CN114432043B - Diaper state monitoring system - Google Patents
Diaper state monitoring system Download PDFInfo
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- CN114432043B CN114432043B CN202210179003.0A CN202210179003A CN114432043B CN 114432043 B CN114432043 B CN 114432043B CN 202210179003 A CN202210179003 A CN 202210179003A CN 114432043 B CN114432043 B CN 114432043B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 20
- 210000002700 urine Anatomy 0.000 claims abstract description 114
- 239000007789 gas Substances 0.000 claims abstract description 77
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims abstract description 67
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims abstract description 67
- 230000027939 micturition Effects 0.000 claims abstract description 56
- 230000013872 defecation Effects 0.000 claims abstract description 33
- 238000009736 wetting Methods 0.000 claims abstract description 32
- 238000004891 communication Methods 0.000 claims abstract description 20
- 238000001514 detection method Methods 0.000 claims description 8
- 230000000630 rising effect Effects 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 description 16
- 210000003608 fece Anatomy 0.000 description 12
- 206010016766 flatulence Diseases 0.000 description 11
- 230000008859 change Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 230000005059 dormancy Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 230000035772 mutation Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/0044—Sulphides, e.g. H2S
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display
- G01N33/0063—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display using a threshold to release an alarm or displaying means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The invention provides a urine non-wetting state monitoring system which comprises a data acquisition device and an intelligent terminal, wherein the data acquisition device comprises a humidity sensor, a hydrogen sulfide gas sensor, a control main board, a Bluetooth communication module and a power module, the humidity sensor, the hydrogen sulfide gas sensor, the Bluetooth communication module and the power module are electrically connected with the control main board, the data acquisition device is in Bluetooth communication connection with the intelligent terminal, and the intelligent terminal is used for receiving humidity data and hydrogen sulfide gas concentration data acquired by the data acquisition device, judging the current urine non-wetting state by utilizing a preset urination recognition algorithm and a defecation recognition algorithm, and prompting a user to replace the current urine non-wetting state in time when the current urine non-wetting state meets preset alarm conditions. The sensor part of the urine non-wetting state monitoring system independently forms a device, so that the sensor can be detached to be reused on different urine non-wetting states, and the cost of urine non-wetting monitoring is reduced.
Description
Technical Field
The invention relates to the technical field of diaper, in particular to a diaper state monitoring system.
Background
The diaper is also called diaper, paper diaper, diaper and diaper, and is worn on a person to prevent random urination and defecation. The occurrence of the diaper greatly changes the lives of infants and nurseries, and the convenience is one main reason for people to choose the diaper. The diaper uses a strong water-absorbing material, and some of the diaper can absorb water up to 50 times the weight of the diaper. However, the current diaper generally has no function of monitoring urination/defecation of infants and reminding parents of urination/defecation of infants due to price limitation.
Accordingly, the prior art is still in need of improvement and development.
Disclosure of Invention
The invention mainly aims to solve the technical problems that the existing diaper monitoring system cannot be reused and has high cost.
The invention provides a urine non-wetting state monitoring system which comprises a data acquisition device and an intelligent terminal, wherein the data acquisition device comprises a humidity sensor, a hydrogen sulfide gas sensor, a control main board, a Bluetooth communication module and a power module, the humidity sensor, the hydrogen sulfide gas sensor, the Bluetooth communication module and the power module are electrically connected with the control main board, the data acquisition device is in Bluetooth communication connection with the intelligent terminal, and the intelligent terminal is used for receiving humidity data and hydrogen sulfide gas concentration data acquired by the data acquisition device, judging the current urine non-wetting state by utilizing a preset urination recognition algorithm and a defecation recognition algorithm, and prompting a user to replace the current urine non-wetting state in time when the current urine non-wetting state meets preset alarm conditions.
