Urinary data recording device that senses filling state during acquisition cycles

Abstract

A urination data recording device includes a connector for a sensor array having a plurality of sensor areas, the plurality of sensor areas being arranged to sense a state of fullness of an absorbent material located near a corresponding one of the sensor areas, and a data processor configured to store acquisition information indicating at least one of the sensor areas to be read during an acquisition cycle, read the at least one sensor area indicated by the acquisition information when the sensor array is connected via the connector during an acquisition cycle, determine whether the read sensor area indicates an above-threshold state of fullness of the absorbent material located near the read sensor area, and modify the acquisition information to indicate that the previously read sensor area will not be read during a subsequent acquisition cycle if the acquisition information is determined to indicate an above-threshold state of fullness.

Description

[Technical Field]

[0001] The present invention relates to a urination data recording device for use with a sensor array arranged to sense the fullness of an absorbent material. Further, the present invention relates to the use of absorbent articles, such as diapers, in daycare, homecare, nursing home, and hospital environments. In particular, the present invention relates to improvements in the monitoring and management of absorbent article use. [Background technology]

[0002] Absorbent articles are used to address symptoms such as leakage problems or incontinence. These absorbent articles, often in the form of diapers, are used by individuals as well as by caregivers in nursing home, hospital, and home care settings. In each of these settings, the state of fullness and the need to change a full absorbent article are of great interest, as is the assessment of the individual's specific urination behavior. The latter, in particular, is an important input for predicting absorbent article use, planning change schedules, and managing adequate supplies in both individual settings and broader settings such as the aforementioned nursing home. For example, technology exists for detecting the fullness of an absorbent article that allows for the use of electrical leads, such as those incorporated into the liquid-absorbing layer of a diaper. Recording devices are attached to these leads to sense observable physical quantities to determine the occurrence of a urination event and / or to measure indicators of urine volume, absorption, and / or absorbent capacity.

[0003] Such recording devices are typically juxtaposed to the patient and are attached to the absorbent article, most often in the form of a diaper. Typically, sensing the fullness of the absorbent material relies on the interaction between the sensor and the absorbed liquid, primarily water. For example, water is suitable for changing resistance or capacitance, which can be read by electronic circuitry. However, since the recording devices are typically battery-powered, power consumption both for measuring the basic observations and for storing and / or communicating the measurement results must be considered. Particularly in situations where liquid (e.g., water) needs to be detected reliably, power resource requirements can be challenging for battery-powered devices, given the battery life and the associated useful operating time of the recording device. Summary of the Invention

[0004] Thus, there is a need for improved urination data recording devices that efficiently use battery power resources while taking into account the particular environment in which liquid is detected in absorbent materials or articles containing absorbent materials, and there is a corresponding need for improved absorbent articles, such as diapers. [Means for solving the problem]

[0005] The problems and disadvantages mentioned are addressed by the subject matter of the independent claims. Further preferred embodiments are defined in the dependent claims. In particular, embodiments of the present invention may provide essential advantages which are partly described herein.

[0006] According to one aspect of the present invention, there is provided a urination data recording device comprising: a connector for a sensor array comprising a plurality of sensor regions arranged to sense a state of fullness of an absorbent material located near a corresponding one of the sensor regions; and a data processor configured to store acquisition information indicating at least one of the sensor regions to be read during an acquisition cycle, read the at least one sensor region indicated by the acquisition information during an acquisition cycle and via the connector when the sensor array is connected, determine whether the read sensor region indicates an over-threshold state of fullness of the absorbent material located near the read sensor region, and modify the acquisition information to indicate that the previously read sensor region will not be read during a subsequent acquisition cycle if the acquisition information is determined to indicate an over-threshold state of fullness.

[0007] According to one aspect of the present invention, there is provided an absorbent article comprising: a plurality of sensor areas arranged to sense a state of fullness of an absorbent material located proximate a corresponding one of the sensor areas; a connector to a urination data recording device configured to read at least a portion of the plurality of sensor areas when the urination data recording device is connected via the connector; and an encoding circuit for encoding the number and / or arrangement of the sensor areas in the sensor array.

[0008] According to one aspect of the present invention, there is provided a sensor array comprising: a plurality of sensor areas arranged to sense a state of fullness of an absorbent material located proximate a corresponding one of the sensor areas; a connector to a urination data recording device configured to read at least a portion of the plurality of sensor areas when the data recording device is connected via the connector; and an encoding circuit for encoding the number and / or arrangement of the sensor areas of the sensor array.

