CN111855014A - Portable automatic measuring instrument and method for underground water temperature - Google Patents
Portable automatic measuring instrument and method for underground water temperature Download PDFInfo
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- CN111855014A CN111855014A CN202010570248.7A CN202010570248A CN111855014A CN 111855014 A CN111855014 A CN 111855014A CN 202010570248 A CN202010570248 A CN 202010570248A CN 111855014 A CN111855014 A CN 111855014A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/04—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
- G01B21/042—Calibration or calibration artifacts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/06—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness specially adapted for measuring length or width of objects while moving
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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
- G01F23/04—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 dip members, e.g. dip-sticks
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Abstract
The invention belongs to the field of environmental monitoring methods and equipment thereof, and particularly relates to a portable underground water temperature automatic measuring instrument and a method thereof.
Description
Technical Field
The invention belongs to the technical field of environmental monitoring, and particularly relates to a portable underground water temperature measuring instrument and a method thereof
Background
Water resources are one of natural environment elements which human beings live and develop, and are important components forming an ecological system, wherein underground water resources play a more important role, and in a wide area in the north of China, under the influence of industrial enterprises, part of underground water is polluted to different degrees, and investigation, monitoring, prevention and control and restoration are urgently needed to be carried out. Meanwhile, geothermal resources of different degrees exist in the north, and an advanced device is urgently needed to master the spatial distribution of the temperature of underground water, so that the water temperature monitoring work of the underground water is more and more important to develop and utilize more reasonably, protect the underground water resources and provide basic data support for exploitation of the geothermal resources.
At present, underground water temperature monitoring comprises two modes of sampling and portable device in-situ monitoring. The water body monitoring of the sampling mode belongs to off-line testing, the temperature environment of the tested water body can change, and the accuracy of the tested water body is weakened to a great extent. The portable underground water temperature measuring device which exists at present can not meet the requirements of remote transmission, field use and occasions such as lack of a power supply and measurement at different depths, and can not meet the requirements of automatic paying-off measurement of water temperatures at different depths.
Disclosure of Invention
In order to solve one of the problems, the invention provides a method for testing water temperatures at different depths by using a portable automatic underground water temperature measuring instrument, which comprises the following steps of placing a measuring line into the underground through a line control module, and simultaneously realizing the processes of automatically setting the line and measuring and calculating relevant values through at least any two of a control module, a meter counter and a measuring probe which are matched with each other.
Furthermore, the paying-off is automatically controlled through a wire conveying wheel motor of the control module, and then the control module controls the wire measuring transmission meter counter and enables the control device and the meter counter to be matched to obtain the length value of the paying-off.
Furthermore, the method can realize the synchronous measurement process of the related characteristic parameters including the temperature from the underground water surface to the water bottom, firstly, a measuring probe is placed on the underground until the measuring probe meets the underground water surface, a measured electrical signal is transmitted to a control module, then the control module comprises a depth value which is matched with a meter counter to control stopping paying off and obtaining the water level, meanwhile, the measuring probe measures the water surface temperature and transmits the water surface temperature to the control module to calculate and display the value of the water surface temperature, the control module continues to control paying off, the measured electrical signal is transmitted to the control module after the probe reaches the water bottom, then, the control module comprises a depth value which is matched with the meter counter to control stopping paying off and obtaining the water level of the water bottom, meanwhile, the measuring probe measures the water bottom temperature and transmits the measured water bottom temperature to the control module to calculate and display the;
And in the process of controlling the paying-off by continuing to control the control module again, the water temperature at a certain depth is measured by controlling the sensor of the measuring probe when the metering sensor pays off at a certain depth, and then the numerical value of the corresponding depth and temperature from the water surface to the water bottom is obtained by comprehensively calculating through the control module.
And further, when the control stops the paying-off, the buzzer is used for alarming, and after the measurement is finished, the wire winding process is controlled by controlling the wire conveying wheel motor.
Further, the method also comprises the processes of preparation before measurement and calibration of the measuring instrument.
