CN107421601B - Intelligent remote real-time monitoring system and its monitoring method to ocean tidal level - Google Patents
Intelligent remote real-time monitoring system and its monitoring method to ocean tidal level Download PDFInfo
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- CN107421601B CN107421601B CN201710385801.8A CN201710385801A CN107421601B CN 107421601 B CN107421601 B CN 107421601B CN 201710385801 A CN201710385801 A CN 201710385801A CN 107421601 B CN107421601 B CN 107421601B
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
- G01F23/18—Indicating, recording or alarm devices actuated electrically
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/14—Receivers specially adapted for specific applications
- G01S19/16—Anti-theft; Abduction
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Fluid Mechanics (AREA)
- Alarm Systems (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The present invention relates to monitoring systems, disclose intelligent remote real-time monitoring system and its monitoring method to ocean tidal level, it includes pressure sensor (1), it further include a plurality of clipper tube (3), pressure sensor (1) is mounted on clipper tube (3), it further include solar power supply apparatus (7), digital altimeter (6) and central controller (8), solar power supply apparatus (7) is powered to digital altimeter (6) and central controller (8), central controller (8) is connect with pressure sensor (1) and digital altimeter (6) and the data transmitted to it carry out the tide level data that analysis obtains observation place sea area.The present invention has the characteristics that intelligence, automatic, accurate, continuous, acquisition in real time and sends tidal level information, it can provide strong support, the tidal data under extreme condition be collected, storm tide research is of great significance for scientific research, ocean engineering construction, military affairs, Fairway navigation management etc..
Description
Technical field
The present invention relates to monitoring system more particularly to intelligent remote real-time monitoring system and its to the monitoring side of ocean tidal level
Method.
Background technique
Tidal level information is directly related to the oceanographic researches such as oceanics, military oceanography and scientific research of seas
Every aspect.The tidal level information for quickly and accurately obtaining target sea area has very important significance.Currently used seawater tide
Position monitoring instrument mainly has pressure type tide gauge, float-type tide gauge, Acoustic Tide Gauge etc..But float-type tide gauge needs are beaten
Tide gauge well, simplification are poor；Acoustic Tide Gauge is harsher to environmental requirement, freezed in winter sea is unable to tidal observation simultaneously；And it presses
The manufacturing technology of power formula tide gauge itself is highly developed, and instrument itself is very high to the accuracy of observation of tidal level, but band
The tide gauge of ventilation cable is using by having been limited: one, tracheae must be firm, if tracheal rupture makes seawater flow into tide register
Tide register can be made to burn；Two, due to there is tracheae to lead to bank or sea, cause tide register to lay and be unable to offshore farther out, tidal observation is deep
Degree will not be too deep, using being above restricted and absolute pressure formula tide gauge both can be made wired equipment due to internal obstructed atmosphere,
It can also be used as self contained device, but its tidal level information measured is and the sum of atmospheric pressure and seawater pressure, Yao Qi
The one synchronous work of atmospheric pressure detection device of configuration nearby, practical operation are got up also inconvenient.With scientific research of seas
With ocean engineering exploitation continuous progress, to tidal level monitoring timeliness and persistence, the portability of equipment and installation it is simple
The intelligence and interactivity of property, the accuracy of data and monitoring are put forward new requirements, but current tidal observation technology is not yet full
Sufficient aforementioned claim.
Summary of the invention
The present invention is for shortage timeliness, persistence, the portability of equipment, the simplification of installation, data in the prior art
Accuracy and monitoring intelligence and the shortcomings that interactivity, provide intelligent remote real-time monitoring system and its to oceanic tide
The monitoring method of position.
In order to solve the above-mentioned technical problem, the present invention is addressed by following technical proposals:
Intelligent remote real-time monitoring system, including pressure sensor, further include a plurality of clipper tube, and each clipper tube passes through flange
Connection, pressure sensor is mounted on the clipper tube of bottom, further include solar power supply apparatus, digital altimeter and in
Entreat controller, solar power supply apparatus is powered to digital altimeter and central controller, central controller and pressure sensor and
Digital altimeter connects and the data transmitted to it carry out the tide level data that analysis obtains observation place sea area, further includes remotely taking
It is engaged in device and backup computer, including data processing module on backup computer, tide level data is sent to remote service by central controller
Tide level data is sent to backup computer by mail he by device, remote server, and it is standby that backup computer receives tide level data progress
Part simultaneously analyzes tide level data by data processing module.
