CN107386422A - A kind of intelligent city water discharge method and system - Google Patents
A kind of intelligent city water discharge method and system Download PDFInfo
- Publication number
- CN107386422A CN107386422A CN201710487946.9A CN201710487946A CN107386422A CN 107386422 A CN107386422 A CN 107386422A CN 201710487946 A CN201710487946 A CN 201710487946A CN 107386422 A CN107386422 A CN 107386422A
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- Prior art keywords
- pumping plant
- drainage pumping
- ponding
- draining pump
- inflow
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Classifications
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/22—Adaptations of pumping plants for lifting sewage
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F2201/00—Details, devices or methods not otherwise provided for
- E03F2201/20—Measuring flow in sewer systems
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F2201/00—Details, devices or methods not otherwise provided for
- E03F2201/40—Means for indicating blockage in sewer systems
Abstract
The present invention relates to a kind of intelligent city water discharge method and system, the municipal drainage method includes：According to the inflow and displacement of each presumptive area drainage pumping plant collected, and pre-stored city total displacement limit value, determine to need the draining pump and its working condition of drainage pumping plant controlled in each presumptive area；According to the working condition of the draining pump for the drainage pumping plant for needing to control in each presumptive area, control instruction is determined；The draining pump for the drainage pumping plant for needing to control into each presumptive area sends the control instruction, to control the working condition of the draining pump for the drainage pumping plant for needing to control in each presumptive area.By controlling draining pump working condition to coordinate the displacement of each drainage pumping plant, city ponding is avoided to greatest extent.
Description
Technical field
The present invention relates to field of urban drainage, more particularly to a kind of intelligent city water discharge method and system.
Background technology
With the development of urban economy, urban size Rapid Expansion, while municipal drainage pressure is also gradually increased.Continuous
In the case that ground increases drainage pumping plant newly, the intellectuality of urban sewage drainage method how is improved, energy-saving and emission-reduction are just becoming increasingly
It is important.
The task of sewerage system planning is the sewage in whole city and rainwater is excreted out unobstructedly, handles dirt well
Water, reach the requirement of environmental protection.The main contents of planning include：Municipal drainage amount is estimated, selects sewer system, designs draining
Pipeline, determines position of sewage water treatment method and municipal sewage plant etc., and drainage system is the important foundation of modern city
Facility, how economic technology the drainage system in optimization design and reorganization and expansion city be an important research topic in municipal administration
Build with environmental improvement engineering construction, drainage system often occupies larger ratio between investments.How in various skills as defined in satisfaction
Sewerage system is rationally designed under the conditions of art, is an important topic in planning and designing, answers this China to put into effect city row
Water License Management method, it is intended to solve the generation of problems.
Said in terms of environmental protection, drainage system has protection and improves environment, eliminates the effect of sewage harm.And eliminate dirty
Dye, environmental protection, it is to carry out economic construction essential condition, is the major issue for ensureing people's health and the offspring that benefits future generations；
From health, the construction of drainage system is to ensureing that the health of the people has far-reaching significance；Economically, first, water is
Very valuable natural resources, it is all indispensable in all departments of national economy.Secondly, sewage is dealt carefully with,
And the timely exclusion of sleet water, it is one of necessary condition for ensureing industrial or agricultural normal operation.Meanwhile can waste water properly be located
Reason, the development to industrial production new technology also have a major impact；
At present, the sump of almost all of Urban Drainage Pumping Stations, power cycle grid sewage-removing machine and pernicious gas are taken out
Blower fan, its day-to-day operation are all to use opened manually or close down, and according to existing operational procedure, in order to ensure operator
The personal safety of member, power cycle grid sewage-removing machine and pernicious gas air exhauster synchronously must be run with draining pump machine.It is and existing
Urban groundwater drainage pipeline in some be old drainage pipeline, when there is long-time torrential rain, due to city
In each region drainage pipeline drainability it is different, there is the situation of large area ponding in the region that drainability can be caused poor.
And the timing of drain header road displacement one in city, if not carrying out coordination control to the displacement of region subtube, easily
Cause after needing the region of draining the situation of ponding occur.
Nineteen eighty-three according to Chinese 258 Urban Statisticals, is stood by the sewage per average daily amt of urban discharging pipeline discharge for 57,460,000
Square rice, wherein sanitary sewage are 1345 ten thousand steres, account for 23.4%.The size of sanitary sewage amount depends on domestic consumption.It is raw
Apply flexibly water in use, the overwhelming majority turns into sanitary sewage and discharged.Rainfall runoff is the same as local storm intensity, gathering ground
Product is relevant with the topographical features for producing runoff.Storm intensity depends on Designed recurrence period (repetition used by drainage pipeline designs
There is average life once).So the value of Designed recurrence period influences the techno-economic effect of engineering.Value is higher, design
Rainfall runoff it is big, construction investment will be increased.But the area of heavy losses can be caused in vital area or short-term ponding, if
Count weight current, preferably take high value.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of intelligent city water discharge method and system.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：A kind of intelligent city water discharge method, including it is following
Step：
S1, inflow and displacement according to each presumptive area drainage pumping plant collected, and pre-stored city are total
Displacement limit value, determine to need the draining pump and its working condition of drainage pumping plant controlled in each presumptive area；
S2, the working condition according to the draining pump of the drainage pumping plant for needing to control in each presumptive area, it is determined that control
Instruction；
S3, the draining pump for the drainage pumping plant for needing into each presumptive area to control send the control instruction, so as to
Control the working condition of the draining pump for the drainage pumping plant for needing to control in each presumptive area.
The beneficial effects of the invention are as follows：By gathering the inflow of drainage pumping plant and displacement and drainage pumping plant inflow most
Big value judges whether ponding occur, and is intake according to municipal drainage ability, ponding region inflow and displacement, non-ponding region
Amount and displacement determine how the working condition to the draining pump of drainage pumping plant, by controlling draining pump working condition to each row
The displacement of pump works is coordinated, and avoids city ponding to greatest extent.
Further, when the inflow of the drainage pumping plant keeps constant, and less than the pre-stored drainage pumping plant water inlet
When measuring maximum, judge that the inlet channel of drainage pumping plant blocks, and send warning information.
