An automatic groundwater data monitoring device

Abstract

This utility model belongs to the field of groundwater monitoring technology, specifically disclosing an automatic groundwater data monitoring device, including: an underground water level and temperature sensor, a ground-mounted data acquisition and transmission device, a display screen, operation buttons, a communication circuit, an antenna, and a battery. The data acquisition and transmission device integrates a signal acquisition and conversion circuit, a Bluetooth circuit, a display control circuit, and a button input control circuit, all encapsulated in a waterproof and sealed housing. It has the following advantages: it has all-weather automatic acquisition, display, and wireless remote upload functions for water level and temperature data; it supports Bluetooth on-site configuration and low-power sleep / wake-up strategies; it has a compact structure, reliable sealing, and convenient deployment, making it suitable for long-term unattended application scenarios, significantly improving the intelligence level and work efficiency of groundwater monitoring.

Description

Technical Field

[0001] This utility model relates to the field of groundwater monitoring technology, and more specifically, to an automatic groundwater data monitoring device. Background Technology

[0002] Groundwater, as one of the most important water bodies on Earth, plays an irreplaceable role in maintaining the normal functioning of human society. Forming natural reservoirs within strata, groundwater possesses advantages such as stable water supply and excellent water quality, and is widely used in various fields including agricultural irrigation, industrial and mining production, and urban life, becoming a vital fundamental water resource. With increasing societal awareness of ecological environmental protection and sustainable resource utilization, the dynamic changes in groundwater have gradually attracted significant attention, especially in areas such as water resource regulation, groundwater over-extraction control, and groundwater pollution prevention and control. Real-time monitoring of groundwater data has become a crucial element in these areas.

[0003] Current groundwater monitoring methods mainly rely on manual periodic sampling and data recording, which has significant limitations. On the one hand, manual sampling is inefficient, time-consuming, and difficult to cover large or remote areas; on the other hand, manual monitoring methods cannot achieve continuous collection and remote transmission of key parameters such as groundwater level, temperature, and conductivity, resulting in insufficient real-time data and completeness, making it difficult to support rapid scientific decision-making and dynamic supervision.

[0004] To address these issues, an automatic groundwater data monitoring device is proposed. Utility Model Content

[0005] The present invention aims to provide an automatic groundwater data monitoring device to solve or improve at least one of the above-mentioned technical problems.

[0006] In view of this, the first aspect of this utility model is to provide an automatic groundwater data monitoring device.

[0007] The first aspect of this utility model provides an automatic groundwater data monitoring device, comprising: a water level and temperature sensor for installation underground to collect groundwater level and temperature data; a data acquisition and transmission device connected to the water level and temperature sensor via a data cable; the data acquisition and transmission device for receiving and processing the water level and temperature data; a display screen and operation buttons electrically connected to the data acquisition and transmission device; the display screen for displaying the water level and temperature data on-site, and the operation buttons for waking up and setting parameters of the automatic groundwater data monitoring device; a communication circuit disposed within the data acquisition and transmission device for wirelessly transmitting the processed water level and temperature data remotely; an antenna connected to the communication circuit for wireless data communication; a battery for powering the water level and temperature sensor, the data acquisition and transmission device, the communication circuit, the display screen, and the operation buttons; and a waterproof sealed housing, in which the data acquisition and transmission device, the communication circuit, the display screen, the operation buttons, and the battery are all installed.

[0008] The beneficial effects of this utility model compared with the prior art are as follows:

[0009] The data acquisition and transmission device, communication circuit, display and button components, and battery are encapsulated in a waterproof and sealed housing. With double sealing rings and a waterproof and breathable valve, the whole machine achieves an IP67 protection rating, enabling it to operate stably for a long time in high humidity, waterlogged, or sandy environments, significantly improving the reliability and lifespan of the equipment under harsh outdoor conditions.

[0010] The signal acquisition and conversion circuit integrates an MCU, FLASH storage, and a 485 level conversion chip. Combined with an ultra-low power sleep-wake strategy and a disposable lithium battery power supply solution, it realizes the periodic automatic acquisition, storage, and local preprocessing of groundwater level and temperature data. The average power consumption of the whole machine is significantly lower than that of traditional split-type monitoring systems, and the maintenance-free continuous working time can be measured in years.

