CN111419519B - System and method for monitoring urine in urinary tract ostomy bag based on pressure sensor - Google Patents
System and method for monitoring urine in urinary tract ostomy bag based on pressure sensor Download PDFInfo
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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
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/44—Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Portable urination aids; Colostomy devices
- A61F5/445—Colostomy, ileostomy or urethrostomy devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/10—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration
- G01C21/12—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning
- G01C21/16—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F22/00—Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for
- G01F22/02—Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for involving measurement of pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/52—Weighing apparatus combined with other objects, e.g. furniture
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
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Abstract
The application discloses a urine monitoring system and method in a urinary tract ostomy bag based on a pressure sensor, wherein the urine monitoring system comprises a shell (1), a first pressure sensor (21), a second pressure sensor (22), a third pressure sensor (23), an MEMS sensor, a microcontroller and a terminal.
Description
Technical Field
The application relates to a urine monitoring system and method in a urinary tract ostomy bag based on a pressure sensor, and belongs to the technical field of medical appliances.
Background
Because a certain organ in the urinary tract is diseased, the urinary tract of a patient needs to be opened to the abdominal wall to form an stoma; the ostomy bag is used to hold urine produced by the patient via the stoma. Patients who have undergone ostomy operation need to wear the ostomy bag for life, the patients do not have autonomous perception on the process of urination of human bodies to the ostomy bag, the urination time and the urine volume stored in the ostomy bag cannot be known in real time, the urine in the ostomy bag overflows, abdomen or clothes are stained, and the normal life and work of the patients are plagued; or influence the secretion of urine in the urinary system of human body, and has adverse effect on the health of human body. This severely affects the normal work and quality of life of the patient.
Chinese patent 201520272583.3 discloses a patient's uniform convenient to ostomy patient, specifically discloses be equipped with gravity sensor, singlechip and the alarm that is used for detecting ostomy bag weight in the bottom of pocket, gravity sensor connects the singlechip, the alarm is connected to the singlechip, singlechip is according to the ostomy bag weight control alarm that gravity sensor detected, sends the weight signal that gravity sensor detected to bluetooth signal receiver through bluetooth signal transmitter, bluetooth signal receiver sends the signal of receipt to the treater, if ostomy bag's weight exceeds preset threshold value, the treater then controls switch circuit and opens to open the call switch and call medical personnel and in time change ostomy bag. Since the patent only provides a gravity sensor for detecting the weight of the ostomy bag at the bottom of the bag, the data detected by the gravity sensor will be seriously deviated (smaller) than the real data when the human body lies flat, and the practicability is greatly reduced.
The Chinese patent 201910155761.7 discloses an ostomy patient management system based on cloud and wearable technology, in particular a Bluetooth ostomy bag monitoring system, mobile terminal apps and remote cloud, wherein the Bluetooth ostomy monitoring system comprises a protective body, a main control chip module, a battery module, a storage chip, a data output module I, a data input module I and a low-power consumption Bluetooth module I are arranged in the protective body, the Bluetooth ostomy bag monitoring system comprises a monitoring main body, a data input module II, a data output module II and a bending sensor signal processing module which are respectively connected with the main control chip module are arranged in the monitoring main body, the main control chip module is respectively connected with the low-power consumption Bluetooth module II and the bending sensor, and the remote cloud comprises a user login module, a data storage and display module and a big data analysis module; the novel digital technology improves the disease management and monitoring capability, and is convenient for medical staff and patients to carry out omnibearing monitoring record on the stoma and the ostomy bag. Because it adopts the crooked sensor to measure the urine volume, its principle is that the resistance of crooked sensor 15 can change along with the crooked of sensor, because its crooked is too macroscopic, it can not be real-time accurate measure the urine volume, and to the patient, can know real-time urine volume, and is very important, makes it can drink water according to the urine volume.
Disclosure of Invention
The application aims to: in order to overcome the defects in the prior art, the application provides a urine monitoring system and a urine monitoring method in a urostomy bag based on a pressure sensor, which can quantitatively monitor the urine output (volume or quality) of a patient wearing the urostomy bag, the urine output time and the urine output times in real time, and transmit corresponding data to terminals such as a mobile phone to inform a user so as to facilitate timely treatment of the patient wearing the urostomy bag.
