• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
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  • 优先权
    • 专利摘要:
    METHOD AND SYSTEM FOR THE DETECTION OF URINE AND/OR FACES. The invention relates to a method for detecting urine and/or faeces comprising: - detecting the concentration of at least one urine indicative gas component and the concentration of at least one faeces indicative gas component. The method comprises: recording, for each gas component, a characteristic (10, 11) corresponding to the variation over time in the concentration of each gas component; comparing said corresponding predetermined registered characteristic (12, 13); indicating registered characteristic (10, 11) with a characteristic for the gas component a presence of urine if that of the at least one indicative urine gas component generally conforms to the predetermined characteristic of the same gas component; and indicate a presence of faeces, if the recorded characteristic (10, 11) of at least one gas component indicative of faeces generally conforms to the predetermined characteristic (12, 13) of the same gas component. The invention also relates to a system for detecting urine and/or faeces.
    公开号:BR112015015008B1
    申请号:R112015015008-0
    申请日:2012-12-21
    公开日:2021-05-04
    发明作者:Carney Joshua；Johansson Pãr；Jonsson Anders
    申请人:Essity Hygiene And Health Aktiebolag；
    IPC主号:
    专利说明:

    FIELD OF THE INVENTION
    [001] The present invention relates to a method for detecting urine and/or feces which comprises detecting the concentration of at least one urine indicative gas component and the component concentration of at least one fecal indicative gas.
    [002] The invention also relates to a system for detecting urine and/or feces, comprising a sensor unit comprising at least one gas sensor for detecting the concentration of a gas component indicative of urine and at least one sensor of gas for detecting the concentration of a gas component indicative of faeces, and a receiving unit connected to the sensor and arranged to provide an indication of any presence of urine and/or faeces based on information from said sensors. BACKGROUND OF THE INVENTION
    [003] Carriers of absorbent sanitary articles in the form of a diaper or an incontinence pad are often not in a state where the article can be changed, or even in a state where they perceive that such article needs to be changed. They are therefore dependent on escorts in order to detect that a fecal or urinary incident has occurred and that there is a need to replace their sanitary article. This is the case both for babies who wear diapers and also for adults in nursing homes or hospitals who are unable to manage their own personal hygiene and change their own diaper or incontinence pad due to incompetence, dementia or physical disabilities. Thus, a reliable method for detecting fecal and/or urinary insults is of great importance and necessity.
    [004] A system for reliably detecting urine and/or feces would simplify the task of knowing when to change a diaper or incontinence pad for a caregiver.
    [005] A system to detect the occurrence of fecal and/or urinary incontinence could also be used in other situations, for example, in a facility such as a public toilet, in order to detect the existence of a need for cleaning in the said installation.
    [006] It is known that feces are often associated with pungent odors. The odors are due to a complex mixture of compounds produced by the action of bacteria that results in odorous gases being emitted. Gases with a strong odor emitted by feces include gases such as indole, skatole and mercaptans, as well as hydrogen sulfide and ammonia. In particular, heavy organic compounds such as mercaptans (methyl sulfides) and hydrogen sulfide can spread widely and remain in an enclosure after a fecal insult has occurred. Hydrogen gas is also associated with faeces, but it is a volatile gas and therefore does not travel as far or stay as long as heavier gases.
    [007] Urine is associated with the odor of ammonia gas, which is due to urea breakdown.
    [008] It is previously known that gases that are associated with feces and urine can be detected in order to detect the occurrence of a fecal and/or urinary insult. Patent application WO 2012/126507 A1 discloses a fecal incontinence control system through the use of a hydrogen gas sensor that is detachably attached to a sanitary article such as a diaper. The system also includes a signaling device adapted to emit a signal when the level of hydrogen gas detected by the sensor is above a threshold value.
    [009] Furthermore, US patent 5,709,222 describes a body waste detector that includes a gas sensor, which is adapted to detect the presence of at least one gas associated with urine and at least one gas associated with feces throughout a predetermined time interval. After that, the detector indicates the presence of urine and/or feces.
