CN103932720A - Method and system for measuring urine volume and urine flow rate - Google Patents
Method and system for measuring urine volume and urine flow rate Download PDFInfo
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- CN103932720A CN103932720A CN201410195627.7A CN201410195627A CN103932720A CN 103932720 A CN103932720 A CN 103932720A CN 201410195627 A CN201410195627 A CN 201410195627A CN 103932720 A CN103932720 A CN 103932720A
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- urine
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- 210000002700 urine Anatomy 0.000 title claims abstract description 115
- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000005484 gravity Effects 0.000 claims abstract description 30
- 238000001914 filtration Methods 0.000 claims abstract description 15
- 230000002485 urinary effect Effects 0.000 claims description 23
- 238000012937 correction Methods 0.000 claims description 3
- 239000000284 extract Substances 0.000 claims description 3
- 238000002203 pretreatment Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 13
- 238000002474 experimental method Methods 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000007781 pre-processing Methods 0.000 abstract 1
- 238000013461 design Methods 0.000 description 4
- 230000003907 kidney function Effects 0.000 description 4
- 238000007599 discharging Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000027939 micturition Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 241000521257 Hydrops Species 0.000 description 1
- 206010030113 Oedema Diseases 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 208000017169 kidney disease Diseases 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
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- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
Abstract
The invention relates to a method and system for measuring the urine volume and the urine flow rate. The method comprises the steps of collection, preprocessing, filtering, conversion and display. The system for measuring the urine volume and the urine flow rate comprises a scale and a urine collection bag placed on the scale, the urine collection bag is provided with a urine inlet pipe for collecting urine, the scale is supported through more than two weight sensors, a specific gravity sensor is in series connection with the urine inlet pipe, and a computer and a display are connected with the weight sensors and the specific gravity sensor. Due to the fact that the method and the system are adopted, measurement accuracy is greatly improved by means of urine specific gravity data in the urine volume and urine flow rate calculation process, and experiments show that the accuracy can reach 0.5%.
Description
Technical field
The present invention relates to medical measuring method and the measuring system according to the method, specifically, relate to a kind of urine amount and urinary flow rate measuring method and measuring system.
Background technology
Urine amount, refers to the volume of urine of discharging in patient's unit interval, is generally used for the long-time interior situation of urinating of monitoring and measuring (hereinafter to be referred as measuring) patient.
Urine flow rate, also refers to the volume of urine of discharging in patient's unit interval, is generally used for measuring the situation of urinating in patient's short time.
Specific gravity of urine, refers to the ratio of 4 degrees Celsius of lower urines and the weight of consubstantiality hydrops, is the index of contained solute concentration in urine.
In clinical medicine and operation, the urine amount to patient and urine flow rate carry out measuring in real time online very necessary, because the parameter of patient's urine amount and urine flow rate can reflect patient's renal function, thereby make doctor can determine the disease relevant with renal function and cause effect relation thereof.
Prior art only has the short time measurement to urine amount, as the urine measurement amount of 20 minutes, conventionally adopts steelyard weight method, the general maximum measurements that are no more than 1 hour of steelyard weight method, due to its hanging structure difficult design, structure is stable not, affects the accuracy of measurement result.
And adopt photoelectric method can realize the long-time measurement to urine amount, and as the on-line measurement of 24 hours, but originally there is the defect that error is larger in photoelectric method, and its precision can only reach 1%, and the precision of measuring does not reach the desired precision of medical diagnosis.
In addition, existing urine amount and urinary flow rate measuring method and system cannot be carried out online measurement in real time, particularly continuous measurement for a long time, such as on-line measurement in 24 hours.
Finally, prior art does not utilize specific gravity of urine parameter to carry out urine amount and urine flow rate is measured, and this does not carry out on-line measurement to specific gravity of urine because of existing measuring method, can only adopt manually specific gravity of urine being measured of off-line.
Summary of the invention
Main purpose of the present invention is to provide a kind of urine amount and urinary flow rate measuring method that can be more accurate, online;
Another object of the present invention is to provide a kind of urine amount and urinary flow rate measuring system that can be more accurate, online.