[0009] DETAILED DESCRIPTION OF THE INVENTION The following embodiments of the present invention are presented to provide a better understanding of the inventive concept, but should not be construed as limiting the present invention. These embodiments of the present invention will now be described with reference to the drawings. [Brief explanation of the drawings]

[0010] [Figure 1A] 1A-1C are schematic diagrams of application examples of respective urination data recording devices according to some embodiments of the present invention. [Figure 1B] 1A-1C are schematic diagrams of application examples of respective urination data recording devices according to some embodiments of the present invention. [Figure 2] 1 is a schematic diagram of a urination data recording device according to some embodiments of the present invention. [Figure 3A] 1 is a schematic diagram of a motion sensor of a urination data recording device according to some embodiments of the present invention. [Figure 3B] 1 is a schematic diagram of a motion sensor of a urination data recording device according to some embodiments of the present invention. [Figure 4A] 1 is a schematic diagram of different types of encoding in the context of some embodiments of the present invention; [Figure 4B] 1 is a schematic diagram of different types of encoding in the context of some embodiments of the present invention; [Figure 4C] 1 is a schematic diagram of different types of encoding in the context of some embodiments of the present invention; [Figure 4D] 1 is a schematic diagram of different types of encoding in the context of some embodiments of the present invention; [Figure 5A] 1A-1C are schematic diagrams of various arrangements within a sensor arrangement according to some embodiments of the present invention. [Figure 5B] 1A-1C are schematic diagrams of various arrangements within a sensor arrangement according to some embodiments of the present invention. [Figure 5C] 1A-1C are schematic diagrams of various arrangements within a sensor arrangement according to some embodiments of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0011] 1A and 1B show schematic diagrams of application examples of respective urination data recording devices according to some embodiments of the present invention. In FIG. 1A, the focus is on an embodiment in which the sensor array is independent of the absorbent article itself. That is, the figure shows, as an example in this context, an absorbent article that is a diaper 9, in which an absorbent material 99 in the form of a liquid-absorbing layer is disposed over the applicable and therefore usual area of ​​the diaper 9. The sensor array is shown as a strip-like sensor arrangement 8, which can be attached to the outer surface 91 of the diaper 9 by, for example, part of a hook-and-loop fastener, adhesive, etc. Similarly, any other suitable means, including the option of having some kind of pocket, pouch, hook, or strip on the diaper 9 to maintain the sensor arrangement 8 in a sufficiently constant position relative to the diaper during use (i.e., while the diaper is being worn by a user or patient and / or urination recording is being performed), are also possible.

[0012] The urination data recording device 1 is provided with a connector 11 capable of establishing the desired electrical contact to the sensor array as part of the strip sensor arrangement 8. To this end, the strip sensor arrangement 8 may include a corresponding connector 81 that mates with the connector 11 of the urination data recording device 1, which may be configured to not only establish a reliable electrical connection to the appropriate data, measurement and supply lines, but also to further establish a mechanical engagement to securely hold the urination data recording device 1 to the strip sensor arrangement 8 while the diaper 9 is worn by the user / patient.

[0013] Generally, a sensor array, shown herein as part of the strip-shaped sensor configuration 8, comprises a plurality of sensor areas arranged to sense the state of fullness of absorbent material located adjacent to corresponding ones of the sensor areas. Thus, the sensor array can be a sensor strip with a plurality of sensor areas arranged along a line in the primary extension direction of the sensor strip. For example, the sensor areas may comprise electrodes, coplanar capacitors, induction coils, resistors, etc., to establish a predetermined correlation between the state of fullness of absorbent material located adjacent to corresponding ones of the sensor areas and an electrical observation (i.e., capacitance, permittivity, resistance, etc.) that can be determined by the selected type of sensor area.

[0014] The urination data recording device 1 further includes a data processor 100 configured to store acquisition information indicating at least one of the sensor regions to be read during an acquisition cycle. The acquisition information may generally indicate a set of information determining whether, when, and / or how to acquire signals from the sensor array. That is, signals may be acquired in an acquisition sequence in which a test signal is applied to the sensor and a response is measured. For example, an AC signal may be implied to measure the impedance response of the sensor. Similarly, a voltage may be applied to measure the current and the effective resistance of the sensor. Thus, while such measurements of desired observations are performed at specific times, no acquisition is substantially performed between two successive acquisition sequences. When there is no specific sequence of actions related to the acquisition of sensor data, this can be referred to as a reading instance of the corresponding sensor region. However, in any case, such a period in which at least one acquisition sequence is performed is referred to as an acquisition cycle. Furthermore, the urination data recording device 1 may consume relatively high power from a power source during acquisition sequences but relatively low power from a power source between acquisition sequences.

