place and electrically couple its components to the circuit board. The illustrated monitor includes a signal conditioning module which may be calibrated for the press on which the monitor is to be used, after which time it may be used in replacement or modified monitors without the necessity for their recalibration. The system further includes means for manually resetting the overload control contact means following an overload and for automatically overriding this reset after a short period so as to again render operative the load control means even though the reset means is inadvertently or intentionally maintained in its reset position. An overload counter also is provided for counting the overloads and is driven from a DC power supply with a minimum of power consumption.
A system for monitoring loads that are intermittently applied to a force carrying member comprising mounting means fixed to said member substantially in line with the load to be detected, a transducer interposed between said mounting means and having a pair of output terminals with a piezoelectric crystal therebetween for developing at said output terminals electrical signals substantially proportional to the stresses experienced by to said member, electrically operated means responsive to said transducer signals for monitoring the loading on said member, said monitoring means including a main circuit board and a plurality of individual modules each containing at least one electrical component, means for engaging each said module with said board as an incident to positioning of said module at a predetermined location on said board, said engaging means including a plurality of mounting and conductor pins extending from the underside of each said module for electrically coupling said modules and the components thereon to said circuit board when said modules are in mounted position, and said modules each being individually removable from said circuit board.
A system for monitoring loads that are intermittently applied to a force carrying member comprising mounting means fixed to said member substantially in line with the load to be detected, a transducer interposed between said mounting means and having a pair of output terminals with a piezoelectric crystal therebetween for developing at said output terminals electrical signals substantially proportional to the stress experienced by said member, electrically operated means responsive to said transducer signals for monitoring the loading on said member, said monitoring means including a main circuit board and a plurality of individual modules each containing at least one electrical component, means for engaging each said module with said board as an incident to positioning of said module at a predetermined location on said board, said engaging means including conductive means for electrically coupling said modules and the components thereon to said circuit board when said modules are in mounted position, said modules including a signal conditioning module formed with a capacitance means electrically coupled in parallel with said transducer terminals when said signal conditioning module is mounted on said circuit board, said signal conditioning module capacitance means being effective to limit the transducer output signal to a predetermined voltage for a given loading on said force carrying member, and said modules each being individually removable from said circuit board.
A system for monitoring loads that are intermittently applied to a force carrying member comprising mounting means fixed to said member substantially in line with the load to be detected, a transducer interposed between said mounting means and having a pair of output terminals with a piezoelectric crystal therebetween for providing at said output terminals electrical signals substantially proportional to the stresses experienced by said member, electrically operated means responsive to said transducer signals for monitoring the loading on said member, said monitoring means including a main circuit board and a plurality of individual modules each containing at least one electrical component, said modules including an amplifying module and a reversal load module, means for engaging each said module with said board as an incident to positioning of said module at a predetermined location on said board, said engaging means including conductive means for electrically coupling said modules and the components thereon to said circuit board when said modules are in mounted position, said amplifying module having a pair of input terminals, and including amplifying means driven by said transducer signals to produce an output signal proportional to the transducer signal, said reversal load module being adapted to couple said amplifying module input terminals to said transducer terminals, said reversal load module including switch means for reversing the connection between said transducer terminals and said amplifying module input terminals for enabling said monitoring means to selectively monitor increases or decreases in loads on said member, and said modules each being individually removable from said circuit board.
A system for monitoring loads that are intermittently applied to a force carrying member comprising a transducer mounted on said member for developing electrical output signals substantially proportional to the loads exerted on said member, electrically operated means responsive to said transducer signals for monitoring the loadings on said member, said monitoring means including a main circuit board and a plurality of individual modules, said modules each having a base with at least one electrical element mounted thereon, said base having circuit means thereon to which said elements are electrically connected, said base of each module having a plurality of mounting and conductor pins extending from the underside thereof for engagement with said main circuit board at a predetermined location and for electrically coupling the modules and the components thereon to said circuit board, and said modules each being individually removable from said circuit board.
A system for monitoring loads that are intermittently applied to a deformable member comprising a transducer fixed to said member and adapted to produce an electrical output signal having a voltage substantially proportional to the load applied, overload indication means activated in response to an output signal from said transducer for indicating when the loading on said member exceeds a preset value, a DC power supply, counting means having a numerical display, means responsive to actuation of said overload indication means for electrically coupling said DC power supply to said counting means for energizing said counting means and advancing said numerical display to count said overload indication, and means for automatically limiting DC current flow to said counting means to a relatively short period following said overload.
A system for monitoring the intermittent loads that are incurred on the load carrying member of an operating press comprising
Dependencies are inferred from the claim text.