CN115560832A - Check-up monitoring management system of water affair flow settlement appearance - Google Patents

Check-up monitoring management system of water affair flow settlement appearance Download PDF

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Publication number
CN115560832A
CN115560832A CN202210862417.3A CN202210862417A CN115560832A CN 115560832 A CN115560832 A CN 115560832A CN 202210862417 A CN202210862417 A CN 202210862417A CN 115560832 A CN115560832 A CN 115560832A
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China
Prior art keywords
flow
monitoring
portable
data
verification
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Pending
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CN202210862417.3A
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Chinese (zh)
Inventor
姚俊山
厉泽辉
胡旵
高志东
陈群山
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Hangzhou Wentuo Intelligent Technology Co ltd
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Hangzhou Wentuo Intelligent Technology Co ltd
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Priority to CN202210862417.3A priority Critical patent/CN115560832A/en
Publication of CN115560832A publication Critical patent/CN115560832A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F25/00Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
    • G01F25/10Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30Services specially adapted for particular environments, situations or purposes
    • H04W4/38Services specially adapted for particular environments, situations or purposes for collecting sensor information

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)

Abstract

The invention provides a check monitoring management system of a water affair flow settlement instrument, which comprises: the portable flow calibration units are distributed in the pipe network and used for monitoring the state of the flow settlement instrument; the portable flow verification unit is connected to the data server through a wireless signal; the portable flow verification unit comprises a portable verification terminal; the invention is used for monitoring the state of the flow settlement instrument through a plurality of portable checking terminals, counting and recording the flow monitoring data detected by the flow sensor through the flow metering unit, generating the flow monitoring information and sending the flow monitoring information to the data server, and the data server generates and displays the monitoring information in real time according to the monitoring signal, thereby avoiding the disassembly and assembly work of the on-site flowmeter to be checked, effectively reducing the working strength of the on-site flowmeter checking, avoiding the disassembly-free service of the flowmeter checking and solving the influence of the checking work on the enterprise production.

