CN110965590A - Novel city blowdown pipe network monitoring system and intelligent well lid thereof - Google Patents
Novel city blowdown pipe network monitoring system and intelligent well lid thereof Download PDFInfo
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- CN110965590A CN110965590A CN201911333688.4A CN201911333688A CN110965590A CN 110965590 A CN110965590 A CN 110965590A CN 201911333688 A CN201911333688 A CN 201911333688A CN 110965590 A CN110965590 A CN 110965590A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
- E02D29/1481—Security devices, e.g. indicating unauthorised opening
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Sewage (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention relates to the technical field of urban sewage disposal equipment, in particular to a novel urban sewage disposal pipe network monitoring system which comprises a microcontroller, a well lid loss prevention module, a sensor module, a flammable and explosive gas detection module, a wireless communication module and a main control platform, wherein the sensor module is used for detecting flammable and explosive gases; the manhole cover loss prevention module, the sensor module and the flammable and explosive gas detection module are connected with corresponding ports on the microcontroller through wires, and the wireless communication module is in wireless communication connection with the microcontroller and the master control platform; the intelligent well cover equipped by the monitoring system comprises an anti-falling well cover, a mounting bracket and a glass fiber reinforced plastic waterproof cover; the lower end face of the anti-falling well cover is provided with a mounting bracket, a glass fiber reinforced plastic waterproof cover is fixed in the mounting bracket, and a mounting groove is formed in the glass fiber reinforced plastic waterproof cover; and a binding post is arranged in the mounting groove, and the mounting groove is internally fixed with an electronic component and a connecting wire which are possessed by the novel urban sewage pipe network monitoring system.
Description
Technical Field
The invention relates to the technical field of urban sewage discharge equipment, in particular to a novel urban sewage discharge pipe network monitoring system and an intelligent well lid thereof.
Background
The current manual treatment method is characterized in that the current manual treatment method is that the period is too long from discovery to renovation, and the sewer is not treated in time, dangerous situations occur, and a sewer pipeline is buried underground all the year round, so that a plurality of blind spots exist, the blockage precursors can not be monitored actually, if an electronic eye can be arranged on the underground sewer pipeline network system with strong concealment, a set of urban drainage network monitoring system can be built, the water level and the flow rate of the sewer can be monitored automatically in real time, and once the alarm value is exceeded, the urban sewer pipeline monitoring system can report an alarm to a platform in a certain mode, so that the dynamic operation condition of the sewer network can be observed and browsed remotely, and related alarm personnel can be treated on site at the first time, therefore, the operation and maintenance efficiency is greatly improved, the management of the urban sewage pipe network is actively played, dangerous situations are reduced to a certain extent, and the loss of lives and properties of people is avoided.
Along with the development of the internet of things, the urban sewage pipe network monitoring system becomes a part of smart city construction, in the field of industrial automation, the monitoring blind spot of the underground sewage pipe network is often faced, the manual routing inspection efficiency is low, the response timeliness is poor, how to be intelligent is realized, and the real-time automatic monitoring of the underground pipe network is very important. Therefore, it is necessary to develop a novel monitoring system for urban sewage pipe network.
The existing underground detection equipment is mostly provided with box-type equipment in an inspection well, personnel needs to be arranged for operation of going into the well for daily maintenance and overhaul, if the underground water level rises, the whole equipment is soaked in water, and the normal use performance of the equipment is affected due to poor waterproof performance of part of equipment and interfaces; and the inspection shaft lid of daily application in the drainage is mostly reinforced concrete well lid, cast iron well lid and polymer composite material well lid, and the reinforced concrete well lid is all used on municipal administration inspection shaft. Wherein the reinforced concrete well cover is made by wrapping steel frame with high-grade cement or wrapping steel frame with steel fiber cement. The steel plate has the advantages of high rigidity, high brittleness, easy aging, easy fracture and insufficient bearing capacity. The well lid and the cover seat are not tightly combined, and a rubber ring is usually additionally arranged between the well lid and the cover seat, but the rubber ring is easy to age, wear and drop, and is easy to bounce and damage when a vehicle runs. In daily application, certain potential safety hazards of well cover loss exist.
