WO2022034458A1 - Système et procédé de génération de signaux acoustiques dans un puits de forage permettant la détermination du niveau d'eau dans le puits de forage - Google Patents

Système et procédé de génération de signaux acoustiques dans un puits de forage permettant la détermination du niveau d'eau dans le puits de forage Download PDF

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Publication number
WO2022034458A1
WO2022034458A1 PCT/IB2021/057264 IB2021057264W WO2022034458A1 WO 2022034458 A1 WO2022034458 A1 WO 2022034458A1 IB 2021057264 W IB2021057264 W IB 2021057264W WO 2022034458 A1 WO2022034458 A1 WO 2022034458A1
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WO
WIPO (PCT)
Prior art keywords
borewell
data packets
top end
impact
acoustic signal
Prior art date
Application number
PCT/IB2021/057264
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English (en)
Inventor
Vijay Dattatray Gawade
Original Assignee
Vijay Dattatray Gawade
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Vijay Dattatray Gawade filed Critical Vijay Dattatray Gawade
Publication of WO2022034458A1 publication Critical patent/WO2022034458A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK 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
    • E21B47/047—Liquid level
    • 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
    • G01F23/22—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 measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—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 measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/296—Acoustic waves

Definitions

  • the present disclosure relates generally to borewells and tubewells.
  • the present disclosure relates to a simple, portable, and efficient system and method for generating acoustic signals in borewell to determine the level of water in the borewell.
  • Measurement of groundwater levels especially in borewells is an important action to track the performance and sustainable usage of borewells /boreholes from a water resource management point of view.
  • the water level is a proxy indicator of water quantity available in borewells /boreholes and monitoring its fluctuations can guide the borewell owner on its performance and undertaking appropriate measures for regulating abstractions and recharge, thus helping to enhance the life of the borewell and delaying early drying up of them.
  • the existing method to determine water levels at borewell sites includes using a measuring tape or high-end equipment such as a piezometer or a sonar meter. Measurements with a measuring tape or a string is a cumbersome method that requires removal of the top assembly of borewell /borehole to allow the dropping of a tape or a string. The method poses constraints in frequent measurements as it requires laborious efforts for every measurement.
  • Such the impact generator may be either by using an iron rod or hammer or any other object (including but not limited to electronic device or electro-mechanical device) to generate acoustic signals (sound waves) and echoes with the required amplitude (or frequency) which can be analyzed to determine the water level in the borewell.
  • the present disclosure relates generally to borewells and tubewells.
  • the present disclosure relates to a simple, portable, and efficient system and method for generating acoustic signals in borewell to determine the level of water in the borewell.
  • An aspect of the present disclosure pertains to a system and method for determining the level of water in a borewell.
  • the system and method involve a portable nonmechanized impact generator (device) adapted to be hit at a top end of the borewell to generate a first acoustic signal that travels through a housing of the borewell.
  • the methods may include the steps of a) hitting at a top end or cover of the borewell with an iron rod or a hammer or any other object or by using the portable non-mechanized impact generator having tapping mechanism inbuilt or by using a non-mechanised sound pulse generator.
  • the impact generator upon hitting the top of the borewell or a top metal cover of the borewell or the sound pulse generator may generate the first acoustic signals that travel through a housing/cavity of the borewell and once such generated sound waves touch the surface of the water inside the borewell, they get reflected in form of the second set of acoustic signals.
  • the system and method may involve an acoustic sensor positioned at the top of the borewell to detect the first acoustic signal generated by the impact generator or the sound pulse generator, and further detect a second acoustic signal associated with the reflection of at least a part of the first acoustic signal with the body of the water within the borewell.
  • the system and method may involve a mobile device operatively coupled with the acoustic sensor to transmit data pertaining to the position of the sensor, location of the impact generator/sound pulse generator, and time stamp pertaining to the detection of the first acoustic signals and the second acoustic signals by the acoustic sensor, to a computing unit.
  • the computing unit may include a cloud or a remotely located server, and the likes, that may analyze and process the data to determine the level of the water in the borewell, and further sharing the analyzed results back to the mobile device.
