CN203591387U - Urine wetness detection structure for diaper - Google Patents
Urine wetness detection structure for diaper Download PDFInfo
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- CN203591387U CN203591387U CN201320522838.8U CN201320522838U CN203591387U CN 203591387 U CN203591387 U CN 203591387U CN 201320522838 U CN201320522838 U CN 201320522838U CN 203591387 U CN203591387 U CN 203591387U
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Abstract
The utility model discloses a urine wetness detection structure for a diaper. The urine wetness detection structure comprises a detection polar plate and a body polar plate, wherein the diaper is arranged between the detection polar plate and the body polar plate, and the detection polar plate and the body polar plate form a parallel plate capacitor; and the detection polar plate is electrically connected with a capacitance detection circuit. The urine wetness detection structure for a diaper is accurate in detection, safe and healthy, good in comfortableness, and low in use cost.
Description
Technical field
This utility model relates to a kind of medical treatment and nursing technology, has been specifically related to a kind of wet detection architecture of urine of diaper.
Background technology
After urinating, need in time more diaper-exchanging for infant and anergy old people, otherwise may produce harmful effect to skin, even may cause the serious consequence such as decubital ulcer and skin ulceration to old people.Because urination time is uncertain, cause white elephant to guardian.So whether there is detecting diaper by the wet product of urine, this series products is mainly divided three classes at present, wherein the first kind is to utilize 2 strip metals or conductive material to make induction electrode, conventionally under state, article 2, between induction electrode, insulate, after urine is communicated with 2 induction electrodes, induction electrode conducting, thereby judge diaper wetting state, in the time using this series products, must be placed in real time between diaper and human body, poor and the induction electrode of comfortableness can be subject to the pollution of urine, if reuse inadequate health, if disposable use increases again cost cost, in addition, induction electrode is that metal material is made, sharp metal has the danger that scratches user skin, Equations of The Second Kind is to utilize humidity sensor induction wetting state, has equally comfortableness that the first kind exists and the problem of poor hygienic, and humidity sensor needs could recover for a long time measuring ability after wet by single urine, does not obviously meet actual user demand, the 3rd class is to utilize temperature sensor to detect wetting state, and the method can often be subject to the impact of ambient temperature and report by mistake, and therefore this method is also obviously inappropriate.
Therefore there are the wet detection architecture of urine and the detection method that need to seek a kind of diaper to solve above-mentioned technical problem.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of urine of diaper wet detection architecture, detect accurately, safety and sanitation, comfortableness are good, and use cost is low.
To achieve these goals, the technical scheme that this utility model provides is as follows:
The wet detection architecture of urine of diaper, the wet detection architecture of described urine comprises:
Survey pole plate and human body pole plate, described diaper is between described detection pole plate and human body pole plate, and described detection pole plate and human body pole plate form parallel plate capacitor;
Wherein, described detection pole plate is electrically connected with capacitive detection circuit, for detection of the capacitance of described parallel plate capacitor, judges wetting state and the wet degree of urine of diaper by this capacitance variation.
Preferably, described capacitive detection circuit comprises MCU, and described MCU connects respectively load prongs and detects pin;
Wherein, described load prongs is connected with detection pole plate by discharging and recharging resistance, for described detection pole plate is carried out to charging and discharging; Whether described detection pin is connected with detection pole plate, complete for detection of the charging and discharging of described detection pole plate; The charging and discharging time of pole plate surveyed in MCU record, and according to charging and discharging time change calculations capacitance variation.
Preferably, described MCU has also exported shielding pin, described shielding pin by shielding resistance be connected to described load prongs and described in discharge and recharge between resistance, for shielding the interference of environmental factors.
Preferably, described discharging and recharging between resistance and detection pole plate is provided with filtration module, described filtration module comprises filter capacitor, described filter capacitor one end ground connection, the other end lead up to the first filter resistance Access Probe pole plate, its separately lead up to the second filter resistance with described in discharge and recharge resistance and be connected, described in described detection pin is connected to, discharge and recharge between resistance and described the second filter resistance.
Preferably, the wet detection architecture of described urine also comprises radio transmitting device and remote-end alarm equipment, and described capacitive detection circuit is by radio transmitting device and remote-end alarm equipment connection.
Preferably, it is upper that described detection pole plate is laid in bed, and described diaper is between described detection pole plate and human body pole plate.
Preferably, described detection pole plate and capacitive detection circuit are fixedly installed on described diaper jointly.