It is using the above-mentioned further beneficial effect of scheme：When the inflow of drainage pumping plant keeps constant, in positive reason
Under condition, it is possible to determine that the inflow of drainage pumping plant should be equal with pre-stored drainage pumping plant inflow maximum, but now if
When the inflow of drainage pumping plant is less than pre-stored drainage pumping plant inflow maximum, it can be determined that the inlet channel of drainage pumping plant
Sounding blocks, and sends alarm and reminding staff and is cleared up, avoids the ponding caused by blocking.
The present invention also provides a kind of intelligent city drainage system for realizing the above method, including：City Zhong Ge fates
Domain drainage pumping plant and drainage pumping plant water inlet, water outlet pipe network, in addition to：Each presumptive area drainage pumping plant water inlet pipe is installed on the net
Water inlet amount detecting device, the water outlet amount detecting device installed on the net of each presumptive area drainage pumping plant outlet pipe and long-range clothes
Business device platform；The remote server platform includes：Processing unit and transmitting element；
The water inlet amount detecting device, for detecting the inflow of each presumptive area drainage pumping plant and being sent to remote service
Device platform；
The water outlet amount detecting device, for detecting the water yield of each presumptive area drainage pumping plant and being sent to remote service
Platform；
The processing unit, for the inflow and displacement according to each presumptive area drainage pumping plant collected, and
Pre-stored city total displacement limit value, determine to need the draining pump of drainage pumping plant and its work controlled in each presumptive area
State；
The processing unit, it is additionally operable to the work of the draining pump according to the drainage pumping plant for needing to control in each presumptive area
Make state, determine control instruction；
The transmitting element, for described in the draining pump transmission for the drainage pumping plant for needing to control into each presumptive area
Control instruction, to control the working condition of the draining pump for the drainage pumping plant for needing to control in each presumptive area.
The beneficial effects of the invention are as follows：Water detection is installed on the water inlet pipe network and drainage pipeline networks of each area sewerage pumping plant
Device, and gather inflow and displacement and be sent to remote server platform in real time, remote server platform passes through municipal drainage
Main pipeline displacement limit and calculate each department inflow come analyze it is each it is regional answer displacement, pass through remote server platform
Control instruction is sent, the working condition of each area drain pumping drainage pump is controlled, avoids city ponding to greatest extent.
Further, the judging unit, specifically for keeping constant when the inflow of the drainage pumping plant, and less than described
During pre-stored drainage pumping plant inflow maximum, judge that the inlet channel of drainage pumping plant blocks, when entering for drainage pumping plant
When waterpipe blocks, warning information is sent by the warning device.
It is using the above-mentioned further beneficial effect of scheme：Judged by judging unit, when the water inlet of drainage pumping plant
When amount keeps constant, under normal circumstances, it is possible to determine that the inflow of drainage pumping plant should be with pre-stored drainage pumping plant inflow
Maximum is equal, but now if when the inflow of drainage pumping plant is less than pre-stored drainage pumping plant inflow maximum, can be with
Judge that the inlet channel sounding of drainage pumping plant blocks, send alarm and reminding staff and cleared up, avoided caused by blocking
Ponding.
Brief description of the drawings
Fig. 1 is a kind of intelligent city drainage system structural representation provided in an embodiment of the present invention；
Fig. 2 is the letter interacted in a kind of intelligent city drainage system provided in an embodiment of the present invention between each part
Make schematic flow sheet；
Fig. 3 is a kind of intelligent city water discharge method schematic flow sheet provided in an embodiment of the present invention；
Fig. 4 is a kind of intelligent city water discharge method schematic flow sheet one that another embodiment of the present invention provides；
Fig. 5 be another embodiment of the present invention provide a kind of intelligent city water discharge method schematic flow sheet secondly；
Fig. 6 be another embodiment of the present invention provide a kind of intelligent city water discharge method schematic flow sheet thirdly；
Fig. 7 be another embodiment of the present invention provide a kind of intelligent city water discharge method schematic flow sheet its four；
Fig. 8 is a kind of intelligent city drainage system structural representation that another embodiment of the present invention provides；
Fig. 9 is a kind of intelligent city drainage system structural representation one that another embodiment of the present invention provides；
Figure 10 be another embodiment of the present invention provide a kind of intelligent city drainage system structural representation secondly.
Embodiment
In describing below, in order to illustrate rather than in order to limit, it is proposed that such as particular system structure, interface, technology it
The detail of class, understand the present invention to cut thoroughly.However, it will be clear to one skilled in the art that there is no these specific
The present invention can also be realized in the other embodiments of details.In other situations, omit to well-known system, circuit and
The detailed description of method, in case unnecessary details hinders description of the invention.
Fig. 1 is a kind of intelligent city drainage system structural representation provided in an embodiment of the present invention, is comprised at least：City
In the water inlet of each presumptive area drainage pumping plant and drainage pumping plant, water outlet pipe network, in addition to：Each presumptive area drainage pumping plant water inlet
The water outlet amount detection device that water inlet amount detecting device, each presumptive area drainage pumping plant outlet pipe installed on pipe network are installed on the net
Put, remote server platform, access gateway of internet of things and Internet of Things gateway；The remote server platform includes：Place
Manage unit and transmitting element.
As shown in Fig. 2 Fig. 2 is the signaling flow interacted in the domestic safety prevention system provided by the invention between each part
Journey schematic diagram.
Specifically, in fig. 2,
Water inlet amount detecting device and water outlet amount detecting device are sent to access gateway of internet of things and Internet of Things gateway
Service access is asked, and can wherein be included in service access request：Water inlet amount detecting device and water outlet amount detecting device are installed
Drainage pumping plant region ID and service label authentication information etc., access gateway of internet of things service access request is sent to Internet of Things
In gateway, Internet of Things gateway is authenticated to service access request, when the authentication is successful, to access gateway of internet of things
The successful message of certification is sent, and network communication and transmission passage is established with access gateway of internet of things, access gateway of internet of things will be recognized
Successful message is demonstrate,proved to send to water inlet amount detecting device and water outlet amount detecting device.
