JP5003552B2 - Urine component concentration measuring device, toilet device including urine component concentration measuring device, and solution component concentration measuring method - Google Patents

Description

  The present invention relates to a urine component concentration measuring device for measuring the concentration of a specific component in urine (a component to be measured for concentration among components contained in a solution to be measured is hereinafter referred to as “specific component”), urine The present invention relates to a toilet device provided with a component concentration measuring device, and a solution component concentration measuring method for measuring the concentration of a specific component contained in a solution to be tested.

  With the longevity and aging of people, personal interest in health management has increased, and in recent years, self-health checks for the purpose of early detection of diseases and health management during or after treatment have become important themes. . In particular, the concentration of specific components in urine (for example, urine sugar, protein, etc.) varies with various illnesses of the subject, so it is known as an important information source for grasping individual health conditions. . Therefore, various urine component concentration measuring devices for measuring the concentration of a specific component in urine, toilet devices equipped with a urine component concentration measuring device, and the like have been proposed.

  For example, Patent Document 1 discloses a urine component concentration measuring apparatus in which a urine collection nozzle for receiving urine excreted by a subject (hereinafter, this urine in an excreted state is also referred to as “original urine”) is provided separately from a toilet. Is disclosed. This urine component concentration measuring apparatus collects urine by moving the urine collection nozzle to the urine collection position in the toilet bowl and receiving the original urine by the moved urine collection nozzle during urine collection. The urine collected by the urine collection nozzle is fed to a predetermined measuring device, and the concentration of the specific component contained in the raw urine is calculated by this measuring device.

  Further, Patent Document 2 discloses a urine component concentration measuring device having a urine collection hole for collecting urine of a subject perforated in a toilet bowl and excreted in the toilet bowl. This urinalysis apparatus collects raw urine through a urine collection hole by providing a urine collection hole above the water storage surface in the toilet bowl. Then, the raw urine collected through the urine collection hole is sent to a predetermined measuring device, and the concentration of the specific component contained in the raw urine is calculated by this measuring device.

On the other hand, Patent Document 3 shows a relationship between the conductivity measuring means for measuring the conductivity of the mixed solution in which the raw urine is mixed in the water stored in the toilet bowl, and the relationship between the conductivity of the mixed solution and the dilution rate of the raw urine. A urine component concentration measuring device having a storage device storing data in advance is disclosed. This urine component concentration measuring device measures the conductivity of the mixed solution by the conductivity measuring means, and calculates the dilution rate of the raw urine based on the data indicating the relationship between the conductivity stored in the storage device and the dilution rate of the raw urine. The concentration of the specific component in the raw urine is calculated by multiplying the calculated dilution rate of the raw urine by the specific component concentration contained in the separately measured mixed solution.
JP-A-6-258315 JP-A-6-230006 JP-A-10-267925

  However, the urine component concentration measuring devices described in Patent Document 1 and Patent Document 2 measure the concentration of a specific component contained in the raw urine in the state of the raw urine. In order to collect the raw urine before the raw urine is mixed into the stored water in the toilet bowl, it is diluted when mixed in the stored water in the bowl and the concentration of a specific component cannot be measured in the subsequent process. A urine collection device such as a urine collection nozzle or a urine collection hole is installed at a position higher than the reservoir surface in the toilet bowl, and the raw urine is directly collected by the urine collection device. The method of collecting urine directly with a urine collector has the problem that it is difficult for children and women to urinate accurately toward the urine collector, and the urine that the subject excretes remains in the urine collector, which causes a bad odor. It may also cause dirt. Furthermore, there is a problem that the urine collection device is visually recognized by the subject in the toilet bowl, and the design property is lowered.

  In addition, when measuring the concentration of a specific component in a solution to be inspected for a diluted mixed solution obtained by diluting a solution to be inspected such as urine with a predetermined diluent, the measured value of the specific component concentration of the diluted mixed solution and the diluted mixed solution There is also a method for obtaining a specific component concentration in the solution to be inspected by calculation based on the dilution rate of the solution to be inspected.

  In this case, since the dilution rate of the solution to be inspected is the mixing ratio of the solution to be inspected and the diluted solution of the diluted mixed solution, the mixed state of the solution to be inspected and the diluted solution in the diluted mixed solution is not uniform as a whole Since the dilution rate of the test solution is unknown, the concentration of the specific component in the obtained test solution is also inaccurate.

  On the other hand, in the urine component concentration measuring device described in Patent Document 3, the mixed solution after the raw urine is mixed into the stored water is used as a measurement target, based on the urine component concentration of the obtained mixed solution and the dilution rate of the raw urine. Since the concentration of the urine component in the raw urine is calculated, there is no problem that the dilution rate of the raw urine due to the mixing of the raw urine and the stored water is unknown.

  That is, in this urine component concentration measuring device, the conductivity of the mixed solution obtained by measurement under the assumption that the conductivity of the raw urine is always constant, the conductivity of the mixed solution set in advance, and the raw urine The dilution ratio of the original urine in the mixed solution is obtained from the data showing the relationship with the dilution ratio of the urine, and finally the urine component concentration in the original urine is calculated from the urine component concentration in the mixed solution and the dilution ratio of the original urine ing.

  However, in practice, the conductivity of the raw urine varies greatly depending on the physical condition of the subject and the food to be consumed, so this assumption does not hold, and the relationship between the conductivity of the mixed solution and the dilution rate of the raw urine is not constant. Therefore, it was impossible to accurately measure the concentration of a specific component in urine by this method.

  Therefore, the present invention provides a urine component capable of reliably and accurately measuring the concentration of a specific component in the raw urine by measuring the diluted mixed solution after the raw urine is mixed with the stored water and diluted. By measuring the concentration measuring device, the toilet device equipped with the urine component concentration measuring device, and the diluted solution to be tested, the concentration of a specific component contained in the solution to be tested can be reliably and accurately measured. An object of the present invention is to provide a solution component concentration measurement method that can be used.

  In order to achieve the above object, the invention described in claim 1 is a urine component concentration measuring device for measuring the concentration of a specific component contained in urine, comprising a ball that stores the reservoir water and communicates with the sewer, A toilet that receives the excreted urine with the ball and discharges it to the sewer together with the stored water, a reference material mixed in the stored water before the urine is discharged, and the reference material mixed in the stored water Accordingly, the measurement reservoir water supply means for supplying the measurement reservoir water in which the concentration of the reference substance is a predetermined concentration before the urine contamination reference substance concentration into the ball, and the measurement reservoir after the urine contamination Urine contamination reference substance concentration measuring means for measuring a reference substance concentration after urine contamination which is the concentration of the reference substance of the urine contamination measurement reservoir water, and the specific component contained in the urine contamination measurement reservoir water Concentration of water component The concentration of the specific component contained in the urine based on the concentration of the component content in the stored water, the concentration of the reference material before urine mixing, the concentration of the reference material after urine mixing, and the concentration of the component of the stored water Urinary component concentration calculating means for calculating urinary component concentration, and the post-urine contamination reference substance concentration measuring means is for measuring urine contamination at a measurement position where the concentration of component content in the accumulated water measures the concentration of the component in the accumulated water. The concentration of the reference substance after mixing with urine is measured using stored water as a measurement target.

  According to a second aspect of the present invention, in the first aspect of the present invention, the concentration component measuring means for measuring the concentration in the vicinity of the bottom of the ball is the measurement position.

  According to a third aspect of the present invention, in the second aspect of the present invention, the urine-mixing measurement reservoir is provided at the bottom portion of the ball, and a part of the urinary mixing measurement water in the vicinity of the bottom portion of the ball. A measurement sample collecting means for collecting the measurement sample as a measurement sample and transferring the measurement sample to the outside of the ball, and the post-urine mixed reference substance concentration measurement means and the stored water component concentration measurement means are provided outside the ball. The measurement sample is used as a measurement target, and the post-urine-mixed reference substance concentration measurement unit measures the post-urine-mixed reference substance concentration, and the stored-water component concentration measurement unit measures each of the stored-water component concentration. To do.

  According to a fourth aspect of the present invention, in the third aspect of the present invention, the opening is a toilet flushing water spout provided at the bottom of the ball.

  The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein whether or not the mixed state of the urine in the urine contamination measurement reservoir has reached a predetermined mixed state. Urine mixing state determination means for determining the urine mixing reference substance concentration by the urine mixing reference substance concentration measuring means when the urine mixing state determination means determines that the predetermined mixing state has been reached. And each measurement of the concentration of the components in the stored water by the stored water component concentration measuring means is started.

  According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the urine mixing state determination means includes a urine contamination detection means for detecting the urine contamination in the measurement reservoir, and the urine contamination detection. And an elapsed time measuring means for measuring an elapsed time after the urine contamination is detected by the means, and the predetermined time when the elapsed time measured by the elapsed time measuring means has exceeded a predetermined time. It is characterized in that it is determined that the mixed state has been reached.

  The invention according to claim 7 is the invention according to any one of claims 1 to 6, characterized in that a stored water reducing means for reducing the amount of the stored water for measurement is provided.

  The invention according to claim 8 is the invention according to any one of claims 1 to 7, wherein the reference substance concentration before urine contamination and the reference substance concentration after urine contamination are calculated from absorbance or fluorescence intensity. It is characterized by having a concentration.

  The invention according to claim 9 is the invention according to any one of claims 1 to 8, wherein the measuring water supply means supplies water to be stored into the ball from a predetermined water supply source. Water supply means for supplying, and reference substance mixing means for mixing the reference substance into the water supplied by the water supply means, wherein the reference substance mixing means has a concentration of the reference substance before the urine mixing reference substance The reference substance in an amount to be a concentration is mixed in the water.

  The invention according to claim 10 is the invention according to any one of claims 1 to 9, wherein the specific component is a component reflecting biological information of a subject leaking into urine such as sugar or protein. It is characterized by that.

  Invention of Claim 11 is a toilet device provided with the urine component density | concentration measuring apparatus as described in any one of Claims 1-10.

  The invention according to claim 12 is a solution component concentration measurement method for measuring the concentration of a specific component contained in a solution to be inspected, wherein a reference substance is mixed in a predetermined liquid and the concentration of the reference substance is a predetermined concentration. Preparing a measurement solution having a reference material concentration before mixing, mixing the solution to be inspected into the measurement solution to form a measurement mixed solution, and the specific component contained in an arbitrary position in the measurement mixed solution The concentration of the mixed solution component that is the concentration of the reference material, and the concentration of the reference material after mixing that is the concentration of the reference material of the measurement mixed solution are also measured, and the concentration of the reference material before mixing and the reference material after mixing The concentration of the specific component contained in the test solution is calculated based on the concentration and the concentration of the mixed solution component.

  According to the first aspect of the present invention, the concentration change of the reference substance is measured at the position where the concentration of the specific component in the fixed urine mixed water that is the diluted mixed solution is measured, and the concentration change of the measured reference substance is measured. The concentration of the specific component contained in the raw urine is calculated using the dilution ratio of the raw urine obtained from the urine. Regardless, the concentration of the specific component contained in the raw urine can be calculated accurately.

  Therefore, high-precision raw urine can be obtained even if measurement is performed at an arbitrary position using the urine-mixed fixed water in the bowl, where mixing of the measurement water and raw urine may be uneven. It becomes possible to reliably obtain the measurement result of the specific component concentration.

  For this reason, since a toilet bowl with a large opening and water storage can be used as a urine collection container when measuring, it is possible for women and children to easily collect urine, and the range of subjects to be measured The reliability of measurement can be secured even if it is spread. In addition, since a toilet is used, urination after measurement can be performed using the cleaning function of the toilet, so that a clean measurement environment can be easily maintained.

  According to the second aspect of the present invention, the component concentration measuring means for the stored water easily retains the raw urine having a specific gravity larger than that of the stored water even in various urination environments, and becomes a portion having a relatively high urine mixing ratio. Since the urine contamination measurement reservoir near the bottom of the ball is likely to be measured, it is more suitable for any subject with different urine input position and urine output. A reliable and highly accurate measurement result can be obtained.

  According to the third aspect of the present invention, it becomes easy to design an apparatus configuration that provides an appropriate environment for the post-urine-mixed reference substance concentration measuring unit and the stored water component concentration measuring unit that require a delicate environment. Therefore, the reliability as a urine component concentration measuring device is improved.

  According to the invention described in claim 4, since the configuration provided in the existing toilet bowl is used, when a measurement sample is taken as a urine component concentration measuring device, foreign matter in the ball is mistakenly added together. Even if the opening may be blocked due to suction, it is originally used as a toilet flushing water outlet. Can be removed. Thereby, it becomes easy to maintain the measurement environment of the apparatus in a normal state, and the reliability of the apparatus can be improved.

  According to the fifth aspect of the present invention, the urine mixing state determination means confirms that the mixing state of urine in the urine contamination measurement reservoir water has become a predetermined mixing state. Even if there are individual differences in the state of urine contamination, it is possible to reliably set the measurement start time when the measurement is in the mixed state for each measurement. Accurate measurement results can be obtained.

  According to the invention described in claim 6, since the determination that the amount of raw urine necessary for measurement is mixed in the urine contamination measurement reservoir water is made in an easily managed elapsed time, the configuration of the apparatus is simplified. Can do.

  According to the seventh aspect of the invention, the amount of urine relative to the amount of measurement water is increased by reducing the amount of measurement water before mixing with urine, and urine near the bottom of the ball is increased. Since the concentration of the raw urine in the contaminated measurement reservoir water can be within the concentration range necessary for measurement, it is possible to obtain a reliable and highly accurate measurement result.

