US20120227482A1 - Groundwater profile monitoring system - Google Patents
Groundwater profile monitoring system Download PDFInfo
- Publication number
- US20120227482A1 US20120227482A1 US13/285,806 US201113285806A US2012227482A1 US 20120227482 A1 US20120227482 A1 US 20120227482A1 US 201113285806 A US201113285806 A US 201113285806A US 2012227482 A1 US2012227482 A1 US 2012227482A1
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- Prior art keywords
- groundwater
- sensor
- guide
- cable
- monitoring system
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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- 239000003673 groundwater Substances 0.000 title claims abstract description 73
- 238000012544 monitoring process Methods 0.000 title claims abstract description 24
- 238000004804 winding Methods 0.000 claims description 32
- 238000013459 approach Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 abstract description 5
- 239000013535 sea water Substances 0.000 description 8
- 230000035515 penetration Effects 0.000 description 6
- 238000010248 power generation Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 3
- 239000013505 freshwater Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 235000015096 spirit Nutrition 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
- B66D1/36—Guiding, or otherwise ensuring winding in an orderly manner, of ropes, cables, or chains
- B66D1/38—Guiding, or otherwise ensuring winding in an orderly manner, of ropes, cables, or chains by means of guides movable relative to drum or barrel
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/06—Methods or installations for obtaining or collecting drinking water or tap water from underground
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/008—Winding units, specially adapted for drilling operations
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/04—Measuring depth or liquid level
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V9/00—Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00
- G01V9/02—Determining existence or flow of underground water
Definitions
- This application is directed to a groundwater profile monitoring system, and more particularly to a groundwater profile monitoring system for vertically monitoring information on the quality of groundwater by using a groundwater sensor.
- a groundwater level of an aquifer near the coast periodically rises and falls due to a change of the tide of the ocean, and the salinity of seawater causes a difference in the density of groundwater and the seawater to penetrate under freshwater.
- a dispersion zone appears at a border where freshwater and saltwater meet due to a dispersion of water, and a location, a shape, and a range of the mixing zone are determined by time, a form of an aquifer, an irrigation feature, and an amount of discharged groundwater.
- a quality of groundwater needs to be periodically and vertically monitored so that a non-homogeneity of a medium, an uncertain form and location of a low permeability zone, and a penetration of seawater to groundwater due to their extension properties can be observed.
- Korea manages a total of more than 100 seawater penetration observing facilities to secure groundwater of coastal/island areas and prevent penetration of seawater in advance.
- Korea manages 131 seawater penetration observing facilities as of 2006, and since an aquifer having several layers is distributed under ground, the qualities of groundwater appear in a variety of ways according to depths.
- an aspect of this disclosure provides a groundwater profile monitoring system which can collect a profile material regarding a quality of groundwater at a predetermined time interval and effectively observe a quality of groundwater at a location of an uneven aquifer where it is necessary to observe a penetration of seawater and a vertical quality of groundwater.
- a groundwater profile monitoring system includes a groundwater sensor configured to sense a state of groundwater; a driving unit including a sensor cable to which the groundwater sensor is connected at one end thereof and configured to vertically move the groundwater sensor; a data logger configured to receive and store sensing information sensed by the groundwater sensor and transmit the sensing information to a designated server; and a power supply unit configured to produce electric power using solar energy and supply the produced electric power to the driving unit and the data logger.
- the driving unit may include a winding part for winding the sensor cable, a winding motor configured to rotate the winding part, and a controller configured to control the winding motor.
- the controller may drive the winding motor at a predetermined time interval and move the groundwater sensor upward and downward.
- the driving unit may include: a cable guide configured to guide the sensor cable so that the sensor cable is uniformly wound on the winding part; a guide rail connected to the cable guide and configured to guide a movement path of the cable guide; a pair of feeding cables connected to opposite sides of the cable guides; and a pair of guide motors selectively driven by the controller and configured to pull the feeding cables respectively and move the cable guide to the right and to the left.
- a pair of movement restrictors disposed opposite to each other may be coupled to the guide rail such that a movement range of the cable guide is restricted by the movement restrictors.
- Each movement restrictor may include an approach detector configured to transmit a sensing signal when the cable guide approaches within a predetermined distance.
