Sensor-based liquid level intelligent display device and method

The intelligent liquid level display device, which uses sensors arranged in parallel, solves the problems of low accuracy and insufficient real-time performance of liquid level gauges. It enables simultaneous detection of liquid level and temperature, as well as low liquid level alarm, thus meeting the accuracy and real-time requirements of modern industry.

CN122108311APending Publication Date: 2026-05-29SHENZHEN HAOYUE ELECTRONICS CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHENZHEN HAOYUE ELECTRONICS CO LTD
Filing Date
2026-03-04
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing level gauges suffer from problems such as low accuracy, susceptibility to human factors, and inability to monitor in real time, making it difficult to meet the accuracy and real-time requirements of modern industry for level measurement.

Method used

The device employs a sensor-based intelligent liquid level display system. Liquid level and temperature sensors are mounted side-by-side via a bottom screw, displaying liquid level height, temperature, and abnormal information on a split screen. Low liquid level alarms and early warnings are achieved through threshold comparison or no threshold comparison.

Benefits of technology

It enables simultaneous detection of liquid level and temperature, improves measurement accuracy, reduces installation complexity, and provides accurate alarm for low liquid level and early warning of temperature changes.

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Abstract

The application provides a kind of sensor-based liquid level intelligent display device and method.The device includes: liquid level meter main body, display module, bottom screw, sensor module and alarm module;Method includes: through sensor module obtains liquid level height and real-time temperature, and with preset liquid level height early warning threshold and preset temperature early warning threshold, liquid level height and real-time temperature are compared with corresponding preset liquid level height early warning threshold and preset temperature early warning threshold respectively, and monitoring processing is implemented according to threshold comparison result;The application is realized by bottom screw to facilitate installation, liquid level sensor and temperature sensor are arranged side by side to realize liquid level and temperature detection simultaneously, corresponding information is displayed by split screen, low liquid level accurate alarm is realized by threshold comparison or no threshold fixed liquid level height comparison, at the same time, liquid level and temperature change are detected to realize early warning, so that sensor-based liquid level intelligent display is realized.
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Description

Technical Field

[0001] This application relates to the field of liquid level measurement and indication technology, and more specifically, to a sensor-based intelligent liquid level display device and method. Background Technology

[0002] Liquid level gauges are commonly used measuring devices in industrial production and daily life to monitor the liquid level in liquid containers. Traditional liquid level gauges mainly judge the liquid level by visually observing the liquid level. This method is simple and intuitive, but it has disadvantages such as low accuracy, susceptibility to human factors, and inability to monitor in real time. With the development of industrial automation, the requirements for the accuracy and real-time performance of liquid level measurement are becoming increasingly higher, and traditional liquid level gauges can no longer meet the needs of modern industry. In recent years, various electronic level gauges have appeared on the market. Float-type level gauges indicate liquid level by the up-and-down movement of a float. They are simple in structure but have low accuracy and are easily affected by liquid viscosity and density. Ultrasonic level gauges measure liquid level using the principle of ultrasonic wave reflection, offering high accuracy but are expensive and sensitive to liquid surface fluctuations. Radar level gauges measure liquid level by electromagnetic wave reflection and are suitable for high-temperature and high-pressure environments, but the equipment is complex and difficult to install and maintain. Capacitive level gauges reflect liquid level by measuring changes in capacitance, but they have requirements on the dielectric constant of the liquid and their applicability is limited. Therefore, there is an urgent need for an intelligent liquid level detection and display method that can improve monitoring accuracy, reduce installation complexity, and achieve simultaneous measurement of liquid level and temperature, as well as low-level alarm.

[0003] Effective technical solutions are urgently needed to address the above problems. Summary of the Invention

[0004] The purpose of this application is to provide a sensor-based intelligent liquid level display device and method, which can be easily installed by a bottom screw. The liquid level sensor and temperature sensor are arranged side by side to realize simultaneous detection of liquid level and temperature, and the corresponding information is displayed on a split screen. The device can realize accurate low liquid level alarm by threshold comparison or fixed liquid level height comparison without threshold. At the same time, it can realize early warning by detecting changes in liquid level and temperature, thereby realizing sensor-based intelligent liquid level display.

