CN106643984A - Novel online underground water level monitoring and warning system and method - Google Patents
Novel online underground water level monitoring and warning system and method Download PDFInfo
- Publication number
- CN106643984A CN106643984A CN201610839528.7A CN201610839528A CN106643984A CN 106643984 A CN106643984 A CN 106643984A CN 201610839528 A CN201610839528 A CN 201610839528A CN 106643984 A CN106643984 A CN 106643984A
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- gps
- bridge
- monitoring
- antenna
- early warning
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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
- G01F23/60—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 electrically actuated indicating means
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The invention discloses a novel online underground water level monitoring and warning system and method. Floating equipment is installed in a PVC monitoring pipe, and is connected with a GPS antenna through a connecting rod. A retainer is placed on the connecting rod. The GPS antenna is connected with a bridge equipment box through cables. The bridge equipment box is electrically connected with a host computer. The host computer is electrically connected with as GSM warning device. A GPS base station is in communication with the host computer. If the preset water level variation value and variation amplitude exceed the stipulated value of the underground water level and variation amplitude, a warning is initiated by a GSM automatic short message warning device. The novel online underground water level monitoring and warning system and method has a good measurement sensitivity and safety. The GPS antenna uses a conjugate antenna, which is good in stability, high in reliability and strong in resistance to interference.
Description
Technical field
The invention belongs to civil construction project and the level of ground water Study On Intelligent Monitoring Techniques field in hydrogeological environment, especially
It is related to a kind of new level of ground water on-line monitoring and early warning system and method.
Background technology
At present, the construction and the hydrology with the development of China's basis instrument, for engineerings such as building construction, bridge, subways
GEOLOGICAL ENVIRONMENT SURVEY, will necessarily run into subsoil water, the change of level of ground water to the excavation of foundation pit and environmental effect of these engineerings compared with
Greatly, and workmen and equipment safety are had a strong impact on, therefore, national regulation requires to be monitored level of ground water.
For the monitoring of level of ground water or using traditional monitoring method, not only monitoring accuracy is low, and need for China
Substantial amounts of manpower and materials are spent, and continuous uninterrupted monitoring can not be carried out, degree of intelligence is low, wastes time and energy.
The content of the invention
It is an object of the invention to provide a kind of new level of ground water on-line monitoring and early warning system and method, it is intended to solve
Certainly current China is low for the monitoring method of level of ground water has monitoring accuracy, it is impossible to carry out continuous uninterrupted monitoring, intelligence
Low degree, the problem for wasting time and energy.
The present invention is achieved in that a kind of new level of ground water on-line monitoring and early warning system, the new ground
Lower water level on-line monitoring and early warning system include PVC monitoring pipes, floatation device, stop, gps antenna, bridge equipment case, GPS
Base station, host computer, GSM alarms；
The floatation device is arranged in PVC monitoring pipes, and floatation device is connected by connecting rod with the gps antenna
Connect, stop is installed in the connecting rod；
The gps antenna is connected by cable with the bridge equipment case；
The bridge equipment case is electrically connected with the host computer, and the host computer is electrically connected with the GSM alarms；
The GPS Base Station communicates with the host computer.
Further, the GPS Base Station antenna is arranged on fixed monitoring pier, and the GPS Base Station includes gps antenna, receives
Device, bridge, with host computer RFDC is carried out.
Further, the PVC monitorings pipe is provided with the outer backfill layer of sand of pipe, drilling top backfill argillic horizon, drilling, pvc pipe；
The pvc pipe is arranged in the borehole, and the outer backfill layer of sand of pipe is arranged between the pvc pipe and drilling, and drilling top sets
Put back into and fill out argillic horizon；
PVC monitoring pipe bottom arranges the aperture of a diameter of 10mm, and aperture is arranged in plum blossom-shaped, and aperture outside is with permeable
Geotextiles are wrapped up.
Further, lockset is installed on the equipment box lid of floatation device, bridge and uninterrupted power source is installed in floatation device,
Discharging rod and antenna are installed at the top of floatation device；Described bridge be arranged on uninterrupted power source top, using electric wire with
Uninterrupted power source connects, and uninterrupted power source carries out uninterrupted power supply to bridge, and antenna is connected with bridge using cable.
