CN110361075A - A kind of safety monitoring system based on Beidou navigation satellite - Google Patents
A kind of safety monitoring system based on Beidou navigation satellite Download PDFInfo
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- CN110361075A CN110361075A CN201910759420.0A CN201910759420A CN110361075A CN 110361075 A CN110361075 A CN 110361075A CN 201910759420 A CN201910759420 A CN 201910759420A CN 110361075 A CN110361075 A CN 110361075A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 52
- 238000001514 detection method Methods 0.000 claims abstract description 85
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 238000005192 partition Methods 0.000 claims description 7
- 230000000007 visual effect Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- 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
- G01F23/30—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 floats
- G01F23/56—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 floats using elements rigidly fixed to, and rectilinearly moving with, the floats as transmission elements
- G01F23/58—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 floats using elements rigidly fixed to, and rectilinearly moving with, the floats as transmission elements using mechanically actuated indicating means
Abstract
The present invention relates to monitoring technical fields, especially a kind of safety monitoring system based on Beidou navigation satellite, including dam stake, water level detecting mechanism and Beidou mechanism for monitoring, dam stake surface is equipped with annular groove, annular rooved face fixing sleeve is equipped with sleeve, turn trough is equipped with inside cartridges sides, turn trough surface is equipped with multiple threaded holes.The present invention is novel by installing water level detecting case in the dam stake of dam, buoy and counterweight are set in detection case, buoy will be jacked up when water level rises, to drive the swing arm for being connected with roller to swing, roller can directly observe position of the roller in No. two detection plates after moving up, related data can be read, the line number that also observable connecting rope is wound in shaft simultaneously, the change of same observation graduation mark obtains height of water level, the precision of whole detection SEA LEVEL VARIATION is higher, and Beidou Navigation System is annexed, it can be achieved that long-range monitoring, practicability are higher simultaneously.
Description
Technical field
The present invention relates to monitoring technical field more particularly to a kind of safety monitoring systems based on Beidou navigation satellite.
Background technique
Dam is block rivers ditch water flow with raising of water level or the water retaining structure of adjusting flow.Reservoir can be formed, is lifted
High water level, concentrates head at regulated flow, for flood control, water supply, irrigation, hydroelectric generation, improvement shipping etc., existing dam water
Position monitoring precision is not high, the height number variation of water level cannot be measured from multi-angle, while control and monitoring are inadequate, can not achieve
Long-range monitoring.
Summary of the invention
The purpose of the present invention is to solve disadvantages existing in the prior art, and the one kind proposed is defended based on Beidou navigation
The safety monitoring system of star.
To achieve the goals above, present invention employs following technical solutions:
Design a kind of safety monitoring system based on Beidou navigation satellite, including dam stake, water level detecting mechanism and Beidou prison
Mechanism is surveyed, dam stake surface is equipped with annular groove, and the annular rooved face fixing sleeve is equipped with sleeve, sets inside the cartridges sides
Have a turn trough, the turn trough surface is equipped with multiple threaded holes, the turn trough surface pass through two fastening bolts and sleeve wherein two
A threaded hole is removably connected with turntable, and the turntable side is equipped with water level detecting mechanism, and the water level detecting mechanism is by detecting
Case, No.1 detection plate, No. two detection plate compositions, the detection case are fixedly connected on the side of turntable, the detection case internal water
It is flat to be fixedly connected with fagging, it is vertical between the bottom surface middle and detection case inner bottom surface of the fagging to be fixedly connected with partition, institute
The upper surface middle for stating fagging is fixedly connected with No.1 detection plate, and No.1 detection plate top internal activity, which is connected with, to be turned
Axis, the shaft is through No.1 detection plate and is located at No.1 detection plate one end fixing sleeve equipped with swing arm.
