Method and device for determining temperature of water present in water supply network
By combining quantity and temperature detection in water meters and verifying storage conditions before using water temperature data, the accuracy problem of water temperature monitoring in water supply networks is solved, enabling reliable determination of water supply network temperature and support for billing and frost prevention functions.
Patent Information
- Application Number
- CN202511164136.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2024-09-02
- Filing Date
- 2025-08-20
- Publication Date
- 2026-03-03
AI Technical Summary
Existing technologies struggle to accurately monitor water temperature in water supply networks, especially when there is a temperature difference between the water meter area and the water supply network, leading to inaccurate temperature monitoring.
Water volume information is obtained by the quantity detection device in the water meter, and water temperature information is obtained by the temperature detection device. The storage conditions are verified to ensure that the water temperature in the water meter area corresponds to the water temperature in the water supply network. Only when these information are stored and used to determine the water temperature in the water supply network.
It achieves accurate temperature monitoring between the water meter area and the water supply network, ensuring the reliability and accuracy of water temperature data, and supports the implementation of billing and anti-frost functions.
Smart Images
Figure CN121595060A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a method for determining the temperature of water present in a water supply network, wherein the water supply network is connected to consumption points arranged in the building via a connection device extending from the outside to the building, the connection device including a water meter also arranged in the building. Background Technology
[0002] A typical requirement for water present in water supply networks (often used as drinking water) is that its temperature be kept as low as possible. In particular, to prevent potential contamination by bacteria such as Legionella, the water temperature in water supply networks is generally required to not exceed 25°C. Especially, the risk that this requirement may no longer be easily met is increasing due to the rising temperatures during the summer months. Moreover, in recent developments, water pipes in water supply networks are laid near the ground, primarily for cost reasons. For example, higher average temperatures are generally expected during the winter months, and due to the reduced risk of freezing, this results in pipes often being laid at a depth of 0.8–1.0 m, no longer as typically as in the past at a depth of at least 2.0 m. These circumstances also increase the risk that specific maximum temperatures of the water in the water supply network may no longer be observable due to the correspondingly higher ambient temperatures. Against this backdrop, there is a need for the ability to monitor the temperature in water supply networks without interruption, whenever possible. Summary of the Invention
[0003] The problem addressed by this invention is to propose an improved concept for determining and monitoring the temperature of water present in a water supply network.
[0004] According to the present invention, in the method of the type described at the beginning, the problem is solved by the following fact: at least one quantity information related to the amount of water reaching the consumption point via the connection device is obtained by the quantity detection device of the water meter, wherein at least one temperature information related to the temperature of the water in the water meter area is obtained by the temperature detection device, the satisfaction of the storage condition is verified, and the storage condition is satisfied or can only be satisfied when the quantity information or at least one quantity information shows that the temperature of the water in the water meter area corresponds to the temperature of the water existing in the water supply network, and when the storage condition is satisfied, at least one currently acquired temperature information is stored in the data memory and / or used to determine the temperature of the water existing in the water supply network.
[0005] In particular, the present invention overcomes the problem that the temperature of water in the water meter area deviates from the temperature of water in the water supply network, making the water temperature unsuitable in principle for determining the temperature in the water supply network. For example, water meters are typically located inside buildings. Therefore, as long as no water is currently being drawn from the water supply network via the connection device, and exactly before that, the temperature of water in the water meter area or within the water meter corresponds to the temperature also present in the environment surrounding the water meter and thus in the building. Therefore, the temperature of water in the water meter corresponds to the temperature of water in the water supply network only if the water in the water meter was exactly in the water supply network area before that. Otherwise, according to Newton's law of cooling, the temperature of water in the water meter approaches the general temperature around the water meter over time, and therefore this is fundamentally or initially unsuitable for determining the temperature of water in the water supply network.
[0006] To overcome or attempt to overcome this problem, the present invention provides verification of retention conditions, which are satisfied only when the quantity information suggests or implies that the water currently present in the water meter was also present in the water supply network just before, and therefore has a temperature corresponding to or only slightly deviating from that temperature. Therefore, the quantity information specifically specifies a value (e.g., in cubic meters) indicating the amount, mass, or volume of water currently passing through the water meter or passing through the water meter in the measurement interval just before the current time. When the flow rate is sufficiently high, it can be assumed that the temperature of the water currently present in the flow meter corresponds to the temperature of the water present in the water supply network; thus, in this respect, at least one value of the currently acquired temperature information can be used as a measurement value. Therefore, quantity information, which is currently typically acquired only for billing purposes, finds additional use within the scope of the present invention to reliably determine the temperature of the water in the water supply network.