A kind of new level of ground water on-line monitoring and method for early warning, the method includes：
The data for gathering are passed through satellite signal transit to computer by GPS monitoring points and GPS Base Station, using carrier phase measurement
Positioning measurement, is resolved and is observed data correction to data signal, obtains position error for millimetre-sized accuracy of observation；As in advance
SEA LEVEL VARIATION value and amplitude of variation are put, more than the subsoil water place value and amplitude of variation of regulation amplitude, GSM alarms send short automatically
Letter is reported to the police.
New level of ground water on-line monitoring and early warning system and method that the present invention is provided, test sensitive, safe and practical,
It is reliable and stable, it is simple to operate, the intelligence degree of monitoring and early warning is improve, obtain position error and can be controlled in grade, and
Round-the-clock monitoring in 24 hours and early warning can be carried out to level of ground water；Gps antenna adopts conjugate antenna, with good stability, reliability
Property the high, advantage of strong antijamming capability, can uninterruptedly receive GPS satellite data；Due to overall process be intelligent data acquisition and
Computer calculation, reduces the interference of anthropic factor, improves test effect accuracy in computation；Preset water table measure becomes
Change value and amplitude of variation, computer is contrasted by calculating, for the subsoil water place value and amplitude of variation more than certain amplitude passes through GSM
Automatic short message alarm carries out early warning, can carry out early warning to different personnel by different stage, and this is to being monitored using conventional method
And the very big improvement of early warning delay of response problem, more than 10 times of monitoring efficiency can be improved.
Description of the drawings
Fig. 1 is new level of ground water on-line monitoring provided in an embodiment of the present invention and early warning system structural representation；
Fig. 2 is PVC monitorings tubular construction schematic diagram provided in an embodiment of the present invention；
Fig. 3 is bridge equipment box structure schematic diagram provided in an embodiment of the present invention；
In figure：1st, PVC monitorings pipe；1-1, pvc pipe；The outer backfill layer of sand of 1-2, pipe；1-3, drilling top backfill argillic horizon；1-
4th, drill；2nd, flotation device；2-1, bridge；2-2, uninterrupted power source；2-3, discharging rod；2-4, antenna；2-5, equipment case lid；3、
Stop；4th, gps antenna；5th, bridge equipment case；6th, GPS Base Station；7th, host computer；8th, GSM automatic short messages alarm.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that specific embodiment described herein is not used to only to explain the present invention
Limit the present invention.
The application principle of the present invention is explained in detail below in conjunction with the accompanying drawings.
As shown in figure 1, the new level of ground water on-line monitoring and early warning system of the embodiment of the present invention include：PVC is monitored
Pipe 1, flotation device 2, stop 3, gps antenna 4, bridge equipment case 5, GPS Base Station 6, host computer 7, GSM automatic short messages are reported to the police
Device 8.
Monitor in PVC and the floatation device 2 for being provided with connecting rod is placed in pipe 1, and stop 3 and gps antenna are installed successively
4；Using the lifting situation of floatation device simulated groundwater position, when Decline or rise of groundwater level, equipment of the floatation device 2 on water level
Also lift simultaneously, connecting rod and gps antenna 4 are also together lifted, in order to ensure that connecting rod energy Vertical Free is lifted, arrange in upper end
Stop 3, stop can limit moving left and right for connecting rod, and ensure that bar can be moved freely up and down.
Gps antenna 4 is connected with cable with bridge equipment case 5, and is connected into line number with host computer 7 by communication cable
According to transmission；Gps antenna 4 adopts good stability, the strong conjugate antenna of receiving ability, gps antenna 4 that the data for gathering are passed through into bridge
The built-in bridge of equipment box enters row data communication with host computer 7.
By gps antenna 4, reception device, bridge composition, be connected with host computer 7 by cable carries out data to GPS Base Station 6
Communication；GPS Base Station antenna will be arranged on highly more than 1.5 meters of monitoring pier, and monitoring pier is made using reinforced concrete structure.