Preferably, the swing arm both ends are hinged with connecting rod, and two connecting rods run through fagging and are located at fagging bottom surface
One end be respectively fixedly connected with buoy and counterweight, the other side of the No.1 detection plate far from swing arm and be located at shaft outer ring
Equipped with No.1 through-hole, the No.1 detection plate is located at shaft No.1 through-hole and is arranged right below No. two through-holes, in No. two through-holes
Portion is connected with spool, and the spool surface is wound with connecting rope, and the port of the connecting rope is connected to shaft surface, described
Detection case bottom end and it is located at fixed immediately below buoy and through being connected with water inlet pipe, top and is located at buoy one in the detection case
Side is fixedly connected with driver plate, and the driver plate side is fixedly connected with No. two detection plates, the driver plate and No. two detection plates
Inside is respectively equipped with No.1 arc chute and No. two arc chutes, runs through between the No.1 arc chute and No. two arc chutes
And roller is slidably connected, the surface that the roller is located at No.1 arc chute side is fixedly connected on swing arm by connecting shaft
On.
Preferably, the detection case top is equipped with Beidou mechanism for monitoring, and the Beidou mechanism for monitoring is controlled by remote terminal
Unit, charge controller, battery, photovoltaic solar panel, combined aural and visual alarm, camera and antenna composition, the detection case
Side upper end far from dam stake is fixedly connected with L-type connecting plate, and the inner top surface of the L-type connecting plate is fixedly connected with camera,
The medial surface of the L-type connecting plate is fixedly connected with combined aural and visual alarm, and the outer top surface of the L-type connecting plate is fixedly connected with antenna,
The detection case top surface is fixedly connected with monitoring case, and one end is fixedly connected with remote terminal control unit inside the monitoring case,
Remote terminal control unit side is electrically connected with charge controller, and the charge controller controls single far from remote terminal
The side of member is electrically connected with battery, and the outer top surface of the monitoring case, which is fixed by the bracket, is connected with photovoltaic solar panel.
Preferably, the both ends that the fagging is located at partition are equipped with perforation, and the aperture of two perforation is greater than two
The diameter of connecting rod.
Preferably, the water inlet pipe outer ring and it is located at fixing sleeve on detection case and is equipped with strainer, and is solid inside the water inlet pipe
Surely be connected with multiple inclined plates, and the aperture that each inclined plate is formed downward, macropore upward.
Preferably, it is carved on the lateral surface of the No.1 detection plate and positioned at the No.1 that No.1 through-hole side is equipped with row longitudinal direction
Line is spent, on the lateral surface of No. two detection plates and is located at No. two graduation marks that No. two arc chute sides are equipped with row longitudinal direction.
Preferably, the driver plate is connect with No. two detection plates side and it is located at No.1 arc chute and No. two arcs are sliding
Arcuate socket is equipped between slot, and No. two arc chutes run through No. two detection plates.
Preferably, side of the driver plate towards swing arm is in arc-shaped, and the arc-shaped side radius of the driver plate
Equal to the half of pendulum arm length.
A kind of safety monitoring system based on Beidou navigation satellite proposed by the present invention, beneficial effect are: the present invention is new
Buoy and counterweight is arranged by installing water level detecting case in the dam stake of dam in type in detection case, just when water level rises
Buoy can be jacked up, so that the swing arm for being connected with roller be driven to swing, roller can directly observe roller in No. two detection plates after moving up
On position, related data can be read, while the line number that also observable connecting rope is wound in shaft, equally observation graduation mark
Change obtain height of water level, the precision of whole detection SEA LEVEL VARIATION is higher, and annex Beidou Navigation System simultaneously, it can be achieved that
Long-range monitoring, practicability are higher.