Water inlet amount detecting device and water outlet amount detecting device are after the successful message of certification is received, to Internet of Things access network
Close and send the data that water inlet amount detecting device and water outlet amount detecting device are collected, access gateway of internet of things is taken by Internet of Things
The network communication and transmission passage that business gateway is established, the data that intake amount detecting device and water outlet amount detecting device are collected are sent out
Internet of Things gateway is delivered to, and Internet of Things gateway is then collected water inlet amount detecting device and water outlet amount detecting device
Data forwarding to remote server platform.
Remote server platform is collected by processing unit to water inlet amount detecting device and water outlet amount detecting device
Data, and pre-stored city total displacement limit value analysis, water inlet amount detecting device and water outlet amount detecting device are gathered
To data include：The inflow and displacement of each presumptive area drainage pumping plant, determine to need the row controlled in each presumptive area
The draining pump and its working condition of pump works, and sent by transmitting element to the draining pump of each presumptive area drainage pumping plant
Control instruction, to control the working condition of the draining pump of each presumptive area drainage pumping plant.
Fig. 3 is a kind of intelligent city water discharge method schematic flow sheet provided in an embodiment of the present invention.Specifically such as Fig. 3 institutes
Show, the intelligent city water discharge method includes：
S11, inflow and displacement according to each presumptive area drainage pumping plant collected, and pre-stored city are total
Displacement limit value, determine to need the draining pump and its working condition of drainage pumping plant controlled in each presumptive area；
Specifically, water inlet amount detecting device and the water outlet amount detecting device Internet of Things by being introduced in above-described embodiment respectively
The communication transmission passage established between access gateway and Internet of Things gateway, by water inlet amount detecting device and water outlet amount detection device
Put collected data and be sent to remote server platform, the water inlet amount detecting device and water outlet amount detecting device are gathered
To data include：The inflow and displacement of drainage pumping plant, can also include：Water inlet amount detecting device and water storage amount detection device
The numbering ID put；The numbering ID of water inlet amount detecting device and water outlet amount detecting device detects with water inlet amount detecting device and water yield
The drainage pumping plant region ID bindings that device is installed, remote server platform to water inlet amount detecting device and are gone out by processing unit
The inflow and displacement for each presumptive area drainage pumping plant that water amount detection device is collected, and pre-stored city are always arranged
Water limit value is analyzed, and the draining pump and its working condition for the drainage pumping plant for determining to need to control in each presumptive area are as worked as city
Regularly, pools zone and non-pools zone be present in each presumptive area, the discharge pressure of non-pools zone is less than in total displacement limit value one
The discharge pressure of pools zone, and city total displacement is equal to city total displacement limit value, does not reduce the row of non-pools zone now
Water, the displacement of pools zone can not be just improved, so that the ponding of pools zone is smoothly discharged.
S12, the working condition according to the draining pump of the drainage pumping plant for needing to control in each presumptive area, it is determined that control refers to
Order；
Specifically, generating corresponding control instruction to the draining pump of each drainage pumping plant for needing to control, referred to by control
Order controls the draining pump to enter different working conditions, improves the operating efficiency of system.
S13, the draining pump for the drainage pumping plant for needing into each presumptive area to control send the control instruction, so as to
Control the working condition of the draining pump for the drainage pumping plant for needing to control in each presumptive area.
Specifically, control instruction is sent to respectively by remote server platform by the transmitting element introduced in above-described embodiment
The draining pump of presumptive area drainage pumping plant, to control the working condition of the draining pump of each presumptive area drainage pumping plant.
In above-described embodiment, sentenced by the inflow for gathering drainage pumping plant with displacement and drainage pumping plant inflow maximum
It is disconnected ponding whether occur, and according to municipal drainage ability, ponding region inflow and displacement, non-ponding region inflow and row
Water determines how the working condition to the draining pump of drainage pumping plant, by controlling draining pump working condition to each drainage pumping plant
Displacement coordinated, avoid city ponding to greatest extent
Fig. 4 is a kind of intelligent city water discharge method schematic flow sheet one provided in an embodiment of the present invention.Specific such as Fig. 4
Shown, the intelligent city water discharge method includes：
S21, inflow and displacement according to each presumptive area drainage pumping plant collected, and pre-stored city are total
Displacement limit value, determine to need the draining pump and its working condition of drainage pumping plant controlled in each presumptive area；
Specifically, water inlet amount detecting device and the water outlet amount detecting device Internet of Things by being introduced in above-described embodiment respectively
The communication transmission passage established between access gateway and Internet of Things gateway, by water inlet amount detecting device and water outlet amount detection device
Put collected data and be sent to remote server platform, the water inlet amount detecting device and water outlet amount detecting device are gathered
To data include：The inflow and displacement of drainage pumping plant, can also include：Water inlet amount detecting device and water storage amount detection device
The numbering ID put；The numbering ID of water inlet amount detecting device and water outlet amount detecting device detects with water inlet amount detecting device and water yield
The drainage pumping plant region ID bindings that device is installed, remote server platform to water inlet amount detecting device and are gone out by processing unit
The inflow and displacement for each presumptive area drainage pumping plant that water amount detection device is collected, and pre-stored city are always arranged
Water limit value is analyzed, and the draining pump and its working condition for the drainage pumping plant for determining to need to control in each presumptive area are as worked as city
Regularly, pools zone and non-pools zone be present in each presumptive area, the discharge pressure of non-pools zone is less than in total displacement limit value one
The discharge pressure of pools zone, and city total displacement is equal to city total displacement limit value, does not reduce the row of non-pools zone now
Water, the displacement of pools zone can not be just improved, so that the ponding of pools zone is smoothly discharged,
Therefore, in the present embodiment, when judging the ponding situation of drainage pumping plant, arranged according to each presumptive area collected
The inflow and displacement of pump works, and pre-stored city total displacement limit value, determine to need to control in each presumptive area
The draining pump and its working condition of the drainage pumping plant of system, are specifically included：
S211, each presumptive area drainage pumping plant of collection inflow and displacement；
S212, inflow divided by displacement by drainage pumping plant, obtain the ponding rate of drainage pumping plant；
Specifically, it can only judge whether the drainage pumping plant region accumulates according to the inflow of drainage pumping plant and displacement
Water, inflow divided by displacement can be obtained the ponding rate in region residing for the drainage pumping plant, and the sizes values of ponding rate can have
The ponding situation in each region of determination of effect.