- the controller may receive the sensing signal to stop one of the guide motors which is being driven and drive the remaining guide motor, so as to allow the cable guide to move in a direction opposite to a travel direction of the cable guide.
- the movement restrictor may include a changeover switch contacting the cable guide to be operated.
- the controller may receive a contact signal of the changeover switch to stop one of the guide motors which is being driven and drive the remaining guide motor, so as to allow the cable guide to move in a direction opposite to a travel direction of the cable guide.
- the cable guide may include a depth measurer configured to measure a winding length of the sensor cable and calculate a depth of the groundwater sensor.
- a profile material of vertical groundwater according to a depth of a tube well can be continuously collected by using one sensor, an accurate groundwater related material can be collected more efficiently. Further, since a separate power transmission system for managing the system is not required, the system can be easily constructed in an area where electric power cannot be supplied easily.
- FIG. 1 is a front view of a groundwater profile monitoring system according to an embodiment
- FIG. 2 is a view illustrating a driving unit of the groundwater profile monitoring system according to an embodiment
- FIG. 3 is a view illustrating a part of the driving unit of FIG. 2 ;
- FIG. 4 is a side view illustrating the driving unit of FIG. 2 ;
- FIG. 5 is a view for explaining a structure of a cable guide.
- FIG. 1 is a front view of a groundwater profile monitoring system according to an embodiment.
- FIG. 2 is a view illustrating a driving unit of the groundwater profile monitoring system according to an embodiment.
- groundwater profile monitoring system 100 according to an embodiment of this disclosure will be described with reference to FIGS. 1 and 2 .
- the groundwater profile monitoring system 100 includes a driving unit 110 , a groundwater sensor 140 , a power supply unit 150 , and a data logger 160 .
- the driving unit 110 includes a sensor cable 118 to move the groundwater sensor 140 connected to one end of the sensor cable 118 vertically, i.e. in an upward/downward direction of FIG. 1 .
- the driving unit 110 includes a winding part 112 configured to be rotated about a shaft inserted into a center thereof to wind a cable 118 therearound and a winding motor 114 configured to rotate the winding part 112 .
- the winding part 112 and the winding motor 114 are supported by a support frame 116 .
- the driving unit 110 includes a controller 115 configured to control a driving interval and a rotating direction of the winding motor 114 .
- the controller 115 drives the winding motor 114 at a predetermined time interval to move the groundwater sensor 140 upward and downward.
- the groundwater sensor 140 senses a state of groundwater.
- the groundwater sensor 140 collects information about a water level, a temperature, an electric conductivity, a TDS (Total Dissolved Solids), a DO (Dissolved Oxygen), etc. and transmits the information to the data logger 160 .
- TDS Total Dissolved Solids
- DO Dissolved Oxygen
- the groundwater sensor 140 may be set to sense states of the groundwater at a predetermined time interval, and preferably includes a wireless communication means for transmitting collected information to the data logger 160 .
- the groundwater sensor 140 may include its own depth sensor for measuring a depth of its location. In this case, a depth of the groundwater sensor 140 may be identified without using a below-described depth measurer 130 .
- the power supply unit 150 may be realized by a photovoltaic power generation means or a solar thermal power generation means for producing electric power using solar energy.
- the power supply unit 150 is realized by a photovoltaic power or solar thermal power generation means including a capacitor.
- the power supply unit 150 supplies the produced electric power to parts, such as the driving unit 110 and the data logger 160 , which require electric power.
- the groundwater profile monitoring system 100 may be easily installed even in an area having no electric facility and to which electric power cannot be supplied easily.
- the groundwater profile monitoring system 100 drives the driving unit 110 and the data logger 160 at a predetermined time interval, significantly reducing power consumption.
- the power supply unit 150 is realized by a photovoltaic power or solar thermal power generation means showing a difference between amounts of generated electric power depending on a change in weather, electric power may be stably supplied to the parts to which electric power should be supplied by using the already generated and accumulated electric power.
- the data logger 160 receives sensing information sensed and collected by the groundwater sensor 140 , and transmits the sensing information to a server (not shown).
- the data logger 160 is configured to transmit and receive data to and from the groundwater sensor 140 and the server (not shown) through a wireless communication means.
- the data logger 160 may include a CDMA (Code Division Multiple Access) modem to transmit and receive data using the CDMA modem.
