DETECTION DEVICE, DETECTION SYSTEM, DETECTION METHOD, AND PROGRAM

• US 20170199143A1
• Filed: 04/07/2015
• Published: 07/13/2017
• Est. Priority Date: 04/07/2014
• Status: Active Grant

• Current Assignee: School Juridical Person Kitasato Institute
• Original Assignee: School Juridical Person Kitasato Institute
• Inventors: NEBUYA, Satoru
• Granted Patent: US 10,330,620 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 2562/0209 Special features of electrodes classified in A61B5/24, A61B5/25, A61B5/283, A61B5/291, A61B5/296, A61B5/053
• CPC Class Codes: A61B 2562/029 Humidity sensors
• CPC Class Codes: A61B 5/02042 Determining blood loss or bleeding, e.g. during a surgical procedure
• CPC Class Codes: A61B 5/0531 Measuring skin impedance
• CPC Class Codes: A61B 5/14517 for sweat
• CPC Class Codes: A61B 5/6892 Mats
• CPC Class Codes: A61F 13/42 with wetness indicator or alarm
• CPC Class Codes: A61F 2013/424 having an electronic device
• CPC Class Codes: A61M 1/14 Dialysis systems; Artificial kidneys; Blood oxygenators semi-permeable membranes characterised by the material, manufacturing processes therefor B01D71/00 ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
• CPC Class Codes: A61M 2205/13 with means for the detection of operative contact with patient, e.g. lip sensor
• CPC Class Codes: A61M 2205/18 with alarm
• CPC Class Codes: A61M 2205/581 by audible feedback
• CPC Class Codes: A61M 2205/583 by visual feedback
• CPC Class Codes: D02G 3/441 Yarns or threads with antistatic, conductive or radiation-shielding properties electroconductive, anti-static or radiation-shielding filaments D01F1/09, D01F1/106; anti-static fabrics D03D15/533; conducting, insulating or anti-static layers for floor coverings D06N7/0042
• CPC Class Codes: D10B 2403/02431 with electronic components, e.g. sensors or switches
• CPC Class Codes: D10B 2509/00 Medical; Hygiene
• CPC Class Codes: G01N 27/06 of a liquid involving electrolysis G01N27/26
• CPC Class Codes: G01N 33/48785 Electrical and electronic details of measuring devices for physical analysis of liquid biological material not specific to a particular test method, e.g. user interface or power supply
• CPC Class Codes: G01R 23/005 Circuits for comparing several input signals and for indicating the result of this comparison, e.g. equal, different, greater, smaller (comparing phase or frequency of 2 mutually independent oscillations in demodulators)

Abstract

A detection device includes: a frequency property acquisition unit that acquires a frequency property when an alternating-current signal is input to at least two conductive bodies provided on a fiber sheet; and a detection signal output unit that outputs a detection signal when the frequency property acquisition unit acquires a predetermined frequency property.

Claims

1. A detection device comprising:

a frequency property acquisition unit that acquires a frequency property when an alternating-current signal is input to at least two conductive bodies provided on a fiber sheet; and

a detection signal output unit that outputs a detection signal when the frequency property acquisition unit acquires at least one of a frequency property that indicates a predetermined difference according to a frequency difference between the alternating-current signals input to the conductive bodies and a frequency property that indicates a predetermined change according to a time elapse.

2. The detection device according to claim 1, wherein

the frequency property acquisition unit acquires a frequency property when each of an alternating-current signal in a first frequency and an alternating-current signal in a second frequency is input to the at least two conductive bodies, and

the detection signal output unit outputs the detection signal when a difference between a frequency property when the alternating-current signal in the first frequency is input to the conductive bodies and a frequency property when the alternating-current signal in the second frequency is input to the conductive bodies is a predetermined difference.

3. A detection system comprising:

a fiber sheet; and

a detection device, wherein

at least two conductive bodies are provided on the fiber sheet, and

the detection device comprises;

a frequency property acquisition unit that acquires a frequency property when an alternating-current signal is input to at least two conductive bodies provided on the fiber sheet; and

a detection signal output unit that outputs a detection signal when the frequency property acquisition unit acquires at least one of a frequency property that indicates a predetermined difference according to a frequency difference between the alternating-current signals input to the conductive bodies and a frequency property that indicates a predetermined change according to a time elapse.

4. The detection system according to claim 3, wherein

the fiber sheet includes a thread including at least two conductive bodies which are combined such that the conductive bodies do not come into contact with each other.

5. The detection system according to claim 4, wherein

the thread includes a first conductive body, an insulation material having a water absorption property, and a second conductive body, and

the first conductive body is covered by the insulation material having a water absorption property and is further winded by the second conductive body.

6. The detection system according to claim 3, wherein

the two conductive bodies are twisted together such that the conductive bodies do not come into contact with each other.

7. A detection method of a detection device, the detection method comprising:

a frequency property acquisition step of, by way of the detection device, acquiring a frequency property when an alternating-current signal is input to at least two conductive bodies provided on a fiber sheet; and

a detection signal output step of, by the detection device, outputting a detection signal when in the frequency property acquisition step, at least one of a frequency property that indicates a predetermined difference according to a frequency difference between the alternating-current signals input to the conductive bodies and a frequency property that indicates a predetermined change according to a time elapse is acquired.

8. A program that causes a computer to execute

a detection signal output step of outputting a detection signal when, with respect to a frequency property when an alternating-current signal is input to at least two conductive bodies provided on a fiber sheet, at least one of a frequency property that indicates a predetermined difference according to a frequency difference between the alternating-current signals input to the conductive bodies and a frequency property that indicates a predetermined change according to a time elapse is acquired.