The technical scheme is as follows: in order to achieve the above purpose, the application adopts the following technical scheme:
a urine monitoring system in a urinary tract ostomy bag based on a pressure sensor comprises a shell, a first pressure sensor, a second pressure sensor, a third pressure sensor, an MEMS sensor, a microcontroller and a terminal, wherein:
the shell is used for placing the ostomy bag and comprises a left side face, a lower bottom face, a right side face and an upper top face, and the left side face, the lower bottom face, the right side face and the upper top face are connected with each other to form the shell.
The first pressure sensor is arranged on the inner wall of the left side face, the second pressure sensor is arranged on the inner wall of the lower bottom face, and the third pressure sensor is arranged on the inner wall of the right side face.
And the MEMS sensor and the microcontroller are arranged on the shell, and the first pressure sensor, the second pressure sensor, the third pressure sensor, the MEMS sensor and the terminal are connected with the microcontroller.
The first pressure sensor is used for detecting first pressure information of urine in the ostomy bag on the left side face of the shell and uploading the first pressure information to the microcontroller.
The second pressure sensor is used for detecting second pressure information of urine in the ostomy bag on the lower bottom surface of the shell and uploading the second pressure information to the microcontroller.
The pressure sensor III is used for detecting pressure information III of urine in the ostomy bag on the right side face of the shell and uploading the pressure information III to the microcontroller.
The MEMS sensor is used for detecting the gesture of the shell to obtain current gesture information.
And the microcontroller obtains the urine volume in the ostomy bag according to the first pressure information, the second pressure information, the third pressure information and the current posture information. Comparing the obtained urine quantity with a preset urine threshold value, and sending out an alarm signal when the obtained urine quantity is higher than the urine threshold value.
And the alarm module of the terminal carries out alarm reminding according to the alarm signal.
Preferably: the pressure sensor comprises a first pressure sensor, a second pressure sensor and a third pressure sensor, and is characterized by further comprising a signal conditioning circuit, wherein the signal conditioning circuit is used for conditioning pressure signals acquired by the first pressure sensor, the second pressure sensor and the third pressure sensor and sending the conditioned pressure signals to the microcontroller.
Preferably: the signal conditioning circuit comprises a first resistor, a first operational amplifier, a second resistor, a second operational amplifier, a third resistor and a third first operational amplifier, wherein the first pressure sensor is connected with the first resistor in series and then is connected with the signal input end of the first operational amplifier, and the signal output end of the first operational amplifier is connected with the microcontroller. The second pressure sensor is connected with the second resistor in series and then connected with the signal input end of the second operational amplifier, and the signal output end of the second operational amplifier is connected with the microcontroller. The third pressure sensor is connected with the third resistor in series and then is connected with the signal input end of the third first operational amplifier, and the signal output end of the third first operational amplifier is connected with the microcontroller.
Preferably: the signal conditioning circuit comprises a first constant current source, a second operational amplifier, a second constant current source, a second operational amplifier, a third constant current source and a third second operational amplifier, wherein the first pressure sensor is connected with the first constant current source in series and then is connected with the signal input end of the first operational amplifier, and the signal output end of the first operational amplifier is connected with the microcontroller. The second pressure sensor is connected with the second constant current source in series and then is connected with the signal input end of the second operational amplifier, and the signal output end of the second operational amplifier is connected with the microcontroller. The third pressure sensor is connected with the third constant current source in series and then is connected with the signal input end of the third second operational amplifier, and the signal output end of the third second operational amplifier is connected with the microcontroller.
Preferably: the terminal is provided with an input module and a drinking water calculating module, the input module is used for inputting drinking water time and drinking water quantity, the drinking water calculating module obtains supplementary drinking water quantity and supplementary drinking water time according to the input drinking water time and drinking water quantity, the supplementary drinking water quantity and the supplementary drinking water time are displayed through a display module, and meanwhile the alarm module alarms and reminds according to the supplementary drinking water time.
Preferably: the microcontroller uploads the detected urine volume to the terminal in real time, and the terminal displays the urine volume through the display module according to the uploaded urine volume.