Further, the calibration process comprises the following steps: before the measurement is started, a power switch of the measuring instrument is pressed firstly under the state including the withdrawing of the measuring line; then press the calibration switch, make the display screen of control display system display multiunit calibration data at least, according to the calibration scale that the survey line top set up, pull out certain length of survey line from equipment one by one to press the calibration switch after pulling out corresponding distance, after the multiunit data that show on the display screen stops twinkling of a eye, the qualified pilot lamp of calibration lights up, has accomplished calibration work promptly.
Further, the measurement completion wire take-up process comprises the following steps: the control module starts the main wire wheel motor through the main wire wheel motor lead to drive the main wire wheel to rotate and recover the winding measuring wire, and meanwhile, the control module controls the meter counter not to participate in the wire winding work to complete the wire winding.
Furthermore, the method also comprises a buzzer alarming process after the wire winding is finished.
And further, the method also comprises a preparation process before measurement, wherein firstly, the measuring instrument is fixed on a wellhead of the measured groundwater by utilizing a bayonet arranged on a shell of the measuring instrument, so that the centers of the wellheads of the measuring line guide holes in the control module are superposed, the measuring line is ensured to be in a vertical suspension state, and then, the measurement starting scale outside the measuring probe is positioned on the same horizontal plane with the earth surface of the monitoring well.
Further, the measuring instrument also comprises a process of utilizing the automatic positioning system to realize measurement positioning and utilizing the remote automatic transmission system to transmit data.
The beneficial effects of this application are embodied in: the application relates to a professional equipment among groundwater temperature monitoring work to convenient acquisition vertical different positions's accurate reliable groundwater temperature's measured data and analytic data grasp groundwater temperature's spatial distribution, provide basic data support for the reasonable development and utilization of groundwater resource and protection, pollute groundwater restoration, groundwater heat resources exploitation.
(1) The automation of the measuring process is realized in the form of electric winding and unwinding of the measuring process by adopting the combination of the motor, the main spool and the wire conveying wheel; (2) the combination of the sensor of the meter counter and the wire conveying wheel realizes the real-time measurement of the length of the measured wire in the off-line measurement process, eliminates the human error and improves the measurement precision; (3) through setting two conductive contact modes of the measuring probe, the control of the depth of the water surface in the well and the synchronous control of the depth of the well bottom are realized, and the reliability of the device is improved; (4) the temperature sensors are added to different depths of the measuring head, and the data transmission time of the temperature sensors is set through a control program, so that the real-time measurement of the water temperatures at different depths is realized. (5) Through the logic setting of the control module, the calibration of the measuring instrument, the water level measurement and the well depth measurement are completed at one time, an alarm reminding function is set at a key node, and the precision and the automation degree of the measured data of the device are improved.
Compared with the prior art, this application is positive and obvious, and this application is integrated on a device with the measurement of well depth, temperature, makes the measurement process obtain the biggest simplification, has solved the artifical intensity of labour who receives and releases the line among the temperature measurement process, has realized the measurement to the different degree of depth temperature simultaneously, and calibration function through meter rice ware sets up, has promoted measured data's accuracy greatly.
