JP4063726B2 - Urine flow measurement device - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a urine flow rate characteristic table used for urinary function diagnosis and a urine flow measurement device that acquires urine volume.
[0002]
[Prior art]
Conventionally, this type of urine flow rate measuring apparatus has a disk drive type as shown in FIG. In this method, the container 19 is fixed by the stand 23. The collected urine is dripped onto the disc 20 arranged at the lower part of the container 19. The disk 20 has a high circular center, and grooves are provided at equal intervals in the circumferential direction, and urine flows along the grooves. The disk 20 is directly connected to the drive shaft of the motor 21. If the motor 21 is driven at a constant rotational speed, the motor drive current changes in proportion to the urine flow rate due to the urine flow rate flowing through the disk. By measuring this amount of change, the urine flow rate can be converted.
[0003]
There is also a method of measuring the amount of change in mass due to the amount of urine collected by placing a load sensor at the bottom of the container. In some cases, the level of urine collected in a container is measured by an ultrasonic sensor, and the amount of change in the level is converted into a urine flow rate. Since either method is usually a fixed installation method, it is a hospital or the like.
[0004]
[Problems to be solved by the invention]
The above-described conventional system is usually installed in a hospital or the like, and it is difficult to reduce the size and weight because of its simple use at home and at work.
[0005]
[Means for Solving the Problems]
In Claim 1, the collection container of up-and-down release | release, the inclination tub which receives the urine which flowed out from the lower opening of the said collection container, the load sensor which detects the load of the said inclination mist, and the pseudo | simulation for the said inclination mist A pseudo load sensor for detecting a load of mass, a sensor base base for supporting the load sensor and the pseudo load sensor, an output signal obtained by measuring the load of the inclined rod by the load sensor, and a pseudo by the pseudo load sensor. A urine flow rate measuring device including a data processing board that receives an output signal obtained by measuring a mass load and calculates a urine flow rate.
[0006]
According to a second aspect of the present invention, the urine flow measurement device is provided with a display, and the time series change of the urine flow is displayed on the display.
[0007]
4. The time series change of the urine flow rate is recorded in a storage medium, and displayed as a urinary flow rate characteristic table showing the time series change of the urine flow rate in the data processing apparatus that has acquired the information of the storage medium. It is something to be made.
[0008]
According to a fourth aspect of the present invention, the urine flow rate is integrated on the data processing board to obtain a total urine volume.
[0009]
According to a fifth aspect of the present invention, the urine flow measuring device is configured as a portable type having a handle.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
By measuring the urine flow rate by the method of the present invention, the apparatus can be reduced in size and weight. In addition, a portable urine flow measurement device provided with a load sensor a and a subtractor 13 that eliminates a variable load error due to vibration or the like associated with carrying a urine flow measurement device and collecting urine will be specifically described below.
[0011]
In addition, when setting it as a fixed type urine flow measuring device, it comprises except the load sensor 3a and the subtractor 13 which cancel a fluctuation load.
[0012]
FIG. 1 is a block diagram of this apparatus. FIG. 2 is a system configuration diagram. FIG. 3 is an explanatory diagram of sampling measurement of urine flow rate, and FIG. 4 is a drawing of a urine flow rate characteristic table. These drawings will be described in detail.
[0013]
[Example 1]
As shown in FIGS. 1 and 2, the urine flow measuring device includes a collection container 1 that collects urine, an inclined tub 2 that receives urine flowing out from a lower opening of the collection container 1, and the inclined tub. 2 and a sensor base plate 4 to which the load sensor 3 is attached. The sensor base plate 4 includes a pseudo load (pseudo mass) 3b corresponding to an inclined rod and a load sensor (pseudo load sensor) 3a for detecting the pseudo load 3b in order to eliminate a variable load error due to vibration or the like. Is provided.