Preferably: the intelligent terminal comprises a wireless transceiver, and the microcontroller is in communication connection with the intelligent terminal through the wireless transceiver.
Preferably: the right side face is provided with an ostomy bag chassis connecting through hole, and the first pressure sensor and the third pressure sensor are all positioned below the ostomy bag chassis connecting through hole.
A monitoring method employing a pressure sensor-based urine monitoring system in a urinary ostomy bag, comprising the steps of:
step 1, placing the ostomy bag in the housing, connecting the ostomy base plate, and then fixing the housing on the patient.
And 2, the microcontroller sends start detection signals to the first pressure sensor, the second pressure sensor, the third pressure sensor and the MEMS sensor at intervals, the first pressure sensor, the second pressure sensor and the third pressure sensor measure the pressure information at the moment according to the start detection signals to respectively obtain first pressure information, second pressure information and third pressure information, and the first pressure information, the second pressure information and the third pressure information are respectively uploaded to the microcontroller. And the MEMS sensor detects the current gesture information of the shell at the moment according to the starting detection signal and uploads the obtained current gesture information to the microcontroller.
And 3, matching corresponding measurement curves and equivalent data conversion methods by the microcontroller according to the first pressure information, the second pressure information, the third pressure information and the current posture information to obtain the urine volume in the ostomy bag. Comparing the obtained urine quantity with a preset urine threshold value, and sending out an alarm signal when the obtained urine quantity is higher than the urine threshold value.
And 4, the alarm module of the terminal carries out alarm reminding according to the alarm signal.
Preferably: the drinking time and the drinking water amount are input through the input module, the drinking water calculating module obtains the supplementary drinking water amount and the supplementary drinking water time according to the input drinking water time and drinking water amount, the supplementary drinking water amount and the supplementary drinking water time are displayed through the display module, and meanwhile the alarm module alarms and reminds according to the supplementary drinking water time.
Compared with the prior art, the application has the following beneficial effects:
1. according to the application, the first pressure sensor, the second pressure sensor and the third pressure sensor respectively obtain the first pressure information, the second pressure information and the third pressure information, the current posture information obtained by the MEMS sensor is used for obtaining the urine volume in the ostomy bag according to the first pressure information, the second pressure information, the third pressure information and the current posture information, so that the obtained urine volume is accurate.
2. The application can monitor the urine quantity in the ostomy bag in real time, remind a patient to timely discharge and other treatments when the ostomy bag is full, prevent the urine from polluting the abdomen or clothes, and avoid adverse effects on the health due to the full ostomy bag.
3. The application can record the urination amount, the urination time and the urination times of the patient, so that the physical state of the patient can be correspondingly analyzed, for example, the water intake and the water drinking times are increased.
4. The application adopts wireless communication technology, which is beneficial to wearing and battery endurance.
Drawings
FIG. 1 is a composition diagram of the present application;
fig. 2 is a schematic view of the structure of an ostomy bag, wherein fig. 2 (a) is a front view of the ostomy bag and fig. 2 (b) is a left side view of the ostomy bag;
FIG. 3 is a schematic illustration of the use of the present application;
FIG. 4 is a schematic diagram of the resistor divider;
FIG. 5 is a circuit schematic of a constant current source;
FIG. 6 is a schematic diagram of the structure of the present application;
FIG. 7 is a graph of pressure versus urine volume for different postures.
Detailed Description
The present application is further illustrated in the accompanying drawings and detailed description which are to be understood as being merely illustrative of the application and not limiting of its scope, and various equivalent modifications to the application will fall within the scope of the application as defined in the appended claims after reading the application.
In the description of the present application, it should be noted that the positional or positional relationship indicated by the terms such as "vertical", "upper", "lower", "horizontal", "left", "right", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application.