Drawings
FIG. 1: the portable automatic groundwater water temperature measuring instrument is a structure diagram;
FIG. 2: is a structure diagram of the section of the measuring line of the application;
FIG. 3: the structure diagram of the display screen is shown in the application;
FIG. 4: is a structure diagram of the control panel of the application;
FIG. 5: the structure of the measurer of the application;
in the figure; 1-a battery compartment cover; 2-a battery compartment; 3-a lithium battery; 4-power supply lead; 5-a hand-held handle; 6-control panel; 7-control wires; 8-a display screen; 9-display screen wires; 10-a buzzer; 11-a control module; 12-a line-measuring signal conductor; 13-main wheel motor wire; 14-wire-transmission wheel motor lead; 15-meter counter signal conductor; 16-main support and device housing; 17-a main wheel motor and a main wheel; 18-a wire guide wheel; 19-wire guide wheel holder; 20-wire conveying wheel motor and wire conveying wheel; 21-a thread conveying wheel support; 22-meter counter sensor; 23-wire guide holes; 24-measuring line; 25-a measurement probe; 26-a line-testing insulating layer; 27-wire A; 28-wire B; 29-power indicator light; 30-a calibration indicator light; 31-calibration qualified indicator light; 32-water surface temperature measuring indicator light; 33-bottom hole temperature measurement indicator light; 34-a wire-rewinding indicator light; 35-calibration, measurement result display screen; 36-power switch control button; 37-calibration switch control button; 38-water surface temperature measurement switch control button; 39-a switch control button for measuring the temperature of the water at the bottom of the well; 40-a wire take-up switch control button; 41-upper weight; 42-plastic insulating layer; 43-upper conductive measurement contact; 44-water inlet holes; 45-lower conductivity measurement contacts; 46-a movable conductive linkage; 47-lower weight; 48 temperature sensor probe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
The utility model provides a portable groundwater temperature automatic measurement appearance, includes power supply unit, display system, main support and device shell, display system is controlled by control module, measuring probe, survey line, meter rice ware, defeated line device, control module, measuring probe, meter rice ware, accuse line device with control module electric connection receives control module's control, survey line one end is connected measuring probe, the other end of survey line is walked around meter rice ware or accuse line device, measuring probe with meter rice ware or accuse line device cooperation are in order to realize the different characteristics of automatic measurement groundwater. The line control device comprises a line conveying device and a main line wheel device, and the line conveying device and the main line wheel device are controlled in a combined mode to achieve automatic line measuring and retracting.
The method for measuring the water temperature by using the portable automatic groundwater water temperature measuring instrument and the related steps related to the method are described below with reference to the accompanying drawings 1-5.
The calibration process steps involved in the method of the invention include the following: before the measurement is started, a power switch of the measuring instrument is pressed firstly under the state including the withdrawing of the measuring line; then, the calibration switch is pressed down, at least a display screen of the control display system displays a plurality of groups of calibration data, the measuring line is pulled out from the equipment by a certain length one by one according to the calibration scale arranged at the top end of the measuring line 24, the calibration switch 37 is pressed down after the corresponding distance is pulled out, and after the plurality of groups of data displayed on the display screen 8 stop flashing, the calibration qualified indicator lamp 31 is lighted up, so that the calibration work is finished.
In the preparation process before measurement, the bayonet arranged on the shell 16 of the measuring instrument is utilized to fix the measuring instrument on the wellhead of the measured groundwater, so that the centers of the wellheads of the measuring line guide holes in the control module are superposed, the measuring line 24 is ensured to be in a vertical suspension state, and then the measurement starting scale outside the measuring probe 25 and the ground surface of the monitoring well are in the same horizontal plane.
And (4) calibrating the measuring instrument, wherein the measuring instrument is calibrated firstly before the measurement is started, and the calibration is carried out under the condition that the electric quantity of the lithium battery 3 in the equipment battery bin 2 is sufficient. And (5) recovering all the measuring wires to the main wire wheel in the equipment and then starting calibration. First, the power switch button 36 is pressed, at which time the power indicator light 29 flashes; then, the calibration switch button 37 is pressed, at which time the calibration indicator 30 flashes, while the display screen 8 displays three sets of calibration data, 1m, 2m and 5m flashing simultaneously. In the calibration process, the lengths of 1m, 2m and 5m are pulled out from the equipment one by one according to the calibration scale arranged at the top end of the measuring line 24, the calibration switch 37 is pressed after the corresponding distance is pulled out, and after the three groups of data displayed on the display screen 8 stop flashing, the calibration qualified indicator lamp 31 is lighted up, so that the calibration work is completed.
