CN117516660A - Self-recording water level gauge - Google Patents
Self-recording water level gauge Download PDFInfo
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- CN117516660A CN117516660A CN202311468662.7A CN202311468662A CN117516660A CN 117516660 A CN117516660 A CN 117516660A CN 202311468662 A CN202311468662 A CN 202311468662A CN 117516660 A CN117516660 A CN 117516660A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 209
- 238000012545 processing Methods 0.000 claims abstract description 9
- 238000012544 monitoring process Methods 0.000 claims description 30
- 230000008859 change Effects 0.000 claims description 7
- 238000013461 design Methods 0.000 claims description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 4
- 230000010354 integration Effects 0.000 claims description 4
- 229910052744 lithium Inorganic materials 0.000 claims description 4
- 238000005259 measurement Methods 0.000 description 17
- 238000000034 method Methods 0.000 description 17
- 238000009434 installation Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 208000034699 Vitreous floaters Diseases 0.000 description 2
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 238000013439 planning Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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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
- G01F23/14—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 measurement of pressure
-
- 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
- G01F23/14—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 measurement of pressure
- G01F23/18—Indicating, recording or alarm devices actuated electrically
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The application provides a self-recording type water level gauge, which comprises a mounting hole, a shell, a detachable end cover and a water guide port, wherein the shell comprises a pressure sensor, a temperature sensor, an intelligent control unit, an internal storage unit and a power supply, the power supply is used for supplying power to the intelligent control unit, the intelligent control unit is used for controlling the pressure sensor and the temperature sensor, and signals of the pressure sensor and the temperature sensor are transmitted back to the intelligent control unit for data processing; the internal storage unit is used for recording and storing water level temperature data. The self-recording water level gauge of the utility model adopts the integral observation mode of the sensor and the recorder, and can accurately monitor the water level and the temperature information. The system can independently operate without participation of other recorders, and downloads data through a built-in USB interface.
Description
Technical Field
The application belongs to the technical field of water level monitoring, and particularly relates to a self-recording water level gauge.
Background
The water level refers to the elevation of the free water surface of a river or other water bodies relative to a certain basal plane, is an important mark for reflecting the change of the water bodies and the water flows and a basic element for hydrologic observation, is also an important basis for flood control, drought resistance, hydraulic engineering management operation, planning and design, construction, water resource scheduling, hydrologic forecasting and other works, and plays an irreplaceable role in the planning, design, construction and other processes of projects such as embankment, reservoir, power station, weir gate, drainage and the like.
At present, water resource and water safety problems have become one of the important factors affecting social, economic and ecological development. The water level data is monitored in real time, and the method has important significance for monitoring and preventing flood disasters and researching climate change. In the field of water level monitoring, monitoring means in the marine field mainly depend on modes of buoys, ship surveys, setting up monitoring stations and the like; the monitoring means of inland lakes and rivers are also based on manual monitoring methods based on hydrologic stations. Different monitoring fields should select a specific method to observe the water level according to the characteristics of the self-monitoring area.
The existing water level monitoring technology mainly comprises two main types of traditional manual water level observation methods and automatic water level monitoring methods by using sensors. The manual observation method is to install a water level gauge and other devices and to carry out manual visual estimation and reading by adopting a leveling instrument or a total station instrument and other tools. The method is simple and convenient, and is widely applied for many years. In recent years, with the continuous development of water science and sensor technology and the demand of automatic hydrologic monitoring under new situation, the sensor automatic monitoring water level method, i.e. the water level gauge is gradually applied to water level monitoring.
The water level gauge is an instrument for measuring water level, and utilizes a sensing element to automatically collect similar indexes for measuring water level and difference value, and then converts an electric signal into water level data. The water level gauge mainly comprises a plurality of forms such as mechanical and photoelectric combination type, pressure type, image recognition, ultrasonic wave type and the like, and can be divided into a float type water level gauge, a radar water level gauge, an ultrasonic wave water level gauge, a laser water level gauge and the like according to the working principle. The float type water level gauge utilizes a float to track the water level to rise and fall, and directly records the water level change in a mechanical transmission or other modes; the radar water level gauge is used for transmitting radar pulses through an antenna, receiving the pulses reflected from the water surface and calculating the water level height through time; the principle of the ultrasonic water level gauge is similar to that of a radar, and the ultrasonic water level gauge converts time into water level height by receiving high-frequency pulse sound waves reflected by the surface of the measured water surface; the pressure type water level gauge measures water pressure through the pressure sensor, and water level measurement is carried out according to the relation between the water pressure and the water level height. Different types of fluviographs have unique advantages and are widely applied to water level and water depth measurement in different scenes.
