JP2007077755A - Urination information measuring toilet bowl - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize highly accurate measurement of urination information in an urination information measuring toilet bowl for measuring urination information by sensing a change in a water level, by canceling the change in the retaining water in the toilet bowl attributed to a sewage pipe to which the toilet bowl is connected, and the change in the retaining water in the toilet bowl attributed to the urination. <P>SOLUTION: Even when the water level of the retained water changes or the retained water popples, the change and movement of the volume of the retained water can be monitored with high accuracy by correcting a measured value of the water level of the bowl part, which is measured by a water level measuring means, according to a preset correction relational expression based on a water level difference between a trap part and the bowl part caused by the change in pressure in a sewage drain pipe, and by combining it with a control means of the retaining water level provided in the measurement system. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  In the sewage pipe to which the toilet is connected for discharging filth, the pressure fluctuation of the air in the sewage discharge pipe occurs due to the drainage of various equipment facilities. When the pressure fluctuation generated in the sewage pipe is transmitted to the urine information measurement toilet, which measures urination information from the change in the level of the stored water in the toilet bowl, the measured value of the stored water level changes. Measurement error occurs. The present invention relates to removing the effect of vibrations caused by fluctuations in the level of accumulated water and the ripples of accumulated water caused by pressure fluctuations generated in sewage piping, and in particular, increases urination information including urine volume or urine flow rate. The invention relates to a toilet for measuring urination information suitable for accuracy measurement.

  In a medical institution, there is a urination information measurement toilet having a measurement function such as urine volume for confirming a metabolic state of a subject. In this toilet, the urine volume measurement start water level is set so that the accumulated water in the ball is sucked into a separate tank or discharged directly into the sewage pipe so that the accumulated water does not overflow from the trap part due to urination. After lowering the water level to urine, encourage the subject to urinate in a state where the separate tank and the pooled water are interlocked, and measure the water level of the separate tank before and after urination and try to convert it to urine output (For example, see Patent Document 1).

  As another example of a toilet for measuring urination information, urination is received at the ball surface of a toilet having a trap part communicating with the sewage pipe, and the change in the water level of the ball part stored water connected to the trap part is transferred to the ball part stored water. A pressure sensor attached via a pressure guiding tube detects the change in pressure, and uses the stored water level and the stored amount calibration curve to measure the amount of urine by converting it to the change in the amount of water stored in the ball. There is a urination information measuring toilet (for example, see Patent Document 2).

  In this example, the stored water level is measured, but since the total amount of urine to be measured is not large with respect to the horizontal cross-sectional area of the ball portion, the change in the water level is smaller than that in the case of Document 1. Will be measured.

  In both of the examples described above, the ball portion serving as the urine receiver is connected to the sewage pipe via the toilet trap, and the measurement of the amount of urination is based on the principle of measuring the amount of change in toilet bowl water. That is, in both cases, if the pressure in the sewage pipe is fluctuated, the water level of the stored water is also affected and changes, so that an error also occurs in the measured urine output.

  Therefore, when there is no water flow in the sewage pipe or the ventilation equipment sufficiently replaces the internal air accompanying the water flow, pressure fluctuation is not transmitted to the toilet and accurate urine output measurement is possible. . However, if there is water flow in the sewage pipe and the ventilation system of the sewage pipe does not sufficiently replace the internal air that accompanies the water flow, pressure fluctuation will occur inside the sewage pipe and it will be transmitted to the toilet. Become.

  A common cause of pressure fluctuation in the sewage pipe is due to the flow of water discharged into the sewage pipe. If the air flows while drawing air, negative pressure is generated in the pipe, and if the flow rate is higher than the flow rate that can be discharged, the pipeline becomes clogged with the flow, and the air in the pipe is returned to generate positive pressure. Will do. Since the water and air flow in the sewage pipe, the fluctuating pressure value does not become constant.

  According to the standard HASS206-2000 of the water and sanitation equipment standard of the Society for Air Conditioning and Sanitary Engineering, the range of pressure fluctuation generated in the sewage pipe is required to be within the atmospheric pressure ± 40 mm water column for the sanitary equipment pipe of the building. In a general toilet bowl shape, the amount of change in the level of retained water with respect to 100 mL of urine is about 2 to 4 mm, and the amount of accumulated water changes by 1 L or more when the water level changes by 40 mm. I can easily imagine becoming.

  In order to prevent the influence of the pressure fluctuation in the sewage pipe, in the example of Patent Document 2, an attempt is made to correct the change in the stored water level caused by the pressure fluctuation in the sewage drain pipe by measuring the pressure in the sewage drain pipe. However, the correction method is to correct the measured water level by the ratio of the pressure receiving area on the trap side of the toilet bowl water and the pressure receiving area on the toilet bowl side, and special consideration is required to obtain these pressure receiving areas. It is difficult to implement with a simple configuration.

Further, in actual measurement, ripples in the ball reservoir due to the impact of landing on the urine during urination also occur as a noise component in the measurement. Further, it has been found that the pressure fluctuation in the sewage pipe has components that generate minute pulsations with a short cycle in addition to the relatively long cycle components described above.
Japanese Patent No. 3520685 WO2004-113630

The present invention has been made to solve the above problems, and an object of the present invention is to provide a urination information measuring toilet that measures urination information including urine volume by sensing a change in the water level of toilet bowl ball water. Effects of two measurements, namely, water level change due to pressure fluctuations in the sewage pipe received by the trap portion water, and spilled water caused by the ball portion due to the impact of urine landing during urination It is intended to realize highly accurate urination information measurement by canceling fluctuations in the toilet water caused by factors.

In order to achieve the above object, according to the first aspect of the present invention,
A ball for receiving the subject's urine, and a trap portion for forming a reservoir for sealing the sewage pipe to communicate with the ball and a sewage pipe for discharging the sewage water in the ball; A ball part water level measuring means for measuring the water level of the ball part stored water, the sewage pressure fluctuation measuring means for measuring the effect of the pressure fluctuation in the trap on the water level in the ball, In a urine information measuring toilet having urine information measuring means for measuring urine volume or urinary flow rate based on a measurement value of the ball part water level measured by the water level measuring means when urinating on a ball,
By having a measurement value correction means for correcting the ball part water level measurement value measured by the ball part water level measurement means by a preset correction relational expression based on the measurement value of the sewage pressure fluctuation measuring means. ,
Even if the pressure fluctuation generated in the sewage pipe is transmitted, it is possible to convert the measured water level to the amount of water stored in a state where there is no pressure fluctuation. The amount of accumulated water before and after urination and during urination can always be treated as a change in the amount of accumulated water at the same pressure value in the sewage pipe (there is no pressure fluctuation), and the ball part and trap part caused by pressure fluctuations in the sewage pipe Even if a difference in water level occurs, it is now possible to monitor changes in the amount of accumulated water with high accuracy.

According to the invention of claim 2,
Since the ball part water level measuring means is a pressure sensor provided in a pressure guiding pipe connected to the stored water,
Since the water level fluctuation can be directly measured as the pressure value fluctuation, a highly accurate water level fluctuation measurement value can be obtained with a simple configuration.