  • FIG. 1A illustrates an exemplary representation of the proposed system being set-up with a borewell and a portable non-mechanized impact generator/sound pulse generator for determining water level at the borewell, in accordance with an embodiment of the present disclosure.
  • FIG. IB illustrates an exemplary block diagram of the proposed system for determining water level at the borewell, in accordance with an embodiment of the present disclosure.
  • FIGs. 2 A and 2B illustrates an exemplary representation of the portable nonmechanized impact generator and a sound pulse generator respectively for generating sound in a housing of the borewell, in accordance with an embodiment of the present disclosure.
  • FIG. 3 illustrates a flow diagram of the proposed method for determining water level at the borewell, in accordance with an embodiment of the present disclosure
  • FIG. 4 illustrates an exemplary functional block diagram for a system for determining water level at the borewell, in accordance with an embodiment of the present disclosure.
  • Embodiments of the present invention include various steps, which will be described below. The steps may be performed by hardware components or may be embodied in machine-executable instructions, which may be used to cause a general-purpose or specialpurpose processor programmed with the instructions to perform the steps. Alternatively, steps may be performed by a combination of hardware, software, and firmware and/or by human operators. [00025] While the present disclosure is explained from a perspective of a borewell and determining a level of water, however, it needs to be appreciated that the present disclosure also relates to a system and method for determining the level of other liquids, being stored in containers or tube wells, but not limited to the likes. And all such embodiments are well within the scope of the present invention.
  • the present disclosure relates generally to borewells and tubewells.
  • the present disclosure relates to a simple, portable, and efficient system and method for generating acoustic signals in borewell to determine the level of water in the borewell.
  • the present disclosure elaborates upon a system for determining a level of water in a borewell.
  • the system including an impact generator adapted to be hit at a top end of the borewell, wherein upon hitting, an impact of the impact generator on the top end of the borewell generates a first acoustic signal that travels through a housing of the borewell.
  • the system further includes an acoustic sensor positioned at the top end of the borewell. The acoustic sensor configured to detect the first acoustic signal generated by the of impact generator, and correspondingly generate a first set of data packets.
  • the acoustic sensor further configured to detect a second acoustic signal associated with the reflection of at least a part of the first acoustic signal with a body of the water within the borewell, and correspondingly generate a second set of data packets.
  • the system further includes a computing unit communicatively coupled to the acoustic sensor, the computing unit comprising one or more processors operatively coupled with a memory, the memory storing instructions executable by the one or more processors and configured to receive the first set of data packets and the second set of data packets from the acoustic sensor, and process the received first set of data packets and the second set of data packets to determine the level of water inside the borewell with respect to the top end, and correspondingly generate a third set of data packets.
  • a computing unit communicatively coupled to the acoustic sensor, the computing unit comprising one or more processors operatively coupled with a memory, the memory storing instructions executable by the one or more processors and configured to receive the first set of data packets and the second set of data packets from the acoustic sensor, and process the received first set of data packets and the second set of data packets to determine the level of water inside the borewell with respect to the top end, and correspondingly generate
  • the system can include a mobile device including a communication unit, being positioned at the top end of the borewell.
  • the mobile device can be operatively coupled with the acoustic sensor to communicatively couple the acoustic sensor and mobile device with the computing unit, and configured to transmit the first set of data packets and the second set of data packets to the computing unit, and further enables the mobile device to receive the third set of data packets generated by the computing unit.
  • the computing unit can be any or a combination of a remotely located server, cloud-based computing unit, computer, and smart phone.
  • the first set of data packets can include data pertaining to any or a combination of the location of the impact generator/sound pulse generator with respect to the top end of the borewell, location of the acoustic sensor with respect to the top end of the borewell, a time stamp of the impact on the top end of the borewell, and wherein the second set of data packets can include data pertaining to time stamp of detection of the second acoustic signal by the acoustic sensor.
  • the impact generator can be a portable non-mechanized device selected from any or a combination of an iron rod and a hammer.