[0007] A water supply network should be understood to refer to the components, particularly the water pipes (through which water from the supplier reaches the corresponding consumer), i.e., the corresponding connection devices, which are often referred to as service connections, or simply connections. Water pipes are typically laid underground and branch off, through which water reaches the corresponding connection devices.
[0008] The water meter preferably includes an inlet and an outlet, wherein water reaches the measuring chamber or measuring part of the water meter through the inlet on the side of the water supply network, and water flows out of the water meter on the consumer side through the outlet. A connecting device (particularly a connecting flange) may be provided at the inlet and / or outlet, through which the water meter is connected to or can be connected to the water pipe of the water supply network or the pipe of the connecting device.
[0009] To obtain at least one quantity information, the water meter includes at least one quantity detection device by which the information is acquired through measurement. In this regard, the water meter may be designed, for example, as an impeller water meter with an impeller rotating according to the flow rate, or as a volume counter with a fixed or movable measuring chamber partition wall, or as an ultrasonic meter with a unit for generating an ultrasonic beam emitted into the water, based on which the quantity information is determined.
[0010] At least one temperature sensing device (particularly a component of a water meter) is configured to acquire at least one temperature reading. Therefore, the temperature sensing device may protrude into the measuring chamber, or at least a portion thereof may be arranged within the measuring chamber. For example, the temperature-dependent conductivity or related parameters of the measuring element of the temperature sensing device can be determined by the temperature sensing device, which may also be referred to as a thermometer unit. Since the measuring element is in thermal contact with the water, the temperature information can be determined based on the corresponding measured value.
[0011] By storing at least one temperature value in a data storage device, a measurement or information is preserved, through which the temperature of water present in the water supply network can be determined. This information can then be retrieved at a later time. The data storage device can be a component of an evaluation apparatus. The evaluation apparatus can be configured to perform the method according to the invention, particularly to at least verify that the preservation conditions are met.
[0012] This invention provides a mechanism whereby a preservation condition is met or can only be met when quantitative information, or at least one piece of quantitative information, indicates that the amount of water passing through the water meter within the current time interval exceeds a predetermined limit value. The limit value is large enough that the temperature of the water currently present in the water meter corresponds at least substantially to the temperature in the water supply network, particularly with a near-certain probability. Specifically, it is conceivable that the limit value is a fixed, predetermined value. In this case, the limit value can correspond to a larger amount of water than is present in the water meter area (particularly in the measuring chamber or connecting device). For example, the preservation condition is met or can only be met when the amount of water drawn at the point of consumption (i.e., the amount of water passing through the flow meter or connecting device) exceeds the limit value, particularly over a certain period of time.
[0013] It is conceivable that at least one quantity piece of information and / or at least one temperature piece of information is acquired at predetermined, particularly constant, time intervals. For example, information can be acquired cyclically at intervals of a few seconds (e.g., two seconds). Thus, the corresponding acquisition can also represent a sufficient dataset for evaluation regarding the aforementioned billing purposes. Preferably, the storage conditions are also verified at predetermined time intervals, particularly cyclically.
[0014] It is conceivable that, under the condition that the preservation conditions are met, at least one piece of temperature information that has been optionally pre-stored in the data storage is overwritten by at least one piece of current temperature information. However, it is preferable to store at least one piece of current temperature information separately, provided that at least one piece of temperature information has already been stored in the data storage (especially since the preservation conditions have already been met previously). This improves the dataset, based on which the temperature of the water in the water supply network can be verified. According to this embodiment, the stored values of multiple pieces of temperature information form a data record representing a time series, which can also be referred to as a data history log or historical data record.
[0015] In particular, to obtain the most robust results possible from the evaluation of available data, at least one current quantity piece of information, in addition to at least one current temperature piece of information, can be stored in the data storage. Therefore, for example, the result or value of the temperature of water existing in the water supply network can be correlated with the corresponding quantity information in terms of measurement accuracy. Thus, it is conceivable that for a small corresponding water quantity determined based on the corresponding quantity information, the assumed measurement error of at least one temperature piece of information is large. Furthermore, in the corresponding evaluation process, the possible systematic relationship between the values related to the water temperature existing in the water supply network and the water quantity can be considered. Therefore, for a small corresponding water quantity, a large systematic bias in this regard can be assumed.