Preferably, clipper tube includes the punching clipper tube below the water surface and the non-porous wave absorption above the water surface
Pipe.
Preferably, the tube wall of punching clipper tube is equipped with a diameter 5mm~10mm every 1000mm in the vertical direction
Hole, two adjacent holes be located at punching clipper tube axis two sides.
Preferably, being equipped with inner tube in punching clipper tube, inner tube is equipped with a plurality of helicla flute being recessed inwardly, helicla flute
Between spacing be 20mm~40mm, the first hole and the second hole are additionally provided on helicla flute, the first hole and the second hole are in same spiral shell
Interval setting in spin slot, the diameter in the first hole are 5mm~7mm, and the diameter in the second hole is 2mm~4mm.Pass through the spiral in inner tube
Slot can eliminate the influence of wave, cooperate the design buffering in the first hole and the second hole by there is the water of the hole entrance on the clipper tube of hole
Stream.
Preferably, the inner wall of punching clipper tube is equipped with bulge loop, inner tube is equipped with the annular groove cooperated with bulge loop.
Preferably, clipper tube is respectively the etch-proof 316 steel stainless steel tube of 2000mm and 3000mm by more root long degree
It is coupled.
Preferably, being fixed with water gauge piece outside clipper tube, the outer diameter of water gauge piece is 450mm~490mm, and internal diameter is
430mm~470mm, with a thickness of 7mm~13mm.
Preferably, pressure sensor diameter is not more than 30mm.
Intelligent remote real-time monitoring system is to the monitoring method of ocean tidal level, and the method includes the steps of:
1) it is determined according to the tidal level variation range in place to be measured and needs to install the total length of clipper tube and determine punching wave absorption
The quantity of pipe and non-porous clipper tube；
2) the punching clipper tube determined is connected to non-porous clipper tube and is erected at tidal level station placement, passes through cable
Connect pressure sensor and central controller；
3) remote controlled central controller receives the pressure data and number that pressure sensor receives by cable
The barometric pressure data that barometer measures obtains the tide level data in observation place sea area after subtracting each other；
4) tide level data received from remote controlled central controller sends data to long-range clothes by data flow
It is engaged in device, includes GPRS module in remote server, tide level data is sent to specified mailbox with mail he by GPRS module；
5) backup computer is specified mailbox by data processing module automated log on mounted thereto and is downloaded in mail
Tide level data, data processing module carry out parsing to the tide level data of downloading and the numerical value for the time and parameters being resolved to
It is added to the lane database of backup computer.
The present invention is due to using above technical scheme, and have significant technical effect: the present invention is avoided with clipper tube
The excavation of tide gauge well and addressing limitation, digital altimeter are integrated into whole system, the institute of absolute pressure type tide register have both been utilized
It is advantageous, and the shortcomings that evaded absolute pressure type tide register, at the same again can independent output services ground Real-Time Atmospheric pressure value, can be accurate
Tidal level value is measured, substantially the not influence of the external conditions such as climate, hydrology；Solar electric power supply system provides uninterrupted electric power, can
Realize long-term unattended surveillance.Intelligent system design, can be according to weather condition and particular/special requirement remote control data
Acquire density；Unique burglary-resisting system design, it is ensured that the safety of system；Energy-saving circuit design keeps system bulk big
Big to reduce, energy consumption greatly reduces, and the convenience of portability and installation greatly enhances.This system has intelligence, automatic, accurate, even
It the characteristics of continuous, acquisition in real time and transmission tidal level information, can be provided for scientific research, ocean engineering construction, military affairs, Fairway navigation management etc.
Strong support collects the tidal data under extreme condition, storm tide research is of great significance.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Fig. 2 is the structural schematic diagram of the punching clipper tube and inner tube of Fig. 1.
Fig. 3 is data acquisition structural block diagram of the invention.
Fig. 4 is data receiver program flow diagram of the invention.
Fig. 5 is interactive software program flow diagram of the invention.
Fig. 6 is anti-theft program flow chart of the invention.
The toponym that each number designation is referred in attached drawing is as follows: 1-pressure sensor, 2-water gauge pieces, 3-wave absorptions
Pipe, 4-flanges, 5-cables, 6-digital altimeters, 7-solar power supply apparatus, 8-central controllers, 31-punching wave absorptions
Pipe, 32-non-porous clipper tubes, 33-inner tubes, 311-holes, 312-bulge loops, 331-helicla flutes, 332-annular grooves, 3311-
First hole, the 3312-the second hole.
Specific embodiment
Present invention is further described in detail with embodiment with reference to the accompanying drawing.