[0005] In a first aspect, this application provides a sensor-based intelligent liquid level display device, comprising: The liquid level gauge body (1), display module (2), bottom screw (3), sensor module (4) and alarm module (5); The liquid level gauge body (1) is used to fix the display module (2), bottom screw (3), sensor module (4) and alarm module (5), and to store the transmission lines of the display module (2) and sensor module (4); The display module (2) is used to display the liquid level, temperature and abnormal information in real time; The bottom screw (3) is used to connect and fix the sensor module to the liquid level gauge body; The sensor module (4) is used to monitor the liquid level and temperature in real time; The alarm module (5) is used for alarms of abnormal liquid level or temperature.

[0006] Optionally, in the sensor-based intelligent liquid level display device described in this application, the display module (2) is used to display the liquid level height, temperature, and abnormal information in real time, including: First display screen (21), second display screen (22) and third display screen (23); The first, second, and third display screens are arranged horizontally and are used to display liquid level, temperature, and abnormal information in real time, respectively.

[0007] Optionally, in the sensor-based intelligent liquid level display device described in this application, the sensor module (4) is used to monitor the liquid level height and temperature in real time, including: Liquid level sensor and temperature sensor; The liquid level sensor and temperature sensor are laterally distributed inside the bottom screw, and are used to monitor the liquid level and temperature in real time.

[0008] Optionally, in the sensor-based intelligent liquid level display device described in this application, the alarm module (5) is used for alarming abnormal liquid level or temperature, including: Indicator light (51), buzzer (52), and mounting base (53); The indicator light is installed directly above the mounting base, and the buzzer is installed on the front of the mounting base for audible and visual alarm.

[0009] Secondly, this application provides a sensor-based intelligent liquid level display method, comprising the following steps: The liquid level and real-time temperature are obtained through a sensor module; Obtain preset liquid level warning thresholds and preset temperature warning thresholds; The liquid level and real-time temperature are compared with the corresponding preset liquid level warning threshold and preset temperature warning threshold, respectively, and monitoring and processing are carried out based on the threshold comparison results.

[0010] Optionally, in the sensor-based intelligent liquid level display device described in this application, the step of comparing the liquid level height and real-time temperature with corresponding preset liquid level height warning thresholds and preset temperature warning thresholds, and performing monitoring processing based on the threshold comparison results, includes: The liquid level height and real-time temperature are compared with the corresponding preset liquid level height warning threshold and preset temperature warning threshold, respectively. If the liquid level is less than or equal to the preset liquid level warning threshold or the real-time temperature is greater than or equal to the preset temperature warning threshold, an alarm will be output through the alarm module and displayed through the display module. Conversely, real-time monitoring is performed through the sensor module.

[0011] Optionally, the sensor-based intelligent liquid level display method described in this application further includes: If it fails to obtain the preset liquid level height warning threshold, the liquid level height will be compared with the installation height of the bottom screw. If the liquid level is less than or equal to the installation height of the bottom screw, an alarm will be output through the alarm module and displayed through the display module. If the liquid level is greater than the installation height of the bottom screw, real-time monitoring is performed via the sensor module.

[0012] Optionally, the sensor-based intelligent liquid level display method described in this application further includes: Obtain the rate of change of liquid level and the rate of change of temperature within a preset time period; The liquid level change rate and temperature change rate are compared with the corresponding preset liquid level change warning threshold and preset temperature change warning threshold. If the rate of change of liquid level height is greater than or equal to the preset liquid level height change warning threshold or the rate of change of temperature is greater than or equal to the preset temperature change warning threshold, an alarm will be output through the alarm module and displayed through the display module. Conversely, real-time monitoring is performed through the sensor module.

