A water usage monitoring structure and method for underground hydrants

By installing adapters and electromagnetic water meters on underground fire hydrants, the problem of large-scale replacement of underground fire hydrants in northern China has been solved. This enables real-time monitoring of fire hydrant water usage and fault alarms, improving fire rescue efficiency and replacement efficiency.

CN119499599BActive Publication Date: 2026-03-27PIPE NETWORK MANAGEMENT BRANCH OF BEIJING WATERWORKS GRP CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-11-12
Publication Date
2026-03-27

AI Technical Summary

Technical Problem

In northern regions, it is difficult to replace existing underground fire hydrants with smart fire hydrants on a large scale, which affects traffic and construction efficiency. At the same time, the cost is high, and the water usage status cannot be effectively monitored, which affects the efficiency of fire rescue.

Method used

Design a water usage monitoring structure for underground fire hydrants, including an adapter, an electromagnetic water meter, and a threaded adapter. The electromagnetic water meter monitors pressure and flow, and communicates with the back-end integrated management system. A central processing module and an anomaly alarm module are set up to realize real-time monitoring of the fire hydrant's operating status and fault alarm.

Benefits of technology

It enables real-time monitoring of the pressure and flow of underground fire hydrants, improves the efficiency of large-scale updates, reduces the impact on traffic and daily life, ensures fire safety, saves costs, and prevents water from freezing and affecting rescue efforts in cold regions.

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Abstract

The application discloses a water consumption monitoring structure and method for an underground fire hydrant, and the water consumption monitoring structure comprises an adapter, an electromagnetic water meter and a jaw adapter; one end of the adapter is coaxially and fixedly connected with a water outlet I of a fire hydrant body, and the other end is coaxially and fixedly connected with one end of the electromagnetic water meter; one end of the jaw adapter is coaxially and fixedly connected with the electromagnetic water meter, and the other end is fixedly connected with a plug cap; the electromagnetic water meter can monitor the pressure and water flow of the underground fire hydrant, and obtain pressure data and water flow data I of the water outlet I; a communication module is arranged in the electromagnetic water meter and is used for communication between the electromagnetic water meter and an external background integrated management system; and the electromagnetic water meter can transmit the pressure data and the water flow data I to the background integrated management system through the communication module. The application can be directly installed on the underground fire hydrant, realizes the monitoring of the water consumption of the underground fire hydrant, and improves the large-area updating efficiency of intelligent fire hydrants.
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Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of fire safety, and particularly relates to a water use monitoring structure and method for underground fire hydrants. BACKGROUND

[0002] City safety is an important development goal and concept in China, and fire safety is an important part of city safety. The reliability of fire hydrants, as an important part of city fire safety, directly affects the efficiency of fire rescue. Therefore, the fire hydrants in the city need to be monitored to understand the water use status of the fire hydrants in time, so as to prevent the influence on rescue and waste of water resources.

[0003] In southern China, fire hydrants are mostly set on the ground, which is convenient for replacing the fire hydrants with intelligent fire hydrants. However, in northern China, in order to prevent the problem of impact damage and winter cracking of fire hydrants, underground fire hydrants are generally used, which are set in underground wells, the lower part of the fire hydrant is buried underground, and only the water use interface on the upper part is left; replacing all underground fire hydrants with intelligent fire hydrants will affect traffic and cause large-area water stop on the one hand, and is inconvenient for construction and has high cost and low efficiency on the other hand. SUMMARY

[0004] Therefore, the application provides a water use monitoring structure for underground fire hydrants, which can be directly installed on the underground fire hydrant to realize monitoring of the water use of the underground fire hydrant and improve the large-area updating efficiency of the fire hydrant.

[0005] The application is realized by the following technical scheme:

[0006] The water use monitoring structure for the underground fire hydrant comprises a fire hydrant main body, a jaw joint and a plug cap; the fire hydrant main body is provided with a water outlet I; the jaw joint is arranged at the water outlet I of the fire hydrant main body, and the plug cap is threadedly connected with the jaw joint.

[0007] The water use monitoring structure comprises an adapter, an electromagnetic water meter and a jaw adapter;

[0008] One end of the adapter is coaxially and fixedly connected with the water outlet I of the fire hydrant main body, and the other end is coaxially and fixedly connected with one end of the electromagnetic water meter; one end of the jaw adapter is coaxially and fixedly connected with the electromagnetic water meter, and the other end is fixedly connected with the plug cap.