Embodiment 1
Intelligent remote real-time monitoring system further includes a plurality of clipper tube 3, respectively disappears as shown, including pressure sensor 1
Wave duct 3 is connected by flange 4, and the specification of flange 4 is the hole heart away from 980mm, thickness 20mm, and pressure sensor 1 is mounted on most
It further include the solar power supply apparatus 7 being mounted on clipper tube 3, digital altimeter 6 and center control on the clipper tube 3 of lower section
Device 8, solar power supply apparatus 7 are powered to digital altimeter 6 and central controller 8, and central controller 8 is by being located at clipper tube 3
Interior cable 5 is connect with pressure sensor 1, and central controller 8 connects pressure sensor 1 and digital altimeter 6 and transmits to it
Data carry out analysis and obtain the tide level data in observation place sea area, further include remote server and backup computer, backup computer
Upper includes data processing module, and tide level data is sent to remote server by central controller 8, and remote server is by tide level data
It is sent to backup computer by mail he, backup computer receives tide level data and back up and by data processing module to tide
Position data are analyzed.
To guarantee that system work persistence, system have carried out high energy saving processing, system standby electric current about 100uA is left
There are 3 pieces of high-performance lithium ion batteries on the right side inside central controller, in the case where fully charged, if presetting acquisition one in every 10 minutes
Secondary data, the data of transmission in every 2 hours, instrument can with normal acquisition, send data and maintain system worked well 1 year with
On.When accessing solar power supply apparatus 7, the solar energy that solar panel is collected into is converted to electric energy and is stored in lithium-ion electric
Chi Zhong is can guarantee within systems life cycle so never because short of electricity stops working.
For the interactivity for reaching system, interactive software system is developed, when acquisition for real time modifying tidal level information
Between, frequency acquisition, remote power-off, remote system upgrade, data subsequent collection and repeating transmission；For the intelligence for reaching system, develop anti-
Theft system, when intelligent remote real-time monitoring system is knocked down, is damaged and is stolen, system meeting these three situations of automatic discrimination,
Especially when stolen, system meeting high density issues latitude and longitude information used for positioning, and principle is integrated one in systems
GPS module and inclination sensor, when inclination sensor inclination angle is greater than certain angle or is hit or damaged energetically, antitheft system
It unites and issues information to central controller 8, central controller 8 can provide the location information of message information or intensive acquisition GPS module
And it is sent to public mailbox server and this system private server.
After starting measurement, the pressure data that pressure sensor 1 measures reaches central controller 8 by armored cable 5, in
The Real-Time Atmospheric pressure value of synchronous digital barometer 6 that centre controller 8 receives by central controller 8 is transmitted to central control after subtracting each other
GPRS module in device 8 processed is sent to mailbox server by GPRS module with mail he, later by GPRS module with number
This system private server, clipper tube 3, pressure sensor 1, digital altimeter 6, central processing unit are sent to according to the form of stream
8, solar power supply apparatus 7 forms collection in worksite emitter.
Clipper tube 3 includes the punching clipper tube 31 below the water surface and the non-porous clipper tube 32 above the water surface.For
The fixation for increasing clipper tube 3 and seabed, will not sink when laying for a long time and lateral displacement, 3 bottom of clipper tube after connection are opened
Mouthful, while being fixed by fixed system and bunding or other support systems, it connects molding 3 top of clipper tube and is connected by flange 4
Connect remote controlled central controller 8.
The tube wall for punching clipper tube 31 is equipped with the hole 311 of a diameter 7.5mm, wave absorption every 1000mm in the vertical direction
Pipe 3 be coupled by the etch-proof 316 steel stainless steel tube that more root long degree are respectively 2000mm and 3000mm namely 2000mm not
Rust steel pipe only makes a hole, and 3000mm stainless steel tube makes a call to two holes, and two adjacent holes 311 are located at the axis of punching clipper tube 31
Two sides.
Inner tube 33 is installed, inner tube 33 is equipped with a plurality of helicla flute 331 being recessed inwardly, helicla flute in punching clipper tube 31
Spacing between 331 is 30mm, is additionally provided with the first hole 3311 and the second hole 3312, the first hole 3311 and second on helicla flute 331
Hole 3312 is spaced setting in same helicla flute 331, and the diameter in the first hole 3311 is 6mm, and the diameter in the second hole 3312 is
3mm。
The inner wall for punching clipper tube 31 is equipped with bulge loop 312, and inner tube 33 is equipped with the annular groove cooperated with bulge loop 312
332, by the cooperation of bulge loop 312 and annular groove 332, guarantee that inner tube 33 is mounted in macropore clipper tube 31 and around macropore wave absorption
The axis of pipe 31 rotates.