Disclosure of Invention
The invention aims to provide a novel urban sewage pipe network monitoring system and an intelligent well lid thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a novel urban sewage pipe network monitoring system comprises a microcontroller, a well lid loss prevention module, a sensor module, a flammable and explosive gas detection module, a wireless communication module and a main control platform; the manhole cover loss prevention module, the sensor module and the flammable and explosive gas detection module are connected with corresponding ports on the microcontroller through wires, and the wireless communication module is in wireless communication connection with the microcontroller and the master control platform;
the microcontroller is provided with an RTC clock module and an AD conversion module, and is used for processing and packaging the received sensor signal and the well lid abnormal movement signal and sending the processed sensor signal and the well lid abnormal movement signal to the master control platform through the wireless communication module;
the well lid loss prevention module is used for well lid movement alarm;
the sensor module comprises a flammable and explosive gas detection module, a floater liquid level meter, a pipeline pressure detection module and an ultrasonic flowmeter and is used for acquiring pressure data of a pipeline, content of dangerous gas, sewer wellhead liquid level and flow rate data of pipeline afternoon nap;
wherein the flammable and explosive gas detection module comprises a CH4 sensor, a CO sensor, and a H2S sensor;
the main control platform is used for realizing remote configuration of terminal sampling intervals, sending intervals, alarm thresholds and the like and information vertical management and control of real-time inquiry, alarm pushing, curve analysis, fault positioning and the like.
Preferably, the microcontroller adopts a low-power-consumption and high-performance 16-bit MSP430F 5438A.
Preferably, the wireless communication module adopts a 4G wireless transmission module and adopts a full network communication network system for carrying out remote communication with the main control platform.
Preferably, the module for preventing the well lid from being lost comprises a transaction switch, and the transaction switch is connected with a corresponding port of the microcontroller through a lead.
Preferably, the flammable and explosive gas detection module comprises a CO sensor, an H2S sensor and a CH4 sensor, the CO sensor, the H2S sensor and the CH4 sensor are all mounted at the top of the sewer pipe and are respectively connected with corresponding ports of the microcontroller through wires, and the monitoring terminal uploads data such as the concentration of the hazardous source gas and the terminal running state information to the main control platform through the wireless communication module at certain time intervals.
The invention also provides an intelligent well cover equipped in the novel urban sewage pipe network monitoring system, which comprises an anti-falling well cover, a mounting bracket and a glass fiber reinforced plastic waterproof cover; the lower end face of the anti-falling well cover is provided with a mounting bracket, a glass fiber reinforced plastic waterproof cover is fixed in the mounting bracket, and a mounting groove is formed in the glass fiber reinforced plastic waterproof cover; and a binding post is arranged in the mounting groove, and the mounting groove is internally fixed with an electronic component and a connecting wire which are possessed by the novel urban sewage pipe network monitoring system.
Preferably, the installing support vertical fixation is in preventing weighing down well lid lower extreme terminal surface department, and the installing support top is provided with the connection paster, connects the paster and fixes terminal surface under weighing down the well lid through fixing bolt, and installing support and connection paster adopt 316 stainless steel material to make.
Preferably, the glass fiber reinforced plastic waterproof cover is of a closed tetrahedral structure, and a plurality of uniformly distributed through holes are formed in the upper end face of the anti-falling well cover.
Preferably, waterproof sealing rings capable of being reliably compressed are arranged between the glass fiber reinforced plastic waterproof cover and the mounting support and between the glass fiber reinforced plastic waterproof cover and the anti-falling well lid, and the waterproof protection grade reaches IP 68.
Compared with the prior art, the invention has the beneficial effects that: the novel urban sewage pipe network monitoring system provided by the invention is an indispensable part for the construction of a smart city, detects well lid loss prevention, flammable and explosive gases, pressure, flow rate, water level and the like, is matched with the data processing of a microcontroller, and uploads a main control platform through a wireless communication module, so that the dynamic information of a underground water channel is comprehensively mastered from a brand new visual angle, the municipal management efficiency is improved, dangerous cases are eliminated, and one hand of data is provided for the monitoring of a sewage pipe network of the smart city; the intelligent well lid that is equipped with can prevent that pedestrian from weighing down the well and the vehicle from sinking into when the inspection shaft lid is damaged or shift, and the daily maintenance of a whole set of monitoring facilities only needs to prevent weighing down the well lid and take out the back and just can go on the road surface (need not the operation of going into the pit) and reduce the maintenance cost of equipment, and a whole set of monitoring facilities can effectively prevent that water from drenching and soak the reliability and the life that have improved equipment.
Drawings
FIG. 1 is a schematic flow diagram of the system of the present invention;
fig. 2 is a schematic view of the structure of the intelligent well lid of the present invention.