Preferably, a kind of urine of diaper as above detection method that wets, wherein, adopts capacitive detection circuit to detect the capacitance of described parallel plate capacitor, judge the wetting state of diaper and the urine degree that wets by capacitance variation, and described determination methods is:
In the time that capacitance uprises and exceed setting threshold, judge that diaper is urinated wet and urinated the degree of wetting;
In the time that capacitance is constant, judge that diaper is not wet by urine.
Preferably, described capacitive detection circuit comprises MCU, and described MCU connects respectively load prongs and detects pin; The detecting step of described capacitive detection circuit comprises:
A), detection pin is set to input state, load prongs output high level, load prongs is charged to surveying pole plate, MCU starts timing simultaneously;
B), when detecting pin when high level detected, survey pole plate and complete charging, stop timing, MCU records the charging interval, detects pin output high level simultaneously, and the level that detects pin is drawn high to its running voltage;
C), detection pin is set to input state, load prongs output low level, surveys pole plate and discharges to load prongs, MCU starts timing simultaneously;
D), when detecting pin when low level detected, survey pole plate and complete electric discharge, stop timing, MCU records discharge time, detects pin output low level simultaneously, and the level that detects pin is pulled low to 0;
E) sum discharge time that the charging interval that, MCU b) records according to above-mentioned steps and above-mentioned steps d) record is calculated the capacitance of parallel plate capacitor;
F), repeat above-mentioned steps a), b), c), d) and e) by setting-up time interval, draw and calculate capacitance variation.
Preferably, described step a) also comprises: a0), initialization step;
Described initialization step is: load prongs is set to input state.
Operation principle of the present utility model and advantage: according to the computing formula C=ε S/d of the capacitance of parallel plate capacitor, wherein ε is the dielectric constant of medium between pole plate, and S is polar plate area, d be polar plate spacing from, therefore can know and learn, when in S and the constant situation of d, C is directly proportional to ε.The relative dielectric constant of air is approximately 1, and the relative dielectric constant of water is about 80, and therefore, when the medium between parallel-plate is when air becomes water, the capacitance of parallel plate capacitor will enlarge markedly.According to this principle, again because human body has conduction property, diaper in use, directly contacts with human body, and this utility model is by arranging detection pole plate at diaper opposite side, and human body now becomes human body pole plate, has therefore formed parallel plate capacitor.Do not urinated under wet state at diaper, medium between parallel-plate of the present utility model is air, therefore the capacitance of parallel plate capacitor keeps lower numerical value always, urinated under wet state at diaper, medium between parallel-plate of the present utility model contains urine (its main component is water), therefore the capacitance of parallel plate capacitor can obviously increase, the capacitance of parallel plate capacitor also can do along with the wet degree (being the urine content between parallel-plate) of the urine of diaper the variation of different amplitudes simultaneously, therefore this utility model is connected to detect with detection pole plate the capacitance variation that obtains parallel plate capacitor by capacitive detection circuit is set, and then can judge the wetting state of diaper and urinate wet degree.
Further, according to the relation formula C=Q/U between the capacitance of parallel plate capacitor and electric weight, wherein C is capacitance, Q is electric weight, and U is voltage, therefore known, in the time that voltage is constant, the size of capacitance is directly proportional to the number that can hold electric charge on parallel plate capacitor pole plate.Again according to relation formula Q=I × t, wherein Q is electric weight, I is electric current, t is the time, therefore known, if adopt identical electric current to discharge and recharge to parallel plate capacitor, the number of electric charge was directly proportional to the time of discharging and recharging, therefore capacitive detection circuit of the present utility model is by discharging and recharging and record to surveying pole plate the capacitance that the time of discharging and recharging calculates parallel plate capacitor, and repeat to discharge and recharge surveying pole plate by setting-up time interval, finally calculate capacitance variation, and then complete the capacitance detecting of capacitive detection circuit.
The capacitive detection circuit arranging by the above operation principle of this utility model and scheme, specifically further preferably, capacitive detection circuit comprises MCU, MCU connects respectively load prongs and detects pin, load prongs is connected with detection pole plate by discharging and recharging resistance, for carrying out charging and discharging to surveying pole plate; Detect pin and be connected with detection pole plate, whether complete for detection of the charging and discharging of surveying pole plate; The charging and discharging time of pole plate surveyed in MCU record, and according to charging and discharging time change calculations capacitance variation; Testing process and structure are all very simple, and accuracy of detection is high.
