Household water box control system and control method of direct drinking water for smart community

Abstract

The invention discloses a home-entry water box control system and control method of direct drinking water for an intelligent community, and relates to the technical field of home-entry water box systems. According to the invention, a user can set the retention time of the direct drinking water in the direct drinking water conveying pipeline through the mobile phone terminal, and the home-entry water box detects the retention time of the home-entry direct drinking water in the direct drinking water conveying pipeline in real time and judges whether the retention time is equal to or exceeds the preset time; if yes, the direct drinking water in the direct drinking water conveying pipeline is discharged through the drainage pump, so that the direct drinking water in the direct drinking water conveying pipeline keeps flowing and replacing, and the water quality of the direct drinking water is guaranteed; meanwhile, the discharged direct drinking water flows back to the central purification center through the backflow pipeline and can enter the direct drinking water conveying pipeline or the common domestic water pipeline after being purified again, resources are not wasted, the cost of the backflow direct drinking water is compensated, part of the cost of the backflow direct drinking water can be compensated for users, and the user experience is improved. And the expenditure of the user is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of household water box systems, and in particular to a household water box control system and a control method for direct drinking water in a smart community. Background Art

[0002] Direct drinking water to households is currently a diversified water use construction based on smart communities. The tap water provided by the municipality is used as domestic drinking water. The domestic water and direct drinking water in the tap water are separated, and a separate pipe network is set up. The tap water is deeply processed by special technology to become directly drinkable pure water. Specifically, the principle of direct drinking water to households is to set up a central purification center in the community, conduct secondary deep purification of tap water, and use purification processes such as multi-media, carbon adsorption, ultrafiltration, PP cotton, and aerospace RO membranes to remove heavy metals, residual chlorine, bacteria and other impurities in the water, and then transport it to residents through food hygiene-grade pipelines. Although household drinking water is transported through food-grade pipelines to ensure hygienic and safe water delivery, generally speaking, the household drinking water pipelines in residential communities are longer and contain more water. If users do not use drinking water frequently, the drinking water will be stored in the delivery pipeline after flowing out of the central purification center. If this stored water remains in the delivery pipeline for a long time without flowing or being replaced, the quality of the household drinking water will deteriorate, and may even fail to meet the direct drinking water standards. Summary of the invention

[0003] In view of the problems existing in the above-mentioned existing household water box system solutions, the present invention is proposed.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: A method for controlling direct drinking water supply to households in a smart community comprises the following steps: Step S100: setting a preset time for direct drinking water to remain in the direct drinking water delivery pipeline; Step S200: Detecting the retention time ΔT of household drinking water in the drinking water delivery pipeline; Step S300: determine whether the retention time ΔT is equal to or exceeds the preset time, if so, proceed to the next step, if not, determine that the direct drinking water is in a non-retention state; Step S400: Turn on the drainage pump and the drainage solenoid valve to drain the direct drinking water, and drain the direct drinking water retained in the direct drinking water delivery pipeline to the return pipeline, and the direct drinking water flows back to the established central purification center through the return pipeline; Step S500: charging the returned drinking water; Step S600: using a stepped compensation method to compensate for the cost of returned drinking water.

[0005] As a preferred solution of the control method for direct drinking water into households in a smart community described in the present invention, in step S200, the specific method for detecting the retention time of direct drinking water entering households in the direct drinking water delivery pipeline includes: first, detecting whether the flow meter for direct drinking water entering households currently has feedback information, and counting the current detection time as T1, reading the time of the last feedback information from the flow meter, counting it as T2, and the retention time △T satisfies the following formula: T1-T2=△T; second, setting a fixed time T0, and detecting whether the flow meter for direct drinking water entering households has feedback information according to the set fixed time T0, and the retention time △T=fixed time T0.

[0006] As a preferred solution of the control method for direct drinking water into households in the smart community described in the present invention, in step S400, the method of turning on the drain pump and the drain solenoid valve to discharge direct drinking water is as follows: set the drainage time to T`, turn on the drain pump and the drain solenoid valve, and when the set drainage time T` is reached, turn off the drain pump and the drain solenoid valve.