[0015] Furthermore, the data processor 100 is configured to read at least one sensor area indicated by the acquisition information when the sensor array is connected, for example, during an acquisition cycle, such as during a corresponding acquisition sequence or acquisition instance, and via the connector 11. Specifically, the acquisition information may specify which sensor area among the multiple connected sensor areas should be read and indicate the time at which such reading should be performed. In this manner, the acquisition information defines an acquisition pattern mapped to linearly arranged sensor areas in the connected sensor array, and the data processor stores an initial acquisition pattern while considering a central sensor area for reading. For example, the definition of which sensor area should be read may include information related to a pointer or identifier that can be used to select a particular sensor area from the multiple sensor areas. Such a pointer may be in the form of a number that addresses the sensor area in a linear or other suitable arrangement and addressing scheme. The time indicator may include, for example, information regarding the length of the acquisition cycle, allowing the data processor 100 to wait until that time has elapsed before starting the acquisition sequence or acquisition instance.

[0016] Furthermore, the data processor 100 is configured to determine whether the sensor area being read indicates an over-threshold state of fullness of the absorbent material located near the sensor area being read. Specifically, the data processor can store information regarding a threshold value that can be used to distinguish a full state from an empty state. This empty state is characterized by a state in which the absorbent material has not yet essentially absorbed any liquid, such as body fluids in the context of an application such as urination data recording. Such an empty state should be considered as a state in which the absorbent material in a region of the absorbent article has not been used to that point and is therefore available to absorb liquid during any further urination events. The presence of at least one empty or unfilled region may indicate that the absorbent article may still be in use and does not yet need to be replaced. Furthermore, multiple sequences or instances of reading a particular sensor area may be required to confirm that an over-threshold state of fullness has been reached. For example, high reliability may require multiple consecutive stable readings (within acceptable limits) before determining that the absorbent material adjacent to the sensor area being read is overfilled beyond a threshold.

[0017] Furthermore, the data processor 100 is configured to modify the acquisition information to indicate that a previously read sensor region will not be read during a subsequent acquisition cycle if the previously read sensor region is determined to exhibit an over-threshold fullness state. Specifically, the acquisition information can be modified so that if another sensor region must be read during a subsequent acquisition cycle, the previously addressed or indicated sensor region will not be read at least. This conserves energy resources in the urination data recording device because power is not consumed to read a sensor region that was recently determined to exhibit an over-threshold fullness state and is therefore unlikely to be of interest, at least for the time being. Similarly, the acquisition information can be modified so that the previously addressed or indicated sensor region will not be read again during a subsequent acquisition cycle, if there is one. In this manner, the data processor modifies the acquisition information to indicate that a next sensor region different from the previously read sensor region will be read during a subsequent acquisition cycle. More specifically, the data processor can modify the acquisition information to indicate a next sensor region adjacent to the previously read sensor region. However, in general, the sensor area addressed or indicated up to that point, even if it was previously determined to indicate an over-threshold fill condition, may still be read subsequently, e.g., for verification and / or confirmation purposes, but less frequently.

[0018] For example, the acquisition information may be modified to specify that another sensor area of ​​a plurality of connected sensor areas should be read, and / or information associated with a pointer and / or identifier may select a particular other sensor area from the plurality of sensor areas. If such a pointer is in the form of a number that addresses a sensor area in a linear or other suitable arrangement and addressing scheme, the pointer may simply increment or decrement depending on the addressing direction. Furthermore, the acquisition information may indicate the time at which the corresponding next reading should be performed. The time indication may include, for example, information regarding the length of an acquisition cycle, which would also allow the data processor 100 to wait until that time has elapsed to initiate an acquisition sequence or acquisition instance. However, since some embodiments contemplate a situation in which the acquisition cycle may be modified due to one or more sensor areas being found to be in an over-threshold fullness state, the time may also be modified. For example, the cycle may be shortened to achieve finer time resolution near the end of the absorbent article's lifespan, which may allow appropriate determination that the absorbent article may need to be replaced.