  According to the invention described in claim 8, since the concentration of the reference substance can be accurately measured by measuring the physical property value of the reference substance contained in the measurement water before and after mixing with urine, it is reliable and high. Accurate measurement results can be obtained.

  According to the ninth aspect of the present invention, there is no need to separately prepare equipment for preparing and storing an aqueous solution mixed with a reference substance as measurement water.

  According to the invention of claim 10, health related to lifestyle-related diseases that progress slowly without subjective symptoms by measuring components closely related to lifestyle-related diseases such as diabetes It is possible to use the urine component concentration measuring device meaningfully for checking.

  According to the eleventh aspect of the present invention, since the urine component concentration measuring device is integrally assembled with the toilet device, the installation at the installation site becomes simple because only the toilet device is used for water distribution and piping connection.

  According to the twelfth aspect of the present invention, it is possible to reliably and accurately measure the concentration of a specific component contained in a solution to be tested other than urine, for example, human blood or sweat.

  The embodiment for carrying out the present invention will be described in detail below, but before that, the present invention can be applied when measurement is performed using a diluted mixed solution obtained by diluting a solution to be inspected containing a specific component with a diluent. The measurement principle of the specific component concentration will be described below.

  Here, for convenience of explanation of the principle, the specific component is a measurement substance, the diluent is a solution A, and the solution to be inspected is a solution B. The diluted mixed solution in which the solution A and the solution B are mixed to dilute the measurement substance is referred to as a mixed solution (A + B).

At an arbitrary position in the mixed solution (A + B), the ratio of the solution A diluted by mixing is defined as the dilution ratio Da of the solution A, and conversely, the ratio of the solution B that is the solution to be tested is diluted. The dilution rate Db is defined as the following equation. That is,
Da = amount of solution A / amount of mixed solution (A + B),
Db = Amount of Solution B / Amount of Mixed Solution (A + B) (Formula 1)
On the other hand, if the concentration of the measurement substance contained in the solution B at that position is Q ₀ and the concentration of the measurement substance in the mixed solution (A + B) is Q ₁ , 2].

Db = Q ₁ / Q ₀ (Formula 2)
Therefore, the concentration Q ₀ of the measurement substance in the solution B is expressed by the following [Expression 3] derived from [Expression 1] and [Expression 2].

Q ₀ = Q ₁ / Db (Formula 3)
That is, analyte concentration Q ₀ in the solution B is the object of the concentration measurement, and thus obtained from the dilution Db measured substance concentration Q _1, the solution B in the mixed solution (A + B).

Therefore, the measurement substance concentration Q ₀ in the solution to be inspected and the measurement substance concentration Q ₁ in the diluted mixed measurement solution obtained by diluting the solution to be inspected with the diluting solution are measured using the relationship of [Equation 3]. The dilution solution measurement method determined by doing so was used.

  However, in that case, the mixing ratio of the solution to be inspected and the diluted solution in the whole diluted mixed measuring solution that can be known in advance (hereinafter, the mixing ratio of both solutions as the whole diluted mixed measuring solution is referred to as “mixing ratio”). Was considered as the dilution ratio Db, and [Equation 3] was applied.

  Therefore, in the conventional method, it has been a major premise of accurate measurement that this mixing ratio can be regarded as the dilution rate Db, that is, that the entire diluted mixed measuring solution is in a uniform mixed state. Therefore, when the diluted mixed measurement solution is not in a uniform mixed state, the dilution rate at an arbitrary point in the diluted mixed measurement solution is not limited to this mixing ratio. Considering the rate Db causes a measurement error, so it was necessary to take some means to achieve a uniform mixed state.

Therefore, in the present invention, the dilution rate Db at the position where the measurement substance concentration is actually measured in the mixed solution (A + B) is obtained by measuring together with the measurement substance concentration Q ₁ in the mixed solution (A + B). By doing so, the concentration Q ₀ of the measurement substance in the solution B can be accurately measured regardless of the mixed state of the mixed solution (A + B).

  Specifically, when the position where the measurement substance concentration in the mixed solution (A + B) is measured is the position X, the dilution rate Db and the dilution rate Da at the position X are hereinafter referred to as the dilution rate Dax and the dilution rate Dbx, respectively. Then, since both are in the same position, the relationship represented by the following [Equation 4] always holds between them.

Dbx = 1−Dax (Formula 4)
That is, the dilution rate Dbx at an arbitrary position X in the mixed solution (A + B) can be obtained if the dilution rate Dax of the solution A at that position is known. In that case, [Expression 3] is expressed by the following [Expression 5] when this [Expression 4] is applied.

Q ₀ = Q ₁ / (1-Dax) (Formula 5)
That is, the concentration Q ₀ of the measurement substance in the solution B to be measured can be obtained if the measurement substance concentration Q ₁ in the mixed solution (A + B) and the dilution rate Dax of the solution A at that position are known.

  Here, this dilution rate Dax by dilution mixing is also a ratio of the concentration of the measurement substance contained in the solution A before and after the mixing of the solution A and the solution B. In the present invention, paying attention to this, this concentration A substance serving as a mark of the above is mixed in the solution A in advance, and the dilution rate Dax is obtained from the concentration change of the substance before and after the mixing of the solution A and the solution B. Hereinafter, this substance is referred to as a target substance, and the calculation principle of the dilution rate Dax will be described.

Here, a mixed solution (A + B) position measuring said analyte concentration to Q ₁ in after mixing with pre-mixing concentration target substance concentration Ma, solution B of the target substance in the mixed prior to solution A and the solution B Assuming that the target substance concentration in X is the target substance concentration Mbx after mixing, the dilution rate Dax is expressed by the following [Equation 6].

Dax = Mbx / Ma (Formula 6)
Therefore, [Expression 5] for obtaining the measured substance concentration Q ₀ of the target solution B from the relationship of [Expression 6] is further expressed by the following [Expression 7].

Q ₀ = Q ₁ / (1-Max / Ma) (Expression 7)
That is, the measurement substance concentration Q ₀ of the solution B before mixing is the target substance concentration Ma of the solution A before mixing, the measurement substance concentration Q ₁ and the target substance concentration at an arbitrary position X in the mixed solution (A + B) after mixing. If Max is known, it will be obtained.

That is, a predetermined target substance is previously mixed in the solution A before mixing so as to have a uniform predetermined concentration Ma, and the same position X is measured when measuring the measured substance concentration Q ₁ in the mixed solution (A + B) after mixing. In addition, the concentration Max of the target substance is also measured, and the dilution rate Dax at the position X is accurately calculated, so that the concentration Q ₀ of the measurement substance in the solution B can be finally calculated accurately. It becomes.

  From the above, in the urine component concentration measuring apparatus of the present invention, the above-described solution A is the measurement reservoir water, the solution B is the urine (original urine) excreted by the subject, and the solution (A + B) is the urinary mixture measurement reservoir water. The target substance is a reference substance and the measurement substance is a specific component in the urine, and the reference substance concentration of the measurement water and the specific component concentration and reference substance concentration of the urine contamination measurement water at any location are measured. Thus, the target component concentration in urine is obtained.

  Further, in the solution component concentration measuring method of the present invention, the above-mentioned solution A is a measurement solution, solution B is a solution to be tested, solution (A + B) is a mixed solution for measurement, a target substance is a reference substance, and a measurement substance is a specific component. The reference substance concentration of the measurement solution, the specific component concentration and the reference substance concentration of the measurement mixed solution are obtained, and the specific component concentration in the target solution to be inspected is obtained.

  The reference substance concentration and the specific component concentration used in the present invention are not only those obtained by directly measuring the concentration of the solution to be measured, but also predetermined physical property values that are known to be related to the concentration. It also includes the case where the concentration is obtained by measurement as a substitute characteristic of the above.

  That is, generally, if the substance concentration Q of a certain substance in the solution and the physical property S of the substance have a known correlation as shown in the following [Equation 8], the concentration value is obtained from the measured physical property value Sx. Qx is determined. Therefore, in the present invention, it is also possible to employ measurement of the physical property S as a substitute characteristic of the substance concentration Q. This point will be described in detail in the embodiments described later.

Q = f (s) (Formula 8)
However, the function f (s) is a known function.

  The details of the measurement principle of the present invention have been described above. Next, details of a preferred embodiment of the present invention will be described below.

  The urine component concentration measuring device according to the present invention is a urine component concentration measuring device for measuring the concentration of a specific component contained in urine, comprising a ball that stores stored water and communicated with a sewer, A toilet bowl received by a ball and discharged to the sewer together with the stored water, a reference material mixed in the stored water before the urine is discharged, and the reference material by mixing the reference material into the stored water The measurement reservoir water supply means for supplying the measurement reservoir water into the ball with the concentration of the reference substance before mixing with urine as a predetermined concentration, and the urine contamination as the measurement reservoir water after mixing the urine A post-urine mixed reference substance concentration measuring means for measuring a post-urine mixed reference substance concentration that is the concentration of the reference substance in the measurement reservoir water, and a retained water that is the concentration of the specific component contained in the urine mixed measurement reservoir water Measure component concentration Urine that calculates the concentration of the specific component contained in the urine based on the component concentration measuring means in water, the reference substance concentration before urine mixing, the reference substance concentration after urine mixing, and the component concentration of the stored water Medium concentration calculation means, and the post-urine contamination reference substance concentration measurement means measures the urine contamination measurement reservoir water at the measurement position where the retention water component concentration measurement means measures the retention water component concentration. As a target, the reference substance concentration after urine contamination is measured.

  In other words, the stored water stored in the bowl of the toilet bowl is a measurement stored water in which a reference substance is mixed in advance and the reference substance concentration is a predetermined concentration before the urine mixture, and the measured stored water The urine component concentration in the urine contamination measurement water containing urine was measured and the urine concentration was determined based on the amount of change in the reference substance concentration corresponding to the dilution ratio of the urine component at the measurement position of the urine component concentration. The concentration of the specific component contained in is determined.

  Therefore, the predetermined concentration which is the concentration of the reference substance in the present invention is not limited to a specific concentration as long as the concentration of the reference substance in the measurement water before mixing with urine is uniform. That is, as will be described later, the reference substance concentration in the measurement reservoir before and after mixing with urine may be any concentration within the concentration range that can be measured by the reference substance concentration measuring means after mixing with urine.

  Further, the amount of water for measurement in the toilet bowl at the time of measurement can be arbitrarily set within a range in which the specific component concentration after mixing with urine is within the measurable range of the component concentration measuring means for the stored water. That is, depending on the type of toilet used, a phenomenon occurs in which the urine contamination measurement reservoir overflows from the toilet bowl, which is a urine collection container, and flows out to the sewage pipe due to the urination of the subject. Even in the case of a change, it is possible to accurately measure the concentration of the specific component contained in the raw urine if the concentration of the specific component after mixing with urine is within the measurable range of the component concentration measuring means in the stored water.

  Further, in the urine component concentration measuring device according to the present invention, the stored water component concentration measuring means is intended to measure the urine contamination measurement stored water near the bottom of the ball, the vicinity of the bottom of the ball, It may be a place where the raw urine having a specific gravity larger than the stored water is likely to stay near the position in contact with the bottom of the ball in the vertical cross section of the ball.

  Further, in the urine component concentration measuring apparatus according to the present invention, the measurement sample collecting means for transferring a part of the urinary mixed measurement water to the outside of the ball is capable of collecting the measurement sample and transferring it to the outside of the ball. As long as it is sufficient, a suction method by providing a suction port or any other method can be adopted.

  For example, a configuration may be adopted in which an amount of measurement sample necessary for measurement is collected in a small collection container near the bottom of the ball, and then moved to the outside of the ball together with the collection container. In that case, if the collection container from which the measurement sample is collected is sealed and transferred, there is no problem that foreign matters are mixed into the measurement sample in the transfer path. For this reason, it is possible to measure the concentration with higher accuracy even when a specific component that is a concern about contamination by foreign substances in the transfer path is used as a measurement target of the present apparatus.

  Note that the measurement sample collecting means may use a toilet flushing water outlet provided at the bottom of the ball as an opening for collecting urine-mixing measurement water. As the toilet flushing water discharge port, a zet hole of a zet water discharge nozzle provided in the toilet unit can be employed.

  Here, since the urination position and the amount of urination for the measurement water are generally different among subjects, even if excreted urine (original urine) is mixed into the measurement water in the ball, The mixed state of urine in the subsequent urine contamination measurement running water is not uniform in terms of time and position. Therefore, the specific component contained in the urine contamination measurement reservoir at the measurement position of the component concentration measuring means May not reach the concentration range necessary for measurement by each means.

  Therefore, the urine component concentration measuring apparatus according to the present invention has urine mixing state determination means for determining whether or not the mixing state of urine in the urine mixed measurement reservoir has reached a predetermined mixing state, When the state determining means determines that the predetermined mixing state has been reached, the measurement of the post-urine-mixed reference substance concentration by the post-urine-mixed concentration measuring means and the measurement of the stored water component concentration by the stored water component concentration measuring means are started. Anyway.

  In addition, as the predetermined mixed state, urine is mixed in the urine within a concentration range in which the post-urine mixed physical property value measuring unit can measure the post-urine mixed reference substance concentration and the stored water component concentration measuring unit. This refers to the state of being mixed in the reservoir water.

  Further, in the urine component concentration measuring device according to the present invention, the urine mixing state determination means detects urine contamination by the urine contamination detection means for detecting the urine contamination in the measurement water and the urine contamination detection means. And an elapsed time measuring means for measuring an elapsed time from the time when the elapsed time measured by the elapsed time measuring means has exceeded a predetermined time, the mixing state of the raw urine in the urinary mixed measurement reservoir is predetermined. It may be determined that the mixed state is reached.