Host computer 7 is received after the data that GPS Base Station 6 and gps antenna 4 are transmitted, and data are entered using self-editing special software for calculation
Row is calculated, and ultimate principle is as follows：
GPS location is that the Distance Intersection fixed point principle in measurement is realized.In tested point Q, GPS is set,
A certain moment kt receives the signal that 3 (or more than 3) satellite 1S, 2S, 3S are sent simultaneously.By data processing and meter
Calculate, the ρ of distance 1,2 ρ, 3 ρ of the reception machine center of antenna (survey station point) to satellite can be tried to achieve.Can be found according to satellite ephemeris
The three-dimensional coordinate (Xj, Yj, Zj) of 3 satellites of moment, j=1,2,3, so as to calculated by following formula Q points three-dimensional coordinate (X, Y,
Z):
Two or more receivers are respectively disposed on different tested points, by simultaneous observation satellite-signal,
Determine the relative position of tested point, become relative localization.
For the signal that antenna is received, using carrier phase measurement positioning measurement technology, signal is resolved, it is right to carry out
Receiver clock-offsets, satellite clock correction, satellite orbital error, multipath effect, ionospheric error, tropospheric error are corrected, and
By the principle of least square either OK a karaoke club graceful filtering algorithm data are carried out in real time or post processing resolving, finally draw difference
The three-dimensional coordinate of the observation station position of time period.Constant can be considered with wherein a certain reception machine clock correction, multipath effect be with
Chance error is poor, and ionosphere and troposphere can sum up its time dependent model according to early stage observation, carries out to observation
Data are corrected.Position error so be can be obtained by millimetre-sized accuracy of observation, and 24 hours uninterrupted prisons can be implemented
Survey and early warning.Software for calculation can be with preset SEA LEVEL VARIATION value and amplitude of variation, and software for calculation is contrasted by calculating, for more than one
The subsoil water place value of tentering degree and amplitude of variation carry out early warning by GSM automatic short messages alarm 8.
As shown in Fig. 2 PVC monitoring pipes 1 include：The outer backfill layer of sand 1-2 of pvc pipe 1-1, pipe, drilling top backfill argillic horizon
1-3, drilling 1-4；Described pvc pipe 1-1 is arranged in drilling 1-4；Layer of sand 1-2 is backfilled outside described pipe and is located at drilling top go back to
Fill out argillic horizon 1-3 bottoms, pvc pipe 1-1 outsides drilling top backfill argillic horizon 1-3 thickness about 20cm；Under the PVC monitorings pipe 1
Portion arranges the aperture of a diameter of 10mm, and aperture is arranged in plum blossom-shaped, shows the anti-outside soil body and enters in pipe, and permeable soil is used in aperture outside
Work cloth is wrapped up.
As shown in figure 3, floatation device 2 is made using rustless steel, and lockset is installed on equipment case lid 2-5 with tamper-proof；
Bridge 2-1 and uninterrupted power source 2-2 is installed in floatation device, discharging rod 2-3 and antenna 2-4 is installed at the top of equipment；Institute
The bridge 2-1 for stating is arranged on the top of uninterrupted power source 2-2, is connected with uninterrupted power source 2-2 using electric wire, uninterrupted power source 2-
2 couples of bridge 2-1 carry out uninterrupted power supply；Described discharging rod 2-3 is arranged on the left side of antenna 2-4, antenna 2-4 and bridge 2-1
Connected using cable.
The operation principle of the present invention：
Sedimentation in order to monitor level of ground water of the invention, first passes through geological drilling rig and drills in monitoring stratum, drilling depth
The minimum level of ground water estimated during monitoring is greater than, PVC monitoring pipes are placed after drilling in the borehole, and it is outer in pipe with sand backfill
Side, with stationary monitoring pipe；It is highly consistent with level of ground water in order to ensure the water level in monitoring pipe, it is first in pvc pipe lower boreholes,
Simultaneously in order to prevent silt particle from entering in pipe, at the position of drilling permeable geotextiles are wrapped up.PVC monitorings are managed after embedding getting well,
The floatation device 2 for being provided with connecting rod is placed in monitoring pipe, and stop 3 and gps antenna 4 are installed successively；Using floatation device
The lifting situation of simulated groundwater position, when Decline or rise of groundwater level, equipment of the floatation device on water level is also lifted simultaneously, connection
Bar and gps antenna 4 are also together lifted, and in order to ensure that connecting rod energy Vertical Free is lifted, in upper end stop 3, stop are arranged
Moving left and right for connecting rod can be limited, and ensures that bar can be moved freely up and down.Host computer 7 receives GPS Base Station and GPS monitorings
After the data that antenna is transmitted, data are calculated using special software for calculation, software for calculation can be with preset SEA LEVEL VARIATION value
And amplitude of variation, software for calculation is contrasted by calculating, for the subsoil water place value and amplitude of variation more than certain amplitude passes through GSM
Automatic short message alarm 8 carries out early warning.