The method is prepared before measurement, and the electric quantity of the lithium battery 3 in the equipment battery compartment 2 is firstly confirmed to be sufficient before the measurement is started. After reaching the well position of the monitoring well, the measuring instrument is fixed on the well head of the monitoring well by utilizing the bayonet arranged on the equipment shell 16, so that the measuring line guide hole 23 of the measuring instrument is coincided with the center of the well head of the monitoring well, the measuring line 24 is ensured to be in a vertical suspension state, and the measuring initial scale (the bottom end position of the upper conductive measuring contact plate 43) outside the measuring probe 25 and the ground surface of the monitoring well are positioned on the same horizontal plane with the assistance of the steel tape.
Measuring the water temperature, pressing a water temperature measuring switch control button 38 to start a water temperature measuring program, flashing a water temperature measuring indicator lamp 32 at the moment, enabling a wire conveying wheel motor and a wire conveying wheel 14 to start rotating, putting a measuring probe 25 and a measuring wire 24 into a monitoring well, enabling a meter counter sensor 22 to be firmly pressed on the measuring wire 24 and rotate along with the measuring wire to generate pulse signals through the control of a wire conveying wheel support 21, transmitting the signals to a control module 11 through a meter counter signal lead 14, and displaying the length of the put lead on a display screen 8 in real time through the control module 11 and a display screen lead 9. After the probe 25 to be measured and the temperature sensor probe 48 contact underground water in the monitoring well, the underground water enters the plastic insulating layer 42 through the water inlet 44, the lower conductive measuring contact 45 and the upper conductive measuring contact 45 in the measuring probe 25 are communicated by utilizing the conductivity of the underground water, the measuring lead 24 transmits a high-resistance electric signal to the control module 11 through the wire measuring signal wire 12, at the moment, the control module 11 immediately stops the rotation of the wire transmission wheel motor and the wire transmission wheel 14 through the wire transmission wheel motor 14, at the moment, the buzzer 10 starts to sound an alarm for completing the measurement, and the data transmitted by the temperature sensor displayed by the display screen 8 is water temperature data at the water surface in the well.
And (3) measuring the water temperature at the bottom of the well, after the water level measurement is finished, pressing a control button 39 of a well depth water temperature measurement switch to start a well depth measurement program, lighting a well depth water temperature measurement indicator lamp 33 at the moment, continuously rotating a wire conveying wheel motor and a wire conveying wheel 14, lowering a measurement probe 25, a temperature sensor probe 48 and a measuring wire 24 into the monitoring well, continuously generating pulse signals by a meter sensor 22 and transmitting the pulse signals to a control module 11, continuously displaying the length of the lowered conducting wire in real time on a display screen 8, and controlling the length of the guided wire to transmit data once every 2m of the temperature sensor is increased by the control module. The lower weight 47 of the probe 25 to be measured stops when contacting the bottom of the monitoring well, the upper weight 41 continues to move downwards along the movable conductive link mechanism 46 under the action of gravity, until the movable conductive link mechanism 46 contacts the upper conductive measuring contact 43, the measuring lead 24 transmits a low-resistance electrical signal to the control module 11 through the measuring signal line 12, the control module 11 stops the rotation of the wire wheel motor and the wire wheel 14 immediately, the buzzer 10 starts to sound the alarm of the measurement completion, the control system automatically corrects the measured data (adding the distance from the bottom end of the upper conductive measuring contact 43 to the bottom of the lower weight 47), the data displayed by the display screen 8 is the water temperature data at the bottom of the well, the water temperature measurement from the water surface to the bottom of the well and at the depth of 2m in the well is completed, and the depth-temperature curve is drawn in real time through the control module, to facilitate analysis. Since the measurement interval is set by the control module according to the data transmitted by the meter length sensor, the measurement interval can be considered as being set.