According to the invention of claim 3,
Since the sewage pressure fluctuation measuring means is a sewage pressure measuring means for measuring the pressure in the sewage pipe through the trap portion,
For measuring the water level difference between the ball part and the trap part, it is not necessary to process the toilet simply by providing sewage pressure measuring means in the pipe line communicating with the inside of the sewage drain pipe. It is possible to measure the influence of pressure fluctuations on the water level in the ball.

According to the invention of claim 4,
The correction relational expression is for the pressure fluctuation in the sewage pipe measured by the sewage pressure fluctuation measuring means.
By determining the relationship of the water level change in the plurality of ball portion water levels measured by the water level measuring means,
The amount of fluctuation in the measured water level due to the effect of pressure fluctuations in the sewage pipe can be corrected by simple processing.

According to the invention of claim 5,
The correction relational expression is obtained by obtaining the relationship of the water level change of the urine volume measurement starting water level to the pressure fluctuation in the sewage pipe measured by the sewage pressure fluctuation measuring means.
The specs relating to the storage capacity and calculation speed required for the control device of the measurement value correction means can be kept to a low level without greatly reducing the measurement accuracy, thereby shortening the time for calculating urination information and the manufacturing cost of the control device. It was possible to achieve a reduction.

According to the invention of claim 6,
The ball part water level measuring means has a ripple noise removing means for the accumulated water, and the ripple noise removing means controls the noise component of the ball part water level measuring means output measured by the pressure sensor. By
Since only a software data process is required and no special structure is required, the configuration of the apparatus is simplified.

According to the invention of claim 7,
The ball part water level measuring means has a ripple noise removing means for the accumulated water, and the ripple noise removing means is a water column pipe having one end connected to the pressure guiding conduit and the other end opened to the atmosphere. ,
It is possible to remove (vibrate) with a simple configuration without requiring control software for removal.

According to the invention of claim 8,
By using the pressure due to the water level when the water column pipe full of the other end is opened to the atmosphere for calibration of the output of the ball part water level measuring means for measuring by the pressure sensor,
Not only is the effect of ripples (water level pulsation) generated in the stored water removed, but the measured value of the pressure sensor for measuring the stored water level is also used for absolute calibration, so the configuration of the apparatus is simplified.

According to the present invention, the water level change (water level shift) due to the pressure fluctuation of the sewage pipe received by the trap water stored in the trap water and the ball part due to the impact of landing of urine during urination are generated. It is possible to cancel the influence of the spilling water (water level pulsation) as a result, and to achieve highly accurate urination information measurement.

  FIG. 1 is a perspective view showing the entire urination information measuring toilet according to the first embodiment of the present invention. The usage of the subject will be described with reference to FIG.

The urination information measurement toilet 101 according to the present embodiment includes a Western-style toilet 102, various functional units that operate the urine information measurement toilet 101, and a cabinet 104 that houses a control unit 120. The present embodiment further has a urine component measuring device for measuring the concentration of a specific component in urine and a sanitary washing device incorporated in a toilet, but none of them is necessary for urine volume measurement.
The western-style toilet 102 is made of earthenware, and a resin toilet seat 110 and a toilet lid 112 are rotatably attached to the upper part thereof.

  An operation / display unit 122 for operating the urination information measurement toilet is installed on the wall. Although the sanitary washing device remote control 132 for operating the sanitary washing device is installed, it is not necessary for the urination information measuring toilet. The urination information measuring unit remote control 134 is operated when the subject enters the tray and measures urination information, and is provided with a preparation operation switch indicating a measurement intention and a urination end switch indicating that urination has ended. The urine information measuring unit remote controller 134 may be provided with reading means such as a personal authentication switch and an ID card in order to acquire time-dependent data of the subject. The measurement result may be disclosed to the subject on the display unit of the urination information measuring unit remote control 134 or may be disclosed to the subject using the printer 136. Furthermore, assuming that the urination information measurement toilet is installed in a medical institution, the nurse operates the urination information measurement unit remote control 134 to collect data from a printer 136 in order to collect a plurality of subject data at a predetermined time. It is also possible to take out

  The above-described urine component measuring device collects a part of urine with the urine collecting device 114 and sends it to the urine component measuring unit 114d to perform various analyzes including the concentration of a specific component. The urine collection device 114 includes a urine collection device 114a that collects urine of a subject, a urine collection arm 114b that rotates the inside of the ball 106, and a urine collection unit 114c that performs a driving operation. As described above, the urine component measuring device is not essential for urine volume measurement, but by combining with the urinary information measuring toilet of the present invention capable of measuring the amount of urine excreted, for example, the specific urinary component excretion The amount of ingredients can also be determined.

FIG. 2 is a block diagram showing the overall configuration of the present embodiment.
The toilet 1 is connected to a sewage pipe 9 through a drain socket 10. The trap water 5 is formed in the sewage pipe 9 by the trap portion 5, and the sanitation is taken into consideration so that odors and hygiene pests generated in the sewage pipe do not enter the toilet. A ball 2 is formed on the inner side of the toilet 1 to be excreted by the subject. The ball 2 has a circumferential surface washed by water supplied from the water level setting means 6 to the rim water spouting nozzle 7, and a jet. A siphon phenomenon is generated by supplying water to the water discharge nozzle 8, and excreta is sent to a sewage pipe.

  The water level setting means 6 includes a rim water discharge means 71 and a jet water discharge means 81 for supplying water to the rim water discharge nozzle 7 and the jet water discharge nozzle 8 of the toilet 1, respectively. The supply flow path from the jet water discharge means 81 to the jet water discharge nozzle 8 has a branch portion 82, and a pressure guiding water path 83 to the stored water level measurement means 14 is branched and connected. The pressure guiding channel 83 is for transmitting the water level head of the stored water 4 to the stored water level measuring means 14 in order to measure the stored water level.

  A sewage pressure fluctuation measuring means 16 is connected to the drain socket 10 which is a connection portion with the sewage pipe. The water level setting means 6, the stored water level measurement means 14, the operation / display section 22, and the sewage pressure fluctuation measurement means 16 are connected to a common control section 15, which controls the water supply operation, measures urination information, and subjects. Various controls such as the operation reception process and output of measurement results are performed.

  The control unit 15 includes a measurement value correcting unit 17 and a urination information calculating unit 18. The measurement value correction means 17 corrects the measurement value of the stored water level measurement means 14 to a state where there is no fluctuation in the sewage pressure by the measurement value of the sewage pressure fluctuation measurement means 16. Information regarding the corrected water level of the stored water is calculated by the urination information calculation means 18. Various measurement results calculated by the urination information calculation means 18 and measurement environment information such as personal authentication results and measurement times are used not only for subjects but also medical personnel such as doctors and nurses who use measurement data, urination information External output means (not shown) is provided for communication with the facility manager who manages the operation of the measuring toilet.

  In this embodiment, a pressure sensor capable of taking an output proportional to the change in the water level is used as the water level detection means of the stored water level measurement means 14, and in this case, since the fluctuation in the water level can be directly measured, the configuration of the apparatus is simplified. . Other examples of the water level detection means include a non-contact ultrasonic displacement sensor provided in the toilet 1 and can be expected to operate with high reliability since it does not come into contact with sewage.

  The stored water level measuring means 14 also includes a vibration isolating means 14a for removing the influence of minute vibrations such as ripples of the stored water on the water level measurement, and a calibration means 14b for performing a calibration operation for the water level measurement value. .