    [0010] With reference to the technology in the state of the art, there is a need for improved systems and methods to detect the presence of urine and/or feces. In particular, there is a need for improved systems and methods by which it is possible to distinguish between urinary and faecal incontinence with a high level of accuracy and which are easy to use. DESCRIPTION OF THE INVENTION
    [0011] Therefore, it is an object of the present invention to solve the aforementioned problems and provide an improved system and method to detect the possible presence of urine and/or feces with high accuracy and reliability. In particular, it is an object of the invention to provide a method by which it is possible to distinguish between fecal or urinary incontinence and with high accuracy. These objects are achieved by matter as set out in the independent claims.
    [0012] More precisely, the invention relates to a method for detecting urine and/or feces comprising: detecting the concentration of at least one urine indicative gas component and the concentration of at least one fecal gas indicative component . The method also comprises: recording, for each gas component, a characteristic corresponding to the variation over time in the concentration of each gas component; comparing said registered characteristic with a predetermined characteristic for the corresponding gas component; indicate a presence of urine if the recorded characteristic of at least one urine indicative gas component generally conforms to the predetermined characteristic of the same gas component; and indicate a presence of faeces, if the recorded characteristic of at least one gas component indicative of faeces generally agrees with the predetermined characteristic of the same gas component.
    [0013] The invention can be used in homes to detect when incontinence has occurred, and what type of incontinence it is. In addition, it can be used in homes for the detection of fecal and/or urinary insults by children wearing a diaper. It can also be used in public restrooms to identify the occurrence of urinary and/or faecal contamination.
    [0014] According to one embodiment, the aforementioned predetermined characteristic varies over time and the registered characteristic is determined to conform to the predetermined characteristic, if the registered characteristic follows the variation over time of the predetermined characteristic . The presence of a fecal or urinary incident is indicated if the registered characteristic generally conforms to the predetermined characteristic. Therefore, it is also possible to determine whether the gas comes from flatulence or fecal discharge, since the same gas compound from the two may have different concentration characteristics after an incident.
    [0015] Indication of any presence of urine and feces, respectively, may include determining whether the concentration of each gas component exceeds a predetermined threshold value for a predetermined period. As an example, it can be determined that the concentration is greater than a relatively high threshold value during a time interval directly following the incident and greater than another relatively low threshold value over a time interval following the first time interval. Such a registered characteristic may obey a predetermined, expected characteristic of hydrogen gas following a fecal incident. Thus, the reliability of the method of determining the presence of urine and/or faeces is higher than measuring the gas only once.
    [0016] In another aspect the method comprises determining whether a derivative of the characteristic registered during a predetermined period of time generally corresponds to a corresponding expected derivative of the predetermined characteristic. Derivatives of characteristics, i.e. corresponding to concentration curves according to the embodiment, are indicative of the volatility of the gases and therefore can be used to distinguish between different gases.
    [0017] Derivatives are not dependent on the gas level, characteristics or properties of the gas following an incident. In this way, the accuracy of the method is ensured regardless of whether the off-gas concentration is high or low. With other methods where the recorded value is measured against a threshold value, it may not be possible to detect a low discharge, representing a minor incontinence, ie a low presence of urine or faeces, if the threshold value is too high.
    [0018] The method may further comprise detecting the concentration of at least two gas components indicative of feces, recording a specific characteristic corresponding to the variation over time of the concentration of the gas component for each gas component indicative of feces , combining the recorded separate characteristics, comparing the recorded characteristics combined with a predetermined combination of characteristics, and indicating the presence of faeces if the combined recorded characteristics generally agree with the predetermined combined characteristics.
    [0019] If a combination of two gases indicative of faeces and/or urine is used, the method may also include assigning a weight value to each of the separate recorded characteristics before combining the characteristics. In this way, more accurate detection of urinary and fecal incontinence is provided.