After the measurement is finished, the wire take-up switch control button 40 is pressed down after the water temperatures at different depths are measured, the wire take-up indicator lamp 34 is flashed, the control module 11 starts the main wire wheel motor through the main wire wheel motor lead 13 to drive the main wire wheel 17 to rotate, the meter counter sensor 22 is controlled by the wire conveying wheel support 21 to be lifted up at the moment, no pulse signal is generated any more, the measurement lead 24 is recovered and wound to the main wire wheel 17 along the measurement lead hole 23 and the lead wheel 18, and after all the measurement leads 24 are recovered, the buzzer 10 gives an alarm to prompt, the power supply is turned off by pressing the power switch control button 36, and the measurement work is finished; the measurement completion wire take-up process comprises the following steps: enabling the control module to start a main wire wheel motor through a main wire wheel motor lead 13 to drive a main wire wheel 17 to rotate to recover the winding measuring wire, and simultaneously controlling the meter counter to be not involved in the wire collecting work through the control module 21 to complete the wire collecting; and a buzzer alarming process is also included after the wire take-up is finished.
If necessary, the equipment control module can be improved, and a GPS or Beidou automatic positioning system and a measured data remote automatic transmission system are added to increase the practicability of the equipment.
The purpose of this application is that it is not strong in order to solve current groundwater temperature monitoring facilities suitability, and the monitoring process needs artifical unwrapping wire, especially can not measure the scheduling problem to the different degree of depth temperature in a well. The application provides a professional equipment of different degree of depth groundwater temperatures of simultaneous automatic monitoring mainly realizes through following technique.
The measuring probe is set to be in a mode of communicating with water and releasing communication with a contact piece, a double-wire insulated cable without elasticity is used as a measuring wire, and the measuring wire is wound on a main wire wheel and connected with a control module after passing through a wire conveying wheel (and a meter counter sensor) and a wire guide wheel respectively. The device is powered by a lithium battery arranged in the device, and is respectively connected with a control panel, a display, a buzzer alarm, a meter counter sensor, a temperature sensor, a main wire wheel motor and a wire conveying wheel motor through a control module.
In the process of measuring the water temperature, a temperature sensor is additionally arranged on the measuring probe, and the temperature sensor displays real-time data on a display screen through a control module.
The measuring line is automatically lowered into the monitoring well through the rotation of the wire conveying wheel motor and the gravity of the measuring probe, meanwhile, the measuring line drives the meter counter sensor to record the pay-off distance data, and the specific numerical value is displayed on the display screen in real time through the control module; after underground water in the monitoring well is treated, the measuring probe transmits an electric signal with large resistance back, the device automatically stops paying off at the moment, the buzzer gives an alarm, the data displayed by the line measuring sensor is the water level burial depth data, the data displayed by the temperature sensor is the surface temperature of the underground water, and the program is set through the control module to record the data.
After an instruction of continuously measuring the well depth is given manually, the wire conveying wheel continues paying off, an electric signal with small resistance is transmitted back after the probe reaches the well bottom, the device automatically stops paying off at the moment, the buzzer gives an alarm, the data displayed by the wire measuring sensor is well depth data, the temperature sensor is arranged through the control module in the process that the measuring wire goes downwards to transmit the temperature, the temperature sensor transmits data once when the meter length sensor displays 2 meters of paying off, and meanwhile, the water temperature at the well bottom depth is recorded when the paying off stops. After the measurement is finished, a wire take-up instruction is manually given, the main line wheel motor starts to work to complete wire take-up, the measurement is finished, and finally, a depth-temperature curve graph is automatically drawn through the control module.
Through the arrangement, the automation and integration of water temperature measurement of well depth, well water surface, different depths and well bottom depth are realized, the measurement precision is improved, a large amount of labor is saved, and the water level monitoring efficiency is improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. A method for measuring water temperature by using a portable automatic underground water temperature measuring instrument is characterized by comprising the following steps of placing a measuring line to underground through a line control module, and simultaneously, realizing automatic line releasing and measuring and calculating the process of relevant numerical values through the mutual cooperation of at least any two of a control module, a meter counter and a measuring probe so as to test the water temperature at different depths.