In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
A urine monitoring system in a urostomy bag based on a pressure sensor, as shown in fig. 1, comprises a shell 1, a first pressure sensor 21, a second pressure sensor 22, a third pressure sensor 23, a MEMS sensor, a microcontroller and a terminal, wherein:
as shown in fig. 2, the ostomy bag 3 is provided with a ostomy bag chassis 4, urine 5 is stored in the ostomy bag, as shown in fig. 6, the shell 1 is used for placing the ostomy bag 3, the shell can be made of hard materials or flexible materials, and the capacitance sensor is attached to the ostomy bag as much as possible, the shell 1 comprises a left side surface 11, a lower bottom surface 12, a right side surface 13 and an upper top surface 14, and the left side surface 11, the lower bottom surface 12, the right side surface 13 and the upper top surface 14 are mutually connected to form the shell 1.
The first pressure sensor 21 is arranged on the inner wall of the left side surface 11, the second pressure sensor 22 is arranged on the inner wall of the lower bottom surface 12, and the third pressure sensor 23 is arranged on the inner wall of the right side surface 13. The first 21, second 22 and third 23 pressure sensors are pressure membrane sensors, which are placed in the ostomy bag 3 through the housing 1, respectively on the lower, left and right side of the ostomy bag 3 as shown in the figures. When a person stands or sits, the pressure sensor II 22 at the lower side can detect the pressure of urine between the shells; when the person is lying down, the pressure sensor one 21, the pressure sensor three 23 on the right or left can detect the pressure between the urine in the ostomy bag and the outer shell.
The right side surface 13 is provided with an ostomy bag chassis connecting through hole 131, and the first pressure sensor 21 and the third pressure sensor 23 are positioned below the ostomy bag chassis connecting through hole 131.
The electrode plane of the pressure film sensor can be arranged on one side close to the abdomen of the human body or on one side far away from the abdomen; the measuring electrode is attached to the surface of the ostomy bag. The present system is installed without having to destroy or modify the existing structure of the ostomy bag.
The MEMS sensor and the microcontroller are arranged on the shell 1, and the first pressure sensor 21, the second pressure sensor 22, the third pressure sensor 23, the MEMS sensor and the terminal are connected with the microcontroller.
The first pressure sensor 21 is used to detect the first pressure information of urine in the ostomy bag against the left side 11 of the housing 1 and to upload the first pressure information to the micro-controller.
The second pressure sensor 22 is used for detecting the second pressure information of urine in the ostomy bag to the lower bottom surface 12 of the housing 1 and uploading the second pressure information to the microcontroller.
The pressure sensor three 23 is used to detect the pressure information three of the urine in the ostomy bag against the right side 13 of the housing 1 and to upload the pressure information three to the microcontroller.
The MEMS sensor is used for detecting the gesture of the shell 1 to obtain current gesture information. The principle is that an accelerometer and a gyroscope of a micro-electromechanical system (MEMS) are utilized to detect the postures of a human body and an ostomy bag, and the specific posture calculation is that a conventional angular accelerometer is integrated into angular velocity, the angular velocity is further integrated into angular displacement, and then the current posture is calculated according to an initial position.
And the microcontroller obtains the urine volume in the ostomy bag according to the first pressure information, the second pressure information, the third pressure information and the current posture information. Comparing the obtained urine quantity with a preset urine threshold value, and sending out an alarm signal when the obtained urine quantity is higher than the urine threshold value.
The alarm module of the terminal carries out alarm reminding according to the alarm signal; the terminal of the application is a broad concept and comprises a prompt component such as a vibration component and a light emitting device on a shell so as to remind a patient without using an intelligent terminal such as a mobile phone.
The overall installation is shown in figure 3, the ostomy bag being installed in the abdomen of the person together with the present monitoring system.
The resistance value of the pressure film sensor changes after the pressure film sensor is stressed, so that a corresponding signal conditioning circuit can be designed; the signal conditioning circuit is used for conditioning pressure signals acquired by the first pressure sensor 21, the second pressure sensor 22 and the third pressure sensor 23 and sending the conditioned pressure signals to the microcontroller.