[0007] As a preferred solution of the control method for direct drinking water supply to households in a smart community described in the present invention, the step-by-step compensation method in step S600 is as follows: (1) When 0<Q≤Q1, the compensation fee is M yuan / L; (2) When Q1<Q≤Q2, the compensation fee is a·M yuan / L; (3) When Q>Q2, the compensation fee is b·M yuan / L, wherein Q represents the flow rate of the returned direct drinking water, Q1 and Q2 are the flow rates corresponding to the set return direct drinking water compensation standard, and Q1<Q2, M represents the standard billing of direct drinking water, and 0<b<a<1.

[0008] As a preferred solution of the control method for direct drinking water supply to households in a smart community described in the present invention, it also includes the step of synchronously displaying water quality: synchronously displaying the water quality test results of the central purification center to the user end.

[0009] Another object of the present invention is to provide a household water box control system for direct drinking water in a smart community, comprising: The Internet of Things module is used to communicate with the user terminal device and set the preset time for the direct drinking water to remain in the direct drinking water delivery pipeline through the user terminal device; The detection module detects the retention time △T of household drinking water in the drinking water pipeline; A judgment module, judging whether the retention time ΔT is equal to or exceeds the preset time; The direct drinking water discharge control module turns on the drainage pump and the drainage solenoid valve to discharge the direct drinking water, and discharges the direct drinking water retained in the direct drinking water delivery pipeline to the return pipeline; Direct drinking water flow detection module, used to detect the usage flow of direct drinking water through a flow meter; The billing module is used to calculate the fee based on the usage flow of direct drinking water; The cost compensation module adopts a tiered compensation method to compensate for the cost of returned drinking water.

[0010] As a preferred solution of the household water box control system for direct drinking water in the smart community described in the present invention, it also includes a water quality synchronization module, which includes a communication module for communicating with the central purification center and a display module for synchronously displaying the water quality detection results of the central purification center.

[0011] As a preferred solution of the household water box control system for direct drinking water in smart communities described in the present invention, the user terminal device is a smart phone or a computer.

[0012] As a preferred solution of the household water box control system for direct drinking water in the smart community described in the present invention, the detection module includes an information detection module for detecting whether the flow meter for direct drinking water entering the household currently has feedback information and counting the current detection time as T1, a reading module for reading the time T2 of the last feedback information of the flow meter, and a calculation module for calculating the retention time △T; or, the detection module includes a setting module for setting a fixed time T0, and an information detection module for detecting whether the flow meter for direct drinking water entering the household has feedback information according to the set fixed time T0.

[0013] Another object of the present invention is to provide a direct drinking water supply system for smart communities, comprising: a direct drinking water supply pipeline and a flow meter, and also comprising a drainage pipeline connected to the direct drinking water supply pipeline, a drainage solenoid valve arranged at the input end of the drainage pipeline, and a return pipeline connected to the drainage pipeline through a drainage pump, and the return pipeline is connected to a central purification center; it also comprises the direct drinking water supply system for smart communities as described above, and the flow meter, drainage solenoid valve and drainage pump are controlled by the direct drinking water supply system for smart communities.

[0014] The beneficial effects of the present invention are as follows: according to the present invention, the user can set the retention time of direct drinking water in the direct drinking water water supply pipeline through the mobile phone terminal, and the household water box detects the retention time of the household direct drinking water in the direct drinking water water supply pipeline in real time, and determines whether the retention time is equal to or exceeds the preset time. If so, the direct drinking water in the direct drinking water water supply pipeline is discharged through the drainage pump, so that the direct drinking water in the direct drinking water water supply pipeline keeps flowing and replacing, thereby ensuring the water quality of the direct drinking water; at the same time, the discharged direct drinking water flows back to the central purification center through the reflux pipeline, and after purification again, it can enter the direct drinking water delivery pipeline or the ordinary domestic water pipeline again, not only does it not waste resources, but the present invention also compensates for the cost of the returned direct drinking water, and part of the cost of the returned direct drinking water will be compensated to the user, saving the user's expenses. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0016] Figure 1 This is a schematic diagram of the process of Example 1 of the present invention.