[0016] Preferably, the present invention provides a connection device, particularly a water meter, to include a connection-side transmission device through which a communication link can be established to a user-side transmission device (particularly a supplier-side transmission device), wherein at least one temperature information stored in a data memory is transmitted from the connection device to the user-side transmission device via the communication link within the scope of readout processing. For example, for the aforementioned billing purposes, the corresponding consumption data of the water meter is typically read at predetermined time intervals (e.g., monthly). During processing, the stored temperature information is transmitted separately, thus providing it for further evaluation purposes. A wireless communication link (e.g., a radio link) can be established as the communication link. Therefore, the connection-side transmission device and the user-side transmission device are, or include, suitable devices used as transmitters or receivers. Thus, the user-side transmission device can be a component of a reader configured to read or receive corresponding values as long as it is sufficiently close to the connection-side transmission device, which can then be stored and / or output.
[0017] It is conceivable that, within the scope of the readout processing, in addition to at least one piece of temperature information, at least one piece of quantity information is transmitted from the connection device to the user-side transmission device via a communication link. As mentioned earlier, the measurement error associated with the corresponding temperature information can be determined, for example, based on the quantity information; therefore, the additional transmission of the quantity information enables its use in this way. Thus, the data record provided or read out preferably includes not only values associated with the corresponding time, in this respect multiple pieces of temperature information, but also, in particular, values of multiple pieces of quantity information assigned to the corresponding time.
[0018] Furthermore, according to the present invention, it is conceivable that the connection device (especially a water meter) includes an output device through which one or more stored temperature information entries stored in a data memory are output. The output device may be or include a digital display, and analog output devices, such as a scale with pointers, may also be provided. Within the scope of this embodiment, the current value of at least one temperature information entry can be directly read via the output device, particularly when the currently captured temperature information is not stored, providing only a determination of the temperature of water existing in the water supply network based on it.
[0019] It is conceivable that at least one piece of temperature information will also be used for other purposes or evaluations. Therefore, it is preferable to use at least one additional piece of temperature information within the scope of quantitative measurements related to total water consumption. Thus, the current temperature of the water passing through the water meter is essentially a parameter that affects the value or result regarding current consumption, especially since the density of water (i.e., the mass per unit volume) depends on the temperature of the water.
[0020] Alternatively, it is conceivable that at least one additional temperature information is used within the range of achieving the anti-frost function. Therefore, to verify the satisfaction of frost conditions, particularly by means of an evaluation device, the frost conditions will be satisfied or can only be satisfied when at least one temperature information indicates that the water in the area of the connected device or water meter currently has a temperature at which ice is expected to form now or soon. When the frost conditions are satisfied, particularly by means of the evaluation device, a signal output can be provided to eliminate or reduce this risk. For example, the signal output can result in an alarm signal (particularly an audible output) being output to the user, thereby notifying the user of the risk. Alternatively, the signal can be output to a heating device, in which case the water temperature is increased by the heating device.
[0021] Furthermore, the present invention relates to a determining device for determining the temperature of water present in a water supply network, wherein the water supply network is connected to consumption points arranged in a building via a connection device extending from the outside to the building, wherein the determining device includes or is designed to be a water meter of the connection device also arranged in the building. According to the invention, the problem solved by the invention is addressed in this determining device by the fact that at least one quantity of information related to the amount of water reaching the consumption point via the connection device can be obtained by the quantity detection device of the determining device, wherein at least one temperature of information related to the temperature of water located in the water meter area can be obtained by the temperature detection device of the determining device, wherein the evaluation device of the determining device is configured to verify the satisfaction of a preservation condition, wherein the preservation condition is satisfied or can only be satisfied when the quantity information or at least one quantity of information indicates that the temperature of water located in the water meter area corresponds to the temperature of water present in the water supply network, wherein the evaluation device is further configured to generate and output a control command when the preservation condition is satisfied, the control command implementing the storage of at least one currently acquired temperature information in a data memory. Preferably, the determining device is a connection device or a water meter. All advantages, features, and aspects explained in the method according to the invention are equally applicable to the determining device according to the invention, and vice versa. Attached Figure Description
[0022] Other advantages, features, and aspects of the invention will become clear from the exemplary embodiments explained below and from the accompanying drawings. In the drawings:
[0023] Figure 1 This diagram illustrates a determining device according to an exemplary embodiment of the present invention, which is designed as a connecting device or a water meter.