In an alternative embodiment of the first aspect of the present invention, the urination recognition algorithm comprises:
taking first humidity data acquired by the humidity sensor for the first time as a reference value; acquiring second humidity data of the current moment acquired by the humidity sensor, calculating a first difference value between the second humidity data and the first humidity data, and judging that urination does not occur if the first difference value is negative or if the first difference value is positive but the first difference value is smaller than a preset first threshold value; and if the first difference value is positive and the first difference value is larger than the first threshold value, judging that urination occurs.
In an optional implementation manner of the first aspect of the present invention, if the first difference is positive and the first difference is greater than the first threshold, the determining that urination occurs includes:
comparing the first difference value with a second threshold value, and if the first difference value is larger than the second threshold value, judging that an alarm condition is met, and informing a user of timely replacing the diaper; if the first difference value is smaller than the second threshold value, judging that the alarm condition is not met, and entering secondary urination judgment.
In an optional implementation manner of the first aspect of the present invention, if the first difference value is smaller than the second threshold value, the determining that the alarm condition is not satisfied, and entering the secondary urination determination includes:
taking the second humidity data as a reference value, acquiring third humidity data of the next moment acquired by the humidity sensor, calculating a second difference value between the third humidity data and the second humidity data, and judging that urination does not occur if the second difference value is negative or if the second difference value is positive but the second difference value is smaller than a preset first threshold value; and if the second difference value is positive and the second difference value is larger than the first threshold value, judging that urination occurs.
In an optional implementation manner of the first aspect of the present invention, if the second difference is positive and the second difference is greater than the first threshold, the determining that urination occurs includes:
comparing the second difference value with a third threshold value, if the second difference value is larger than the third threshold value, judging that an alarm condition is met, and informing a user of timely replacing the diaper; if the second difference value is smaller than the third threshold value, judging that the alarm condition is not met, entering into three urination judgment, and taking the third humidity data as a reference value in the three urination judgment.
In an alternative embodiment of the first aspect of the present invention, the bowel movement identification algorithm comprises:
taking first hydrogen sulfide concentration data acquired by the hydrogen sulfide gas sensor for the first time as a reference value; acquiring second hydrogen sulfide concentration data at the current moment acquired by the hydrogen sulfide gas sensor, calculating a third difference value between the second hydrogen sulfide concentration data and the first hydrogen sulfide concentration data, and judging that defecation does not occur if the third difference value is negative or positive but the third difference value is smaller than a preset fourth threshold value; and if the third difference value is positive and the third difference value is larger than the fourth threshold value, judging that defecation is suspected to occur.
In an optional implementation manner of the first aspect of the present invention, the determining that the feces are suspected to occur after the third difference is positive and the third difference is greater than the fourth threshold includes:
and acquiring a plurality of follow-up hydrogen sulfide concentration data in a period of time from the current moment acquired by the hydrogen sulfide gas sensor, judging that defecation does not occur if the concentration change trend of the follow-up hydrogen sulfide concentration data in a period of time from the current moment acquired by the follow-up hydrogen sulfide gas sensor is gradual decrease of the hydrogen sulfide concentration, and judging that defecation occurs if the concentration change trend of the follow-up hydrogen sulfide concentration data in a period of time from the current moment acquired by the hydrogen sulfide gas sensor is increase of the hydrogen sulfide concentration or the hydrogen sulfide concentration area is stable, and notifying a user of timely replacement of diaper.
In an optional implementation manner of the first aspect of the present invention, the data acquisition device further includes a temperature sensor, and the temperature sensor is electrically connected to the control motherboard.
In an optional implementation manner of the first aspect of the present invention, the data acquisition device further includes a magnetic charging module, and the magnetic charging module is electrically connected to the power module.
In an alternative embodiment of the first aspect of the present invention, the humidity sensor collects 1 humidity data every 1 second, and the hydrogen sulfide gas sensor collects 1 hydrogen sulfide gas concentration data every 16 seconds.