    [0020] An example of two suitable gases are non-volatile hydrogen sulfide and volatile hydrogen gas. These have different characteristics and if both of these characteristics are detected then the presence of stool can be indicated. Thus, the accuracy of the method is higher than basing the presence of stool on detecting only one gas indicative of stool. The presence of two gases in combination also excludes the possibility that the gas will be detected based on a gas leak, a nearby diaper wearer, toilet, etc.
    [0021] In accordance with the method of the invention it is also possible to detect at least two urine indicative gas components, record a specific characteristic corresponding to the variation over time of the component gas concentration for each urine indicative gas component, combine separate registered characteristics, compare the registered combined characteristics with a predetermined combined characteristic, and indicate the presence of urine if the registered combined characteristic generally conforms to the predetermined combined characteristic.
    [0022] A more accurate detection is, consequently, more reliable. A more reliable method is valuable in environments where individuals are dependent on other people to change their sanitary items and caregivers or relatives are therefore dependent on checking whether the individual has had an incident of incontinence. A method such as that of the present invention allows a caregiver to easily detect whether incontinence has occurred, and can thus easily decide whether the sanitary article should be changed. The method described also distinguishes between different types of insults. It is possible that the routine for a nursing home says that a diaper should only be changed if a fecal insult has occurred and not if a urinary insult has occurred. In such situations, being able to use a method that can reliably distinguish between the two is very useful and therefore a big advantage over other methods, such as manually relying on someone's nose for odors to occur, or visually inspecting the inside of each diaper.
    [0023] Preferably, the urine indicative gas component is ammonia gas and the faeces indicative gas component is chosen from the group comprising hydrogen gas, hydrogen sulfide and an organic gas compound. Ammonia is preferred as an indication for urine, as ammonia is only present in urine. Hydrogen gas and hydrosulfide gas in combination are preferred as an indication of faeces, as the two concentration characteristics differ from each other, and are therefore distinctly detected. The combination of the two characteristics is stool specific.
    [0024] The method of detecting urine and/or feces as described may also comprise providing a sensor unit, comprising gas sensors for each of the gas components, and transmitting information on the detection of the gas components to from the sensor unit to a receiver unit. Gas sensors are preferably arranged in such a way that they detect the presence of gas from faeces or urine. Thus, they are preferably arranged in the diaper, on the diaper wearer's belt, on the bed or on the wall near a possible source of urine and/or fecal insult, i.e., the diaper wearer or a toilet seat.
    [0025] To make it easier for the caregiver, the method can compare each registered characteristic with the predetermined characteristic in the receiving unit; and present visual or audible information at the receiving unit to indicate whether urine and/or feces have been detected. In this way, the caregiver can easily receive information about incidents and decide whether diapers need to be changed or not.
    [0026] The receiving unit can also receive information from several sensor units, that is, sensor units used by several patients bedridden in a hospital ward or from several sensor units placed in a bathroom cubicle. Thereby, the user can receive information about several sensor units at the same time by the receiver unit, and in the case of incontinence, a caregiver can receive information about several patients simultaneously.
    [0027] Information can also be sent to a remote server unit. The remote server unit can be placed in a staff room or in a hallway such that a user of the system does not have to be in the diaper wearer's room to assess whether there is a need for a diaper change. The system can also be used in a public restroom in such a way that the user can determine before entering the restroom whether a toilet has been used and therefore whether it needs a thorough cleaning.
    [0028] The principles of the invention can be implemented in larger networks comprising different facilities, for example, several hospitals or hotels or similar places. In such a case, numerous departments or rooms can be connected to a network, for example in the form of a wireless data communication network, in order to allow detection of urinary and faecal insults and transmit information related to one or more central remote servers. This communication can allow, for example, the planning of personnel and cleaning operations in an efficient and centralized way.
    [0029] The time of the incident can also be recorded and determined based on the detection of components of gases indicative of feces and/or urine. In this way, information about when the incident happened can be monitored, and the time that has passed since the incident occurred can also affect how often a soiled diaper should be changed.