[0024] Figure 2 It indicates Figure 1 Detailed diagram of the water meter.
[0025] Figure 3 A flowchart illustrating a method according to an example embodiment of the present invention is shown, the method being based on Figure 1 and 2 The determined device in the middle is used to perform, and
[0026] Figure 4 This indicates that it is used when execution is based on Figure 3 The method of interpretation is to record the collected data graphically. Detailed Implementation
[0027] Figure 1A schematic diagram of a connecting device 3 is shown, which includes a water meter 4 and connects the water supply network 1 to the consumption point 2. The connecting device 3 and the water meter 4, in various cases, implement the determining device 5 according to the exemplary embodiment of the invention, because the water meter 4 (and therefore sometimes the connecting device 3 including the water meter 4) possesses all the features necessary for the invention. The water supply network 1 is connected to the consumption point 2 via pipes 6 and 7 of the connecting device 3 and via the water meter 4. The pipe 6 connecting the water supply network 1 to the water meter 4 extends through the exterior wall 8 of the building. For clarity, Figure 1 Other components of the connecting device 3, such as the extension spindle and the stop valve, which are not shown in the diagram, are not included. Figure 2 Details of water meter 4 are shown, in which the flow direction of water drawn from water supply network 1 and supplied to consumption point 2 during processing is indicated by arrows. The amount of water drawn from water supply network 1 to consumption point 2 is determined by water meter 4, for which the water passes through measuring chamber 9.
[0028] This invention relates to determining the temperature of water present in a region of a water supply network 1, the determination being performed by a determining device 5. A problem arising in this process is that the water in the determining device 5 (through which the temperature determination is performed) is located inside a building. Specifically, the water in the measuring chamber 9 is supplied for this purpose. Conversely, the water supply network 1 is located outside the building, and therefore the water present there typically has a lower temperature than the water in the measuring chamber 9. These circumstances, and the resulting problems, that complicate the measurement of the temperature of water in the water supply network 1 by means of the water meter 4 or components of the determining device 5, will be overcome within the scope of this invention.
[0029] For further reference Figure 1 and 2 According to an example embodiment of the present invention, the method will be based on Figure 3 To explain, among which Figure 3 A flowchart illustrating this aspect is provided. The method includes steps 10 to 13, wherein the evaluation device 14 of the water meter 4 is designed and configured to perform these steps, provided that the explanation given below does not deviate from it. The evaluation device 14 may also be a component separate from the water meter 4 and connected to the device 3, in which case only the device 3 (not the water meter 4) forms the determining device 5 according to the invention.
[0030] In the first step 10, a quantity information 15 and a temperature information 16 are acquired by the quantity detection device 17 and the temperature detection device 18, respectively. The detection devices 17 and 18, connected to the evaluation device 14, are each components of the water meter 4. For this purpose, the detection devices 17 and 18 acquire measurements associated with the corresponding information 15 and 16, and these measurements are output to the evaluation device 14. Preferably, multiple pieces of information 15 and 16 are acquired cyclically, for example, in two-second increments.
[0031] Quantity information 15 is determined by quantity detection device 17. Quantity detection device 17 is a measuring device that allows the output of a suitable measurement signal, which is sent to evaluation device 14 for evaluation purposes. For example, water meter 4 can be designed as an impeller water meter with an impeller rotating based on flow rate, a volume meter with a fixed or movable measuring chamber partition wall, or an ultrasonic meter with a unit for generating an ultrasonic beam emitted into the water. Details regarding quantity detection device 17 are well known to those skilled in the art and will not be explained in detail here. Specifically, quantity information 15 relates to the flow rate or volume of water through measuring chamber 9 and specifies the amount or volume of water flowing through measuring chamber 9 in the current measurement interval, which has a length of two seconds. Quantity information 15 is also processed by evaluation device 14 for billing purposes. Thus, in particular, the total amount of water drawn in the current reading cycle is determined, displayed or output by output device 19 of water meter 4 (designed as a display), and stored in data memory 20 of evaluation device 14 for subsequent reading of corresponding consumption data.