Description

Calibration monitoring management system of water affair flow settlement instrument
Technical Field
The invention relates to the technical field of water affair flow calibration, in particular to a calibration monitoring management system of a water affair flow settlement instrument.
Background
At present, the intelligent water affair system is rapidly developed, is continuously converted into a real product from a concept, and is increasingly and practically applied to the market. With the recent stricter national water resource management policy, the requirements on the utilization and supervision of water resources are higher and higher. In the water supply process of intelligent water affairs, in order to further improve the accuracy and the reliability of water resource supervision, the measurement unit in the water resource supervision link is supervised.
China discloses an authorized invention: an intelligent water management system (publication number: CN 111683147B) based on a block chain is characterized in that when a block chain server forwarding rate signal is lower than a received sensor data rate signal by 1.5V, a triode Q2 is conducted, a triode Q1 is conducted, the received sensor data rate signal and the forwarding rate signal enter a differential amplifier to perform subtraction operation, and the output is positive to indicate congestion, the triode Q4 is firstly triggered to conduct, a collector of the triode Q4 is at a low level, one path of the triode drives a relay K1 coil to be electrified, a buffer is accessed to temporarily store data received by a block chain database so as to relieve the problem of low throughput and congestion of the block chain database, the other path of the triode Q3 conducts, a rate signal buffered by the buffer is fed back to a differential amplifier, the differential amplifier outputs a difference value accessed to the buffer, and simultaneously triggers a thyristor VTL1 to conduct in a delayed manner, and when the voltage stabilization value is higher than a voltage stabilization value of a voltage stabilizing tube Z6, the differential amplifier outputs a signal after the rate regulation and couples with an original sampling pulse signal of the block chain database, and enters a voltage-controlled oscillator to generate sampling pulses, and further relieve the problem of congestion and packet loss.
However, the existing water management system has the following defects: firstly, the existing traditional water management system is old for the checking mode of various metering devices, and cannot realize the timely intercommunication of information, and various different detection modes require the disassembly and the reinstallation of complex online metering devices, so that the system is inconvenient to check quickly and conveniently, and the normal production of water consumption units is influenced.
The existing traditional water management system can not realize online monitoring on all verification data. Once various exceptions occur, the problem of delay lag exists in the check of the exception point;
therefore, a checking, monitoring and managing system of the water traffic flow calculating instrument is provided.
Disclosure of Invention
In view of this, the invention aims to provide a management system for water affair monitoring and checking equipment, which overcomes the defects in the prior art, integrates the detection mode of on-site quick checking, realizes the real-time online monitoring of the whole management network for the checking equipment, and provides a convenient and efficient informatization management platform for water affair management personnel;
another objective of the present invention is to provide a water affair monitoring, checking and managing system, which improves the adaptability of the water affair managing system, and can perform quick checking according to the requirements of different users in different scenes by adopting a modular functional design.
The technical scheme of the embodiment of the invention is realized as follows: a check monitoring management system of a water traffic flow settlement instrument comprises:
the portable flow calibration units are distributed in the pipe network and used for monitoring the state of the flow settlement instrument;
the portable flow verification unit is connected to the data server through a wireless signal;
the portable flow verification unit comprises a portable verification terminal, and the portable verification terminal comprises a flow metering unit and is used for counting and recording detected flow monitoring data, generating flow monitoring information and sending the flow monitoring information to the data server;
the data server generates monitoring information in real time according to the monitoring signals and displays the monitoring information;
the portable checking terminals are used for monitoring the state of the flow settlement instrument, flow monitoring data detected by the flow sensor are counted and recorded through the flow metering unit, flow monitoring information is generated and sent to the data server, the data server generates monitoring information in real time according to the monitoring signals and displays the monitoring information, the disassembly and installation work of a to-be-checked field flowmeter is avoided, the working strength of the field flowmeter checking is effectively reduced, the disassembly-free service of the flowmeter checking is realized, and the influence of the checking work on enterprise production is solved.
Further preferred is: the portable checking terminal also comprises a main control module, a flow acquisition module, a video acquisition module, a display module and a communication module;
the main control module is interactively connected with the flow acquisition module, the video acquisition module, the communication module and the display module;
the flow acquisition module comprises a flow sensor, and the flow sensor is used for detecting flow data;
the main control module comprises an interface unit which is coupled with other modules through a serial bus and used for comprehensively processing information fed back by the other modules;
the video acquisition module is used for acquiring field video information;
the communication module is used for transmitting a flow acquisition signal;
and the display module is used for displaying the flow information.
The portable checking terminals are used for monitoring the state of the flow settlement instrument, flow monitoring data detected by the flow sensor are counted and recorded through the flow metering unit, flow monitoring information is generated and sent to the data server, the data server generates monitoring information in real time according to the monitoring signals and displays the monitoring information, the disassembly and installation work of a to-be-checked field flowmeter is avoided, the working strength of the field flowmeter checking is effectively reduced, the disassembly-free service of the flowmeter checking is realized, and the influence of the checking work on enterprise production is solved.
Further preferably: the flow monitoring information comprises the instantaneous flow and the accumulated flow of water in the pipe network.
Further preferably: the portable verification terminal also comprises a battery module;
and the battery module is used for supplying power to the portable checking terminal.
Further preferred is: the flow information collected by the portable flow verification unit is sent to a data gateway in the data server through a 4G signal, and is displayed through the display module after data analysis and data storage.
In order to solve the above technical problem, another technical solution adopted by the present application is: the monitoring management method of the checking monitoring management system of the water traffic flow calculator comprises the following steps:
starting a system, and initializing the system;
the 4G network is linked and flow meter data is collected.
Further preferred is: and after the 4G network link fails and is delayed for a period of time, the 4G network is re-linked until the 4G network link succeeds.
Further preferred is: the delay time is 3-15s.
Further preferred is: and after the flowmeter data acquisition is successful, processing the data through the flow verification terminal, displaying the data, circularly timing to be successful, and then packaging and sending the data to the data server.
In order to solve the above technical problem, the present application adopts another technical solution: there is provided a computer device comprising a processor, a memory coupled to the processor, and program instructions stored in the memory, which when executed by the processor, cause the processor to perform the flow monitoring step of the verification monitoring management system of the water traffic flow calculating instrument as described above, the processor may also be referred to as a Central Processing Unit (CPU). The processor may be an integrated circuit chip having signal processing capabilities. The processor may also be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
In order to solve the above technical problem, the present application adopts another technical solution that: there is provided a storage medium storing a flow monitoring step of a verification monitoring management system capable of implementing the water service flow calculator, wherein the program instructions may be stored in the storage medium in the form of a software product, and include several instructions to enable a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a portable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, or a computer device such as a computer, a server, a mobile phone, or a tablet. The server may be an independent server, or may be a cloud server that provides basic cloud computing services such as a cloud service, a cloud database, cloud computing, a cloud function, cloud storage, a web service, cloud communication, a middleware service, a domain name service, a security service, a Content Delivery Network (CDN), and a big data and artificial intelligence platform. .
Due to the adoption of the technical scheme, the embodiment of the invention has the following advantages:
