CN108078678B - Intelligent diaper with multiple induction points and diaper saturation monitoring function and monitoring method - Google Patents
Intelligent diaper with multiple induction points and diaper saturation monitoring function and monitoring method Download PDFInfo
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- CN108078678B CN108078678B CN201810006992.7A CN201810006992A CN108078678B CN 108078678 B CN108078678 B CN 108078678B CN 201810006992 A CN201810006992 A CN 201810006992A CN 108078678 B CN108078678 B CN 108078678B
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- diaper
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/42—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators with wetness indicator or alarm
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/42—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators with wetness indicator or alarm
- A61F2013/424—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators with wetness indicator or alarm having an electronic device
Abstract
The invention discloses an intelligent diaper with multiple sensing points and a diaper saturation monitoring function and a monitoring method. The invention adopts the technical scheme that a plurality of groups of defecation detection electrodes are arranged on a hollowed-out substrate and are placed on the surface of a diaper, and a plurality of groups of saturation detection electrodes are arranged at positions facing the inner side of the diaper; when defecation occurs, the multiplexing unit collects the resistance value between the defecation detection electrodes, judges whether the defecation occurs or not according to the change of the resistance value within a period of time, judges whether the defecation is defecation or urination, judges whether the diaper is saturated or not according to the saturation detection electrode, and prompts replacement if the diaper is saturated; the invention adopts the hollowed-out substrate, realizes the air permeability of the electrode slice, is beneficial to the rapid absorption of the diaper on the excrement and urine, and is also beneficial to improving the comfort level of the infant; the urine and excrement distinguishing capability and the water absorption saturation degree judging function prompt can be realized according to the difference of the excrement and the urine and the saturation.
Description
Technical Field
The invention relates to an intelligent diaper, in particular to an intelligent diaper with multiple sensing points and a diaper saturation monitoring function and a monitoring method thereof.
Background
Because the traditional diaper is frequently changed, the cleaning amount is large, the skin of a baby is easy to soak in urine stains and feces stains carelessly, the cleaning and airing conditions are not good, and bacteria are easy to breed. Disposable diapers are produced in the future and are becoming more and more popular with young parents. Many times, adults often forget to change diapers for babies due to negligence or other reasons, and these factors can harm the health of the babies. The intelligent paper diaper meets the market demand.
The existing intelligent diaper adopts a pair of sensing electrodes with a certain distance to be placed in a sensing area, whether defecation occurs or not is judged within a set threshold range by detecting the resistance value of the sensing electrodes, and the principle is similar to that of a raindrop sensor. The change of the resistance value of the induction electrode means the humidity change of the electrode environment, so another humidity detection mode is to directly adopt a humidity sensor and detect whether defecation exists or not by combining the humidity sensor with the temperature change. However, the existing method can only detect whether the defecation exists or not, and cannot analyze the defecation quantity; and has no ability to distinguish between urination and defecation, which may not be detected if the infant merely defecates; the humidity sensor is combined with the temperature sensor, so that false alarm or false alarm can be easily generated. Moreover, the induction electrode is arranged on the whole substrate, so that the air permeability is poor, and the skin of the baby is greatly damaged.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the intelligent diaper with the functions of monitoring the diaper saturation at multiple sensing points and the monitoring method thereof.
The invention aims to provide an intelligent diaper with a multi-sensing-point diaper saturation monitoring function.
The intelligent diaper with the functions of monitoring the saturation of the diaper at multiple sensing points comprises the following components: the device comprises a substrate, a plurality of groups of detection electrodes and a multiplexing unit; the surface of the substrate is distributed with a plurality of groups of detection electrodes from front to back to form a sensing structure, and each group of detection electrodes comprises two independent sensing electrodes; the substrate is discontinuous, and gaps are formed among the induction electrodes to form a hollow or strip-shaped structure; the sensing structure is arranged on the diaper, a plurality of groups of detection electrodes are distributed from front to back along the central axis of the diaper and face outwards to the skin to form defecation detection electrodes, and the surfaces of the plurality of groups of defecation detection electrodes are tiled with insulating water-permeable surface layers; the multiple groups of detection electrodes of the sensing structure are distributed from front to back along the central axis of the diaper and face inwards to the diaper to form saturation detection electrodes; each induction electrode is connected to the multiplexing unit through a lead respectively; the multiplexing unit is arranged at a position where the surface of the diaper faces the abdomen of the baby and does not influence the movement of the baby; every two induction electrodes of the defecation detection electrodes are selected by the multiplexing unit to form a defecation detection electrode pair, every two induction electrodes of the saturation detection electrodes form a saturation detection electrode pair, and each defecation detection electrode pair and the saturation detection electrode pair are respectively connected to an independent channel of the multiplexing unit; when defecation occurs, the resistance value between a pair of induction electrodes in the defecation detection electrode is changed and is transmitted to the multiplexing unit through the lead; the multiplexing unit judges whether defecating and defecating or urinating according to the resistance value and the change condition in a period of time and transmits the result to the external equipment; meanwhile, the resistance value between a pair of induction electrodes in the saturation detection electrode is changed and is transmitted to the multiplexing unit through a lead; the multiplexing unit judges whether the diaper is saturated or not according to the resistance value and the change condition in a period of time, and transmits the result to external equipment.