  The predetermined time is necessary until the raw urine is diffused in the urine-mixed measurement water after the raw urine is mixed into the measurement water. What is necessary is just to obtain | require time beforehand and to select the appropriate time more than the time.

  Here, in general, when the subject is a male, urinating in a standing position rather than urinating while sitting on a toilet seat results in incidence of urine from a higher position with respect to the measurement water, The flow rate of urine is large, so that urine is easily diffused in the urine contamination measurement reservoir. Therefore, the amount of urine staying in the vicinity of the bottom of the ball may be reduced, and the concentration of urine contained in the urine contamination measurement reservoir near the bottom of the ball may not be relatively high. It is also assumed that the amount of urine excreted by the subject is small. In such a case, even if the urine contamination measurement reservoir near the bottom of the ball is used as a measurement target of the component concentration measurement means, the specific component concentration in the measurement target is higher than the minimum concentration necessary for the measurement of the component concentration of the pool May not contain enough raw urine.

  Therefore, in the urine component concentration measuring apparatus according to the present invention, a retention water reducing means for reducing the amount of the measurement water is provided, and the amount of the measurement water is reduced by the retention water reduction means. The amount of urine relative to the amount of stored water may be increased relatively.

  As the accumulated water reducing means, a jet water discharge nozzle provided in the toilet part can be used. In this case, before the urine excreted by the subject is mixed into the measurement water, the washing water may be jetted from the jet water discharge nozzle. That is, the washing water sprayed from the jet water discharge nozzle pushes out the measurement water stored in the ball and discharges it outside the ball. As a result, the amount of the measurement reservoir water is reduced by the amount of the measurement reservoir water between the full water level and the predetermined water level.

  In addition, the water level of the measurement water after the amount of the measurement water is reduced is a predetermined water level that does not fall below the sealed water level, which is the lowest water level that blocks communication with the sewer pipe from the full water level of the ball. It is good to do. Thereby, the backflow of the foul odor from a sewer pipe can be prevented at the time of measurement.

  In this way, by reducing the amount of water for measurement by the stored water reducing means, for example, when the measurement position of the stored water component concentration measuring means is near the bottom of the ball, the concentration of the specific component at the measurement position increases. In addition, the distance between the position where the urine lands on the measurement reservoir and the bottom of the ball is reduced, and the urine diffusing in the measurement reservoir is likely to reach the vicinity of the bottom of the ball. For this reason, the density | concentration of the specific component in the bottom part vicinity of a ball | bowl becomes a density | concentration of the specific component which can be measured by the stored water component density | concentration measuring means in a short time. As a result, the time required for measurement can be shortened.

  Here, the reference substance concentration of the measurement reservoir water in the urine component concentration measuring apparatus according to the present invention may be obtained by a method of measuring a physical property value indicating a relation corresponding to the concentration of the substance adopted as the reference substance. good. In this case, the physical property values that can be applied in the urine component concentration measuring apparatus according to the present invention may be physical property values that can distinguish the reference substance and the raw urine in the measurement water. In that case, the reference substance mixed into the stored water is a substance that does not cause a chemical reaction even when it comes into contact with the raw urine, and can measure changes in the physical properties of the reference substance without being affected by the contamination of the raw urine. Any substance may be used as long as it is present.

  Therefore, as physical property values applicable in the urine component concentration measuring apparatus according to the present invention, for example, absorbance or fluorescence intensity can be adopted. When absorbance is selected as the physical property value, a substance having an absorption characteristic in a wavelength band different from that of urine can be used as a reference substance. As a result, the absorbance before and after urination of the reference substance contained in the measurement water can be measured without being affected by urine contamination, and as a result, the concentration of the specific component of the original urine can be calculated.

  Further, in the case of selecting the absorbance as the physical property value to be measured, the concentration measuring means before urine mixing and the concentration measuring means after urine mixing are stored in a sample cell made of a transparent material such as glass before and after mixing with urine. And irradiating the measurement water with parallel light from a predetermined light source, an absorptiometer for measuring the absorbance of the measurement water can be obtained.

  In this case, for example, methylene blue can be selected as a reference substance for measuring absorbance. Since this methylene blue has a wavelength band of absorbance different from that of raw urine, it can be distinguished from raw urine in the measurement reservoir, and the absorbance of the reference substance contained in the measurement reservoir before and after urine contamination. Can be measured accurately.

  Here, as physical property values applicable in the urine component concentration measuring apparatus according to the present invention, in addition to absorbance and fluorescence intensity, in the case where there is a significant difference in measured values between the reference substance and raw urine, for example, conductivity It may be a ratio, specific gravity, osmotic pressure, refractive index, or the like. In this case, instead of the above-described absorbance meter, an apparatus for measuring each physical property value can be used.

  The measuring water supply means in the urine component concentration measuring apparatus according to the present invention includes a water supply means for supplying water into the ball from a predetermined water source, and the reference substance is mixed in the water supplied by the water supply means. The reference substance mixing means may mix the reference substance in an amount such that the concentration of the reference substance becomes the reference substance concentration before mixing with urine.

  By doing so, it is possible to create a measurement reservoir having a uniform concentration of the reference substance before the measurement reservoir supply means supplies the measurement reservoir into the ball.

  Further, the reference substance mixing means in the urine component concentration measuring apparatus according to the present invention comprises a reference substance storage tank that stores the reference substance, and a pump that forcibly pumps the reference substance in the reference substance storage tank. The reference material in the reference material storage tank is supplied to and mixed with the water supply pipes constituting the water supply means by this pump, so that the water stored in the bowl of the toilet bowl has a concentration of the reference material. It is also possible to make the reservoir water for measurement uniform.

  In this way, the stagnant water and the reference substance are uniformly mixed by the stirring action on the flowing water such as a pipe bend in the path in the water supply pipe until it flows into the bowl of the toilet bowl. It is not necessary to separately provide a stirring means or the like for uniformly mixing the substance, and the configuration of the apparatus can be simplified.

  In this case, for example, if the end of the water supply pipe is a rim water discharge nozzle, the water mixed with the reference material discharged from the rim water discharge nozzle flows spirally from the upper part of the ball toward the lower part. The water and the reference material are further mixed by the flow of the water, so that the measurement mixed water necessary for the measurement of the reference substance concentration change amount is obtained.

  Moreover, when measuring a component that reflects biological information of a subject leaking into the urine, such as sugar or protein, as the specific component measured by the urine component concentration measuring apparatus according to the present invention, for example, the concentration of sugar as the specific component In the case of measuring the concentration, the component concentration measuring means of the stored water can be a concentration meter that measures the glucose concentration by the existing detection principle. In addition, if the urine component concentration measuring device has a common power supply and water supply connection with the toilet device, it can also be used for normal toilet device installation work. The installation of the concentration measuring device will be completed, and the installation at the installation site will be simplified.

  In addition, the urine component concentration measuring device is housed and disposed in a casing provided separately from the toilet part normally used for excretion, and connected to the toilet part via piping or wiring to provide water supply means provided in the toilet part In addition to this configuration, the toilet unit itself may be used as a storage case, and a toilet device having a configuration in which the urine component concentration measuring device is integrally stored may be used. Is also possible. In this way, the design can be improved, the interior of the toilet to be installed can be made clean, and since it can be handled integrally with the toilet device, distribution management is also facilitated. .

  In the urine component concentration measuring apparatus according to the present invention, the concentration of a specific component contained in the raw urine was measured. However, the present invention is not limited to a solution other than urine, for example, a component such as human blood or sweat. It may be applied to analysis.

  In such a case, the present invention provides a solution component concentration measurement method for measuring the concentration of a specific component contained in a solution to be inspected, wherein a reference substance is mixed in a predetermined liquid and the concentration of the reference substance is a predetermined concentration. Prepare a measurement solution having a pre-reference substance concentration, mix the solution to be inspected into the measurement solution to create a measurement mixed solution, and add the specific component contained in any position in the measurement mixed solution. The concentration of the mixed solution component, which is a concentration, is measured together with the concentration of the reference material after mixing, which is the concentration of the reference material in the measurement mixed solution, and the concentration of the reference material before mixing and the concentration of the reference material after mixing And the concentration of the specific component contained in the solution to be inspected is calculated based on the mixed solution component concentration.

  Here, in the solution component concentration measurement method according to the present invention, as a solution to be inspected, if it is in the form of a solution such as saliva in addition to these human blood and sweat, a reference substance to be mixed and a measurement solution are appropriately selected. By doing so, it is possible to reliably and accurately measure the concentration of the specific component contained in the solution to be inspected.

  Furthermore, even if it is a component contained in a solid substance, when it can be made into a solution to be inspected by selecting an appropriate solution in which this substance is mixed, the present invention is applied. By applying the solution component concentration measurement method, it is possible to reliably and accurately measure the concentration of a specific component contained in the substance. Even in this case, each physical property value indicated by the substance in the corresponding solution is measured as a substitute characteristic of the reference substance concentration before mixing, the reference substance concentration after mixing, and the mixed solution component concentration. Can do.

[1. First Embodiment]
[1.1 Overall configuration]
Embodiments of the present invention will be described below with reference to the drawings.

  1 to 4 show an outline of a toilet apparatus provided with a urine component concentration measuring apparatus according to a first embodiment to which the present invention is applied.

  FIG. 1 is a schematic diagram showing the appearance of the entire toilet device provided with the urine component concentration measuring device, FIG. 2 is a side sectional view of the toilet unit provided in the toilet device, and FIG. 3 is the overall configuration of the toilet device and its electrical FIG. 4 is a partially enlarged cross-sectional view of the jet water discharge nozzle provided in the toilet part shown in FIG. 2. In FIG. 3, the flow of electrical signals is indicated by broken lines, and the flow of substances such as water and urine is indicated by solid lines.

  As shown in FIG. 1, a toilet device 1 contains a conventional toilet unit 2 of any type and a part of a urine component concentration measuring device 5 which is disposed behind the toilet unit 2 and will be described in detail later. And the operation / display unit 4 of the urine component concentration measuring device 5 disposed at a predetermined position in the toilet space.

[1.2. Configuration of toilet bowl]
The toilet unit 2 is an existing siphon-zette type western toilet, and as shown in FIGS. 1 and 2, a toilet seat 6 disposed in an openable manner on the upper surface opening of the toilet body 2 a and a toilet seat 6 on the toilet seat 6. The toilet lid 7 is also provided so as to be openable and closable. 2, illustration of the toilet seat 6 and the toilet lid 7 is omitted. In addition, a functional part casing 8 is placed at the rear part of the toilet body 2a, and the functional part casing 8 has a cleaning function for supplying and discharging toilet flushing water such as a water supply valve 22 and a water channel switching valve 24 described later. The unit 20 (see FIG. 3) and a local cleaning device (not shown) are accommodated.

  The interior of the toilet main body 2a is partitioned into a ball 10 and a trap part 14 by a partition wall 10a. A rim part 11 is formed on the upper peripheral edge of the ball 10, and a rim part 11 is not shown slightly behind the rim part 11. A rim water spouting nozzle 12 communicating with the water source is provided.

  Further, the trap portion 14 is formed in a substantially inverted U shape so as to connect a trap inlet 14 a formed in the lower rear portion of the ball 10 and a trap drain port 14 b opened in the lower surface of the toilet portion 2.

  Moreover, the bottom 10c of the ball | bowl 10 is provided with the jet water discharge nozzle 16 which injects washing water toward the trap inflow port 14a so as to oppose the trap inflow port 14a. At the tip of the jet water discharge nozzle 16, washing water is jetted from the bottom of the ball 10 toward the trap inlet 14 a, and a jet hole 16 a as a toilet flushing water outlet that induces a siphon phenomenon in the trap portion 14. Is open.

  As shown in FIG. 3, a cleaning unit 20 is housed inside the functional unit casing 8, and the cleaning unit 20 supplies water by directly connecting to a predetermined water source and using the water supply pressure of the water source. A water supply valve 22, a solenoid-type water path switching valve 24 that is connected to the water supply valve 22 through a pipe R <b> 1 and is supplied with the cleaning water supplied from the water supply valve 22 by switching the flow path, and a water path switching valve 24. And a toilet control unit 21 that controls the operation of the entire toilet unit 2 such as controlling the opening and closing of the water channel switching valve 24. Further, the water channel switching valve 24 is connected to the rim water discharge nozzle 12 and the jet water discharge nozzle 16 through a pipe R2 and a pipe R3, respectively. The toilet control unit 21 is electrically connected to a control unit 40 of the urine component concentration measuring device 5 described later, and transmits and receives various data to and from the control unit 40.

  With this configuration, when the filth washing process is performed by pressing a washing switch (not shown) provided in the toilet body 2a, the toilet control unit 21 outputs a control signal for opening the water channel switching valve 24, The water source is connected to the pipe R2 side, and water is supplied to the rim water discharge nozzle 12. Water from the water source is discharged from the rim water discharge nozzle 12 into the ball 10 (see FIG. 2) as cleaning water, and cleaning is started while turning the inner wall of the ball 10.

  When the predetermined time has elapsed, the toilet controller 21 outputs a control signal for switching the flow path from the pipe R2 to the pipe R3 to the water channel switching valve 24. Thereby, the water from the water source flows into the pipe R3 without flowing into the pipe R2, and is jetted as cleaning water from the jet hole 16a of the jet water discharge nozzle 16 toward the trap inlet 14a (see FIG. 2). In this case, a siphon phenomenon is caused to occur, and zet cleaning is performed in which the filth flows out to the trap drain 14b (see FIG. 2).