  The sewage pressure fluctuation measuring means 16 measures the influence of the pressure fluctuation in the sewage drain pipe on the water level of the stored water. In this embodiment, the pressure sensor is used to directly measure the pressure fluctuation in the sewage drain pipe. However, as another example, a configuration may be used in which the amount of change in the stored water level caused by the pressure fluctuation in the sewage drain pipe is measured using a water level sensor.

  FIG. 3 is a schematic diagram for explaining the influence of the sewage pressure fluctuation on the measurement of the accumulated water level in the embodiment of the present embodiment. The actually measured sewage pressure fluctuation measurement value (a) and the measured accumulated water level at that time (B) is associated with the same time axis. Furthermore, in order to explain the principle of removing the influence of these sewage pressure fluctuations in this embodiment, the stored water level measurement value is divided into two components, a water level shift component and a water level pulsation component, which will be described later, due to the difference in behavior. The divided item (c) is also shown.

Here, each fluctuation component of the fluctuation of the measured value of the stored water level caused by the fluctuation of the sewage pressure will be described below with reference to FIG.
Even if the water level does not change due to urination, the actual water level may change (water level shift) due to fluctuations in the sewage pressure. That is, when a negative pressure is generated in the sewage pipe, the water level in the ball surface is lowered. Conversely, when a positive pressure is generated in the sewage pipe, the water level in the ball surface is increased. Since such a change caused by the influence of the fluctuation of the sewage pressure works to shift the measurement value of the stored water level, hereinafter, for convenience of explanation, it is referred to as a “shift component” of the measurement value of the stored water level in the fluctuation of the sewage pressure.
In addition, the effect of fluctuations in the sewage pressure includes other components that slightly change the measured value of the stored water level in a shorter cycle than this shift component. Called the “pulsation component” of the value.

  And when the fluctuation | variation of a stored water level is represented typically by these components, it will become a relationship like (c) of FIG. In addition, if the pipe diameter used inside a building is general (phi) 75mm or (phi) 100mm, it is generally known that the period of a sewage pressure fluctuation | variation is 1-3Hz.

  Furthermore, when the stored water level is actually measured by the measurement system, as shown in FIG. 3, the stored water level also changes synchronously with a slight delay from the pressure fluctuation in the sewage pipe. That is, the measured water level measurement waveform appears in the form of a phase shift with respect to the sewage pressure measurement waveform. This delay is thought to be because the measurement system of this example observes the output of the pressure sensor via the pressure guiding tube.

  In the present embodiment, fluctuations occurring in the measured value of the stored water level are corrected for the amount of influence due to fluctuations in the sewage pressure by being handled separately as a water level shift component and a water level pulsation component, as schematically shown in FIG. ing.

The amount of excreted urine performed by the toilet for measuring urination information, which is the subject of the present invention, is to measure the change in the level of the accumulated water in the bowl portion of the toilet bowl. Since it is connected to the sewer pipe through the section, the water level of the stored water is affected by pressure fluctuations in the sewer pipe.
FIG. 4 is a schematic diagram showing the behavior of the accumulated water due to the pressure fluctuation in the sewage pipe in this embodiment, and the water level is measured by the accumulated water level measuring means 14 communicated with the bottom of the accumulated water of the ball 2. It has become.

  FIG. 4 (a) is a diagram showing the water level in the ball 2 and the trap part 5 when the pressure in the sewer pipe is equal to the atmospheric pressure, and FIG. 4 (b) shows the case where the pressure in the sewer pipe is negative (c) ) Is a diagram showing the water level in the case of positive pressure. As shown in FIG. 3A, when the pressure in the sewer pipe is equal to the atmospheric pressure, the water level in the ball 2 and the water level in the trap part 5 are equal.

  On the other hand, as shown in FIG. 4B, when the pressure in the sewage pipe becomes negative, the accumulated water in the trap section 5 is sucked toward the sewage pipe, so that the water level in the trap section 5 rises. Then, the water level in the ball 2 falls. On the other hand, as shown in FIG. 4C, when the pressure in the sewer pipe becomes positive, the accumulated water in the trap portion 5 is pushed, the water level in the trap portion 5 is lowered, and the water level in the ball 2 is raised. To do. In the case of FIG. 4B or 4C, if the water level is obtained as it is from the measured value of the stored water level measuring means 14 and the amount of stored water is calculated, an error occurs in the calculated value of the stored water amount.

  The correction for the water level change (water level shift) of the ball portion stored water due to the pressure fluctuation in the sewage pipe is performed by measuring the pressure fluctuation in the trap portion 5 corresponding to the pressure fluctuation in the sewage pipe by the sewage pressure fluctuation measuring means 16. This is done by determining the amount of influence that the ball 2 has on the water level.

  In this embodiment, the sewage pressure fluctuation measuring means 16 is a sewage pressure measuring means connected to the sewage pipe, and specifically employs a pressure sensor 121 that measures the pressure in the sewage pipe on the basis of the atmospheric pressure described later. ing. Based on the pressure value in the sewage pipe measured by the pressure sensor 121, the measurement value correcting means 17 corrects the measured value of the stored water level to a value in a state where there is no fluctuation in the sewage pressure, and the corrected stored water level measurement. The value is converted into the amount of stored water using the above-mentioned calibration curve of the stored water level and the amount of stored water.

  Hereinafter, referring to FIG. 4, the amount of influence (water level shift component) that the water level change caused by the pressure fluctuation in the sewage pipe has on the water level measurement value is determined by the measurement value correction means 17 according to the pressure measurement result in the sewage pipe. The principle of correction to be performed will be described.

  The pressure P1 acting on the trap 5 and the pressure acting on the ball 2, that is, the atmospheric pressure is P2. The distance from the height at which the pressure sensor 118 provided in the stored water level measuring means 14 for measuring the stored water level to the height of the water surface of the trap portion 5 is H1, and the distance from the height of the water surface of the ball 2 is H2. Then

の関係が成り立つ。ただし、ρは水の密度、ｇは重力加速度である。

The relationship holds. Where ρ is the density of water and g is the acceleration of gravity.

  In Equation 1, if the pressures P1 and P2 are equal, the relationship of H1 = H2 is established. Here, if the pressure P1 rises, the water level of the trap part 5 decreases by Δh1 to become H1 ′, and the water level of the ball 2 rises by Δh2 to become H2 ′, the difference between the pressures P1 and P2 is the difference in the head pressure. So that

の関係が成り立つ。ここで、ボール２及びトラップ部５は連通しているので、トラップ部５の水位変化Δｈ１とボール２の水位変化Δｈ２の間には、トラップ部５の水面の面積をＳ１ 、ボール５の水面の面積をＳ２とすると、微小な水位変化Δｈ２に対して、

The relationship holds. Here, since the ball 2 and the trap portion 5 are in communication, the area of the water surface of the trap portion 5 is S1 between the water level change Δh1 of the trap portion 5 and the water level change Δh2 of the ball 2, and Assuming that the area is S2, for a small water level change Δh2,

の関係が成り立つ。さらに、数式３の関係を数式２に代入してΔｈ１を消去すると、

The relationship holds. Furthermore, if Δh1 is eliminated by substituting the relationship of Equation 3 into Equation 2,

の関係が成り立つ。一方、溜水水位を測定する圧力センサ１１８によって測定される圧力ＰＳは、水面に作用する圧力と、水頭圧との和であるから、

The relationship holds. On the other hand, the pressure PS measured by the pressure sensor 118 that measures the water level is the sum of the pressure acting on the water surface and the water head pressure.