[0009] The electromagnetic water meter can monitor the pressure and water outlet flow of the underground fire hydrant and obtain pressure data and water outlet flow data I of the water outlet I.

[0010] The electromagnetic water meter is provided with a communication module for communication between the electromagnetic water meter and an external background comprehensive management system.

[0011] The electromagnetic water meter can transmit the pressure data and the water flow data I to a background comprehensive management system through the communication module.

[0012] A water use monitoring method for an underground fire hydrant based on a water use monitoring structure for an underground fire hydrant, wherein the electromagnetic water meter is further provided with a central processing module, a pressure acquisition module, a flow acquisition module, and an abnormal alarm module.

[0013] The pressure acquisition module, the flow acquisition module, the abnormal alarm module, and the communication module can respectively communicate with the central processing module.

[0014] The pressure acquisition module acquires the aforementioned pressure data of the water outlet I and transmits the pressure data to the central processing module.

[0015] The flow acquisition module acquires the aforementioned water flow data I flowing out of the underground fire hydrant from the water outlet I and transmits the water flow data I to the central processing module.

[0016] The central processing module transmits the pressure data and the water flow data I to an external background comprehensive management system through the communication module.

[0017] The central processing module further judges the running state of the fire hydrant according to the pressure data and the water flow data I.

[0018] When the running state is normal, the central processing module transmits the normal running state data to the external background comprehensive management system through the communication module.

[0019] When the running state is abnormal, the central processing module transmits a control signal to the abnormal alarm module, and the abnormal alarm module alarms; at the same time, the central processing module further transmits the abnormal running state data to the external background comprehensive management system.

[0020] Advantages:

[0021] (1) The present application can be directly installed at the outlet of the existing underground fire hydrant, monitor the pressure and water flow of the underground fire hydrant, and transmit the data to the background comprehensive management system, so as to quickly realize the monitoring of the water use of the underground fire hydrant, improve the efficiency of the large-area intelligent monitoring and updating of the fire hydrant, and avoid the influence on traffic and other production and life.

[0022] (2) The split antenna of the present application extends upward from the bottom of the underground well and is fixedly arranged at the well mouth, so as to ensure the smoothness and reliability of the communication of the electromagnetic water meter.

[0023] (3) The electromagnetic water meter of the present application is provided with a positioning module, which is convenient for determining the distribution and positioning of the fire hydrant.

[0024] (4) The water use monitoring structure provided by the application can be directly assembled and then screwed into the main body of the underground fire hydrant by using the tooth buckle joint of the underground fire hydrant, thereby improving the installation efficiency of the water use monitoring structure.

[0025] (5) The water use monitoring structure provided by the application can be quickly assembled by connecting the adapter and the electromagnetic water meter through the clamp I and connecting the tooth buckle adapter and the electromagnetic water meter through the clamp II, thereby further improving the installation efficiency of the water use monitoring structure.

[0026] (6) The water use monitoring structure provided by the application uses the adapter to replace the tooth buckle joint provided on the underground fire hydrant, so that the size of the water use monitoring structure can be maximally shortened to prevent the water use monitoring structure from being too long and the water in the water use monitoring structure from freezing in cold areas, thereby affecting the rescue efficiency.

[0027] (7) The water use monitoring method for the underground fire hydrant provided by the application further comprises a central processing module and an abnormal alarm module and a positioning module, the central processing module can determine the operation state of the fire hydrant according to the pressure data and the water flow data, the abnormal alarm module can alarm when the water of the fire hydrant is abnormal, so that the fire hydrant can be timely excluded from faults and the fire safety can be ensured.

[0028] (8) The underground fire hydrant in the north generally has two water outlets, the water use monitoring method for the underground fire hydrant provided by the application only sets the water use and pressure monitoring device on one water outlet of the fire hydrant, so that the flow of all water outlets of the fire hydrant can be monitored, the monitoring water meter does not need to be set at all water outlets of the fire hydrant, the cost can be saved, and the updating efficiency of the intelligent fire hydrant can be improved.

