CN109813391A - A kind of hydraulic engineering water level alarm - Google Patents
A kind of hydraulic engineering water level alarm Download PDFInfo
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- CN109813391A CN109813391A CN201910243969.4A CN201910243969A CN109813391A CN 109813391 A CN109813391 A CN 109813391A CN 201910243969 A CN201910243969 A CN 201910243969A CN 109813391 A CN109813391 A CN 109813391A
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- fixedly installed
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Abstract
The invention discloses a kind of hydraulic engineering water level alarms, including runner assembly, radar type water-level gauge and positioning component, pillar is fixedly installed at the top of the positioning component, the surface activity of the pillar is equipped with fixation kit, the surface activity of the fixation kit is equipped with shell, the inside of the shell is fixedly installed with solar charging controller, the bottom of the solar charging controller is fixedly installed with low-power consumption detection and control terminal, the bottom of the low-power consumption detection and control terminal is fixedly installed with battery, the surface of the shell is equipped with door body by articulate, loudspeaker are fixedly installed at the top of the pillar, the two sides of the loudspeaker are all fixedly installed with telescopic component, the top of the telescopic component is all fixedly installed with runner assembly, solar panel is fixedly installed at the top of the runner assembly.The present invention has the present apparatus during use by being provided with a series of structure to facilitate adjusting and simple operation and other advantages.
Description
Technical field
The present invention relates to hydraulic engineering equipment technical field, specially a kind of hydraulic engineering water level alarm.
Background technique
With the continuous development in epoch, played an important role during hydraulic engineering water level alarm, water conservancy
Engineering is the surface water and groundwater for controlling and deploying nature, reaches the engineering removing the evil emerging sharp purpose and building, also referred to as
For Hydraulic Projects, water is human being's production and essential precious resources of living, but the state of its naturally occurring not fully meets
The needs of the mankind only build hydraulic engineering, just can control water flow, prevent flood, and carry out the adjusting and distribution of water,
To meet people's lives and production to the needs of water resource, hydraulic engineering needs to use water level alarm to measure, now
Some hydraulic engineerings are adjusted with water level alarm inconvenience staff, influence the precision of level measuring, and operate
It is complicated, it has not been convenient to which that staff carries out using the efficiency of work being influenced, thus it is proposed that a kind of hydraulic engineering water level alarm
Device is existing to solve the problems, such as.
Furthermore in the prior art, patent document: 208043190U, CN207407963U, CN205317303U are to thunder
Up in level alarm for water scalable radar and device of solar generating studied, but for the flow direction and wind of water flow
The measurement of speed does not refer to, and generating equipment is single, needs to be arranged additional sensor or monitoring device, so that cost
It dramatically increases, proposes a kind of high integration scheme that can solve above-mentioned technical problem simultaneously in this application, can bring aobvious
The economic benefit of work.
Furthermore in actual liquid level measurement working scene, often very important is fluctuation pair that sea wind brings the water surface to generate
The influence of liquid level needs to realize accurate measurement by multiple sensors such as wind speed in the prior art, further
Increase cost.
Summary of the invention
The purpose of the present invention is to provide a kind of hydraulic engineering water level alarms, to solve to mention in above-mentioned background technique
Out the problem of.
To achieve the above object, the invention provides the following technical scheme: a kind of hydraulic engineering water level alarm, including
Runner assembly, radar type water-level gauge and positioning component are fixedly installed with pillar, the table of the pillar at the top of the positioning component
Face is movably installed with fixation kit, and the surface activity of the fixation kit is equipped with shell, and the inside of the shell is fixedly mounted
There is solar charging controller, the bottom of the solar charging controller is fixedly installed with low-power consumption detection and control terminal, described low
The bottom of power consumption measuring and control terminal is fixedly installed with battery, and the surface of the shell is equipped with door body by articulate, described
It is fixedly installed loudspeaker at the top of pillar, the two sides of the loudspeaker are all fixedly installed with telescopic component, and the one of the telescopic component
Side is all fixedly installed with radar type water-level gauge, and the top of the telescopic component is all fixedly installed with runner assembly, the rotating group
Solar panel is fixedly installed at the top of part.