    [0030] The invention also relates to a system for detecting urine and feces, comprising a sensor unit comprising at least one gas sensor for detecting the concentration of a gas component indicative of urine and at least one gas sensor for detecting the concentration of a stool-indicating gas component and a receiving unit connected to the sensor and arranged to provide an indication of the presence of urine and/or stool based on information from the sensors.
    [0031] According to the invention, the receiving unit is arranged to record, based on the concentration detected for each gas component, a characteristic corresponding to the variation over time of the concentration of the gas component, and compare the characteristic with a predetermined characteristic indicative of urine and feces, respectively. In this way, the presence of urine and/or feces can be detected with great precision and reliability.
    [0032] The receiving unit may comprise an indicator to provide visual or auditory information as to whether urine and/or feces have been detected. In this way, the user, such as a caregiver or a cleaning agent, can easily detect that an incident has occurred. The user can also easily distinguish between a urinary and fecal insult by monitoring the receiving unit, and should not rely on manual detection by smell or visual inspection. The receiving unit can be a mobile unit, such as a mobile phone, tablet computer or the like.
    [0033] The system may further comprise a remote server unit connected to the receiving unit to store information from the gas sensors. Thus, information can be collected and compiled over time, and statistics can be generated. In this way, it may be easier to predict when an incident by a patient using a toiletry item might occur, or to decide how often a toilet should be cleaned based on statistics of how often urinary and/or faecal incidents occur. Such statistics could help staff in planning their work. It can also help to calculate the number of employees needed at different times or in different locations.
    [0034] According to an embodiment, the invention can be used for detecting only feces, comprising a sensor unit comprising at least two gas sensors for detecting the concentration of at least one of the two indicative gas components and a receiver unit connectable to the sensor and arranged to provide an indication of any presence of feces based on information from said sensors. In such a system, the receiving unit is arranged to record, based on the information and for each gas component, a characteristic corresponding to the variation over time in the concentration of the gas component, and compare the characteristic with a predetermined characteristic indicative of faeces , respectively. The system provides better detection of the presence of stool compared to systems where only one gas sensor is used, or where the presence is based on the concentration recorded above a threshold value rather than conforming to a predetermined characteristic. The characteristic of concentration, as it varies with time, is a better indication of the specific gas coming from a stool source than just a concentration above a momentary threshold. BRIEF DESCRIPTION OF THE DRAWINGS
    [0035] The invention will be described below with reference to an embodiment and the attached drawings, in which:
    [0036] Figure 1 shows a schematic view of a system according to the invention; and
    [0037] Figure 2 shows a schematic view of two registered features and two predetermined features, as used in accordance with the method of the invention. DESCRIPTION OF ACHIEVEMENTS OF THE INVENTION
    [0038] Figure 1 shows an embodiment of the present invention. A sensor unit (1) is arranged in association with a sanitary article (2), preferably an absorbent article such as a diaper in Figure 1. In a preferred embodiment, the sensor unit (1) is arranged next to a bed in which an incontinent user, i.e. a user of the sanitary product (2) is confined. Alternatively, the sensor unit (1) could be worn by the user in a belt around the waist, in a bag, or by any other suitable process, as long as the sensor unit (1) is positioned in close proximity to the user's body. .
    [0039] The sensor unit (1) comprises a first gas sensor (3) for detecting a gas indicative component of feces and a second gas sensor (4) for detecting a gas indicative component of urine . Alternatively, the sensor unit (1) can be provided with two or more gas sensors for detecting gas components indicative of faeces, and/or with two gas sensors for detecting gas components indicative of urine. In this way, the sensor unit can detect one of the gas components emitted by an insult (5) in the diaper (2), regardless of whether it is a urinary or fecal insult (5). The sensor unit (1) is connected to a receiving unit (6), which is preferably a mobile unit, such as a mobile phone, a tablet computer, a PDA, a laptop computer or the like.