[0029] (9) The underground fire hydrant in the north generally has two water outlets, the water use monitoring method for the underground fire hydrant provided by the application only sets the water use and pressure monitoring device on one water outlet of the fire hydrant, so that the state of all water outlets of the fire hydrant can be monitored, the monitoring water meter does not need to be set at all water outlets of the fire hydrant, the cost can be saved, and the updating efficiency of the intelligent fire hydrant can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a structural view of the underground fire hydrant;

[0031] Figure 2 is a schematic view of the underground fire hydrant provided with the water use monitoring structure arranged in the underground well;

[0032] Figure 3 is an axonometric view of the underground fire hydrant provided with the water use monitoring structure I;

[0033] Figure 4Front view of underground fire hydrant equipped with water monitoring structure I;

[0034] Figure 5 Front view of underground fire hydrant equipped with water monitoring structure I;

[0035] Figure 6 Axonometric view of underground fire hydrant equipped with water monitoring structure II;

[0036] Figure 7 Front view of underground fire hydrant equipped with water monitoring structure II;

[0037] Figure 8 Front view of underground fire hydrant equipped with water monitoring structure II;

[0038] Figure 9 Axonometric view of underground fire hydrant equipped with water monitoring structure III;

[0039] Figure 10 Front view of underground fire hydrant equipped with water monitoring structure III;

[0040] Figure 11 Front view of underground fire hydrant equipped with water monitoring structure III.

[0041] Wherein, 01-fire hydrant body, 02-dog joint, 03-closure, 04-valve, 05-water supply branch pipe, 06-outlet I, 07-outlet II;

[0042] 1-water monitoring structure I, 11-adaptor I, 12-electromagnetic water meter I, 13-dog adaptor I;

[0043] 2-water monitoring structure II, 21-adaptor II, 22-electromagnetic water meter II, 23-dog adaptor II, 24-clip I, 25-clip II;

[0044] 3-water monitoring structure III, 31-adaptor III, 32-electromagnetic water meter III, 33-dog adaptor III, 34-clip III, 35-clip IV;

[0045] 4-split antenna. DETAILED DESCRIPTION

[0046] The present application will be described in detail below with reference to the accompanying drawings and examples.

[0047] Example 1

[0048] This example provides a water monitoring structure for underground fire hydrant, installed at the outlet of underground fire hydrant; see attached Figures 1-3 , underground fire hydrant includes fire hydrant body 01, dog joint 02 and closure 03;

[0049] The bottom of the fire hydrant body 01 is connected with the water supply branch pipe 05 through the valve 04, and the top of the fire hydrant body 01 is provided with a water outlet I 06, and the dog clasp joint 02 is arranged at the water outlet I 06 of the fire hydrant body 01 and used for connecting the fire hose or other equipment; a screw thread is arranged in the dog clasp joint 02, and the blind cap 03 is threadedly connected with the dog clasp joint 02 when the underground fire hydrant is not used, so as to seal the water outlet I 06 of the underground fire hydrant.

[0050] The water monitoring structure comprises an adapter, an electromagnetic water meter and a dog clasp adapter.

[0051] One end of the adapter is fixedly connected with the water outlet I 06 of the fire hydrant body 01 in a coaxial manner, and the other end is fixedly connected with one end of the electromagnetic water meter in a coaxial manner; one end of the dog clasp adapter is fixedly connected with the electromagnetic water meter in a coaxial manner, and the other end is fixedly connected with the blind cap 03.

[0052] The electromagnetic water meter can monitor the pressure and water flow of the underground fire hydrant, acquire pressure data and water flow data of the water outlet I 06, and can transmit the pressure data and water flow data to the background comprehensive management system.

[0053] The water monitoring structure can be directly installed at the outlet of the existing underground fire hydrant, can monitor the pressure, flow and state of the underground fire hydrant, can quickly realize the monitoring of the water use of the underground fire hydrant, can improve the urban large-area updating efficiency of the intelligent fire hydrant, and can avoid the influence on the production and life of traffic.

[0054] In one embodiment, referring to the accompanying drawings, Figure 2 The electromagnetic water meter is provided with a communication module for communication between the electromagnetic water meter and the external background comprehensive management system, and the communication module further comprises a split antenna 4 arranged outside the electromagnetic water meter, the split antenna 4 extends upward from the bottom of the underground well and is fixedly arranged at the well mouth, so as to ensure the smoothness and reliability of the communication of the electromagnetic water meter.