Currently, water level monitoring technology has made great progress. The manual water level observation has the advantages of no dependence on external environment factors (electric power and instruments), good data reliability and high observation precision. The disadvantage is that the observation error between different observers is larger, and the comparability of data is poor; meanwhile, the method has higher requirements on the monitoring environment and lower efficiency, is difficult to ensure all-weather long-time sequence monitoring, is poor in data observation frequency and real-time performance, and is easily limited by various errors and conditions so as to influence the accuracy, representativeness, continuity and the like of data. The automatic monitoring technology based on the water level gauge has the advantages of real-time automation, stability, continuity and the like, can accurately measure the water level, has higher response speed to the change of the water level, and overcomes the defects of manual observation on the aspects of observation cost, data consistency and real-time performance. However, the water level gauge based on different measurement principles has various problems that the measurement mode is severely limited by environmental conditions, more equipment components are complex to install and the like in water level monitoring.
The float type water level gauge has the advantages that the principle is simple, the data error is relatively small, the float type water level gauge is limited by an instrument, the float type water level gauge is required to be installed in a water level well, and the difficulty of equipment installation and construction is high; the radar type water level gauge belongs to non-contact measurement, and has the limitations mainly in later maintenance, in a cold environment, the antenna is easy to crystallize and freeze, data can be reported wrongly, the antenna needs to be processed at an indefinite time, meanwhile, the installation environment is free from obstacles or floaters, radar waves can mistake the radar waves as the water surface, so that the data is inaccurate, and a certain dead zone exists in measurement; the limitations of the ultrasonic water level gauge and the radar water level gauge are approximately the same, the ultrasonic water level gauge cannot be used in the environment with water mist and water surface obstacles, and the ultrasonic water level gauge is easy to absorb sound waves or interfere with sound wave emission, so that the signal is lost, the accuracy is reduced, and dead zones are easy to occur in measurement; the pressure sensor has high measurement precision, but belongs to immersed measurement of underwater installation and is easily influenced by corrosive water. The water level measuring technology of the sensor is also affected by the environment of the measuring place, especially the observation area with the defects of energy deficiency, inconvenient traffic and inconvenient maintenance, and has the problems of difficult data storage, transmission and downloading.
For this purpose, we propose a self-recording water level gauge to solve the above problems.
Disclosure of Invention
The existing water level monitoring mode is mainly based on manual observation or setting water level measuring instruments around rivers. However, manual observation is too high in labor cost, inconsistent in standard and lack of uniformity. The partial automatic measuring water level gauge has complex and various components and more severe installation conditions; the stability of the equipment is greatly influenced by the water quality of the water body, bad weather and other external environments, and the later maintenance is difficult; the measurement accuracy is also affected by the surface floats and rain and snow weather. In particular in many remote areas of underdeveloped or inconvenient traffic, the installation and maintenance of field measurement devices is more cumbersome. At the same time, the transmission, storage and downloading of data is also a major challenge. Therefore, the invention designs the water level monitoring sensor which is convenient to install and maintain, is suitable for severe environments and has the automatic recording, transmission and downloading technologies.
The application provides a self-recording type water level gauge, including mounting hole, shell, detachable end cover, water guide mouth, the inside of shell includes pressure sensor, temperature sensor, intelligent control unit, inside memory cell and power, the power is used for intelligent control unit to supply power, and temperature sensor disposes inside the water level gauge casing for measure water temperature. The temperature sensing resistance element of the temperature sensor is contacted with the water body, the resistance value is changed, the circuit signal is converted into the temperature through circuit measurement, and the temperature is processed, recorded and stored by the singlechip. The temperature measurement precision of the sensor is +/-0.2 ℃.
The pressure sensor configured by the water level gauge can calculate the observation result according to the relation between the water pressure and the water level height by measuring the water pressure, and the pressure measurement precision of the sensor is very high and is 0.0035% of the full range. The pressure sensor is arranged in the stainless steel shell of the water level gauge and is contacted with the water body through the water guide port at the tail end of the water level gauge. When the water level gauge is used, the water level gauge is directly put into a container or a water body, the water body enters the interior through the water guide port of the shell 4 to be contacted with the sensor, the pressure sensing diaphragm of the pressure sensor is high in water pressure, corresponding voltage is sensed, under the condition that the influence of factors such as water temperature and atmospheric pressure is eliminated, the water pressure, the voltage and the converter are combined to output analog signals representing the water level, the analog signals are connected to the input end of the pressure sensor through a circuit, and the actual water level value is obtained through conversion and the processing such as the pseudo removal and the wave removal of the singlechip.