The beneficial effects are that: the invention provides a urine non-wetting state monitoring system which comprises a data acquisition device and an intelligent terminal, wherein the data acquisition device comprises a humidity sensor, a hydrogen sulfide gas sensor, a control main board, a Bluetooth communication module and a power module, the humidity sensor, the hydrogen sulfide gas sensor, the Bluetooth communication module and the power module are electrically connected with the control main board, the data acquisition device is in Bluetooth communication connection with the intelligent terminal, and the intelligent terminal is used for receiving humidity data and hydrogen sulfide gas concentration data acquired by the data acquisition device, judging the current urine non-wetting state by utilizing a preset urination recognition algorithm and a defecation recognition algorithm, and prompting a user to replace the current urine non-wetting state in time when the current urine non-wetting state meets preset alarm conditions. The sensor part of the urine non-wetting state monitoring system independently forms a device, so that the sensor can be detached to be reused on different urine non-wetting states, and the cost of urine non-wetting monitoring is reduced.
Drawings
FIG. 1 is a schematic diagram showing the components of a urine non-wetting condition monitoring system according to the present invention.
Detailed Description
The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments described herein may be implemented in other sequences than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or apparatus.
Referring to fig. 1, a first aspect of the present invention provides a urine non-wetting status monitoring system, including a data collecting device and an intelligent terminal, when the data collecting device is used, the data collecting device needs to be adhered to a middle position of a urination point and a defecation point on the urine non-wetting, the data collecting device includes a temperature sensor 10, a humidity sensor 20, a hydrogen sulfide gas sensor 30, a control main board 40, a bluetooth communication module 50, a power module 60, a magnetic charging module 70, a control key 80 and an audible and visual alarm 90, the temperature sensor 10, the humidity sensor 20, the hydrogen sulfide gas sensor 30, the bluetooth communication module 50, the power module 60, the control key 80 and the audible and visual alarm 90 are all electrically connected with the control main board 40, the magnetic charging module 70 is electrically connected with the power module 60, the data collecting device is connected with the intelligent terminal through bluetooth communication, and the intelligent terminal is used for receiving humidity data collected by the data collecting device and the hydrogen sulfide gas concentration data and utilizing a preset urination recognition algorithm and a urination recognition algorithm to prompt a current non-wetting condition to replace the current user to replace the current non-wetting condition. In another case, the hydrogen sulfide gas sensor 30 may be a methane/ammonia/hydrogen sulfide three-in-one gas sensor, and the temperature sensor 10 and the humidity sensor 20 may be directly temperature and humidity integrated sensors available in the market.
The data acquisition device is powered on in a dormant state; waiting for key pressing and charging awakening; a short press key and a short press lengthening press for 3 seconds can start up to enter a main circulation program; the Bluetooth is not started when the charging is started and the wake-up is not started; only when the key is turned on, bluetooth is turned on; the main program is circulated with an on/off function, a connection/disconnection state, a dormancy/awakening function, a low electricity/charging indication function, a temperature and humidity/gas sensor data acquisition, a urine/feces detection algorithm and a mobile phone APP Bluetooth communication function, after the data acquisition device is started, the humidity sensor acquires 1 time of humidity data every 1 second, and the hydrogen sulfide gas sensor acquires 1 time of hydrogen sulfide gas concentration data every 16 seconds.
Starting: in the power-off state, the user presses the device for a short time, then starts the device for a long time by pressing the device for 3 seconds, and the blue indicator lights flash to enter a pairing/connecting state;
and (5) shutting down: in the starting state, the blue indicator lamp is turned off after being pressed for 3 seconds and turned off after being pressed for 3 times;
and (3) connection: after the mobile phone is started, if the last paired mobile phone Bluetooth is in an on state, the mobile phone is automatically connected, and the blue indicator lamp is extinguished after being connected successfully for 6 times; the red and blue indicator lights of connection failure flash alternately;
disconnection of: in the connection state, the Bluetooth connection is manually disconnected, the blue lamp is reverted to flash, the Bluetooth connection is not connected within 10 minutes, and the equipment enters dormancy;
dormancy: no action is automatically carried out to enter dormancy within 60 seconds after the power-on;
dormancy awakening: in the dormant state, the mobile phone is automatically connected with the mobile phone if the Bluetooth of the mobile phone paired last time is in an open state after the mobile phone is woken up by short-time pressing;
low electrical indication: when the battery voltage is lower than 30%, the red light flashes;
charging indication: during charging, the red indicator lamp is always on; after the charging is completed, the blue indicator lamp is always on;
communication with mobile phone APP Bluetooth: when not connected, the broadcast data contains the MAC address of the equipment, and when connected, the broadcast is closed; the electric quantity of the sending battery, the temperature and humidity, the urine and feces state and the feces state are circularly reported, and feedback of data is received; and receiving APP issuing information to prompt whether the diaper is replaced or not, and receiving the state of circularly uploading data when the diaper exceeds a warning value popup window.