[0055] In one embodiment, the electromagnetic water meter is provided with a positioning module, the positioning module collects positioning information data of the underground fire hydrant, and the electromagnetic water meter can transmit the positioning information data to the background comprehensive management system.

[0056] It should be noted that the electromagnetic water meter can be directly changed in structure on the basis of the electromagnetic water meter with pressure monitoring function, flow monitoring function and communication function on the market.

[0057] Working principle:

[0058] The water use monitoring structure is installed between the cap 03 and the hydrant body 01, the adapter at one end of the water use monitoring structure is connected with the water outlet I 06, the middle part is provided with an electromagnetic water meter, and the tooth buckle adapter at the other end is connected with the cap 03. The pressure and flow of the underground hydrant are monitored through the electromagnetic water meter, and the related data is transmitted to the background comprehensive management system.

[0059] The water use monitoring structure is convenient to install, can improve the large-area updating efficiency of the hydrant, and avoids the influence on traffic and other production and life.

[0060] Embodiment 2

[0061] This embodiment proposes a specific embodiment of a water use monitoring structure based on the embodiment 1, as shown in the figure, the water use monitoring structure is a water use monitoring structure I 1, the adapter is an adapter I 11, the electromagnetic water meter is an electromagnetic water meter I 12, and the tooth buckle adapter is a tooth buckle adapter I 13. Figures 3-5

[0062] One end of the adapter I 11 is provided with external threads and is threadedly connected with the tooth buckle joint 02 of the hydrant body 01, and the other end is provided with a flange; both ends of the electromagnetic water meter I 12 are provided with flanges; one end of the tooth buckle adapter I 13 is provided with a flange, and the other end is provided with internal threads and a tooth buckle.

[0063] The adapter I 11 is connected with one end of the electromagnetic water meter I 12 through the flange; the tooth buckle adapter I 13 is connected with the other end of the electromagnetic water meter I 12 through the flange; the cap 03 is threadedly connected with the tooth buckle adapter I 13; the tooth buckle on the tooth buckle adapter I 13 is used for connecting a fire hose or other equipment.

[0064] The water use monitoring structure provided in this embodiment can be directly assembled into the water use monitoring structure I 1, and then screwed into the hydrant body 01 by using the tooth buckle joint 02 of the underground hydrant, so that the installation efficiency of the water use monitoring structure is improved.

[0065] Embodiment 3

[0066] This embodiment proposes a specific embodiment of a water use monitoring structure based on the embodiment 1, as shown in the figure, the water use monitoring structure is a water use monitoring structure I 1, the adapter is an adapter I 11, the electromagnetic water meter is an electromagnetic water meter I 12, and the tooth buckle adapter is a tooth buckle adapter I 13. Figures 6-8

[0067] One end of the adapter I 11 is provided with external threads and is threadedly connected with the tooth buckle joint 02 of the hydrant body 01, and the other end is provided with a flange; both ends of the electromagnetic water meter I 12 are provided with flanges; one end of the tooth buckle adapter I 13 is provided with a flange, and the other end is provided with internal threads and a tooth buckle.

[0068] ​​The electromagnetic water meter 122 is provided with outward turned edges at both ends; the one end of the dog adapter 123 is provided with an outward turned edge, and the other end is provided with an internal thread and a dog;

[0069] The outward turned edge of the adapter 121 is coaxially opposite to the outward turned edge of one end of the electromagnetic water meter 122, and is fixedly connected through the clamp 124; the outward turned edge of the dog adapter 123 is coaxially opposite to the outward turned edge of the other end of the electromagnetic water meter 122, and is fixedly connected through the clamp 125; the plug cap 03 is threadedly connected with the dog adapter 123; the dog on the dog adapter 123 is used for connecting a fire hose or other equipment.

[0070] The water use monitoring structure provided in the embodiment can realize quick assembly of the water use monitoring structure 2, and further improve the installation efficiency of the water use monitoring structure.