1. the portable calibration terminals are used for monitoring the state of the flow settlement instrument, flow monitoring data detected by the flow sensor are counted and recorded through the flow metering unit, flow monitoring information is generated and sent to the data server, the data server generates and displays the monitoring information in real time according to the monitoring signals, the disassembly and assembly work of a to-be-calibrated field flowmeter is avoided, the work intensity of calibration of the field flowmeter is effectively reduced, the disassembly-free service of the flowmeter calibration solves the influence of the calibration work on enterprise production;
2. the working conditions of the inspection environment and the production environment are unified, and the accuracy of flow data is facilitated;
3. the inspection data is uniformly recorded by the platform, so that the traceability of the data is increased;
4. the production of enterprises is stabilized, the management of the equipment is facilitated, and the management and the setting of the life cycle of the equipment are enhanced.
The foregoing summary is provided for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will be readily apparent by reference to the drawings and following detailed description.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments or technical descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a system block diagram of a portable verification terminal according to the present invention;
FIG. 2 is a flow chart illustrating the flow verification of the present invention;
fig. 3 is a schematic flow chart of a monitoring management method of the verification monitoring management system of the water traffic flow calculator according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The term "plurality" in this application means at least two, e.g., two, three, etc., unless specifically limited otherwise. In the embodiment of the present application, all directional indicators (such as up, down, left, right, front, rear \8230;) are used only to explain the relative positional relationship between the components, the motion situation, etc. at a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
As shown in fig. 1 to 3, an embodiment of the present invention provides a calibration monitoring management system for a water service flow calculator, including:
the portable flow calibration units are distributed in the pipe network and used for monitoring the state of the flow settlement instrument;
the portable flow calibration unit is connected with the data server through a wireless signal;
the portable flow verification unit comprises a portable verification terminal, and the portable verification terminal comprises a flow metering unit and is used for counting and recording detected flow monitoring data, generating flow monitoring information and sending the flow monitoring information to the data server;
the data server generates monitoring information in real time according to the monitoring signals and displays the monitoring information, so that the disassembly and assembly work of the field flowmeter to be verified is avoided, the work intensity of the verification of the field flowmeter is effectively reduced, the disassembly-free service of the flowmeter verification is realized, and the influence of the verification work on enterprise production is avoided.
In this embodiment, specifically, referring to fig. 1, the portable calibration terminal further includes a main control module, a traffic collection module, a video collection module, a display module, and a communication module;
the main control module is interactively connected with the flow acquisition module, the video acquisition module, the communication module and the display module;
the flow acquisition module comprises a flow sensor, and the flow sensor is used for detecting flow data;
the main control module comprises an interface unit which is coupled with other modules through a serial bus and used for comprehensively processing information fed back by the other modules;
the video acquisition module is used for acquiring field video information;
the communication module is used for transmitting the flow acquisition signal, carries a 4G signal and transmits the signal, and can also transmit the wireless signal through a local area network, bluetooth, 5G and 3G network signals;
the disassembly and assembly work of the field flowmeter to be verified is avoided, the work intensity of the field flowmeter verification is effectively reduced, the disassembly-free service of the flowmeter verification solves the influence of the verification work on enterprise production;
the display module is used for displaying the flow information and comprises a display screen.
In this embodiment, specifically: the flow monitoring information comprises the instantaneous flow and the accumulated flow of water in the pipe network.
In this embodiment, specifically: the portable verification terminal also comprises a battery module;
and the battery module is used for supplying power to the portable checking terminal.
In this embodiment, specifically: as shown in fig. 2, the flow information collected by the portable flow verification unit is sent to a data gateway in the data server through a 4G signal, and is displayed through a display module after data analysis and data storage.
In order to solve the technical problem, the other technical scheme adopted by the application is as follows: a monitoring management method of a calibration monitoring management system of a water traffic flow settlement instrument is provided, as shown in fig. 3, including the following steps:
starting a system, and initializing the system;
the 4G network is linked and flow meter data is collected.
In this embodiment, specifically: and after the 4G network link fails and is delayed for a period of time, the 4G network is re-linked until the 4G network link succeeds.
The delay time is 3-15s.
After the flowmeter data is successfully acquired, the data is processed through a flow verification terminal, the data is displayed, and the data is packaged and sent to a data server after the data is successfully acquired in a circulating timing mode;
the disassembly and assembly work of the field flowmeter to be verified is avoided, the work intensity of the field flowmeter verification is effectively reduced, the disassembly-free service of the flowmeter verification solves the problem of the influence of the verification work on enterprise production.
In order to solve the above technical problem, the present application adopts another technical solution: there is provided a computer device comprising a processor, a memory coupled to the processor, and program instructions stored in the memory, which when executed by the processor, cause the processor to perform the flow monitoring step of the verification monitoring management system of the water traffic flow calculating instrument as described above, the processor may also be referred to as a Central Processing Unit (CPU). The processor may be an integrated circuit chip having signal processing capabilities. The processor may also be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
In order to solve the above technical problem, the present application adopts another technical solution: there is provided a storage medium storing the flow monitoring step of the verification monitoring management system capable of implementing the water service flow settlement meter as described above, wherein the program instructions may be stored in the storage medium in the form of a software product, and include several instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a portable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, or a computer device such as a computer, a server, a mobile phone, or a tablet. The server may be an independent server, or may be a cloud server that provides basic cloud computing services such as a cloud service, a cloud database, cloud computing, a cloud function, cloud storage, a web service, cloud communication, a middleware service, a domain name service, a security service, a Content Delivery Network (CDN), and a big data and artificial intelligence platform.
It should be noted that, in this specification, each embodiment is described in a progressive manner, and each embodiment focuses on differences from other embodiments, and portions that are the same as and similar to each other in each embodiment may be referred to. For the system-class embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The invention is in operation: the portable checking terminals are used for monitoring the state of the flow settlement instrument, counting and recording flow monitoring data detected by the flow sensor through the flow metering unit, generating flow monitoring information and sending the flow monitoring information to the data server, and the data server generates and displays the monitoring information in real time according to the monitoring signals, so that the disassembling and assembling work of a to-be-checked field flowmeter is avoided, the working strength of the field flowmeter checking is effectively reduced, the disassembling-free service of the flowmeter checking is realized, and the influence of the checking work on enterprise production is avoided;
by adopting the system, the working conditions of the inspection environment and the production environment are unified, the accuracy of flow data is more facilitated, the inspection data is uniformly recorded by the platform, the traceability of the data is increased, the production of enterprises is stabilized, the management of equipment is facilitated, and the management and the setting of the life cycle of the equipment are enhanced.
In the several embodiments provided in the present application, it should be understood that the disclosed terminal, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is only a logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit. The above are only embodiments of the present application, and not intended to limit the scope of the present application, and all equivalent structures or equivalent processes performed by the present application and the contents of the attached drawings, which are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims (10)