New level of ground water on-line monitoring and early warning system and method that the present invention is provided, test sensitive, safe and practical,
It is reliable and stable, it is simple to operate, the intelligence degree of monitoring and early warning is improve, obtain position error and can be controlled in grade, and
Round-the-clock monitoring in 24 hours and early warning can be carried out to level of ground water；Gps antenna adopts conjugate antenna, with good stability, reliability
Property the high, advantage of strong antijamming capability, can uninterruptedly receive GPS satellite data；Due to overall process be intelligent data acquisition and
Computer calculation, reduces the interference of anthropic factor, improves test effect accuracy in computation；Preset water table measure becomes
Change value and amplitude of variation, computer is contrasted by calculating, for the subsoil water place value and amplitude of variation more than certain amplitude passes through GSM
Automatic short message alarm carries out early warning, can carry out early warning to different personnel by different stage, and this is to being monitored using conventional method
And the very big improvement of early warning delay of response problem, more than 10 times of monitoring efficiency can be improved.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (5)
1. a kind of new level of ground water is monitored on-line and early warning system, it is characterised in that the new level of ground water is online
Monitoring and early warning system include PVC monitoring pipes, floatation device, stop, gps antenna, bridge equipment case, GPS Base Station, computer master
Machine, GSM alarms；
The floatation device is arranged in PVC monitoring pipes, and floatation device is connected by connecting rod with the gps antenna,
Stop is installed in the connecting rod；
The gps antenna is connected by cable with the bridge equipment case；
The bridge equipment case is electrically connected with the host computer, and the host computer is electrically connected with the GSM alarms；
The GPS Base Station communicates with the host computer.
2. new level of ground water as claimed in claim 1 is monitored on-line and early warning system, it is characterised in that the GPS bases
Station antenna is arranged on fixed monitoring pier, and the GPS Base Station includes gps antenna, reception device, bridge, carries out with host computer
RFDC.
3. new level of ground water as claimed in claim 1 is monitored on-line and early warning system, it is characterised in that the PVC prisons
Test tube is provided with the outer backfill layer of sand of pipe, drilling top backfill argillic horizon, drilling, pvc pipe；
The pvc pipe is arranged in the borehole, and the outer backfill layer of sand of pipe is arranged between the pvc pipe and drilling, and drilling top is arranged bores
Hole top backfill argillic horizon；
The PVC monitoring pipes bottom arranges the aperture of a diameter of 10mm, and aperture is arranged in plum blossom-shaped, and permeable geotechnique is used in aperture outside
Cloth is wrapped up.
4. new level of ground water as claimed in claim 1 is monitored on-line and early warning system, it is characterised in that the floating sets
Lockset is installed on standby equipment box lid, bridge and uninterrupted power source are installed in floatation device, be provided with the top of floatation device
Discharging rod and antenna；Described bridge is arranged on the top of uninterrupted power source, is connected with uninterrupted power source using electric wire, uninterruptedly
Power supply carries out uninterrupted power supply to bridge, and antenna is connected with bridge using cable.