Preferably, the inside of the runner assembly is fixedly installed with shaft, and the both ends of shaft are all movably installed with rotating bar,
The side of shaft is movably installed with fixing bolt.
Preferably, the inside of the telescopic component is fixedly installed extension sleeve, and the internal activity of extension sleeve is equipped with
Telescopic rod, the bottom of extension sleeve are movably installed with regulation cock, and the bottom of extension sleeve is fixedly installed with connecting rod, and connecting rod
Positioned at the side of regulation cock.
Preferably, the inside of the positioning component is fixedly installed with positioning seat, and the two sides inside positioning seat are all fixedly installed
There is location hole, the two sides at the top of positioning seat are all fixedly installed with locating rod.
Preferably, cross bar has been mounted equidistant in the inside of the fixation kit, and the two sides of cross bar one end all pass through screw activity
Vertical bar is installed.
Preferably, the surface of the door body is fixedly installed observation window, and the side of observation window is fixedly installed with handle, observation
The bottom of window has been placed equidistant with heat release hole.
Compared with prior art, the beneficial effects of the present invention are: the hydraulic engineering water level alarm is by being equipped with
Telescopic component can be adjusted the length of telescopic rod using regulation cock, staff is facilitated to carry out using by being equipped with rotating group
Part can be adjusted the angle of solar panel, staff is facilitated to be adjusted, by being equipped with fixation kit,
Shell can be fixed, improve the stability of shell, it, can be logical using microwave pulse by being equipped with radar type water-level gauge
It crosses antenna to emit and receive, radar wave is run with the light velocity, and runing time can be converted into water level signal one by electronic component
The special time extension method of kind may insure stable and accurate measurement in very short time, by being equipped with positioning component, energy
Enough the present apparatus is supported using location hole, improves the stability of the present apparatus, it, can by being equipped with low-power consumption detection and control terminal
Radar signal is acquired, and the monitoring to water level is completed in transmission.
3, dual radars that are scalable and doing circular scanning campaign are popped one's head on the basis of realizing water surface liquid level precise measurement, also
It can be realized the measurement of wind speed or flow direction and provide the redundancy of renewable energy the way of production, it is reliable to greatly improve system
Property.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is main view of the invention；
Fig. 3 is telescopic component partial structural diagram of the invention；
Fig. 4 is fixation kit partial structural diagram of the invention.
In figure: 1, solar panel；2, runner assembly；201, shaft；202, rotating bar；203, fixing bolt；3, radar
Formula water-level gauge；4, solar charging controller；5, low-power consumption detection and control terminal；6, battery；7, pillar；8, positioning component；801,
Positioning seat；802, locating rod；803, location hole；9, telescopic component；901, telescopic rod；902, extension sleeve；903, regulation cock；
904, connecting rod；10, shell；11, fixation kit；1101, cross bar；1102, screw；1103, vertical bar；12, door body；1201, it sees
Examine window；1202, handle；1203, heat release hole；13, loudspeaker.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " on ", "lower", "inner", "outside" " front end ", " rear end ",
The orientation or positional relationship of the instructions such as " both ends ", " one end ", " other end " is to be based on the orientation or positional relationship shown in the drawings, only
It is that for the convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning must have specifically
Orientation is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " the
Two " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation " " is set
Be equipped with ", " connection " etc., shall be understood in a broad sense, such as " connection ", may be a fixed connection, may be a detachable connection or one
Connect to body；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirect by intermediary
It is connected, can be the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
First embodiment: please refer to Fig. 1-4, a kind of embodiment provided by the invention: a kind of hydraulic engineering is alert with water level
Reporting device, including runner assembly 2, radar type water-level gauge 3 and positioning component 8, the top of positioning component 8 are fixedly installed with pillar 7,
The surface activity of pillar 7 is equipped with fixation kit 11, and shell 10 can be fixed in fixation kit 11, improves the steady of shell 10