    [0040] The connection between the sensor unit and a receiver unit is preferably wireless, and may be based on suitable wireless technology, such as Bluetooth or ZigBee. Such near-field communication technologies are well known to the person skilled in the art, and for that reason are not described in detail here.
    [0041] The receiving unit (6) receives data from the sensor unit in relation to a concentration of urine indicative gas component and feces indicative gas component, and records a characteristic corresponding to each respective concentration over time. According to one embodiment, a "characteristic" is to be considered as a series of gas concentration values sampled at a corresponding number of points in time, i.e. a pattern of concentration values, which form a set of characteristics distinguishing gas concentration. According to one embodiment, these distinguishing features are in the form of curves or patterns, as indicated in Figure 2.
    [0042] The characteristics recorded are compared to predetermined characteristics indicative of urine or feces, respectively. The mobile unit (6) comprises an indicator to provide visual information to the user as to whether a urinary and/or fecal insult (5) has been detected in the sanitary article (2). Thus, the user of the receiving unit (6), who in many cases is a caregiver, a nurse or similar, can decide whether it is appropriate to change the sanitary article (2) or not.
    [0043] The receiving unit (6) is further connected to a remote server unit (7). The receiving unit (6) is arranged to transmit the data received from the sensor unit (1) further on to the remote server unit (7). The remote server unit (7) can be arranged in a staff room or hallway so that information from the receiving unit (6) is available and stored in a central location. Based on the measurements of the sensor unit (1), the user of the receiver (6), eg a caregiver, can thus be notified that a fecal incident (5) has occurred at a specific location (ie where the sensor unit (1) is located), and go there to change the sanitary article (2). The remote server unit (7) also stores time information such that urinary and/or fecal incident (5) statistics are saved.
    [0044] Figure 2 shows an example of measurement by means of the invention, in which two registered characteristics (10), (11) are shown as registered by the sensor unit (1). These registered characteristics (10), (11) will be described in detail below. In Figure 2, the registered characteristics (10), (11) are indicated as solid lines, as corresponding predetermined, or "expected" characteristics (12), (13), which are intended to be compared with the registered characteristics (10) , (11) are shown in the form of broken lines.
    [0045] In this example, the sensor unit (1) is provided with two gas sensors (3), (4) for the gas components indicative of feces; hydrogen gas (H2) and hydrogen sulfide gas (H2S). In Figure 2, the registered characteristic (10) corresponds to the measured concentration of the hydrogen gas component over time, and the registered characteristic (11) corresponds to the measured concentration of the hydrogen sulfide gas component over time.
    [0046] Other gas components, indicative of urine or feces, can be illustrated in a similar way.
    [0047] Figure 2 also shows the predetermined characteristics (12), (13), corresponding to an expected characteristic according to the two gas components indicative of feces. The registered characteristics (10), (11) are compared to the predetermined characteristics (12), (13), as indicated schematically in Figure 2. This comparison is preferably carried out in the receiving unit (6). If the registered characteristics (10), (11) are generally in accordance with the predetermined characteristics (12), (13), then the presence of faeces is indicated by means of the receiving unit (4).
    [0048] In the example illustrated in Figure 2, an indication of the presence of feces will be given if the registered characteristic (10) is in accordance with the predetermined characteristic (11), which can be confirmed by determining whether the concentration of the component (10) of the registered characteristic exceeds a first predetermined value (c1), which is indicated by reference (14) along the predetermined characteristic (12), and continues to be greater than said threshold value ( c1) during a first predetermined period of time (t1). An indication of the presence of faeces can correspond to this simple comparison, ie, determining whether the concentration exceeds the threshold value (c1) during the first time period (t1). In order to provide a more accurate process for determining the presence of faeces, an additional comparison can be made; if the concentration of the gas component of the registered characteristic (10) exceeds a second predetermined value (c2) (as indicated by reference number (15)) during a second predetermined period of time (t2), this is also interpreted as an indication of the presence of stool. If both concentration values (c1), (c2) are exceeded during the corresponding time periods (t1), (t2), the registered characteristic (10) is considered to conform to the predetermined characteristic (11).