In an alternative embodiment of the first aspect of the present invention, the urination recognition algorithm comprises: taking first humidity data acquired by the humidity sensor for the first time as a reference value; acquiring second humidity data of the current moment acquired by the humidity sensor, calculating a first difference value between the second humidity data and the first humidity data, and judging that urination does not occur if the first difference value is negative or if the first difference value is positive but the first difference value is smaller than a preset first threshold value; and if the first difference value is positive and the first difference value is larger than the first threshold value, judging that urination occurs. In this embodiment, the urination recognition algorithm judges urination based on the principle that the humidity value increases within a certain period of time after urination occurs, the first humidity data is the first measured humidity data when urination and defecation do not occur after urination is not performed on a human body, the second humidity data is the subsequent measured humidity data, and since in the actual process, the humidity data also has a fluctuation range when urination and defecation do not occur, whether the influence of the normal fluctuation range is required to be eliminated before urination is determined, the positive interval of the fluctuation range is the first threshold, urination is judged only when the humidity data collected later exceeds the normal range, and further judgment is required to be performed after urination is judged, because the current urine is not wet and is generally required to meet the requirement that the moisture absorption rate reaches a certain degree.
In an optional implementation manner of the first aspect of the present invention, if the first difference is positive and the first difference is greater than the first threshold, the determining that urination occurs includes:
comparing the first difference value with a second threshold value, and if the first difference value is larger than the second threshold value, judging that an alarm condition is met, and informing a user of timely replacing the diaper; if the first difference value is smaller than the second threshold value, judging that the alarm condition is not met, and entering secondary urination judgment.
In this embodiment, after determining that urination occurs, the intelligent terminal still needs to continuously determine whether the first difference reaches a condition that the diaper needs to be replaced, where the second threshold is obtained by subtracting the first humidity data acquired by the humidity sensor from the lowest humidity data required when the diaper meets the replacement condition, and when further determining that the first difference obtained by subtracting the first humidity data from the second humidity data is greater than the second threshold, the intelligent terminal indicates that the requirement of the replacement condition is met, so that the intelligent terminal only can notify the user of timely replacement, and the notification mode is to send an alarm instruction to the data acquisition device, an audible-visual alarm in the data acquisition device gives an alarm, and prompt the user that the diaper needs to be replaced on a display screen of the intelligent terminal.
In an optional implementation manner of the first aspect of the present invention, if the first difference value is smaller than the second threshold value, the determining that the alarm condition is not satisfied, and entering the secondary urination determination includes:
taking the second humidity data as a reference value, acquiring third humidity data of the next moment acquired by the humidity sensor, calculating a second difference value between the third humidity data and the second humidity data, and judging that urination does not occur if the second difference value is negative or if the second difference value is positive but the second difference value is smaller than a preset first threshold value; and if the second difference value is positive and the second difference value is larger than the first threshold value, judging that urination occurs. In this embodiment, if the urination occurs, but the humidity data of the urine does not meet the condition of replacement, the intelligent terminal will further perform the judgment of secondary urination, and since the cost of the data acquisition device will be too high if the data acquisition device stores all the acquired humidity data, the second humidity data of urination will be used as the condition of judgment when the data acquisition device acquires the secondary urination, and there will be a reasonable fluctuation range of the second humidity data when the data acquisition device acquires the secondary urination, and this range is generally considered to be the same as the fluctuation range of the first time and is also the first threshold.