This utility model both can detect the wetting state of diaper, can also detect the wet degree of urine of diaper simultaneously, detected accurately; And because this utility model does not need to come in contact with human body, avoided comfortableness that contact brings and the problem of health aspect, therefore this utility model safety and sanitation, comfortableness are good; Further, owing to not there is not the problem of health aspect, this utility model can repeatedly use, and use cost is low, and capacitive detection circuit of the present utility model can adopt button cell power supply simultaneously, and running voltage is low, without any sharp-pointed portion, uses safety.
Accompanying drawing explanation
In order to be illustrated more clearly in this utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, the accompanying drawing the following describes is only some embodiment that record in this utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural section schematic diagram of parallel plate capacitor of the present utility model;
Fig. 2 is the circuit connection diagram of the capacitive detection circuit under this utility model specific embodiment;
Fig. 3 is the detecting step block diagram of the capacitive detection circuit under this utility model specific embodiment;
Fig. 4 is the level oscillogram that detects pin in Fig. 3.
The specific embodiment
This utility model embodiment discloses a kind of wet detection architecture of urine of diaper, and the wet detection architecture of urine comprises: survey pole plate and human body pole plate, diaper is being surveyed between pole plate and human body pole plate, surveys pole plate and human body pole plate and forms parallel plate capacitor; Wherein, survey pole plate and be electrically connected with capacitive detection circuit, for detection of the capacitance of parallel plate capacitor, judge wetting state and the wet degree of urine of diaper by this capacitance variation.
Preferably, capacitive detection circuit comprises MCU, and MCU connects respectively load prongs and detects pin; Wherein, load prongs is connected with detection pole plate by discharging and recharging resistance, for carrying out charging and discharging to surveying pole plate; Detect pin and be connected with detection pole plate, whether complete for detection of the charging and discharging of surveying pole plate; The charging and discharging time of pole plate surveyed in MCU record, and according to charging and discharging time change calculations capacitance variation.
This utility model embodiment also discloses a kind of wet detection method of urine of diaper as above, wherein, adopt capacitive detection circuit to detect the capacitance of parallel plate capacitor, judge wetting state and the wet degree of urine of diaper by capacitance variation, determination methods is: in the time that capacitance uprises and exceed setting threshold, judge that diaper is urinated wet and urinated the degree of wetting; In the time that capacitance is constant, judge that diaper is not wet by urine.
Preferably, capacitive detection circuit comprises MCU, and MCU connects respectively load prongs and detects pin; The detecting step of capacitive detection circuit comprises:
A), detection pin is set to input state, load prongs output high level, load prongs is charged to surveying pole plate, MCU starts timing simultaneously;
B), when detecting pin when high level detected, survey pole plate and complete charging, stop timing, MCU records the charging interval, detects pin output high level simultaneously, and the level that detects pin is drawn high to its running voltage;
C), detection pin is set to input state, load prongs output low level, surveys pole plate and discharges to load prongs, MCU starts timing simultaneously;
D), when detecting pin when low level detected, survey pole plate and complete electric discharge, stop timing, MCU records discharge time, detects pin output low level simultaneously, and the level that detects pin is pulled low to 0;
E) sum discharge time that the charging interval that, MCU b) records according to above-mentioned steps and above-mentioned steps d) record is calculated the capacitance of parallel plate capacitor;
F), repeat above-mentioned steps a), b), c), d) and e) by setting-up time interval, calculate capacitance variation.
The operation principle of this utility model embodiment and advantage: according to the computing formula C=ε S/d of the capacitance of parallel plate capacitor, wherein ε is the dielectric constant of medium between pole plate, and S is polar plate area, d be polar plate spacing from, therefore can know and learn, when in S and the constant situation of d, C is directly proportional to ε.The relative dielectric constant of air is approximately 1, and the relative dielectric constant of water is about 80, and therefore, when the medium between parallel-plate is when air becomes water, the capacitance of parallel plate capacitor will enlarge markedly.According to this principle, again because human body has conduction property, diaper in use, directly contacts with human body, and this utility model embodiment is by arranging detection pole plate at diaper opposite side, and human body now becomes human body pole plate, has therefore formed parallel plate capacitor.Do not urinated under wet state at diaper, medium between the parallel-plate of this utility model embodiment is air, therefore the capacitance of parallel plate capacitor keeps lower numerical value always, urinated under wet state at diaper, medium between the parallel-plate of this utility model embodiment contains urine (its main component is water), therefore the capacitance of parallel plate capacitor can obviously increase, the capacitance of parallel plate capacitor also can do along with the wet degree (being the urine content between parallel-plate) of the urine of diaper the variation of different amplitudes simultaneously, therefore this utility model embodiment is connected to detect with detection pole plate the capacitance variation that obtains parallel plate capacitor by capacitive detection circuit is set, and then can judge the wetting state of diaper and urinate wet degree.