The multiplexing unit includes: a switching circuit, a signal processing circuit, an A/D converter, a processor and a communication circuit; each induction electrode is connected to the switching circuit of the multiplexing unit through a lead respectively; the processor selects two induction electrodes in each group of defecation detection electrodes to form a defecation detection electrode pair, and controls the switching circuit to connect the two induction electrodes in the same group to an independent channel of the signal processing circuit of the multiplexing unit; or the processor selects one induction electrode from each two adjacent groups of defecation detection electrodes to form a pair of defecation detection electrodes, and controls the switching circuit to connect two corresponding induction electrodes in the two adjacent groups of defecation detection electrodes to an independent channel of the signal processing circuit of the multiplexing unit; meanwhile, the processor selects two induction electrodes in each group of saturation detection electrodes to form a saturation detection electrode pair, and controls the switching circuit to connect the two induction electrodes in the same group to an independent channel of the signal processing circuit of the multiplexing unit; or the processor selects one induction electrode from each two adjacent groups of saturation detection electrodes to form a pair of saturation detection electrodes, and controls the switching circuit to connect two corresponding induction electrodes in the two adjacent groups of saturation detection electrodes to an independent channel of the signal processing circuit of the multiplexing unit; when defecation occurs, the resistance value between two induction electrodes in the defecation detection electrode pair is changed, the signal processing circuit adopts a preprocessing circuit formed by an analog operational amplifier, the input signal and the output signal of the preprocessing circuit are in a function relation of proportion, logarithm or exponent, and the output signal of the preprocessing circuit is transmitted to the A/D converter; the A/D converter converts the analog signal into a digital signal and transmits the digital signal to the processor; the processor obtains a resistance value through calculation according to the digital signal value of the A/D converter, and judges whether defecating or urinating according to the change condition of the resistance value within a period of time; the processor is connected to the communication circuit, the communication circuit transmits the result to the external equipment, and if the result is excrement, the diaper is reminded to be changed; meanwhile, the resistance value between a pair of induction electrodes in the saturation detection electrode pair is changed and is transmitted to the multiplexing unit through a lead; the multiplexing unit judges whether the diaper is saturated according to the resistance value and the change condition within a period of time, and if the diaper is judged to be saturated, the result is transmitted to external equipment to remind of replacing the diaper.
The multiplexing unit is in a small, exquisite and light shape, the switching circuit, the signal processing circuit, the A/D converter, the processor and the communication circuit are integrated on a high-density circuit board, and a shell is sleeved outside the circuit board.
The external equipment is a mobile phone or a repeater; the multiplexing unit is connected with the mobile phone or the repeater in a Bluetooth mode, or the multiplexing unit is connected with the repeater through wireless connection technologies such as Zigbee, 6LowPAN or Lora, and the mobile phone or the repeater is accessed to the Internet through wireless fidelity (WIFI) or a mobile network; or the multiplexing unit directly accesses the Internet in a narrow-band Internet of things NB-IoT mode based on WIFI and honeycomb. Through the network, the guardian remotely inquires various related information of the baby to know the real-time condition of the baby.
The position of the multiplexing unit does not influence the comfort of the baby as much as possible, the multiplexing unit is arranged on the diaper facing the baby belly, and the multiplexing unit is clamped between the diaper and the baby belly after the diaper is worn.
The insulating water-permeable surface layer is made of cotton material.
The sensing structure is externally arranged on the surface of the diaper or is internally arranged in the diaper; in the peripheral mode, the substrate of the sensing structure is arranged on the surface, attached to the skin, of the diaper, a plurality of groups of defecation detecting electrodes face the skin outwards respectively, insulating water-permeable surface layers are laid on the surfaces of a plurality of groups of defecation sensing electrodes, and a plurality of groups of saturation detecting electrodes face the diaper inwards; in a built-in mode, a sensing structure is arranged in a flow guide layer of the diaper, a plurality of groups of defecation detection electrodes face outwards to the skin, a plurality of groups of saturation detection electrodes face inwards to the diaper, and an insulating water-permeable surface layer is arranged on the surfaces of a plurality of groups of induction electrodes on the flow guide layer.
The size of the substrate hollow is 0.1-40 mm; the multiple groups of detection electrodes are prepared on the substrate in a photoetching, compression joint, printing or corrosion mode.
The multiple groups of detection electrodes can be designed in different arrangement modes according to different babies of men and women. The density of the detection electrode at the front position is designed to be higher for the boy baby, so that a small amount of urination can be more sensitively monitored, the density of the detection electrode at the middle part and the rear part is designed to be lower, materials are saved under the condition that the situation that the male baby does not miss reports is ensured, and the cost and the design difficulty are reduced. By the same token, the detection electrodes at two ends are designed for the treasure for women to have low density, and the detection electrodes at the middle position are designed to have high density.