となる。次に、数式４の関係を、数式５に代入して、Δｈ２を消去すると、

It becomes. Next, substituting the relationship of Equation 4 into Equation 5 to eliminate Δh2,

となる。ここで、ボール２は大気に開放されているため、ボール２の水面に作用する圧力Ｐ２は常に大気圧であり、圧力をゲージ圧とするとＰ２＝０ となる。従って、数式６は、

It becomes. Here, since the ball 2 is open to the atmosphere, the pressure P2 acting on the water surface of the ball 2 is always atmospheric pressure, and P2 = 0 when the pressure is gauge pressure. Therefore, Equation 6 is

となる。数式７をボール２の水面の高さＨ２について解くと、

It becomes. Solving Equation 7 for the water surface height H2 of the ball 2,

となる。圧力センサ１１８によって測定される圧力ＰＳは、圧力変動発生時のボール水位Ｈ２’を測定しているのだから、数式８は数式９のように解釈することができる。

It becomes. Since the pressure PS measured by the pressure sensor 118 measures the ball water level H2 ′ at the time of occurrence of pressure fluctuation, Equation 8 can be interpreted as Equation 9.

つまり圧力変動が無い場合のボール水位Ｈ２は、ボールとトラップ部の面積比を傾きとし、トラップ部５に作用する圧力Ｐ１に比例する補正を行うことで得られることがわかる。

That is, it can be seen that the ball water level H2 when there is no pressure fluctuation can be obtained by making the area ratio between the ball and the trap part an inclination and performing a correction proportional to the pressure P1 acting on the trap part 5.

  Therefore, the measured pressure PS by the pressure sensor 118 provided in the stored water level measuring means 14 for measuring the stored water level and the measured pressure P1 by the sewage pipe pressure sensor 121 provided in the sewage pressure fluctuation measuring means 16 are expressed by the following equation (9). By substituting for, the water level in the ball 2 when the pressure in the sewage pipe is atmospheric pressure rises and the water level in the ball 2 rises and the water level is H2 '. H2 can be calculated. Further, even when the pressure in the sewer pipe is changed and the water level in the ball 2 is lowered, the water level H2 in the ball 2 when the inside of the sewer pipe is at atmospheric pressure can be similarly calculated.

The correction term of Equation 9 includes the cross-sectional area ratio between the ball and the trap part, but it is difficult to measure the area ratio in each water level cross section. Therefore, in this embodiment, a predetermined fluctuating pressure is applied from the sewage pipe side, the fluctuation tendency of the water level is shown for each sealing depth, the relation corresponding to Equation 9 is measured, and the regression equation The correction term is obtained from this, and the method is used to correct the measured value of the stored water level. The correction of the stored water level means that the stored water amount can be corrected using the calibration relationship between the stored water level and the stored water amount.

Next, the specific procedure of the correction method for the water level shift component of the pressure fluctuation will be described below with reference to FIGS.
FIG. 5 is a schematic diagram showing the relationship between the sewage pressure fluctuation and the stored water level measurement value when the sewage pressure fluctuates. FIG. 6 is a schematic diagram showing a state in which the sewage pressure fluctuation is corrected with respect to the measured value of the stored water level.

  The ball water level H2 'at the time of pressure fluctuation is proportional to the pressure P1 acting on the trap part 5, and the slope a tends to decrease because the area ratio between the ball and the trap part increases as the water level increases. Is shown. The ball water level H2 'when the pressure fluctuates is determined by the ball water level H2 when there is no pressure fluctuation, the pressure P1 of the trap part, and the slope a of the ball water level H2' when the pressure fluctuates with respect to the pressure P1 of the trap part.

で表される。従って、事前にトラップ部の圧力Ｐ１に対する圧力変動時のボール水位Ｈ２’を求め、傾きａを測定しておけば、

It is represented by Therefore, if the ball water level H2 ′ at the time of pressure fluctuation with respect to the pressure P1 of the trap portion is obtained in advance and the inclination a is measured,

の関係で、圧力変動が無い場合のボール水位Ｈ２を得ることができることになる。

Therefore, it is possible to obtain the ball water level H2 when there is no pressure fluctuation.

  The slope a is a different value for each level of the stored water. Accordingly, when there is sufficient controllable storage capacity and high-precision measurement is desired, a slope a may be set for each measured value of each water level and pressure fluctuation and used as a measurement table. Further, when the controllable storage capacity is limited and the measurement accuracy requirement is low, for example, the slope a at the measurement start water level may be used as the representative value.

  In general, there is a response delay in the measurement system for measuring the water level of the stored water with respect to fluctuations in the water level of the ball 2. That is, even if the actual water level is shifted due to urination or sewage pressure fluctuation, it means that the measurement system for measuring the water level cannot follow the response delay at the same timing. Therefore, after measuring both the sewage pressure fluctuation and the accumulated water level fluctuation from the start to the end of urination, there is a method of collectively shifting the accumulated water level to a state where there is no pressure fluctuation while taking into account the response delay. Recommended. For the water level pulsation component of the accumulated water level, the vibration isolation means described later is used.

Next, the procedure for carrying out the correction method described above will be described using actual measurement data.
FIG. 7 is a graph showing actual measured values of the stored water level when the sewage pressure fluctuates.
Each line supplies 200 mL, 400 mL, 600 mL, 800 mL, and 1000 mL with respect to the measurement start water level, and a state in which pressure fluctuation is applied in the range of −40 mmAqa to +40 mmAqa, which is the standard of the Air Conditioning and Sanitation Engineering Society, for each water level. Indicates.

  From this graph, it can be seen that pressure fluctuation and water level change have a positive proportional correlation. The slope of the change in the stored water level with respect to pressure fluctuations decreases as the amount of stored water increases, i.e., as the sealing depth increases, but this indicates that the horizontal cross-sectional area of the bowl surface of the toilet bowl gradually increases as the sealing depth of the toilet increases. Therefore, the amount of change in the stored water level with respect to the change in the amount of stored water becomes smaller.

  In other words, when the toilet bowl is used as a water level measurement container as in this embodiment, the amount of water affected by the pressure fluctuation in the sewage pipe (water level change amount) varies depending on the difference in the sealing depth formed by the toilet bowl water. I understand.

A correction method that can be adopted in this embodiment will be described below.
In the first plan, the relationship between the pressure fluctuation and the water level change at a plurality of sealed water depths is measured in advance and the rate of change (corresponding to the slope a of the regression equation shown in Equation 11 above) is obtained. There is a method of using them as a representative value for correcting the measured value of the stored water level obtained by actual measurement.
FIG. 8 is a graph obtained by applying the method of the first plan and correcting the measured value of the stored water level at each sealing depth.

  This graph calculates the ball water level measurement value H2 'with respect to the pressure P1 of the trap part, sets the slope a for each water level, and corrects it with a different cross-sectional area ratio for each water level. This indicates that it can be converted to a 0 mmAqa state without any other.