Further, according to the relation formula C=Q/U between the capacitance of parallel plate capacitor and electric weight, wherein C is capacitance, Q is electric weight, and U is voltage, therefore known, in the time that voltage is constant, the size of capacitance is directly proportional to the number that can hold electric charge on parallel plate capacitor pole plate.Again according to relation formula Q=I × t, wherein Q is electric weight, I is electric current, t is the time, therefore known, if adopt identical electric current to discharge and recharge to parallel plate capacitor, the number of electric charge was directly proportional to the time of discharging and recharging, therefore the capacitive detection circuit of this utility model embodiment is by discharging and recharging and record to surveying pole plate the capacitance that the time of discharging and recharging calculates parallel plate capacitor, and repeat to discharge and recharge surveying pole plate by setting-up time interval, finally calculate capacitance variation, and then complete the capacitance detecting of capacitive detection circuit.
The capacitive detection circuit arranging by the above operation principle of this utility model embodiment and scheme, specifically further preferably, capacitive detection circuit comprises MCU, MCU connects respectively load prongs and detects pin, load prongs is connected with detection pole plate by discharging and recharging resistance, for carrying out charging and discharging to surveying pole plate; Detect pin and be connected with detection pole plate, whether complete for detection of the charging and discharging of surveying pole plate; The charging and discharging time of pole plate surveyed in MCU record, and according to charging and discharging time change calculations capacitance variation; Testing process and structure are all very simple, and accuracy of detection is high.
This utility model embodiment both can detect the wetting state of diaper, can also detect the wet degree of urine of diaper simultaneously, detected accurately; And because this utility model embodiment does not need to come in contact with human body, avoided comfortableness that contact brings and the problem of health aspect, therefore this utility model embodiment safety and sanitation, comfortableness are good; Further, owing to not there is not the problem of health aspect, this utility model embodiment can repeatedly use, use cost is low, and the capacitive detection circuit of this utility model embodiment can adopt button cell power supply simultaneously, and running voltage is low, without any sharp-pointed portion, use safety.
In order to make those skilled in the art person understand better the technical scheme in this utility model, below in conjunction with the accompanying drawing in this utility model embodiment, technical scheme in this utility model embodiment is clearly and completely described, obviously, described embodiment is only this utility model part embodiment, rather than whole embodiment.Based on the embodiment in this utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all should belong to the scope of this utility model protection.
Shown in Figure 1, a kind of wet detection architecture of urine of diaper, the wet detection architecture of urine comprises: survey pole plate 30 and human body pole plate 20, diaper 10 is being surveyed between pole plate 30 and human body pole plate 20, surveys pole plate 30 and human body pole plate 20 and forms parallel plate capacitor; Wherein, survey pole plate 30 and be electrically connected with capacitive detection circuit 40, for detection of the capacitance of parallel plate capacitor, judge wetting state and the wet degree of urine of diaper 10 by this capacitance variation.
Particularly, in order to ensure safety of the present utility model, the concrete preparation technology who surveys pole plate 30 can adopt: printing conductive carbon slurry or silver slurry on plastic film, also can be to pass through FPC(Flexible Printed Circuit, FPC, flexible printed circuit board) soft pcb board (the Printed Circuit Board that makes of technique, printed circuit board), these can specifically be selected according to physical condition and demand, do not produce sharp-pointed portion as long as guarantee to survey pole plate 30.
Preferably, shown in Figure 2, capacitive detection circuit 40 comprises that MCU(figure is not shown), the GPIO(General Purpose Input Output of MCU, universal input/output) pin connects respectively load prongs 1 and detects pin 2; Wherein, load prongs 1 is connected with detection pole plate 30 by discharging and recharging resistance R 1, for carrying out charging and discharging to surveying pole plate 30; Detect pin 2 and be connected with detection pole plate 30, whether complete for detection of the charging and discharging of surveying pole plate 30; The charging and discharging time of pole plate 30 surveyed in MCU record, and according to charging and discharging time change calculations capacitance variation.