In addition, the density of the detection electrode is directly related to the lower limit of urine volume for triggering alarm. Denser electrodes may have better sensitivity but may cause problems with excessive wiring; sparser electrodes may reduce the number of wires, but may miss reports when urine volume is too low. Therefore, the electrodes are arranged in a non-uniform distribution mode, so that the defecation detection sensitivity is high while the number of connecting wires is small.
The invention also aims to provide a monitoring method of the intelligent diaper with the diaper saturation monitoring function at multiple sensing points.
The invention discloses a monitoring method of an intelligent diaper with multiple sensing points and a diaper saturation monitoring function, which comprises the following steps:
1) multiple groups of detection electrodes distributed on the surface of the substrate from front to back to form a sensing structure, wherein each group of detection electrodes comprises two independent detection electrodes
The vertical induction electrodes are discontinuous, and gaps are formed among the induction electrodes to form a hollow or strip-shaped structure;
the sensing structure is arranged on the diaper, a plurality of groups of detection electrodes are distributed from front to back along the central axis of the diaper and face outwards to the skin,
forming defecation detection electrodes, and spreading insulating water-permeable surface layers on the surfaces of the plurality of groups of defecation detection electrodes; and, of the sensing structure
The multiple groups of detection electrodes are distributed from front to back along the central axis of the diaper and face inwards towards the diaper to form saturation detection electrodes;
each induction electrode is connected to the multiplexing unit through a lead respectively;
2) the multiplexing unit is arranged at a position where the surface of the diaper faces the abdomen of the baby and does not influence the movement of the baby;
3) every two induction electrodes of the multiplexing unit selection defecation detection electrode form a defecation detection electrode pair, and the saturation
Every two induction electrodes of the detection electrode form a saturation detection electrode pair, and each defecation detection electrode pair and saturation
The degree detection electrode pairs are respectively connected to one independent channel of the multiplexing unit;
4) when defecation occurs, the resistance value between a pair of induction electrodes in the defecation detection electrode pair is changed and is transmitted to the defecation detection electrode pair through the lead
A multiplexing unit; the multiplexing unit judges whether defecation occurs or not according to the resistance value and the change condition in a period of time and judges whether defecation occurs or not
Whether the excrement is urine or urine, and the result is transmitted to external equipment, if the excrement is urine, the diaper is reminded to be changed;
5) meanwhile, the resistance value between a pair of induction electrodes in the saturation detection electrode pair is changed and is transmitted to the multiplex through a lead
A unit; the multiplexing unit judges whether the diaper is saturated or not according to the change condition in a period of time through the resistance value,
the results are transmitted to an external device, which if saturated, alerts the diaper to be changed.
In step 3), the processor selects two sensing electrodes in each group of defecation detection electrodes to form a defecation detection electrode pair, and controls the switching circuit to connect the two sensing electrodes in the same group to an independent channel of the signal processing circuit of the multiplexing unit; or the processor selects one induction electrode from each two adjacent groups of defecation detection electrodes to form a pair of defecation detection electrodes, and controls the switching circuit to connect two corresponding induction electrodes in the two adjacent groups of defecation detection electrodes to an independent channel of the signal processing circuit of the multiplexing unit; meanwhile, the processor selects two induction electrodes in each group of saturation detection electrodes to form a saturation detection electrode pair, and controls the switching circuit to connect the two induction electrodes in the same group to an independent channel of the signal processing circuit of the multiplexing unit; or the processor selects one induction electrode from each two adjacent groups of saturation detection electrodes to form a pair of saturation detection electrodes, and controls the switching circuit to connect two corresponding induction electrodes in the two adjacent groups of saturation detection electrodes to an independent channel of the signal processing circuit of the multiplexing unit.
In step 4), when defecation occurs, the resistance value between two induction electrodes in the defecation detection electrode pair is changed, the signal processing circuit adopts a preprocessing circuit formed by an analog operational amplifier, the input signal and the output signal of the preprocessing circuit are in a function relation of proportion, logarithm or exponent, and the output signal of the preprocessing circuit is transmitted to the A/D converter; the A/D converter converts the analog signal into a digital signal and transmits the digital signal to the processor; the processor obtains a resistance value through calculation according to the digital signal value of the A/D converter, and judges whether defecating or urinating according to the change condition of the resistance value within a period of time; the processor is connected to the communication circuit, and the communication circuit transmits the result to the external equipment; meanwhile, the resistance value between a pair of induction electrodes in the saturation detection electrode pair is changed and is transmitted to the multiplexing unit through a lead; the multiplexing unit judges whether the diaper is saturated or not according to the change condition of the resistance value within a period of time through the resistance value, transmits the result to external equipment, and reminds to replace the diaper if the result is judged to be saturated.
In the step 4), the period of time is 1 s-10 min.