In other words, even if pressure fluctuations occur in the sewage drain pipe and the ball water level actually measured changes, by measuring the pressure in the sewage drain pipe that caused the water level change, there is always no pressure fluctuation. It can be seen that it can be handled as a water level. As a result, even if there is a difference between the pressure in the sewage drain before and after urination and the pressure in the sewage drain during urination measurement, a water level in which there is no pressure fluctuation is always obtained in the sewage drain.
When this correction method using measured values at a plurality of sealing depths as the slope a of the regression equation is adopted, it is a correction that takes into account the shape information of the entire ball surface, and is thus set in advance from the corrected water level measurement value. The urination information such as urine volume and urine flow rate can be measured more accurately using the calibration relationship between the water level and the amount of stored water.

Next, as a representative value related to the change in the stored water level with respect to the pressure fluctuation in the sewage discharge pipe at each sealing depth, the correction processing of the present embodiment is performed using only the slope a of the regression equation at a single sealing depth. This will be described below as a second plan.
FIG. 9 is a graph in which the measured value of the stored water level is corrected by the method of the second plan.

  FIG. 8 applies the first proposal to correct the stored water level with a plurality of regression equations, but FIG. 9 shows only the regression equation of the sealing depth at the measurement start water level as a representative value of the regression equation. This is the correction of the water level at the reservoir. In other words, the water level is corrected using a regression equation that assumes that the water level is always at the measurement start water level, regardless of the height of the water level. It should be noted that the reason that the sealing depth that is representative in the example of this figure is that of the measurement start water level is that the device has a function to automatically set the measurement start water level, so the work of obtaining the regression equation is simplified. For this reason, it is also possible to use regression equations at other sealing depths.

  As a result, the depth of sealing, which is the water level at which the measurement is performed, becomes higher, and the correction amount shifts as the distance from the measurement start water level increases. However, since there is no need to set a regression relationship over the entire ball surface, there is no need to have many conversion tables for correction.Therefore, if an adaptation method is used depending on the required measurement accuracy, the control unit Simplification and cost reduction are also possible.

  Next, the method for removing the water level pulsation component in the correction of the measured value of the stored water level will be described in detail below.

FIG. 10 is a schematic diagram) of stored water in the configuration of this embodiment in a state where there is no pressure fluctuation in the sewage pipe.
From the right, the ball 106, the trap portion 108, and the measuring tube 119f are modeled. The pressure sensor 118 for measuring the stored water level is provided immediately below the measuring pipe 119f, but since the three water levels are the same because there is no pressure fluctuation, the same water level is measured. It has become

  Here, the pressure of the trap portion 108 is P1, and the cross-sectional area is S1. The pressure of the ball 106 is P2, and the cross-sectional area is S2. Since the measuring tube 119f is open to the atmosphere like the ball 108, the pressure is P2. The volume of the stored water 4 is V. Consider reciprocal vibration between the ball 106 and the trap portion 108. Since the water volume of the measuring tube 119f is considered to be sufficiently smaller than the water volume of the ball 106 and the trap portion 108, it is ignored. Now, when the equilibrium between the ball 106 and the trap part 108 is lost due to the pressure fluctuation of the trap part 108, the stored water reciprocates between the two in an attempt to return to the equilibrium state.

となることが知られている。本実施例に使用した便器の特性値 Ｓ１＝６．０３×１０^−３（ｍ^３）、Ｓ２＝３．１１×１０^−２（ｍ^３）、Ｖ＝２．２×１０^−３（ｍ^３）と、ｇ＝９．８（ｍ／秒^２）を代入すると、便器の溜水が持つ固有振動数が約２Ｈｚということが分かる。

It is known that Characteristic values of the toilet used in this example S1 = 6.03 × 10 ⁻³ (m ³ ), S2 = 3.11 × 10 ⁻² (m ³ ), V = 2.2 × 10 ⁻³ (m ³ ) And g = 9.8 (m / sec ² ), it can be seen that the natural frequency of the toilet water is about 2 Hz.

  On the other hand, the pressure fluctuation in the sewage pressure pipe is 1 to 3 Hz as described above, and since the natural frequency 2 Hz of the toilet water is within that range, the toilet water was generated in the sewage pipe. It can be seen that there is a possibility of resonance due to pressure fluctuation. It should be noted that the natural frequency of the water stored in the toilet bowl cannot be removed from the pressure fluctuation range in the sewage pipe if the characteristic values S1, S2, and V are changed within a practically practical numerical range.

FIG. 11 is a schematic graph comparing the vibration isolation effect due to the difference in the tube inner diameter size of the measurement tube of the present invention.
As shown in FIG. 11A, when the pressure fluctuation in the sewage pipe causes a vibration of about 1 to 3 Hz, the stored water in the toilet bowl also resonates and causes a similar vibration (pulsation). However, at this time, since one end of the measurement pipe 119f is open to the atmosphere, the stored water in the measurement pipe 119f does not behave so as to continue to vibrate inside the pressure guiding pipe 118a, and the pressure fluctuation in the sewage drain pipe does not occur. When stopped, the vibration of the accumulated water inside the pressure guiding tube 118a is immediately damped as shown in FIGS. 11 (b) and 11 (c).

  At this time, the water level of the measuring tube 119f also fluctuates due to the change in the water level of the ball 106. As shown in FIGS. 11 (b) and 11 (c), the fluctuation of the water level has a large amplitude when the tube diameter is thin. On the other hand, the response delay (phase shift) becomes small. Conversely, if the tube diameter is large, the amplitude is small, but the response delay is large.

  The measurement tube size may be selected depending on the response speed of the stored water level measurement system. In the measurement system used in the examples, the response delay was 0.2 seconds when the tube diameter was thin (φ4 mm), and the response delay was 1 second when the tube diameter was large (φ12 mm). Since the natural frequency of the stored water and the response delay as a system do not cause measurement errors, they should be equivalent, so it is reasonable to select the diameter of the measurement tube from about 4 mm to 12 mm. .

FIG. 12 is a diagram showing the detailed configuration of the measurement system of the embodiment of the urination information measuring toilet of the present invention and each water level in the water level behavior of the stored water.
The Western-style toilet 102 communicates with a ball 106 that receives the urine, feces, and the like of a subject, a rim water discharge nozzle 107 that discharges cleaning water from the rim portion of the ball 106, and the bottom of the ball 106, and seals the ball 106. A trap unit 108. The Western-style toilet 102 is disposed at the bottom of the ball 106, a jet water spouting nozzle 109 that ejects washing water toward the trap portion 108, a toilet seat 110 disposed at the top of the ball 106, a toilet lid 112, A urine collecting device 114 is provided on the rim portion of the ball 106. Further, a rim surface 106 a that contacts the toilet seat 110 is formed above the ball 106.

  During standby, the water level in the ball 106 of the urination information measuring toilet 101 is the measurement start water level indicated by Y. The measurement start water level Y is a water level in consideration of prevention of breakage due to pressure fluctuations in the sewage pipe, and is a position where the seal depth is 50 mm or more with respect to the breakwater level X2. The difference in the amount of accumulated water between the overflow water level H that is the position of the top 108a and the measurement start water level Y is the urine volume measurement range.