[0014]
Further, the urine flow rate measuring device receives the output signal detected by the load sensors 3 and 3a, calculates the urine flow rate, the data processing board 8, and the display 10 that outputs the calculation result of the data processing board 8, And a memory card 9 which is a storage medium for recording the calculation result of the data processing board 8.
[0015]
When the urine flow rate measuring device is portable, a handle 7 is provided. In some cases, the scattering prevention guide 6 for preventing scattering during urination is attached to the urine flow measuring device. Further, there is a case where the urine storage cassette 6a is attached to the urine flow rate measuring device to be used on a bed or the like.
[0016]
In the urine flow rate measuring apparatus, urine collected in the collection container 1 using the handle 7 flows out from the lower opening. The urine is received by the inclined ridge 2 held by the load sensor 3, and as shown in FIG. 3, the urine passes through a residence time T determined by the inclination angle Β of the inclined ridge 2 and the flow path length L flowing through the inclined ridge 2. It flows out from No. 2, is received by the funnel 5, and flows out from the lower outlet.
[0017]
The mass of urine flowing through the inclined ridge 2 is measured by the load sensor 3 as a mass including the mass of the inclined ridge 2. By subtracting the output signal value corresponding to the mass of the inclined rod 2 from the output signal value of the load sensor 3, it can be measured as the mass of the urine flow rate. This mass is recorded in the memory card 9 as a digital value by the data processing board 8 at a constant period.
[0018]
On the other hand, since the urine flow measuring device is held by the handle 7, the urine flow measuring device itself vibrates and is measured by the load sensor 3 as a fluctuating load. This fluctuating load is an error load not related to the urine flow mass. In order to cancel this error signal, a load sensor 3a is mounted on the same sensor base plate 4 as the load sensor 3 to mount a pseudo load 3b corresponding to the tilted rod 2 applied to the load sensor 3. The same fluctuating load is measured also in this load sensor 3a. By subtracting the output signal value of the load sensor 3a from the output signal value of the load sensor 3, this fluctuating load is cancelled. The mass signal of the urine flow rate obtained by canceling the fluctuating load is recorded in the memory card 9 as a digital numerical value at a certain period on the data processing board 8. In addition, the numerical value is displayed on the display 10.
[0019]
[Example 2]
As described in the first embodiment, the memory card 9 in which the mass of the urine flow rate is recorded is displayed on the urine flow rate characteristic table (FIG. 4) by the data processing device 11 separately installed.
[0020]
[Example 3]
When the urine flow measuring device described in the first embodiment is temporarily placed and used as a fixed installation, the urine collected in the collection container 1 of the urine flow measuring device flows out from the lower opening. The urine is received by the inclined tub 2 held by the load sensor 3, and flows out of the inclined tub 2 at a residence time T determined by the inclination angle の of the inclined tub 2 and the flow path length L flowing through the inclined tub 2, and enters the funnel 5. It is received and flows out from the lower exit.
[0021]
The mass of urine flowing through the tilted ridge 2 is measured by the load sensor 3 as a sum including the mass of the tilted ridge 2. By subtracting the output signal value corresponding to the mass of the inclined rod 2 from the output rod signal value of the load sensor 3, it is measured as the mass of the urine flow rate. Since this measurement data is the mass per unit time, the recorded data is recorded and displayed as a total urine volume by integrating the recorded data.
[0022]
As described in the first to third embodiments, in the urine flow measuring device of the present invention, the flow of urine is flowed to the inclined tub 2 without collecting urine, and the urine mass of the flow is continuously measured by the load sensor 3. Measure with The mass of the urine flow rate, which is the analog amount to be measured, is sampled at regular intervals and acquired as mass data. The data is digitally converted by the data processing board 8 and recorded in the memory card 9 in time series as urine flow rate data.
[0023]
By sampling the mass of urine flowing through the inclined tub 2 and measuring the mass, the urine volume per unit time, that is, the urine flow rate can be obtained by the following calculation formula. This will be described in detail below with reference to FIG.