[0017] Figure 2 This is a principle block diagram of Example 2 of the present invention.

[0018] Figure 3 This is a schematic diagram of the principle of Example 3 of the present invention.

[0019] Among them, the names of the components corresponding to the figure numbers are as follows: 1-direct drinking water supply pipeline, 2-flow meter, 3-drainage pipeline, 4-drainage solenoid valve, 5-drainage pump, 6-reflux pipeline, 7-household water box control system for direct drinking water in smart communities, 8-user terminal, 9-central purification center. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0023] Example 1 Reference Figure 1 , which is the first embodiment of the present invention, and provides a method for controlling direct drinking water into households in a smart community, comprising the following steps: 1. Step S100: Setting a preset time for direct drinking water to remain in the direct drinking water delivery pipeline.

[0024] The setting method can be to set it at the water box at the entrance of the house, or to connect it to the user's mobile phone terminal or computer terminal through the Internet of Things, and the user can set it on the mobile phone terminal or computer terminal; the preset time is the set value, and the user can set it according to daily usage, for example: set the preset time to 6 hours, the user can also set it in temporary special circumstances, such as business trips, travel, etc. that require a long delay, then the preset time can be set to 999 hours (similar to infinity), then the retained direct drinking water will not be replaced during this period of time, after the user comes back, just start the water replacement of the retained direct drinking water, the user can set the retention of direct drinking water more flexibly according to the preset time. 2. Step S200: Detecting the retention time ΔT of household direct drinking water in the direct drinking water pipeline.

[0025] In this step, the specific method for detecting the retention time of household drinking water in the drinking water pipeline mainly includes two situations: The first method is to detect whether the flow meter for direct drinking water into the household currently has feedback information, and count the current detection time as T1, read the time when the flow meter last fed back information, count it as T2, and the retention time △T satisfies the following formula: T1-T2=△T; for example, if the time for detecting whether the flow meter currently has feedback information is 14h30m on the same day, and the time when the flow meter last fed back information was read was 12h30m, then △T=14h30m-12h30m=2h.

[0026] The second method is to set a fixed time T0, and detect whether the flow meter of direct drinking water entering the household has feedback information according to the set fixed time T0, and the retention time △T = fixed time T0. For example: if the set fixed time is 3h, then the flow meter of direct drinking water entering the household is detected every 3h to see whether there is feedback information. If so, it is judged that the direct drinking water is in a non-retention state, if not, it is judged that the direct drinking water is in a retention state.

[0027] 3. Step S300: Determine whether the retention time ΔT is equal to or exceeds the preset time. If so, proceed to the next step. If not, determine that the direct drinking water is in a non-retention state.

[0028] For the first method in step S200, this step compares the calculated retention time △T with the preset time in step S100. When the retention time △T is greater than or equal to the preset time, it is judged that the direct drinking water in the direct drinking water pipeline is in a retention state, otherwise, it is in a non-retention state; for the second method in step S200, it is directly detected whether the flow meter of the direct drinking water entering the house has feedback information according to the set fixed time T0. When there is feedback information, it is judged that the direct drinking water is in a non-retention state. When there is no feedback information, the fixed time T0 is compared with the preset time in step S100. When the fixed time T0 is greater than or equal to the preset time, it is judged that the direct drinking water in the direct drinking water pipeline is in a retention state. Based on this setting logic, when the second method is adopted in step S200, its fixed time T0 should be equal to the preset time in step S100.

[0029] 4. Step S400: Turn on the drainage pump and the drainage solenoid valve to discharge direct drinking water.