The voltage can be processed correspondingly by using an operational amplifier in the form of resistor voltage division, the voltage output by the operational amplifier is related to the pressure, and the operational amplifier has good linearity in a certain interval, as shown in fig. 4: the signal conditioning circuit comprises a first resistor, a first operational amplifier, a second resistor, a first operational amplifier, a third resistor and a first operational amplifier, wherein the first pressure sensor 21 is connected with the first resistor in series and then is connected with the signal input end of the first operational amplifier, and the signal output end of the first operational amplifier is connected with the microcontroller. The second pressure sensor 22 is connected with the second resistor in series and then connected with the signal input end of the second operational amplifier, and the signal output end of the second operational amplifier is connected with the microcontroller. The third pressure sensor 23 is connected with the third resistor in series and then is connected with the signal input end of the third first operational amplifier, and the signal output end of the third first operational amplifier is connected with the microcontroller.
A constant current source circuit can be used, and corresponding pressure values can be obtained by measuring the voltages at two ends of the pressure sensor, as shown in fig. 5: the signal conditioning circuit comprises a first constant current source, a second operational amplifier, a second constant current source, a second operational amplifier, a third constant current source and a third second operational amplifier, wherein the first pressure sensor 21 is connected with the first constant current source in series and then is connected with the signal input end of the first operational amplifier, and the signal output end of the first operational amplifier is connected with the microcontroller. The second pressure sensor 22 is connected with the second constant current source in series and then is connected with the signal input end of the second operational amplifier, and the signal output end of the second operational amplifier is connected with the microcontroller. The third pressure sensor 23 is connected with the third constant current source in series and then is connected with the signal input end of the third second operational amplifier, and the signal output end of the third second operational amplifier is connected with the microcontroller.
The terminal is provided with an input module and a drinking water calculating module, the input module is used for inputting drinking water time and drinking water quantity, the drinking water calculating module obtains supplementary drinking water quantity and supplementary drinking water time according to the input drinking water time and drinking water quantity, the supplementary drinking water quantity and the supplementary drinking water time are displayed through a display module, and meanwhile the alarm module alarms and reminds according to the supplementary drinking water time.
The microcontroller uploads the detected urine volume to the terminal in real time, and the terminal displays the urine volume through the display module according to the uploaded urine volume.
The intelligent terminal also comprises a wireless transceiver, and the microcontroller is in communication connection with the intelligent terminal through the wireless transceiver. The wireless transceiver of the application communicates with terminals such as mobile phones and the like by utilizing Bluetooth and low-power Bluetooth technology, and transmits information such as urine volume and the like to intelligent terminals such as mobile phones and the like. The terminal App or WeChat applet such as the mobile phone can count, display and store the urination time, the urination amount each time, the urination times and the daily urination total amount of the patient. When a certain threshold value is reached (the threshold value can be set according to the situation), the terminal App or the WeChat applet such as a mobile phone can remind the patient to timely treat urine. The terminal App or WeChat applet of the mobile phone has the function of manually inputting the drinking time and the drinking amount. And according to historical data analysis, the terminal App or WeChat applet of the mobile phone and the like reminds the patient of supplementing drinking amount and drinking time.
A monitoring method employing a pressure sensor-based urine monitoring system in a urinary ostomy bag, comprising the steps of:
step 1, as shown in fig. 2 and 3, an ostomy bag 3 is placed in the housing 1, the ostomy base plate 4 is connected, and the housing 1 is then fixed to the patient.
And 2, the microcontroller sends start detection signals to the first pressure sensor 21, the second pressure sensor 22, the third pressure sensor 23 and the MEMS sensor at intervals, so that the first pressure sensor 21, the second pressure sensor 22, the third pressure sensor 23 and the MEMS sensor can detect relevant information in real time by setting monitoring time, and further realize real-time monitoring, and the first pressure sensor 21, the second pressure sensor 22 and the third pressure sensor 23 respectively obtain first pressure information, second pressure information and third pressure information according to the pressure information at the moment measured by the start detection signals, and respectively upload the first pressure information, the second pressure information and the third pressure information to the microcontroller. The MEMS sensor detects the current posture information of the shell 1 at the moment according to the starting detection signal, and uploads the obtained current posture information to the microcontroller.
And 3, matching corresponding measurement curves and equivalent data conversion methods by the microcontroller according to the first pressure information, the second pressure information, the third pressure information and the current posture information to obtain the urine volume in the ostomy bag. Comparing the obtained urine quantity with a preset urine threshold value, and sending out an alarm signal when the obtained urine quantity is higher than the urine threshold value.
