Surface pressure distribution sensor
First Claim
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1. A surface pressure distribution sensor comprising:
- a lower substrate;
a plurality of lower conductors arranged in parallel on an upper surface of the lower substrate;
a flexible upper substrate provided above the lower substrate with a predetermined space therebetween; and
a plurality of upper conductors arranged in parallel on a lower surface of the upper substrate so as to be orthogonal to the lower conductors, wherein a measuring section having a first inner space is provided so that the upper conductors and the lower conductors oppose in a thickness direction therein, wherein a fluid collecting section having a second inner space is disposed beside the measuring section, wherein the surface pressure distribution is detected on the basis of an electrostatic capacitance changed by the pressing of a measuring surface provided on the upper substrate in the measuring section, and wherein the first inner space of the measuring section communicates with the second inner space of the fluid collecting section.
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Abstract
A fluid collecting section is provided beside a measuring section, and an inner space of the fluid collecting section communicates with an inner space of the measuring section. Therefore, when the inner space of the measuring section is collapsed by pressing a measuring surface, fluid can escape toward the fluid collecting section. Consequently, the increase in internal pressure of the inner space of the measuring section is limited, and the upward force applied to an upper substrate in the measuring section is reduced. As a result, measurement sensitivity increases.
14 Citations
5 Claims
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1. A surface pressure distribution sensor comprising:
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a lower substrate;
a plurality of lower conductors arranged in parallel on an upper surface of the lower substrate;
a flexible upper substrate provided above the lower substrate with a predetermined space therebetween; and
a plurality of upper conductors arranged in parallel on a lower surface of the upper substrate so as to be orthogonal to the lower conductors, wherein a measuring section having a first inner space is provided so that the upper conductors and the lower conductors oppose in a thickness direction therein, wherein a fluid collecting section having a second inner space is disposed beside the measuring section, wherein the surface pressure distribution is detected on the basis of an electrostatic capacitance changed by the pressing of a measuring surface provided on the upper substrate in the measuring section, and wherein the first inner space of the measuring section communicates with the second inner space of the fluid collecting section. - View Dependent Claims (2, 3, 4, 5)
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Specification