  When a predetermined time has elapsed from the start of the zet cleaning, the toilet controller 21 outputs a control signal to the water channel switching valve 24 and switches the flow channel from the pipe R3 to the pipe R2 again. As a result, water from the water source is supplied again to the rim water spouting nozzle 12 as washing water, forming the pool 18 (see FIG. 2) in the ball 10 and sealing the ball 10 of the toilet body 2a. At this time, the cleaning unit 20 including the toilet control unit 21, the water channel switching valve 24, and the water supply valve 22 functions as a water supply unit that supplies water to be stored water 18 stored in the ball 10. In this embodiment, the cleaning unit 20 is provided in the functional unit casing 8 of the toilet unit 2. However, the cleaning unit 20 may be provided in the urine component concentration measuring device 5 and housed in the back cabinet 3. good.

[1.3 Configuration of urine component concentration measuring device]
Next, the configuration of the urine component concentration measuring apparatus 5 that is a characteristic configuration of the present embodiment will be specifically described. The urine component concentration measuring device 5 according to the present embodiment measures urine excreted by a subject, that is, collects raw urine and measures the concentration of sugar as a specific component contained in the raw urine, as described above. In addition, it is incorporated in the toilet device 1 together with the existing toilet unit 2.

  Then, the urine component concentration measuring device 5 uses a methylene blue liquid as a reference substance, a sugar (urine sugar) which is one of specific components of urine (raw urine), a measurement solution as a reference substance in the description of the measurement principle described above. The measurement reservoir water, urine (original urine) excreted by the test subject solution, and the measurement mixed solution are urine mixed measurement reservoir water. In the present embodiment, the absorbance, which is one of the physical property values, is measured as a substitute characteristic of the concentration of the reference substance.

  In addition, the urine component concentration measuring device 5 measures the measurement of the concentration of the retained water component, which is the concentration of the specific component of the urine contamination measurement reservoir water, at a position near the bottom of the ball 10 determined in advance as a predetermined position. It is set as the structure which implements a part of stored water as a measuring object. Accordingly, first, the reason why the predetermined position for measuring the vicinity of the bottom of the ball 10 will be described.

  In the urine component concentration measuring device 5, measuring devices such as an absorbance meter used as a reference substance concentration measuring unit after urine mixing and a sugar concentration meter used as a component concentration measuring unit for stored water have a concentration range in which the measurement accuracy can be ensured. That is, it is necessary that the reference substance and the specific component in an amount that falls within this concentration range are contained in the urine contamination measurement reservoir.

  Among these, regarding the concentration of the reference substance, assuming the measurement environment of the urine component concentration measuring device 5 in advance, the concentration change range of the reference substance in the environment is a concentration range that can be measured by a measuring instrument such as a sugar concentration meter. Since it can be set to be within, no particular problem occurs.

  However, regarding the concentration of the specific component, the measurement limit on the low concentration side of the measuring instrument often becomes a problem when the ratio of the amount of raw urine contained in the amount of stored water for measurement is relatively small. Therefore, in order to ensure the measurement, it is necessary to set the measurement water of the measurement device to the urine mixture measurement water at a position where the relative ratio of the raw urine is as high as possible.

  However, the incident position of the excreted urine with respect to the stored water varies depending on the subject, and the amount of excreted urine varies depending on the subject and urination. Therefore, the mixed state of urine in the urine contamination measurement reservoir is not only uneven depending on the measurement position in the entire urine contamination measurement reservoir, but also changes at each measurement even at the same measurement location.

  For this reason, the present inventors conducted a confirmation test of the mixed state of urine in the urine contamination measurement reservoir water by a large number of subjects. According to this, the original urine excreted by the subjects toward the ball is not measured. Since the specific gravity is greater than that of water, it was found that it diffused and stayed toward the bottom of the ball. And this tendency was found to be common even if the subjects were different.

  That is, it has been found that the vicinity of the bottom of the ball is a portion where the concentration of raw urine is relatively high in a relatively short time after urination, and as a result, the concentration of a specific component is likely to be measurable. Therefore, the position in the vicinity of the bottom of the ball is set as a predetermined position for measuring the specific component concentration of urine. Below, the specific structure of the urine component concentration measuring apparatus 5 including other structures is demonstrated.

  As shown in FIG. 3, the urine component concentration measuring device 5 mixes a predetermined amount of methylene blue liquid as a reference substance into water passing through the pipe R <b> 2 that is a water supply means (see FIG. 2), and enters the ball 10. A reference substance mixing device 32 that is a reference substance mixing means that uses the formed water as a measurement water whose concentration of methylene blue liquid is a predetermined concentration, and urine contamination measurement that is a measurement water after mixing raw urine Absorbance meter 36, which is a post-urine-mixed reference material concentration measuring means for measuring absorbance, which is a substitute characteristic of the reference material concentration of the stored water, and the concentration of the components in the stored water, which is the concentration of sugar contained in the stored urine-mixed measured water The sugar concentration meter 38, which is a component concentration measuring means for the stored water, and the measurement water stored in the ball 10 of the toilet body 2a and the urine mixed measurement water (hereinafter referred to as measurement water) are used as balls. 10 to rear cabinet 3 side Aspirated, and a syringe pump 34 for conveying to the absorbance meter 36 and the sugar concentration meter 38, a. Note that the pipe R2 and the reference substance mixing device 32 constitute measuring water supply means.

  The reference substance mixing device 32, the absorbance meter 36, the sugar concentration meter 38, and the syringe pump 34 constitute a measurement unit 30 for measuring the concentration of sugar contained in the raw urine. It is housed and disposed in a back cabinet 3 disposed on the back surface of the toilet unit 2.

  In addition, the urine component concentration measuring device 5 executes various arithmetic processes for controlling the operation of the measuring unit 30, such as functioning as a urine component concentration calculating unit that calculates the concentration of sugar contained in the raw urine. After detection of urine contamination by the control unit 40 described later, electrodes 16c and 16c described later functioning as urine contamination detection means for detecting urine contamination in the measurement reservoir, and electrodes 16c and 16c And a later-described clock unit 41 functioning as elapsed time measuring means for measuring the elapsed time.

  A configuration of the reference substance mixing device 32 as an example of the reference substance mixing unit will be described. FIG. 5 is a schematic explanatory view showing the configuration of the reference substance mixing device 32. As shown in FIGS. 3 and 5, the reference substance mixing device 32 is located at a midway position of the pipe R <b> 2 via the pipe R <b> 4, that is, a position until the water supplied from the water channel switching valve 24 reaches the rim water spouting nozzle 12. It is connected and connected. This reference substance mixing device 32 includes a substantially rectangular box-shaped reference substance storage tank 32a in which the start end of the pipe R4 is immersed in methylene blue liquid as a reference substance stored therein, and a methylene blue liquid in the reference substance storage tank 32a. And a check valve 32c disposed at a predetermined position on the outlet side of the pump 32b in the pipe R4. The check valve 32 c is electrically connected to the control unit 40 and opens and closes according to a control signal from the control unit 40.

  With this configuration, the reference substance mixing device 32 causes the methylene blue liquid stored as the reference substance stored in the reference substance storage tank 32a by the operation of the pump 32b to pass the ball 10 from the pipe R2, that is, the water channel switching valve 24 via the pipe R4. Is supplied so that the stored water becomes a measurement stored water having a predetermined concentration (reference substance concentration before mixing with urine), and the methylene blue liquid is mixed into the water passing through the pipe R2. The water mixed with the methylene blue liquid is discharged from the rim water discharge nozzle 12 into the ball 10 (see FIG. 2), flows down the inner wall of the ball 10 from the upper part to the lower part, and is stored as stored water.

  At this time, since the mixed methylene blue liquid is uniformly mixed with water by the stirring action of the water flow itself while being transferred into the ball 10, the stored methylene blue liquid as a reference substance is uniform. This is a measurement reservoir mixed with a predetermined reference substance concentration before urine mixing. In the case of the present embodiment, since the single-rim type rim water discharge nozzle 12 is used as a water discharge port into the ball 10, this water flow itself is generated by generating a spiral flow when flowing down the ball 10. The stirring action becomes stronger.

  Thus, by mixing the methylene blue liquid as the reference material into the water supplied into the ball 10, the measurement reservoir water in which the cleaning water and the reference material are uniformly mixed is stored in the ball 10. Even when the measurement urine water is created in the urine component concentration measuring device 5 as in the present embodiment, it is necessary to separately provide a means for stirring the measurement basin in order to obtain a uniform mixed state of the reference substance concentration. The configuration of the entire apparatus can be simplified. In addition, since the check valve 32c is provided in the pipe R4, the washing water and the methylene blue liquid flowing through the pipe R2 are reliably prevented from flowing back into the reference material storage tank 32a.

  Here, the concentration of the reference substance in the measurement reservoir water may be any concentration as long as the concentration change of the reference substance in the measurement reservoir water after the urine is mixed can be measured. For example, in a double beam type absorptiometer generally used for measuring absorbance as a substitute for concentration when measuring a change in concentration, the concentration range in which absorbance can be measured with the highest accuracy is 0.4 to 1 in absorbance. It is said that the concentration of the reference substance with respect to the water for measurement is regulated so as to be within this range. When the reference material is methylene blue, the amount is about 5 to 17 μmol / l. Further, by selecting a substance having a cleaning effect as a reference substance, it is possible to provide a toilet cleaning function.

  Further, as will be described later in the present embodiment, when measuring, the measurement value obtained by actually measuring the concentration of the reference substance in the measurement water before urination is used as the reference substance concentration before urine mixing in the present invention. Therefore, the reference substance mixing accuracy of the reference substance mixing apparatus 32 may be within a concentration range in which the absorbance before and after urine mixing is within the concentration range that can be measured by the absorbance meter 36. Therefore, in such a configuration, members that control the concentration of the reference material before urine mixing, such as the pump 32b that determines the mixing amount of the reference material and the water supply valve 22 that determines the amount of stored water, can be used even if the accuracy is not high.

  The configuration of the syringe pump 34 will be described. FIG. 6 is a schematic explanatory view showing the configuration of the syringe pump 34. As shown in FIGS. 3 and 6, the syringe pump 34 is communicatively connected to the jet hole 16 a of the jet water discharge nozzle 16, the absorbance meter 36, and the sugar concentration meter 38. The syringe pump 34 has a substantially cylindrical cylinder 34a and a substantially columnar piston 34b inserted into the inner periphery of the cylinder 34a. The piston 34b moves up and down along the inner peripheral surface of the cylinder 34a by converting the rotational movement of the syringe drive motor 34c into a linear movement by the lead screw mechanism 34d.

  The syringe drive motor 34c is electrically connected to the controller 40, and the controller 40 controls the vertical movement of the piston 34b by driving the syringe drive motor 34c.

  A port 34e having a substantially cylindrical shape smaller in diameter than the cylinder 34a protrudes from the end of the cylinder 34a opposite to the syringe drive motor 34c. The port 34e communicates with the electric rotary valve 35. Yes. The electric rotary valve 35 includes a plurality of ports 35a, 35b, and 35c. The plurality of ports 35a, 35b, and 35c are respectively connected to the absorptiometer 36 and the jet holes 16a of the jet water discharge nozzle 16 via predetermined pipes. And a sugar concentration meter 38.

  Inside the electric rotary valve 35, a rotary valve drive motor (not shown) controlled by the control unit 40 is provided. The control unit 40 drives the rotary valve drive motor, whereby a plurality of ports 35a, The suction or discharge operation of the syringe pump 34 is performed by performing the vertical movement of the piston 34b in a state where any one of 35b and 35c is opened.

  By the way, in this embodiment, the jet hole 16a of the jet water discharge nozzle 16 and the syringe pump 34 are connected (refer FIG.2 and FIG.4). Therefore, when the piston 34b moves downward in the cylinder 34a, a predetermined amount of the measurement water in the ball 10 is collected from the jet hole 16a, and the collected measurement water is used as the port 35b and the port 34e. Is sucked and conveyed into the cylinder 34a.

  On the other hand, when the piston 34b moves upward in the cylinder 34a, the water for measurement and the like sucked into the cylinder 34a is transferred to the absorbance meter 36 and the sugar concentration meter 38 via the port 34e and the port 35a or 35c. It will be discharged and transported.

  Accordingly, in the present embodiment, the zet hole 16a of the above-described zet water spouting nozzle 16 measures a part of the urinary mixed measurement reservoir water in the vicinity of the bottom 10c of the ball 10 around itself by the absorbance meter 36 and the sugar concentration meter 38. It is designed to be collected as a target measurement sample.

  In other words, in the present embodiment, the jet hole 16a, which is a toilet flushing water discharge port, is used as an intake port for collecting urine contamination measurement reservoir water. The measurement sample of urine contamination measurement water collected from the zet hole 16 a is conveyed to the absorbance meter 36 and the sugar concentration meter 38 via the syringe pump 34.

  That is, the jet water discharge nozzle 16 and the syringe pump 34 function as a measurement sample collecting means in the present invention, and the jet hole 16a which is a toilet flushing water discharge port uses a part of the urine contamination measurement water storage as a measurement target. In order to function as an inlet when the measurement sample is collected, it corresponds to the opening provided at the bottom of the ball in the present invention.