The intelligent control unit is used for controlling the pressure sensor and the temperature sensor, and signals of the pressure sensor and the temperature sensor are transmitted back to the intelligent control unit for data processing;
the internal storage unit is used for recording and storing water level and temperature data.
In some embodiments, the self-recording water level gauge adopts an integrated observation mode of a pressure sensor, a temperature sensor, an intelligent control unit and an internal storage unit, realizes data observation and recording integration, and is more efficient and convenient for data acquisition. Can be independently operated.
In some embodiments, the pressure sensor and the temperature sensor are integrally designed in the self-recording water level gauge, so that the water level and the temperature data can be measured simultaneously.
In some embodiments, the self-recording water level gauge is used for water level change monitoring. In some embodiments, the water gauge further comprises a USB interface for data download from the internal storage unit with an external connection.
In some embodiments, the self-recording water level gauge is internally designed with a watertight seal.
In some embodiments, the water guide is for contact with a body of water.
In some embodiments, the mounting holes are used for mounting or dismounting the removable end cap.
In some embodiments, the power source is a lithium battery.
The self-recording water level gauge that this application provided has following technical effect:
the project water level gauge adopts an integral observation mode of a sensor and a recorder, and can accurately monitor water level and temperature information. Compared with other types of water level meters, the water level meter can automatically acquire dynamic data of water level and temperature in a long time sequence in real time, and provides powerful and reliable scientific and technical support for water ecology and water safety research. Meanwhile, the sensor is simple in overall design and convenient to install; the intelligent water level monitoring system can independently operate without participation of other recorders and performs data downloading through the built-in USB interface, so that the problems of limitation of a monitoring environment on sensor installation and operation, complicated installation difficulty of monitoring system components and the like are solved, automatic data acquisition, updating, transmission and downloading are realized, the observation cost is greatly reduced, and the water level monitoring efficiency is effectively improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a self-recording water level gauge according to an embodiment of the present invention.
FIG. 2 is a flow chart of the self-recording water level gauge observation of the present invention.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the specific embodiments of the present application, and it is apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
The terminology used in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.
As shown in fig. 1, the application provides a self-recording water level gauge, which comprises a mounting hole 1, a shell 4, a detachable end cover 2 and a water guide port 3, wherein the interior of the shell 4 comprises a pressure sensor, a temperature sensor, an intelligent control unit, an internal storage unit and a power supply, the power supply is used for supplying power to the intelligent control unit,
the intelligent control unit is used for controlling the pressure sensor and the temperature sensor, and signals of the pressure sensor and the temperature sensor are transmitted back to the intelligent control unit for data processing;
the internal storage unit is used for recording and storing water level and temperature data.
In some embodiments, the self-recording water level gauge adopts an integrated observation mode of a pressure sensor, a temperature sensor, an intelligent control unit and an internal storage unit, realizes data observation and recording integration, and is more efficient and convenient for data acquisition. Can be independently operated.
In some embodiments, the pressure sensor and the temperature sensor are integrally designed in the self-recording water level gauge, so that the water level and the temperature data can be measured simultaneously.
In some embodiments, the self-recording water level gauge is used for water level change monitoring.
In some embodiments, the water gauge further comprises a USB interface for data download from the internal storage unit with an external connection.
In some embodiments, the self-recording water level gauge is internally designed with a watertight seal.
In some embodiments, the water guide is for contact with a body of water.
In some embodiments, the mounting holes are used for mounting or dismounting the removable end cap.
In some embodiments, the power source is a lithium battery.
As shown in FIG. 2, an operator can immersely place the self-recording water level gauge at a designated position, contact the water body through a water guide port at the tail end of the water level gauge, the intelligent control unit controls the temperature sensor and the pressure sensor to carry out measurement instructions, then the temperature sensor and the pressure sensor are transmitted back to the intelligent control unit through signals, the intelligent control unit carries out data processing, the data record is stored, and then when the data is needed in the later period, the water level gauge can be connected with external computer and other read-write equipment through a USB port to lead out the data stored in the water level gauge. The battery supplies power to the battery during the whole process.