    [0049] Other measures and comparisons of when predetermined concentration values exist for predetermined time periods can be used to provide an even more accurate method for indicating the presence of stool.
    [0050] The characteristic can be predetermined based on a concentration standard curve that has been measured and determined for a specific gas based on repeated tests following a specific type of incident, or any other suitable way of predetermining the pattern.
    [0051] Each gas indicative of urine or feces has an individual concentration distribution curve, that is, a characteristic that follows a urinary or fecal incident. The gas can be present in a high concentration at first and then quickly dissolve in the atmosphere, ie the concentration decreases rapidly. This is the case, for example, of volatile hydrogen gas following a fecal incident. Other gases may be present at a relatively low level for the same period of time after the incident, ie the decrease in gas concentration is slow. This is the case for heavy organic gases and hydrogen sulfide following a fecal incident. The concentration curves following an incident are therefore indicative of each gas. By recording the characteristic over time of the concentration of a specific gas, and comparing the characteristic with an expected predetermined characteristic, it is possible to determine the presence of the gas and thus confirm the presence of an incident.
    [0052] An accurate determination of the presence of an incident can help determine when a diaper should be changed, thus leading to better hygiene for individuals who need help changing their diaper. This can also help determine when a bathroom needs to be thoroughly cleaned.
    [0053] The pattern of a gas concentration can be referred to as a mark. Thus, there could be separate stool and urine markers. Thus, the invention can be used to distinguish between insults due to urine and feces, respectively.
    [0054] With reference to Figure 2, it can be seen that the actual values of the threshold values (c1), (c2) and the time periods (t1), (t2) can be predetermined, depending, for example, on the accuracy the gas sensors and the expected gas concentration at the location where fecal and urinary insult can be predicted.
    [0055] The principles shown in Figure 2 in relation to fecal detection can be applied in a similar way to the measurement of one or more gas components indicative of urine.
    [0056] In another example, also illustrated in Figure 2, an indication of the presence of feces will be given if the registered characteristics (10) conform to the characteristic (11) in a predetermined way so that the derivative of the registered characteristic ( 10) at a predetermined point in time is in accordance with a predetermined, or "expected" derivative of the predetermined characteristic (12) at the corresponding point in time. Thus, the determination is independent of the gas component concentration level, and only dependent on how the concentration varies - that is, increases or decreases - over time. Thus, the gas source can be identified as a fecal insult (5) and can be easily differentiated from other sources, such as components of intestinal gas release gases, during flatus, which corresponds to a different concentration pattern throughout of time after release.
    [0057] An example of suitable gases are non-volatile hydrogen sulfide and volatile hydrogen gas. These have different characteristics and if both of these characteristics are detected then the presence of stool can be indicated with high accuracy. Thus, the accuracy of the method is higher than basing the presence of stool on detecting only a gas indicative of stool. The presence of two gases in combination also excludes the possibility that the gas is detected based on a gas leak, a diaper wearer or nearby toilet, etc.
    [0058] The two alternative requirements of determining whether the registered characteristic conforms to the predetermined characteristic as exemplified above can be combined. Thus, the determination of conformity between the registered characteristic and the predetermined characteristic can be based on both threshold values and those derived at predetermined time periods. By combining the two compliance requirements, the accuracy and reliability of the method is increased because the method depends both on the concentration level of the gas components as well as the variation in concentration over time.
    [0059] The two registered characteristics (10), (11) can also be combined into a combined characteristic, after they have been registered separately. Characteristics can be combined by adding concentration values of each gas component at each point in time when measurements are taken. The combined registered trait is subsequently compared with a combined predetermined trait in order to determine whether the presence of faeces should be indicated based on the conformity assessment of the combined registered trait and the pre-registered combined trait. One way to combine gas concentration values is to detect a concentration of a first gas (eg, hydrogen) and detect a concentration of a second gas (eg, hydrogen sulfide) at a particular point in time. If the ratio between these two concentration values generally corresponds to an expected proportion (which corresponds to the presence of feces), this will be considered as corresponding to a fecal insult.