S213, pass through the inflow of the drainage pumping plant, displacement, ponding rate and city total displacement limit value determination need
The draining pump and its working condition for the drainage pumping plant to be controlled.
Specifically, ponding situation is determined whether by the inflow and displacement of drainage pumping plant, it is true according to ponding rate
The degree of constant volume water, determine that drainage pumping plant needs the water arranged by total displacement limit value and displacement, each area is obtained with this
The working condition of domain drainage pumping plant draining pump.
S22, the working condition according to the draining pump of the drainage pumping plant for needing to control in each presumptive area, it is determined that control refers to
Order；
Specifically, generating corresponding control instruction to the draining pump of each drainage pumping plant for needing to control, referred to by control
Order controls the draining pump to enter different working conditions, improves the operating efficiency of system.
S23, the draining pump for the drainage pumping plant for needing into each presumptive area to control send the control instruction, so as to
Control the working condition of the draining pump for the drainage pumping plant for needing to control in each presumptive area.
Specifically, control instruction is sent to respectively by remote server platform by the transmitting element introduced in above-described embodiment
The draining pump of presumptive area drainage pumping plant, to control the working condition of the draining pump of each presumptive area drainage pumping plant.
In above-described embodiment, by gathering the inflow and displacement of the drainage pumping plant of regional in city, to obtain
The ponding rate of the drainage pumping plant, as the displacement of drainage pumping plant is less than inflow, and inflow limits equal to drainage pumping plant inflow
Angle value, it is possible to determine that the region is in ponding state, and the ponding degree in the region can be effectively judged by ponding rate, according to
The ponding degree of regional is to reach the priority treatment in the region serious to ponding.
Fig. 5 be a kind of intelligent city water discharge method schematic flow sheet provided in an embodiment of the present invention secondly.Specific such as Fig. 5
Shown, the intelligent city water discharge method includes：
S31, inflow and displacement according to each presumptive area drainage pumping plant collected, and pre-stored city are total
Displacement limit value, determine to need the draining pump and its working condition of drainage pumping plant controlled in each presumptive area；
Specifically, water inlet amount detecting device and the water outlet amount detecting device Internet of Things by being introduced in above-described embodiment respectively
The communication transmission passage established between access gateway and Internet of Things gateway, by water inlet amount detecting device and water outlet amount detection device
Put collected data and be sent to remote server platform, the water inlet amount detecting device and water outlet amount detecting device are gathered
To data include：The inflow and displacement of drainage pumping plant, can also include：Water inlet amount detecting device and water storage amount detection device
The numbering ID put；The numbering ID of water inlet amount detecting device and water outlet amount detecting device detects with water inlet amount detecting device and water yield
The drainage pumping plant region ID bindings that device is installed, remote server platform to water inlet amount detecting device and are gone out by processing unit
The inflow and displacement for each presumptive area drainage pumping plant that water amount detection device is collected, and pre-stored city are always arranged
Water limit value is analyzed, and the draining pump and its working condition for the drainage pumping plant for determining to need to control in each presumptive area are as worked as city
Regularly, pools zone and non-pools zone be present in each presumptive area, the discharge pressure of non-pools zone is less than in total displacement limit value one
The discharge pressure of pools zone, and city total displacement is equal to city total displacement limit value, does not reduce the row of non-pools zone now
Water, the displacement of pools zone can not be just improved, so that the ponding of pools zone is smoothly discharged.
S32, the working condition according to the draining pump of the drainage pumping plant for needing to control in each presumptive area, it is determined that control refers to
Order；
Specifically, generating corresponding control instruction to the draining pump of each drainage pumping plant for needing to control, referred to by control
Order controls the draining pump to enter different working conditions, improves the operating efficiency of system.
S33, the draining pump for the drainage pumping plant for needing into each presumptive area to control send the control instruction, so as to
Control the working condition of the draining pump for the drainage pumping plant for needing to control in each presumptive area.
Specifically, control instruction is sent to respectively by remote server platform by the transmitting element introduced in above-described embodiment
The draining pump of presumptive area drainage pumping plant, to control the working condition of the draining pump of each presumptive area drainage pumping plant,
Wherein, also include before S31：
According to the inflow and displacement of each presumptive area drainage pumping plant collected, and pre-stored drainage pumping plant enters
Water maximum judges whether each presumptive area ponding occurs, wherein, the presumptive area for ponding occur is ponding region；Do not occur
The presumptive area of ponding is non-ponding region；
In S31, according to the inflow of the ponding region drainage pumping plant and displacement and the non-ponding region draining pump
The inflow and displacement stood, and the city total displacement limit value, determine to need what is controlled in each presumptive area
The draining pump and its working condition of drainage pumping plant, wherein, the working condition includes：The operating power of draining pump or draining pump
On off state；
In S32, the control instruction includes：
Improve the draining pump operating power of ponding region drainage pumping plant and/or open the ponding region row being closed
The draining pump of pump works is opened to improve the displacement of ponding region；
Reduce the draining pump operating power of non-ponding region drainage pumping plant and/or close the ponding region in opening
The draining pump of drainage pumping plant is to reduce the displacement of non-ponding region；
Wherein, the displacement summation of the displacement of ponding region and non-ponding region limits no more than the city total displacement
Angle value.
Specifically, judge whether each presumptive area ponding occurs by judging unit, as inflow is more than displacement, and enter
When water is equal to pre-stored drainage pumping plant inflow maximum, it may be determined that ponding occurs in the presumptive area, when inflow is small
When displacement, it may be determined that the presumptive area does not occur ponding；When city total displacement is equal to city total displacement limit value
When, improve the draining pump operating power of ponding region drainage pumping plant or open the draining pump of closing to improve the row of ponding region
Water, and reduce the draining pump operating power of non-ponding region drainage pumping plant or close the draining pump of unlatching to reduce non-ponding
The displacement in region；When city total displacement is less than city total displacement limit value, the row of ponding region drainage pumping plant is improved
Pump working power is opened the draining pump of closing to improve the displacement of ponding region, or reduces non-ponding region draining pump
The draining pump operating power stood closes the draining pump of unlatching to reduce the displacement of non-ponding region；Wherein, ponding region
Displacement and the displacement summation of non-ponding region be not more than the city total displacement limit value.
