System for measuring force distributions
First Claim
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1. A system for measuring force distributions with any desired number of measurement sensors arrayed in a matrix, comprising:
- a plurality of sensors emitting proportional electrical signals when subjected to force, said sensors being sampleable in sequence;
means for connecting all said sensors together, individually, or at least in groups at one pole;
controllable digital switch means located at least adjacent said sensors and means for connecting every sensor at another pole to said controllable switch means;
means with input terminals and control lines combined into rows and columns for controlling said switch means from outside said matrix, the number of said control lines being substantially less than the number of sensors, said signals having all substantially the same capacitive load and being all influenced the same by noise signals.
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Abstract
System for measuring force distributions with individual force-measurement sensors that can be polled in sequence, providing a high level of mechanical and electric security against interference at a low cost in circuitry and controls. The measurement-sensor matrix can be designed to prevent crosstalk between the measurement sensors.
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Citations
12 Claims
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1. A system for measuring force distributions with any desired number of measurement sensors arrayed in a matrix, comprising:
- a plurality of sensors emitting proportional electrical signals when subjected to force, said sensors being sampleable in sequence;
means for connecting all said sensors together, individually, or at least in groups at one pole;
controllable digital switch means located at least adjacent said sensors and means for connecting every sensor at another pole to said controllable switch means;
means with input terminals and control lines combined into rows and columns for controlling said switch means from outside said matrix, the number of said control lines being substantially less than the number of sensors, said signals having all substantially the same capacitive load and being all influenced the same by noise signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- a plurality of sensors emitting proportional electrical signals when subjected to force, said sensors being sampleable in sequence;
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11. A system for measuring force distributions with any desired number of measurement sensors arrayed in a matrix, comprising:
- a plurality of sensors emitting proportional electrical signals when subjected to force, said sensors being sampleable in sequence;
means for connecting all said sensors together, individually, or at least in groups at one pole;
controllable digital switch means located at least adjacent said sensors and means for connecting every sensor at another pole to said controllable switch means;
means with input terminals and control lines combined into rows and columns for controlling said switch means from outside said matrix, the number of said control lines being substantially less than the number of sensors, said signals having all substantially the same capacitive load and being all influenced the same by noise signals; and
a source of electrical signal voltage applied to said sensors for actuating said sensors to emit said proportional electrical signals when subjected to force.
- a plurality of sensors emitting proportional electrical signals when subjected to force, said sensors being sampleable in sequence;
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12. A system for measuring force distributions with any desired number of measurement sensors arrayed in a matrix, comprising:
- a plurality of sensors emitting proportional electrical signals when subjected to force, said sensors being sampleable in sequence;
means for connecting all said sensors together, individually, or at least in groups at one pole;
controllable digital switch means located at least adjacent said sensors and means for connecting every sensor at another pole to said controllable switch means;
means with input terminals and control lines combined into rows and columns for controlling said switch means from outside said matrix, the number of said control lines being substantially less than the number of sensors, said signals having all substantially the same capacitive load and being all influenced the same by noise signals;
said sensors comprising capacitors having a side facing a force-application end and comprising of separated conductive surfaces, said switch means with said means with input terminals being positioned directly below said separated conductive surfaces.
- a plurality of sensors emitting proportional electrical signals when subjected to force, said sensors being sampleable in sequence;
Specification