Water gauge piece 2 is fixed with outside clipper tube 3, the outer diameter of water gauge piece 2 is 470mm, internal diameter 450mm, with a thickness of 10mm.
1 diameter of pressure sensor be not more than 30mm, can guarantee armouring communication cable 5 connect under in clipper tube 3 from
By vertical movement.
Intelligent remote real-time monitoring system is to the monitoring method of ocean tidal level, and the method includes the steps of:
1) it is determined according to the tidal level variation range in place to be measured and needs to install the total length of clipper tube 3 and determine punching wave absorption
The quantity of pipe 31 and non-porous clipper tube 32；
2) the punching clipper tube 31 determined and non-porous clipper tube 32 are connected and is erected at tidal level station placement, it is non-porous
Clipper tube 32 is mounted on the top of punching clipper tube 31 and exposes the surface, and connects pressure sensor 1 by cable 5 and center controls
Device 8；
3) remote controlled central controller 8 receives the pressure data that pressure sensor 1 receives by armored cable 5
The barometric pressure data measured with digital altimeter 6 obtains the tide level data in observation place sea area after subtracting each other；
4) long-range clothes are sent data to by data flow from the tide level data that remote controlled central controller 8 receives
It is engaged in device, includes GPRS module in remote server, tide level data is sent to specified mailbox with mail he by GPRS module；
5) backup computer is specified mailbox by data processing module automated log on mounted thereto and is downloaded in mail
Tide level data, data processing module carry out parsing to the tide level data of downloading and the numerical value for the time and parameters being resolved to
It is added to the lane database of backup computer, receives tide level data information, first can guarantees that data processing module can be simultaneously
The tide level data information at multiple tidal level stations is handled, tide level data user of service second can be guaranteed in any place that can be surfed the Internet
Tidal level information can be received, the pressure data information that above-mentioned 5 steps are obtained is depicted as tide level data song by special-purpose software
Line is shown, quickly changes (burr) since the design of clipper tube has eliminated the water surface caused by wave, final accurate output
Tidal level information.
In short, the foregoing is merely presently preferred embodiments of the present invention, it is all according to equalization made by scope of the present invention patent
Variation and modification, shall all be covered by the patent of the invention.
Claims (7)
1. intelligent remote real-time monitoring system, including pressure sensor (1), feature with: further include a plurality of clipper tube (3),
Each clipper tube (3) is connected by flange (4), is fixed with water gauge piece (2) outside clipper tube (3), and pressure sensor (1) installation is in place
In on the clipper tube (3) of bottom, further including solar power supply apparatus (7), digital altimeter (6) and central controller (8), too
Positive energy power supply unit (7) is powered to digital altimeter (6) and central controller (8), central controller (8) and pressure sensor
(1) and digital altimeter (6) connects and the data transmitted to it carry out the tide level data that analysis obtains observation place sea area, also wraps
Remote server and backup computer are included, includes data processing module on backup computer, central controller (8) sends tide level data
To remote server, tide level data is sent to backup computer by mail he by remote server, and backup computer receives tidal level
Data back up and analyzed by data processing module tide level data；Clipper tube (3) includes being located at below the water surface
Punch clipper tube (31) and the non-porous clipper tube (32) above the water surface；Inner tube (33) are installed in punching clipper tube (31),
Inner tube (33) is equipped with a plurality of helicla flute (331) being recessed inwardly, and the spacing between helicla flute (331) is 20mm~40mm, spiral shell
The first hole (3311) and the second hole (3312) are additionally provided on spin slot (331), the first hole (3311) are with the second hole (3312) same
Interval setting in helicla flute (331), the diameter of the first hole (3311) are 5mm~7mm, and the diameter of the second hole (3312) is 2mm
~4mm.
2. intelligent remote real-time monitoring system as described in claim 1, it is characterized in that: the tube wall of punching clipper tube (31) is perpendicular
Histogram is equipped with the hole (311) of a diameter 5mm~10mm every 1000mm upwards, and adjacent two holes (311) are located at punching wave absorption
Manage the two sides of the axis of (31).
3. intelligent remote real-time monitoring system as described in claim 1, it is characterized in that: being set on the inner wall of punching clipper tube (31)
Have bulge loop (312), inner tube (33) is equipped with the annular groove (332) cooperated with bulge loop (312).