2. The method of claim 1, wherein: firstly, the wire feeding wheel motor of the control module automatically controls the paying-off, and then the control module controls the wire measuring transmission meter counter and enables the control device and the meter counter to be matched to obtain the length value of the paying-off.
3. The method of claim 2, wherein: the method can realize the synchronous measurement process of relevant characteristic parameters including temperature from the underground water surface to the water bottom, firstly, a measuring probe is placed on the underground until meeting the underground water surface, a measured electrical signal is transmitted to a control module by the measuring probe, then the control module comprises a depth value which is matched with a meter counter to control stopping paying off and obtaining the water level, meanwhile, the measuring probe measures the water surface temperature and transmits the water surface temperature to the control module to calculate and display the value of the water surface temperature, the control module continues to control paying off, the measured electrical signal is transmitted to the control module after the probe reaches the water bottom, then, the control module comprises a depth value which is matched with the meter counter to control stopping paying off and obtaining the water level of the water bottom, and meanwhile, the measuring probe measures the water bottom temperature and transmits the value which is calculated and displayed on the water;
And in the process of controlling the paying-off by continuing to control the control module again, the water temperature at a certain depth is measured by controlling the sensor of the measuring probe when the metering sensor pays off at a certain depth, and then the numerical value of the corresponding depth and temperature from the water surface to the water bottom is obtained by comprehensively calculating through the control module.
4. The method of claim 3, wherein: when the control stops the paying-off, the buzzer is used for alarming, and after the measurement is finished, the wire winding process is controlled by controlling the wire conveying wheel motor.
5. The method of claim 1, wherein: the method also comprises the processes of preparation before measurement and calibration of the measuring instrument.
6. The method of claim 5, wherein: the calibration process comprises the following steps: before the measurement is started, a power switch of the measuring instrument is pressed firstly under the state including the withdrawing of the measuring line; then press the calibration switch, make the display screen of control display system display multiunit calibration data at least, according to the calibration scale that the survey line top set up, pull out certain length of survey line from equipment one by one to press the calibration switch after pulling out corresponding distance, after the multiunit data that show on the display screen stops twinkling of a eye, the qualified pilot lamp of calibration lights up, has accomplished calibration work promptly.
7. The method of claim 4, wherein: the measurement completion wire take-up process comprises the following steps: the control module starts the main wire wheel motor through the main wire wheel motor lead to drive the main wire wheel to rotate and recover the winding measuring wire, and meanwhile, the control module controls the meter counter not to participate in the wire winding work to complete the wire winding.
8. The method of claim 7, wherein: and a buzzer alarming process is also included after the wire take-up is finished.
9. The method of claim 4, wherein: the method comprises the steps of firstly fixing the measuring instrument on a wellhead of the measured groundwater by utilizing a bayonet arranged on a shell of the measuring instrument, enabling the centers of wellheads of measuring line guide holes in a control module to coincide, ensuring that a measuring line is in a vertical suspension state, and then enabling a measurement starting scale outside a measuring probe to be in the same horizontal plane with the ground surface of a monitoring well.
10. A method according to any one of claims 1-9, characterized by: the measuring instrument also comprises a process of realizing measurement positioning by using the automatic positioning system and transmitting data by using the remote automatic transmission system.
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| CN202010570248.7A CN111855014A (en) | 2020-06-21 | 2020-06-21 | Portable automatic measuring instrument and method for underground water temperature |
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| CN202010570248.7A CN111855014A (en) | 2020-06-21 | 2020-06-21 | Portable automatic measuring instrument and method for underground water temperature |
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| CN115165023A (en) * | 2021-04-02 | 2022-10-11 | 北京市水科学技术研究院 | Electric water level measuring device |
| CN118067205A (en) * | 2024-04-22 | 2024-05-24 | 中国地质调查局水文地质环境地质调查中心 | Geothermal water level and temperature intelligent detection system and method |
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| CN118730244A (en) * | 2024-06-24 | 2024-10-01 | 北京石油化工学院 | A mud level detection device in a well and a method of using the same |
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