  In addition, although the measurement start water level was made into the position of the sealing depth of 50 mm in a present Example, it is not limited. By adding a safety factor to the atmospheric pressure ± 40mm water column, which is the upper limit of the pressure fluctuation in the sewage piping mentioned above, the ± 50mm water column is considered the pressure limit of the sewage pressure fluctuation. It is considered possible to be shifted to the part side, and at each measurement, the amount of accumulated water at the overflow water level H is set to the measurement start water level Y, and even when the pressure fluctuation is the pressure limit value, the accumulated water is brought to the trap part side. The idea may be to set the sealing depth to 25 mm so that the water level does not overflow and disappear.

  The ball portion water level measuring means of the present embodiment is configured to measure the accumulated water level with the pressure sensor as the pressure head pressure via the pressure conduit 118a. A semiconductor pressure sensor is used as the pressure sensor. However, since the strain state of the incorporated semiconductor diaphragm changes depending on energization and environmental temperature, a drift phenomenon in which the sensor output changes may occur. Since this drift phenomenon may always occur, in this embodiment, every measurement, calibration is performed as a preparatory operation immediately before the start of measurement to prevent the influence.

  Further, as described above, the calibration water supply is directly supplied to the measurement pipe 119f, but the pressure conduit 118a connected to the toilet flush water supply line to the measurement pipe 119f and the jet water discharge nozzle 107 is used. May be used as a calibration value when the measuring tube 119f overflows due to water supply due to back pressure from the toilet flushing water supply pipe at the time of toilet flushing.

  Here, since the stored water 4 and the water in the measuring pipe 119f are connected via the pressure conduit 118a, the water level in the measuring pipe 119f rises and falls according to the change in the water level of the stored water 4. If the pipe 118a / measurement pipe 119f has a small diameter, the change in the water level inside the measurement pipe 119f becomes sensitive to the change in the water level of the stored water, and the output of the pressure sensor 118 tends to pulsate. On the other hand, if the diameter of the pressure conduit 118a / measurement tube 119f is large, the change in the water level inside the measurement tube 119f with respect to the change in the stored water level becomes insensitive, and the output of the pressure sensor 118 is less likely to pulsate. That is, it was found that the sensitivity of the measurement system with respect to pressure fluctuation (pulsation) changes depending on the combination of the pipe diameters of the measurement pipe 119f with respect to the pressure conduit 118a.

  In this embodiment, not only the amount of urination but also the urinary flow rate, which is an index for judging the urination ability and is obtained as the temporal change rate of the water level of the stored water 4, is also measured. The influence of (pulsation) is great. Therefore, the pressure fluctuation (pulsation) is minimized by adjusting the pipe diameter of the pressure guiding pipe and the measuring pipe to the optimum one according to the required measurement accuracy.

  According to the applicant's confirmation, the maximum value of the urine flow rate associated with urination is 50 mL / second as a specification, and the result of selecting a toilet with a water volume of 3.5 L, the pressure conduit 118a φ7 mm, the measurement tube 119f φ4 mm, and the pressure conduit 118a It was confirmed that the throttle orifice φ2 mm provided in the middle of the process had good characteristics. The combination is not limited to this. The combination may be changed as appropriate depending on the target sensitivity and the amount of water stored in the toilet.

  Further, even if a throttle orifice for reducing the pipe diameter is added in the middle of the pressure conduit 118a, although the delay in the detection behavior of the pressure sensor 118 with respect to the change in the stored water level increases, the pulsation accompanying the change in the stored water level is transmitted to the pressure sensor 118. It became difficult and the influence of pressure fluctuation (pulsation) became small.

Further, the influence component of the pressure fluctuation (pulsation) measured by the pressure sensor 118 can be removed by a control filter, and the water level of the stored water can be corrected to a value when there is no pressure fluctuation.
As a control filter, not only a filter using a control program but also a filter using an electronic element such as a capacitor may be used.

  The difference in the amount of accumulated water before and after urination is the urine volume, and urination information such as urine volume and urine flow rate calculated by the urine information calculation means 18 incorporated in the control means 15 is displayed on the operation / display unit 122. As an output form, it may be printed out on paper from the printer 136, or output as electronic information to an electronic storage medium or a facility LAN. In addition, when using the urination information measuring toilet 101 of the present technology in a hospital, it is determined that the urine volume measurement value measured as a medical practice exerts mental pressure on the patient as a subject and adversely affects the patient's medical condition. It is also conceivable to omit the measurement result display function when the measurement is performed. Regarding the output form, the output specifications should be reviewed as appropriate, taking into consideration the needs of medical personnel who utilize the data, not the patient as the subject.

  In order to obtain the amount of accumulated water at that time from the measured ball part water level, it is necessary to obtain in advance a calibration curve that is the relationship between the amount of accumulated water at any ball part water level, but the Western-style toilet 102 is made of earthenware. Since individual differences are large in terms of shape, in this embodiment, a function for obtaining a calibration curve is provided to eliminate the inter-individual differences in the toilet bowl portion so that more accurate measurement can be performed.

  That is, the water level in the ball 106 is measured every predetermined time while the pump 119h sucks the water through the pressure conduit 118a and the on-off valve 119d and discharges it to the sewage pipe 9 via the drainage conduit 118b via the trap 119i. As a result, the calibration curve is set.

  Prior to the calibration curve setting operation, a washing operation for discharging foreign matter in the stored water is performed to prevent the foreign matter in the stored water from being sucked. The calibration curve setting operation is performed at night when the possibility of using the urination information measuring toilet 101 is low, or during regular inspections performed every predetermined period. By adopting such a configuration, there is no labor for setting the calibration curve, and the labor of the construction worker and the performance / function maintenance manager is not bothered. As a method for setting the calibration curve, not only the method of draining the accumulated water 4 of the ball 106, but also manually or automatically, a predetermined amount of water is poured into the ball 106 in a plurality of times, and the calibration of the water level and the accumulated water amount is performed. You may make it ask for a relation.

  The pressure fluctuation state in the sewage pipe is measured by a pressure sensor 121 provided in the drainage pipe 118b as a sewage pressure fluctuation measuring means. Since the purpose of the pressure sensor 121 is to grasp the water level difference between the ball portion and the trap portion of the stored water 4, a type for measuring the pressure difference with respect to the atmospheric pressure is selected.

  In this embodiment, the pressure sensor that directly measures the pressure fluctuation in the sewage pipe is used as the sewage pressure fluctuation measuring means, but the amount of influence that the sewage pressure fluctuation has on the water level change of the toilet sewage is grasped. Therefore, it is also possible to employ a configuration in which the difference between the stored water levels of the ball 106 and the trap portion 108 as a result of being affected by fluctuations in the sewage pressure is measured. In that case, a configuration using a non-contact type ultrasonic sensor for measuring the stored water level or a configuration in which a water level detection electrode is arranged may be selected.

  FIG. 13 is a flowchart showing the operation of this embodiment. FIG. 14 is a timing chart showing the relationship between the elements of this embodiment. The operation of the urination information measuring toilet in the present embodiment will be described with reference to FIGS. 13 and 14.

When the subject approaches the vicinity of the urination information measuring toilet, the operation / display unit displays a waiting state.
When the subject performs a measurement start operation in S101, the display of the present apparatus is switched from “standby” to “preparation for measurement”, and the apparatus enters a measurement mode and starts a measurement preparation operation.