As shown in fig. 7, a fitting curve of pressure and urine volume under various postures is first established, the second pressure information of the second pressure sensor 22 is selected for measurement under the vertical state of the shell (ostomy bag), and the second pressure information corresponding to the different urine volume of the ostomy bag is measured to obtain a fitting curve of pressure and urine volume under the vertical state. And in a flat state of the shell (the ostomy bag), measuring the pressure information I of the first pressure sensor 21 or the pressure information III of the third pressure sensor 23, and measuring different urine amounts of the ostomy bag and the corresponding pressure information I or pressure information III thereof to obtain a fitting curve of the pressure and the urine amount in the flat state. Different inclinations are taken from the vertical state to the horizontal state, as shown in fig. 6, the inclination is deviated to the right to be positive, the inclination is deviated to the left to be negative, the first pressure information of the first pressure sensor 21 is selected to measure in various inclination states of the negative direction, different urine amounts of the ostomy bag and the first pressure information corresponding to the first pressure information are measured, a fitting curve of the pressure and the urine amounts in the different inclination states of the negative direction is obtained, the third pressure information of the third pressure sensor 23 is selected to measure in various inclination states of the positive direction, the different urine amounts of the ostomy bag and the corresponding third pressure information are measured, a fitting curve of the pressure and the urine amounts in the different inclination states of the positive direction is obtained, wherein the inclination angle of the ostomy bag is regarded as 90 degrees in the vertical state, the inclination angle of the ostomy bag is regarded as 0 degree in the horizontal state, and the inclination angle of the ostomy bag in other states is between 0 and 90 degrees.
In a simple manner, when the current posture information detected by the MEMS sensor is in a vertical state, namely, when the inclination angle is 90 degrees, the patient is considered to be in a vertical posture of an ostomy bag such as standing, sitting and the like, the pressure information II of the pressure sensor II 22 is selected, and the urine volume is calculated according to a fitting curve of the pressure and the urine volume in the vertical state; when the current posture information detected by the MEMS sensor is in a flat state, namely, when the inclination angle is 0 degree, the posture of the patient lying flat on the ostomy bag is considered to be detected, the corresponding pressure information one of the pressure sensors 21 or the corresponding pressure information three of the pressure sensors three 23 are selected, and the urine volume is calculated according to a fitting curve of the pressure and the urine volume in the flat state.
Further, a plurality of states: when the current posture information detected by the MEMS sensor is in other states, namely, the inclination angle direction is in a positive direction or a negative direction, and the inclination angle is between 0 and 90 degrees, if the inclination angle direction is in the positive direction, the pressure information III of the pressure sensor III 23 is selected, and if the inclination angle direction is in the negative direction, the pressure information I of the pressure sensor I21 is selected, and then a fitting curve of the corresponding pressure and the urine volume is selected according to the inclination angle to calculate the urine volume.
In addition, in order to improve the precision, in a plurality of state cases, namely when the inclination angle is not 0 or 90 degrees, pressure information II of the pressure sensor II 22 is selected, and the urine volume I is calculated according to a fitting curve of the pressure and the urine volume in the vertical state; selecting pressure information I of a pressure sensor I21, and calculating urine volume II according to fitting curves of pressure and urine volume in different inclination angles of the negative direction; selecting pressure information III of a pressure sensor III 23, and calculating the urine volume III according to fitting curves of the pressure and the urine volume in different inclination angles in the positive direction; the true value of the urine volume is estimated according to the urine volume I, the urine volume II and the urine volume III, and the estimation method can be that the calculated average value or the weighted average value (the weight can be converted by the attitude information) is taken, so that the estimation precision of the urine volume is improved.
And 4, the alarm module of the terminal carries out alarm reminding according to the alarm signal.
The drinking time and the drinking water amount are input through the input module, the drinking water calculating module obtains the supplementary drinking water amount and the supplementary drinking water time according to the input drinking water time and drinking water amount, the supplementary drinking water amount and the supplementary drinking water time are displayed through the display module, and meanwhile the alarm module alarms and reminds according to the supplementary drinking water time. Firstly, modeling according to urination volume, exercise quantity, seasons and climate factors to obtain standard water intake, then obtaining the already drunk water intake according to the detected urination volume and the MEMS detected exercise quantity and by combining corresponding seasons and climate information, and carrying out corresponding prompt if the already drunk water intake is obviously too much or too much less than the standard water intake.