In S32, the control instruction also includes：
When the ponding rate of ponding region drainage pumping plant is equal to 1 and the inflow of drainage pumping plant is less than pre-stored drainage pumping plant
During inflow maximum, the draining pump operating power or stopping unlatching that no longer improve ponding region drainage pumping plant are closed
Draining pump；
Or when the ponding rate of non-ponding region drainage pumping plant is equal to 1, no longer reduce non-ponding region drainage pumping plant
Draining pump operating power or the draining pump that phase down is in opening.
Specifically, the value of the ponding rate by each area sewerage pumping plant, to determine the ponding situation of each area sewerage pumping plant,
When the ponding rate of ponding region drainage pumping plant is equal to 1 and the inflow of drainage pumping plant is less than pre-stored drainage pumping plant inflow most
During big value, it can be determined that ponding region no longer reduces the draining pump work of non-ponding region drainage pumping plant there is no ponding
Power closes the draining pump of unlatching.When the ponding rate of non-ponding region drainage pumping plant is equal to 1, it can be determined that non-pools zone
It is possible that ponding if domain reduces displacement again, therefore no longer reduce the draining pump work work(of non-ponding region drainage pumping plant
Rate closes the draining pump of unlatching.
In above-described embodiment, by judging the ponding situation in each region in city, when city total displacement reach the limitation value when,
Need the displacement for reducing non-ponding region drainage pumping plant to be improved with slot milling by the displacement of the drainage pumping plant of pools zone, reach
To reduce pools zone ponding situation, when when city, total displacement is not reaching to limit value, it is only necessary to improve ponding region draining
The displacement can of pumping plant reaches the problem of reduction pools zone ponding, the timing of total displacement limit value one in city, and city
Total displacement reach the limitation value when, if non-pools zone displacement does not reduce, the displacement of pools zone can not just rise, thus
When controlling the displacement of pools zone to rise, the displacement of non-pools zone is also reduced, but unconfined can not reduce non-product again
The displacement in pool and the unconfined displacement for improving pools zone, by the ponding rate of pools zone and non-pools zone, analysis is sentenced
The disconnected limit that should be controlled, avoiding exceeding limit value causes non-pools zone to become pools zone.
Fig. 6 be a kind of intelligent city water discharge method schematic flow sheet provided in an embodiment of the present invention thirdly.Specific such as Fig. 6
Shown, the intelligent city water discharge method includes：
S41, each presumptive area drainage pumping plant of collection inflow and displacement；
The inflow and pre-stored drainage pumping plant inflow for each presumptive area drainage pumping plant that S42, basis collect are most
Big value judges whether the inlet channel of drainage pumping plant blocks, and when the inlet channel of drainage pumping plant blocks, sends police
Notify breath.
Specifically, the inflow and displacement of the drainage pumping plant of each presumptive area are gathered, according to each fate collected
The inflow of domain drainage pumping plant and pre-stored drainage pumping plant inflow maximum judge whether the inlet channel of drainage pumping plant is sent out
It is raw to block, when the inlet channel of drainage pumping plant blocks, warning information is sent by alarm device.
Fig. 7 be a kind of intelligent city water discharge method schematic flow sheet provided in an embodiment of the present invention its four.Specific such as Fig. 7
Shown, the intelligent city water discharge method includes：
S51, each presumptive area drainage pumping plant of collection inflow and displacement；
The inflow and pre-stored drainage pumping plant inflow for each presumptive area drainage pumping plant that S52, basis collect are most
Big value judges whether the inlet channel of drainage pumping plant blocks, and when the inlet channel of drainage pumping plant blocks, sends police
Notify breath,
The specific deterministic processes of step S52 are, when the inflow of the drainage pumping plant keeps constant, and are prestored less than described
During the drainage pumping plant inflow maximum of storage, judge that the inlet channel of drainage pumping plant blocks, and send warning information.
In above-described embodiment, by judging that the inlet channel of drainage pumping plant blocks, alarm signal is sent to staff
Breath, the pipeline that staff timely blocks to sounding is cleared up, avoid the region ponding caused by blocking.
Correspondingly, the embodiment of the present invention additionally provides a kind of intelligent city drainage system.Fig. 8 carries for the embodiment of the present invention
A kind of intelligent city drainage system structural representation supplied.As shown in figure 8, including：Each presumptive area drainage pumping plant in city
And drainage pumping plant water inlet, water outlet pipe network, in addition to：The inflow inspection that each presumptive area drainage pumping plant water inlet pipe is installed on the net
Survey device, the water outlet amount detecting device and remote server platform that each presumptive area drainage pumping plant outlet pipe is installed on the net；
The remote server platform includes：Processing unit and transmitting element；
The water inlet amount detecting device, for detecting the inflow of each presumptive area drainage pumping plant and being sent to remote service
Device platform；
The water outlet amount detecting device, for detecting the water yield of each presumptive area drainage pumping plant and being sent to remote service
Platform；
The processing unit, for the inflow and displacement according to each presumptive area drainage pumping plant collected, and
Pre-stored city total displacement limit value, determine to need the draining pump of drainage pumping plant and its work controlled in each presumptive area
State；
The processing unit, it is additionally operable to the work shape of the draining pump according to the drainage pumping plant for needing to control in each presumptive area
State, determine control instruction；
The transmitting element, for described in the draining pump transmission for the drainage pumping plant for needing to control into each presumptive area
Control instruction, to control the working condition of the draining pump for the drainage pumping plant for needing to control in each presumptive area.