- CDMA Code Division Multiple Access
- the data logger 160 is configured to transmit an emergency signal to a manager or a user through the CDMA modem when electric power of a predetermined level cannot be supplied or data cannot be smoothly transmitted or received due to a failure of a device which can be caused by lightning.
- FIG. 3 is a view illustrating a part of the driving unit of FIG. 2 .
- FIG. 4 is a side view illustrating the driving unit of FIG. 2 .
- FIG. 5 is a view for explaining a structure of a cable guide.
- the driving unit guides the sensor cable 118 so that the sensor cable 118 can be uniformly wound on the winding part 112 and prevents the sensor cable 118 from being intensively wound only on one side of the winding part 112 .
- the driving part 110 further includes a cable guide 120 and a unit for driving the cable guide 120 .
- the cable guide 120 includes a groove for preventing the sensor cable 118 from being separated from the cable guide 120 while moving to the right and to the left to guide a location where the sensor cable 118 is wound.
- the cable guide 120 may have a form where a bearing is interposed between an inner race and an outer race, but also may have a form where an inner race is rotated by the sensor cable 118 and a feeding cable 126 is connected to an outer race.
- the cable guide 120 is moved to the right and to the left along an axial direction of the guide rail 122 while being connected to the guide rail 122 . Then, the guide rail 122 is coupled to and supported by the support frame 116 and disposed parallel to an axial direction of the winding part 112 .
- Feeding cables 126 are respectively connected to opposite side surfaces of the cable guide 120 , i.e. a left side surface and a right side surface of the cable guide 120 of FIG. 3 .
- the feeding cables 126 are respectively pulled by a pair of guide motors 124 installed on the right and left sides of the groundwater profile monitoring system 100 respectively, so that the cable guide 120 can be moved to the right and to the left.
- a pair of movement restrictors 128 disposed opposite to each other may be coupled to the guide rail 122 .
- the movement restrictors 128 prevent the cable guide 120 moved to the right and to the left along a guide rail 122 from being deviated from a winding range of the winding part 112 . That is, the movement range of the cable guide 120 is restricted by the movement restrictors 128 .
- the movement restrictors 128 are disposed at locations corresponding to the right and left sides in the winding part 112 which are spaces for winding the sensor cable 118 .
- a pair of guide motors 124 for moving the cable guide 120 is selectively driven under the control of the controller 115 .
- the movement restrictor 128 includes an approach detector 130 configured to transmit a sensing signal to the controller 115 when the cable guide 120 approaches within a predetermined distance.
- the controller 115 When receiving the sensing signal, the controller 115 stops a guide motor 124 which is being driven and drives a guide motor 124 on an opposite side to allow the cable guide 120 to move in a direction opposite to its travel direction.
- the right guide motor 124 remains stopped while the left guide motor 124 installed on the left side of FIG. 2 is driven to pull the cable guide to the left.
- the sensing signal is transmitted to the controller 115 and the controller 115 stops the left guide motor 124 which is being driven and drives the right guide motor 124 . If the right guide motor 124 is driven, the cable guide 120 is pulled and moved to the right.
- the cable guide 120 is reciprocally moved to the right and to the left to allow the sensor cable 118 to be uniformly wound on the winding part 112 .
- the movement restrictor 128 may include a changeover switch (not shown) contacting the cable guide 120 to be operated instead of the approach detector 130 , so that the guide motors 124 can be selectively driven by the controller 115 having received a contact signal of the changeover switch.
- the cable guide 120 further includes a depth measurer 132 configured to measure a winding length of the sensor cable 118 and calculate a depth of the groundwater sensor 140 inserted into a tube well.
- the depth measurer 132 may be realized by equipment such as a unit having a reel contacting the sensor cable 118 to be rotated or an encoder.
- the depth information of the groundwater sensor 140 measured by the depth measurer 132 is transmitted to the data logger 160 through a wireless communication means installed in the depth measurer 132 .
- FIG. 6 illustrates an example of the groundwater sensor
- FIG. 7 illustrates an example of the data logger.
- the groundwater sensor 140 and the data logger 160 may be realized by the products manufactured as shown.