    The measurement start operation is not only the operation / switch operation of the display unit as in this embodiment, but also a configuration means for generating a commonly used activation signal such as by inserting an ID card or holding an ID tag. Applicable if available. Since this apparatus is often used in medical institutions, it is desirable to have a method that can acquire personal information and time information at the same time.

  S102 is a step of calibrating the pressure sensor 118 for measuring the level of the stored water and the pressure sensor 121 for measuring the fluctuation of the sewage pressure as one of the measurement preparation operations. The pressure sensor 118 that measures the accumulated water level recognizes the output value with respect to the water level in the measurement tube 119f. That is, the water stored in the auxiliary tank 119k is guided to the measuring pipe 119f through the pump 119l, the on-off valve 119m, and the on-off valve 119n. The guided water rises to the branching portion 119q of the measuring tube 119f that is open to the atmosphere at one end, and then is discharged to the drain socket 10 through the trap 119i and the drain conduit 118b.

By this operation, the inside of the measuring tube 119f is filled with water up to the height of the branching portion 119q. Accordingly, since the height of the branching portion 119q is always constant and known, the pressure sensor 118 that measures the level of the stored water connected to one end of the measuring tube 119f measures the water level inside the measuring tube 119f at this time. Perform home calibration. As described above, the pressure sensor 118 can measure the water level as an absolute position by performing the calibration in comparison with the water level of the measuring tube 119f which is always constant pressure.
In addition, the pressure sensor that measures the sewage pressure fluctuation is also calibrated at this time with reference to the atmospheric pressure.

  Next, as a preparation for measuring the stored water level, the control unit 120 closes the on-off valve 119m and the on-off valve 119n that have passed through the measurement pipe 119f, and opens the on-off valve 119b. As described above, when the preparation operation described so far is completed, the display on the operation / display unit 122 becomes “measurable”.

After the display changes to “measurable”, the subject performs a measurement start operation in step S103 and starts a urination operation. At this time, the display becomes “measuring”. The water level before the start of urination is the measurement start water level Y at which the amount of urine can be measured until the trap portion overflows. In step S104, the pressure sensor 118 measures the accumulated water level that rises with urination, and the sewage pressure fluctuation during urination is continuously measured with the pressure sensor 121 from the start of measurement.
When the subject urinates to the ball 106, the water level in the ball 106 rises to the water level Z as shown in FIG.

  After the urination is finished, when the subject operates a urination end switch (not shown) of the operation / display unit 122 in step S105, the control unit 120 stores the measurement result in the storage unit in step S106 and the operation / display unit. The mode display of 122 is changed from “measuring” to “measuring measurement”, and the water level measurement is finished.

  The end of urination may be determined not only by the subject's switch operation but also by detecting that there is no change in the water level for a predetermined time. At this time, the mode display of the operation / display unit 122 may be a display prompting the toilet cleaning operation of the subject after the measurement from “measuring” to “toilet bowl cleaning”. In particular, as in this embodiment, when the measurement start water level is set as a preparatory operation for the next measurement after the measurement is completed, this is effective for preventing trouble at the start of the next measurement. Further, a toilet cleaning switch may be provided as a test completion operation switch for the subject, and a start operation of a toilet cleaning step, which is the next operation step, may be used.

  When the above measurement mode ends, a series of toilet operations such as toilet flushing, and measurement data processing that removes the amount of influence of pressure fluctuation in the sewage pipe from the measured stored water level fluctuation data to obtain true stored water level fluctuation data The operations are performed in parallel. First, the measurement data processing operation will be described below.

  In step S107 and subsequent steps, two kinds of influences (water level shift component and water level pulsation component) due to sewage pressure fluctuations are removed from the measured accumulated water level fluctuation data to perform processing to obtain true accumulated water level fluctuation data. is there.

  The measured stored water level fluctuation data has a certain delay time (phase shift) with respect to the actual sewage pressure fluctuation, as described above, due to the responsiveness of the adopted water level measurement system. . Therefore, the following processing uses the pressure fluctuation value in the sewage pipe at the time 0.2 seconds before, for example, if the measurement system is delayed by 0.2 seconds (out of phase) with respect to the pressure fluctuation in the sewage pipe. To correct the accumulated water level fluctuation data.

First, the temporal variation data of the stored water level variation measured and stored in step S107 and the corresponding temporal variation data of the sewage pressure variation are called up.
Next, the water level pulsation component is removed from the temporal variation data of the stored water level fluctuation measured in step S108. Here, the pulsation component of 1 to 3 Hz included in the fluctuation of the stored water level is removed, and the data before the sewage pressure fluctuation correction including the steady component of the sewage pressure fluctuation is taken out.

  S109 is a step of converting the stored water level fluctuation data into a state without pressure fluctuation in consideration of the water level shift component included in the sewage pressure fluctuation. True water level fluctuation data is obtained by the above processing.

  In addition, if the configuration in which the measurement system of the stored water level follows the pressure fluctuation in the sewage pipe including the unsteady component is adopted, the above steps (S107 to S109) are deleted and the measurement is performed at each time. The stored water level can also be corrected and recorded in real time without pressure fluctuation. However, since the measurement system of this system has a response delay, after measuring the accumulated water level data over time, the accumulated water level time data is used as the secular pressure fluctuation data over time. In this flow, the correction is performed collectively so that there is no pressure fluctuation.

  S110 is a step of calculating urination information such as urine volume and urine flow rate. The water level information obtained at S109 for each time is converted into the amount of accumulated water by a calibration curve indicating the relationship between the accumulated water level and the amount of accumulated water obtained in advance, and the difference in the amount of accumulated water before and after urination becomes the amount of urine. Further, when the time fluctuation data of the stored water level is differentiated with respect to time, the urine flow rate fluctuation can be obtained. Specifically, the difference in the amount of accumulated water every second is the urine flow rate.

  S111 is a step of outputting the measurement result. Various urination information is displayed on the urine information remote controller 134 as a measurement result. The display of the measurement result may be printing on paper, storage on an electronic medium, information transmission to a communication line, and the like.

The measurement result data processing operation is thus completed.
Next, the operation of the toilet system such as toilet cleaning will be described.

  In S105, the toilet cleaning is started by the measurement end operation of the subject. Note that a toilet cleaning operation step may be provided separately from the measurement end operation to start toilet cleaning. Further, when the user leaves the seat as it is after the measurement end operation, toilet cleaning may be automatically performed after a predetermined time has elapsed.

  When the measurement end operation is carried out, in step S201, the accumulated water and excrement are sent to the sewage pipe by the siphon phenomenon caused by the jet water discharge. First, water supplied from the flow path switching means is supplied to the rim side, and the water level of the ball is raised to the vicinity of the full water level W of the trap portion 108. Next, a siphon phenomenon is generated by jet water discharge, and excreta and stored water are discharged into a sewer pipe.

  In this embodiment, the output configuration operation of the pressure sensor 118 for measuring the stored water level is performed in step S102 immediately before the start of the measurement. In this step, the back pressure during the jet water discharge is implemented by opening the pressure conduit 118a. The absolute value of the pressure sensor 118 may be calibrated by overflowing the measurement tube 119f and discharging it to the drainage conduit 118b to create a calibration water level. It is also possible to cause the measurement tube 119f to overflow at this point, and to assume that the measurement tube 119f is full at the next measurement, and to omit the operation of filling the measurement tube 119f during the preparatory operation. Such a method can also be employed when the use interval is short and the drift amount of the pressure sensor and the evaporation amount of the measurement tube 119f can be ignored.