In an optional implementation manner of the first aspect of the present invention, if the second difference is positive and the second difference is greater than the first threshold, the determining that urination occurs includes:
comparing the second difference value with a third threshold value, if the second difference value is larger than the third threshold value, judging that an alarm condition is met, and informing a user of timely replacing the diaper; if the second difference value is smaller than the third threshold value, judging that the alarm condition is not met, entering three urination judgment, and taking the third humidity data as a reference value in the three urination judgment. In this embodiment, since it is determined whether or not the reference data at the time of changing the diaper is required to be changed, the threshold value to be compared with the second difference value is also required to be changed, that is, the third threshold value obtained by subtracting the second humidity data from the humidity data which is the lowest required when the diaper satisfies the changing condition. Generally speaking, the moisture absorption rate requirement of the diaper to be replaced is met after two urination, so that the diaper is generally replaced after two urination is judged, and if the two urination does not meet the moisture absorption rate requirement, the intelligent terminal judges that the diaper is in third urination.
In another alternative embodiment of the invention, in order to increase the detection rate, two algorithms of abrupt change type and gradual rise type can be used for judging urine twice at most, and in order to increase the detection rate of urine twice, the judgment threshold value can be adjusted in real time according to the current humidity value. The values of the humiture s_thsensor.d_temperature and s_thsensor.d_humidities are updated 1 time every 1 second, and the value of the Humidity s_thsensor.d_humidities is updated every 3 seconds in the urine discrimination function. The urine detection function will determine the urine humidity stability value, i.e., o_differtopeevaluestable, that needs to be reached after urine has occurred each time with the current humidity value in-coming.
Then, the S_EDetect.S_Pee.F_PeeingKeep flag bit is used for judging whether the urine is in the urine state or the urine is detected, the urine is in the urine state when the urine is set to 1, and the urine is detected when the urine is cleared to 0.
Urine status:
storing the current humidity value to S_EDetect.S_Pee.S_Parm.D_CompareValueHumi as a urine humidity comparison value for the first time, subtracting the urine humidity comparison value from the current humidity value every time to obtain a urine humidity difference value S_EDetect.S_Pee.S_Parm.D_Difference MaxValueHumi, and comparing the urine humidity difference value with the urine humidity stability value: when the difference value of the urine humidity is smaller than the stable value of the urine humidity and the comparison is satisfied for 3 times, canceling the urine state in progress, namely, entering the detection of the urine state in progress next time and clearing the data S_EDetect.S_Pee.S_Parm needed to be used in the urine state.
When the difference value of the urine and urine humidity is not smaller than the urine and urine humidity stable value, the current humidity value is used as the update of the urine and urine humidity comparison value and the comparison is carried out again until the difference value of the urine and urine humidity is smaller than the urine and urine humidity stable value and the comparison is carried out for 3 times, and the condition is met, then the state of whether the urine and the urine is detected.
Detecting whether urine is present:
the current humidity value is stored for the first time to be S_EDetect.S_Pee.S_Parm.D_CompareValueHumi as a urine humidity comparison value, and each time the current humidity value is subtracted from the urine humidity comparison value, the current humidity value is divided into two algorithms of a mutation type and a gradual rising type:
mutation type: when the difference value of the two is directly larger than 5, judging that the urine confirms the urine times S_EDetect.S_Pee.N_PeeTimes at one time, adding 1 to 2 at most, and resetting the S_EDetect.S_Pee.F_PeeingKeep mark position 1, namely, entering a urine state next time and resetting the used data.