  Therefore, it is possible to reliably collect the urine-mixing measurement reservoir water in the vicinity of the bottom 10c of the ball 10 that often contains a measurement target substance having a concentration suitable for measurement by the sugar concentration meter 38 through the jet hole 16a. Of course, instead of the jet hole 16a of the jet water discharge nozzle 16, a separate opening (not shown) is provided in the bottom 10c of the ball 10, and this opening may be used as an intake for collecting urine mixed measurement water. Good.

  As described above, since the existing jet hole 16a is used as the opening for collecting the measurement sample of the measurement sample collecting means, it is not necessary to separately provide an opening for collecting the sample, thereby simplifying the apparatus configuration. it can.

  Further, a pair of electrodes 16c and 16c are provided on the inner peripheral surface of the jet water discharge nozzle 16 and in the vicinity of the jet hole 16a (see FIG. 4) with the tips facing each other. The electrodes 16c and 16c are electrically connected to the control unit 40, and are set so that a weak current flows from the control unit 40 between the electrodes 16c and 16c. The raw urine is mixed into the measurement water stored in the ball 10 and reaches between the electrodes 16c and 16c installed at the bottom, whereby the resistance value between the pair of electrodes 16c and 16c using the reached raw urine as a conductor. Changes, the control unit 40 detects a change in the potential between the electrodes 16c and 16c due to the change in resistance value, and the measurement reservoir in the vicinity of the jet water discharge nozzle 16, that is, in the vicinity of the bottom of the ball 10 in the present invention. It is detected that the raw urine is mixed into the urine mixture measurement water. Therefore, the electrodes 16c and 16c function as urine contamination detection means in the present invention. Based on the detection of the raw urine by the control unit 40, the timing of the suction or discharge operation of the syringe pump 34 is controlled. Thus, by providing the urine mixing detection means in the existing jet water discharge nozzle 16, it is not necessary to separately provide a urine detection sensor or the like, and the apparatus configuration can be simplified.

  Next, the configuration of the absorptiometer 36 used in the present embodiment will be described as an example of the post-urine reference substance concentration measuring means in the present invention. FIG. 7 is a schematic explanatory view showing the configuration of the absorbance meter 36. The absorptiometer 36 measures the absorbance of the measurement water stored and discharged from the syringe pump 34. Here, the absorbance is a scale indicating the absorption intensity of a substance with respect to light of a specific wavelength. As shown in FIGS. 3 and 7, the absorptiometer 36 includes a sample cell 36a that is connected to the syringe pump 34 and stores measurement water discharged and conveyed from the syringe pump 34, and the absorbance of the raw urine and methylene blue. A light source 36b that irradiates the measurement light in the sample cell 36a with a substantially parallel light as the irradiation light F1, and a sample cell disposed at a position facing the light source 36b across the sample cell 36a. And an optical sensor 36c that receives the transmitted light F2 that has passed through the measurement water stored in 36a.

  The light source 36b may be any light source that emits light in a wavelength band that can measure the change in absorbance of the reference substance. Examples of the light source 36b include a gas laser such as an Ar laser, a semiconductor laser, a halogen lamp, and an LED. The sample cell 36a is formed from a translucent material such as glass. The light source 36b is electrically connected to the control unit 40, and the control unit 40 controls turning on and off of the light source 36b. The optical sensor 36c is also electrically connected to the control unit 40. The control unit 40 receives the light reception signal of the optical sensor 36c, and the intensity of the irradiation light F1 and the intensity of the transmitted light F2 attenuated from the irradiation light F1. Based on the above, the absorbance of the measurement water is calculated.

  Further, in the control unit 40, the dilution rate of the raw urine is calculated based on the absorbance of the measurement water stored in the absorbance meter 36. The measurement of the absorbance of measurement water or the like by the absorbance meter 36 will be specifically described with reference to FIG. FIG. 8 is an absorbance spectrum diagram showing an example of the relationship between the absorbance of the measurement water stored in the absorbance meter 36 and the wavelength. In FIG. 8, one absorbance spectrum indicated by a broken line is an absorbance spectrum of measurement reservoir water, and two absorbance spectra indicated by a solid line are absorbance spectra of urine-mixed measurement reservoir water. As shown in FIG. 8, in the absorbance spectrum of the urine contamination measurement water indicated by the solid line, the wavelength band X1 in which the absorbance of the raw urine exhibits a peak value and the wavelength band in which the absorbance of the reference substance methylene blue exhibits the peak value. It exists in a wavelength band different from X2, and the raw urine and methylene blue are clearly distinguished.

  In this way, since the raw urine and methylene blue are clearly distinguished by the wavelength band in the urine-mixed measurement water, even if the raw urine is mixed into the measurement water, the absorptiometer 36 uses the measurement water. By measuring the absorbance of water and the absorbance of urine contamination measurement water and comparing both absorbances, the change in absorbance of the reference substance before and after urine contamination is measured independently of the absorbance of raw urine. That is, as shown in FIG. 8, the absorbance S0 of methylene blue contained in the measurement reservoir is lowered to the absorbance S1 of methylene blue contained in the urine contamination measurement reservoir due to the mixing of the raw urine. This change in absorbance is measured by an absorptiometer 36.

  As described above, in this embodiment, as the post-urine contamination concentration measuring means in the present invention, an absorptiometer that measures the absorbance, which is an example of the concentration substitute characteristic, is employed. The principle for obtaining the concentration of the specific substance contained will be described.

  The absorbance measurement employed in the present embodiment is one of the concentration measurement methods used conventionally, and the principle thereof is as follows.

  That is, the specific substance concentration Q of the solution mixed with the specific substance is expressed by the following [Equation 9] where the absorbance S of the solution, the extinction coefficient α of the specific substance, and the optical path length L are expressed.

Q = αS / L (Formula 9)
Here, since the extinction coefficient α is determined by the specific substance and the optical path length L is also determined by the optical path configuration of the measuring device, the absorbance S of the solution and the specific substance concentration Q are in a directly proportional relationship. That is, the above-described relationship of [Equation 8] is established between the substance concentration Q of the solution and the absorbance S of the solution. Therefore, as described above, it can be seen that the absorbance S can be used as a substitute characteristic of the specific substance concentration Q of the solution in the present invention.

  Therefore, in the present embodiment, the measurement solution in the above description of the measurement principle is the measurement water, the reference material is the methylene blue solution, and the specific substance is sugar (urine sugar), and the methylene blue solution in the measurement water before and after mixing in the raw urine. As a substitute for concentration, the sugar concentration of urine (original urine) is calculated from the absorbance before and after mixing with the original urine.

  That is, the dilution rate Ds of the measurement water stored in the methylene blue due to the urine contamination at this time is the measurement after the urine contamination with the absorbance of the methylene blue solution contained in the measurement water before the urine contamination as S0. Assuming that the absorbance of the methylene blue liquid contained in the urine contamination measurement reservoir water, which is the reservoir water, is S1, the following [Expression 10] is applied by applying [Expression 9] to [Expression 6].

Ds = S1 / S0 (Formula 10)
Since the dilution rate Dn of the raw urine from the dilution rate Ds of the measurement reservoir water can be expressed by the following [Equation 11] because the above-mentioned [Equation 4] can be applied if these values are at the same position. Is done.

Dn = 1−S1 / S0 (Formula 11)
Therefore, by applying the dilution rate Dn of the raw urine to the dilution rate Db of the solution to be tested in the above-mentioned [Equation 3], the concentration of the specific component in the raw urine to be obtained is the measured substance concentration in the following [Equation 12]. so that the can be calculated as Q _0.

Q ₀ = Q ₁ / (1-S1 / S0) (Formula 12)
That is, a measurement reservoir absorbance S0 methylene blue solution contained in the water, the concentration to Q ₁ specific component at an arbitrary position of the reservoir water urine contamination measurement, the methylene blue absorbance S1 Prefecture, measured using [Expression 12] The urinary component concentration Q _0, which is the concentration of the specific component of the original urine, is calculated. [Equation 12] is stored in advance in a ROM 44 (FIG. 3) of the control unit 40 described later.

  In this embodiment, in order to calculate the sugar concentration of the raw urine, the absorbance was measured using the absorptiometer 36, but the fluorescence intensity that satisfies the above-mentioned [Equation 8] is used in the same manner as the absorbance. As an alternative, a fluorescence intensity meter (not shown) may be used instead of the absorbance meter 36 to measure the fluorescence intensity of the measurement water. Therefore, the case where the fluorescence intensity is used as a substitute characteristic of concentration will be described here. In addition, about the structure of a fluorescence intensity meter, since the existing structure is employ | adopted, description is abbreviate | omitted here.

  FIG. 9 is a fluorescence intensity spectrum diagram showing an example of the relationship between the fluorescence intensity and the wavelength of the urine contamination measurement reservoir water measured by the fluorescence intensity meter. The two contour lines shown in FIG. 9 indicate the fluorescence of the original urine contained in the urinary mixed measurement reservoir when the transmitted light having the fluorescence wavelength on the horizontal axis is measured by irradiating the irradiation light having the vertical excitation wavelength. The intensity and the fluorescence intensity of the reference substance are respectively shown, and the height of the contour line indicates the difference in fluorescence intensity. As the reference substance here, any substance can be used as long as it has an excitation wavelength and a fluorescence wavelength in a wavelength band different from that of raw urine, and can distinguish and measure the fluorescence intensity of the reference substance and the fluorescence intensity of the raw urine. For example, a fluorescent reagent Cy5 having an excitation wavelength of 650 nm and a fluorescence wavelength of 670 nm can be used.

As shown in FIG. 9, when measuring the fluorescence intensity of the urine contamination measurement reservoir water, the change in the contour line of Cy5, that is, the change in the fluorescence intensity of Cy5, which is the reference substance, is the fluorescence intensity of the original urine. It can be measured independently. The fluorescence intensity has a certain relationship with the concentration of Cy5, and the above-described [Expression 8] is established. Therefore, the fluorescence intensity of Cy5 contained in the measurement reservoir and the fluorescence intensity of Cy5 contained in the urine contamination measurement reservoir are measured by a fluorescence intensity meter. Therefore, the measured substance concentration Q ₀ can be obtained using [Equation 12].

  Note that the numerical values to be substituted for S0 and S1 in [Equation 11], that is, the physical property values that can be used as a substitute characteristic of the reference substance concentration such as measurement water are not limited to the absorbance and fluorescence intensity described above, but are measured. Any physical property value can be used as long as the reference substance and raw urine in the stored water can be discriminated and the relationship with the concentration satisfies the above-described [Equation 8]. As the physical property values, for example, when there is a marked difference between the measured values of the reference substance and the raw urine, for example, conductivity, specific gravity, osmotic pressure, refractive index, etc. can be applied, and those values are measured. Thus, the specific component concentration can be calculated from [Equation 12].

  In the present embodiment, the sugar concentration meter 38, which is an example of the component concentration measuring unit for the stored water, is connected to the syringe pump 34 and is discharged / conveyed from the syringe pump 34. Measure. The sugar concentration meter 38 uses glucose oxidase (GOD), which is an enzyme that specifically oxidizes glucose from among many components in raw urine as a probe, and hydrogen peroxide water as a transducer, and detects existing detection. The glucose concentration is measured in principle. Since the known glucose concentration detection principle in the sugar concentration meter 38 is used, the description thereof is omitted here. The sugar concentration meter 38 is electrically connected to the control unit 40, and the control unit 40 receives the output signal transmitted by the sugar concentration meter 38 as the sugar concentration of the urine contamination measurement reservoir water.

  As shown in FIG. 3, the control unit 40 controls the urine component concentration measuring apparatus 5 as a whole, and includes a CPU 42 as a central processing unit that performs various calculations and controls, and a ROM 44 that stores various control programs and the like. And a RAM 46 used as a working memory for the CPU 42.

  The CPU 42 is connected to a ROM 44, a RAM 46, and the like, and has a function of executing various processes in accordance with various programs stored in the ROM 44. The ROM 44 stores a program for controlling the operation of the urine component concentration measuring device 5 by the CPU 42. The RAM 46 has a function of storing various data as a temporary storage area of the CPU 42.

  The control unit 40 includes a measurement control circuit 50 and a communication unit 52.

  The measurement control circuit 50 is connected to the measurement unit 30, and in accordance with a control signal transmitted from the CPU 42, the reference substance mixing device 32 mixes the reference substance into the cleaning water, and the syringe pump 34 sucks the measurement reservoir water and the like. Control various operations of the measurement unit 30 such as transfer, measurement by the absorbance meter 36 and sugar concentration meter 38, and the like.

  The communication means 52 transmits and receives various information such as operation information and measurement results between the operation / display unit 4 and the CPU 42.

  Further, the control unit 40 is electrically connected to the toilet control unit 21 of the toilet unit 2, and performs various operations as a normal toilet such as filth washing of the toilet unit 2 and transmission / reception of various data as a urine component measurement device. Is possible. For example, when the waste cleaning process of the toilet unit 2 is executed, the control unit 40 receives a signal to that effect from the toilet control unit 21.

  In the control unit 40 configured as described above, the CPU 42 reads out and executes various programs such as the urinary component concentration calculation program stored in the ROM 44, thereby determining the concentration of the components in the stored water measured by the sugar concentration meter 38. Functions as a urine component concentration calculating means for calculating the concentration of sugar contained in the raw urine based on the above.

  Here, calculation of the concentration of sugar (urine sugar) contained in the raw urine by the urine component concentration calculating means will be described.

By applying [Equation 12] as the measured substance concentration in [Equation 12] described above, the urine that is the concentration of the component in the stored water measured by the sugar concentration meter 38 at an arbitrary position in the urine contamination measurement stored water. When the sugar concentration U1 and analyte concentration Q _1, concentration U0 of urine sugar contained in Although primary urine is represented by the following [equation 13].