    [0060] The concentration values of each of the two registered characteristics (10), (11) can also be assigned a weight value before combining them into a combined characteristic. In this way, a gas component concentration can be adjusted to be more important for detection, therefore giving a higher weight value.
    [0061] The invention is not limited to the aforementioned embodiments, but may be varied within the scope of the claims. For example, the detection of urinary and/or fecal incontinence can be carried out by means of the invention, even if a person in whom the insult occurs is not wearing any sanitary article.
    [0062] Furthermore, the comparison between the registered characteristic and the predetermined characteristics can be carried out in the receiver unit, alternatively, in the sensor unit.
    [0063] In addition, parameters other than gas concentrations, as described above, can be used in order to determine whether stool or urine insults have occurred. For example, ambient temperature can be used in this regard, as the temperature near the location of the insult can be expected to have different values depending on the type of insult. Also, air humidity can be used in a similar way, as the humidity near the insult location can be expected to have different values depending on the type of insult.
    权利要求:
    Claims (13)
    [0001]
    1. A METHOD OF DETECTION OF URINE AND/OR FECES, comprising: - detecting the concentration of at least one urine indicative gas component and the concentration of at least one fecal indicative gas component; characterized by comprising: - recording, for each gas component, a characteristic (10, 11) corresponding to the variation over time in the concentration of each gas component; - comparing the registered characteristic (10, 11) with a predetermined characteristic (12, 13) for the corresponding gas component; - indicating a presence of urine if the registered characteristic (10, 11) of at least one urine indicative gas component conforms to the predetermined characteristic (12, 13) of the same gas component; and - indicate a presence of feces, if the registered characteristic (10, 11) of at least one gas component indicative of feces is in accordance with the predetermined characteristic (12, 13) of the same gas component, and in which the characteristic The predetermined characteristic (12, 13) varies over time and the registered characteristic (10, 11) is determined to conform to the predetermined characteristic (12, 13) if the registered characteristic (10, 11) follows the variation over time of the predetermined characteristic (12, 13); wherein indicating any presence of urine and faeces, respectively, comprises: - determining whether the concentration of one of the gas components exceeds at least a predetermined threshold value (c1) for a predetermined period of time (t1), or - determining if a derivative of the registered characteristic (10, 11), during a predetermined period of time, conforms to a corresponding expected derivative of the predetermined characteristic (12, 13).
    [0002]
    2. METHOD OF DETECTION OF URINE AND/OR FECES, according to claim 1, characterized in that it comprises: - detecting the concentration of at least two gas components indicative of feces; - for each of the components of gas indicative of feces, record a separate characteristic (10, 11) corresponding to the variation over time in the concentration of the gas component; - combine the separate registered characteristics (10, 11); - compare a combination of the registered characteristics (10, 11) with a predetermined combination of characteristics; - indicate the presence of urine and/or faeces if the combined recorded characteristics are in accordance with the predetermined combined characteristics.
    [0003]
    3. METHOD OF DETECTION OF URINE AND/OR FECES, according to claim 2, characterized in that it comprises: - assignment of a weight value for each of said separate recorded characteristics (10, 11) before combining the characteristics.
    [0004]
    4. METHOD OF DETECTION OF URINE AND/OR FECES, according to any one of claims 1 to 3, characterized in that the component of gas indicative of feces is chosen from a group comprising hydrogen gas, hydrogen sulfide and an organic compound gas.
    [0005]
    5. METHOD OF DETECTION OF URINE AND/OR FECES, according to any one of claims 1 to 4, characterized in that the gas component indicative of urine is ammonia gas.