[0019] In some embodiments, the data processor may be configured to read one of the sensor regions of the connected sensor array by applying a stimulus signal and sensing a respective response. For example, the data processor may include a network analysis function configured to read the sensor region of the connected sensor array by applying an AC signal, detecting a response, and determining an indication of the impedance of the sensor region. Specifically, the data processor 100 may include a network analysis function that applies an AC signal to capacitor electrodes of the sensor array and determines the reflected and / or absorbed power that changes due to the effective impedance of the sensor region (in the form of a capacitor) changing in response to changes in the dielectric properties of the capacitor when the absorbent material absorbs liquid (e.g., body fluid).

[0020] In some embodiments of the urination data recording device 1, the acquisition information further includes any one of an acquisition interval, an acquisition order, and a sampling rate. Typically, the data processor is capable of storing the acquisition information in the form of an acquisition pattern that determines which sensor areas of the connected sensor array are read in subsequent acquisition cycles. Furthermore, the data processor is configured to change the time interval between two acquisition cycles if the read sensor area indicates an over-threshold fullness state.

[0021] For example, an acquisition interval may be defined by information indicating the time between two successive acquisition sequences or acquisition instances in the form of an acquisition cycle as discussed above. The information may directly code the time, such as 1 or 60 to define 1 minute and 1 hour, or may indirectly code the time, such as 1 meaning every minute, 2 meaning every hour, 3 meaning every two hours, etc. In general, the acquisition interval may relate to the frequency at which acquisition sequences are performed. A first acquisition interval may be defined relatively frequently, approximately every minute, while a second acquisition interval may be defined relatively infrequently, approximately every hour.

[0022] The acquisition order may be defined by information indicating which of the multiple sensor areas should be addressed. In this way, the acquisition order may indicate that a particular one of the multiple sensor areas should be read during the next acquisition sequence / instance or within the next acquisition cycle. The acquisition order will naturally indicate which particular one of the multiple sensor areas should be read during a subsequent acquisition. In this way, it is possible to specify which sensor area is read when or under what conditions. The acquisition information may indicate positions in such an order, which allows for a simple observance of a given order that may not follow a strictly linear or monotonic fashion.

[0023] The sampling rate may be defined by information indicating the number of individual data acquisitions performed for a single sensor area during an acquisition sequence. Typically, data acquisition may involve, at least at some point, analog-to-digital conversion (ADC), during which an analog level (e.g., corresponding to voltage, current, resistance, or reflected power as part of network analysis) is converted to a digital representation. During such conversion, an analog comparison level is generated, and an analog input level is compared to this analog comparison level. This process, also known as sampling or supersampling, may involve successive approximations and is therefore an iterative process requiring energy and power resources. For example, for a single acquisition sequence and a single sensor area, one or more individual data acquisitions, e.g., up to 100, 50, 30, or 20, may be averaged into a single data acquisition, optionally after removal of implausible data points and / or application of other known data filtering techniques. A higher supersampling rate may provide greater accuracy, but consumes more energy.

[0024] Generally, any one or two of the acquisition interval, acquisition sequence, and sampling rate may remain the same, while the remaining one is changed. In some embodiments, the acquisition interval may remain the same, but the sampling rate, i.e., the number of measurements averaged into one measurement, may vary. For example, the interval may be 1 second, but the sampling rate may be 1 to 16 measurements. A higher sampling rate results in higher battery consumption but more reliable measurements. Therefore, the data processor 100 may be configured to adjust the acquisition scheme based on the determined array type, thereby adjusting the acquisition interval, acquisition sequence, and / or sampling rate. For example, there may be initial default values ​​for the acquisition interval and / or sampling rate parameters, and upon determining that a certain number of sensor regions exhibit an over-threshold fullness state, at least one of these parameters may be configured to further reduce energy consumption in the urination data recording device, such as by increasing the acquisition interval (i.e., increasing the time between two consecutive acquisition cycles) and / or decreasing the sampling rate.

[0025] For example, the strip-shaped sensor arrangement 8 may include multiple sensor areas 82-1, 82-2, ..., 82-n. These sensor areas may therefore be located at different specific positions relative to the absorbent article, i.e., the diaper 9. For example, the strip-shaped arrangement of the sensor arrangement may result in some sensor areas being located closer to the source of urine output (e.g., near the center of the diaper 8 located at the site of the ureteral orifice), while other sensor areas are located farther away from the source of urine output. Thus, it may be of interest to consider sensor areas located near the source of urine output toward the beginning of the diaper's use, while other sensor areas may be of greater interest toward the end of the diaper's life, i.e., when the absorption reaches the maximum absorption capacity or desired target absorption capacity of the absorbent material of the diaper 9.