  • the impact generator can be a non-mechanized device including a tapping mechanism including a plunger operatively coupled with an energized/pressurized spring.
  • the mechanized device can be configured to, upon actuation, impact on the top end of the borewell to generate the first acoustic signal.
  • the sound pulse generator can be a non-mechanized device comprising a piston and chamber and a sound wave is generated by impacting the piston manually to generate the required acoustic signal.
  • the borewell can include a borewell cover removably coupled to the top end of the borewell, and adapted to cover an opening at the top end of the borewell.
  • the impact generator is configured to be hit on the borewell cover to generate the first acoustic signal.
  • the borewell cover can be made of a sound conductive material selected from any or a combination of metals and non-metals.
  • the mobile device can include a display unit.
  • the mobile device can be configured to process the received third set of data packets, and display the determined level of water on the display unit.
  • the present disclosure elaborates upon a method for generating sound waves in a borewell to determine a level of water inside the borewell.
  • the method can include the steps of hitting, at a top end of the borewell, by an impact generator, wherein, upon hitting, an impact of the impact generator at the top end of the borewell generates a first acoustic signal that travels through a cavity of the borewell.
  • the method can also include generating a sound wave or an acoustic signal using a sound pulse generator.
  • the method can include detecting, at an acoustic sensor positioned at the top end of the borewell, the first acoustic signal, and correspondingly generate a first set of data packets, wherein the acoustic sensor is communicatively coupled with a computing unit comprising one or more processors; and detecting, at the acoustic sensor, a second acoustic signal associated with the reflection of at least a part of the first acoustic signal with a body of the water within the borewell, and correspondingly generate a second set of data packets.
  • the method can further include the steps of transmitting, the first set of data packets, and the second set of data packets to the computing unit, and processing, by the computing unit, the first set of data packets and the second set of data packets, to determine the level of water inside the borewell with respect to the top end of the borewell.
  • FIG. 1A illustrates an exemplary representation of the proposed system being set-up with a borewell and a portable non-mechanized device for determining water level at the borewell, in accordance with an embodiment of the present disclosure.
  • FIG. IB illustrates an exemplary block diagram of the proposed system for determining water level at the borewell, in accordance with an embodiment of the present disclosure
  • the set-up illustrates a borewell 102.
  • the borewell 102 typically extends underground and up to a groundwater level, often submerged under a water level.
  • the borewell 102 on a top side, extends above the ground.
  • the borewell 102 is provided with a borewell cover 104.
  • the borewell cover 104 is a plate like structure adapted to cover an opening of the borewell casing above ground, and can be made of a metal or non-metal, which is strong, rigid, and durable such as, without limitations, metal, concrete, mortar, stone, metal- reinforced concrete and a combination thereof.
  • the borewell cover 104 is generally secured to the opening of the borewell 102 using securing means such as fasteners or using means such as welding.
  • the borewell cover 104 serves to prevent dust and debris from entering the borewell 102, which can potentially cause a blockage to the flow of water.
  • the borewell cover 104 of the present disclosure is preferably made of a material that is suitable for transmission of sound waves, such as a metal.
  • the borewell 102 typically, is coupled with a pump (not shown in figure), which serves to pump water up from the water level, through the borewell 102 and towards the borewell cover 104.
  • An outlet pipe 106 of the borewell 102 can be coupled at the borewell cover 104 or to any other part of the borewell 102 through which the water pumped up from the water level exits the borewell 102.
  • the proposed system 100 for determining the level of water in the borewell can include an impact generator or a sound pulse generator 108 adapted to be hit at a top end of the borewell 102, wherein upon hitting, an impact of the impact generator or a sound pulse generator 108 on the top end of borewell generates a first acoustic signal that travels through a housing of the borewell 102.
  • the impact generator can be selected from any or a combination of an iron rod, hammer, or other objects.
  • the impact generator can be a portable non-mechanized device 108 (also referred to as device 108, herein) can include an in-built tapping mechanism which includes a plunger operated with a pressurized spring and configured to, on actuation, impact on the metal cover of the borewell to generate first acoustic signals for determining water level.