4. intelligent remote real-time monitoring system as described in claim 1, it is characterized in that: clipper tube (3) is distinguished by more root long degree
It is coupled for the etch-proof 316 steel stainless steel tube of 2000mm and 3000mm.
5. intelligent remote real-time monitoring system as described in claim 1, it is characterized in that: the outer diameter of water gauge piece (2) be 450mm~
490mm, internal diameter is 430mm~470mm, with a thickness of 7mm~13mm.
6. intelligent remote real-time monitoring system as described in claim 1, it is characterized in that: pressure sensor (1) diameter is not more than
30mm。
7. intelligent tidal level remote real time monitoring is to the monitoring method of ocean tidal level, it is characterised in that: the method includes the steps of:
1) it is determined according to the tidal level variation range in place to be measured and needs to install the total length of clipper tube (3) and determine punching clipper tube
(31) and the quantity of non-porous clipper tube (32) it, is equipped with inner tube (33) in punching clipper tube (31), inner tube (33) is equipped with a plurality of
The helicla flute (331) being recessed inwardly, the spacing between helicla flute (331) are 20mm~40mm, and the is additionally provided on helicla flute (331)
One hole (3311) and the second hole (3312), the first hole (3311) and the second hole (3312) interval in same helicla flute (331)
Setting, the diameter of the first hole (3311) are 5mm~7mm, and the diameter of the second hole (3312) is 2mm~4mm；
2) the punching clipper tube (31) determined and non-porous clipper tube (32) are connected and is erected at tidal level station placement, passed through
Cable (5) connects pressure sensor (1) and central controller (8)；
3) remote controlled central controller (8) by cable (5) receive pressure sensor (1) pressure data for receiving with
The barometric pressure data that digital altimeter (6) measures obtains the tide level data in observation place sea area after subtracting each other；
4) remote service is sent data to by data flow from the tide level data that remote controlled central controller (8) receives
Device, includes GPRS module in remote server, and tide level data is sent to specified mailbox with mail he by GPRS module；
5) backup computer specifies mailbox by data processing module automated log on mounted thereto and downloads the tidal level in mail
Data, data processing module carry out parsing to the tide level data of downloading and the numerical value for the time and parameters being resolved to are added
To the lane database of backup computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710385801.8A CN107421601B (en) | 2017-05-26 | 2017-05-26 | Intelligent remote real-time monitoring system and its monitoring method to ocean tidal level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710385801.8A CN107421601B (en) | 2017-05-26 | 2017-05-26 | Intelligent remote real-time monitoring system and its monitoring method to ocean tidal level |
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| Publication Number | Publication Date |
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| CN107421601A CN107421601A (en) | 2017-12-01 |
| CN107421601B true CN107421601B (en) | 2019-06-28 |
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| CN201710385801.8A Expired - Fee Related CN107421601B (en) | 2017-05-26 | 2017-05-26 | Intelligent remote real-time monitoring system and its monitoring method to ocean tidal level |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110887547B (en) * | 2019-11-26 | 2020-12-22 | 交通运输部南海航海保障中心广州海事测绘中心 | Ocean tide level continuous monitoring device |
| CN112233387A (en) * | 2020-10-12 | 2021-01-15 | 中国海洋大学 | Coastal storm surge monitoring device and online monitoring and early warning system |
| CN114777850A (en) * | 2022-06-21 | 2022-07-22 | 自然资源部第二海洋研究所 | Coastal erosion and sea level real-time monitoring device and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288258A (en) * | 2011-05-16 | 2011-12-21 | 青岛滩海工程咨询研究院 | System and method for remotely and automatically monitoring ocean sea levels in real time |
| CN203132652U (en) * | 2013-03-22 | 2013-08-14 | 浙江省水文局 | Simple water level table |
| CN205049202U (en) * | 2015-10-13 | 2016-02-24 | 国家气候中心 | Liquid level detector |
-
2017
- 2017-05-26 CN CN201710385801.8A patent/CN107421601B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288258A (en) * | 2011-05-16 | 2011-12-21 | 青岛滩海工程咨询研究院 | System and method for remotely and automatically monitoring ocean sea levels in real time |
| CN203132652U (en) * | 2013-03-22 | 2013-08-14 | 浙江省水文局 | Simple water level table |
| CN205049202U (en) * | 2015-10-13 | 2016-02-24 | 国家气候中心 | Liquid level detector |
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| CN107421601A (en) | 2017-12-01 |
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