Detailed description of the invention
Fig. 1 is a kind of safety monitoring system structural schematic diagram based on Beidou navigation satellite proposed by the present invention；
Fig. 2 is a kind of safety monitoring system turntable structure schematic diagram based on Beidou navigation satellite proposed by the present invention；
Fig. 3 is a kind of safety monitoring system water inlet pipe cross-sectional view based on Beidou navigation satellite proposed by the present invention；
Fig. 4 is a kind of safety monitoring system No.1 detection plate rearview based on Beidou navigation satellite proposed by the present invention；
Fig. 5 is No. two detection plate rearviews of a kind of safety monitoring system based on Beidou navigation satellite proposed by the present invention；
Fig. 6 is a kind of enlarged drawing of the safety monitoring system A based on Beidou navigation satellite proposed by the present invention；
Fig. 7 is a kind of safety monitoring system driver plate structural schematic diagram based on Beidou navigation satellite proposed by the present invention；
Fig. 8 is a kind of safety monitoring system module map based on Beidou navigation satellite proposed by the present invention.
In figure: 1, dam stake；11, annular groove；12, sleeve；13, turntable；14, fastening bolt；15, turn trough；16, threaded hole；
2, water level detecting mechanism；21, detection case；22, water inlet pipe；23, strainer；24, fagging；25, No.1 detection plate；26, shaft；27,
Swing arm；28, connecting rod；29, it perforates；210, buoy；211, counterweight；212, driver plate；213, No.1 arc chute；214, tiltedly
Plate；215, No.1 through-hole；216, partition；217, connecting rope；218, No.1 graduation mark；219, No. two through-holes；220, spool；221,
Roller；222, arcuate socket；223, No. two detection plates；224, No. two arc chutes；225, No. two graduation marks；3, Beidou monitoring machine
Structure；31, monitoring case；32, remote terminal control unit；33, charge controller；34, battery；35, photovoltaic solar panel；36,L
Type connecting plate；37, combined aural and visual alarm；38, camera；39, antenna.
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.
Referring to Fig.1-8, a kind of safety monitoring system based on Beidou navigation satellite, including dam stake 1, water level detecting mechanism 2
With Beidou mechanism for monitoring 3,1 surface of dam stake is equipped with annular groove 11, and the 11 surface fixing sleeve of annular groove is equipped with sleeve 12,
12 lateral inner of sleeve is equipped with turn trough 15, and 15 surface of turn trough is equipped with multiple threaded holes 16, and 15 surface of turn trough is logical
The two of them threaded hole 16 for crossing two fastening bolts 14 and sleeve 12 is removably connected with turntable 13, and 13 side of turntable is set
There is water level detecting mechanism 2, the water level detecting mechanism 2 is made of 25, No. two detection case 21, No.1 detection plate detection plates 223, institute
The side that detection case 21 is fixedly connected on turntable 13 is stated, 21 inner horizontal of detection case is fixedly connected with fagging 24, the support
It is vertical between the bottom surface middle of plate 24 and 21 inner bottom surface of detection case to be fixedly connected with partition 216, the upper surface of the fagging 24
Middle is fixedly connected with No.1 detection plate 25, and the 25 top internal activity of No.1 detection plate is connected with shaft 26, and described turn
Axis 26 is through No.1 detection plate 25 and is located at 25 one end fixing sleeve of No.1 detection plate equipped with swing arm 27.
Wherein, 27 both ends of swing arm are hinged with connecting rod 28, and two connecting rods 28 through fagging 24 and are located at support
One end of 24 bottom surface of plate has been respectively fixedly connected with buoy 210 and counterweight 211, and the No.1 detection plate 25 is far from the another of swing arm 27
Side and it is located at 26 outer ring of shaft and is equipped with No.1 through-hole 215, the No.1 detection plate 25 is being located at 26 No.1 through-hole 215 of shaft just
Lower section is equipped with No. two through-holes 219, and 219 internal activity of No. two through-holes is connected with spool 220,220 surface wrap of spool
There is a connecting rope 217, the port of the connecting rope 217 is connected to 26 surface of shaft, 21 bottom end of detection case and is located at buoy 210
Underface fixation and through being connected with water inlet pipe 22 top and is located at 210 side of buoy and is fixedly connected in the detection case 21
Driver plate 212,212 side of driver plate are fixedly connected with No. two detection plates 223, the driver plate 212 and No. two detection plates
No.1 arc chute 213 and No. two arc chutes 224, the No.1 arc chute 213 and No. two arcs are respectively equipped with inside 223
Run through and slidably connect roller 221 between shape sliding slot 224, the roller 221 is located at the table of 213 side of No.1 arc chute
Face is fixedly connected in swing arm 27 by connecting shaft.