In the figure: 1. a microcontroller; 11. an RTC clock module; 12. an AD conversion module; 2. a module for preventing the well lid from being lost; 3. a sensor module; 31. a flammable and explosive gas detection module; 311. a CH4 sensor; 312. a CO sensor; 313. an H2S sensor; 32. a float level gauge; 33. a pipeline pressure detection module; 34. an ultrasonic flow meter; 4. a wireless communication module; 5. a master control platform; 6. the anti-falling well cover; 7. mounting a bracket; 8. a glass fiber reinforced plastic waterproof cover; 9. and (4) binding posts.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1-2, the present invention provides a technical solution: a novel urban sewage pipe network monitoring system and an intelligent well lid thereof comprise a microcontroller 1, a well lid loss prevention module 2, a sensor module 3, a flammable and explosive gas detection module 31, a wireless communication module 4 and a main control platform 5; the manhole cover loss prevention module 2, the sensor module 3 and the flammable and explosive gas detection module 31 are connected with corresponding ports on the microcontroller 1 through leads, and the wireless communication module 4 is in wireless communication connection with the microcontroller 1 and the main control platform 5;
the microcontroller 1 is provided with an RTC clock module 11 and an AD conversion module 12, and is used for processing and packaging the received sensor signal and the well lid abnormal movement signal and sending the processed sensor signal and the well lid abnormal movement signal to the main control platform 5 through a wireless communication module;
the well lid loss prevention module 2 is used for well lid movement alarm;
the sensor module 3 comprises a flammable and explosive gas detection module 31, a floater liquid level meter 32, a pipeline pressure detection module 33 and an ultrasonic flowmeter 34, and is used for acquiring pressure data of a pipeline, content of dangerous gas, liquid level of a sewer wellhead and flow rate data of pipeline afternoon nap;
wherein the flammable and explosive gas detection module 31 includes a CH4 sensor 311, a CO sensor 312, and a H2S sensor 313;
the main control platform 5 is used for realizing remote configuration of terminal sampling intervals, sending intervals, alarm thresholds and the like, and informatization vertical management and control of real-time query, alarm pushing, curve analysis, fault positioning and the like.
Further, the microcontroller 1 adopts a low-power-consumption and high-performance 16-bit MSP430F 5438A.
Further, the wireless communication module 4 adopts a 4G wireless transmission module and adopts a full network communication network system for performing remote communication with the main control platform 5.
Further, the module 2 for preventing the well lid from being lost comprises an abnormal switch, and the abnormal switch is connected with a corresponding port of the microcontroller 1 through a lead.
Further, the flammable and explosive gas detection module 31 includes a CH4 sensor 311, a CO sensor 312 and a H2S sensor 313, the CH4 sensor 311, the CO sensor 312 and the H2S sensor 313 are all installed at the top of the downcomer and are respectively connected with corresponding ports of the microcontroller 1 through wires, and the monitoring terminal uploads data such as the concentration of the hazardous source gas and the terminal operation state information to the main control platform 5 through the wireless communication module 4 at a certain time interval.
The invention also provides an intelligent well cover equipped in the novel urban sewage pipe network monitoring system, which comprises an anti-falling well cover 6, a mounting bracket 7 and a glass fiber reinforced plastic waterproof cover 8; the lower end face of the anti-falling well cover 6 is provided with a mounting bracket 7, a glass fiber reinforced plastic waterproof cover 8 is fixed in the mounting bracket 7, and a mounting groove is formed in the glass fiber reinforced plastic waterproof cover 8; and a binding post 9 is arranged in the mounting groove, and an electronic component and a connecting wire which are possessed by the novel urban sewage pipe network monitoring system are fixed in the mounting groove.
Further, installing support 7 vertical fixation is in preventing weighing down terminal surface department under the well lid 6, and installing support 7 top is provided with the connection paster, connects the paster and fixes at preventing weighing down terminal surface under the well lid 6 through fixing bolt, and installing support 7 and connection paster adopt 316 stainless steel material to make.
Further, the glass fiber reinforced plastic waterproof cover 8 is of a closed tetrahedron structure, and a plurality of through holes which are uniformly distributed are formed in the upper end face of the anti-falling well lid 6.
Furthermore, waterproof sealing rings which can be reliably compressed are arranged between the glass fiber reinforced plastic waterproof cover 8 and the mounting bracket 7 and between the glass fiber reinforced plastic waterproof cover and the anti-falling well lid 6, and the waterproof protection grade reaches IP 68.