[0071] Embodiment 4

[0072] The embodiment provides a specific embodiment of a water use monitoring structure based on the embodiment 1, as shown in the figure, the water use monitoring structure is a water use monitoring structure 3, the adapter is an adapter 3 1, the electromagnetic water meter is an electromagnetic water meter 3 2, and the dog adapter is a dog adapter 3 3; Figures 9-11

[0073] The adapter 3 1 is coaxially and fixedly arranged at the water outlet 106 of the fire hydrant main body 1 in place of the dog adapter 2, and the fixed arrangement can be welding or clamping;

[0074] The adapter 3 1 is coaxially and fixedly arranged at the water outlet 106 of the fire hydrant main body 1 in place of the dog adapter 2, and the fixed arrangement can be welding or clamping;

[0075] The outward turned edge of the adapter 3 1 is coaxially opposite to the outward turned edge of one end of the electromagnetic water meter 3 2, and is fixedly connected through the clamp 3 4; the outward turned edge of the dog adapter 3 3 is coaxially opposite to the outward turned edge of the other end of the electromagnetic water meter 3 2, and is fixedly connected through the clamp 4 5; the plug cap 3 is threadedly connected with the dog adapter 3 3; the dog on the dog adapter 3 3 is used for connecting a fire hose or other equipment.

[0076] The embodiment can maximize the size of the water use monitoring structure by using the adapter 3 1 to replace the dog adapter 2 on the underground fire hydrant, so as to prevent the water use monitoring structure from being too long, and to prevent water from freezing in the water use monitoring structure in cold areas, thereby affecting the rescue efficiency.

[0077] Embodiment 5 ​

[0078] The embodiment is based on any one of embodiments 1-4, and provides a water use monitoring method for underground fire hydrants, which is as follows:

[0079] The electromagnetic water meter further comprises a central processing module, a pressure acquisition module, a flow acquisition module, and an abnormality alarm module.

[0080] The pressure acquisition module, the flow acquisition module, the abnormality alarm module, the positioning module, and the communication module can respectively communicate with the central processing module.

[0081] The pressure acquisition module acquires the aforementioned pressure data of the water outlet I 106 and transmits the pressure data to the central processing module.

[0082] The flow acquisition module acquires the aforementioned water flow data of the water outlet I 106 flowing out of the underground fire hydrant, and transmits the water flow data to the central processing module.

[0083] The positioning module acquires the positioning information data of the underground fire hydrant and transmits the positioning information data to the central processing module.

[0084] The central processing module transmits the pressure data, the water flow data, and the positioning information data to the external background comprehensive management system through the communication module.

[0085] The central processing module further determines the operation state of the fire hydrant according to the pressure data and the water flow data, and when the operation state is normal, the central processing module transmits the normal operation state data to the external background comprehensive management system through the communication module; when the operation state is abnormal, the central processing module transmits a control signal to the abnormality alarm module, and the abnormality alarm module alarms; at the same time, the central processing module further transmits the abnormal operation state data to the external background comprehensive management system.

[0086] In the embodiment, the electromagnetic water meter further comprises a central processing module, an abnormality alarm module, and a positioning module, the central processing module can determine the operation state of the fire hydrant according to the pressure data and the water flow data, the abnormality alarm module can alarm when the water outlet of the fire hydrant is abnormal, and the positioning module can timely locate the position of the fire hydrant, so as to facilitate timely troubleshooting of the fire hydrant and ensure fire safety.

[0087] Further, the central processing module can further calculate the water flow data II of other water outlets (such as the water outlet II 107 in the attached Figure 1 The specific method is that the central processing module calculates the approximate water flow data II according to the initial pressure data value when the water outlet is opened, the pressure change value and change speed in the process until the flow is stable, and the pressure change duration, and transmits the water flow data II to the background comprehensive management system through the communication module.

[0088] Further, the central processing module can preset a model for establishing a correlation between pressure change and flow according to big data analysis, and calculate the outlet flow data II according to the model.

[0089] The water use and state monitoring method for the underground fire hydrant with two outlet ports in the north provided in this embodiment sets the water use and pressure monitoring device on only one outlet port of the fire hydrant, so that the flow monitoring of all outlet ports of the fire hydrant can be realized, a water meter does not need to be set at all outlet ports of the fire hydrant, cost can be saved, and the updating efficiency of the intelligent fire hydrant can be improved.

[0090] Further, the method for the central processing module to judge the running state of the fire hydrant according to the pressure data and the outlet flow data I is as follows:

[0091] The central processing module compares the received pressure data with a preset threshold value:

[0092] When the pressure data is not less than the threshold value and the outlet flow data is equal to zero, the central processing module judges that the running state of the fire hydrant is normal.