[0030] The purpose of this step is to discharge the direct drinking water in the current direct drinking water pipeline when it is judged that the direct drinking water in the direct drinking water pipeline is in a retained state, so as to realize the flow and replacement of the direct drinking water. The method of discharging the direct drinking water is as follows: set the drainage time to T', turn on the drainage pump and the drainage solenoid valve, and when the set drainage time T' is reached, turn off the drainage pump and the drainage solenoid valve, wherein the drainage pump is used to provide drainage power, and the drainage solenoid valve is used to connect the drainage pipeline and the direct drinking water pipeline. The drainage time T' here is the set time. Due to the differences in the pipe layout of different floors and communities, in the initial state, the technicians in this field can set a value according to the floor where the user is located, the layout of the direct drinking water pipeline in the community, the operating power of the drainage pump, etc. when installing the direct drinking water into the household, so that the retained direct drinking water can be discharged or exhausted more, so as to achieve the purpose of the flow and replacement of the direct drinking water; in addition, the user can also set this drainage time according to his own usage habits, so it is not specifically limited here.

[0031] In order to avoid waste of water resources, in this embodiment, in this step, the direct drinking water retained in the direct drinking water supply pipeline is also discharged to the reflux pipeline, and then the discharged direct drinking water is returned to the established central purification center through the reflux pipeline. The central purification center purifies the returned direct drinking water and can circulate it to the direct drinking water supply pipeline again, or supply the returned direct drinking water to a conventional domestic water pipeline.

[0032] 5. Step S500: charging for the returned drinking water.

[0033] For users, the returned drinking water is essentially the drinking water used by the users. Therefore, in this step, the billing of the returned drinking water can be realized based on the flow meter, and the billing method is billing by flow rate.

[0034] Step 6 S600: Use a tiered compensation method to compensate for the cost of returned drinking water.

[0035] If the returned direct drinking water is charged at the normal rate, it will be a great economic loss and waste for the users. Based on this, it is not conducive to the application and promotion of the technology of the present invention. Therefore, in this step, a tiered compensation method is used to directly compensate the users for the returned direct drinking water. The compensated fees can be directly returned to the user's recharge account in the form of recharge returns. The replenishment return period can be implemented in units of days, weeks, months or quarters, and is not specifically limited here.

[0036] In this step, the tiered compensation method includes the following three situations: (1) When 0<Q≤Q1, the compensation fee is M yuan / L; (2) When Q1<Q≤Q2, the compensation fee is a·M yuan / L; (3) When Q>Q2, the compensation fee is b·M yuan / L, where Q represents the flow rate of the returned drinking water, Q1 and Q2 are the flow rates corresponding to the set compensation standard for returned drinking water, and Q1<Q2. The set value can be set by the staff, Q1 is the basic set value, for example, it can be 1L, 2L, etc. For the returned drinking water below the basic set value, this part of the fee can be fully returned to the user, so the direct drinking water standard is adopted. The fee compensation is carried out in accordance with the standard billing method, and the size of the basic setting value is set by the staff; M represents the standard billing of direct drinking water, which is consistent with the billing standard of direct drinking water used directly by users. a and b are coefficients and satisfy the following relationship: 0<b<a<1. Since the setting of direct drinking water discharge can be set by the user, different direct drinking water reflux situations will occur according to different users. When the direct drinking water refluxed by the user exceeds the basic setting value, the refluxed direct drinking water is compensated according to the coefficient of the direct drinking water standard billing. In order to avoid unnecessary waste, the compensation follows the principle: the more direct drinking water refluxed, the less the compensation fee standard, as shown in the following table; Reflux drinking water flow Q1 Q2 a b M Compensation 10L 1L 5L - 0.2 0.5 yuan / L 1 Yuan 0.5L 1L 5L - - 0.5 yuan / L 0.25 yuan 4L 1L 5L 0.1 - 0.5 yuan / L 0.2 yuan It should be noted that the above table is only for illustrative purposes, and the values ​​​​in it are only for reference and are not actual values.

[0037] Generally, the central purification center will be equipped with water quality testing equipment and display it on the display terminal of the central purification center. If users need to check the water quality, they need to go to the central purification center to check, which is not convenient. Therefore, this embodiment also includes the step of synchronously displaying the water quality, that is, synchronously displaying the water quality test results of the central purification center to the user end. The user end can be a household water box or a smart terminal such as the user's smartphone.