[0026] FIG. 1B focuses on embodiments in which the sensor array is incorporated into or forms part of an absorbent article. That is, the figure shows, as an example in this context, an absorbent article that is a diaper 9, in which an absorbent material 99 in the form of a liquid-absorbing layer is disposed over a typical area in which the diaper 9 can be applied. In these embodiments, the sensor array 93 is incorporated into or disposed on the absorbent layer (these types of sensors are applicable to this embodiment as described elsewhere in this disclosure). Additionally, the absorbent article may include a connector 92 that engages with the connector 11 of the urination data recording device 1 in exactly the same or similar manner as the connector 81 described in conjunction with FIG. 1A. In some embodiments, the absorbent article 9 includes an encoding circuit 94, described in more detail elsewhere in this disclosure, that encodes the number and / or location of the sensor areas of the sensor array.

[0027] FIG. 2 is a schematic diagram of a urination data recording device according to some embodiments of the present invention. Accordingly, the urination data recording device 1 includes a connector 11 for a sensor array having a plurality of sensor regions, the sensor array being arranged to sense the fullness of an absorbent material located adjacent to a corresponding one of the sensor regions. Preferably, the connector 11 is configured not only to establish a reliable electrical connection to the appropriate data, measurement, and supply lines, but also to establish a mechanical engagement for securely holding the urination data recording device 1 to the strip-like sensor assembly 8 during use. To this end, the connector 11 may include one or more electrical contacts 111, e.g., in the form of a contact tongue or strip having some elasticity. The surfaces of such tongues and strips may be coated, e.g., with gold, to ensure good contact even in wet or humid environments. Furthermore, the connector 11 may include one or more mechanical elements 112, e.g., indents or springs, that hold the connector 11 in place, thereby sufficiently securing the urination data recording device 1 to the sensor array, sensor assembly, or strip.

[0028] The urination data recording device 1 further comprises a data processor 100 configured to read at least some of the plurality of sensor areas when the sensor array is connected via the connector 11. In general, the data processor 100 is configured to store acquisition information indicating at least one of the sensor areas to be read during an acquisition cycle, read the at least one sensor area indicated by the acquisition information when the sensor array is connected via the connector during an acquisition cycle, determine whether the read sensor area indicates an over-threshold fullness state of an absorbent material located near the read sensor area, and, if determined to indicate an over-threshold fullness state, modify the acquisition information to indicate that the previously read sensor area will not be read during a subsequent acquisition cycle.

[0029] In general, the urination data recording device 1 may comprise a power source 101, for example a battery or high-capacity / ultra-capacitor, and other elements 102 including optional memory and / or a communication module (e.g., for communication via Bluetooth™, BLE, WiFi, GPRS, GSM, PCM, UMTS, LTE, 2G, 3G, 4G, 5G, and related or correspondingly evolved standards). All or some of these electronic elements may be mounted on a printed circuit board (PCB) 110 housed by the recording device housing 10. This recording device housing 10 may be sealed against air, liquids, moisture, dust, etc. to ensure reliable operation within the intended environment.

[0030] 3A and 3B show schematic diagrams of operational sensors of a urination data recording device according to some embodiments of the present invention. In FIG. 3A, the absorbent article is shown in the form of a cutaway view of a diaper 9, which includes an absorbent material 99 in a layer (absorbent layer) in at least some areas of the diaper. Alternatively, the continuous layer may be replaced by some kind of pocket configuration, which substantially inhibits the flow and exchange of liquid between two pockets. An array configuration 8 is shown schematically as being located near an outer surface 91 of the diaper 9. The array configuration 8 includes a plurality of sensor areas 82-1, 82-2, ..., such as coplanar capacitors, capable of sensing the accumulation of liquid in each area of ​​the absorbent material 99. Such areas are indicated by dashed lines 99-2, 99-3, ..., but it is understood that these do not represent precisely defined corresponding areas. This is because these dashed lines 99-2, 99-3 may overlap at least to some extent.

[0031] A signal line arrangement 83 connects the sensor areas 82-1, 82-2, ... via connectors 11 / 81 to a urination data recording device 1 comprising at least a data processor 100, as already described in relation to Figures 1A, 1B and 2. In this example, a communication 103 is shown which is arranged to convey any relevant and required data resulting from the acquired data from the sensor areas to a data processing entity 200, illustratively in the form of a network server or network function, although this communication 103 is only optional. This entity 200 may receive and further process the acquired data, thereby providing logs, reports, summaries, statistical analyses or alarm sending functions indicating, among other things, the need to change the absorbent article.