Qualitative, the surface activity of fixation kit 11 is equipped with shell 10, and the inside of shell 10 is fixedly installed with solar charging controller
4, solar charging controller 4 is electrically connected by conducting wire with solar panel 1, the solar charging controller 4
Model can be DL-12/24-10a12 sun charge controller, and the bottom of solar charging controller 4 is fixedly installed with low-power consumption
Detection and control terminal 5, low-power consumption detection and control terminal 5 are electrically connected by conducting wire with battery 6, the type of the low-power consumption detection and control terminal 5
Number can be DATA-7311 low-power consumption detection and control terminal, 5 end of low-power consumption detection and control terminal have data acquisition, control, GPRS wireless remote
Communication etc. functions, using low power dissipation design, the product can access various serial ports instrument, various analog signal outputs transmitter,
Rainfall gauge, water meter of various output of pulse signal etc. are widely used in water utilities, environmental protection, meteorology, municipal administration, environment, geology, agricultural, public affairs
The industries remote monitoring systems such as peace can substantially reduce solar powered especially suitable for the field application of solar powered mode
Cost, the bottom of low-power consumption detection and control terminal 5 are fixedly installed with battery 6, battery 6 by conducting wire and solar panel 1 into
Row is electrically connected, and the model of the battery 6 can be 6-CNJ-120 solar storage battery, and solar storage battery 6 is in solar energy
Application in volt power generation, is well suited for the solar power supply system for reliable performance, especially unattended work station compares
Good deeper cavity ability has and overcharges well and over-discharge ability, long-life, special technological design and colloidal electrolyte guarantee
Long-life batteries, the surface of shell 10 is equipped with door body 12 by articulate, and the top of pillar 7 is fixedly installed loudspeaker
13, loudspeaker 13 are electrically connected by conducting wire with radar type water-level gauge 3, and loudspeaker 13 are the electroacoustic components in modern times, effect be by
Electric signal is converted to sound, is also loudspeaker, may further be used to describe the people for advertising, publicizing for people, the two sides of loudspeaker 13 are all fixed
Telescopic component 9 is installed, telescopic component 9 can adjust the length of telescopic rod 901 using regulation cock 903, facilitate staff into
It exercises and uses, the side of telescopic component 9 is all fixedly installed with radar type water-level gauge 3, and radar type water-level gauge 3 passes through conducting wire and low-power consumption
Detection and control terminal 5 is electrically connected, and the model of the radar type water-level gauge 3 can be BRL500 radar type water-level gauge, radar type water level
Meter 3 can be emitted and be received by antenna using microwave pulse, and radar wave is run with the light velocity, and runing time can pass through the ministry of electronics industry
Part, which is converted into a kind of special time extension method of water level signal, may insure stable and accurate measurement in very short time, stretch
The top of contracting component 9 is all fixedly installed with runner assembly 2, and runner assembly 2 can adjust the angle of solar panel 1
Section, facilitates staff to be adjusted, the top of runner assembly 2 is fixedly installed with solar panel 1, solar panel 1
It is electrically connected by conducting wire and battery 6, solar panel 1 absorbs sunlight, and solar radiant energy is imitated by photoelectricity
It answers or photochemical effect is converted directly or indirectly into the device of electric energy.
Further, the inside of runner assembly 2 is fixedly installed with shaft 201, and the both ends of shaft 201 are all movably installed with rotation
Bar 202, the side of shaft 201 are movably installed with fixing bolt 203, when the present apparatus is worked, using fixing bolt 203 to turn
The limit of axis 201, the angle that rotating bar 202 is able to drive solar panel 1 are adjusted.
Further, the inside of telescopic component 9 is fixedly installed extension sleeve 902, the internal activity installation of extension sleeve 902
There is telescopic rod 901, the bottom of extension sleeve 902 is movably installed with regulation cock 903, and the bottom of extension sleeve 902 is fixedly installed with
Connecting rod 904, and connecting rod 904 is located at the side of regulation cock 903, when the present apparatus is worked, adjusts using regulation cock 903
The length of section telescopic bar 901 makes telescopic rod 901 that radar type water-level gauge 3 be driven to be moved.