1. A check monitoring management system of a water traffic flow settlement instrument is characterized by comprising:
the portable flow calibration units are distributed in the pipe network and used for monitoring the state of the flow settlement instrument;
the portable flow calibration unit is connected with the data server through a wireless signal;
the portable flow calibration unit comprises a portable calibration terminal, the portable calibration terminal comprises a flow metering unit and is used for counting and recording the detected flow monitoring data, generating flow monitoring information and sending the flow monitoring information to the data server;
the flow monitoring information comprises the instantaneous flow and the accumulated flow of water in the pipe network;
and the data server generates monitoring information in real time according to the monitoring signals and displays the monitoring information.
2. The system for checking, monitoring and managing the water service flow calculator according to claim 1, wherein the system comprises: the portable checking terminal also comprises a main control module, a flow acquisition module, a video acquisition module, a display module and a communication module;
the main control module is interactively connected with the flow acquisition module, the video acquisition module, the communication module and the display module;
the flow acquisition module comprises a flow sensor, and the flow sensor is used for detecting flow data;
the main control module comprises an interface unit which is coupled with other modules through a serial bus and used for comprehensively processing information fed back by the other modules;
the video acquisition module is used for acquiring field video information;
the communication module is used for transmitting a flow acquisition signal;
and the display module is used for displaying the flow information.
3. The system for verifying, monitoring and managing a water service flow settlement instrument according to claim 1, wherein: the portable verification terminal also comprises a battery module;
and the battery module is used for supplying power to the portable checking terminal.
4. The system for checking, monitoring and managing the water service flow calculator according to claim 1, wherein the system comprises: the flow information collected by the portable flow verification unit is sent to a data gateway in the data server through a 4G signal, and is displayed through the display module after data analysis and data storage.
5. A monitoring management method of a verification monitoring management system of a water traffic flow settlement instrument according to any one of claims 1 to 4, characterized by comprising the following steps:
starting a system, and initializing the system;
the 4G network is linked and flow meter data is collected.
6. The monitoring management method of the verification monitoring management system of the water traffic flow calculator according to claim 5, wherein: and after the 4G network link is failed and is delayed for a period of time, the 4G network is re-linked until the 4G network link is successful.
7. The monitoring management method of the verification monitoring management system of the water traffic flow calculator according to claim 6, wherein: the delay time is 3-15s.
8. The monitoring management method of the verification monitoring management system of the water traffic flow calculator according to claim 5, wherein: and after the flowmeter data acquisition is successful, the data is processed through the flow verification terminal, the data is displayed, and the data is packaged and sent to the data server after the circulation timing is successful.
9. A computer device comprising a processor, a memory coupled to the processor, the memory having stored therein program instructions that, when executed by the processor, cause the processor to perform the flow monitoring steps of the verification monitoring management system of a water services flow calculator as claimed in any one of claims 1 to 4.
10. A storage medium storing a flow monitoring step of a verification monitoring management system capable of implementing the water traffic flow totalizer of any one of claims 1-4.
CN202210862417.3A 2022-07-20 2022-07-20 Check-up monitoring management system of water affair flow settlement appearance Pending CN115560832A (en)