[0011] The communication circuit can upload monitoring data in real time through cellular networks such as NB-IoT / 4G / GPRS via an antenna, and supports Bluetooth circuit interconnection with mobile devices. On-site parameter configuration, data reading and system upgrades can be completed quickly, ensuring both real-time data reception from the remote central platform and convenient local debugging, thus improving operation and maintenance efficiency.

[0012] The water level and temperature sensor and the dedicated RS485 data cable adopt a separate layout. The underground sensor is sealed and immersed in the water, while the above-ground acquisition device can be flexibly installed or replaced. Compared with the solution of placing the electronic module directly in the well, it effectively avoids the risk of electronic component failure caused by long-term immersion in water, while maintaining measurement accuracy.

[0013] By filtering and buffering outliers in the collected data locally, the system can continue to record data even when the communication network is briefly interrupted and automatically retransmit it after the network is restored. This ensures the integrity and timeliness of the monitoring data and provides continuous and reliable data support for groundwater resource allocation, over-extraction early warning, and environmental assessment.

[0014] The integrated design of structural components and functional modules reduces assembly steps, resulting in a compact size and light weight. It can be quickly deployed by a single person to existing observation wells or temporary boreholes, significantly reducing construction costs and on-site manpower input, and facilitating mass production.

[0015] Additional aspects and advantages of embodiments of the present invention will become apparent in the following description or may be learned by practice of embodiments of the present invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a schematic diagram of the structure of the waterproof sealing shell of this utility model after the shell and cover are opened;

[0018] Figure 2 This is a schematic diagram of the circuit connection of this utility model.

[0019] in, Figure 1-2 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0020] 1. Water level and temperature sensor; 2. Data acquisition and transmission device; 3. Antenna; 4. Waterproof sealing housing; 5. Data cable; 6. First sealing ring; 7. Second sealing ring; 8. Bluetooth antenna; 9. Operation buttons; 10. Display screen; 11. Waterproof connector; 12. Waterproof vent valve; 13. Battery compartment; 14. Bluetooth circuit; 15. Display control circuit; 16. Button input control circuit; 17. Communication circuit; 18. Battery; 19. Signal acquisition and conversion circuit; 20. MCU processor; 21. FLASH memory chip; 22. 485 level conversion chip; 23. Mobile device. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0023] Please see Figure 1-2 The following describes an automatic groundwater data monitoring device according to some embodiments of the present invention.

[0024] An embodiment of the first aspect of this utility model provides an automatic groundwater data monitoring device. In some embodiments of this utility model, such as... Figure 1-2 As shown, the automatic groundwater data monitoring device includes:

[0025] Water level and temperature sensor 1 is used to be installed underground to collect groundwater level and temperature data.

[0026] The data acquisition and transmission device 2 is connected to the water level and temperature sensor 1 via a data cable 5; the data acquisition and transmission device 2 is used to receive and process water level data and temperature data.

[0027] The display screen 10 and operation buttons 9 are electrically connected to the data acquisition and transmission device 2; the display screen 10 is used to display water level data and temperature data on site, and the operation buttons 9 are used to wake up the automatic groundwater data monitoring device and set parameters.

[0028] The communication circuit 17 is installed inside the data acquisition and transmission device 2. The communication circuit 17 is used to wirelessly transmit the water level data and temperature data processed by the data acquisition and transmission device 2.

[0029] Antenna 3 is connected to communication circuit 17 and is used to realize wireless data communication.

[0030] Battery 18 is used to power the water level and temperature sensor 1, the data acquisition and transmission device 2, the communication circuit 17, the display screen 10, and the operation buttons 9.

[0031] The waterproof sealed housing 4, the data acquisition and transmission device 2, the communication circuit 17, the display screen 10, the operation buttons 9 and the battery 18 are all installed inside the waterproof sealed housing 4.

[0032] This utility model provides an automatic groundwater data monitoring device. The automatic groundwater data monitoring device achieves long-term, automatic, and low-power monitoring of groundwater level and temperature information through a split structure design of above-ground and underground components. Specifically, it includes a water level and temperature sensor 1, a data acquisition and transmission device 2, a display screen 10, operation buttons 9, a communication circuit 17, an antenna 3, a battery 18, and a waterproof and sealed housing 4. The components work together to complete the entire process from hydrological data acquisition, processing, display, transmission to power supply guarantee.