Further, the inside of positioning component 8 is fixedly installed with positioning seat 801, and all fixations of the two sides inside positioning seat 801 are set
It is equipped with location hole 803, the two sides at 801 top of positioning seat are all fixedly installed with locating rod 802, can when the present apparatus is worked
The present apparatus is positioned using location hole 803, improves the stability of the present apparatus.
Further, cross bar 1101 has been mounted equidistant in the inside of fixation kit 11, and the two sides of 1101 one end of cross bar all pass through spiral shell
Nail 1102 is movably installed with vertical bar 1103, when the present apparatus is worked, using cross bar 1101 and vertical bar 1103 to shell 10
It is positioned and is supported.
Further, the surface of door body 12 is fixedly installed observation window 1201, and the side of observation window 1201 is fixedly installed with handle
Hand 1202, the bottom of observation window 1201 have been placed equidistant with heat release hole 1203, when the present apparatus is worked, using handle 1202
It opens door body 12 and service work is carried out to the electric elements inside shell 10.
Working principle: using before the present apparatus, user of service first detects device, after confirming that there is no problem, in use,
The present apparatus is positioned first with positioning component 8, adjusts 3 position of radar type water-level gauge followed by telescopic component 9, it is then sharp
The angle of solar panel 1 is adjusted with runner assembly 2, and the height of water level is finally measured using radar type water-level gauge 3, works as water level
When excessively high, alarm using loudspeaker 13.
Second embodiment: a kind of hydraulic engineering water level alarm, including runner assembly 2,3 and of radar type water-level gauge
Positioning component 8, it is characterised in that: the top of the positioning component 8 is fixedly installed with pillar 7, the surface activity peace of the pillar 7
Equipped with fixation kit 11, the surface activity of the fixation kit 11 is equipped with shell 10, and the inside of the shell 10 is fixedly mounted
There is solar charging controller, the bottom of the solar charging controller is fixedly installed with low-power consumption detection and control terminal, described low
The bottom of power consumption measuring and control terminal is fixedly installed with battery, and the surface of the shell is equipped with door body by articulate, described
The top of pillar 7 is fixedly installed loudspeaker, and the two sides of the loudspeaker are equipped with telescopic component 9, the two side ends of the telescopic component 9
Portion is fixedly installed with a radar type water-level gauge, and the top of the telescopic component 9 is all fixedly installed with runner assembly 2, and described turn
The top of dynamic component 2 is fixedly installed with solar panel 1；The inside of the runner assembly is fixedly installed with shaft, shaft
Both ends are all movably installed with rotating bar, and the side of shaft is movably installed with fixing bolt；
Wherein telescopic component 9 is supported by the disk that a bottom is provided with the non-hollow out groove of annular, wherein the top of pillar 7
Multiple inclined shore bars at edge, inclined shore bar are embedded into the non-hollow out groove of the annular by idler wheel, the top of pillar 7
It is provided with a shaft being connected at the circle disk center, which is connected to driving motor by electric control clutch, wherein driving
Dynamic motor is arranged on pillar 7, and the inside of the telescopic component is fixedly installed extension sleeve, and extension sleeve is electric-controlled hydraulic drive
Ejector half and work is in Three models: under timing acquiring mode, idle operating mode, wherein in the timing mode, electric control clutch
Open, driving motor start and by shaft drive disk, telescopic component 9 and thereon solar panel 1 synchronous rotation,
In the rotation process, extension sleeve is synchronous to open expanding-contracting action, so that two radar type water-level gauges 3 are directed away from 7 direction of pillar
It moves towards, in and rotation process flexible in the radar type water-level gauge 3, is executed after 360 ° or N*360 ° of disk rotational outward
Expanding-contracting action, wherein N is integer, and radar type water-level gauge 3 acquires water level with the first higher frequency interval, and utilizes encoder
Record the absolute rotation angle position of the radar type water-level gauge at each collection point water level；
Under idle mode, electric control clutch is closed, and driving motor remains turned-off and extension sleeve is remain stationary, thus
Under external wind drives, solar panel 1 freely rotates with the wind, thus drive disk and radar type water-level gauge 3 thereon from
By rotating, radar type water-level gauge 3 with the second higher frequency interval acquire water level, wherein the second higher frequency gap periods be less than in
First frequency interval.