In step 4), the processor judges whether to defecate or not and whether to defecate or urinate, and specifically comprises the following steps:
a) the processor continuously records the resistance value data between two induction electrodes of one defecation detection electrode pair within a period of time, wherein the period of time is 1 s-10 min;
b) finding out the maximum value, the minimum value, the average value and the root mean square value of the resistance value data in the period of time as reference data;
c) selecting a time window for defecation judgment, and finding out the maximum value and the minimum value of resistance value data in the time window, wherein the time window is 1-10 seconds;
d) calculating a slope according to the maximum value and the minimum value in the time window, thereby obtaining the change rate of the resistance value;
e) judging whether defecation occurs or not according to the change rate of the resistance value, if the change rate exceeds a defecation threshold value, judging that the defecation occurs, and if the change rate does not exceed the defecation threshold value, judging that the defecation does not occur;
f) and judging whether the patient defecates or urinates according to the time for which the resistance value is kept in the defecating threshold, wherein if the keeping time exceeds the defecating threshold, the patient is judged to defecate, and if not, the patient is judged to urinate.
Wherein, in the step e), the defecation threshold value is 10-30% of the total measuring range of the A/D converter.
In step f), the stool threshold is 30 s-30 min.
In step 4), the multiplexing unit judges whether the diaper is saturated, and comprises the following steps:
a) presetting of resistance value range when diaper is saturated:
providing a new dry diaper, measuring the saturation of the diaper at that time between a pair of sensing electrodes in a pair of sensing electrodes
Resistance value of the resistance value to make the diaper absorb water and reach saturation, and testing the saturation degree detection electrode of the saturated diaper
And setting the resistance of the diaper at saturation based on the test saturation resistance value
A range of values;
b) when a new diaper is used, the resistance value of the resistance value between the saturation detection electrode pairs is in a high state and is larger than 1M omega, and when urine exists on the diaper, the resistance value between the saturation detection electrodes can be instantly pulled down to a low state and is smaller than 100K omega;
c) the processor continuously records resistance value data between two induction electrodes of a saturation detection electrode pair within a period of time, wherein the period of time is 1 s-10 min;
d) finding out the maximum value, the minimum value, the average value and the root mean square value of the resistance value data in the period of time as reference data;
e) selecting a time window for judging saturation, and calculating a resistance value in the time window, wherein the time window is 1-10 seconds;
f) and judging whether the resistance value is saturated or not according to the resistance value, if the resistance value is in the resistance value range when the diaper is saturated, and the holding time exceeds a saturation holding threshold value, judging that the diaper is saturated, and if not, judging that the diaper is unsaturated.
In the step a), the resistance value range of the saturated diaper is 80-100% of the tested saturated resistance value.
In step f), the saturation holding threshold is 30 s-30 min.
The invention has the advantages that:
the invention adopts the technical scheme that a plurality of groups of defecation detection electrodes are arranged on a hollowed-out substrate and are placed on the surface of a diaper, and a plurality of groups of saturation detection electrodes are arranged at positions facing the inner side of the diaper; when defecation occurs, the multiplexing unit collects the resistance value between the defecation detection electrodes, judges whether the defecation occurs or not according to the change of the resistance value within a period of time, judges whether the defecation is defecation or urination, judges whether the diaper is saturated or not according to the saturation detection electrode, and prompts replacement if the diaper is saturated; the invention adopts the hollowed-out substrate, realizes the air permeability of the electrode slice, is beneficial to the rapid absorption of the diaper on the excrement and urine, and is also beneficial to improving the comfort level of the infant; the urine and excrement distinguishing capability and the water absorption saturation degree judgment are realized, and different functional prompts can be realized according to different defecates and urinates.
Drawings
FIG. 1 is a block diagram of a multi-sensor point intelligent diaper with diaper saturation monitoring in accordance with the present invention;
FIGS. 2(a) - (c) are schematic diagrams of various embodiments of multiple sets of detection electrodes of the intelligent diaper with multiple sensing points and diaper saturation monitoring function according to the present invention;
fig. 3 is a flow chart of a monitoring method of the intelligent diaper with the diaper saturation monitoring function at multiple sensing points according to the invention.
Detailed Description
The invention will be further elucidated by means of specific embodiments in the following with reference to the drawing.
Example one
In this embodiment, the set of detecting electrodes includes two sensing electrodes independent of each other.
As shown in fig. 1, the intelligent diaper with multiple sensing points and diaper saturation monitoring function of the embodiment includes: the device comprises a substrate, a plurality of groups of detection electrodes and a multiplexing unit; wherein, a plurality of groups of detection electrodes are uniformly distributed on the surface of the substrate from front to back to form a sensing structure; the substrate is discontinuous, and gaps are formed among the induction electrodes to form a hollow or strip-shaped structure; a plurality of groups of detection electrodes of the sensing structure are uniformly distributed from front to back along the central axis of the diaper and face outwards to the surface of the skin to form defecation detection electrodes; the multiple groups of detection electrodes of the sensing structure are uniformly distributed from front to back along the central axis of the diaper and face inwards towards the diaper to form saturation detection electrodes; laying insulating water-permeable surface layers on the surfaces of the plurality of groups of defecation detection electrodes; each induction electrode is connected to the multiplexing unit through a lead respectively; the multiplexing unit is in a small, exquisite, light and thin shape, is arranged on the surface of the diaper, faces the abdomen of the baby and does not influence the movement of the baby.