[0038] Example 2 Reference Figure 2, which is the second embodiment of the present invention, and which provides a household water box control system for direct drinking water in a smart community, comprising: The Internet of Things module is used to communicate with the user terminal device and set the preset time for the direct drinking water to remain in the direct drinking water pipeline through the user terminal device; wherein the user terminal device is a smart phone or a computer, and the user terminal has downloaded the corresponding APP or WeChat applet, and communication with the Internet of Things module is achieved based on the APP or WeChat applet, thereby achieving communication with the household water box control system for direct drinking water in the smart community.

[0039] A detection module detects the retention time △T of the direct drinking water entering the household in the direct drinking water delivery pipeline; in this embodiment, the detection module includes an information detection module for detecting whether the flow meter for direct drinking water entering the household currently has feedback information and counting the current detection time as T1, a reading module for reading the time T2 of the last feedback information of the flow meter, and a calculation module for calculating the retention time △T; or, the detection module includes a setting module for setting a fixed time T0, and an information detection module for detecting whether the flow meter for direct drinking water entering the household has feedback information according to the set fixed time T0.

[0040] The judging module judges whether the retention time ΔT is equal to or exceeds the preset time.

[0041] The direct drinking water discharge control module turns on the drain pump and the drain solenoid valve to discharge the direct drinking water, and discharges the direct drinking water retained in the direct drinking water delivery pipeline to the return pipeline. After the discharge is completed, the drain pump and the drain solenoid valve are closed.

[0042] The direct drinking water flow detection module is used to detect the usage flow of direct drinking water through a flow meter.

[0043] The billing module is used to calculate the fee based on the usage flow of direct drinking water.

[0044] The cost compensation module adopts a tiered compensation method to compensate for the cost of returned drinking water.

[0045] A water quality synchronization module includes a communication module for communicating with a central purification center and a display module for synchronously displaying water quality detection results of the central purification center.

[0046] It should be noted that the above-mentioned functional modules correspond to the method provided in Example 1, and their specific implementation can refer to the description of Example 1. For the sake of brevity, this embodiment will not go into details.

[0047] It should be understood that the above functional modules are only a logical function division, and there may be other divisions in actual implementation, such as units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0048] The above-mentioned functional modules can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of a software functional unit. If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor (processor) to perform all or part of the steps of each implementation method of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program code.

[0049] Example 3 Reference Figure 3 , which is the third embodiment of the present invention, and this embodiment provides a direct drinking water supply system for smart communities, including: a direct drinking water supply pipeline and a flow meter, and also includes a drainage pipeline connected to the direct drinking water supply pipeline, a drainage solenoid valve arranged at the input end of the drainage pipeline, a return pipeline connected to the drainage pipeline through a drainage pump, and the return pipeline is connected to the central purification center; it also includes the home water box control system for direct drinking water for smart communities provided in Example 2, and the flow meter, the drainage solenoid valve and the drainage pump are controlled by the home water box control system for direct drinking water for smart communities.

[0050] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A method for controlling direct drinking water into households in a smart community, characterized in that: The following steps are involved: Step S100: setting a preset time for direct drinking water to remain in the direct drinking water delivery pipeline; Step S200: Detecting the retention time ΔT of household drinking water in the drinking water delivery pipeline; Step S300: determine whether the retention time ΔT is equal to or exceeds the preset time, if so, proceed to the next step, if not, determine that the direct drinking water is in a non-retention state; Step S400: Turn on the drainage pump and the drainage solenoid valve to drain the direct drinking water, and drain the direct drinking water retained in the direct drinking water delivery pipeline to the return pipeline, and the direct drinking water flows back to the established central purification center through the return pipeline; Step S500: charging the returned drinking water; Step S600: using a stepped compensation method to compensate for the cost of returned drinking water.