5. a kind of new level of ground water is monitored on-line and method for early warning, it is characterised in that the method includes：
GPS monitoring points and GPS Base Station by satellite signal transit to computer, position the data for gathering using carrier phase measurement
Measurement, is resolved and is observed data correction to data signal, obtains position error for millimetre-sized accuracy of observation；Such as preset water
Position changing value and amplitude of variation, more than the subsoil water place value and amplitude of variation of regulation amplitude, GSM alarms send note report automatically
It is alert.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610839528.7A CN106643984A (en) | 2016-09-22 | 2016-09-22 | Novel online underground water level monitoring and warning system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610839528.7A CN106643984A (en) | 2016-09-22 | 2016-09-22 | Novel online underground water level monitoring and warning system and method |
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| CN106643984A true CN106643984A (en) | 2017-05-10 |
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| CN201610839528.7A Pending CN106643984A (en) | 2016-09-22 | 2016-09-22 | Novel online underground water level monitoring and warning system and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU179735U1 (en) * | 2018-02-02 | 2018-05-23 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Государственный университет морского и речного флота имени адмирала С.О. Макарова" | DEVICE FOR MEASURING THE WATER LEVEL IN WATER BODIES |
| RU183645U1 (en) * | 2018-07-04 | 2018-09-28 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Государственный университет морского и речного флота имени адмирала С.О. Макарова" | DEVICE FOR MEASURING THE WATER LEVEL IN WATER BODIES |
| RU2693744C1 (en) * | 2018-04-18 | 2019-07-04 | Федеральное государственное бюджетное учреждение "Государственный океанографический институт имени Н.Н. Зубова" (ФГБУ "ГОИН") | Method of sea level measurement and device for its implementation |
| CN111189507A (en) * | 2020-03-10 | 2020-05-22 | 黄河勘测规划设计研究院有限公司 | Karst water stratification discrimination and underground water level observation method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201993148U (en) * | 2011-01-04 | 2011-09-28 | 南京信息工程大学 | Reservoir level monitoring device |
| CN202024806U (en) * | 2011-04-27 | 2011-11-02 | 刘威 | Underground water level observation device |
| CN204005271U (en) * | 2014-08-18 | 2014-12-10 | 姬丙兰 | A kind of seabed oil transmission line stolen detection device |
| CN104330132A (en) * | 2014-10-30 | 2015-02-04 | 河海大学 | Device and method for measuring underground water level under negative pressure condition |
| CN204439172U (en) * | 2015-03-25 | 2015-07-01 | 长江重庆航道局 | A kind of fairway depth remote supervision system based on GPRS network |
-
2016
- 2016-09-22 CN CN201610839528.7A patent/CN106643984A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201993148U (en) * | 2011-01-04 | 2011-09-28 | 南京信息工程大学 | Reservoir level monitoring device |
| CN202024806U (en) * | 2011-04-27 | 2011-11-02 | 刘威 | Underground water level observation device |
| CN204005271U (en) * | 2014-08-18 | 2014-12-10 | 姬丙兰 | A kind of seabed oil transmission line stolen detection device |
| CN104330132A (en) * | 2014-10-30 | 2015-02-04 | 河海大学 | Device and method for measuring underground water level under negative pressure condition |
| CN204439172U (en) * | 2015-03-25 | 2015-07-01 | 长江重庆航道局 | A kind of fairway depth remote supervision system based on GPRS network |
Non-Patent Citations (1)
| Title |
|---|
| 张红梅 等: "《水库库容和淤积测量技术研究》", 《水利学报》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU179735U1 (en) * | 2018-02-02 | 2018-05-23 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Государственный университет морского и речного флота имени адмирала С.О. Макарова" | DEVICE FOR MEASURING THE WATER LEVEL IN WATER BODIES |
| RU2693744C1 (en) * | 2018-04-18 | 2019-07-04 | Федеральное государственное бюджетное учреждение "Государственный океанографический институт имени Н.Н. Зубова" (ФГБУ "ГОИН") | Method of sea level measurement and device for its implementation |
| RU183645U1 (en) * | 2018-07-04 | 2018-09-28 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Государственный университет морского и речного флота имени адмирала С.О. Макарова" | DEVICE FOR MEASURING THE WATER LEVEL IN WATER BODIES |
| CN111189507A (en) * | 2020-03-10 | 2020-05-22 | 黄河勘测规划设计研究院有限公司 | Karst water stratification discrimination and underground water level observation method |
| CN111189507B (en) * | 2020-03-10 | 2021-05-25 | 黄河勘测规划设计研究院有限公司 | Karst water stratification discrimination and underground water level observation method |
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Application publication date: 20170510 |