The multiplexing unit includes: a switching circuit, a signal processing circuit, an A/D converter, a processor and a communication circuit; each induction electrode is respectively connected to the switching circuit of the multiplexing unit through a lead; the processor selects two induction electrodes in each group of defecation detection electrodes to form a defecation detection electrode pair, and controls the switching circuit to connect the two induction electrodes in the same group to an independent channel of the signal processing circuit of the multiplexing unit; or the processor selects one induction electrode from each two adjacent groups of defecation detection electrodes to form a pair of defecation detection electrodes, and controls the switching circuit to connect two corresponding induction electrodes in the two adjacent groups of defecation detection electrodes to an independent channel of the signal processing circuit of the multiplexing unit; meanwhile, the processor selects two induction electrodes in each group of saturation detection electrodes to form a saturation detection electrode pair, and controls the switching circuit to connect the two induction electrodes in the same group to an independent channel of the signal processing circuit of the multiplexing unit; or the processor selects one induction electrode from each two adjacent groups of saturation detection electrodes to form a pair of saturation detection electrodes, and controls the switching circuit to connect two corresponding induction electrodes in the two adjacent groups of saturation detection electrodes to an independent channel of the signal processing circuit of the multiplexing unit; when defecation occurs, the resistance value between two induction electrodes in the defecation detection electrode pair is changed, the signal processing circuit adopts a preprocessing circuit formed by an analog operational amplifier, the input signal and the output signal of the preprocessing circuit are in a function relation of proportion, logarithm or exponent, and the output signal of the preprocessing circuit is transmitted to the A/D converter; the A/D converter converts the analog signal into a digital signal and transmits the digital signal to the processor; the processor obtains a resistance value through calculation according to the digital signal value of the A/D converter, and judges whether defecating or urinating according to the change condition of the resistance value within a period of time; the processor is connected to the communication circuit, and the communication circuit transmits the result to the external equipment; meanwhile, the resistance value between a pair of induction electrodes in the saturation detection electrode pair is changed and is transmitted to the multiplexing unit through a lead; the multiplexing unit judges whether the diaper is saturated or not according to the resistance value and the change condition within a period of time, and if the diaper is judged to be saturated, the result is transmitted to external equipment to remind of replacing the diaper.
The multiplexing unit is small and light, and has a size of 40 × 25 × 5mm in this embodiment.
As shown in fig. 2(a), three sets of detection electrodes are provided, each set of detection electrodes includes two independent and relatively parallel strip-shaped sensing electrodes, forming a detection electrode pair. Alternatively, as shown in fig. 2(b), 8 sets of sensing electrodes are provided, each set of sensing electrodes comprising two separate sensing electrodes of complementary shape. Alternatively, as shown in fig. 2(c), in the present embodiment, 2 sets of detection electrodes are provided, and each set of detection electrodes includes two independent sensing electrodes that are interlaced with each other.
The monitoring method of the intelligent diaper with the multiple sensing points and the diaper saturation monitoring function in the embodiment is shown in fig. 3, and comprises the following steps:
1) a plurality of groups of detection electrodes are distributed on the surface of the substrate from front to back to form a sensing structure, each group of detection electrodes comprises two independent induction electrodes, the substrate is discontinuous, and a gap is formed between every two induction electrodes to form a hollow or strip-shaped structure; the sensing structure is arranged on the diaper, a plurality of groups of detection electrodes are distributed from front to back along the central axis of the diaper and face outwards to the skin to form defecation detection electrodes, and the surfaces of the plurality of groups of defecation detection electrodes are tiled with insulating water-permeable surface layers; the multiple groups of detection electrodes of the sensing structure are distributed from front to back along the central axis of the diaper and face inwards to the diaper to form saturation detection electrodes; each induction electrode is connected to the multiplexing unit through a lead respectively;
2) the multiplexing unit is arranged at a position where the surface of the diaper faces the abdomen of the baby and does not influence the movement of the baby;
3) every two induction electrodes of the defecation detection electrodes are selected by the multiplexing unit to form a defecation detection electrode pair, every two induction electrodes of the saturation detection electrodes form a saturation detection electrode pair, and each defecation detection electrode pair and the saturation detection electrode pair are respectively connected to an independent channel of the multiplexing unit;
4) when there is defecation, the defecation detection electrode detects whether defecation and defecation or urination:
a) the processor continuously records resistance value data between two induction electrodes of one detection electrode pair within a period of time, wherein the period of time is 1 s-10 min;
b) finding out the maximum value, the minimum value, the average value and the root mean square value of the resistance value data in the period of time as reference data;
c) selecting a time window for defecation judgment, and finding out the maximum value and the minimum value of resistance value data in the time window, wherein the time window is 1-10 seconds;
d) calculating a slope according to the maximum value and the minimum value in the time window, thereby obtaining the change rate of the resistance value;
e) judging whether defecation occurs or not according to the change rate of the resistance value, if the change rate exceeds a defecation threshold value, judging that the defecation occurs, if the change rate does not exceed the defecation threshold value, judging that the defecation does not occur, and transmitting the result to external equipment;
f) and judging whether the excrement is excrement or urine according to the time for which the resistance value is kept in the excrement threshold value, transmitting the result to external equipment, judging that the excrement is excrement if the keeping time exceeds the excrement threshold value, reminding of replacing a diaper, and otherwise, judging that the urine is urine.