  • the sound pulse generator can be a non-mechanized device comprising a piston and chamber and a sound wave is generated by impacting the piston manually to generate the required acoustic signal.
  • the device 108 can be placed on the borewell cover 104, and near the outlet pipe 106.
  • the system 100 can include an acoustic sensor coupled with amplifier 112 positioned at the top end or cover of the borewell.
  • the acoustic sensor 112 can be configured to detect the first acoustic signal generated by the impact generator or a sound pulse generator 108, and correspondingly generate a first set of data packets. Further, the acoustic sensor 112 can detect a second acoustic signal associated with the reflection of at least a part of the first acoustic signal with a body of the water within the borewell 102, and correspondingly generate a second set of data packets.
  • the acoustic sensor 112 can be a microphone.
  • the system 100 can include a computing unit 120 communicatively coupled to the acoustic sensor 112.
  • the computing unit 120 can include one or more processors operatively coupled with a memory, the memory storing instructions executable by the one or more processors, and configured to receive the first set of data packets and the second set of data packets from the acoustic sensor, and further analyze and process the received first set of data packets and the second set of data packets to determine the level of water inside the borewell 102 with respect to the top end 104 or cover 104, and correspondingly generate a third set of data packets pertaining to the determined level of water.
  • the depth of the borewell 102 or the level of water in the borewell can be determined as a function of the speed of acoustic signals traveling through the cavity/housing of the borewell 102, and time duration between an impact on the borewell cover 104 by the impact generator or a sound pulse genratorl08, and reception by the acoustic sensor 112 of the corresponding reflected second acoustic signals (or, echo).
  • the computing unit 120 can be any or a combination of a remotely located server, cloud-based computing unit, computer, and smart phone.
  • the first set of data packets can include data pertaining to any or a combination of the location of the impact generator or a sound pulse generator 108 with respect to the top end 104 of the borewell 102, location of the acoustic sensor 112 with respect to the top end 104 of the borewell 102, a time stamp of the impact on the top end of the borewell.
  • the second set of data packets can include data pertaining to time stamp of detection of the second acoustic signal by the acoustic sensor 112.
  • the system can include a mobile device 110 including a communication unit 114, being positioned at the top end of the borewell 102.
  • the mobile device 110 can be operatively coupled with the acoustic sensor 112 to communicatively couple the acoustic sensor 112 and mobile device 110 with the computing unit 120.
  • the mobile device 110 can be configured to transmit, to the computing unit 120, the first set of data packets and the second set of data packets, where the computing unit 120 analyzes and processes the data packets to determine the level of water in the borewell 102 with respect to the top end of the borewell. Further, the mobile device 110 can be configured to receive the third set of data packets generated by the computing unit 120.
  • the communication unit 114 can be a transceiver, WiFi Module, GSM Module, and wired and wireless media, but not limited to the likes.
  • the depth of the borewell or the level of water in the borewell 102 can be determined by the computing unit 120 as a function of the speed of first acoustic signals traveling through the cavity/housing of the borewell 102 upon impact by the impact generator 108, the time duration between an impact on the borewell cover 104 by the impact generator 108, and reception by the acoustic sensor 112 or mobile device 110, of the corresponding reflected second acoustic signals (or, echo).
  • the system 100 or the mobile device 110 can include a display unit 116, where the mobile device 110 is configured to process the received third set of data packets, and display the determined level of water on the display unit 116.
  • the mobile device 110 can also include a power unit 118 adapted to provide electrical power to the components of the mobile device, and the non-mechanized impact generator.
  • the power unit 118 can include any or a combination of a battery power or an external power source.
  • FIGs. 2 A and 2B illustrates an exemplary representation of the portable nonmechanized device for generating sound in a housing of the borewell, in accordance with an embodiment of the present disclosure.
  • the device 108 can include: a tapping mechanism (hereinafter, also referred to as “tapper 202”) including a plunger 204 operated using a pressured spring.
  • a tapping mechanism hereinafter, also referred to as “tapper 202”
  • the pressured spring can be configured to activate and deactivate in quick succession to create a staccato of impacts on the borewell cover 104 by the tapper 202.