[0013] Optionally, in the sensor-based intelligent liquid level display method described in this application, the reverse step involves real-time monitoring performed by the sensor module, and then further includes: The weighted summation of the liquid level change rate and the temperature change rate yields the monitored change parameters. The monitored change parameters are compared with the preset monitoring change early warning threshold. If the monitored change parameter is less than or equal to the preset monitoring change early warning threshold, then real-time monitoring is performed; If the monitored change parameter is greater than the preset monitoring change early warning threshold, an alarm will be output through the alarm module and displayed through the display module.

[0014] Optionally, the sensor-based intelligent liquid level display method described in this application further includes: Obtain the cumulative alarm duration output by the alarm module and compare it with the preset cumulative alarm record threshold. If the cumulative alarm duration is greater than or equal to the preset cumulative alarm recording threshold, the alarm data will be stored. If the cumulative alarm duration is less than the preset cumulative alarm record threshold, then continuous monitoring will be performed.

[0015] As can be seen from the above, the sensor-based intelligent liquid level display device and method provided in this application facilitates installation through a bottom screw, and the liquid level sensor and temperature sensor are arranged side by side to realize simultaneous detection of liquid level and temperature, displaying the corresponding information on a split screen. It achieves accurate low liquid level alarm through threshold comparison or fixed liquid level height comparison without threshold, and at the same time, it detects changes in liquid level and temperature to provide early warning, thereby realizing sensor-based intelligent liquid level display.

[0016] Other features and advantages of this application will be set forth in the following description and will be apparent in part from the description or may be learned by practicing embodiments of this application. The objectives and other advantages of this application may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A device diagram of a sensor-based intelligent liquid level display device provided for embodiments of this application; Figure 2 A display module diagram of a sensor-based intelligent liquid level display device is provided for embodiments of this application; Figure 3 A diagram of an alarm module device for a sensor-based intelligent liquid level display device provided in this application embodiment; Figure 4 A flowchart illustrating a sensor-based intelligent liquid level display method provided in this application embodiment; Figure 5 A high-level flowchart of a sensor-based intelligent liquid level display method provided in this application embodiment. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0020] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] Please refer to Figure 1 , Figure 1 This is a device diagram of a sensor-based intelligent liquid level display device according to some embodiments of this application. The sensor-based intelligent liquid level display device includes: The liquid level gauge body (1), display module (2), bottom screw (3), sensor module (4) and alarm module (5); The liquid level gauge body (1) is used to fix the display module (2), bottom screw (3), sensor module (4) and alarm module (5), and to store the transmission lines of the display module (2) and sensor module (4); The display module (2) is used to display the liquid level, temperature and abnormal information in real time; The bottom screw (3) is used to connect and fix the sensor module to the liquid level gauge body; The sensor module (4) is used to monitor the liquid level and temperature in real time; The alarm module (5) is used for alarms of abnormal liquid level or temperature.

[0022] It should be noted that the intelligent liquid level display device mainly consists of a liquid level gauge body, a bottom screw, a sensor module, a display module, and an alarm module. The liquid level gauge body is used to fix and support the entire device. The bottom screw is used to install on old equipment to replace the original screw. The sensor module is integrated into the bottom screw and is used to measure the liquid level height and temperature. The display module is installed on the liquid level gauge body and is used to display the liquid level height and temperature data. The alarm module is used to issue an alarm when the liquid level is lower than the set value.

[0023] Please refer to Figure 2 , Figure 2 This is a diagram of a display module of a sensor-based intelligent liquid level display device according to some embodiments of this application. According to an embodiment of the present invention, the display module (2) is used to display liquid level height, temperature, and abnormal information in real time, including: First display screen (21), second display screen (22) and third display screen (23); The first, second, and third display screens are arranged horizontally and are used to display liquid level, temperature, and abnormal information in real time, respectively.

[0024] It should be noted that the split-screen setting allows for the simultaneous or separate display of liquid level, temperature, and abnormal information.

[0025] According to an embodiment of the present invention, the sensor module (4) is used to monitor the liquid level and temperature of the liquid in real time, including: Liquid level sensor and temperature sensor; The liquid level sensor and temperature sensor are laterally distributed inside the bottom screw, and are used to monitor the liquid level and temperature in real time.