U0 = U1 / (1-S1 / S0) (Formula 13)
That is, by substituting the absorbances S0 and S1 before and after urine contamination of the measurement water and the urine sugar concentration U1 measured by the sugar concentration meter 38 into [Equation 13], the urine component concentration calculating means The sugar concentration U0 contained in the urine is calculated. [Equation 13] is stored in the ROM 44 in advance.

  By the way, in this embodiment, for example, it does not have a special configuration that stirs urine contamination measurement water. Therefore, depending on the position of the urine contamination measurement water stored in the ball, the sugar concentration, which is the concentration of the components in the stored water, may be lower than the lower limit of the measurable range of the sugar concentration meter used as the concentration measurement component of the stored water. Is also possible.

  That is, in this embodiment, the sugar concentration is determined by the natural mixing state of the measurement water and the raw urine at a predetermined position. Therefore, as described above, the sugar concentration also depends on the urination state of the subject (such as the urination position and the amount of urination). Although it changes, even in a single measurement, it changes over time even after the subject urinates. Therefore, depending on the timing of measurement, it was assumed that the lower limit of the measurable range may be exceeded.

  Therefore, the present inventors performed various confirmation tests in order to investigate the sugar concentration in the urine contamination measurement water in this embodiment. The following are typical examples of the confirmation test.

  FIG. 10 shows a case where a NaCl solution having a predetermined concentration prepared so that characteristics such as specific gravity are the same as that of urine in order to simulate urine is poured (mixed) from a predetermined position into the stored water stored in the ball 10. The result of measuring the temporal change of the NaCl concentration in the stored water in the ball is shown for each position in the stored water. Here, the bottom 10c and top 10b of the ball 10 as positions near the bottom of the ball, which is a predetermined position for measuring the concentration of the components in the stored water in the present invention, are representative measurement positions, and the NaCl concentration at that position is temporally measured. The transition is schematically shown.

That is, as shown in FIG. 10, after the NaCl solution is poured into the stored water (t ₀ ), the NaCl concentration in the stored water is reached with the arrival of the NaCl solution at both the bottom 10 c and the top 10 b of the ball 10. Rises rapidly and reaches peak values (Db, Dc), and then the NaCl concentration becomes stable at a constant value. In this case, the NaCl concentration increase start time (t ₁ ) of the bottom 10c is delayed from the NaCl concentration increase start time of the upper portion 10b. This is because the NaCl solution in the stored water moves from the upper portion 10b of the ball 10 to the bottom portion 10c. This is thought to be due to the time difference required for this.

  At this time, the peak value (Dc) of the NaCl concentration change in the vicinity of the bottom portion 10c of the ball 10 indicated by the solid line is larger than the peak value (Db) of the NaCl concentration change in the upper portion 10b of the ball 10 indicated by the broken line. Also, the stable concentration after the peak is larger near the bottom 10c.

  In other words, in the urine contamination measurement stored water stored in the ball 10, it means that the amount of urine contained relatively increases in the vicinity of the bottom 10 c of the ball 10. This is because the specific gravity of the urine is larger than the specific gravity of the stored water, and the urine flows down in the stored urine mixed measurement water and stays in the vicinity of the bottom 10 c of the ball 10.

  Therefore, in particular, in the present embodiment, the absorbance meter 36 as the physical property value measuring unit after urine mixing and the concentration meter 38 as the component concentration measuring unit for the stored water are used to store the urinary mixing measurement water near the bottom 10c of the ball 10. Each is a measurement target.

  As a result, even if the mixing of the raw urine in the urine-mixed measurement urine is uneven due to the position of the urine to be collected and the amount of urine excreted, the raw material having a higher specific gravity than the urine The measurement target can be urine contamination measuring water in the vicinity of the bottom 10c of the ball 10, which is likely to retain urine and often contains the amount of raw urine necessary for measurement by the absorbance meter 36 and the concentration meter 38.

  Further, in FIG. 10, the lower limit of the measurement range of the sugar concentration meter 38 schematically indicated by the NaCl concentration (Dl) also in the vicinity of the bottom of the ball 10 as the measurement position by the sugar concentration meter 38 in the present embodiment. There is a time when the concentration becomes less than the concentration, that is, depending on the measurement timing, the sugar concentration below the lower limit of the general measurement accuracy guarantee range of the sugar concentration meter 38 which is a urine component concentration measuring means It has been found that this may occur.

  In other words, in order to perform an appropriate sugar concentration measurement by the sugar concentration meter 38 at a fixed position as in this embodiment, it is not sufficient to select a predetermined position, and an appropriate measurement timing (time) is set. I found it necessary to set. Therefore, when various additional tests were conducted, it was found that the sugar concentration change at the predetermined position fluctuated to a degree that cannot be ignored due to variations in the urination position of the subject and the amount of urination for each measurement.

  Therefore, in the present embodiment, as described above, the position near the bottom 10c of the ball 10 is set as a predetermined position for the measurement position by the sugar concentration meter 38, but the bottom of the ball 10 is actually measured when it is measured. A urine contamination detecting means for detecting that the raw urine has reached and mixed in the measurement reservoir in the vicinity of 10c, and an elapsed time measuring means for measuring the elapsed time from the detection time. It is configured to determine an appropriate time for measurement. The concept of setting the measurement time will be described below with reference to FIG.

In FIG. 10, the time when the NaCl solution is poured into the stored water is t _0, and the NaCl concentration in the stored water near the bottom 10c of the ball 10 starts to rise from time t ₁ and exceeds the measurement lower limit concentration Dl at time t _2. Then, a time t ₂ later becomes when to implement the concentration measurement, and the measurement lower limit concentration here the time required to over the Dl measurement wait limit time _{ΔT (= t 2 -t 1)} . That is, in the bottom portion 10c near the position of the ball 10, if ΔT elapsed from the time t _1, so that has a concentration measurable NaCl concentration state by sugar concentration meter 38.

  Therefore, since urine simulated by the NaCl solution also shows the same behavior in the measurement water, the present embodiment for measuring sugar (urine sugar) as the specific component concentration in the measurement water also uses urine in advance. A time corresponding to this ΔT in the case of urine sugar is obtained by conducting an experiment assuming the urination situation of the urine, and a time obtained by adding an appropriate margin time considering the variation is set as a predetermined measurement waiting time Td. ing.

  That is, in this embodiment, although details will be described later, the elapsed time after the urine contamination detection means detects the urine contamination is measured by the elapsed time measurement means, and this elapsed time is measured as a predetermined time. When the waiting time Td is reached, it is determined that the predetermined mixed state in the present invention has been reached, and urine component concentration measurement is started. Therefore, it is possible to obtain a more reliable and highly accurate measurement result for any subject.

[1.4 Operation of urine component concentration measurement device]
An example of the operation of the urine component concentration measuring apparatus 5 according to the first embodiment configured as described above will be described in detail with reference to FIG. FIG. 11 is a flowchart showing the operation of the urine component concentration measuring apparatus 5.

  As shown in FIG. 11, first, in step S1, when the power of the urine component concentration measuring device 5 is turned on, the CPU 42 of the urine component concentration measuring device 5 initializes access permission and work area reservation for the ROM 44, RAM 46, etc. The initial setting operation such as performing is performed, each program stored in the ROM 44 is set to the execution state, and various functions are operated. In this step S1, methylene blue liquid by the reference substance mixing process described later in step S13 at the previous operation is mixed in the stored water stored in the ball 10 of the toilet unit 2, and the measurement stored water is It is assumed that it is stored in the ball 10. When this process ends, the CPU 42 shifts the process to step S2.

  In step S2, the CPU 42 determines whether or not the measurement switch (not shown) of the operation / display unit 4 has been pressed by the subject, and determines that the measurement switch has been pressed (step S2: Yes), the process is performed. If it transfers to S3 and it determines with the measurement switch not being pressed down (step S2: No), a process will transfer to step S12.

  In step S <b> 3, the CPU 42 executes a measurement accumulated water suction process. In this process, the CPU 42 operates the syringe pump 34 and sucks a predetermined amount of measurement water in the ball 10 from the jet hole 16 a of the jet water discharge nozzle 16, and directs this measurement water to the absorptiometer 36. Eject and transport. When this process ends, the CPU 42 shifts the process to step S4.

  In step S4, the CPU 42 executes an absorbance measurement process. In this process, the CPU 42 operates the absorbance meter 36 and measures the absorbance of the measurement water stored in the ball 10 to the absorbance meter 36 in step S3. As a result, the absorbance of methylene blue contained in the measurement water (for example, S0 shown in FIG. 8) is measured, and this absorbance of methylene blue is stored in a predetermined area of the RAM 46 as the urine contamination reference substance concentration in the present invention. . When this process ends, the CPU 42 shifts the process to step S5.

  In step S <b> 5, the CPU 42 determines whether or not urine is detected in the vicinity of the bottom 10 c, which is a predetermined position in the present invention, in the ball 10. Specifically, when the raw urine excreted by the subject and thrown into the measurement reservoir is diffused in the urine contamination measurement reservoir and reaches the jet water discharge nozzle 16 provided at the bottom 10c of the ball 10, the original urine Since the conductivity is higher than that of the measurement water, the resistance value between the pair of electrodes 16c and 16c provided at the tip of the water discharge nozzle 16 changes (decreases). It is assumed that the CPU 42 detects this change in resistance value, determines that urine has reached the tip of the water discharge nozzle 16, and detects urine.

  If it is determined in step S5 that the original urine has reached the position of the zet hole 16a within the ball 10 and urine has been detected (step S5: Yes), the CPU 42 starts the timekeeping of the clock unit 41 and performs the processing step. The process proceeds to S6. On the other hand, if it is determined in step S5 that urine is not detected (step S5: No), the CPU 42 repeats this process until urine is detected.

  In step S6, the CPU 42 determines whether or not the time measured by the clock unit 41 has reached the predetermined time Td. If the CPU 42 determines that the predetermined time Td has elapsed (step S6: Yes), the process proceeds to step S6. Migrate to On the other hand, if it is determined in step S6 that the predetermined time Td has not elapsed (step S6: No), this process is repeated until the predetermined time Td has elapsed.

  Thus, in step S6, when the elapsed time is monitored and the measurement standby time Td elapses, the CPU 42 determines that the urine mixing state in the vicinity of the bottom 10c of the ball 10 in the urine contamination measurement reservoir is in the present invention. It is determined that a predetermined mixed state has been reached. At this time, the CPU 42 functions as a urine mixed state determination unit.

  In step S <b> 7, the CPU 42 executes a urine contamination measurement accumulated water suction process. In this process, the CPU 42 operates the syringe pump 34 to suck a predetermined amount of the urine contamination measurement water in the ball 10 from the jet hole 16a of the jet water discharge nozzle 16, and this urine contamination measurement water is absorbed by an absorptiometer. 36 and the sugar concentration meter 38 are discharged and conveyed, respectively. As a result of this processing, a part of the urine contamination measuring water near the bottom in the ball 10 is collected as a measurement sample and transferred to the outside of the ball 10. When this process ends, the CPU 42 shifts the process to step S8.

  In step S8, the CPU 42 executes an absorbance measurement process. In this process, the CPU 42 activates the absorbance meter 36, and measures the absorbance of the measurement sample of the urine-mixing measurement water stored in the ball 10 in step S7. As a result, the absorbance of methylene blue contained in the urine contamination measurement reservoir water (for example, S1 shown in FIG. 8) is measured, and the absorbance of this methylene blue is stored in a predetermined area of the RAM 46 as the urine contamination reference substance concentration in the present invention. Is done. When this process ends, the CPU 42 shifts the process to step S9.

  In step S9, the CPU 42 executes density measurement processing. In this process, the CPU 42 activates the sugar concentration meter 38, measures the concentration of sugar contained in the measurement sample in the urine contamination measurement water stored in the ball 10 in step S6, and stores it in a predetermined area of the RAM 46. . When this process ends, the CPU 42 shifts the process to step S10.

  In step S10, the CPU 42 executes a urine component concentration calculation process. In this process, the CPU 42 includes the urine contamination reference substance concentration and the urine contamination reference substance concentration respectively stored in the RAM 46 in step S4 and step S7, and the urine contamination measurement stored water stored in the RAM 46 in step S9. The concentration of sugar contained in the raw urine is calculated using the above-mentioned [Equation 13] based on the concentration of sugar. When this process ends, the CPU 42 shifts the process to step S11.

  In step S11, the CPU 42 executes a result display process. In this process, the CPU 42 displays the sugar concentration calculated in step S10 on the operation / display unit 4 in a predetermined format. When this process ends, the CPU 42 shifts the process to step S12.

  In step S12, the CPU 42 determines whether or not the cleaning process signal indicating that the filth cleaning process is being executed is received from the toilet control unit 21 of the toilet unit 2, and determines that the cleaning process signal has been received (step S12). When the process proceeds to step S13 and it is determined that the cleaning process signal has not been received (step S12: No), the process of step S12 is repeated until the cleaning process signal is received.

  In step S13, the CPU 42 executes a reference substance mixing process. In this process, when receiving a signal from the toilet control unit 21 of the toilet unit 2 that the zet cleaning of the jet water spouting nozzle 16 in the waste cleaning process of the toilet unit 2 in step S13 has been completed, the CPU 42 performs the reference substance mixing device 32. The methylene blue liquid is supplied and mixed in the wash water at a midway position of the pipe R2, that is, at a position before the wash water supplied from the water channel switching valve 24 reaches the rim water spouting nozzle 12. As a result, the wash water mixed with the methylene blue liquid is discharged from the rim water discharge nozzle 12 into the ball 10 and flows down while spirally turning the inner wall of the ball 10 from the upper part to the lower part. By this spiral flow, the cleaning water and the methylene blue liquid are uniformly mixed to form the measurement water, and the measurement water in the ball 10 at the next operation is prepared. When this process ends, the CPU 42 shifts the process to step S14.