In this embodiment, compared with the rotation mode of radar type water-level gauge 3 is increased in first embodiment, to realize
The measurement of each wind speed and direction, and realize under each wind speed and direction the accurate measurement of liquid level, specific work process is as follows:
When with biggish sea wind, water level alarm uses timing acquiring mode, in the mode first extension sleeve move to it is most short,
Electric control clutch is opened, and driving motor start and by shaft drive disk, telescopic component 9 and solar panel 1 thereon
It rotates synchronously, in the rotation process, extension sleeve is synchronous to open expanding-contracting action, so that two radar type water-level gauges 3 are towards remote
It is moved towards outward from 7 direction of pillar, in and rotation process flexible in the radar type water-level gauge 3, radar type water-level gauge 3 is with first
Higher frequency interval acquires water level, and the absolute rotation of the radar type water-level gauge at each collection point water level is recorded using encoder
Angle Position, after obtaining multiple groups sampled point water level, wherein the radar type water for being 180 ° for two phase differences in every group of sampled data
The output data (A1, A2) of position meter, and within the scope of each swing circle i.e. 360 °, the difference of A1-A2 is calculated in real time, when the difference
The position of two radar type water-level gauge rotation angles when value is maximum, i.e. the line rectilinear direction of two radar type water-level gauges at this time
For wind direction, and lesser one in the A1 and A2 with maximum difference is the source direction of wind, at this time two radar type water levels
Linear distance between meter, and it is flexible after two water-level gauges between length it is corresponding with the size of ripple, and the size pair of ripple
Wind-force is answered, because water surface ripple is that have periodically, and with wind speed when sea wind drives the water surface to generate fluctuation
The ripple for the waters surface that difference generates it is of different sizes, i.e. the cycle length of ripple is different, therefore wind speed and wind-force may be implemented
It measures simultaneously.
When encountering rainy weather, the electric power of solar panels is insufficient, electric control clutch can be closed, so that at solar panels
In the mode that is freely rotated, the rotation of solar panels can produce part electricity at this time.
Under idle mode, electric control clutch is closed, and driving motor remains turned-off and extension sleeve is remain stationary, thus
Under external wind drive, solar panel 1 freely rotates with the wind, to drive disk and radar type water-level gauge 3 thereon
It is freely rotated, radar type water-level gauge 3 acquires water level with the second higher frequency interval, wherein the second higher frequency gap periods are less than
In first frequency interval.At this time can be taken after obtaining multiple groups sampled data count mean value can liquid level, and solar panels
Revolving speed is wind speed.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
Claims (4)
1. a kind of hydraulic engineering water level alarm, including runner assembly (2), radar type water-level gauge (3) and positioning component
(8), it is characterised in that: be fixedly installed with pillar (7) at the top of the positioning component (8), the surface activity peace of the pillar (7)
Equipped with fixation kit (11), the surface activity of the fixation kit (11) is equipped with shell (10), the inside of the shell (10)
It is fixedly installed with solar charging controller, it is whole that the bottom of the solar charging controller is fixedly installed with low-power consumption observing and controlling
End, the bottom of the low-power consumption detection and control terminal are fixedly installed with battery, and the surface of the shell is equipped with by articulate
Door body is fixedly installed loudspeaker at the top of the pillar (7), and the two sides of the loudspeaker are equipped with telescopic component (9), described flexible
The both side ends of component (9) are fixedly installed with a radar type water-level gauge, and the top of the telescopic component (9) is all fixedly installed with
Runner assembly (2) is fixedly installed with solar panel (1) at the top of the runner assembly (2)；The inside of the runner assembly
It is fixedly installed with shaft, the both ends of shaft are all movably installed with rotating bar, and the side of shaft is movably installed with fixing bolt；