In some embodiments, the self-recording water level gauge further comprises an internet of things module, and the self-recording water level gauge can be directly transmitted to the user side in real time on line through a mobile network.
Specifically, the immersion type measurement mode is adopted, so that the water level meter housing 4 is made of 316L stainless steel with firm wear-resisting property, has strong corrosion resistance and oxidation resistance, and ensures stable operation in areas with high salinity and high corrosiveness such as wetlands, beaches, oceans and the like.
A pressure sensor: the pressure sensor configured by the water level gauge can calculate the observation result according to the relation between the water pressure and the water level height by measuring the water pressure, and the pressure measurement precision of the sensor is very high and is 0.0035% of the full range. The pressure sensor is arranged in the stainless steel shell of the water level gauge and is contacted with the water body through the water guide port at the tail end of the water level gauge. When the water level gauge is used, the water level gauge is directly put into a container or a water body, the water body enters the interior through the water guide port of the shell 4 to be contacted with the sensor, the pressure sensing diaphragm of the pressure sensor is high in water pressure, corresponding voltage is sensed, under the condition that the influence of factors such as water temperature and atmospheric pressure is eliminated, the water pressure, the voltage and the converter are combined to output analog signals representing the water level, the analog signals are connected to the input end of the pressure sensor through a circuit, and the actual water level value is obtained through conversion and the processing such as the pseudo removal and the wave removal of the singlechip.
Temperature sensor: the temperature sensor is configured inside the water level gauge shell and is used for measuring the temperature of the water body. The temperature sensing resistance element of the temperature sensor is contacted with the water body, the resistance value is changed, the circuit signal is converted into the temperature through circuit measurement, and the temperature is processed, recorded and stored by the singlechip. The temperature measurement precision of the sensor is +/-0.2 ℃.
And an intelligent control unit: the intelligent control unit is a singlechip responsible for controlling automatic measurement of the pressure sensor and the temperature, receives the sensor circuit signal for processing, calculating and quantifying, and is also responsible for transmitting, storing and downloading data.
The pressure sensor measures the water level and is not influenced by the water surface floaters and the weather conditions on water, and the measuring precision is high; the water level sensor is convenient to maintain and disassemble, and can be directly fixed at the river bottom, so that water level data can be directly measured.
And (3) a power supply: the replaceable lithium battery is arranged in the water level meter, and the service life of the battery electric quantity can ensure that the instrument operates for more than 5 years under the condition that the data recording interval is 1 hour.
Internal storage: the water level gauge is internally provided with a large storage capacity of 4M, and can record water level temperature data for a long time.
External interface: the water level gauge is internally provided with a USB interface, can be connected with a computer through a data line, and downloads data through desktop software.
And an intelligent control part: the water level gauge adopts a self-recording working mode, after the instrument is started, the water level gauge is installed at an underwater designated position, namely enters the working mode, the measuring frequency can be set according to the requirements, and data downloading is carried out through a built-in USB interface.
The self-recording water level meter monitors water level and temperature data of various ecosystems such as underground, rivers, lakes, canals, streams, wetlands and the like, can realize real-time automatic continuous acquisition of water level information on a long-time sequence, and an observation mode integrating observation and recording provides unique advantages for recording transmission and downloading of data, and provides data information and technical support for water resource management, water circulation research and flood prevention disasters. 1. The self-recording type water level gauge can be applied to monitoring of water level changes in various ecological environments, realizes self-recording of water level and temperature based on a monitoring mode of integration of a sensor and a recorder, and is beneficial to recording, storing, processing, transmitting and downloading hydrologic information in a monitored area. 2. The self-recording water level gauge can realize the digitization and visualization of the measurement result by combining with the matched software. The water level data is monitored in real time by utilizing the characteristics of high sensitivity and quick response, and the dynamic characteristics of the water level information can be mastered by utilizing the processing software.
It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing description is only a preferred embodiment of the present application and is not intended to limit the present application in any way, and any person skilled in the art may make several changes or modifications to the equivalent embodiments without departing from the scope of the technical solution of the present application, but any simple modification, equivalent changes and modifications to the above embodiments according to the technical matter of the present application still fall within the scope of the technical solution of the present application.
