Excrement sensor and preparation method thereof

Abstract

The invention provides an excrement sensor comprising a thin-film capacitive sensor. The sensor comprises an induction strip; the induction strip comprises an upper waterproof film, a lower waterprooffilm, a first detection electrode, a second detection electrode and a first notch. One surface of each of the upper waterproof film and the lower waterproof film is bonded with each other to form aninsulating interlayer; the main body part of the first detection electrode is arranged in the interlayer; the first notch penetrates the upper waterproof film, the lower waterproof film and the firstdetection electrode arranged in the interlayer; rgw first detection electrode in the interlayer is exposed outwards through the first notch to form a first induction line, the first induction line makes contact with excrement to be detected to generate a first double-electric-layer capacitor, and the capacity of the first double-electric-layer capacitor is in direct proportion to the coverage range of the excrement to be detected on the first induction line. The invention further provides a preparation method of the excrement sensor.

Description

technical field [0001] The invention relates to a sensor, in particular to an electric double-layer capacitive excrement sensor capable of distinguishing urine and feces and a preparation method thereof. Background technique [0002] Disposable absorbent products include absorbent sanitary products such as diapers, diapers, toddler pants, urine pads, sanitary napkins, etc. Disposable absorbent products have the problem of timely replacement. If the replacement is too frequent, it will not only be troublesome but also wasteful; If it is too late, it will easily cause leakage, and excrement (especially excrement such as loose stool) will easily cause skin diseases such as diaper rash for a long time. Therefore, a sensor that can detect the excrement status of absorbent articles in real time can be used for Different excreta (such as urine and urine) and different degrees of humidity provide different status information and corresponding prompts, which are of great significance...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a simple, effective and low-cost excrement sensor, which can form various specific detection systems and applications according to needs, so as to solve the problem of existing electric double layer capacitive excrement sensor. The problem of too slow detection speed caused by the large capacitance and resistance in the detection system, the problem of distinguishing urine and feces during the excrement detection process, the influence of adhesives on the detection electrodes during the production process, and the flexibility of product production and application, etc. question

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