Abstract
A groundwater profile monitoring system includes a groundwater sensor configured to sense a state of groundwater; a driving unit including a sensor cable to which the groundwater sensor is connected at one end thereof and configured to vertically move the groundwater sensor; a data logger configured to receive and store sensing information sensed by the groundwater sensor and transmit the sensing information to a designated server; and a power supply unit configured to produce electric power using solar energy and supply the produced electric power to the driving unit and the data logger. Since a profile material of vertical groundwater according to a depth of a tube well can be continuously collected by using one sensor, an accurate groundwater related material can be collected more efficiently.
Description
- This application is directed to a groundwater profile monitoring system, and more particularly to a groundwater profile monitoring system for vertically monitoring information on the quality of groundwater by using a groundwater sensor.
- In general, a groundwater level of an aquifer near the coast periodically rises and falls due to a change of the tide of the ocean, and the salinity of seawater causes a difference in the density of groundwater and the seawater to penetrate under freshwater.
- Then, a dispersion zone appears at a border where freshwater and saltwater meet due to a dispersion of water, and a location, a shape, and a range of the mixing zone are determined by time, a form of an aquifer, an irrigation feature, and an amount of discharged groundwater.
- Also, since a coastal aquifer consists of several layers, a quality of groundwater needs to be periodically and vertically monitored so that a non-homogeneity of a medium, an uncertain form and location of a low permeability zone, and a penetration of seawater to groundwater due to their extension properties can be observed.
- Korea manages a total of more than 100 seawater penetration observing facilities to secure groundwater of coastal/island areas and prevent penetration of seawater in advance.
- Korea manages 131 seawater penetration observing facilities as of 2006, and since an aquifer having several layers is distributed under ground, the qualities of groundwater appear in a variety of ways according to depths.
- However, since the current monitoring system can observe a quality of water only at a point where it is initially installed, penetration of seawater cannot be properly observed. In particular, since fresh water and saltwater alternate at a place where impermeability layers and permeability layers are distributed to form several layers, causing severe non-homogeneity, it is inevitably necessary to vertically monitor them.
- Accordingly, this disclosure and inventive concept herein have been developed to solve the above-mentioned problems occurring with conventional approaches, and an aspect of this disclosure provides a groundwater profile monitoring system which can collect a profile material regarding a quality of groundwater at a predetermined time interval and effectively observe a quality of groundwater at a location of an uneven aquifer where it is necessary to observe a penetration of seawater and a vertical quality of groundwater.
- In accordance with an embodiment, a groundwater profile monitoring system includes a groundwater sensor configured to sense a state of groundwater; a driving unit including a sensor cable to which the groundwater sensor is connected at one end thereof and configured to vertically move the groundwater sensor; a data logger configured to receive and store sensing information sensed by the groundwater sensor and transmit the sensing information to a designated server; and a power supply unit configured to produce electric power using solar energy and supply the produced electric power to the driving unit and the data logger.
- The driving unit may include a winding part for winding the sensor cable, a winding motor configured to rotate the winding part, and a controller configured to control the winding motor. The controller may drive the winding motor at a predetermined time interval and move the groundwater sensor upward and downward.
- The driving unit may include: a cable guide configured to guide the sensor cable so that the sensor cable is uniformly wound on the winding part; a guide rail connected to the cable guide and configured to guide a movement path of the cable guide; a pair of feeding cables connected to opposite sides of the cable guides; and a pair of guide motors selectively driven by the controller and configured to pull the feeding cables respectively and move the cable guide to the right and to the left.
- A pair of movement restrictors disposed opposite to each other may be coupled to the guide rail such that a movement range of the cable guide is restricted by the movement restrictors.
- Each movement restrictor may include an approach detector configured to transmit a sensing signal when the cable guide approaches within a predetermined distance. The controller may receive the sensing signal to stop one of the guide motors which is being driven and drive the remaining guide motor, so as to allow the cable guide to move in a direction opposite to a travel direction of the cable guide.
- The movement restrictor may include a changeover switch contacting the cable guide to be operated. The controller may receive a contact signal of the changeover switch to stop one of the guide motors which is being driven and drive the remaining guide motor, so as to allow the cable guide to move in a direction opposite to a travel direction of the cable guide.
- The cable guide may include a depth measurer configured to measure a winding length of the sensor cable and calculate a depth of the groundwater sensor.