Because environmental factors is larger for the interference factor of capacitive detection circuit 40, therefore this utility model affects accuracy of detection in order to shield the interference of environmental factors, further preferably, in the present embodiment, MCU has also exported shielding pin 3, and shielding pin 3 is connected to load prongs 1 and is discharged and recharged between resistance R 1 by shielding resistance R 2.Affect accuracy of detection for the noise jamming on filtering charge-discharge circuit, further preferably, in the present embodiment, discharge and recharge resistance R 1 and survey between pole plate 30 and be provided with filtration module M1, filtration module M1 comprises filter capacitor C1, filter capacitor C1 one end ground connection, the other end lead up to the first filter resistance R3 Access Probe pole plate 30, its separately lead up to the second filter resistance R4 with discharge and recharge resistance R 1 and be connected, detect pin 2 and be connected to and discharge and recharge between resistance R 1 and the second filter resistance R4.Further preferably, the wet detection architecture of urine also comprises radio transmitting device (scheming not shown) and remote-end alarm equipment (scheming not shown), the wet degree signal of the diaper wetting state that capacitive detection circuit 40 obtains judgement and urine is transferred to remote-end alarm equipment by radio transmitting device, the greatly convenient activity to guardian, guardian can carry out far-end and check this diaper wetting state and the wet degree signal of urine, to process in time.
More specifically, in the present embodiment, the resistance that discharges and recharges resistance R 1 is 1M Ω, and the resistance of shielding resistance R 2 is 10K Ω, and the resistance of the first filter resistance R3 and the second filter resistance R4 is 4.7K, and the capacity of filter capacitor C1 is 5pF.
For being applicable to old man and the infant of long-term bed, preferably, foil detector can be made into large area pole plate, particularly, can arrange and be about 500 × 500mm, in use, detection pole plate 30 is laid in to bed upper, diaper 20 is being surveyed between pole plate 30 and human body pole plate 10.
For being applicable to the suitably user of activity, preferably, foil detector can be made into small size pole plate, particularly, can arrange and be about 10 × 20mm, survey pole plate 30 and capacitive detection circuit 40 and be jointly fixedly installed on diaper 20, compact conformation, small and exquisite, is convenient to user activity.
Refer to shown in Fig. 3 and Fig. 4, a kind of wet detection method of urine of diaper as above, wherein, adopt capacitive detection circuit 40 to detect the capacitance of parallel plate capacitor, judge wetting state and the wet degree of urine of diaper 20 by capacitance variation, determination methods is: in the time that capacitance uprises and exceed setting threshold, judge that diaper 20 is wet by urine and the wet degree of quilt urine; In the time that capacitance is constant, judge that diaper 20 is not wet by urine.
Wherein, in embodiment of the present utility model, setting threshold can specifically be set according to actual needs, particularly, when setting threshold is set when lower, the wetting state of this utility model embodiment is higher with the sensitivity of the wet degree of urine,, in the time that diaper is wet by the urine of small amount urine, still can judge that diaper 20 quilt urine are wet and urinated the degree of wetting; Otherwise, when setting threshold is set when higher, the sensitivity of the wetting state of this utility model embodiment and the wet degree of urine is lower, in the time that diaper is wet by the urine of small amount urine, can not judge that diaper 20 is wet by urine and urinated wet degree, this is can affect hardly the comfort level of user owing to being urinated wet diaper by small amount urine, is therefore guaranteeing under the prerequisite of user comfort level, can also effectively avoid frequently diaper-exchanging more of guardian; This utility model embodiment can arrange concrete setting threshold size according to the condition of diaper user, no longer specifically carries out word herein and repeats.