[0032] Temperature information 16 is determined by a temperature detection device 18. The temperature detection device 18 is a measuring device that allows the output of a suitable measurement signal, which is sent to an evaluation device 14 for evaluation purposes. The temperature detection device 18 is implemented as a thermometer unit extending into the measuring chamber 9. The components of the temperature detection device extending into the measuring chamber 9 include a measuring element whose conductivity depends on the temperature of the water arranged in the measuring chamber 9 and thus in thermal contact with the measuring element. For this purpose, a measurement signal depending on the conductivity is generated and output to the evaluation device 19, which then uses these measurement signals to determine the temperature of the water in the measuring chamber 9, which represents the corresponding temperature information 16. Specifically, temperature information 16 specifies the temperature (in °C) of the water currently located in the measuring chamber 9. Similar to acquiring quantity information 15, temperature information 16 is acquired cyclically at two-second intervals.
[0033] In the second step 11 of the method, the evaluation device 14 is used to verify that the preservation conditions are met, which depend on the quantity information 15. The preservation conditions are met when the quantity information 15 determines that the temperature of the water in the area of the determining device 5 (i.e., the temperature of the water in contact with the temperature detection device 18 and therefore located in the measuring chamber 9) at least substantially corresponds to the temperature of the water in the water supply network 1.
[0034] Specifically, when quantity information 15 indicates that the water volume transmitted through connection device 3 or water meter 4 within the current time interval exceeds a predetermined fixed limit value 23 (see... Figure 4When the current time interval is such that the water in the measuring chamber 9 has at least substantially the same temperature as the water in the water supply network 1, the water in the measuring chamber 9 was just before this point in the water supply network 1 (due to the water flowing through the connecting device 3) and was not significantly heated. Specifically, the limit value 23 is selected as the value corresponding at least to the amount of water present in the water meter 4 or the measuring chamber 9 and in the components of the connecting device 3 arranged upstream of the water meter 4. Thus, as an example, in this example embodiment, the limit value corresponds to the amount of water present in the pipe 6 and in the connecting components (not shown) used to connect the connecting device 3 to the water supply network 1, or the limit value depends on that amount of water. As an example, in this case, the limit value 23 is twice that amount of water.
[0035] To better understand the storage conditions, refer to Figure 4 ,Should Figure 4 A coordinate system is shown, representing possible example data points or values for information 15 and 16. The horizontal axis 21 relates to time, and the vertical axis 22 relates to the values of information 15 and 16. The value of quantity information 15 is represented by a bar chart. The value of temperature information 16 is represented by a scatter plot, in which points are connected by lines. Furthermore, the limit value 23 that determines whether the storage conditions are met is plotted as a horizontal line.
[0036] Furthermore, the relationship between quantity information 15 and temperature information 16 also changes from... Figure 4 The curves shown become clear. Starting from the vertical axis 22 and moving to the right, for the first five values of temperature information 16, it is evident that the value is essentially constant. This temperature corresponds to the temperature of the room in the building where water meter 4 is located. During this time, quantity information 15 indicates that no water is being drawn from the component at consumption point 2, thus causing temperature information 16 to remain constant during this time.
[0037] Starting again from the vertical axis 22 and moving right, a certain amount of water is drawn from the component at consumption point 2 between the fifth and sixth measurement points related to temperature information 16, but the amount of water is slightly less than the limit value 23. Even though the preservation condition is not met at this time, the process of temperature information 16 in this area indicates a significant drop in the temperature of the water located in measurement chamber 9, because the water flows in from the water supply network 1, where the water temperature is correspondingly lower. The temperature of the water in measurement chamber 9 then rises according to Newton's law of cooling, where the re-drawing at the component at consumption point 2 causes another point or time for the value of temperature information 16 to drop. Counting right from the vertical axis 22, the limit value 23 is exceeded at the fourth line of quantity information 15, which causes a corresponding drop in the value of temperature information 16. The preservation condition is met at this time 24, so it can be assumed that the value of the acquired temperature information 16 reflects the temperature present in the water supply network 1. All eight times 24 when the preservation condition is met are appropriately marked in the figure.
[0038] If the storage conditions are not met, the method continues to the first step 10, where information 15 and 16 are retrieved again and subsequently updated. Once the storage conditions are met, in the next step 12, the corresponding multiple currently available pieces of information 15 and 16 and their associated times are stored in the data memory 20 of the evaluation device 14. In this case, it is theoretically possible to overwrite the last value stored when the storage conditions are met. However, such overwriting is not contemplated in this example embodiment; therefore, the time and the values of information 15 and 16 stored in the data memory 20 form a data record representing a time series. Regarding Figure 4 The time period shown includes eight data points, each with three values: the corresponding time, the associated quantity information 15, and the associated temperature information 16.