In above-described embodiment, the data that intake amount detecting device and water outlet amount detecting device are collected are sent to remotely
Server platform, the data that the water inlet amount detecting device and water outlet amount detecting device are collected include：Drainage pumping plant enters
Water and displacement, it can also include：The numbering ID of water inlet amount detecting device and water storage amount detecting device；Water inlet amount detecting device
The drainage pumping plant region installed with the numbering ID of water outlet amount detecting device with water inlet amount detecting device and water outlet amount detecting device
ID is bound, and remote server platform is collected each by processing unit to water inlet amount detecting device and water outlet amount detecting device
The inflow and displacement of presumptive area drainage pumping plant, and pre-stored city total displacement limit value analysis, are determined each pre-
The draining pump and its working condition for the drainage pumping plant for determining to need to control in region are as worked as the timing of city total displacement limit value one, respectively
Pools zone and non-pools zone in presumptive area be present, the discharge pressure of non-pools zone is less than the discharge pressure of pools zone, and city
Total displacement is equal to city total displacement limit value, does not reduce the displacement of non-pools zone now, can not just improve pools zone
Displacement, so that the ponding of pools zone is smoothly discharged, control instruction is sent to each presumptive area draining by remote server platform
The draining pump of pumping plant, to control the operating power or on off state of the draining pump of each presumptive area drainage pumping plant.
Preferably, the processing unit, is specifically used for,
By the inflow divided by displacement of drainage pumping plant, the ponding rate of drainage pumping plant is obtained；
Determine to need to control by the inflow of the drainage pumping plant, displacement, ponding rate and city total displacement limit value
The draining pump and its working condition of the drainage pumping plant of system；
It can only judge whether the drainage pumping plant region ponding occurs according to the inflow of drainage pumping plant and displacement, will enter
Water divided by displacement can obtain the ponding rate in region residing for the drainage pumping plant, and the sizes values of ponding rate can effectively really
The ponding situation in fixed each region；
Ponding situation is determined whether by the inflow and displacement of drainage pumping plant, ponding is determined according to ponding rate
Degree, determine that drainage pumping plant needs the water arranged by total displacement limit value and displacement, each area sewerage pump is obtained with this
Stand the working condition of draining pump, ponding situation is determined whether by the inflow and displacement of drainage pumping plant, according to ponding
Rate determines the degree of ponding, determines that drainage pumping plant needs the water arranged by total displacement limit value and displacement, is obtained with this
The working condition of each area sewerage pumping drainage pump.
A kind of intelligent city drainage system structural representation that Fig. 9 provides for another embodiment of the present invention is first, such as Fig. 9 institutes
Show：
Preferably, the remote server platform also includes：Judging unit, for according to each presumptive area row collected
The inflow and displacement of pump works, and pre-stored drainage pumping plant inflow maximum judge whether each presumptive area occurs
Ponding, wherein, the presumptive area for ponding occur is ponding region；The presumptive area for not occurring ponding is non-ponding region；
The processing unit, specifically for the inflow according to the ponding region drainage pumping plant and displacement and described non-
The inflow and displacement of ponding region drainage pumping plant, and the city total displacement limit value, determine each fate
The draining pump and its working condition of drainage pumping plant controlled is needed in domain, wherein, the working condition includes：The work of draining pump
The on off state of power or draining pump；
The transmitting element, the draining pump of the drainage pumping plant specifically for needing to control into each presumptive area are sent
Control instruction, the control instruction include：
Improve the draining pump operating power of ponding region drainage pumping plant or open the ponding region draining being closed
The draining pump of pumping plant is opened to improve the displacement of ponding region；
And/or reduce the draining pump operating power of non-ponding region drainage pumping plant or close the ponding in opening
The draining pump of area sewerage pumping plant is to reduce the displacement of non-ponding region；
Wherein, the displacement summation of the displacement of ponding region and non-ponding region limits no more than the city total displacement
Angle value；
Judge whether each presumptive area ponding occurs by judging unit, as inflow is more than displacement, and inflow etc.
When pre-stored drainage pumping plant inflow maximum, it may be determined that ponding occurs in the presumptive area, when inflow is less than draining
During amount, it may be determined that the presumptive area does not occur ponding；When city total displacement is equal to city total displacement limit value, improve
The draining pump operating power of ponding region drainage pumping plant opens the draining pump of closing to improve the displacement of ponding region, and
Reduce the draining pump operating power of non-ponding region drainage pumping plant or close the draining pump of unlatching to reduce non-ponding region
Displacement；When city total displacement is less than city total displacement limit value, the draining pump work of ponding region drainage pumping plant is improved
The rate of doing work opens the draining pump of closing to improve the displacement of ponding region, or reduces the row of non-ponding region drainage pumping plant
Pump working power closes the draining pump of unlatching to reduce the displacement of non-ponding region；Wherein, the draining of ponding region
The displacement summation of amount and non-ponding region is not more than the city total displacement limit value.
Preferably, the transmitting element, it is additionally operable to need the draining of drainage pumping plant controlled into each presumptive area
Pump sends control instruction, and the control instruction includes：
When the ponding rate of ponding region drainage pumping plant is equal to 1 and the inflow of drainage pumping plant is less than pre-stored drainage pumping plant
During inflow maximum, the draining pump operating power or stopping unlatching that no longer improve ponding region drainage pumping plant are closed
Draining pump；
Or when the ponding rate of non-ponding region drainage pumping plant is equal to 1, no longer reduce non-ponding region drainage pumping plant
Draining pump operating power or phase down are in the draining pump of opening；
By the value of the ponding rate of each area sewerage pumping plant, to determine the ponding situation of each area sewerage pumping plant, work as ponding
The ponding rate of area sewerage pumping plant is equal to 1 and the inflow of drainage pumping plant is less than pre-stored drainage pumping plant inflow maximum
When, it can be determined that ponding region no longer reduces the draining pump operating power of non-ponding region drainage pumping plant there is no ponding
Or the draining pump of unlatching is closed.When the ponding rate of non-ponding region drainage pumping plant is equal to 1, it can be determined that non-ponding region is again
Reduce if displacement it is possible that ponding, thus no longer reduce non-ponding region drainage pumping plant draining pump operating power or
The draining pump of unlatching is closed.