In addition, the application can detect the urine volume in the ostomy bag in real time, and remind a user to timely treat or discharge the urine in the ostomy bag when the urine is full. Patient urination data (urination time, volume and number of urination each time and total daily urination) are recorded for patient and doctor to make corresponding analysis and diagnosis. The application can monitor the urine quantity in the ostomy bag in real time, remind a patient to discharge in time when the ostomy bag is full, prevent the urine from polluting the abdomen or clothes, and avoid adverse effect on the health due to the fullness of the ostomy bag. The urination amount of the patient, the urination time and the urination times can also be recorded, so that the physical state of the patient can be correspondingly analyzed, for example, the water intake amount and the water intake times can be increased. Therefore, the application can monitor the urine volume in the ostomy bag, the urination time of the patient, the urination volume and the urination times and warn under certain conditions, and can monitor the urination behavior of the patient in the urostomy operation and the urine volume in the ostomy bag in real time and inform the user.
The foregoing is only a preferred embodiment of the application, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present application, and such modifications and adaptations are intended to be comprehended within the scope of the application.
Claims (10)
1. A urine monitoring system in a urinary tract ostomy bag based on a pressure sensor, which is characterized in that the urine monitoring system comprises a pressure sensor and a urine monitoring system body; the device comprises a shell (1), a first pressure sensor (21), a second pressure sensor (22), a third pressure sensor (23), an MEMS sensor, a microcontroller and a terminal, wherein:
the shell (1) is used for placing an ostomy bag, the shell (1) comprises a left side face (11), a lower bottom face (12), a right side face (13) and an upper top face (14), and the left side face (11), the lower bottom face (12), the right side face (13) and the upper top face (14) are connected with each other to form the shell (1);
the first pressure sensor (21) is arranged on the inner wall of the left side surface (11), the second pressure sensor (22) is arranged on the inner wall of the lower bottom surface (12), and the third pressure sensor (23) is arranged on the inner wall of the right side surface (13);
the MEMS sensor and the microcontroller are both arranged on the shell (1), and the first pressure sensor (21), the second pressure sensor (22), the third pressure sensor (23), the MEMS sensor and the terminal are all connected with the microcontroller;
the first pressure sensor (21) is used for detecting first pressure information of urine in the ostomy bag on the left side surface (11) of the shell (1) and uploading the first pressure information to the microcontroller;
the second pressure sensor (22) is used for detecting second pressure information of urine in the ostomy bag on the lower bottom surface (12) of the shell (1) and uploading the second pressure information to the microcontroller;
the pressure sensor III (23) is used for detecting pressure information III of urine in the ostomy bag on the right side face (13) of the shell (1) and uploading the pressure information III to the microcontroller;
the MEMS sensor is used for detecting the gesture of the shell (1) to obtain current gesture information;
the microcontroller obtains the urine volume in the ostomy bag according to the first pressure information, the second pressure information, the third pressure information and the current posture information; comparing the obtained urine volume with a preset urine threshold, and sending out an alarm signal when the obtained urine volume is higher than the urine threshold;
and the alarm module of the terminal carries out alarm reminding according to the alarm signal.
2. The pressure sensor-based urine monitoring system in a urostomy bag according to claim 1, wherein: the pressure sensor comprises a first pressure sensor (21), a second pressure sensor (22) and a third pressure sensor (23), and is characterized by further comprising a signal conditioning circuit, wherein the signal conditioning circuit is used for conditioning pressure signals acquired by the first pressure sensor, the second pressure sensor and the third pressure sensor and sending the conditioned pressure signals to the microcontroller.