Wherein telescopic component (9) is supported by the disk that a bottom is provided with the non-hollow out groove of annular, wherein the top of pillar (7)
Multiple inclined shore bars at edge, inclined shore bar are embedded into the non-hollow out groove of the annular by idler wheel, the top of pillar (7)
End is provided with a shaft being connected at the circle disk center, which is connected to driving motor by electric control clutch, wherein
Driving motor is arranged on pillar (7), and the inside of the telescopic component is fixedly installed extension sleeve, and extension sleeve is automatically controlled liquid
Press driving and work in both modes: timing acquiring mode, idle operating mode；
Wherein in timing mode, electric control clutch is opened, and driving motor starts and drives disk, telescopic component (9) by shaft
And solar panel (1) thereon rotates synchronously, in the rotation process, extension sleeve is synchronous to open expanding-contracting action, so that
Two radar type water-level gauges (3) are directed away from pillar (7) direction and move towards outward, it is flexible in the radar type water-level gauge (3) and
In rotation process, an expanding-contracting action is executed after 360 ° or N*360 ° of disk rotational, wherein N is integer, circumference radar type
Water-level gauge (3) acquires water level with the first higher frequency interval, and records the radar type at each collection point water level using encoder
The absolute rotation angle position of water-level gauge；
Under idle mode, electric control clutch is closed, and driving motor remains turned-off and extension sleeve is remain stationary, thus in outside
Under wind-force drives, solar panel (1) freely rotates with the wind, thus drive disk and radar type water-level gauge (3) thereon from
By rotating, radar type water-level gauge (3) acquires water level with the second higher frequency interval, wherein the second higher frequency gap periods are less than
In first frequency interval.
2. a kind of hydraulic engineering water level alarm according to claim 1, it is characterised in that: the positioning component
Inside is fixedly installed with positioning seat, and the two sides inside positioning seat are all fixedly installed location hole, and the two sides at the top of positioning seat are all solid
Dingan County is equipped with locating rod.
3. a kind of hydraulic engineering water level alarm according to claim 1, it is characterised in that: the fixation kit
Cross bar has been mounted equidistant in inside, and the two sides of cross bar one end all pass through screw and are movably installed with vertical bar.
4. a kind of hydraulic engineering water level alarm according to claim 1, it is characterised in that: the surface of the door body
It is fixedly installed observation window, the side of observation window is fixedly installed with handle, and the bottom of observation window has been placed equidistant with heat release hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910243969.4A CN109813391A (en) | 2019-03-28 | 2019-03-28 | A kind of hydraulic engineering water level alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910243969.4A CN109813391A (en) | 2019-03-28 | 2019-03-28 | A kind of hydraulic engineering water level alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109813391A true CN109813391A (en) | 2019-05-28 |
Family
ID=66610839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910243969.4A Withdrawn CN109813391A (en) | 2019-03-28 | 2019-03-28 | A kind of hydraulic engineering water level alarm |
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| CN (1) | CN109813391A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110068380A (en) * | 2019-05-13 | 2019-07-30 | 杨德宝 | A kind of hydraulic engineering water level alarm |
| CN110632964A (en) * | 2019-09-20 | 2019-12-31 | 河北地质大学 | Intelligent agricultural monitoring device of thing networking |
| CN112857526A (en) * | 2021-01-08 | 2021-05-28 | 董哲 | Water level monitoring device for hydraulic engineering |
-
2019
- 2019-03-28 CN CN201910243969.4A patent/CN109813391A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110068380A (en) * | 2019-05-13 | 2019-07-30 | 杨德宝 | A kind of hydraulic engineering water level alarm |
| CN110632964A (en) * | 2019-09-20 | 2019-12-31 | 河北地质大学 | Intelligent agricultural monitoring device of thing networking |
| CN112857526A (en) * | 2021-01-08 | 2021-05-28 | 董哲 | Water level monitoring device for hydraulic engineering |
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Application publication date: 20190528 |
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