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Application Number Priority Date Filing Date Title
CN202210862417.3A CN115560832A (en) 2022-07-20 2022-07-20 Check-up monitoring management system of water affair flow settlement appearance

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Application Number Priority Date Filing Date Title
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018184165A1 (en) * 2017-04-06 2018-10-11 邹霞 Distributed cloud service system for flow totalization
CN108981803A (en) * 2018-07-02 2018-12-11 宁波水表股份有限公司 A kind of water utilities monitoring management system
CN111683147A (en) * 2020-06-09 2020-09-18 张立 Intelligent water affair management system based on block chain
CN112539792A (en) * 2020-12-03 2021-03-23 江苏禹高物联科技有限公司 Monitoring method and system of intelligent water meter
CN213423753U (en) * 2020-12-08 2021-06-11 郑州力通水务有限公司 Big platform of wisdom water affairs management data
CN215930978U (en) * 2021-02-24 2022-03-01 贵州大学 Intelligent remote water amount monitoring system based on NB-IoT

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018184165A1 (en) * 2017-04-06 2018-10-11 邹霞 Distributed cloud service system for flow totalization
CN108981803A (en) * 2018-07-02 2018-12-11 宁波水表股份有限公司 A kind of water utilities monitoring management system
CN111683147A (en) * 2020-06-09 2020-09-18 张立 Intelligent water affair management system based on block chain
CN112539792A (en) * 2020-12-03 2021-03-23 江苏禹高物联科技有限公司 Monitoring method and system of intelligent water meter
CN213423753U (en) * 2020-12-08 2021-06-11 郑州力通水务有限公司 Big platform of wisdom water affairs management data
CN215930978U (en) * 2021-02-24 2022-03-01 贵州大学 Intelligent remote water amount monitoring system based on NB-IoT

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