  In step S14, the CPU 42 determines whether or not the power of the urine component concentration measuring device 5 has been turned off. If it is determined that the power has been turned off (step S15: Yes), the operation of the urine component concentration measuring device 5 is performed. If it stops and determines that the power is not turned off (step S15: No), the process returns to step S2, and the processes from step S2 are repeatedly executed.

  As described above, according to the urine component concentration measuring apparatus 5 according to the first embodiment of the present invention, the reference substance concentration at the position where the urine sugar concentration in the urine contamination measurement reservoir water is measured is measured together with the urine sugar concentration. Therefore, the concentration of urine components contained in the raw urine is calculated in consideration of the dilution ratio of the raw urine in the portion where the urine component concentration is measured. This makes it possible to use a toilet bowl that is difficult to handle as a urine receiving container for receiving urine. For this reason, even women and children can easily collect urine, and the reliability of measurement can be improved.

  In the present embodiment, the CPU 42 as the urine mixing determination unit determines that the mixing state of the urine in the urine mixed measurement running water is the predetermined mixing when the elapsed time counted by the clock unit 41 has exceeded a predetermined time. Although the case where it is determined that the state has been reached has been shown, the urine mixed state determination means is not limited to this.

  In other words, the CPU 42 continuously conveys the urine contamination measurement reservoir water from the ball 10 to the absorbance meter 36 via the syringe pump 34 at the timing when the subject starts urination, and the conveyed urine contamination measurement reservoir is conveyed. The absorbance of the water reference substance may be continuously measured by the absorptiometer 36, and it may be determined that a predetermined mixed state has been reached when the absorbance falls below a predetermined value.

  That is, the absorbance of the reference substance contained in the urine contamination measurement reservoir water decreases as the amount of urine contained in the urine contamination measurement reservoir water increases (see FIG. 8). Therefore, when the relationship between the absorbance of the reference substance and the concentration of the specific component in the urine when the amount of urine in the urine measurement measurement water is changed in advance is experimentally determined, the concentration of the specific component exceeds a certain value. By using the absorbance of the reference substance as a determination criterion for the predetermined mixing state, it can be determined that the mixing state of the urine in the urine contamination measurement reservoir has reached the predetermined mixing state.

  Further, the CPU 42 is provided with a urine volume measuring means (not shown) for measuring the urine volume mixed in the ball 10, and when the urine volume mixed in the ball 10 exceeds a predetermined amount, urine mixing It may be determined that the mixed state of urine in the measurement water has reached a predetermined mixed state. In this case, the urine volume measuring means is separately provided with a water pressure sensor (not shown) constituting a urine volume measuring means that is connected to the bottom 10c of the ball 10 in a water channel with the accumulated water in the ball 10, and this water pressure sensor Based on the detected water pressure signal, the water level of the urine contamination measurement water stored in the ball 10 is measured, and the level of the measurement urine water before the urine contamination and the urine contamination measurement water retention after the urine contamination. The amount of mixed urine is calculated based on the water level.

(Modification of the first embodiment)
Next, a modification of the first embodiment will be described below. The modification of the first embodiment is different from the urine component concentration measuring device 5 according to the first embodiment only in that the zet water discharge nozzle 16 has a function of reducing the amount of stored water for reducing the amount of stored water for measurement. Since other configurations are the same, description thereof will be omitted below.

  In this modification, before starting each measurement by the absorbance meter 36 as the reference substance concentration measuring means after urine mixing and the sugar concentration meter 38 as the component concentration measuring means of the stored water, the reservoir water for measurement is measured by the jet water discharge nozzle 16. By reducing the amount, the amount of urine is increased relative to the amount of water for measurement.

  That is, in the configuration of the measurement reservoir water supply means using the normal toilet bowl 10 and the washing water supply means used in the present modification as in the first embodiment, the measurement water stored in the ball 10 is used. Since the amount of accumulated water is the so-called overflow water level of the toilet, it must always be a constant amount.

  On the other hand, when the subject is a male, it is assumed that urination is performed while standing while standing, rather than urinating while sitting on the toilet seat 6. In this case, the flow rate of urine at the incident position on the measurement reservoir is larger than that at the sitting position, and the directivity of the diffusion rate of urine in the incident urine mixed measurement reservoir becomes stronger in the incident direction. Therefore, depending on the incident state of urine, the amount of urine that reaches the vicinity of the bottom 10c of the ball 10 is reduced due to the influence of this diffusion directivity. The proportion of urine contained in the stored water may be relatively small.

  Also, depending on the subject, the amount of urine to be excreted is small, and the amount of urine reaching the vicinity of the bottom 10c of the ball 10 may be small compared to a standard subject. In such a case, even if the urine contamination measurement water in the vicinity of the bottom 10c of the ball 10 is used as a measurement target of the sugar concentration meter 38, the ratio of urine to the measurement water is reduced. Therefore, there is a possibility that the concentration of the urine component to be measured is less than the concentration necessary for measurement and accurate measurement cannot be performed.

  Therefore, in the modified example, by reducing the amount of the measurement reservoir water by the jet water discharge nozzle 16, the urine amount relative to the measurement reservoir water is relatively increased to increase the concentration of the urine component as the measurement target substance. It is composed.

  The processing operation of the modified example configured as described above is substantially the same as the processing operation from step S1 to step S14 in the first embodiment shown in FIG. Therefore, only processing operations different from the processing operations in the first embodiment will be described below.

  In the modified example, as shown in FIG. 11, when the CPU 42 determines that the measurement switch of the operation / display unit 4 has been pressed by the subject (step S2: Yes), before the process proceeds to step S3, Perform weight loss processing.

  In the stored water reduction process, the CPU 42 sends a control signal to the effect that the washing water is jetted from the jet water discharge nozzle 16 to the toilet control unit 21 and operates the water channel switching valve 24 via the control of the toilet control unit 21 to perform piping. Switch the flow path to R3.

  When the flow path is switched to the pipe R <b> 3, the cleaning water is jetted from the jet water discharge nozzle 16 for a predetermined time that is shorter than that during normal toilet flushing, and this cleaning water is used as the measurement water stored in the ball 10. A part is pushed out and discharged to the trap drain 14b. As shown in FIG. 12, the water level of the measurement reservoir after the washing water is ejected drops from the full water level of the ball 10 to a predetermined measurement start water level 18a that does not fall below the sealed water level 18b. As a result, the amount of measurement reservoir water is reduced by the amount of measurement reservoir water between the full water level and the predetermined measurement start water level 18a.

  When these series of stored water reduction processes are completed, the CPU 42 shifts the process to step S3 shown in FIG.

  Thus, in the measurement, the amount of stored water before the start of urination of the subject is reduced, and as a result of the shallow water level, the physical relationship between the vicinity of the bottom 10c of the ball 10 that is the measurement site and the landing point of urination Therefore, the time required for urine to reach the vicinity of the bottom 10c is shortened, and the amount to be reached increases.

  Accordingly, the amount of urine in the vicinity of the bottom 10c of the ball 10 increases within the same elapsed time as compared with the case where the water does not decrease, and the concentration increases. Since the concentration level is relatively higher than the concentration level required for the measurement by the sugar concentration meter 38 in a relatively short time, it is possible to shorten the measurement time for one measurement and to realize reliable measurement.

  In the present embodiment, the water level at the time of water reduction is set to a level that does not fall below the sealed water level 18b. This is to prevent the backflow of the sewage odor in the toilet room, and a measure for preventing this backflow. In an environment where there is no fear of backflow, such as an environment where the water is separately applied, it is possible to set the water level to an arbitrary level within a range that can be measured by the post-urine mixed reference substance concentration measuring means having a sealed water level of 18b or less.

[2. Second Embodiment]
Next, a urine component concentration measuring apparatus according to the second embodiment of the present invention will be described with reference to FIG. FIG. 13: is a sectional side view of the toilet part which the toilet device provided with the urine component concentration measuring apparatus which concerns on 2nd Embodiment of this invention has. The urine component concentration measuring apparatus according to the second embodiment of the present invention includes a cleaning water storage tank 60 that stores cleaning water, and includes a reference substance mixing apparatus 232 instead of the reference substance mixing apparatus 32. A point is provided with a sample collection mechanism 80 functioning as a sample collection unit instead of the zet hole 16a of the jet water discharge nozzle 16, and functions as a urine detection unit instead of the pair of electrodes 16c and 16c of the jet water discharge nozzle 16. This is different from the first embodiment in that a urination sound sensor (not shown) is provided. Accordingly, only the points of the present embodiment that are different from the first embodiment will be described here, and the same components are denoted by the same reference numerals and the description thereof will be omitted.

  As shown in FIG. 13, the urine component concentration measuring apparatus 200 according to the second embodiment of the present invention is connected to a predetermined water source, and a wash water storage tank 60 that stores wash water supplied from the water source, A sample collection mechanism 80 serving as a sample collection unit that is connected to the syringe pump 34 and is inserted into the water 18 stored in the ball 10 at the tip thereof, and disposed at a predetermined location of the toilet unit 2 and connected to the control unit 40. And a urination sound sensor (not shown).

  The washing water storage tank 60 has a tank main body 62 communicated with the rim water spouting nozzle 12 via a pipe R202, and a hand-washing water discharge pipe 64 disposed on the tank main body 62 and connected to a predetermined water source. A reference substance mixing device 232 serving as a reference substance mixing means is disposed below the hand-washing water discharge pipe 64 and on the upper end surface of the tank main body 62.

  The reference substance mixing device 232 includes a funnel-shaped container 66 having an upper portion opened toward the hand-washing water discharge pipe 64 and a lower portion communicating with the inside of the tank main body 62, and methylene blue contained in the container 66 as a reference substance. And a water-soluble solid material 68.

  With this configuration, the washing water discharged from the hand-washing water discharge pipe 64 flows down toward the container 66, and the methylene blue liquid is eluted from the solid material 68 in the container 66 by this washing water and flows down into the tank body 62. As a result, cleaning water (hereinafter referred to as “reserved water”) in which the methylene blue liquid is mixed is stored in the tank body 62. The water stored in the tank main body 62 in which the methylene blue liquid and the cleaning water are mixed is discharged into the ball 10 from the rim water spouting nozzle 12 through the tank main body 62 and the pipe R202, so that the methylene blue liquid and the cleaning water are uniform. It becomes the water for measurement mixed in. The solid material 68 may be dissolved in the cleaning water in the tank body 62 in advance, instead of being stored in the container 66. Moreover, the solid substance 68 does not necessarily need to be solid, and may be a concentrated liquid of methylene blue. The methylene blue concentrate is mixed into the stored water in a certain amount in conjunction with the toilet cleaning operation each time, and is discharged into the ball 10 from the rim water spouting nozzle 12 via the tank main body 62 and the pipe R202, and the water for measurement is collected. You may comprise so that it may become.

  The sample collection mechanism 80 includes a predetermined drive motor (not shown) connected to the control unit 40 and a winding drum 84 around which a wire 82 is wound, and one end of the wire 82 is connected to one end on the bottom side of the ball 10. The ball 10 has a sample collection nozzle 86 which is configured to be stretchable by connecting a plurality of cylinders having different diameters in the longitudinal direction and connected to the syringe pump 34 at the other end on the upper side of the ball 10.

  The urination sound sensor detects a sound generated when the urine excreted by the subject collides with the measurement water stored in the ball 10 and transmits a predetermined detection signal to the control unit 40. The urine detection unit that detects the urine excreted by the subject is not limited to the urination sound sensor, but detects the weight of a temperature sensor that detects the temperature of the urine, or the accumulated water stored in the ball 10. A weight sensor or the like may be employed.

  An example of the operation of the urine component concentration measuring apparatus 5 according to the second embodiment configured as described above will be described.

  First, when a measurement switch (not shown) of the operation / display unit 4 is pressed by the subject, the CPU 42 of the control unit 40 drives the drive motor to send out the wire 82 wound around the winding drum 84. The plurality of cylinders are extended obliquely downward in the ball 10, and the tip of the sample collection nozzle 86 is inserted into the measurement water stored in the ball 10.

  With the tip of the urine collection nozzle inserted into the measurement reservoir, the CPU 42 operates the syringe pump 34 to suck a predetermined amount of the measurement reservoir in the ball 10 from the tip of the sample collection nozzle 86. The measurement water is discharged toward the absorbance meter 36 and transported. And since the point which measures the light absorbency of the water for measurement before urine mixing with the absorptiometer 36 is the same as that of 1st Embodiment, it abbreviate | omits description here.

  When the subject urinates into the ball 10, the CPU 42 operates the syringe pump 34 on the condition that a predetermined detection signal from the urination sound sensor has been received, and the ball 10 from the tip of the sample collection nozzle 86. The urine contamination measurement water is sucked in a predetermined amount, and the urine contamination measurement water is discharged and conveyed toward the absorbance meter 36 and the sugar concentration meter 38. Since the absorbance of the urine contamination measurement reservoir water is measured by the absorptiometer 36, and the concentration of the urine contamination measurement reservoir water is measured by the sugar concentration meter 38, it is the same as in the first embodiment, and will be described here. Is omitted.