[0024]
The urine flow velocity V flowing through the inclined tub 2 is determined by the length L through which the urine of the inclined tub 2 flows and the inclination angle Β according to the following equation.
V = √2GH
H = L * tanΒ
V = √2G * L * tanΒ
Here, G is the gravitational acceleration. H is the height in the gravity direction of urine flowing in the slanting tub. On the other hand, the time (T) during which urine flowing in the inclined tub 2 stays in the inclined ridge 2 is determined by the shape of the inclined ridge 2 as shown in the following equation.
T = L / V
T = L / √2G * L * tanΒ
T = √L / 2G * tanΒ
Therefore, the urine mass flowing per unit time is measured by measuring the urine mass flowing in the inclined ridge 2 every T time (sampling time = T). In practice, sampling data that is several times (three times or more) of the residence time T may be acquired and the average value taken in consideration of fluctuations in the urine flow rate and the like.
[0025]
From the urine flow rate data stored in the memory card 9, a urine flow rate characteristic table (FIG. 4) necessary for urination function diagnosis is obtained by the data processing device 11 installed separately.
[0026]
With this configuration, the structure of the urine flow rate measuring device is simpler and smaller and lighter than other methods. By providing the load sensor 3a and the subtractor 13, the error signal due to the fluctuating load accompanying carrying can be canceled.
[0027]
【The invention's effect】
As described above, the urine flow rate measuring apparatus of the present invention acquires urine flow rate data necessary for urination function diagnosis by sampling and measuring urine flow rate as mass per unit time. The data is recorded on the memory card 9. As a result, a portable and small and light device is obtained. Moreover, it has a function that can cancel the fluctuation error caused by carrying. With these functions, it can be used easily at home, at work, etc., and based on the urine flow rate data recorded in the memory card 9, the urine flow rate characteristic table as the urination diagnosis data can be easily obtained by the data processing device. Can be created.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing a configuration of an embodiment of the present invention.
FIG. 2 is a system configuration diagram showing an embodiment (Example 2) of the present invention.
FIG. 3 is an explanatory diagram for obtaining a urine flow rate by sampling measurement in the present invention.
FIG. 4 is a urinary flow rate characteristic table used for urine function diagnosis according to the present invention.
FIG. 5 is an overall configuration diagram showing an embodiment of the prior art.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Collection container 2 Inclined gutter 3 Load sensor 3a Load sensor a
3b pseudo load 4 sensor base plate 5 funnel 6 scattering prevention guard 6a urine storage cassette 7 handle 8 data processing board 9 memory card 10 display 11 data processing device 12 real time clock circuit 13 subtractor 14 analog-digital converter 15 microcomputer 16 connector 17 Battery 18 Guard 19 Container 20 Disc 21 Motor 22 Urine storage container 23 Stand 24 Motor controller

Claims (5)

A collection container that opens and closes;
An inclined jar receiving urine flowing out from the lower opening of the collection container;
A load sensor for detecting the load of the inclined rod;
A pseudo load sensor for detecting a load of a pseudo mass corresponding to the inclined rod; and
A sensor base that supports the load sensor and the pseudo load sensor;
A data processing board for calculating an urine flow rate by receiving an output signal obtained by measuring the load of the slanting ridge by the load sensor and an output signal obtained by measuring the load of the pseudo mass by the pseudo load sensor ; A characteristic urine flow measuring device. The urine flow measuring device is provided with a display,
Displaying the time series change of the urine flow rate on the display,
The urine flow measurement device according to claim 1 . Record the time series change of the urine flow rate in a storage medium,
In the data processing device that acquired the information of the storage medium, to display as a urinary flow rate characteristic table showing a time series change of the urine flow rate,
The urine flow measurement device according to claim 1 . In the data processing board,
Integrating the urine flow rate to obtain a total urine volume,
The urine flow measurement device according to claim 1 . The urine flow measuring device;
Configure a portable type with a handle,
The urine flow measurement device according to claim 1 .

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