Gradually rising: when the difference value between the two is not more than 5, the current humidity value is used as the update of the urine humidity comparison value, the current humidity value is stored in a D_NowAgoValueHumi [ ] array in the last 6 times, the flag is set to 1 after the current humidity value is stored for 6 times, and when the flag is set to 1, the maximum urine humidity comparison value D_MaxCompareValueHumi is obtained by using different values of the minimum value in the D_NowAgoValueHumi [ ] array; and subtracting the last three element values from the first three element values in the D_NowAgoValueHumi [ ] array to obtain MinusValue, and comparing the MinusValue with the maximum urine humidity comparison value:
when the maximum urine humidity comparison value is smaller than MinusValue, judging that the number of times of urine confirmation of urine is S_EDetect.S_Pee.N_PeeTimes added with 1 to 2 at most, and the S_EDetect.S_Pee.F_PeeingKeep mark position 1 is the next time in a urine state and clearing the used data.
When the maximum urine humidity comparison value is not less than MinusValue, the last element value in the D_NowAgoValueHumi [ ] array is given to the previous one, the first one is truncated, the last element value is unchanged temporarily, and the current humidity value is updated to the last element D_NowAgoValueHumi of the D_NowAgoValueHumi [ ] array next time.
In an alternative embodiment of the first aspect of the present invention, the bowel movement identification algorithm comprises: taking first hydrogen sulfide concentration data acquired by the hydrogen sulfide gas sensor for the first time as a reference value; acquiring second hydrogen sulfide concentration data at the current moment acquired by the hydrogen sulfide gas sensor, calculating a third difference value between the second hydrogen sulfide concentration data and the first hydrogen sulfide concentration data, and judging that defecation does not occur if the third difference value is negative or positive but the third difference value is smaller than a preset fourth threshold value; and if the third difference value is positive and the third difference value is larger than the fourth threshold value, judging that defecation is suspected to occur. In this embodiment, the defecation is determined based on the hydrogen sulfide gas concentration data obtained by the hydrogen sulfide gas sensor, and in the process of determining, in the normal case, the first hydrogen sulfide concentration data will have a reasonable fluctuation interval, so it is determined whether the first hydrogen sulfide gas concentration data exceeds the normal fluctuation range before defecation occurs, this range is limited by the fourth threshold, and after the first hydrogen sulfide concentration data exceeds the normal fluctuation range, there is a problem that the concentration of the hydrogen sulfide data is affected by flatus, and in this case, misjudgment caused by flatus needs to be eliminated, so the third difference value obtained by subtracting the first hydrogen sulfide concentration data from the second hydrogen sulfide concentration data is larger than the fourth threshold, and further determination is only needed for suspected defecation.
In another optional implementation manner, the defecation recognition algorithm of the invention can collect the concentrations of methane, ammonia and hydrogen sulfide at the same time to judge whether defecation is performed, the concentration change of methane exceeds a fifth value, the concentration of ammonia exceeds a sixth value, the concentration of hydrogen sulfide exceeds a seventh value to judge defecation, and the defecation is judged by a plurality of factors, so that the defecation recognition accuracy is further improved.
In an optional implementation manner of the first aspect of the present invention, the determining that the feces are suspected to occur after the third difference is positive and the third difference is greater than the fourth threshold includes:
and acquiring a plurality of follow-up hydrogen sulfide concentration data in a period of time from the current moment acquired by the hydrogen sulfide gas sensor, judging that defecation does not occur if the concentration change trend of the follow-up hydrogen sulfide concentration data in a period of time from the current moment acquired by the follow-up hydrogen sulfide gas sensor is gradual decrease of the hydrogen sulfide concentration, and judging that defecation occurs if the concentration change trend of the follow-up hydrogen sulfide concentration data in a period of time from the current moment acquired by the hydrogen sulfide gas sensor is increase of the hydrogen sulfide concentration or the hydrogen sulfide concentration area is stable, and notifying a user of timely replacement of diaper. In this embodiment, the method for further judging whether defecation actually occurs is based on that if the flatus is generated, the concentration of hydrogen sulfide gas after the flatus is reduced.
In another alternative embodiment of the invention, the stool detection algorithm is based on the principle that the smell of the stool can increase the gas voltage value after the occurrence of the stool, and the stool detection algorithm is performed by introducing a stool mode and a heating state with a high gas value on the basis of interference of the increase of the gas voltage value caused by flatus resistance and high humidity resistance.