- According to an embodiment, since a profile material of vertical groundwater according to a depth of a tube well can be continuously collected by using one sensor, an accurate groundwater related material can be collected more efficiently. Further, since a separate power transmission system for managing the system is not required, the system can be easily constructed in an area where electric power cannot be supplied easily.
- The above and other aspects, features and advantages of this disclosure will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:
-
FIG. 1 is a front view of a groundwater profile monitoring system according to an embodiment; -
FIG. 2 is a view illustrating a driving unit of the groundwater profile monitoring system according to an embodiment; -
FIG. 3 is a view illustrating a part of the driving unit ofFIG. 2 ; -
FIG. 4 is a side view illustrating the driving unit ofFIG. 2 ; -
FIG. 5 is a view for explaining a structure of a cable guide. - Hereinafter, embodiments of this disclosure will be described with reference to the accompanying drawings. In the following description, the same elements will be designated by the same reference numerals although they are shown in different drawings. Further, in the following discussion, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of this disclosure rather unclear. While an embodiment of this disclosure will be described hereinbelow, it is apparent that the technical spirit of the inventive concept is not limited to the embodiment described, but may be properly carried out by those skilled in the art in light of the appended claims.
-
FIG. 1 is a front view of a groundwater profile monitoring system according to an embodiment.FIG. 2 is a view illustrating a driving unit of the groundwater profile monitoring system according to an embodiment. - Hereinafter, the groundwater
profile monitoring system 100 according to an embodiment of this disclosure will be described with reference toFIGS. 1 and 2 . - The groundwater
profile monitoring system 100 according to an embodiment includes adriving unit 110, agroundwater sensor 140, apower supply unit 150, and adata logger 160. - The
driving unit 110 includes asensor cable 118 to move thegroundwater sensor 140 connected to one end of thesensor cable 118 vertically, i.e. in an upward/downward direction ofFIG. 1 . - In more detail, the
driving unit 110 includes awinding part 112 configured to be rotated about a shaft inserted into a center thereof to wind acable 118 therearound and a windingmotor 114 configured to rotate thewinding part 112. The windingpart 112 and the windingmotor 114 are supported by asupport frame 116. - The
driving unit 110 includes acontroller 115 configured to control a driving interval and a rotating direction of the windingmotor 114. Thecontroller 115 drives the windingmotor 114 at a predetermined time interval to move thegroundwater sensor 140 upward and downward. - The
groundwater sensor 140 senses a state of groundwater. In more detail, thegroundwater sensor 140 collects information about a water level, a temperature, an electric conductivity, a TDS (Total Dissolved Solids), a DO (Dissolved Oxygen), etc. and transmits the information to thedata logger 160. - Then, the
groundwater sensor 140 may be set to sense states of the groundwater at a predetermined time interval, and preferably includes a wireless communication means for transmitting collected information to thedata logger 160. - The
groundwater sensor 140 may include its own depth sensor for measuring a depth of its location. In this case, a depth of thegroundwater sensor 140 may be identified without using a below-describeddepth measurer 130. - The
power supply unit 150 may be realized by a photovoltaic power generation means or a solar thermal power generation means for producing electric power using solar energy. Preferably, thepower supply unit 150 is realized by a photovoltaic power or solar thermal power generation means including a capacitor. - The
power supply unit 150 supplies the produced electric power to parts, such as thedriving unit 110 and thedata logger 160, which require electric power. - When the
power supply unit 150 is realized by an electric power generation unit which uses solar energy, the groundwaterprofile monitoring system 100 according to an embodiment may be easily installed even in an area having no electric facility and to which electric power cannot be supplied easily. - The groundwater
profile monitoring system 100 according to an embodiment drives thedriving unit 110 and the data logger 160 at a predetermined time interval, significantly reducing power consumption. - Accordingly, even when the
power supply unit 150 is realized by a photovoltaic power or solar thermal power generation means showing a difference between amounts of generated electric power depending on a change in weather, electric power may be stably supplied to the parts to which electric power should be supplied by using the already generated and accumulated electric power. - The
data logger 160 receives sensing information sensed and collected by thegroundwater sensor 140, and transmits the sensing information to a server (not shown). - The
data logger 160 is configured to transmit and receive data to and from thegroundwater sensor 140 and the server (not shown) through a wireless communication means. For example, thedata logger 160 may include a CDMA (Code Division Multiple Access) modem to transmit and receive data using the CDMA modem. - The