5) Meanwhile, the saturation detection electrode pair monitors the saturation:
a) presetting of resistance value range when diaper is saturated:
providing a new dry diaper, measuring the resistance value of the resistance value between a pair of induction electrodes in the saturation detection electrode pair of the diaper at the moment to ensure that the diaper absorbs water and reaches saturation, testing the resistance value between a pair of induction electrodes in the saturation detection electrode of the saturated diaper, and setting the resistance value range of the saturated diaper to be 80-100% according to the tested saturation resistance value at the moment;
b) when a new diaper is used, the resistance value of the resistance value between the saturation detection electrode pairs is in a high state and is larger than 1M omega, and when urine exists on the diaper, the resistance value between the saturation detection electrodes can be instantly pulled down to a low state and is smaller than 100K omega;
c) the processor continuously records resistance value data between two induction electrodes of a saturation detection electrode pair within a period of time, wherein the period of time is 1 s-10 min;
d) finding out the maximum value, the minimum value, the average value and the root mean square value of the resistance value data in the period of time as reference data;
e) selecting a time window for judging saturation, and calculating a resistance value in the time window, wherein the time window is 1-10 seconds;
f) and judging whether the resistance value is saturated or not according to the judgment of the resistance value, if the resistance value is in the resistance value range when the diaper is saturated and the holding time exceeds 1min, judging that the diaper is saturated, and if not, judging that the diaper is unsaturated.
Finally, it is noted that the disclosed embodiments are intended to aid in further understanding of the invention, but those skilled in the art will appreciate that: various substitutions and modifications are possible without departing from the spirit and scope of the invention and the appended claims. Therefore, the invention should not be limited to the embodiments disclosed, but the scope of the invention is defined by the appended claims.
Claims (11)
1. A multi-sensing-point intelligent diaper having a diaper saturation monitoring function, the intelligent diaper comprising: the device comprises a substrate, a plurality of groups of detection electrodes and a multiplexing unit;
the surface of the substrate is distributed with a plurality of groups of detection electrodes from front to back to form a sensing structure, and each group of detection electrodes comprises two independent sensing electrodes; the multiple groups of detection electrodes are arranged in a non-uniform distribution mode; the substrate is discontinuous, and gaps are formed among the induction electrodes to form a hollow or strip-shaped structure; the sensing structure is arranged on the diaper, a plurality of groups of detection electrodes are distributed from front to back along the central axis of the diaper and face outwards to the skin to form defecation detection electrodes, and the surfaces of the plurality of groups of defecation detection electrodes are tiled with insulating water-permeable surface layers; the multiple groups of detection electrodes of the sensing structure are distributed from front to back along the central axis of the diaper and face inwards to the diaper to form saturation detection electrodes; each induction electrode is connected to the multiplexing unit through a lead respectively;
the multiplexing unit includes: a switching circuit, a signal processing circuit, an A/D converter, a processor and a communication circuit; the multiplexing unit is arranged at a position where the surface of the diaper faces the abdomen of the baby and does not influence the movement of the baby; every two induction electrodes of the defecation detection electrodes are selected by the multiplexing unit to form a defecation detection electrode pair, every two induction electrodes of the saturation detection electrodes form a saturation detection electrode pair, and each defecation detection electrode pair and the saturation detection electrode pair are respectively connected to an independent channel of the multiplexing unit;
when defecation occurs, the resistance value between a pair of induction electrodes in the defecation detection electrode is changed and is transmitted to the multiplexing unit through the lead; the signal processing circuit in the multiplexing unit adopts a preprocessing circuit composed of an analog operational amplifier, an input signal and an output signal of the preprocessing circuit are in a function relation of proportion, logarithm or exponent, and the output signal of the preprocessing circuit is transmitted to an A/D converter; the A/D converter converts the analog signal into a digital signal and transmits the digital signal to the processor; the processor obtains a resistance value through calculation according to the digital signal value of the A/D converter, judges whether defecating and defecating or urinating according to the resistance value and the change condition of the resistance value within a period of time, and transmits the result to external equipment; meanwhile, the resistance value between a pair of induction electrodes in the saturation detection electrode is changed and is transmitted to the multiplexing unit through a lead; the multiplexing unit judges whether the diaper is saturated or not according to the resistance value and the change condition in a period of time, and transmits the result to external equipment.