Claims (9)
1. The self-recording water level gauge is characterized by comprising a mounting hole (1), a shell (4), a detachable end cover (2) and a water guide port (3), wherein the interior of the shell (4) comprises a pressure sensor, a temperature sensor, an intelligent control unit, an internal storage unit and a power supply, the power supply is used for supplying power to the intelligent control unit,
the intelligent control unit is used for controlling the pressure sensor and the temperature sensor, and signals of the pressure sensor and the temperature sensor are transmitted back to the intelligent control unit for data processing;
the internal storage unit is used for recording and storing water level and temperature data.
2. The self-recording water level gauge according to claim 1, wherein the self-recording water level gauge adopts an observation mode of integrating a pressure sensor, a temperature sensor, an intelligent control unit and an internal storage unit, so that data observation and recording integration are realized.
3. The self-registering water level gauge of claim 1 wherein the pressure sensor and the temperature sensor are integrally designed within the self-registering water level gauge.
4. The self-registering water level gauge of claim 1 wherein the self-registering water level gauge is adapted for water level change monitoring.
5. The self-recording water level gauge of claim 1, further comprising a USB interface for data download from the internal storage unit with an external connection.
6. The self-registering water level gauge of claim 1 wherein the self-registering water level gauge is internally of a watertight seal design.
7. Self-recording water gauge according to claim 1, characterized in that the water guide (3) is intended to be in contact with a body of water.
8. Self-recording water gauge according to claim 1, characterized in that the mounting hole (1) is used for mounting or dismounting the removable end cap (2).
9. The self-recording water level gauge of claim 1, wherein the power source is a lithium battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202311468662.7A CN117516660A (en) | 2023-11-07 | 2023-11-07 | Self-recording water level gauge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311468662.7A CN117516660A (en) | 2023-11-07 | 2023-11-07 | Self-recording water level gauge |
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| CN117516660A true CN117516660A (en) | 2024-02-06 |
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| CN202311468662.7A Pending CN117516660A (en) | 2023-11-07 | 2023-11-07 | Self-recording water level gauge |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2032652U (en) * | 1987-11-02 | 1989-02-15 | 江西省地质矿产局环境地质大队 | Intellectualized test recorder for underground water lever and temp. |
| JPH08166276A (en) * | 1994-06-02 | 1996-06-25 | Changmin Technol Co Ltd | Method and device for measuring water level in large scale |
| JP2002168674A (en) * | 2000-11-30 | 2002-06-14 | Oyo Corp | Submerged water level meter |
| CN204788565U (en) * | 2015-07-02 | 2015-11-18 | 水利部南京水利水文自动化研究所 | Integration water -stage transmitter |
| CN111537025A (en) * | 2020-05-21 | 2020-08-14 | 水利部交通运输部国家能源局南京水利科学研究院 | Water-soil interface rationalization monitoring devices and reservoir area hydro-fluctuation belt monitoring system based on same |
| CN212030810U (en) * | 2020-05-25 | 2020-11-27 | 天津海洲科技有限公司 | Ultra-low power consumption high sampling rate pressure recording device suitable for ocean monitoring |
| CN217818918U (en) * | 2022-06-17 | 2022-11-15 | 国弘环保仪器（昆山）有限公司 | Digital water level sensor with cavity design and double pressure measurement |
-
2023
- 2023-11-07 CN CN202311468662.7A patent/CN117516660A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2032652U (en) * | 1987-11-02 | 1989-02-15 | 江西省地质矿产局环境地质大队 | Intellectualized test recorder for underground water lever and temp. |
| JPH08166276A (en) * | 1994-06-02 | 1996-06-25 | Changmin Technol Co Ltd | Method and device for measuring water level in large scale |
| JP2002168674A (en) * | 2000-11-30 | 2002-06-14 | Oyo Corp | Submerged water level meter |
| CN204788565U (en) * | 2015-07-02 | 2015-11-18 | 水利部南京水利水文自动化研究所 | Integration water -stage transmitter |
| CN111537025A (en) * | 2020-05-21 | 2020-08-14 | 水利部交通运输部国家能源局南京水利科学研究院 | Water-soil interface rationalization monitoring devices and reservoir area hydro-fluctuation belt monitoring system based on same |
| CN212030810U (en) * | 2020-05-25 | 2020-11-27 | 天津海洲科技有限公司 | Ultra-low power consumption high sampling rate pressure recording device suitable for ocean monitoring |
| CN217818918U (en) * | 2022-06-17 | 2022-11-15 | 国弘环保仪器（昆山）有限公司 | Digital water level sensor with cavity design and double pressure measurement |
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