data logger 160 is configured to transmit an emergency signal to a manager or a user through the CDMA modem when electric power of a predetermined level cannot be supplied or data cannot be smoothly transmitted or received due to a failure of a device which can be caused by lightning. -
FIG. 3 is a view illustrating a part of the driving unit ofFIG. 2 .FIG. 4 is a side view illustrating the driving unit ofFIG. 2 .FIG. 5 is a view for explaining a structure of a cable guide. - The driving unit guides the
sensor cable 118 so that thesensor cable 118 can be uniformly wound on thewinding part 112 and prevents thesensor cable 118 from being intensively wound only on one side of thewinding part 112. To achieve this, the drivingpart 110 further includes acable guide 120 and a unit for driving thecable guide 120. - Hereinafter, the
cable guide 120 and the unit for driving thecable guide 120 will be described in detail with reference toFIGS. 3 to 5 . - The
cable guide 120 includes a groove for preventing thesensor cable 118 from being separated from thecable guide 120 while moving to the right and to the left to guide a location where thesensor cable 118 is wound. - As illustrated in
FIG. 5 , thecable guide 120 may have a form where a bearing is interposed between an inner race and an outer race, but also may have a form where an inner race is rotated by thesensor cable 118 and a feedingcable 126 is connected to an outer race. - The
cable guide 120 is moved to the right and to the left along an axial direction of theguide rail 122 while being connected to theguide rail 122. Then, theguide rail 122 is coupled to and supported by thesupport frame 116 and disposed parallel to an axial direction of the windingpart 112. - Feeding
cables 126 are respectively connected to opposite side surfaces of thecable guide 120, i.e. a left side surface and a right side surface of thecable guide 120 ofFIG. 3 . - The feeding
cables 126 are respectively pulled by a pair ofguide motors 124 installed on the right and left sides of the groundwaterprofile monitoring system 100 respectively, so that thecable guide 120 can be moved to the right and to the left. - Then, a pair of
movement restrictors 128 disposed opposite to each other may be coupled to theguide rail 122. - The movement restrictors 128 prevent the
cable guide 120 moved to the right and to the left along aguide rail 122 from being deviated from a winding range of the windingpart 112. That is, the movement range of thecable guide 120 is restricted by themovement restrictors 128. - The movement restrictors 128 are disposed at locations corresponding to the right and left sides in the winding
part 112 which are spaces for winding thesensor cable 118. - Meanwhile, a pair of
guide motors 124 for moving thecable guide 120 is selectively driven under the control of thecontroller 115. - To achieve this, the
movement restrictor 128 includes anapproach detector 130 configured to transmit a sensing signal to thecontroller 115 when thecable guide 120 approaches within a predetermined distance. - When receiving the sensing signal, the
controller 115 stops aguide motor 124 which is being driven and drives aguide motor 124 on an opposite side to allow thecable guide 120 to move in a direction opposite to its travel direction. - For example, the
right guide motor 124 remains stopped while theleft guide motor 124 installed on the left side ofFIG. 2 is driven to pull the cable guide to the left. In this state, if thecable guide 120 continues to move to the left so that theapproach detector 130 detects an approach of thecable guide 120, the sensing signal is transmitted to thecontroller 115 and thecontroller 115 stops theleft guide motor 124 which is being driven and drives theright guide motor 124. If theright guide motor 124 is driven, thecable guide 120 is pulled and moved to the right. - In this way, the
cable guide 120 is reciprocally moved to the right and to the left to allow thesensor cable 118 to be uniformly wound on the windingpart 112. - The movement restrictor 128 may include a changeover switch (not shown) contacting the
cable guide 120 to be operated instead of theapproach detector 130, so that theguide motors 124 can be selectively driven by thecontroller 115 having received a contact signal of the changeover switch. - Meanwhile, the
cable guide 120 further includes adepth measurer 132 configured to measure a winding length of thesensor cable 118 and calculate a depth of thegroundwater sensor 140 inserted into a tube well. - The
depth measurer 132 may be realized by equipment such as a unit having a reel contacting thesensor cable 118 to be rotated or an encoder. - The depth information of the
groundwater sensor 140 measured by thedepth measurer 132 is transmitted to thedata logger 160 through a wireless communication means installed in thedepth measurer 132. -
FIG. 6 illustrates an example of the groundwater sensor, andFIG. 7 illustrates an example of the data logger. Thegroundwater sensor 140 and thedata logger 160 may be realized by the products manufactured as shown. - While the inventive concept has been shown and described with reference to certain embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Accordingly, the embodiments and accompanying drawings disclosed herein are not intended to restrict the technical spirit of the this disclosure, but are intended to help explain the inventive concept. The scope of this disclosure should be construed by the following claims and all the technical spirits corresponding the equivalents should be construed to fall within the scope of the inventive concept.