2. The intelligent diaper according to claim 1, wherein each sensing electrode is respectively connected to the switching circuit of the multiplexing unit through a lead; the processor selects two induction electrodes in each group of defecation detection electrodes to form a defecation detection electrode pair, and controls the switching circuit to connect the two induction electrodes in the same group to an independent channel of the signal processing circuit of the multiplexing unit; or the processor selects one induction electrode from each two adjacent groups of defecation detection electrodes to form a pair of defecation detection electrodes, and controls the switching circuit to connect two corresponding induction electrodes in the two adjacent groups of defecation detection electrodes to an independent channel of the signal processing circuit of the multiplexing unit; meanwhile, the processor selects two induction electrodes in each group of saturation detection electrodes to form a saturation detection electrode pair, and controls the switching circuit to connect the two induction electrodes in the same group to an independent channel of the signal processing circuit of the multiplexing unit; or the processor selects one induction electrode from each two adjacent groups of saturation detection electrodes to form a pair of saturation detection electrodes, and controls the switching circuit to connect two corresponding induction electrodes in the two adjacent groups of saturation detection electrodes to an independent channel of the signal processing circuit of the multiplexing unit.
3. The intelligent diaper according to claim 1, wherein the multiplexing unit is of a small, light and thin shape, and the switching circuit, the signal processing circuit, the a/D converter, the processor and the communication circuit are integrated on a high-density circuit board, and a housing is provided outside the circuit board.
4. The intelligent diaper of claim 1, wherein the external device is a cell phone or a repeater; the multiplexing unit is connected with a mobile phone or a repeater in a Bluetooth mode, and the mobile phone or the repeater is accessed to the Internet through wireless fidelity (WIFI) or a mobile network; or the multiplexing unit directly accesses the Internet in a narrow-band Internet of things NB-IoT mode based on WIFI and honeycomb.
5. The intelligent diaper of claim 1, wherein the external device is a repeater; the multiplexing unit is connected with the repeater through a wireless connection technology, and the repeater is accessed to the Internet through wireless fidelity (WIFI) or a mobile network.
6. The intelligent diaper of claim 1, wherein the sensing structure is disposed externally to the surface of the diaper or internally within the diaper; in the peripheral mode, the substrate of the sensing structure is arranged on the surface, attached to the skin, of the diaper, a plurality of groups of defecation detecting electrodes face the skin outwards respectively, insulating water-permeable surface layers are laid on the surfaces of a plurality of groups of defecation sensing electrodes, and a plurality of groups of saturation detecting electrodes face the diaper inwards; in a built-in mode, a sensing structure is arranged in a flow guide layer of the diaper, a plurality of groups of defecation detection electrodes face outwards to the skin, a plurality of groups of saturation detection electrodes face inwards to the diaper, and an insulating water-permeable surface layer is arranged on the surfaces of a plurality of groups of induction electrodes on the flow guide layer.
7. The intelligent diaper of claim 1, wherein the plurality of sets of detection electrodes are arranged differently for different babies: the density of the detection electrodes at the front part of the multi-group detection electrodes of the diaper for the boy baby is high, and the density of the detection electrodes at the middle part and the rear part of the multi-group detection electrodes is low; the detection electrodes at both ends of the plurality of groups of detection electrodes of the diaper for the female baby have low density, and the detection electrodes at the middle position have high density.
8. The monitoring method of a multi-sensing-point intelligent diaper having a diaper saturation monitoring function according to any one of claims 1 to 7, characterized in that the monitoring method comprises the steps of:
1) a plurality of groups of detection electrodes are distributed on the surface of the substrate from front to back to form a sensing structure, each group of detection electrodes comprises two independent induction electrodes, the substrate is discontinuous, and a gap is formed between every two induction electrodes to form a hollow or strip-shaped structure; the sensing structure is arranged on the diaper, a plurality of groups of detection electrodes are distributed from front to back along the central axis of the diaper and face outwards to the skin to form defecation detection electrodes, and the surfaces of the plurality of groups of defecation detection electrodes are tiled with insulating water-permeable surface layers; the multiple groups of detection electrodes of the sensing structure are distributed from front to back along the central axis of the diaper and face inwards to the diaper to form saturation detection electrodes; each induction electrode is connected to the multiplexing unit through a lead respectively;
2) the multiplexing unit is arranged at a position where the surface of the diaper faces the abdomen of the baby and does not influence the movement of the baby;
3) every two induction electrodes of the defecation detection electrodes are selected by the multiplexing unit to form a defecation detection electrode pair, every two induction electrodes of the saturation detection electrodes form a saturation detection electrode pair, and each defecation detection electrode pair and the saturation detection electrode pair are respectively connected to an independent channel of the multiplexing unit;
4) when defecation occurs, the resistance value between a pair of induction electrodes in the defecation detection electrode pair is changed and is transmitted to the multiplexing unit through the lead; the multiplexing unit judges whether defecating and whether defecating or urinating exist according to the resistance value and the change condition within a period of time, and transmits the result to external equipment, and if the defecating exists, the diaper is reminded to be replaced;
5) meanwhile, the resistance value between a pair of induction electrodes in the saturation detection electrode pair is changed and is transmitted to the multiplexing unit through a lead; the multiplexing unit judges whether the diaper is saturated or not according to the change condition within a period of time through the resistance value, transmits the result to external equipment, and reminds to replace the diaper if the result is saturated.