    [0006]
    6. METHOD OF DETECTION OF URINE AND/OR FECES, according to any one of claims 1 to 5, characterized in that it comprises: - providing a sensor unit (1) comprising gas sensors (3, 4) for the detection of each one of the gas components, and - transmitting information on the detection of the gas components from the sensor unit (1) to a receiving unit (6).
    [0007]
    7. METHOD OF DETECTION OF URINE AND/OR FECES, according to claim 6, characterized in that it comprises: - present visual or auditory information in the receiving unit (6) about whether urine and/or feces were detected.
    [0008]
    8. METHOD OF DETECTION OF URINE AND/OR FECES, according to any one of claims 6 to 7, characterized in that it comprises forwarding information to a remote server unit (7).
    [0009]
    9. METHOD OF DETECTION OF URINE AND/OR FECES, according to any one of claims 6 to 8, characterized in that it comprises: - arranging the sensor unit (1) in proximity to a hygiene product (2), such as a diaper or incontinence pad, or from a user of the hygiene product.
    [0010]
    10. A SYSTEM FOR THE DETECTION OF URINE AND/OR FEES, comprising: - a sensor unit (1) comprising at least one gas sensor (4) for detecting the concentration of a component gas indicative of urine and at least one gas sensor (3) for detecting the concentration of a component of gas indicative of faeces, and - a receiving unit (6) which can be connected to the sensor unit (1) and; characterized in that the receiving unit (6) is arranged to record, based on the concentration detected for each gas component, a characteristic (10, 11) corresponding to the variation over time of the concentration of the gas component, and compare the registered characteristic (10, 11) with a predetermined characteristic (12, 13) indicative of urine and feces, respectively, wherein the predetermined characteristics (12, 13) vary over time and the receiving unit (6) is arranged to provide an indication of the presence of urine and/or faeces based on information from the gas sensors (3, 4) if the recorded characteristic (10, 11) of at least one urine/stool indicative gas component is in accordance with the characteristic The predetermined characteristic (12, 13) of the same gas component, and the registered characteristic (10, 11) is determined in accordance with the predetermined characteristic (12, 13) if the registered characteristic (10, 11) follows the variation along the time of the predetermined characteristic (12, 13), wherein indicating any presence of urine and faeces, respectively, comprises: - determining whether the concentration of one of the gas components exceeds at least a predetermined threshold value (c1) during a predetermined time period (t1), or - determining whether a derivative of the registered characteristic (10, 11), during a predetermined period of time, conforms to a corresponding expected derivative of the predetermined characteristic (12, 13).
    [0011]
    11. SYSTEM FOR THE DETECTION OF URINE AND/OR FACES, according to claim 10, characterized in that the receiving unit (6) comprises an indicator to provide visual or auditory information on whether urine and/or feces were detected.
    [0012]
    12. SYSTEM FOR THE DETECTION OF URINE AND/OR FACES, according to any one of claims 10 to 11, characterized in that the receiving unit (6) is a mobile unit, such as a mobile phone, a tablet computer, a laptop computer or the like .
    [0013]
    13. A SYSTEM FOR THE DETECTION OF URINE AND/OR FEES, according to any one of claims 10 to 12, characterized in that it comprises a remote server unit (7) connected to the receiving unit (6) and to store information from the gas sensors (3, 4).
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    WO2014098690A1|2014-06-26|
    CN104871226B|2016-12-14|
    EP2936466A1|2015-10-28|
    EP2936466A4|2016-08-31|
    RU2015129715A|2017-01-27|
    AU2012397343B2|2016-01-14|
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    法律状态:
    2018-12-04| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-01-22| B25D| Requested change of name of applicant approved|Owner name: ESSITY HYGIENE AND HEALTH AKTIEBOLAG (SE) |
    2020-04-07| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2021-03-23| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-05-04| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 21/12/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    PCT/SE2012/051488|WO2014098690A1|2012-12-21|2012-12-21|Method and system for detecting urine and/or feces|
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