For realizing main purpose of the present invention, urine amount provided by the invention and urinary flow rate measuring method comprise the steps:
Gather: send the specific gravity of urine data of the urine amount data from more than 2 weight sensor and 1 specific gravity sensor to computer;
Pretreatment: extract current 10 urine amount data and 10 specific gravity of urine data, and remove discrete point;
Filtering: pretreated urine amount data and specific gravity of urine data acquisition are carried out to filtering by the method for computation of mean values or the method for Kalman filtering;
Convert: filtered data are converted, be converted into the urine amount of accumulative total and current urine flow rate;
Show: demonstrate urine amount and urine flow rate curve over time by display.
From above scheme, owing to having adopted above-mentioned steps, and calculate urine amount and urine flow rate process in by means of specific gravity of urine data, certainty of measurement is significantly improved, experiment show that precision can reach 0.5%.
Further scheme is also to comprise a temperature correction step, and this step is arranged on after pre-treatment step, before filter step, for being the specific gravity of urine data under standard temperature by pretreated specific gravity of urine data reduction.Make the urine amount data that measure and urinate flow speed data more accurate.
For realizing another object of the present invention, urine amount provided by the invention and urinary flow rate measuring system comprise:
The scale pan and be shelved on the urine drainage bag on the described scale pan, described urine drainage bag has one for collecting the urinary catheter that enters of urine;
Weight sensor, the described scale pan is supported by 2 above described weight sensors;
Specific gravity sensor, enters on urinary catheter described in being connected on;
Computer, connects described weight sensor and described specific gravity sensor;
Display, connects described computer.
This urine amount and urinary flow rate measuring system have adopted the structure of table scale, and structure is relatively simple, measure relatively stable.
Brief description of the drawings
Fig. 1 is the structural representation of urine amount and urinary flow rate measuring system embodiment;
Fig. 2 is the flow chart of urine amount and urinary flow rate measuring method embodiment.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the invention will be further described.
Urine amount and urinary flow rate measuring system embodiment
Referring to Fig. 1, urine amount and urinary flow rate measuring system have a body with pedestal 1, on pedestal 1, be fixed with weight sensor 3 and weight sensor 4, the scale pan 2 is by weight sensor 3,4 supportings, on the scale pan 2, shelving urine drainage bag 6, enter the inner chamber of the lower end connected set urinal 6 of urinary catheter 6, upper end connects controlled micturition mouth, and specific gravity sensor 7 is connected on urinary catheter 6.
The data wire of weight sensor 3,4 and specific gravity sensor 7 is all connected to computer 8, and the video data line of computer 8 connects display 9.
Although Fig. 1 is a structural representation, but structural design more specifically, those skilled in the art can carry out according to general knowledge, as computer 8, display 9 can design in body or outside body as requested, as long as the selection of each sensor meets sensitivity or required precision.Different designs within the scope of these can realize object of the present invention.
Urine amount and urinary flow rate measuring method embodiment
Referring to Fig. 2 and Fig. 1, after urine amount and the work of urinary flow rate measuring system boot, just start measurement.
Gather: as long as controlled micturition, weight sensor 3,4 and specific gravity sensor will be passed to computer by the data of collection.Computer the data of two weight sensors are added and, then proofread and correct, the result deduction scale pan after correction and the weight of urine drainage bag are the urine weight of current time.
Pretreatment: computer, taking current time as reference point, extracts urine amount data and the specific gravity of urine data in 10 moment backward, weaves into 10 groups of data, organized into groups by the moment, and every group of data are to urine amount data and specific gravity of urine data that should the moment.Next, remove the discrete point in 10 groups of data, adopt histogrammic method to remove discrete point.
Filtering: computer adopts the method for computation of mean values to carry out filtering.Also can adopt the different filtering methods such as Kalman filtering to improve the effect of filtering.