[0032] In this example, data processor 100 includes a network analysis function that corresponds to the typical functions involved in reading a sensor region. Such a network analysis function can apply an AC stimulus signal to the capacitor electrodes of the sensor region and determine the reflected and / or absorbed power. This reflected and / or absorbed power changes due to the effective impedance of the sensor region (in the form of a capacitor) changing in response to the change in the dielectric properties of the capacitor when the absorbent material absorbs a liquid (e.g., bodily fluid). That is, data processor 100 can selectively transmit an AC stimulus to sensor region 82-2 indicated by the acquired information. In this situation, the AC stimulus can further include parameters for the particular reading, including, for example, ID, stimulus power, and a reflected power threshold that can directly or indirectly identify an over-threshold filling condition.

[0033] In the illustrated example, the absorbent material 99 in the corresponding region 99-3 has already absorbed some liquid L in the volume V1. Therefore, the measured response may produce a result that is not an above-threshold filling state. However, this measurement during each acquisition sequence already consumes power, especially because part of the stimulation power is absorbed by the effective circuit formed by the sensor in the form of a capacitor and the target in the form of a liquid absorbed in the absorbent material forming the capacitor's dielectric.

[0034] FIG. 3A illustrates a situation in which the absorbent material 99 in the corresponding region 99-3 has now absorbed somewhat more liquid LL into volume V2. Therefore, the measured response may produce an over-threshold fullness result, indicating that region 99-3 is no longer able to absorb liquid or is about to do so. This measurement during each acquisition sequence also consumes power because even greater stimulation power is absorbed by the enable circuitry 82-3, 99-3. This power consumption may exceed the power required to acquire an empty sensor region or a region that is less than full. Therefore, data processor 100 determines that the read sensor region 82-3 indicates that the absorbent material 99 located in the vicinity 99-3 of the read sensor region 82-2 is in an over-threshold fullness state. Therefore, data processor 100 modifies the acquisition information to indicate that the previously read sensor region 82-3 will no longer be read during the subsequent acquisition cycle. By doing so, it is possible to avoid power consumption for information currently present in the device, and no further specification is required.

[0035] Alternatively, the data processor 100 may modify the acquisition information to indicate that a sensor region that has not yet been read will be read during a subsequent acquisition cycle. For example, the sequence may proceed to one or more adjacent sensor regions 82-2, 82-4 that may be presumed to be empty or still in a low-fill state, which may require significantly less power from the power resources available in the urination data recording device 1. In this manner, acquisition may occur in a region only if that region is empty or if it is filled to a degree that has already absorbed some liquid but less than the amount indicated by a threshold fullness state. Once this threshold fullness state occurs, i.e., when a sensor region is determined to exhibit an above-threshold fullness state, the acquisition sequence is switched to another region that is still likely to be empty, thereby saving associated power.

[0036] 4A-4D show schematic diagrams of different types of encoding schemes in the context of some embodiments of the present invention. Specifically, in such embodiments, a urination data recording device is configured to allow for various types of sensor configurations, each with a different configuration (number, size, etc.) of sensor areas. Specifically, this can work in conjunction with further embodiments that define various layouts to allow for different targets during operation, use, and evaluation; these embodiments will be described in more detail below in conjunction with FIG. 5A.

[0037] In a first approach, strip-shaped sensor configurations 8-1 (FIG. 4A) and 8-2 (FIG. 4B) include sensor arrays of connectors 81-1, 81-2 of the same type but identical in manufacturing tolerances. However, in one example, a first relatively large number of signal lines 83-1, ... 83-n may be connected to connector 81 (FIG. 4A), and in another example, a second relatively small number of signal lines 83-1, ... 83-m may be connected (FIG. 4B). In this manner, the processor can determine that some signal lines are not connected if application of a test signal (e.g., a test voltage or AC signal) does not produce a noticeable response (e.g., an open circuit or total power reflection).

[0038] In general, the data processor 100 may be configured to read one of the sensor regions of the connected sensor array and determine whether the sensor region is present based on the sensing response. In this way, the processor can determine the type of the connected sensor array and adjust the acquisition scheme based on the determined array type. This may be a particular form of urination data recording device in which the data processor is configured to determine the number of sensor regions of the connected sensor array and adjust the acquisition scheme based on the determined number as the array type. This may involve determining whether a sensor region is present on the connected sensor array. The data processor may then proceed to read, via the connector, a relatively large number of sensor regions of the determined first type (e.g., the type of FIG. 4A ) and a relatively small number of sensor regions of the determined second type (e.g., the type of FIG. 4B ).