Wherein, 21 top of detection case is equipped with Beidou mechanism for monitoring 3, and the Beidou mechanism for monitoring 3 is by remote terminal control
Unit 32, charge controller 33, battery 34, photovoltaic solar panel 35, combined aural and visual alarm 37, camera 38 and antenna 39 processed
Composition, the detection case 21 are fixedly connected with L-type connecting plate 36 far from the side upper end of dam stake 1, the L-type connecting plate 36 it is interior
Top surface is fixedly connected with camera 38, and the medial surface of the L-type connecting plate 36 is fixedly connected with combined aural and visual alarm 37, the L-type
The outer top surface of connecting plate 36 is fixedly connected with antenna 39, and 21 top surface of detection case is fixedly connected with monitoring case 31, the monitoring case
31 inside one end are fixedly connected with remote terminal control unit 32, and 32 side of remote terminal control unit is electrically connected with
Charge controller 33, the charge controller 33 are electrically connected with battery 34 far from the side of remote terminal control unit 32,
The outer top surface of the monitoring case 31, which is fixed by the bracket, is connected with photovoltaic solar panel 35.
Wherein, the both ends that the fagging 24 is located at partition 216 are equipped with perforation 29, and the aperture of two perforation 29 is big
In the diameter of two connecting rods 28, moved up and down in the perforation 29 of fagging 24 convenient for two connecting rods 28.
Wherein, 22 outer ring of water inlet pipe and it is located at fixing sleeve on detection case 21 and is equipped with strainer 23, and the water inlet pipe 22
Inside is fixedly connected with multiple inclined plates 214, and the aperture that each inclined plate 214 is formed downward, macropore upward, play resistance
Every effect, mud and the biology of water plant class is avoided to enter in detection case 21.
Wherein, longitudinal one of a row is equipped on the lateral surface of the No.1 detection plate 25 and positioned at 215 side of No.1 through-hole
Number graduation mark 218 on the lateral surface of No. two detection plates 223 and is located at No. two 224 sides of arc chute to be equipped with a row longitudinal
No. two graduation marks 225, convenient for the height of water level for observing by the naked eye data to judge dam.
Wherein, the driver plate 212 is connect with No. two detection plates 223 side and it is located at No.1 arc chute 213 and two
It is equipped with arcuate socket 222 between number arc chute 224, and No. two arc chutes 224 run through No. two detection plates 223, is convenient for two
The use of number detection plate 223.
Wherein, side of the driver plate 212 towards swing arm 27 is in arc-shaped, and the arc-shaped side of the driver plate 212
Radius surface is equal to the half of 27 length of swing arm, convenient for driving roller 221 in No. two detection plates 223 by the rotation of swing arm 27
Upper movement, to further accurately read height of water level.