Figure 10 is a kind of intelligent city drainage system structural representation that another embodiment of the present invention provides second, such as Figure 10
It is shown：
Preferably, the drainage system also includes：Warning device；The judging unit, it is additionally operable to each pre- according to collecting
The inflow and pre-stored drainage pumping plant inflow maximum for determining area sewerage pumping plant judge that the inlet channel of drainage pumping plant is
It is no to block, when the inlet channel of drainage pumping plant blocks, warning information is sent by the warning device；
Reader should be understood that in the description of this specification, reference term " one embodiment ", " some embodiments ", " show
The description of example ", " specific example " or " some examples " etc. mean to combine the specific features of the embodiment or example description, structure,
Material or feature are contained at least one embodiment or example of the present invention.In this manual, above-mentioned term is shown
The statement of meaning property need not be directed to identical embodiment or example.Moreover, specific features, structure, material or the feature of description
It can be combined in an appropriate manner in any one or more embodiments or example.In addition, in the case of not conflicting, this
The technical staff in field can be by the different embodiments or example described in this specification and the spy of different embodiments or example
Sign is combined and combined.
It is apparent to those skilled in the art that for convenience of description and succinctly, the dress of foregoing description
The specific work process with unit is put, the corresponding process in preceding method embodiment is may be referred to, will not be repeated here.
In several embodiments provided herein, it should be understood that disclosed apparatus and method, it can be passed through
Its mode is realized.For example, device embodiment described above is only schematical, for example, the division of unit, is only
A kind of division of logic function, can there is an other dividing mode when actually realizing, for example, multiple units or component can combine or
Person is desirably integrated into another system, or some features can be ignored, or does not perform.
The unit illustrated as separating component can be or may not be physically separate, be shown as unit
Part can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple networks
On unit.Some or all of unit therein can be selected to realize the mesh of scheme of the embodiment of the present invention according to the actual needs
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can also
It is that unit is individually physically present or two or more units are integrated in a unit.It is above-mentioned integrated
Unit can both be realized in the form of hardware, can also be realized in the form of SFU software functional unit.
If integrated unit is realized in the form of SFU software functional unit and is used as independent production marketing or in use, can
To be stored in a computer read/write memory medium.Based on such understanding, technical scheme substantially or
Say that the part to be contributed to prior art, or all or part of the technical scheme can be embodied in the form of software product
Out, the computer software product is stored in a storage medium, including some instructions are causing a computer equipment
(can be personal computer, server, or network equipment etc.) performs all or part of each embodiment method of the present invention
Step.And foregoing storage medium includes：It is USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only Memory), random
Access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with Jie of store program codes
Matter.
More than, it is only embodiment of the invention, but protection scope of the present invention is not limited thereto, and it is any to be familiar with
Those skilled in the art the invention discloses technical scope in, various equivalent modifications or substitutions can be readily occurred in,
These modifications or substitutions should be all included within the scope of the present invention.Therefore, protection scope of the present invention should be wanted with right
The protection domain asked is defined.
Claims (10)
1. a kind of intelligent city water discharge method, it is characterised in that comprise the following steps：
S1, inflow and displacement according to each presumptive area drainage pumping plant collected, and the pre-stored total draining in city
Limit value is measured, determines to need the draining pump and its working condition of drainage pumping plant controlled in each presumptive area；
S2, the working condition according to the draining pump of the drainage pumping plant for needing to control in each presumptive area, determine control instruction；
S3, the draining pump for the drainage pumping plant for needing into each presumptive area to control send the control instruction, to control
The working condition of the draining pump of the drainage pumping plant controlled is needed in each presumptive area.
2. a kind of intelligent city water discharge method according to claim 1, it is characterised in that each according to collecting in S1
The inflow and displacement of presumptive area drainage pumping plant, and pre-stored city total displacement limit value, determine each fate
The draining pump and its working condition of drainage pumping plant controlled is needed in domain, is specifically included：
By the inflow divided by displacement of drainage pumping plant, the ponding rate of the drainage pumping plant is obtained；
Determine to need what is controlled by the inflow of the drainage pumping plant, displacement, ponding rate and city total displacement limit value
The draining pump and its working condition of drainage pumping plant.
3. a kind of intelligent city water discharge method according to claim 2, it is characterised in that S1 is each pre- according to what is collected
Determine the inflow and displacement of area sewerage pumping plant, and pre-stored city total displacement limit value, determine each presumptive area
Before the draining pump and its working condition of the middle drainage pumping plant for needing to control, the intelligent city water discharge method also includes：
According to the inflow and displacement of each presumptive area drainage pumping plant collected, and pre-stored drainage pumping plant inflow
Maximum judges whether each presumptive area ponding occurs, wherein, the presumptive area for ponding occur is ponding region；Do not occur ponding
Presumptive area be non-ponding region；
According to the inflow and displacement of each presumptive area drainage pumping plant collected, and the pre-stored total draining in city in S1
Limit value is measured, determines to need the draining pump and its working condition of drainage pumping plant controlled in each presumptive area, including, according to described
The inflow of ponding region drainage pumping plant and displacement and the inflow and displacement of the non-ponding region drainage pumping plant, and
The city total displacement limit value, determine to need the draining pump of drainage pumping plant and its work controlled in each presumptive area
State, wherein, the working condition includes：The operating power of draining pump or the on off state of draining pump；
In S2, the control instruction includes：
Improve the draining pump operating power of the ponding region drainage pumping plant or open the ponding region being closed
The draining pump of drainage pumping plant；
And/or reduce the draining pump operating power of the non-ponding region drainage pumping plant or close described in opening
The draining pump of non-ponding region drainage pumping plant；
Wherein, the displacement summation of the displacement of the ponding region and the non-ponding region is less than or equal to the city
Total displacement limit value；
The control instruction also includes：
When the ponding rate of the ponding region drainage pumping plant is equal to 1 and the inflow of drainage pumping plant is less than pre-stored drainage pumping plant
During inflow maximum, the draining pump work of ponding region drainage pumping plant is calculated by the inflow of the ponding region drainage pumping plant
The quantity of the draining pump for the ponding region drainage pumping plant that the rate of doing work or unlatching are closed；
And/or when the ponding rate of the non-ponding region drainage pumping plant is equal to 1, pass through the non-ponding region drainage pumping plant
Inflow calculate the draining pump operating power of ponding region drainage pumping plant or open the ponding region that is closed
The quantity of the draining pump of drainage pumping plant.