  When the operation so far is completed, the CPU 42 drives the drive motor, winds the wire 82 around the take-up drum 84, and retracts the plurality of connected cylinders obliquely downward in the ball 10 to move the sample collection nozzle 86. The functional unit casing 9 is accommodated. Thereafter, a cleaning operation or the like of the sample collection nozzle 86 may be executed.

Next, when a series of measurement operations are completed and the subject presses the filth washing switch (not shown) of the toilet unit 2, the toilet control unit 21 of the toilet unit 2 executes the filth washing process. And when the washing process signal is received from the toilet control unit 21, the CPU 42 of the control unit 40 opens and closes an opening / closing valve (not shown) provided at the bottom of the tank body 62 to discharge the stored water from the rim water discharge nozzle 12. A siphon phenomenon is generated in the trap unit 14 to perform a cleaning process in the ball 10, and an operation of supplying water to be stored in the ball 10 from the tank body 62 is performed. At this time, the operation of supplying water to the tank body 62 is also executed, and the stored water is stored in the tank body 62.

  By this operation, the measurement reservoir water in which the methylene blue liquid and the washing water are mixed in the stored water stored in the tank main body 62 is stored in the ball 10. At the same time, as described above, new reservoir water mixed with the methylene blue liquid is stored in the tank body 62, and the next measurement preparation is completed.

  Since other operations of the urine component concentration measuring apparatus 200 of the present embodiment are the same as those of the first embodiment of the present invention, description thereof is omitted here. According to the urine component concentration measuring apparatus 200 according to the second embodiment of the present invention, the cleaning water storage tank 60, the reference substance mixing apparatus 232, the sample collection mechanism 80, and the urinary sound sensor are provided with a simple configuration. The same effect as that of the urine component concentration measuring apparatus 5 according to the embodiment can be obtained.

  In addition, in the urine component concentration measuring device according to each of the embodiments described above, a urine component concentration measuring method for measuring the concentration of a specific component contained in urine is employed. It may be applied to a test solution, for example, human blood or sweat.

  In such a case, a reference substance is mixed into a predetermined liquid (for example, water) in a method for measuring the concentration of a specific component in a solution to be inspected (for example, blood or sweat). The measurement solution is made, the physical property value of the measurement solution is measured, and the measurement solution is mixed with the solution to be inspected to form a measurement mixed solution, and the physical property value of the measurement mixed solution (for example, (Absorbance and fluorescence intensity) and the concentration of a specific component contained in the measurement mixed solution, and the physical property value of the obtained measurement solution, the physical property value of the measurement mixed solution, and the measurement mixed solution It is possible to provide a test solution component concentration measuring method characterized in that the concentration of the specific component contained in the test solution is calculated based on the concentration of the specific component contained.

  As described above, some of the embodiments of the present invention have been described in detail with reference to the drawings. However, these are merely examples, and various embodiments can be made based on the knowledge of those skilled in the art including the aspects described in the section of the disclosure of the invention. The present invention can be implemented in other forms that have been modified or improved.

  For example, the reference substance mixing means in the present invention is a discharge hole for discharging the water supplied by the water supply means into the ball, like the reference substance mixing apparatus 32 provided in the urine component concentration measuring apparatus 5 according to the first embodiment. The reference material is not limited to the material mixed with the reference material on the upstream side, and the reference material may be directly mixed into the water stored in the ball. In this case, it is preferable to provide a stirring means for uniformly mixing the stored water and the reference substance to obtain a measurement stored water containing the reference substance having a predetermined concentration.

  In each of the above-described embodiments, the reference substance concentration obtained by measuring the absorbance of the measurement reservoir before urination with the absorptiometer 36 is used as the reference substance concentration before urine mixing, but in the urine component concentration measuring apparatus according to the present invention. The urinary reference substance concentration before urination before urination does not necessarily have to be obtained by measurement. That is, the predetermined concentration may be used as the reference substance concentration before urine mixing, in which water prepared in advance as the “predetermined concentration” in the present invention is used as the measurement reservoir water. In this case, the absorbance measurement needs to be performed only once, and therefore the time required for one measurement is shortened.

  On the other hand, if it is configured to measure and determine the reference substance concentration before urine mixing, the reference substance concentration of the measurement water can be somewhat wide, so as in this embodiment, In the case of preparing the measurement water, the required level of the accuracy of mixing the reference material mixing means is lowered, and the cost can be reduced. In addition, since the reference substance concentration at the time of actual measurement can be measured and used as the reference substance concentration before urine mixing, even if there is a change in the reference substance concentration due to evaporation of stored water during use standby, Accuracy can be measured.

  Further, in each of the above-described embodiments, one absorptiometer 36 functions as a physical property value measuring unit before urine mixing and a physical property value measuring unit after urine mixing, but not limited to this, two absorptiometers are provided, These may function as physical property value measuring means before urine mixing and physical property value measuring means after urine mixing.

  The effects described in the embodiments of the present invention are only the most preferable effects resulting from the present invention, and the effects of the present invention are limited to those described in the embodiments of the present invention. is not.

It is an external view of the whole toilet device provided with the urine component concentration measuring device concerning a 1st embodiment of the present invention. It is a sectional side view of the toilet part with which the toilet device shown in FIG. 1 is provided. Schematic explanatory drawing showing the entire configuration of the toilet device shown in FIG. 1 and its electrical configuration It is the elements on larger scale of the jet water discharge nozzle with which the toilet part shown in FIG. 2 is provided. It is typical explanatory drawing which shows the structure of a reference | standard substance mixing apparatus. It is typical explanatory drawing which shows the structure of a syringe pump. It is typical explanatory drawing which shows the structure of an absorptiometer. It is an absorbance spectrum diagram showing an example of the relationship between absorbance and wavelength of measurement water stored in an absorptiometer. It is a fluorescence-intensity spectrum diagram which shows an example of the relationship between the fluorescence intensity and the wavelength of the urine mixing measurement reservoir water measured by the fluorescence intensity meter. It is a figure which shows the time change of the density | concentration of the NaCl solution in stored water when the NaCl solution of the predetermined density | concentration which simulated urine is thrown in (mixed) in the stored water stored in a ball | bowl. It is a flowchart which shows operation | movement of a urine component concentration measuring apparatus. It is a figure which shows the aspect from which the water level of the water for measurement changes. It is a sectional side view of the toilet part which the toilet device provided with the urine component concentration measuring apparatus which concerns on 2nd Embodiment of this invention has.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Toilet device 2 Toilet unit 2a Toilet body 3 Rear cabinet 4 Display unit 5 Urine component concentration measuring device 6 Toilet seat 7 Toilet lid 8 Functional unit casing 9 Functional unit casing 10 Ball 10a Bulkhead 10b Upper part 10c Bottom part 11 Rim part 12 Rim water discharge nozzle 14 Trap part 14a Trap inlet 14b Trap drain 16 Zet water discharge nozzle 16a Zet hole 16c Electrode 18 Reserved water 18a Measurement start water level 18b Sealed water level 20 Washing part 21 Toilet controller 22 Water supply valve 24 Water switch valve 30 Measuring part 32 Reference substance Mixing device 32a Reference substance storage tank 32b Pump 32c Check valve 34 Syringe pump 34a Cylinder 34b Piston 34c Syringe drive motor 34d Reed screw mechanism 34e Port 35 Electric rotary valve 35a Port 35b Port 35c Port 36 Absorbance meter 3 a sample cell 36b light source 36c photosensor 38 sugar concentration meter 40 the control unit 41 a clock unit 42 CPU
44 ROM
46 RAM
DESCRIPTION OF SYMBOLS 50 Measurement control circuit 52 Communication means 60 Washing water storage tank 62 Tank main body 64 Hand-washing water discharge pipe 66 Container 68 Solid substance 80 Sample collection mechanism 82 Wire 84 Winding drum 86 Sample collection nozzle 200 Urine component concentration measuring apparatus 232 Reference substance mixing apparatus Dn dilution rate Ds dilution rate F1 irradiation light F2 transmitted light R1 piping R2 piping R202 piping R3 piping R4 piping U0 urine sugar concentration U1 in raw urine X1 urine sugar concentration X1 in urine contamination measurement water wavelength band X2 wavelength band S of substance Physical property value S0 Absorbance of methylene blue solution S1 Absorbance of methylene blue solution Da Dilution rate of solution A Db Dilution rate of solution B Dax Dilution rate of solution A at position x in mixed solution (A + B) Position x in mixed solution (A + B) The dilution ratio Ma of the solution B in the solution is set to the position x in the mixed solution (A + B) Kicking analyte concentration ΔT measurement standby measurement substance concentration Q ₁ mixed solution of the target substance concentration Dn dilution α absorption coefficient L pathlength Q particular substance concentration dilution Ds measuring accumulated water in the original urine Q ₀ solution B (A + B) Lower limit time Td Measurement waiting time f (s) Function

Claims (12)

In a urine component concentration measuring device that measures the concentration of a specific component contained in urine,
A toilet that stores water and communicates with a sewer, receives a urine excreted by a subject with the ball, and discharges the water together with the water to the sewer;
A reference substance mixed in the stored water before the urine is discharged;
A measurement reservoir water supply means for supplying, into the ball, measurement reservoir water in which the reference substance is mixed into the reservoir water so that the concentration of the reference substance is a predetermined concentration of the reference substance before urine mixing;
A post-urine-mixed reference substance concentration measuring means for measuring a post-urine-mixed reference substance concentration, which is the concentration of the reference substance, which is the concentration of the urine-mixed measurement reservoir water after the urine is mixed,
Reservoir component concentration measurement means for measuring the concentration of the specific component contained in the urine contamination measurement reservoir water, which is the concentration of the specific component;
Urine component concentration calculating means for calculating the concentration of the specific component contained in the urine based on the reference material concentration before urine mixing, the reference material concentration after urine mixing, and the component concentration of the stored water; Have
The post-urine-mixed reference substance concentration measuring means sets the post-urine-mixed reference substance concentration as a measurement target for the urine-mixed measurement reservoir water at a measurement position where the pooled water component concentration-measuring means measures the pooled water component concentration. A urine component concentration measuring device characterized by measuring.   2. The urine component concentration measuring apparatus according to claim 1, wherein the stored water component concentration measuring means measures the vicinity of the bottom of the ball as the measurement position. A measurement that includes an opening provided at the bottom of the ball, collects a part of the urine contamination measurement water in the vicinity of the bottom of the ball from the opening as a measurement sample, and transfers the measurement sample to the outside of the ball Having sample collection means,
The post-urine mixed reference substance concentration measuring means and the stored water component concentration measuring means are disposed outside the ball,
The measurement sample is used as a measurement target, and the post-urine-mixed reference substance concentration measurement unit measures each of the post-urine-mixed reference substance concentration and the stored-water component concentration measurement unit measures the stored-water component concentration. The urine component concentration measuring apparatus according to claim 2.   4. The urine component concentration measuring apparatus according to claim 3, wherein the opening is a toilet flushing water spout provided at the bottom of the ball. Urine mixed state determination means for determining whether or not the mixed state of the urine in the urine contamination measurement reservoir has reached a predetermined mixed state;
When the urine mixing state determination means determines that the predetermined mixing state has been reached, the post-urine-mixed reference substance concentration measurement means by the post-urine-mixing reference substance concentration measurement means and the reservoir concentration by the stored water component concentration measurement means The urine component concentration measuring apparatus according to any one of claims 1 to 4, wherein each measurement of the component concentration in water is started. The urine mixing state determination means includes a urine contamination detection means for detecting the urine contamination in the measurement reservoir, and a lapse of time elapsed after the urine contamination detection means detects the urine contamination. A time measuring means,
6. The urine component concentration measuring apparatus according to claim 5, wherein it is determined that the predetermined mixed state has been reached when the elapsed time measured by the elapsed time measuring means has exceeded a predetermined time.   The urine component concentration measuring device according to any one of claims 1 to 6, further comprising means for reducing the amount of stored water for reducing the amount of stored water for measurement.   The urinary component concentration according to any one of claims 1 to 7, wherein the urinary reference material concentration and the urinary reference material concentration are concentrations calculated from absorbance or fluorescence intensity. measuring device. The measurement water supply means has water supply means for supplying water as the water from a predetermined water supply source, and reference substance mixing means for mixing the reference substance into water supplied by the water supply means. And
The said reference substance mixing means mixes the said reference substance of the quantity from which the density | concentration of the said reference substance becomes the said reference substance density | concentration before urine mixing in the said water, The one of Claims 1-8 characterized by the above-mentioned. Urine component concentration measuring device.   The urine component concentration measuring apparatus according to any one of claims 1 to 9, wherein the specific component is a component that reflects biological information of a subject that leaks into urine such as sugar and protein.   A toilet device in which the urine component concentration measuring device according to any one of claims 1 to 10 is integrated. In a solution component concentration measurement method for measuring the concentration of a specific component contained in a solution to be tested,
Prepare a measurement solution in which a reference substance is mixed in a predetermined liquid and the concentration of the reference substance is set to a predetermined reference substance concentration before mixing,
The measurement solution is mixed with the solution to be inspected to make a measurement mixed solution,
The mixed solution component concentration that is the concentration of the specific component contained in an arbitrary position in the measurement mixed solution is measured, and the post-mixing reference material concentration that is the concentration of the reference material of the measurement mixed solution is also included. Measure and
Solution component concentration measurement, wherein the concentration of the specific component contained in the solution to be inspected is calculated based on the reference material concentration before mixing, the reference material concentration after mixing, and the concentration of the mixed solution component Method.

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