[0039] In the next step 13, a cyclic readout process is performed, in which the corresponding data record is read from or retrieved from the supplier's component. For example, this readout process is executed monthly, during which the corresponding read data record is deleted from the data storage 20 (however, deletion is not mandatory). See again... Figure 2 The water meter 4 includes a connection-side transmission device 25. Furthermore, the readout process is implemented via a reader 26, wherein a user-side or supplier-side transmission device 27 is brought near the water meter 4 or the connection-side transmission device 25, and a wireless communication link 28 is formed between the connection-side transmission device 25 and the supplier-side transmission device 27. The communication link 28 is used to transmit data records, which are stored in a data memory 20 and, in addition to the aforementioned consumption data, also involve time and information 15, 16.
[0040] The data transmitted within the scope of step 13 regarding information 16, 17 and the corresponding relevant time are used to verify that the water supply network 1 complies with the maximum permissible temperature range. Specifically, it verifies whether the available multiple temperature information 16 clearly indicates that the maximum permissible temperature of the water in the water supply network 1 has been exceeded. In this document, in addition to the multiple temperature information 16, corresponding multiple available quantity information 15 is also included. Therefore, it is particularly evident that, based on Figure 4 The value of the corresponding temperature information 16 will become lower as the value of the corresponding associated quantity information 15 increases. This is because the temperature value becomes closer to the temperature in the water supply network 1 as the flow rate increases. In particular, this performance arises due to hysteresis effects, such as because the room temperature (which also corresponds to room temperature) also affects the temperature of the water present in the measuring chamber 9. For example, these cases can be considered by associating the value associated with the temperature information 16 with an error, which will be larger when the value of the corresponding associated quantity information 15 is smaller. Alternatively, the system effect can also be included in the evaluation, for example, based on a model.
[0041] Additionally, note the following fact: In this example, the acquisition of temperature information 16 is used not only to verify compliance with the maximum permissible temperature in the water supply network 1, but also, within the scope of quantitative measurements related to total water consumption, to determine consumption data. Therefore, in this regard, the insight that the current temperature of the water flowing through flow meter 4 affects the density of the water is considered, and this should therefore be taken into account when determining consumption data.
[0042] Furthermore, the temperature information 16 is used within the range required to achieve the anti-frost function. Therefore, not only is the current temperature information 16 output to the user via the output device 19, but the evaluation device 14 is also used to verify the fulfillment of frost conditions based on the corresponding current temperature information 16. Frost conditions are met when the corresponding current temperature information 16 indicates that the water currently present in the determining device 5 may freeze due to the corresponding low temperature. When frost conditions are met, the evaluation device 14 is used to output a signal designed to eliminate or reduce this risk. This signal output is implemented as a warning output, such as an audible warning output, via the output device 19. Alternatively, the signal can be output to the heating device (not shown in detail) of the determining device 5 or the water meter 4, so that the water temperature is increased by the heating device.
[0043] Additionally, the following provides information based on... Figure 3Possible variations of the method of interpretation are also within the scope of this invention. Therefore, it is conceivable that after the execution of step 10 (i.e., the acquisition of information 15, 16), instead of verifying the satisfaction of the preservation conditions, these values are subsequently stored in the data memory 20. Thus, step 11 is skipped first, so the data record created in the data memory 20 includes not only the values of information 15, 16 and their corresponding time values present when the preservation conditions are met, but also all values acquired in this regard, specifically, regardless of the satisfaction of the preservation conditions. The created data record is then transmitted to the reader 16 (wherein the preservation conditions are verified and values unusable for monitoring temperature in the connected water supply network 1) within the scope of step 13, and subsequently implemented on the user's or supplier's component.
