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CN-224220308-U - Nursing mattress

CN224220308UCN 224220308 UCN224220308 UCN 224220308UCN-224220308-U

Abstract

The utility model relates to a nursing mattress with a detection function, which mainly comprises a nursing pad, a capacitive sensor, a signal processing module and a bearing surface for sleeping of a human body. The capacitive sensor is arranged between the nursing pad and the bearing surface for the human body to sleep, the human body is positioned above the nursing pad, electrodes on the capacitive sensor are arranged in an array mode to form crossed multi-level mutual capacitance electric field lines, the electric field lines penetrate into the nursing pad, the pressure distribution of the human body to the nursing pad is detected, and the electric field lines are used for detecting the human body urination and defecation.

Inventors

  • SUN TENGCHEN
  • ZENG FANYOU
  • YOU YANAN

Assignees

  • 北京他山科技有限公司

Dates

Publication Date
20260512
Application Date
20240229

Claims (5)

  1. 1. A nursing mattress, characterized in that: The device comprises a nursing pad, a touch sensor, a processing module, a capacitance-digital conversion circuit and a bearing surface for sleeping of a human body; The touch sensor is arranged on the bearing surface and is configured to at least comprise a first surface which is tiled on the bearing surface, the nursing pad is detachably tiled on the first surface and is used for directly bearing the body of a sleeper, at least two electrodes are distributed on the first surface and are used for sensing the dielectric constants of all the positions on the nursing pad in a set detection area, and the distance and/or the area of at least two electrodes are configured to penetrate into the nursing pad through mutual capacitance electric fields constructed by the electrodes to sense the urine condition of the sleeper and/or penetrate above the nursing pad through mutual capacitance electric fields constructed by the electrodes to sense the stool condition of the sleeper; the capacitance-to-digital conversion circuit is respectively coupled with each electrode on the first surface to at least acquire the mutual capacitance between the electrodes; The processing module is coupled with the capacitance-digital conversion circuit.
  2. 2. A nursing mattress as defined in claim 1 wherein: The capacitive digital conversion circuit comprises a first surface, at least four electrodes on the first surface, a switch array and a capacitor digital conversion circuit, wherein the electrodes on the first surface are at least four, the electrodes are distributed in rows and columns to form a lattice with equal spacing, and the capacitor digital conversion circuit is respectively coupled with the electrodes through the switch array.
  3. 3. A nursing mattress as claimed in claim 2, characterized in that: The processing module selectively establishes the interval between two electrodes of the mutual capacitance electric field through the switch array so as to change the electric field penetration range, and/or selectively connects at least two electrodes in parallel through the switch array so as to form a large electrode, and establishes the mutual capacitance electric field through the two large electrodes so as to change the electric field penetration range.
  4. 4. A nursing mattress as claimed in claim 3, characterized in that: the tactile sensor further includes a compressible cushion, a second surface; The first surface is positioned on the top surface of the compressible soft cushion, and the second surface is positioned on the bottom surface of the compressible soft cushion; The second surface is provided with at least two strip-shaped electrodes which are arranged in rows or columns and are positioned below the electrode lattice, and the projection of the strip-shaped electrodes relative to the top surface covers part or all of the area of the electrode above the strip-shaped electrodes; the capacitance-to-digital conversion circuit is coupled to each electrode of the second surface.
  5. 5. The nursing mattress of claim 1, wherein the first surface is provided with an insulating film.

Description

Nursing mattress Technical Field The utility model relates to the field of medical care, in particular to a nursing mattress. Background The nursing pad is made of PE film, non-woven fabrics, fluff pulp, polymer and other materials, and is used for patients with inconvenient actions in hospitals or nursing, such as operation, puerperal care, infant or paralyzed patients, etc. The conventional identification of the urine and the feces on the nursing pad in the current application depends on naked eye judgment of a nursing worker, and has the problem of untimely identification. For the identification of the urine and the feces, the electrode detection has the advantages of easy large-area arrangement and cost, the detection mode based on the electrode can be divided into resistance type and capacitance type, the application is concentrated on the paper diaper, and the electrode detection is partially applied to nursing pads, such as: CN2021110928350 proposes to recognize the urine and the feces through the resistance and/or capacitance between two electrodes on the diaper, wherein the detection device and the electrodes are fixed on the diaper, and although the single detection cost can be controlled at a lower level based on capacitance detection, for the disposable products such as the diaper, nursing pad and the like, even small cost increase can bring huge cost burden to enterprises due to huge consumption. WO2023169606A1 discloses that the paper diaper adopts an electrolytic capacitor between metal film electrodes to detect whether excreted liquid exists, and proposes that the electrodes are fixed in the paper diaper, a detection device can be detached and reused, TWI475981B proposes that an electrochemical capacitor is formed by adopting an anode and a cathode and is detachable from the detection device, and CN113081499B proposes that the paper diaper based on a resistive electrode, and the detection device can be detached and reused as well. The electrode is fixed in the paper diaper to be used as a consumable material in the technology, so that the required laying area of the electrode is large for a nursing pad, and the electrode is used as a throwing type disposable diaper, so that a small cost burden is brought. CN215385061U proposes a nursing pad, electrode straight bar is arranged and is fixed in the middle of the nursing pad and saves electrode laying area, detection device demountable installation hopes to utilize the band to bind and reaches nursing pad and human relatively fixed, and patient's urine can leak to the detection area, but can not necessarily be as ideal state when using, bindes simultaneously and causes discomfort to the patient, especially at the discomfort aggravated under the wounded or long-time lying down. Disclosure of utility model The utility model provides a nursing mattress for improving the defects of the prior art. The nursing mattress comprises a nursing pad, a touch sensor, a processing module, a capacitance-digital conversion circuit and a bearing surface for sleeping a human body, wherein the touch sensor is arranged on the bearing surface and is configured to at least comprise a first surface which is paved on the bearing surface, the nursing pad is detachably paved on the first surface and is used for directly bearing the body of a sleeper, at least two electrodes are distributed on the first surface and are used for sensing the dielectric constant of each position in a set detection area on the nursing pad, the distance and/or the area of the at least two electrodes are configured to penetrate into the nursing pad through mutual capacitance electric fields constructed by the two electrodes so as to sense the urine condition of the sleeper and/or penetrate above the nursing pad through mutual capacitance electric fields constructed by the two electrodes so as to sense the excrement condition of the sleeper, the capacitance-digital conversion circuit is respectively coupled with each electrode of the first surface so as to at least acquire mutual capacitance between the electrodes, and the processing module is coupled with the capacitance-digital conversion circuit and is used for outputting excretion information of the sleeper according to the change of the mutual capacitance. Based on the difference of mutual capacitance caused by different dielectric constants of different substances, through the arrangement of the distance and/or the area of the electrodes, the constructed mutual capacitance electric field penetrates into the nursing pad to detect the existence of urine, and/or the constructed mutual capacitance electric field penetrates above the nursing pad to detect the condition of stool on the nursing pad, so that the data of the excretion of a sleeper can be monitored and analyzed, and through the arrangement of the separation design of the nursing pad and the electrodes, the nursing pad is used as an instant throwing product, the electrodes can be repe