  • the frequency of impacts can be configured as desired.
  • the computing unit 120 can be configured with a set of instructions to determine, from a received generated sound signal, the depth of water level from the ground level.
  • the depth of the borewell or the level of the water in the borewell 102 can be determined by the computing unit 120 as a function of the speed of the first acoustic signal traveling through the cavity of the borewell 102, the time duration between an impact on the borewell cover 104 by the tapper 202 of the device, and reception by the acoustic sensor 112 or the mobile device 110 of the corresponding reflected second acoustic signal (or, echo).
  • the computing unit can be configured to generate a report of the performance of the borewell and this data can facilitate monitoring and regulation of water consumption at the borewell.
  • the data can also be used to plan measures for recharge of the groundwater at the borewell and study the impact of recharge measures on the groundwater at the borewell.
  • the device 108 can be provisioned with suitable attachments to facilitate attachment of the device 108 to any or a combination of the borewell cover 104, the borewell casing 102, and the outlet pipe 106.
  • FIG. 3 illustrates a flow diagram of the proposed method for determining water level at the borewell, in accordance with an embodiment of the present disclosure
  • the proposed method 300for determining water level at the borewell can include a step 302 of hitting, at a top end of the borewell or cover of the borewell, by an impact generatoror using a sound pulse generator, wherein, upon hitting, an impact of the impact generator or the sound pulse generatorat the top end of the borewell generates a first acoustic signal that travels through a cavity of the borewell.
  • the method 300 can include a step 304 of detecting, at an acoustic sensor positioned at the top end of the borewell, the first acoustic signal generated in the step 302.
  • the method 300 further includes a step of generating a first set of data packets pertaining to the generated first acoustic signal.
  • the method 300 can include a step 306 of detecting, at the acoustic sensor, a second acoustic signal associated with the reflection of at least a part of the first acoustic signal with a body of the water within the borewell.
  • the method 300 further includes a step of generating a second set of data packets pertaining to the generated second acoustic signal.
  • the method 300 can include a step 308 of transmitting, the first set of data packets generated in the step 304, and the second set of data packets generated in the step 306, to a computing unit comprising one or more processors.
  • the acoustic sensor can be communicatively coupled with the computing unit to facilitate the transmission of the first set of data packets to the computing unit.
  • the method 300 can include a step 310 of processing, by the computing unit, the first set of data packets and the second set of data packets transmitted to the computing in the step 308, to determine the level of water inside the borewell with respect to the top end of the borewell.
  • the first set of data packets can include data pertaining to any or a combination of the location of the impact generator with respect to the top end of the borewell, location of the acoustic sensor with respect to the top end of the borewell, a time stamp of the impact on the top end of the borewell.
  • the second set of data packets can include data pertaining to time stamp of detection of the second acoustic signal by the acoustic sensor
  • the depth of the borewell or the level of water in the borewell can be determined by the computing unit as a function of the speed of first acoustic signals traveling through the cavity/housing of the borewell 102 upon impact by the impact generator in the step, the time duration between an impact on the borewell cover 104 by the impact generator, and reception by the mobile device of the corresponding reflected second acoustic signals (or, echo) in the step.
  • a mobile device 110 including the acoustic sensor coupled with amplifier 112 and a communication unit 114 can be positioned at the top end or cover 104 of the borewell 102.
  • the acoustic sensor 112 of the mobile device 110 can detect the first acoustic signals and the second acoustic signals.
  • the communication unit 114 can enable the mobile device 110 to transmit the first set of data packets and the second set of data packets, to the computing unit 120, and further allow the mobile device 110 to receive a third set of data packets pertaining to the determined level of water, from the computing unit 120.
  • the mobile device can include a display unit 116, to display the determined level of water in the borewell.
  • FIG. 4 illustrates an exemplary functional block diagram for a system for determining water level at the borewell, in accordance with an embodiment of the present disclosure.
  • the system includes a borewell whose water level is to be assessed.
  • the device is installed on the cover of the borewell.