The discriminant function is started 1 second for 1 time, heating (note: heating is output to the corresponding IO port of the gas sensor) is performed for 1 second on 1 second off for 16 seconds, and the gas voltage value S_Gas.D_GasValue is updated once in 1 period.
Forced heating for 60 seconds occurs when the data is all cleared (i.e., D2 sent or powered off).
The current gas voltage value is collected after heating for 1 second, and then the gas is closed. The maximum gas voltage value S_EDetect.S_Shit.S_Parm.D_Difference MaxValueGas, the S_EDetect.S_Shit.S_Parm.D_HotGas, the gas zero voltage value S_EDetect.S_Shit.S_Parm.D_ZeroValueGas and the gas zero voltage value are determined by the values of S_EDetect.S_Shit.S_Parm.D_ZeroValueGas;
the collected gas voltage value is stored to a gas voltage comparison value S_EDetect.S_shit.S_Parm.D_CompareValueGas, and the gas voltage comparison value is required to be larger than 0.4V to enter a convenient fake mode next time, wherein the convenient fake mode is judged by judging whether the difference value of the collected gas voltage value is larger than a gas maximum voltage value when heating is started before and after 1 period, and when the difference value is larger than the gas maximum voltage value, the mode enters the convenient fake mode, namely S_EDetect.S_shit.F_Shidingfake is set to 1; the current humidity value is saved to a stool humidity comparison value s_edetect.s_shit.s_parm.d_compevaluehami.
In the off 16 seconds of 1 period, the current humidity value is subtracted from the stool humidity comparison value to obtain a stool maximum humidity difference value S_EDetect.S_shit.S_Parm.D_Difference MaxValueHumi, and when the stool maximum humidity difference value is greater than 3, the stool mode judgment is not performed.
Just like mode:
background: the feces and flatus can both cause the rise of the gas voltage value, but the feces and the flatus are in two different states, and the flatus cannot be misjudged as feces in the requirements.
The purpose is as follows: to distinguish between a custom mode of stool and flatus.
Conditions are as follows: the difference value of the gas voltage values acquired during heating before and after 1 period is larger than the maximum gas voltage value, and the gas voltage value enters a stool mode.
Principle of: when the feces and urine occur, the smell of the feces and urine remains in the diaper for a period of time, so that the gas voltage value of the feces and urine is basically unchanged; when flatus occurs, the smell will be released soon, so that the gas voltage will be reduced.
Algorithm: whether the gas voltage difference before and after 2 periods of the flush mode of the excrement is larger than-0.1 or not is judged to be true excrement, if yes, the excrement is judged to be once excrement; if not, it is considered that flatus is generated, and the judgment of feces is not performed.
Heating state of high gas value:
background: the high humidity condition causes the gas voltage value to gradually rise, and when the gas voltage value rises to approach saturation, the change of the odor concentration is difficult to cause the change of the gas voltage value, and then high humidity gas algorithm compensation needs to be introduced.
The purpose is as follows: in order to achieve the convenience determination even at high gas voltage values (i.e., high humidity).
Conditions are as follows: when the heating state of the high gas value is never entered and the difference between the current gas voltage value and the gas zero voltage value, that is, the S_EDetect.S_shit.S_Parm.D_HotGas is larger than the corresponding hot_value, 3 conditions that the forced heating is completed and the convenient fake mode does not occur are satisfied, the heating state of the high gas value is entered; since heating will greatly increase power consumption, a heating state of high gas value is allowed to be entered only once for consideration of power consumption, and cannot be entered again after one time unless the D2 character issued by APP is received or shutdown is entered (note: both states will clear all data about urination and defecation of 0).
Principle of: the gas voltage value is reduced by turning on the heating, and the reduced value in the two states of defecation and urination without defecation is different, and the defecation is more than the urination without defecation.