3. The pressure sensor-based urine monitoring system in a urostomy bag according to claim 2, wherein: the signal conditioning circuit comprises a first resistor, a first operational amplifier, a second resistor, a second operational amplifier, a third resistor and a third first operational amplifier, wherein the first pressure sensor (21) is connected with the first resistor in series and then is connected with the signal input end of the first operational amplifier, and the signal output end of the first operational amplifier is connected with the microcontroller; the second pressure sensor (22) is connected with the second resistor in series and then connected with the signal input end of the second operational amplifier, and the signal output end of the second operational amplifier is connected with the microcontroller; the third pressure sensor (23) is connected with the third resistor in series and then is connected with the signal input end of the third first operational amplifier, and the signal output end of the third first operational amplifier is connected with the microcontroller.
4. A pressure sensor-based urine monitoring system in a urostomy bag according to claim 3, wherein: the signal conditioning circuit comprises a first constant current source, a second operational amplifier, a second constant current source, a second operational amplifier, a third constant current source and a third second operational amplifier, wherein the first pressure sensor (21) is connected with the first constant current source in series and then is connected with the signal input end of the first operational amplifier, and the signal output end of the first operational amplifier is connected with the microcontroller; the second pressure sensor (22) is connected with the second constant current source in series and then is connected with the signal input end of the second operational amplifier, and the signal output end of the second operational amplifier is connected with the microcontroller; the third pressure sensor (23) is connected with the third constant current source in series and then is connected with the signal input end of the third second operational amplifier, and the signal output end of the third second operational amplifier is connected with the microcontroller.
5. The pressure sensor-based urine monitoring system in a urostomy bag according to claim 1, wherein: the terminal is provided with an input module and a drinking water calculating module, the input module is used for inputting drinking water time and drinking water quantity, the drinking water calculating module obtains supplementary drinking water quantity and supplementary drinking water time according to the input drinking water time and drinking water quantity, the supplementary drinking water quantity and the supplementary drinking water time are displayed through a display module, and meanwhile the alarm module alarms and reminds according to the supplementary drinking water time.
6. The pressure sensor-based urine monitoring system in a urostomy bag according to claim 1, wherein: the microcontroller uploads the detected urine volume to the terminal in real time, and the terminal displays the urine volume through the display module according to the uploaded urine volume.
7. The pressure sensor-based urine monitoring system in a urostomy bag according to claim 1, wherein: the intelligent terminal comprises a wireless transceiver, and the microcontroller is in communication connection with the intelligent terminal through the wireless transceiver.
8. The pressure sensor-based urine monitoring system in a urostomy bag according to claim 1, wherein: the right side face (13) is provided with an ostomy bag chassis connection through hole (131), and the first pressure sensor (21) and the third pressure sensor (23) are both positioned below the ostomy bag chassis connection through hole (131).
9. A monitoring method using the pressure sensor-based urine monitoring system in a urostomy bag according to any one of claims 1 to 8, characterized by comprising the steps of:
step 1, placing an ostomy bag in a shell (1), communicating an ostomy chassis, and then fixing the shell (1) on a patient;
step 2, the microcontroller sends start detection signals to the first pressure sensor (21), the second pressure sensor (22), the third pressure sensor (23) and the MEMS sensor at intervals, and the first pressure sensor (21), the second pressure sensor (22) and the third pressure sensor (23) respectively obtain first pressure information, second pressure information and third pressure information according to the pressure information at the moment measured by the start detection signals, and the first pressure information, the second pressure information and the third pressure information are respectively uploaded to the microcontroller; the MEMS sensor detects current posture information of the shell (1) at the moment according to the starting detection signal, and uploads the obtained current posture information to the microcontroller;
step 3, the microcontroller matches corresponding measurement curves and equivalent data conversion methods according to the first pressure information, the second pressure information, the third pressure information and the current posture information to obtain the urine volume in the ostomy bag; comparing the obtained urine volume with a preset urine threshold, and sending out an alarm signal when the obtained urine volume is higher than the urine threshold;
and 4, the alarm module of the terminal carries out alarm reminding according to the alarm signal.
10. The method of monitoring according to claim 9, wherein: the drinking time and the drinking water amount are input through the input module, the drinking water calculating module obtains the supplementary drinking water amount and the supplementary drinking water time according to the input drinking water time and drinking water amount, the supplementary drinking water amount and the supplementary drinking water time are displayed through the display module, and meanwhile the alarm module alarms and reminds according to the supplementary drinking water time.
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