[0039] FIG. 4C shows a schematic diagram of an embodiment that considers an encoding circuit implemented with a sensor array. This is an embodiment for a urination data recording device, in which a data processor is configured to read the encoding circuit to determine the type and / or number of connected sensor areas of the connected sensor array. The data processor may also be configured to read such encoding circuit to determine the arrangement of the sensor areas of the connected sensor array, including information regarding any of the following: the location of the sensor area, the size of the sensor area, the connection method of two or more sensor areas (e.g., serial or parallel connection), etc. For example, as shown, the strip-shaped sensor configuration 8-3 may also include a connector 81, one or more signal lines of which lead to an encoding circuit 84. The encoding circuit 84 may be relatively simple, distinguishing between shorts and open circuits between at least two signal lines going to the connector 81, or may be relatively complex, including multiple such open / closed circuits for encoding binary values, or even some (separate) electronic components, such as passive elements including resistors, capacitors, and inductors.

[0040] FIG. 4D shows a schematic diagram of an embodiment that considers an encoding circuit implemented with a sensor array. This is another embodiment for a urination data recording device, in which a data processor is configured to read the encoding circuit to determine the type of the connected sensor array. The strip-shaped sensor arrangement 8-4 also includes a connector 81, one or more signal lines of which lead to an encoding circuit 84-2. The encoding circuit 84-2 may be an active or integrated component, such as a memory, a read-only memory (ROM), a serial ROM, a flash memory, an I2C memory, or an SPI memory, or may be relatively complex by including such active or integrated components. Thus, the data processor can further read any stored information via the connector to determine the type of the connected sensor array. For example, this information may correspond to a type identifier, a serial number, and / or even information regarding the acquisition method to be used. In another embodiment, the encoding circuit can send type information to the processor as a payload along with the sensor readings.

[0041] In a further embodiment of the urination data recording device of the present invention, the data processor may be configured to determine parameters of the connected sensor array and to adjust the acquisition strategy based on the determined parameters. The number of sensors in the sensor area does not necessarily have to differ between different types. In particular, the sensors in the sensor area can be identical except for parameters, possibly in the form of a "strip type identifier" read by the data processor. This type identifier can function as a hardware key to activate various settings regarding the acquisition interval and, optionally, various settings in the back-end mode and / or presentation mode in the user interface, i.e., in the acquisition strategy.

[0042] 5A-5C show schematic diagrams of different arrangements within a sensor configuration according to some embodiments of the present invention. Specifically, the urination data recording device can be configured to accommodate various types of sensor configurations with different sensor area configurations (number, size, etc.) and to define various layouts that each accommodate different targets during operation, use, and evaluation. In a first exemplary option as shown in FIG. 5A, a strip-shaped sensor configuration 8 includes multiple sensor areas 82-1, 82-2... with substantially equal spacing between sensor areas along the main longitudinal direction of the strip. This may represent a type of general-purpose application, since a roughly constant distance between adjacent sensor areas may be suitable for most applications. Information regarding this type, i.e., this equal spacing, and optionally the number of sensor areas, may be communicated to the urination data recording device as described in connection with FIGS. 4A-4D.

[0043] In a further exemplary option, as shown in FIG. 5B , the strip-like sensor configuration 8′ also includes multiple sensor regions 82-1, 82-2, ... along the major longitudinal direction of the strip, but these sensor regions are not equally spaced. In particular, the illustrated configuration corresponds to an embodiment in which the sensor regions are spaced closer together in the center of the strip than at least one end of the strip. This may correspond to a type of application in which initial urination behavior is of primary interest, such as part of the evaluation of a new user or patient. This configuration may provide information regarding the typical location of a bodily fluid source, such as the approximate location of the ureteral orifice. This may contribute to finding the most appropriate configuration, type, or size of absorbent article for a particular user or patient. This type may also be communicated to a urination data recording device, as described above.

[0044] In yet another exemplary option, as shown in FIG. 5C , the strip-like sensor arrangement 8″ comprises multiple sensor areas 82-1, 82-2, ... along the main longitudinal direction of the strip, but the sensor areas are not equally spaced. In particular, the illustrated arrangement corresponds to an embodiment in which the spacing of the sensor areas becomes smaller towards at least one end of the strip. This corresponds to a type of application in which the initial urination event is of secondary interest and the primary focus is on determining the optimal time to change the absorbent article once it has reached its overall maximum absorbent capacity. In this way, available power resources are reserved for data acquisition during the time of greatest interest, i.e., when the diaper is full. This type can also be similarly communicated to a urination data recording device, as described above.