Algorithm: heating is started for 6 seconds, whether the voltage difference before and after the heating is larger than the corresponding hot_compare value or not, and if yes, the user considers that the user is just inconvenient; if not, it is considered that no occurrence is made.
In summary, the invention provides a urine non-wetting state monitoring system, which comprises a data acquisition device and an intelligent terminal, wherein the data acquisition device comprises a humidity sensor, a hydrogen sulfide gas sensor, a control main board, a Bluetooth communication module and a power module, the humidity sensor, the hydrogen sulfide gas sensor, the Bluetooth communication module and the power module are all electrically connected with the control main board, the data acquisition device is in Bluetooth communication connection with the intelligent terminal, and the intelligent terminal is used for receiving humidity data and hydrogen sulfide gas concentration data acquired by the data acquisition device, judging the current urine non-wetting state by utilizing a preset urination recognition algorithm and a defecation recognition algorithm, and prompting a user to timely replace the urine non-wetting state when the current urine non-wetting state meets preset alarm conditions. The sensor part of the urine non-wetting state monitoring system independently forms a device, so that the sensor can be detached for repeated use, thereby reducing the cost of the urine non-wetting state monitoring.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (4)
1. The system is characterized by comprising a data acquisition device and an intelligent terminal, wherein the data acquisition device comprises a humidity sensor, a hydrogen sulfide gas sensor, a control main board, a Bluetooth communication module and a power module, the humidity sensor, the hydrogen sulfide gas sensor, the Bluetooth communication module and the power module are electrically connected with the control main board, the data acquisition device is in Bluetooth communication connection with the intelligent terminal, and the intelligent terminal is used for receiving humidity data and hydrogen sulfide gas concentration data acquired by the data acquisition device, judging the current status of the diaper by utilizing a preset urination recognition algorithm and a defecation recognition algorithm, and prompting a user to replace the diaper in time when the current status of the diaper meets preset alarm conditions;
the urination recognition algorithm comprises;
determining a urine and urine humidity stable value which needs to be reached after urine and urine occur based on the current humidity value acquired by the humidity sensor;
judging whether the patient is in a urine state or not currently according to the value of the flag bit;
if the current humidity value is in a urine-in-urine state, storing the current humidity value as a urine-in-urine humidity comparison value, subtracting the current humidity value from the urine-in-urine humidity comparison value every time to obtain a urine-in-urine humidity difference value, and canceling the urine-in-urine state and entering into detection of the urine-in-urine state when the urine-in-urine humidity difference value is smaller than the urine-in-urine humidity stable value and the comparison is satisfied for 3 times;
if the current humidity value is in a urine and urine detecting state, storing the current humidity value as a urine and urine humidity comparison value, subtracting the current humidity value from the urine and urine humidity comparison value to obtain a urine and urine humidity difference value every next time, and dividing the urine and urine humidity difference value into two algorithms of a sudden type and a gradual rising type based on the size of the urine and urine humidity difference value;
for the mutant, when the urine-urine humidity difference is greater than 5, determining that urine is once;
for the gradual rising type, when the difference value of the urine and urine humidity is less than or equal to 5, storing the humidity value 6 times after the current humidity value into an array, determining a maximum urine and urine humidity comparison value by using the minimum value in the array, subtracting the last three elements from the first three elements in the array to obtain an element difference value, and judging urine once when the maximum urine and urine humidity comparison value is less than the element difference value;
when the maximum urine humidity comparison value is greater than or equal to the element difference value, the first element in the array is truncated, and the next current humidity value is updated to the array to be used as the last element.
2. The urine non-wetting condition monitoring system of claim 1, wherein the data acquisition device further comprises a temperature sensor electrically connected to the control motherboard.
3. The urine non-wetting condition monitoring system of claim 1, wherein the data acquisition device further comprises a magnetic charging module electrically connected to the power module.
4. The urine non-wetting condition monitoring system of claim 1, wherein the humidity sensor collects 1 humidity data every 1 second and the hydrogen sulfide gas sensor collects 1 hydrogen sulfide gas concentration data every 16 seconds.
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