  • the impact generatorl08 and the method 302 can be used to generate acoustic signals by hitting or tapping the top metal cap of the borewell 102 in combination with a mobile device 110 with an application which is configured to record reflected acoustic signals at the steps 304 and 306, transmit data to cloud computing unit for analysis and determination of water level and display data pertaining to water level on a computing device 120 or the mobile device 110, through an internet and web based server 402.
  • the present disclosure provides methods including a portable nonmechanised device and a system that can provide data pertaining to a current depth of water level in a borewell at the borewell. This data can facilitate monitoring and regulation of water consumption at the borewell and can also be used to plan measures for recharge of the ground water at the borewell and study the impact of recharge measures on the ground water at the borewell.
  • the proposed invention provides a system and a method for determining water level at a borewell.
  • the proposed invention provides a system and a method to hit or generate an impact on the borewell that can generate acoustic signals.
  • Such the impact generator may be either by using an iron rod or hammer or any other object or a sound pulse generator to generate acoustic signals (sound waves) and echoes with the required frequency/amplitude which can be analyzed to determine the water level in the borewell.
  • the proposed invention provides a portable device (non-mechanized) that can be installed outside the borewell and operated on site at the borewell to generate the acoustic signals.
  • the proposed invention provides a system and a method for tapping the borewell including a portable non-mechanized device that can generate acoustic signals which can be used to determine accurate water level despite structural inconsistencies and imperfections of the borewell.
  • the proposed invention provides a system and a method for generating acoustic signals that are economical, easily implementable, and scalable.

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  • Physics & Mathematics (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Electromagnetism (AREA)
  • Acoustics & Sound (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

La présente invention se rapporte à un système et un procédé permettant de déterminer un niveau d'eau dans un puits de forage (102). Le système et le procédé impliquent un générateur d'impact non mécanisé ou un générateur d'impulsions sonores (108) conçu pour être heurté à une extrémité supérieure du puits de forage (102) afin de générer un premier signal acoustique se déplaçant à travers une enceinte du puits de forage (102). Un capteur acoustique couplé à un amplificateur (112) positionné au sommet du puits de forage détecte le premier signal acoustique, et un second signal acoustique associé à la réflexion d'au moins une partie du premier signal acoustique avec un corps de l'eau à l'intérieur du puits de forage (102). Le système (100) comprend un dispositif mobile (110) permettant de transmettre des données relatives à la position du capteur (112), ainsi qu'au générateur d'impact ou au générateur d'impulsions sonores (108), et un horodatage se rapportant à la détection des premier et second signaux acoustiques, à une unité de calcul (108) qui traite les données afin de déterminer le niveau de l'eau dans le puits de forage (102).
PCT/IB2021/057264 2020-08-08 2021-08-06 Système et procédé de génération de signaux acoustiques dans un puits de forage permettant la détermination du niveau d'eau dans le puits de forage WO2022034458A1 (fr)

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IN202021034086 2020-08-08
IN202021034086 2020-08-08

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PCT/IB2021/057264 WO2022034458A1 (fr) 2020-08-08 2021-08-06 Système et procédé de génération de signaux acoustiques dans un puits de forage permettant la détermination du niveau d'eau dans le puits de forage

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5285388A (en) * 1990-07-16 1994-02-08 James N. McCoy Detection of fluid reflection for echo sounding operation
RU2654370C1 (ru) * 2017-07-25 2018-05-17 Сергей Иванович Остапчук Способ измерения уровня воды в скважине и устройство для его осуществления
US20190049284A1 (en) * 2017-08-09 2019-02-14 Fluke Corporation Calibration bath with acoustic liquid level sensor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5285388A (en) * 1990-07-16 1994-02-08 James N. McCoy Detection of fluid reflection for echo sounding operation
RU2654370C1 (ru) * 2017-07-25 2018-05-17 Сергей Иванович Остапчук Способ измерения уровня воды в скважине и устройство для его осуществления
US20190049284A1 (en) * 2017-08-09 2019-02-14 Fluke Corporation Calibration bath with acoustic liquid level sensor

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