The working principle is as follows: the manhole cover loss prevention module 2, the sensor module 3 and the flammable and explosive gas detection module 31 are connected with corresponding ports on the microcontroller 1 through leads, and the wireless communication module 4 is in wireless communication connection with the microcontroller 1 and the main control platform 5; the microcontroller 1 adopts 16 MSP430F5438A with low power consumption and high performance, and has extremely high requirements on a system due to complex and severe sewer environment, and low cost, low power consumption and feasibility are considered; the microcontroller 1 has a powerful 16-bit RISC CPU, using 16-bit registers and a constant number generator to obtain the highest coding efficiency, the Digitally Controlled Oscillator (DCO) can wake up from low power mode to active mode within 3.5 mus (typical value), comprising three 16-bit timers, a high performance 12-bit ADC, up to four USCI, a hardware multiplier, DMA, RTC module with alarm function and up to 87I/O pins (16 interrupt pins); the working temperature range is-40 to 85 ℃, so that the microcontroller 1 completely meets the environmental requirements of a sewer;
the wireless communication module 4 adopts a full-network-through (4G) network system, and because the urban underground water channel system is huge and complex, a wireless data transmission network platform is established through 4G, so that the trouble caused by the distance problem in wireless communication can be completely overcome, the 4G network system is based on the network frequency band of an operator, the transmission is stable and reliable, the transmission distance is long, the network system has the advantages of being 20dB higher than the existing network, the coverage area is wide, the capacity of supporting mass connection is realized, various deployment modes can be adopted, so that the monitoring system can carry out full-time-period monitoring at any time and any place, and the data of the whole platform is shared and transparent;
the manhole cover loss prevention module 2 comprises a transaction switch, the transaction switch is connected with a corresponding port of the microcontroller 1 through a wire, when the manhole cover is in a normal (closed) state, the transaction switch is pressed by the manhole cover and is not conducted, the microcontroller 1 detects that the current level is low, once the manhole cover is lost, the transaction switch is conducted, the microcontroller 1 detects that the current level is high, the current level is from low to high, the rising edge is triggered to be interrupted and an alarm is given, (once the transaction switch is conducted, the terminal automatically shortens the reporting frequency (reports the frequency to the main control platform at the frequency of 10 minutes)), the microcontroller 1 pushes alarm information to the main control platform 5 and municipal administration personnel through the wireless communication module 4, and the municipal administration personnel immediately sends related personnel to the site according to the alarm information to process, so that the personnel safety and property loss are avoided;
The daily maintenance of the whole set of equipment only needs to prevent falling and just can go on the road surface (need not the operation of going into the pit) after well lid 6 takes out, and all monitoring facilities in the pit use 8 back-offs of a glass steel buckler (in order to prevent that the water on well lid upper portion from drenching to the equipment, and utilize the gas pressure in the glass steel buckler 8 to prevent that equipment from soaking when the water level rises to exceed equipment in the pit), use installing support 7 and adapting unit fixed equipment that 316 stainless steel matter made in order to reduce this fixed system and receive the erosion of corrosive gas in the pit.
It is worth noting that: the whole device realizes control over the device through the master control button, and the device matched with the control button is common equipment, belongs to the existing mature technology, and is not repeated for the electrical connection relation and the specific circuit structure.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a novel city blowdown pipe network monitoring system which characterized in that: the manhole cover loss prevention system comprises a microcontroller (1), a manhole cover loss prevention module (2), a sensor module (3), a flammable and explosive gas detection module (31), a wireless communication module (4) and a main control platform (5); the manhole cover loss prevention module (2), the sensor module (3) and the flammable and explosive gas detection module (31) are connected with corresponding ports on the microcontroller (1) through leads, and the wireless communication module (4) is in wireless communication connection with the microcontroller (1) and the main control platform (5);
the microcontroller (1) is provided with an RTC clock module (11) and an AD conversion module (12) which are used for processing and packaging the received sensor signals and well lid abnormal movement signals and sending the processed signals to the main control platform (5) through the wireless communication module;
the well lid loss prevention module (2) is used for well lid movement alarm;
the sensor module (3) comprises a flammable and explosive gas detection module (31), a floater liquid level meter (32), a pipeline pressure detection module (33) and an ultrasonic flowmeter (34) and is used for acquiring pressure data of a pipeline, content of dangerous gas, sewer wellhead liquid level and flow rate data of pipeline afternoon nap;
wherein the flammable and explosive gas detection module (31) comprises a CH4 sensor (311), a CO sensor (312), and a H2S sensor (313);
the main control platform (5) is used for realizing remote configuration of terminal sampling intervals, sending intervals, alarm thresholds and the like and informatization vertical management and control of real-time inquiry, alarm pushing, curve analysis, fault positioning and the like.