[0044] List of reference numerals
[0045] 1. Water supply network
[0046] 2 Consumption Points
[0047] 3. Connecting device
[0048] 4 Water meters
[0049] 5. Determining device
[0050] 6 pipes
[0051] 7 Pipelines
[0052] 8 outer wall
[0053] 9. Measuring Chamber
[0054] 10 steps
[0055] 11 steps
[0056] 12 steps
[0057] 13 steps
[0058] 14 Evaluation Device
[0059] 15. Quantity Information
[0060] 16 Temperature Information
[0061] 17. Detection device
[0062] 18 Detection Device
[0063] 19 Output devices
[0064] 20 Data Storage
[0065] 21. Horizontal axis
[0066] 22. Vertical axis
[0067] 23 Limit Values
[0068] 24 hours
[0069] 25 Transmission devices
[0070] 26 Readers
[0071] 27 Transmission device
[0072] 28 Communication Link
Claims
1. A method for determining the temperature of water present in a water supply network (1), wherein, The water supply network (1) is connected to the consumption point (2) located in the building via a connection device (3) extending from the outside into the building. The connection device (3) includes a water meter (4) also located in the building. At least one quantity information (15) related to the amount of water reaching the consumption point (2) via the quantity detection device (17) of the water meter (4) is acquired. At least one temperature information (16) related to the temperature of the water located in the area of the water meter (4) is acquired via a temperature detection device (18). The storage condition is verified. If the quantity information (15) or at least one quantity information (15) indicates that the temperature of the water located in the area of the water meter (4) corresponds to the temperature of the water present in the water supply network (1), the storage condition will be met or can be met. If the storage condition is met, at least one currently acquired temperature information (16) is stored in the data storage (20) and / or at least one currently acquired temperature information (16) is used to determine the temperature of the water present in the water supply network (1).
2. The method according to claim 1, characterized in that: If the quantity information (15) or at least one quantity information (15) indicates that the amount of water passing through the water meter (4) in the current time interval is greater than the predetermined limit value (23), the preservation condition will be met or can only be met.
3. The method according to claim 1, characterized in that: The predetermined limit value (23) is a fixed predetermined value.
4. The method according to any one of the preceding claims, characterized in that: At least one quantity information (15) and / or at least one temperature information (16) is acquired at a predetermined time interval, particularly at a constant time interval.
5. The method according to any one of the preceding claims, characterized in that: If the storage conditions are met, at least one piece of current temperature information (16) is stored in the data storage (20) as long as at least one piece of temperature information (16) has been stored in the data storage (20).
6. The method according to claim 5, characterized in that: In addition to at least one current temperature information (16), at least one current quantity information (15) is stored in the data memory (20).
7. The method according to any one of the preceding claims, characterized in that: The connection device (3), particularly the water meter (4), includes a connection-side transmission device (25) through which a communication link (28) to the user-side transmission device (27) can be established, wherein, within the scope of the readout processing, at least one temperature information (16) stored in the data memory (20) is transmitted from the connection device (3) to the user-side transmission device (27) via the communication link (28).
8. The method according to claims 6 and 7, characterized in that: Within the scope of the readout processing, in addition to at least one temperature information (16), at least one quantity information (15) is transmitted from the connection device (3) to the user-side transmission device (27) via the communication link (28).
9. The method according to any one of claims 7 and 8, characterized in that: Establish a wireless communication link (28) as a communication link (28).
10. The method according to any one of the preceding claims, characterized in that: The connection device (3), particularly the water meter (4), includes an output device (19) that outputs one or more stored temperature information (16) stored in the data storage (20) through the output device (19).
11. The method according to any one of the preceding claims, characterized in that: Within the range of quantity measurements related to total water consumption and / or in addition to using at least one temperature information in implementing the anti-frost function (16).
12. A determining device (5) for determining the temperature of water present in a water supply network (1), wherein, The water supply network (1) is connected to the consumption point (2) located in the building via a connection device (3) extending from the outside into the building. The determining device (5) includes or is designed to include a water meter (4) located in the connection device (3) located in the building. At least one quantity information (15) related to the amount of water reaching the consumption point (2) via the connection device (3) can be obtained by the quantity detection device (17) of the determining device (5). At least one temperature information (16) related to the temperature of the water located in the area of the water meter (4) can be obtained by the temperature detection device (18) of the determining device (5). The evaluation device (14) of the determining device (5) is configured to verify the satisfaction of the preservation conditions. If the quantity information (15) or at least one quantity information (15) indicates that the temperature of the water located in the area of the water meter (4) corresponds to the temperature of the water present in the water supply network (1), the preservation conditions will be satisfied or can be satisfied. The evaluation device (14) is also configured to generate and output a control command when the preservation conditions are satisfied. The control command enables the storage of at least one currently acquired temperature information (16) in a data memory (20).