Working principle: guaranteeing the counterweight of buoy 210 first, guarantees and forms balance between counterweight 211, when water level rises
When, the water surface can be by the way that in 22 flow detection case 21 of water inlet pipe, with the raising of water level, buoy 210 will receive buoyancy rising, simultaneously
Counterweight 211 declines, at the same time, the swing arm 27 of 210 side of buoy will drive roller 221 in No.1 arc chute 213 and
It is moved up in No. two arc chutes 224, observer can read roller 221 by No. two graduation marks 225 in No. two detection plates 223
The height of rising may know that the height that buoy 210 rises, as water level lifting height, while when the swing of swing arm 27, also can band
Turn axis 26 rotates, the thickness that observer can be wound in shaft 26 by observing connecting rope 217, directly observation No.1 graduation mark
218 variation can also obtain SEA LEVEL VARIATION height, compared by two, so that water level detecting is more accurate, in addition can pass through Beidou
Navigation system monitors dam using unmanned plane, and camera 38 and combined aural and visual alarm 37 transmit data under communication module,
Monitoring base station can obtain corresponding data, realize long-range monitoring.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (8)
1. a kind of safety monitoring system based on Beidou navigation satellite, including dam stake (1), water level detecting mechanism (2) and Beidou prison
It surveys mechanism (3), it is characterised in that: dam stake (1) surface is equipped with annular groove (11), and annular groove (11) the surface fixation is arranged
Have sleeve (12), sleeve (12) lateral inner is equipped with turn trough (15), and turn trough (15) surface is equipped with multiple threaded holes
(16), turn trough (15) surface is detachable by the two of them threaded hole (16) of two fastening bolts (14) and sleeve (12)
It is connected with turntable (13), turntable (13) side is equipped with water level detecting mechanism (2), and the water level detecting mechanism (2) is by detecting
Case (21), No.1 detection plate (25), No. two detection plate (223) compositions, the detection case (21) are fixedly connected on turntable (13)
Side, detection case (21) inner horizontal are fixedly connected with fagging (24), the bottom surface middle of the fagging (24) and detection
It is vertically fixedly connected with partition (216) between case (21) inner bottom surface, the upper surface middle of the fagging (24) is fixedly connected with
No.1 detection plate (25), No.1 detection plate (25) top internal activity are connected with shaft (26), and the shaft (26) is run through
No.1 detection plate (25) and be located at No.1 detection plate (25) one end fixing sleeve be equipped with swing arm (27).
2. a kind of safety monitoring system based on Beidou navigation satellite according to claim 1, it is characterised in that: the pendulum
Arm (27) both ends are hinged with connecting rod (28), and two connecting rods (28) through fagging (24) and are located at fagging (24) bottom surface
One end has been respectively fixedly connected with buoy (210) and counterweight (211), and the No.1 detection plate (25) is another far from swing arm (27)
Side and it is located at shaft (26) outer ring and is equipped with No.1 through-hole (215), the No.1 detection plate (25) is located at shaft (26) No.1 through-hole
(215) No. two through-holes (219) are arranged right below, No. two through-holes (219) internal activity is connected with spool (220), the line
Axis (220) surface wrap has connecting rope (217), and the port of the connecting rope (217) is connected to shaft (26) surface, the detection
Case (21) bottom end and it is located at fixed immediately below buoy (210) and through being connected with water inlet pipe (22), top in the detection case (21)
It holds and is located at buoy (210) side and be fixedly connected with driver plate (212), driver plate (212) side is fixedly connected with No. two
No.1 arc chute (213) and two are respectively equipped with inside detection plate (223), the driver plate (212) and No. two detection plates (223)
Number arc chute (224), runs through and slidably connects between the No.1 arc chute (213) and No. two arc chutes (224)
Roller (221), the surface that the roller (221) is located at No.1 arc chute (213) side are fixedly connected on pendulum by connecting shaft
On arm (27).
3. a kind of safety monitoring system based on Beidou navigation satellite according to claim 1, it is characterised in that: the inspection
Measuring tank (21) top be equipped with Beidou mechanism for monitoring (3), the Beidou mechanism for monitoring (3) by remote terminal control unit (32), fill
Electric controller (33), battery (34), photovoltaic solar panel (35), combined aural and visual alarm (37), camera (38) and antenna
(39) it forms, the detection case (21) is fixedly connected with L-type connecting plate (36) far from the side upper end of dam stake (1), and the L-type connects
The inner top surface of fishplate bar (36) is fixedly connected with camera (38), and the medial surface of the L-type connecting plate (36) is fixedly connected with acousto-optic
Alarm (37), the outer top surface of the L-type connecting plate (36) are fixedly connected with antenna (39), and detection case (21) top surface is fixed to be connected
It is connected to monitoring case (31), the internal one end of the monitoring case (31) is fixedly connected with remote terminal control unit (32), described long-range
Terminal Control Element (32) side is electrically connected with charge controller (33), and the charge controller (33) is far from remote terminal control
The side of unit (32) processed is electrically connected with battery (34), and the outer top surface of the monitoring case (31), which is fixed by the bracket, is connected with light
It lies prostrate solar panels (35).
