Abstract:
A force measurement apparatus includes a housing having a track with a curved guide wall having a convex shape configured to guide a portion of a guide wire. A sensor is proximate the first guide wall in a first position, the sensor senses movement of a portion of the guide wire moving from a first position proximate the curved guide wall to a second position distal the first guide wall in a direction perpendicular to the longitudinal axis of the guide wire.
Abstract:
A load suspension and weighing system for a removable reservoir unit of a portable dialysis machine includes a centrally located flexure assembly. The flexure assembly includes magnets and a number of flexure rings which allow for movement of the magnets about a fixed circuit board. Sensors in the circuit board sense changes in the magnetic field as the magnets move in relation to the circuit board. The magnetic field changes produce a voltage output which is used by a processor to generate weight calculations. The top of the flexure assembly is attached to the interior of the dialysis machine. The entirety of the reservoir unit is suspended by a first internal frame that is attached to the bottom of the flexure assembly. Having a single flexure assembly positioned above the reservoir unit provides more accurate weight measurements while also preventing damage to the assembly from water spillage.
Abstract:
To detect a low load of an outrigger with high accuracy and improve alarming accuracy of a roll-over alarming device, the roll-over alarming device for a crane includes a load cell 1 having a coil spring 5 provided with a strain gauge 4, and an upper load cell case 6 and a lower load cell case 7 which support the coil spring 5 from its top and bottom to transfer a load of an outrigger to the coil spring 5, supports 8, 9 for supporting a load when the load having more than a predetermined value acts to restrain yielding of the coil spring 5 being provided between the upper load cell case 6 and the lower load cell case 7, and an alarming section which issues a roll-over alarm on the basis of a load detecting value of the outrigger from the load cell 1.
Abstract:
A sensor device includes an inflatable diaphragm operable to be disposed on a member, and an array of force sensors disposed about the inflatable diaphragm. The array of force sensors provides one or more signals indicative of a location of contact between an object and the inflatable diaphragm.
Abstract:
A pressure sensor device includes a base layer, a deformable layer bonded to the base layer such that the base layer and the deformable layer define at least one inflatable chamber, and at least one pressure sensor fluidly coupled to the at least one inflatable chamber and operable to produce a signal indicative of a pressure within the at least one inflatable chamber.
Abstract:
Structures and sensor assemblies having engagement structures for securing a compliant substrate assembly are disclosed. In one embodiment, a sensor assembly includes a compliant substrate assembly having a base layer, and a deformable layer heat-sealed to the base layer such that the base layer and the deformable layer define at least one inflatable chamber. The sensor assembly further includes a first member proximate to a first edge of the compliant substrate assembly, a second member proximate to a second edge of the compliant substrate assembly, wherein the second edge is opposite the first edge, and at least one pressure sensor fluidly coupled to the at least one inflatable chamber and operable to produce a signal indicative of a pressure within the at least one inflatable chamber.
Abstract:
Sensors having a deformable layer and an outer cover layer and robots incorporating the same are disclosed. In one embodiment, a sensor includes an inflatable diaphragm operable to be disposed on a member, wherein the inflatable diaphragm includes a port. The sensor further includes an outer cover layer disposed around the inflatable diaphragm, wherein the outer cover layer is fabricated from a material having a strength of greater than or equal to 35 cN/dtex, and a pressure sensor fluidly coupled to the port and operable to detect a pressure within the inflatable diaphragm.
Abstract:
Sensor devices including force sensors and robots incorporating the same are disclosed. In one embodiment, a sensor device includes an inflatable diaphragm operable to be disposed on a member, and an array of force sensors disposed about the inflatable diaphragm, wherein the array of force sensors provides one or more signals indicative of a location of contact between an object and the inflatable diaphragm.
Abstract:
A force sensing element is used in a pressure transducer. The force sensing element includes a flat, disc-type spring having a unitary body that circumscribes a central axis, and a plurality of spirals that are continuous with each other and extend radially outwardly from the central axis. The plurality of spirals includes nested symmetrical flights having walls with a non-uniform thickness, and the disc spring is uniformly deflectable along the central axis in response to force acting on the disc-type spring. The spring is configured to have a high accuracy and a high fatigue life such that the spring is suitable for use in high-pressure applications that may require repeatability while operating with over 10 million cycles of unidirectional or bi-directional axial loading.
Abstract:
A load suspension and weighing system for a removable reservoir unit of a portable dialysis machine includes a centrally located flexure assembly. The flexure assembly includes magnets and a number of flexure rings which allow for movement of the magnets about a fixed circuit board. Sensors in the circuit board sense changes in the magnetic field as the magnets move in relation to the circuit board. The magnetic field changes produce a voltage output which is used by a processor to generate weight calculations. The top of the flexure assembly is attached to the interior of the dialysis machine. The entirety of the reservoir unit is suspended by a first internal frame that is attached to the bottom of the flexure assembly. Having a single flexure assembly positioned above the reservoir unit provides more accurate weight measurements while also preventing damage to the assembly from water spillage.