Particularly, capacitive detection circuit 40 comprises MCU, and MCU connects respectively load prongs 1, detects pin 2 and shielding pin 3; The detecting step of capacitive detection circuit 40 comprises:
A0), initialization step: load prongs 1 is set to input state, and shielding pin 3 output low levels, complete the initialization of capacitive detection circuit 40, further guarantee accuracy of detection of the present utility model;
A), detection pin 2 is set to input state, load prongs 1 is exported high level, and load prongs 1 is charged to surveying pole plate 30 by discharging and recharging resistance R 1, the first filter resistance R3 and the second filter resistance R4, and MCU starts timing simultaneously;
B), in the time that detection pin 2 detects high level (being that level reaches the VH shown in Fig. 4), survey pole plate 30 and complete charging, stop timing, MCU records charging interval t1, detect pin 2 simultaneously and export high level, time delay t3, draws high the level that detects pin 2 to its running voltage (being that level reaches the VCC shown in Fig. 4);
C), detection pin 2 is set to input state, load prongs 1 output low level, surveys pole plate 30 and discharges to load prongs 1 by discharging and recharging resistance R 1, the first filter resistance R3 and the second filter resistance R4, and MCU starts timing simultaneously;
D), when detecting pin 2 when low level (being that level reaches the VL shown in Fig. 4) detected, survey pole plate 30 and complete electric discharge, stop timing, MCU records t2 discharge time, detect pin 30 output low levels, time delay t4, is pulled low to 0 by the level that detects pin 30 simultaneously;
E), t2 sum discharge time (being t1+t2) that d) records of the charging interval t1 that b) records according to above-mentioned steps of MCU and above-mentioned steps, calculate the capacitance of parallel plate capacitor;
F), repeat above-mentioned steps a0 by setting-up time interval), a), b), c), d) and e), calculate capacitance variation.
Because capacitance may be subject to the impact of external environment, can repeatedly carry out rapidly above-mentioned charge and discharge process, by t1+t2 being averaged to calculate the capacitance of parallel plate capacitor, can further improve accuracy of detection of the present utility model.
To those skilled in the art, obviously this utility model is not limited to the details of above-mentioned one exemplary embodiment, and in the situation that not deviating from spirit of the present utility model or basic feature, can realize this utility model with other concrete form.Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims rather than above-mentioned explanation, is therefore intended to all changes that drop in the implication and the scope that are equal to important document of claim to include in this utility model.Any Reference numeral in claim should be considered as limiting related claim.
In addition, be to be understood that, although this description is described according to embodiment, but be not that each embodiment only comprises an independently technical scheme, this narrating mode of description is only for clarity sake, those skilled in the art should make description as a whole, and the technical scheme in each embodiment also can, through appropriately combined, form other embodiments that it will be appreciated by those skilled in the art that.
Claims (6)
1. the wet detection architecture of the urine of diaper, is characterized in that, the wet detection architecture of described urine comprises:
Survey pole plate and human body pole plate, described diaper is between described detection pole plate and human body pole plate, and described detection pole plate and human body pole plate form parallel plate capacitor;
Wherein, described detection pole plate is electrically connected with capacitive detection circuit;
Described capacitive detection circuit comprises MCU, and described MCU connects respectively load prongs and detects pin;
Wherein, described load prongs is connected with detection pole plate by discharging and recharging resistance; Described detection pin is connected with detection pole plate.
2. the wet detection architecture of the urine of diaper as claimed in claim 1, is characterized in that, described MCU has also exported shielding pin, described shielding pin by shielding resistance be connected to described load prongs and described in discharge and recharge between resistance.
3. the wet detection architecture of the urine of diaper as claimed in claim 1, it is characterized in that, described discharging and recharging between resistance and detection pole plate is provided with filtration module, described filtration module comprises filter capacitor, described filter capacitor one end ground connection, the other end lead up to the first filter resistance Access Probe pole plate, its separately lead up to the second filter resistance with described in discharge and recharge resistance and be connected, described in described detection pin is connected to, discharge and recharge between resistance and described the second filter resistance.
4. the wet detection architecture of the urine of diaper as claimed in claim 1, is characterized in that, the wet detection architecture of described urine also comprises radio transmitting device and remote-end alarm equipment, and described capacitive detection circuit is by radio transmitting device and remote-end alarm equipment connection.
5. the wet detection architecture of the urine of diaper as claimed in claim 1, is characterized in that, it is upper that described detection pole plate is laid in bed, and described diaper is between described detection pole plate and human body pole plate.
6. the wet detection architecture of the urine of diaper as claimed in claim 1, is characterized in that, described detection pole plate and capacitive detection circuit are fixedly installed on described diaper jointly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320522838.8U CN203591387U (en) | 2013-08-26 | 2013-08-26 | Urine wetness detection structure for diaper |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320522838.8U CN203591387U (en) | 2013-08-26 | 2013-08-26 | Urine wetness detection structure for diaper |
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| CN203591387U true CN203591387U (en) | 2014-05-14 |
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| CN201320522838.8U Expired - Lifetime CN203591387U (en) | 2013-08-26 | 2013-08-26 | Urine wetness detection structure for diaper |
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Granted publication date: 20140514 |