4. a kind of safety monitoring system based on Beidou navigation satellite according to claim 1, it is characterised in that: the support
The both ends that plate (24) is located at partition (216) are equipped with perforation (29), and the aperture of two perforation (29) is greater than two connecting rods
(28) diameter.
5. a kind of safety monitoring system based on Beidou navigation satellite according to claim 2, it is characterised in that: it is described into
Water pipe (22) outer ring and be located at detection case (21) on fixing sleeve be equipped with strainer (23), and the water inlet pipe (22) inside be fixedly connected
Have multiple inclined plates (214), and each inclined plate (214) formed aperture downward, macropore upward.
6. a kind of safety monitoring system based on Beidou navigation satellite according to claim 2, it is characterised in that: described one
On the lateral surface of number detection plate (25) and it is located at the No.1 graduation mark (218) that No.1 through-hole (215) side is equipped with row longitudinal direction, institute
State on the lateral surface of No. two detection plates (223) and be located at No. two scales that No. two arc chute (224) sides are equipped with row longitudinal direction
Line (225).
7. a kind of safety monitoring system based on Beidou navigation satellite according to claim 2, it is characterised in that: the biography
Side that movable plate (212) is connect with No. two detection plates (223) and it is located at No.1 arc chute (213) and No. two arc chutes
(224) arcuate socket (222) are equipped between, and No. two arc chutes (224) run through No. two detection plates (223).
8. a kind of safety monitoring system based on Beidou navigation satellite according to claim 2, it is characterised in that: the biography
Side of the movable plate (212) towards swing arm (27) is in arc-shaped, and the arc-shaped side radius of the driver plate (212) is equal to swing arm
(27) half of length.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910759420.0A CN110361075A (en) | 2019-08-16 | 2019-08-16 | A kind of safety monitoring system based on Beidou navigation satellite |
| PCT/CN2020/094945 WO2021031660A1 (en) | 2019-08-16 | 2020-06-08 | Safety monitoring system employing beidou navigation satellite system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910759420.0A CN110361075A (en) | 2019-08-16 | 2019-08-16 | A kind of safety monitoring system based on Beidou navigation satellite |
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| Publication Number | Publication Date |
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| CN110361075A true CN110361075A (en) | 2019-10-22 |
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ID=68224763
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| CN201910759420.0A Pending CN110361075A (en) | 2019-08-16 | 2019-08-16 | A kind of safety monitoring system based on Beidou navigation satellite |
Country Status (2)
| Country | Link |
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| CN (1) | CN110361075A (en) |
| WO (1) | WO2021031660A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112284483A (en) * | 2020-10-16 | 2021-01-29 | 湖南筑升信息科技有限公司 | Water level detection device for hydraulic engineering |
| WO2021031660A1 (en) * | 2019-08-16 | 2021-02-25 | 湖南联智科技股份有限公司 | Safety monitoring system employing beidou navigation satellite system |
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| CN113029298A (en) * | 2021-03-05 | 2021-06-25 | 湖南五凌电力科技有限公司 | Water level measuring device, method and system based on Beidou technology |
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| CN112284483A (en) * | 2020-10-16 | 2021-01-29 | 湖南筑升信息科技有限公司 | Water level detection device for hydraulic engineering |
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| Publication number | Publication date |
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| WO2021031660A1 (en) | 2021-02-25 |
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