[0026] It should be noted that the level sensor and temperature sensor are installed side by side inside the bottom screw, and the bottom of the sensor is flush with the bottom of the mounting cavity of the bottom screw.

[0027] Please refer to Figure 3 , Figure 3 This is a diagram of an alarm module device for a sensor-based intelligent liquid level display device according to some embodiments of this application. According to an embodiment of the present invention, the alarm module (5) is used for alarming abnormal liquid level or temperature, and includes: Indicator light (51), buzzer (52), and mounting base (53); The indicator light is installed directly above the mounting base, and the buzzer is installed on the front of the mounting base for audible and visual alarm.

[0028] It should be noted that alarm information is accurately transmitted through audible and visual alarms.

[0029] Please refer to Figure 4 , Figure 4 This is a flowchart of a sensor-based intelligent liquid level display method according to some embodiments of this application. The present invention also discloses a sensor-based intelligent liquid level display method for use in terminal devices, such as computers and mobile phones. This sensor-based intelligent liquid level display method includes the following steps: S21. Obtain the liquid level and real-time temperature through the sensor module; S22. Obtain the preset liquid level warning threshold and the preset temperature warning threshold; S23. The liquid level and real-time temperature are compared with the corresponding preset liquid level warning threshold and preset temperature warning threshold, respectively, and monitoring processing is carried out based on the threshold comparison results.

[0030] It should be noted that, in order to achieve real-time monitoring and alarm of liquid level and temperature, sensors are used for real-time monitoring and comparison with corresponding preset thresholds. Based on the comparison results, an alarm is triggered or real-time monitoring continues.

[0031] According to an embodiment of the present invention, the step of comparing the liquid level height and real-time temperature with corresponding preset liquid level height warning thresholds and preset temperature warning thresholds, and performing monitoring processing based on the threshold comparison results, includes: The liquid level height and real-time temperature are compared with the corresponding preset liquid level height warning threshold and preset temperature warning threshold, respectively. If the liquid level is less than or equal to the preset liquid level warning threshold or the real-time temperature is greater than or equal to the preset temperature warning threshold, an alarm will be output through the alarm module and displayed through the display module. Conversely, real-time monitoring is performed through the sensor module.

[0032] It should be noted that an early warning will be issued when either the liquid level or the temperature exceeds the threshold, or when both exceed the threshold; continuous monitoring will only be performed when neither exceeds the threshold.

[0033] According to an embodiment of the present invention, it further includes: If it fails to obtain the preset liquid level height warning threshold, the liquid level height will be compared with the installation height of the bottom screw. If the liquid level is less than or equal to the installation height of the bottom screw, an alarm will be output through the alarm module and displayed through the display module. If the liquid level is greater than the installation height of the bottom screw, real-time monitoring is performed via the sensor module.

[0034] It should be noted that if the user does not set a corresponding threshold to prevent the liquid level from dropping but there is no threshold to compare it with, resulting in a leakage alarm, the real-time monitored liquid level height will be compared with the installation height of the bottom screw, thus achieving a comparison without a threshold and providing timely warnings.

[0035] According to an embodiment of the present invention, it further includes: Obtain the rate of change of liquid level and the rate of change of temperature within a preset time period; The liquid level change rate and temperature change rate are compared with the corresponding preset liquid level change warning threshold and preset temperature change warning threshold. If the rate of change of liquid level height is greater than or equal to the preset liquid level height change warning threshold or the rate of change of temperature is greater than or equal to the preset temperature change warning threshold, an alarm will be output through the alarm module and displayed through the display module. Conversely, real-time monitoring is performed through the sensor module.

[0036] It should be noted that, in order to achieve early warning of abnormal liquid level or temperature, the rate of change of liquid level and temperature is evaluated based on real-time monitoring. The rate of change of liquid level is the ratio of the absolute value of the difference between two adjacent time points to the liquid level at the previous time point, and the rate of change of temperature is the ratio of the absolute value of the difference between two adjacent time points to the temperature at the previous time point. Then, it is compared with the corresponding thresholds, and an alarm is triggered if either exceeds the threshold.