A kind of 4. intelligent city water discharge method according to any one of claim 1-3, it is characterised in that basis in S1
The inflow and displacement of each presumptive area drainage pumping plant collected, and pre-stored city total displacement limit value, really
The draining pump and its working condition of drainage pumping plant controlled is needed in fixed each presumptive area, in addition to：It is each pre- according to what is collected
The inflow and pre-stored drainage pumping plant inflow maximum for determining area sewerage pumping plant judge that the inlet channel of drainage pumping plant is
It is no to block, when the inlet channel of drainage pumping plant blocks, send warning information.
5. a kind of intelligent city water discharge method according to claim 4, it is characterised in that when entering for the drainage pumping plant
Water quantity holding is constant, and during less than the pre-stored drainage pumping plant inflow maximum, judges the inlet channel of drainage pumping plant
Block, and send warning information.
6. a kind of intelligent city drainage system, including：Each presumptive area drainage pumping plant and drainage pumping plant water inlet, water outlet in city
Pipe network, it is characterised in that also include：Water inlet amount detecting device that each presumptive area drainage pumping plant water inlet pipe is installed on the net,
The water outlet amount detecting device and remote server platform that each presumptive area drainage pumping plant outlet pipe is installed on the net；It is described long-range
Server platform includes：Processing unit and transmitting element；
The water inlet amount detecting device, put down for detecting the inflow of each presumptive area drainage pumping plant and being sent to remote server
Platform；
The water outlet amount detecting device, put down for detecting the water yield of each presumptive area drainage pumping plant and being sent to remote service
Platform；
The processing unit, for the inflow and displacement according to each presumptive area drainage pumping plant collected, and prestore
The city total displacement limit value of storage, the draining pump for the drainage pumping plant for determining to need to control in each presumptive area and its shape that works
State；
The processing unit, it is additionally operable to the work shape of the draining pump according to the drainage pumping plant for needing to control in each presumptive area
State, determine control instruction；
The transmitting element, the draining pump of the drainage pumping plant for needing to control into each presumptive area send control and referred to
Order, to control the working condition of the draining pump for the drainage pumping plant for needing to control in each presumptive area.
A kind of 7. intelligent city drainage system according to claim 6, it is characterised in that the processing unit, specifically
For,
By the inflow divided by displacement of drainage pumping plant, the ponding rate of the drainage pumping plant is obtained；
Determine to need what is controlled by the inflow of the drainage pumping plant, displacement, ponding rate and city total displacement limit value
The draining pump and its working condition of drainage pumping plant.
A kind of 8. intelligent city drainage system according to claim 7, it is characterised in that the remote server platform
Also include：Judging unit, for the inflow and displacement according to each presumptive area drainage pumping plant collected, and it is pre-stored
Drainage pumping plant inflow maximum judge whether each presumptive area ponding occurs, wherein, there is the presumptive area of ponding for product
Aqua region；The presumptive area for not occurring ponding is non-ponding region；
The processing unit, specifically for the inflow according to the ponding region drainage pumping plant and displacement and the non-ponding
The inflow and displacement of area sewerage pumping plant, and the city total displacement limit value, are determined in each presumptive area
The draining pump and its working condition of drainage pumping plant controlled is needed, wherein, the working condition includes：The operating power of draining pump
Or the on off state of draining pump；
The transmitting element, the draining pump of the drainage pumping plant specifically for needing to control into each presumptive area send control
Instruction, the control instruction include：
Improve the draining pump operating power of the ponding region drainage pumping plant or open the ponding region being closed
The draining pump of drainage pumping plant is opened；
And/or reduce the draining pump operating power of the non-ponding region drainage pumping plant or close described in opening
The draining pump of non-ponding region drainage pumping plant；
Wherein, the displacement summation of the displacement of the ponding region and the non-ponding region is less than or equal to the city
Total displacement limit value；
The transmitting element, the draining pump for the drainage pumping plant for being additionally operable to need to control into each presumptive area send control and referred to
Order, the control instruction include：
When the ponding rate of the ponding region drainage pumping plant is equal to 1 and the inflow of drainage pumping plant is less than pre-stored drainage pumping plant
During inflow maximum, the draining pump work of ponding region drainage pumping plant is calculated by the inflow of the ponding region drainage pumping plant
The quantity of the draining pump for the ponding region drainage pumping plant that the rate of doing work or unlatching are closed；
And/or when the ponding rate of the non-ponding region drainage pumping plant is equal to 1, pass through the non-ponding region drainage pumping plant
Inflow calculate the draining pump operating power of ponding region drainage pumping plant or open the ponding region that is closed
The quantity of the draining pump of drainage pumping plant.
A kind of 9. intelligent city drainage system according to any one of claim 6-8, it is characterised in that the draining system
System also includes：Warning device；The judging unit, be additionally operable to according to the inflow of each presumptive area drainage pumping plant collected and
Pre-stored drainage pumping plant inflow maximum judges whether the inlet channel of drainage pumping plant blocks, when entering for drainage pumping plant
When waterpipe blocks, warning information is sent by the warning device.
A kind of 10. intelligent city drainage system according to claim 9, it is characterised in that the judging unit, specifically
For keeping constant when the inflow of the drainage pumping plant, and during less than the pre-stored drainage pumping plant inflow maximum,
Judge that the inlet channel of drainage pumping plant blocks, when the inlet channel of drainage pumping plant blocks, filled by the alarm
Put transmission warning information.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710487946.9A CN107386422B (en) | 2017-06-23 | 2017-06-23 | A kind of intelligent city water discharge method and system |
| PCT/CN2017/097581 WO2018232921A1 (en) | 2017-06-23 | 2017-08-16 | Smart city water drainage method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710487946.9A CN107386422B (en) | 2017-06-23 | 2017-06-23 | A kind of intelligent city water discharge method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107386422A true CN107386422A (en) | 2017-11-24 |
| CN107386422B CN107386422B (en) | 2019-08-23 |
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|---|---|---|---|
| CN201710487946.9A Active CN107386422B (en) | 2017-06-23 | 2017-06-23 | A kind of intelligent city water discharge method and system |
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| CN (1) | CN107386422B (en) |
| WO (1) | WO2018232921A1 (en) |
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Also Published As
| Publication number | Publication date |
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| WO2018232921A1 (en) | 2018-12-27 |
| CN107386422B (en) | 2019-08-23 |
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