2. The novel municipal sewage pipe network monitoring system according to claim 1, wherein: the microcontroller (1) adopts a 16-bit MSP430F5438A with low power consumption and high performance.
3. The novel municipal sewage pipe network monitoring system according to claim 1, wherein: the wireless communication module (4) adopts a 4G wireless transmission module and adopts a full network communication network system for carrying out remote communication with the main control platform (5).
4. The novel municipal sewage pipe network monitoring system according to claim 1, wherein: the module (2) for preventing the well lid from being lost comprises a transaction switch, and the transaction switch is connected with a corresponding port of the microcontroller (1) through a lead.
5. The novel municipal sewage pipe network monitoring system according to claim 1, wherein: the flammable and explosive gas detection module (31) comprises a CH4 sensor (311), a CO sensor (312) and an H2S sensor (313), the CH4 sensor (311), the CO sensor (312) and the H2S sensor (313) are all installed at the top of a sewer pipe and are respectively connected with corresponding ports of the microcontroller (1) through conducting wires, and the monitoring terminal uploads data such as dangerous source gas concentration and terminal running state information to the main control platform (5) through the wireless communication module (4) at a certain time interval.
6. The utility model provides a novel intelligent well lid that city sewage pipe network monitoring system equipped with which characterized in that: comprises an anti-falling well cover (6), a mounting bracket (7) and a glass fiber reinforced plastic waterproof cover (8); the lower end face of the anti-falling well lid (6) is provided with an installation support (7), a glass fiber reinforced plastic waterproof cover (8) is fixed in the installation support (7), and an installation groove is formed in the glass fiber reinforced plastic waterproof cover (8); and a binding post (9) is arranged in the mounting groove, and an electronic component and a connecting wire which are possessed by the novel urban sewage pipe network monitoring system are fixed in the mounting groove.
7. The intelligent well cover of the novel urban sewage pipe network monitoring system according to claim 6, wherein: installing support (7) vertical fixation is in preventing weighing down terminal surface department under well lid (6), and installing support (7) top is provided with the connection paster, connects the paster and fixes terminal surface under weighing down well lid (6) through fixing bolt, and installing support (7) and connection paster adopt 316 stainless steel material to make.
8. The intelligent well cover of the novel urban sewage pipe network monitoring system according to claim 6, wherein: the glass fiber reinforced plastic waterproof cover (8) is of a closed tetrahedral structure, and a plurality of uniformly distributed through holes are formed in the upper end face of the anti-falling well cover (6).
9. The intelligent well cover of the novel urban sewage pipe network monitoring system according to claim 6, wherein: the waterproof sealing ring which can be reliably compressed is arranged between the glass fiber reinforced plastic waterproof cover (8) and the mounting bracket (7) and between the glass fiber reinforced plastic waterproof cover and the anti-falling well lid (6), and the waterproof protection grade reaches IP 68.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911333688.4A CN110965590A (en) | 2019-12-23 | 2019-12-23 | Novel city blowdown pipe network monitoring system and intelligent well lid thereof |
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| CN201911333688.4A CN110965590A (en) | 2019-12-23 | 2019-12-23 | Novel city blowdown pipe network monitoring system and intelligent well lid thereof |
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| CN201911333688.4A Pending CN110965590A (en) | 2019-12-23 | 2019-12-23 | Novel city blowdown pipe network monitoring system and intelligent well lid thereof |
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| CN112681488A (en) * | 2020-12-23 | 2021-04-20 | 李璐 | Municipal sewage well structure with ponding detects alarm function |
| CN113756369A (en) * | 2021-11-09 | 2021-12-07 | 济南英华自动化技术有限公司 | Intelligent electronic well lid system |
| CN113957929A (en) * | 2021-11-03 | 2022-01-21 | 黑龙江大学 | Municipal pipe network intelligence well lid |
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| CN113756369B (en) * | 2021-11-09 | 2022-02-11 | 济南英华自动化技术有限公司 | Intelligent electronic well lid system |
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