Claims (7)
1. A groundwater profile monitoring system comprising:
a groundwater sensor configured to sense a state of groundwater;
a driving unit including a sensor cable to which the groundwater sensor is connected at one end thereof and configured to vertically move the groundwater sensor;
a data logger configured to receive and store sensing information sensed by the groundwater sensor and transmit the sensing information to a designated server; and
a power supply unit configured to produce electric power using solar energy and supply the produced electric power to the driving unit and the data logger.
2. The groundwater profile monitoring system of claim 1 , wherein the driving unit includes a winding part for winding the sensor cable, a winding motor configured to rotate the winding part, and a controller configured to control the winding motor, and wherein the controller drives the winding motor at a predetermined time interval and moves the groundwater sensor upward and downward.
3. The groundwater profile monitoring system of claim 2 , wherein the driving unit comprises:
a cable guide configured to guide the sensor cable so that the sensor cable is uniformly wound on the winding part;
a guide rail connected to the cable guide and configured to guide a movement path of the cable guide;
a pair of feeding cables connected to opposite sides of the cable guides; and
a pair of guide motors selectively driven by the controller and configured to pull the feeding cables respectively and move the cable guide to the right and to the left.
4. The groundwater profile monitoring system of claim 3 , wherein a pair of movement restrictors disposed opposite to each other are coupled to the guide rail such that a movement range of the cable guide is restricted by the movement restrictors.
5. The groundwater profile monitoring system of claim 4 , wherein each movement restrictor comprises an approach detector configured to transmit a sensing signal when the cable guide approaches within a predetermined distance, and wherein the controller receives the sensing signal to stop one of the guide motors which is being driven and drive the remaining guide motor, so as to allow the cable guide to move in a direction opposite to a travel direction of the cable guide.
6. The groundwater profile monitoring system of claim 4 , wherein the movement restrictor comprises a changeover switch contacting the cable guide to be operated, and wherein the controller receives a contact signal of the changeover switch to stop one of the guide motors which is being driven and drive the remaining guide motor, so as to allow the cable guide to move in a direction opposite to a travel direction of the cable guide.
7. The groundwater profile monitoring system of claim 3 , wherein the cable guide comprises a depth measurer configured to measure a winding length of the sensor cable and calculate a depth of the groundwater sensor.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020110020979A KR101237925B1 (en) | 2011-03-09 | 2011-03-09 | Monitoring system for groundwater profile |
KR10-2011-0020979 | 2011-03-09 |
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US20120227482A1 true US20120227482A1 (en) | 2012-09-13 |
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Family Applications (1)
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US13/285,806 Abandoned US20120227482A1 (en) | 2011-03-09 | 2011-10-31 | Groundwater profile monitoring system |
Country Status (4)
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US (1) | US20120227482A1 (en) |
EP (1) | EP2497897B1 (en) |
JP (1) | JP5524161B2 (en) |
KR (1) | KR101237925B1 (en) |
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US10208585B2 (en) | 2015-08-11 | 2019-02-19 | Intrasen, LLC | Groundwater monitoring system and method |
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Also Published As
Publication number | Publication date |
---|---|
JP5524161B2 (en) | 2014-06-18 |
KR20120103005A (en) | 2012-09-19 |
EP2497897B1 (en) | 2017-04-19 |
EP2497897A3 (en) | 2015-09-16 |
JP2012189575A (en) | 2012-10-04 |
KR101237925B1 (en) | 2013-02-27 |
EP2497897A2 (en) | 2012-09-12 |
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