SENSOR FOR HUMIDITY AND MANAGEMENT SYSTEM THEREFOR
First Claim
1. A humidity sensor for a diaper comprising:
- two electrode pads having water permeability, conductivity and flexibility, wherein each of the electrode pads is made by combining fine threads of a mesh-type electric conductor onto a paper or a fabric, or is made by mixing thread and fine thread of an electric conductor;
an absorption layer for absorbing moisture, the absorption layer being disposed between the two electrode pads; and
a sensing unit for detecting humidity through a resistance variation between the two electrode pads.
0 Assignments
0 Petitions
Accused Products
Abstract
The present invention relates to a sensor for humidity, etc. which has high precision, very small electrical power consumption and simplified composition, and a management system therefor. The sensor and the management system therefor according to the present invention are also economical. The sensor according to the present invention comprises two electrode pads and an absorption layer for absorbing moisture, etc. between them, and detects a capacitance variation and a resistance variation between the electrode pads, measuring humidity, etc. in real time. In the sensor, one or both of the electrode pads can be made by printing or coating a conductive material on a paper pad or a fabric pad in a mesh shape of fine lines. Or the electrode pads can be fabrics with fine thread of a mesh-type electric conductor coated by an absorptive material having an insulating property.
11 Citations
9 Claims
-
1. A humidity sensor for a diaper comprising:
-
two electrode pads having water permeability, conductivity and flexibility, wherein each of the electrode pads is made by combining fine threads of a mesh-type electric conductor onto a paper or a fabric, or is made by mixing thread and fine thread of an electric conductor; an absorption layer for absorbing moisture, the absorption layer being disposed between the two electrode pads; and a sensing unit for detecting humidity through a resistance variation between the two electrode pads. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A humidity sensor for a diaper comprising:
-
two electrode pads having conductivity and flexibility, wherein each of the electrode pads is made by combining fine threads of a mesh-type electric conductor onto a polymer compound film; an absorption layer for absorbing moisture, the absorption layer being disposed between the two electrode pads; and a sensing unit for detecting humidity through a resistance or capacitance variation between the two electrode pads. - View Dependent Claims (7, 8)
-
-
9. A humidity sensor for a diaper comprising:
-
two electrode pads having conductivity and flexibility, wherein one of the electrode pads is made by combining fine threads of a mesh-type electric conductor onto a polymer compound film, and the other of two electrode pads is made by combining fine threads of a mesh-type electric conductor onto a paper or a fabric, or is made by mixing thread and fine thread of an electric conductor; an absorption layer for absorbing moisture, the absorption layer being disposed between the two electrode pads; and a sensing unit for detecting humidity through a resistance or capacitance variation between the two electrode pads.
-
Specification