2. The control method for direct drinking water into households in a smart community according to claim 1 is characterized in that: In the step S200, the specific method for detecting the retention time of the direct drinking water entering the household in the direct drinking water delivery pipeline includes: first, detecting whether the flow meter for direct drinking water entering the household currently has feedback information, and counting the current detection time as T1, reading the time of the last feedback information of the flow meter as T2, and the retention time △T satisfies the following formula: T1-T2=△T; second, setting a fixed time T0, and detecting whether the flow meter for direct drinking water entering the household has feedback information according to the set fixed time T0, and the retention time △T=fixed time T0.

3. The control method for direct drinking water into households in a smart community according to claim 2 is characterized in that: In the step S400, the method of opening the drain pump and the drain solenoid valve to discharge direct drinking water is as follows: set the drainage time to T', open the drain pump and the drain solenoid valve, and when the set drainage time T' is reached, close the drain pump and the drain solenoid valve.

4. The control method for direct drinking water into households in a smart community according to claim 3 is characterized in that: The step-by-step compensation method in step S600 is as follows: (1) when 0<Q≤Q1, the compensation fee is M yuan / L; (2) when Q1<Q≤Q2, the compensation fee is a·M yuan / L; (3) when Q>Q2, the compensation fee is b·M yuan / L, wherein Q represents the flow rate of the returned drinking water, Q1 and Q2 represent the flow rates corresponding to the set compensation standard for returned drinking water, and Q1<Q2, M represents the standard billing for drinking water, and 0<b<a<1.

5. The control method for direct drinking water into households in a smart community according to claim 4 is characterized in that: It also includes the step of synchronously displaying water quality: synchronously displaying the water quality test results of the central purification center to the user end.

6. A household water box control system for direct drinking water in a smart community, characterized in that: include: The Internet of Things module is used to communicate with the user terminal device and set the preset time for the direct drinking water to remain in the direct drinking water delivery pipeline through the user terminal device; The detection module detects the retention time △T of household drinking water in the drinking water pipeline; A judgment module, judging whether the retention time ΔT is equal to or exceeds the preset time; The direct drinking water discharge control module turns on the drainage pump and the drainage solenoid valve to discharge the direct drinking water, and discharges the direct drinking water retained in the direct drinking water delivery pipeline to the return pipeline; Direct drinking water flow detection module, used to detect the usage flow of direct drinking water through a flow meter; The billing module is used to calculate the fee based on the usage flow of direct drinking water; The cost compensation module adopts a tiered compensation method to compensate for the cost of returned drinking water.

7. The household water box control system for direct drinking water in smart communities according to claim 6 is characterized in that: It also includes a water quality synchronization module, which includes a communication module for communicating with a central purification center and a display module for synchronously displaying water quality detection results of the central purification center.

8. The household water box control system for direct drinking water in smart communities according to claim 7 is characterized in that: The user terminal device is a smart phone or a computer.

9. The household water box control system for direct drinking water in smart communities according to claim 8 is characterized in that: The detection module includes an information detection module for detecting whether the flow meter for direct drinking water supply to the household currently has feedback information and counting the current detection time as T1, a reading module for reading the time T2 of the last feedback information of the flow meter, and a calculation module for calculating the retention time △T; or, the detection module includes a setting module for setting a fixed time T0, and an information detection module for detecting whether the flow meter for direct drinking water supply to the household has feedback information according to the set fixed time T0.

10. A drinking water supply system for smart communities, comprising a drinking water delivery pipeline (1) and a flow meter (2), characterized in that: It also includes a drainage pipe (3) connected to the direct drinking water delivery pipe (1), a drainage solenoid valve (4) arranged at the input end of the drainage pipe (3), and a return pipe (6) connected to the drainage pipe (3) via a drainage pump (5), wherein the return pipe (6) is connected to a central purification center; and it also includes a household water box control system (7) for direct drinking water for smart communities as claimed in any one of claims 6 to 10, wherein the flow meter (2), the drainage solenoid valve (4) and the drainage pump (5) are controlled by the household water box control system for direct drinking water for smart communities.

Images