Apparatus for measuring shearing force upon sitting
First Claim
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1. An apparatus for measuring a shearing force upon sitting, comprising:
- a shearing force sensor disposed in a specific area of a seat and configured to sense a shearing force generated by a shearing force sensor upon an individual sitting in the seat;
a signal processor configured to filter and amplify a signal received from the shearing force sensor and convert an amplified analog signal into a digital signal; and
a monitoring device configured to analyze the signal converted by the signal processor and display the signal on a screen, wherein a shear force resulting from an individual sitting in the seat is measured in all directions by the apparatus,the shearing force sensor includes a lower plate, a middle plate, and an upper plate that are stacked in a three-layered structure, andthe middle plate includes;
a cross-shaped strain gauge fixing plate inducing independent strains by disposing strain gauges in transverse and longitudinal directions attached thereto, anda fixing part separately disposed across the strain gauge fixing plate and configured to allow the strain gauge fixing plate to be fixed between the lower plate and the upper plate, responding to all directions of shearing forces.
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Abstract
Disclosed is an apparatus for measuring a shearing force upon sitting in a seat in a vehicle. The apparatus includes a shearing force sensor, a signal processor, and a monitoring device. The shearing force sensor is disposed in a compartment in a seat and senses the shearing force generated upon sitting on the seat. The signal processor filters and amplifies a signal from the shearing force sensor 10, and converts an amplified analog signal into a digital signal. The monitoring device analyzes the signal converted by the signal processor and displays the signal. As a result, the apparatus measures all directions of shearing forces generated upon sitting.
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Citations
8 Claims
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1. An apparatus for measuring a shearing force upon sitting, comprising:
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a shearing force sensor disposed in a specific area of a seat and configured to sense a shearing force generated by a shearing force sensor upon an individual sitting in the seat; a signal processor configured to filter and amplify a signal received from the shearing force sensor and convert an amplified analog signal into a digital signal; and a monitoring device configured to analyze the signal converted by the signal processor and display the signal on a screen, wherein a shear force resulting from an individual sitting in the seat is measured in all directions by the apparatus, the shearing force sensor includes a lower plate, a middle plate, and an upper plate that are stacked in a three-layered structure, and the middle plate includes; a cross-shaped strain gauge fixing plate inducing independent strains by disposing strain gauges in transverse and longitudinal directions attached thereto, and a fixing part separately disposed across the strain gauge fixing plate and configured to allow the strain gauge fixing plate to be fixed between the lower plate and the upper plate, responding to all directions of shearing forces. - View Dependent Claims (2, 3, 4, 5)
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6. A method comprising:
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sensing, by a shearing force sensor disposed in a specific area of a seat, a shearing force generated upon an individual sitting in a seat wherein a shear force resulting from an individual sitting in the seat is measured in all directions; filtering and amplifying, by a signal processor, signals received from the shearing force sensor and converting amplified analog signals into digital signals; and analyzing, by a monitoring device, the signal converted by the signal processor and displaying the signal on a screen, wherein the shearing force sensor includes a lower plate, a middle plate, and an upper plate that are stacked in a three-layered structure, and the middle plate includes; a cross-shaped strain gauge fixing plate inducing independent strains by disposing strain gauges in transverse and longitudinal directions attached thereto, and a fixing part separately disposed across the strain gauge fixing plate and configured to allow the strain gauge fixing plate to be fixed between the lower plate and the upper plate, responding to all directions of shearing forces. - View Dependent Claims (7)
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8. A non-transitory computer readable medium containing program instructions executed by a processor, the computer readable medium comprising:
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program instructions that filter and amplify signals representing a shearing force generated upon an individual sitting in a seat wherein a shear force resulting from an individual sitting in the seat is measured in all directions and convert an amplified analog signals into digital signals; and program instructions that analyze the converted digital signals and display the signals on a screen, where the shearing force sensor includes a lower plate, a middle plate, and an upper plate that are stacked in a three-layered structure, and the middle plate includes; a cross-shaped strain gauge fixing plate inducing independent strains by disposing strain gauges in transverse and longitudinal directions attached thereto, and a fixing part separately disposed across the strain gauge fixing plate and configured to allow the strain gauge fixing plate to be fixed between the lower plate and the upper plate, responding to all directions of shearing forces.
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Specification