[0037] According to an embodiment of the present invention, the converse step involves performing real-time monitoring via a sensor module, and further includes: The weighted summation of the liquid level change rate and the temperature change rate yields the monitored change parameters. The monitored change parameters are compared with the preset monitoring change early warning threshold. If the monitored change parameter is less than or equal to the preset monitoring change early warning threshold, then real-time monitoring is performed; If the monitored change parameter is greater than the preset monitoring change early warning threshold, an alarm will be output through the alarm module and displayed through the display module.

[0038] It should be noted that the weight of liquid level changes and temperature changes varies in different application scenarios. In order to more accurately assess the comprehensive early warning of liquid level changes and temperature changes, the obtained liquid level change rate and temperature change rate are weighted and summed according to the application scenario. Through threshold comparison, a comprehensive early warning of liquid level and temperature changes is achieved.

[0039] According to an embodiment of the present invention, it further includes: Obtain the cumulative alarm duration output by the alarm module and compare it with the preset cumulative alarm record threshold. If the cumulative alarm duration is greater than or equal to the preset cumulative alarm recording threshold, the alarm data will be stored. If the cumulative alarm duration is less than the preset cumulative alarm record threshold, then continuous monitoring will be performed.

[0040] It should be noted that when the equipment remains in a low-level alarm state for an extended period and is not maintained or repaired in a timely manner, resulting in equipment damage, in order to prevent shirking responsibility and to define liability, real-time liquid level height and alarm data can be stored for retrieval and traceability.

[0041] Please refer to Figure 5 , Figure 5This is a high-level flowchart of a sensor-based intelligent liquid level display method in some embodiments of this application.

[0042] This invention discloses a sensor-based intelligent liquid level display device and method. It is easy to install using a bottom screw, and the liquid level sensor and temperature sensor are arranged side by side to detect the liquid level and temperature simultaneously. The corresponding information is displayed on a split screen. The device can accurately alarm for low liquid level by comparing thresholds or comparing fixed liquid level heights without thresholds. At the same time, it can detect changes in liquid level and temperature to provide early warning, thereby realizing sensor-based intelligent liquid level display.

[0043] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods, such as: multiple units or components can be combined, or integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the various components shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be electrical, mechanical, or other forms.

[0044] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units. They may be located in one place or distributed across multiple network units. Some or all of the units may be selected to achieve the purpose of this embodiment according to actual needs.

[0045] In addition, in the various embodiments of the present invention, each functional unit can be integrated into one processing unit, or each unit can be a separate unit, or two or more units can be integrated into one unit; the integrated unit can be implemented in hardware or in the form of hardware plus software functional units.

[0046] Those skilled in the art will understand that all or part of the steps of the above method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a readable storage medium. When the program is executed, it performs the steps of the above method embodiments. The aforementioned storage medium includes various media capable of storing program code, such as mobile storage devices, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0047] Alternatively, if the integrated units of this invention are implemented as software functional modules and sold or used as independent products, they can also be stored in a readable storage medium. Based on this understanding, the technical solutions of the embodiments of this invention, or the parts that contribute to the prior art, can be embodied in the form of a software product. This software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as mobile storage devices, ROM, RAM, magnetic disks, or optical disks.

Claims

1. A sensor-based intelligent liquid level display device, characterized in that, include: The liquid level gauge body (1), display module (2), bottom screw (3), sensor module (4) and alarm module (5); The liquid level gauge body (1) is used to fix the display module (2), bottom screw (3), sensor module (4) and alarm module (5), and to store the transmission lines of the display module (2) and sensor module (4); The display module (2) is used to display the liquid level, temperature and abnormal information in real time; The bottom screw (3) is used to connect and fix the sensor module to the liquid level gauge body; The sensor module (4) is used to monitor the liquid level and temperature in real time; The alarm module (5) is used for alarms of abnormal liquid level or temperature.