[0093] In addition to the period of normal use in the event of a fire, when the pressure data is less than the threshold value and the outlet flow data is greater than zero, the central processing module judges that the outlet port 106 is discharging water, and the central processing module judges that the running state of the fire hydrant is abnormal.

[0094] In addition to the period of normal use in the event of a fire, when the pressure data is less than the threshold value and the outlet flow data is equal to zero, other outlet ports on the fire hydrant may be discharging water, such as the outlet port 107 in FIG. Figure 1 , or a problem occurs in the water supply to the fire hydrant, at which time the central processing module judges that the running state of the fire hydrant is abnormal.

[0095] In this embodiment, the water use monitoring structure is set on only one outlet port of the fire hydrant, so that the state monitoring of all outlet ports of the fire hydrant can be realized, the water discharge state of the corresponding outlet port can be judged in a positive manner, whether other outlet ports are abnormal can also be judged, a water meter does not need to be set at all outlet ports of the fire hydrant, cost can be saved, and the updating efficiency of the intelligent fire hydrant can be improved.

[0096] To sum up, the above is only a preferred embodiment of the present application, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A water usage monitoring method for underground fire hydrants, based on a water usage monitoring structure for underground fire hydrants, wherein the underground fire hydrant includes a fire hydrant body, a threaded connector, and a cap; the fire hydrant body is provided with a water outlet I and a water outlet II; the threaded connector is provided at the water outlet I of the fire hydrant body, and the cap is threadedly connected to the threaded connector; the water usage monitoring structure includes an adapter, an electromagnetic water meter, and a threaded adapter. One end of the adapter is coaxially and fixedly connected to the outlet I of the fire hydrant body, and the other end is coaxially and fixedly connected to one end of the electromagnetic water meter; one end of the threaded adapter is coaxially and fixedly connected to the electromagnetic water meter, and the other end is fixedly connected to the end cap. The electromagnetic water meter can monitor the pressure and flow rate of underground fire hydrants and obtain the pressure data and flow rate data of outlet I. The electromagnetic water meter is equipped with a communication module, which is used for communication between the electromagnetic water meter and the external background integrated management system. Electromagnetic water meters can transmit pressure data and water flow rate data to the back-end integrated management system via a communication module; Its distinguishing feature is that the electromagnetic water meter is also equipped with a central processing module, a pressure acquisition module, a flow acquisition module, and an abnormal alarm module; The pressure acquisition module, flow acquisition module, abnormal alarm module, and communication module can all communicate with the central processing module separately; The pressure acquisition module collects the aforementioned pressure data from outlet I and transmits it to the central processing module; The flow acquisition module collects the aforementioned outflow flow data I from outlet I of the underground fire hydrant and transmits it to the central processing module; The central processing module transmits pressure data and effluent flow rate data I to the external back-end integrated management system via the communication module; The central processing module also determines the operating status of the fire hydrant based on pressure data and water flow rate data I; The central processing module calculates the water flow rate data II of the fire hydrant outlet II based on the initial pressure data and the pressure changes and rate of change during the process until the flow rate stabilizes, combined with the duration of pressure change. The water flow rate data II is then transmitted to the back-end integrated management system via the communication module. The central processing module can also preset a model to establish the correlation between pressure changes and flow rate based on big data analysis, and calculate the water flow rate data II based on this model. When the operation is normal, the central processing module transmits the normal operation status data to the external back-end integrated management system through the communication module; When the operation is abnormal, the central processing module sends a control signal to the abnormal alarm module, which then issues an alarm. At the same time, the central processing module also sends abnormal operation data to the external back-end integrated management system.

2. The water usage monitoring method for underground fire hydrants as described in claim 1, characterized in that, The central processing module determines the operating status of fire hydrants based on pressure data and water flow rate data I as follows: The central processing module compares the received pressure data with a preset threshold: When the pressure data is not less than the threshold and the outflow data I is equal to zero, the central processing module determines that the fire hydrant is operating normally. Outside of normal operating conditions during fires, when the pressure data is less than the threshold and the water flow rate data I is greater than zero, the central processing module determines that water is flowing from outlet I and that the fire hydrant's operating status is abnormal. Outside of normal operating conditions during fires, when the pressure data is below the threshold and the water flow rate data I is zero, the central processing module determines that the fire hydrant's operating status is abnormal.

Citation Information

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