  S202 is a step of creating a measurement start water level. After excrement is sent to the sewage pipe, rim water supply is performed again to return the ball level to the measurement start water level. At this time, since the rim water supply system used for normal toilets is not sufficient for the accuracy that this device aims to achieve, the water supply is temporarily stopped until the water level just before the target measurement start water level, and the reservoir at that time is stored. After checking the water level, the insufficient amount of accumulated water is supplied from the replenishing tank toward the ball by activating the on-off valve 119m and the pump 119l. As a result, an accurate reproduction of the measurement start water level is realized, so that both prevention of breakage against fluctuations in the sewage pressure and prevention of changes in the measurement range due to changes in the measurement start water level can be achieved. When the measurement start water level is restored and the next subject is ready for measurement again, the display switches to “waiting for measurement”.

  The series of operation sequence ends when the measurement start water level is set, and the next test subject is waited for.

It is a perspective view which shows the whole urination information measuring toilet in 1st embodiment which implemented this invention. It is a block diagram which shows the whole structure of this embodiment. In this embodiment, it is a schematic diagram explaining the influence which the sewage pressure fluctuation | variation has on the measurement of a stored water level. It is the schematic diagram which showed the behavior of the stored water by the pressure fluctuation in the sewage piping in a present Example. It is a schematic diagram which shows the relationship between the sewage pressure fluctuation | variation at the time of a sewage pressure fluctuation | variation, and a stored water level measurement value. It is a schematic diagram which shows the state which correct | amended the sewer pressure fluctuation with respect to the stored water level measurement value. It is a graph which shows the actual measurement value of the stored water level when the sewage pressure fluctuates. It is the graph which applied the 1st plan and correct | amended the stored water level with the several regression equation. It is the graph which applied the 2nd plan and correct | amended the stored water level measurement value by one regression type. It is a schematic diagram of the stored water in the structure of a present Example of a state without the pressure fluctuation in sewage piping. It is a schematic graph of the vibration isolation effect by the difference in the pipe | tube inner diameter size of the measurement pipe | tube of this invention. It is the figure which showed each water level in the detailed structure of the Example of the urination information measurement toilet of this invention, and the water level behavior of stored water. It is a flowchart which shows operation | movement of a present Example. It is a timing chart which shows the relationship of each element of a present Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 .... Toilet bowl 2 .... Ball 3 .... Rim 4 ... Reserved water 5 ... Trap part 6 ... Water level setting means 7 ... Rim Water discharge nozzle 71... Rim water discharge means 8... Jet water discharge nozzle 81... 91... Replenishment means 10... Drain socket 14... Reserved water level measurement means 14 a ... Vibration isolation means 14 b ... Calibration means 15 ... Control unit 16. Water pressure fluctuation measurement means 17... Measurement value correction means 18... Urination information calculation means 22... Operation / display unit 101 .. Urination information measurement toilet 102. · Cabinet 106 · · · Ball 106a · · · Rim surface 107 · · · Rim water discharge nozzle 1 8 ... Trap unit 108a ... Top 109 ... Zet water discharge nozzle 110 ... Toilet seat 112 ... Toilet lid 114 ... Urine collection device 114a ... Urine collector 114b ... Urine collection arm 114c ... Urine collection unit 114d ··· Urine component measuring section 116 ··· water channel switching means 118 ··· pressure sensor 118a · · pressure conduit 118b · · trap conduit 119b · · open / close valve 119d · · open / close valve 119f · · measurement tube 119h · · pump 119i・ ・ Trap 119j ・ ・ Foreign matter removing means 119k ・ ・ Auxiliary tank 119l ・ ・ Pump 119m ・ ・ Open and close valve 119n ・ ・ Open and close valve 119o ・ ・ Branch fitting 119p ・ ・ Open and close valve 120 ・ ・ Control unit 121 ・ Pressure sensor 122 ... Operation / display unit 132 ... Sanitary washing device remote control 134 ... Urination information measurement Fixed part remote control 136 ... Printer A ... Measurement tube cross section H ... Overflow water level g ... Gravity acceleration H1 ... Trap water level H1 '... When pressure changes Trap water level Δh1 ... trap water level change amount when pressure fluctuates H2 ... ball water level H2 '... ball water level when pressure fluctuates Δh2 ... ball water level change amount when pressure fluctuates P1 ... Pressure in sewage piping P2 ··· Atmospheric pressure Q ··· Reservoir volume S1 ··· Cross section of trap part S2 ··· Ball cross-sectional area V · · · Reservoir volume W ···・ Full water level X ・ ・ ・ Air level X2 ・ ・ ・ Sealing water level Y …… Measurement start water level Z …… Water level after urination ρ ・ ・ ・ ・ ・ Water density

Claims (8)

A ball that receives the subject's urine;
A trap section for communicating the ball and a sewage pipe for discharging the accumulated water in the ball, and forming a stored water for sealing the sewage pipe;
Ball part water level measuring means for measuring the water level of the ball part stored water which is the stored water level on the ball side of the stored water;
Sewage pressure fluctuation measuring means for measuring the effect of pressure fluctuation in the trap on the water level in the ball;
Urination information measuring means for measuring urine volume or urine flow rate based on the measured value of the ball water level measured by the water level measuring means when the subject urinates to the ball;
In the urination information measuring toilet,
Based on the measured value of the sewage pressure fluctuation measuring means,
The ball part water level measurement value measured by the ball part water level measurement means,
A toilet for measuring urination information, characterized by comprising measurement value correcting means for correcting by a preset correction relational expression. The urination information measuring toilet according to claim 1, wherein the ball portion water level measuring means is a pressure sensor provided in a pressure guiding line connected to the accumulated water. The urine information measuring toilet according to claim 1, wherein the sewage pressure fluctuation measuring means is a sewage pressure measuring means for measuring a pressure in a sewage pipe through the trap portion. The correction relational expression is for the pressure fluctuation in the sewage pipe measured by the sewage pressure fluctuation measuring means.
2. The urination information measuring toilet according to claim 1, wherein the relationship between the water level changes in the plurality of ball portion water levels measured by the water level measuring means is obtained. 2. The correction relational expression is obtained by obtaining a relationship of a change in water level at a urine volume measurement start water level with respect to a pressure fluctuation in a sewage pipe measured by the sewage pressure fluctuation measuring unit. Urinal information measuring toilet described. The ball part water level measuring means has a ripple noise removing means for the accumulated water,
The ripple noise removing means is
The urination information measuring toilet according to any one of claims 1 to 5, wherein a noise component of the ball part water level measuring means output measured by the pressure sensor is removed in a controlled manner. The ball part water level measuring means has a ripple noise removing means for the accumulated water,
The ripple noise removing means is
The urination information measuring toilet according to any one of claims 1 to 5, wherein the toilet tube is a water column pipe having one end connected to the pressure guiding conduit and the other end open to the atmosphere. The pressure due to the water level when the water column pipe is full,
8. The urination information measuring toilet according to claim 7, wherein the toilet is used for output calibration of the ball portion water level measuring means.

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