2. The sensor-based intelligent liquid level display device according to claim 1, characterized in that, The display module (2) is used to display liquid level, temperature, and abnormal information in real time, including: First display screen (21), second display screen (22) and third display screen (23); The first, second, and third display screens are arranged horizontally and are used to display liquid level, temperature, and abnormal information in real time, respectively.

3. The sensor-based intelligent liquid level display device according to claim 2, characterized in that, The sensor module (4) is used to monitor the liquid level and temperature in real time, including: Liquid level sensor and temperature sensor; The liquid level sensor and temperature sensor are laterally distributed inside the bottom screw, and are used to monitor the liquid level and temperature in real time.

4. The sensor-based intelligent liquid level display device according to claim 3, characterized in that, The alarm module (5) is used for alarming abnormal liquid level or temperature, including: Indicator light (51), buzzer (52), and mounting base (53); The indicator light is installed directly above the mounting base, and the buzzer is installed on the front of the mounting base for audible and visual alarm.

5. A sensor-based intelligent liquid level display method, applied to the aforementioned sensor-based intelligent liquid level display device, characterized in that, The steps include: The liquid level and real-time temperature are obtained through a sensor module; Obtain preset liquid level warning thresholds and preset temperature warning thresholds; The liquid level and real-time temperature are compared with the corresponding preset liquid level warning threshold and preset temperature warning threshold, respectively, and monitoring and processing are carried out based on the threshold comparison results.

6. The sensor-based intelligent liquid level display method according to claim 5, characterized in that, The step of comparing the liquid level and real-time temperature with corresponding preset liquid level warning thresholds and preset temperature warning thresholds, and performing monitoring processing based on the threshold comparison results, includes: The liquid level height and real-time temperature are compared with the corresponding preset liquid level height warning threshold and preset temperature warning threshold, respectively. If the liquid level is less than or equal to the preset liquid level warning threshold or the real-time temperature is greater than or equal to the preset temperature warning threshold, an alarm will be output through the alarm module and displayed through the display module. Conversely, real-time monitoring is performed through the sensor module.

7. The sensor-based intelligent liquid level display method according to claim 5, characterized in that, Also includes: If it fails to obtain the preset liquid level height warning threshold, the liquid level height will be compared with the installation height of the bottom screw. If the liquid level is less than or equal to the installation height of the bottom screw, an alarm will be output through the alarm module and displayed through the display module. If the liquid level is greater than the installation height of the bottom screw, real-time monitoring is performed via the sensor module.

8. The sensor-based intelligent liquid level display method according to claim 5, characterized in that, Also includes: Obtain the rate of change of liquid level and the rate of change of temperature within a preset time period; The liquid level change rate and temperature change rate are compared with the corresponding preset liquid level change warning threshold and preset temperature change warning threshold. If the rate of change of liquid level height is greater than or equal to the preset liquid level height change warning threshold or the rate of change of temperature is greater than or equal to the preset temperature change warning threshold, an alarm will be output through the alarm module and displayed through the display module. Conversely, real-time monitoring is performed through the sensor module.

9. The sensor-based intelligent liquid level display method according to claim 8, characterized in that, Conversely, real-time monitoring is performed through the sensor module, and then includes: The weighted summation of the liquid level change rate and the temperature change rate yields the monitored change parameters. The monitored change parameters are compared with the preset monitoring change early warning threshold. If the monitored change parameter is less than or equal to the preset monitoring change early warning threshold, then real-time monitoring is performed; If the monitored change parameter is greater than the preset monitoring change early warning threshold, an alarm will be output through the alarm module and displayed through the display module.

10. The sensor-based intelligent liquid level display method according to claim 5, characterized in that, Also includes: Obtain the cumulative alarm duration output by the alarm module and compare it with the preset cumulative alarm record threshold. If the cumulative alarm duration is greater than or equal to the preset cumulative alarm recording threshold, the alarm data will be stored. If the cumulative alarm duration is less than the preset cumulative alarm record threshold, then continuous monitoring will be performed.