[0045] Although detailed embodiments have been described, these embodiments serve to provide a better understanding of the invention defined by the independent claims and should not be considered limiting. [Explanation of symbols]

[0046] 1. Urination data recording device 8 Strip-shaped sensor assembly 8-1 Strip-shaped sensor assembly 8-2 Strip-shaped sensor assembly 8-3 Strip-shaped sensor assembly 8-4 Strip-shaped sensor assembly 9. Absorbent articles 10 Recording device housing 11 Connector 81 Connector 82-1, 82-2, ... 82-n sensor areas 83 Signal Line Structure 83-1,...83-n signal lines 84 Encoding Circuit 84-2 Encoding circuit 91 Outer surface 92 Connectors 93 Sensor Array 94 Encoding Circuit 99 Absorbent Materials 99-2, 99-3, ... dashed lines, areas, 100 Data Processors 101 Power supply 102 elements 103 Communications 110 Printed Circuit Board (PCB) 111 Electrical contacts 112 Mechanical Elements 200 Data Processing Entities

Claims

1. 1. A urination data recording device comprising: a connector for a sensor array comprising a plurality of sensor areas arranged to sense a state of fullness of an absorbent material located adjacent a corresponding one of the sensor areas; and a data processor, wherein the data processor: storing acquisition information indicating at least one of the sensor areas to be read during an acquisition cycle; reading at least one sensor region indicated by the acquisition information when a sensor array is connected during the acquisition cycle and via the connector; determining whether the read sensor area indicates an above-threshold fill state of the absorbent material located proximate the read sensor area; If the acquisition information is determined to indicate the over-threshold fill condition, modifying the acquisition information to indicate that the previously read sensor area will not be read during a subsequent acquisition cycle. A urination data recording device configured to:

2. 2. The urination data recording device of claim 1, wherein the data processor modifies the acquisition information so that the acquisition information indicates that a next sensor area different from the previously read sensor area is to be read during a subsequent acquisition cycle.

3. 3. The urination data recording device of claim 2, wherein the data processor modifies the acquired information so that the acquired information indicates a next sensor area adjacent to the previously read sensor area.

4. 4. A urination data recording device as described in any one of claims 1 to 3, wherein the data processor stores the acquisition information in the form of an acquisition pattern that determines which one or more sensor areas of the connected sensor array are read in subsequent and / or later acquisition cycles.

5. 5. The urination data recording device of claim 4, wherein the acquisition pattern is mapped to linearly arranged sensor areas in the connected sensor array, and the data processor stores an initial acquisition pattern while considering a central sensor area for reading.

6. 6. The urination data recording device of claim 1, wherein the data processor is configured to read the encoding circuitry to determine the number of sensor regions in the connected sensor array.

7. 7. The urination data recording device of claim 1, wherein the data processor is configured to read encoding circuitry to determine the placement of sensor regions of a connected sensor array.

8. 8. The urination data recording device of claim 1, wherein the data processor has a network analysis function and is configured to read the sensor areas of the connected sensor array by applying an AC signal, detecting a response, and determining an indication of the impedance of the sensor area.

9. 9. The urination data recording device of claim 1, wherein the data processor is configured to change the time interval between two acquisition cycles when the read sensor area indicates a fill state above the threshold.

10. 10. The urination data recording device of claim 9, wherein the data processor is configured to reduce the time interval between two acquisition cycles if the read sensor area indicates the over-threshold fullness state.

11. 1. An absorbent article comprising: a plurality of sensor areas arranged to sense a state of fullness of an absorbent material located adjacent a corresponding one of the sensor areas; a connector to a urination data recording device configured to read at least a portion of the plurality of sensor areas when the urination data recording device is connected via the connector; and an encoding circuit that encodes the number and / or arrangement of the sensor areas in the sensor array.

12. 1. A sensor array comprising: a plurality of sensor areas arranged to sense a state of fullness of an absorbent material located adjacent a corresponding one of the sensor areas; a connector to a urination data recording device configured to read at least a portion of the plurality of sensor areas when the data recording device is connected via the connector; and an encoding circuit for encoding the number and / or arrangement of the sensor areas on the sensor array.

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