Convert: calculate current urine amount relevant with filtering method, for example, when the method for selection computation of mean values is carried out filtering, current urine amount just equals the result of filtering.Calculate current urine volume, current urine amount and its corresponding specific gravity of urine are converted into current urine volume.Calculate current urine amount, according to the definition of urine amount, current urine amount just equals current urine volume.The urine amount in each moment and moment point composition urine discharge curve thereof.This curve has reflected patient's urine amount situation in real time.Urine amount has very crucial indicative function in section office such as clinical medicine, ICU monitoring, burn, nephropathy, even if can reflect patient's renal function situation.Calculate current urine flow rate, the urine discharge curve obtaining is carried out to differential, obtain urinating flow rate curve.Urine flow rate curve has reflected patient's urine flow rate situation in real time, even if can reflect patient's renal function situation.Finally, draw urine amount and urine flow rate curve, help a small child urinate by holding his legs apart discharge curve and urine flow rate curve plotting in two-dimensional coordinate plane, obtain urine amount and urine flow rate curve chart.
Show: demonstrate urine amount and urine flow rate curve over time by display.
Claims (3)
1. urine amount and urinary flow rate measuring method, comprise the steps
Gather: send the specific gravity of urine data of the urine amount data from more than 2 weight sensor and 1 specific gravity sensor to computer;
Pretreatment: extract current 10 urine amount data and 10 specific gravity of urine data, and remove discrete point;
Filtering: pretreated urine amount data and specific gravity of urine data acquisition are carried out to filtering by the method for computation of mean values or the method for Kalman filtering;
Convert: filtered data are converted, be converted into the urine amount of accumulative total and current urine flow rate;
Show: demonstrate urine amount and urine flow rate curve over time by display.
2. urinary flow rate measuring method according to claim 1, is characterized in that: also comprise
Temperature correction: be arranged on after described pre-treatment step, before described filter step, for being the specific gravity of urine data under standard temperature by pretreated specific gravity of urine data reduction.
3. urine amount and urinary flow rate measuring system, comprise
The scale pan and be shelved on the urine drainage bag on the described scale pan, described urine drainage bag has one for collecting the urinary catheter that enters of urine;
It is characterized in that:
Weight sensor, the described scale pan is supported by 2 above described weight sensors;
Specific gravity sensor, enters on urinary catheter described in being connected on;
Computer, connects described weight sensor and described specific gravity sensor;
Display, connects described computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410195627.7A CN103932720A (en) | 2014-05-09 | 2014-05-09 | Method and system for measuring urine volume and urine flow rate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410195627.7A CN103932720A (en) | 2014-05-09 | 2014-05-09 | Method and system for measuring urine volume and urine flow rate |
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| CN201410195627.7A Pending CN103932720A (en) | 2014-05-09 | 2014-05-09 | Method and system for measuring urine volume and urine flow rate |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106139318A (en) * | 2016-06-28 | 2016-11-23 | 成都市亿泰科技有限公司 | A kind of intelligent transfusion monitoring method based on integrated kalman filter |
| CN106491145A (en) * | 2016-07-15 | 2017-03-15 | 湾资医疗设备（上海）有限公司 | The detection means of urinary flow instrument |
| CN106556552A (en) * | 2016-11-15 | 2017-04-05 | 重庆工商大学 | A kind of method and its system of detection urine parameters change |
| CN109324188A (en) * | 2018-10-11 | 2019-02-12 | 珠海沃姆电子有限公司 | A kind of precision dynamic urine measurement method and system |
| CN112401890A (en) * | 2020-11-19 | 2021-02-26 | 华中科技大学同济医学院附属协和医院 | Urine dynamic monitor correcting method and monitoring system |
| CN112989260A (en) * | 2021-02-07 | 2021-06-18 | 湖北理工学院 | Interactive multi-model filtering method of automatic feeding weighing system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112989260A (en) * | 2021-02-07 | 2021-06-18 | 湖北理工学院 | Interactive multi-model filtering method of automatic feeding weighing system |
| CN112989260B (en) * | 2021-02-07 | 2022-11-01 | 湖北理工学院 | Interactive multi-model filtering method of automatic feeding weighing system |
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Application publication date: 20140723 |