9. The monitoring method according to claim 8, wherein in step 4), when there is defecation, the resistance value between the two sensing electrodes in the defecation detecting electrode pair is changed, the signal processing circuit adopts a preprocessing circuit composed of an analog operational amplifier, the input signal and the output signal of the preprocessing circuit are in a proportional, logarithmic or exponential functional relationship, and the output signal of the preprocessing circuit is transmitted to the A/D converter; the A/D converter converts the analog signal into a digital signal and transmits the digital signal to the processor; the processor obtains a resistance value through calculation according to the digital signal value of the A/D converter, and judges whether defecating or urinating according to the change condition of the resistance value within a period of time; the processor is connected to the communication circuit, and the communication circuit transmits the result to the external equipment; meanwhile, the resistance value between a pair of induction electrodes in the saturation detection electrode pair is changed and is transmitted to the multiplexing unit through a lead; the multiplexing unit judges whether the diaper is saturated or not according to the change condition of the resistance value within a period of time through the resistance value, transmits the result to external equipment, and reminds to replace the diaper if the result is judged to be saturated.
10. The method for monitoring as claimed in claim 8, wherein in step 4), the processor determines whether to defecate and whether to defecate or urinate, including the steps of:
a) the processor continuously records resistance value data between two induction electrodes of one defecation detection electrode pair within a period of time, wherein the period of time is 1 s-10 min;
b) finding out the maximum value, the minimum value, the average value and the root mean square value of the resistance value data in the period of time as reference data;
c) selecting a time window for defecation judgment, and finding out the maximum value and the minimum value of resistance value data in the time window;
d) calculating a slope according to the maximum value and the minimum value in the time window, thereby obtaining the change rate of the resistance value;
e) judging whether defecation occurs or not according to the change rate of the resistance value, if the change rate exceeds a defecation threshold value, judging that the defecation occurs, and if the change rate does not exceed the defecation threshold value, judging that the defecation does not occur;
f) and judging whether the patient defecates or urinates according to the time for which the resistance value is kept in the defecating threshold, wherein if the keeping time exceeds the defecating threshold, the patient is judged to defecate, and if not, the patient is judged to urinate.
11. The monitoring method of claim 8, wherein in step 4), the multiplexing unit determines whether the diaper is saturated, comprising the steps of:
a) presetting of resistance value range when diaper is saturated:
providing a new dry diaper, measuring the resistance value of the resistance value between a pair of induction electrodes in the saturation detection electrode pair at the time of the diaper to ensure that the diaper absorbs water and reaches saturation, testing the resistance value between a pair of induction electrodes in the saturation detection electrode pair of the saturated diaper, and setting the resistance value range of the saturated diaper according to the tested saturation resistance value at the time;
b) when a new diaper is used, the resistance value of the resistance value between the saturation detection electrode pairs is in a high state, and when urine is present on the diaper, the resistance value between the saturation detection electrodes is instantaneously pulled down to a low state;
c) the processor continuously records resistance value data between two induction electrodes of a saturated detection electrode pair within a period of time, wherein the period of time is 1 s-10 min;
d) finding out the maximum value, the minimum value, the average value and the root mean square value of the resistance value data in the period of time as reference data;
e) selecting a time window for saturation judgment, and calculating a resistance value in the time window;
f) and judging whether the resistance value is saturated or not according to the resistance value, if the resistance value is in the resistance value range when the diaper is saturated, and the holding time exceeds a saturation holding threshold value, judging that the diaper is saturated, and if not, judging that the diaper is unsaturated.
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| CN109124886A (en) * | 2018-07-14 | 2019-01-04 | 李朋 | A kind of diaper alarm set |
| CN109124885A (en) * | 2018-07-14 | 2019-01-04 | 李朋 | A kind of intelligence diaper monitoring device |
| CN109481153A (en) * | 2018-12-14 | 2019-03-19 | 深圳代科技有限公司 | A kind of sense electronics wet absorption articles |
| CN111000684B (en) * | 2019-09-27 | 2022-04-01 | 张兴利 | Paper diaper external monitoring system and monitoring method based on multi-sensor fusion |
| CN113876491B (en) * | 2021-09-17 | 2023-03-24 | 北京他山科技有限公司 | Sanitary product capable of distinguishing shit and urine |
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| CN200963246Y (en) * | 2006-05-09 | 2007-10-24 | 赵子甫 | Multifunctional paper panty |
| TWI327063B (en) * | 2007-05-10 | 2010-07-11 | Ind Tech Res Inst | A urine detection system and method |
| JP5358103B2 (en) * | 2008-02-14 | 2013-12-04 | ユニ・チャーム株式会社 | Automatic urine treatment equipment |
| EP2308435B8 (en) * | 2008-07-28 | 2014-04-30 | Ckicom Technology Limited | Disposable diaper state detecting device and disposable diaper state monitoring system |
| CN106859857A (en) * | 2017-02-22 | 2017-06-20 | 王旭升 | A kind of intelligent bed-wetting detecting system |
| CN106983604A (en) * | 2017-05-12 | 2017-07-28 | 成都凡米科技有限公司 | A kind of novel intelligent paper diaper warning device and alarm method |
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