[0033] The water level and temperature sensor 1, serving as the underground sensing unit of the device, is deployed in monitoring wells, boreholes, or groundwater observation points. Through its built-in high-precision pressure-temperature composite sensing element, it senses real-time changes in hydrostatic pressure and water temperature in the groundwater body and transmits the collected raw analog or digital signals to the surface via data cable 5. This data cable 5 is preferably an industrial-grade RS485 data cable, characterized by strong anti-interference capabilities and high stability over long distances. It physically connects to the data acquisition interface of the above-ground device for signal transmission, and a waterproof connector ensures long-term reliable sealing at the connection points, adapting to complex outdoor environments.

[0034] The data acquisition and transmission device 2, serving as the core ground processing unit, integrates signal acquisition and conversion circuits, a storage chip, a control unit, and auxiliary circuit modules. It is responsible for real-time reception, analog-to-digital conversion, filtering, data structuring, and local caching of signals from the water level and temperature sensor 1. This device possesses intelligent processing capabilities, including processing multi-source data, automatically identifying anomalies, and scheduling upload tasks, ensuring that the acquired groundwater monitoring information is accurate and can be transmitted, stored, and retrieved in a standardized manner.

[0035] To facilitate on-site monitoring of equipment status and test data, the display screen 10 is connected to the data acquisition and transmission device 2. It visually displays the currently acquired groundwater level, temperature readings, current communication status, battery level, Bluetooth connection status, and other information. The display provides rich content and fast page switching response, allowing field personnel to perform equipment debugging and operational checks without external equipment assistance. The operation buttons 9, connected to the main control MCU in conjunction with the button input circuit, are used to wake up the device in low-power sleep mode, force a real-time acquisition operation outside the acquisition cycle, switch display content, or initialize parameter settings, providing multi-functional control capabilities.

[0036] To enable remote data upload and real-time synchronization with the backend, communication circuit 17 is integrated into data acquisition and transmission device 2. This communication circuit supports multiple wireless network protocols, including NB-IoT, 4G, and GPRS, and features adaptive network switching and reconnection upon interruption. Antenna 3 is connected to communication circuit 17 via an RF interface to enhance wireless signal transmission and reception capabilities, ensuring data upload can still be completed in areas with severe signal obstruction or remote locations. Before data upload, the MCU centrally schedules and processes the data, supporting various communication strategies such as timed upload, event-driven upload, or remote request-response upload.

[0037] The entire system is powered independently by battery 18, a high-capacity, disposable lithium battery housed in the battery compartment. This battery features stable voltage output, low-temperature discharge resistance, and long-lasting operation, enabling continuous operation for over a year in a fully enclosed environment. Battery 18 supplies power to all functional modules, including the water level and temperature sensor 1, data acquisition and transmission device 2, communication circuit 17, display screen 10, and operation buttons 9. A hardware power management unit centrally manages the operation of each module, and a software-based automatic sleep strategy enables on-demand wake-up and operation—a power-saving mechanism.

[0038] To ensure the equipment's environmental adaptability and long-term deployment capability, the data acquisition and transmission device 2, communication circuit 17, display screen 10, operation buttons 9, and battery 18 are all encapsulated within a waterproof and sealed housing 4. The housing 4 features a first and a second sealing ring at the joints between the cover and the housing, forming a double physical seal. Additionally, a waterproof vent valve is installed on the housing to ensure pressure balance for the internal electronic components during drastic temperature changes, preventing condensation and moisture intrusion. This sealing structure enables the entire device to achieve an IP67 protection rating, ensuring stable operation under extreme outdoor conditions such as rain, humidity, dust, high temperatures, or freezing.

[0039] In any of the above embodiments, the data acquisition and transmission device 2 includes a signal acquisition and conversion circuit 19 electrically connected to the water level and temperature sensor 1. The signal acquisition and conversion circuit 19 includes an MCU processor 20, a 485 level conversion chip 22, and a FLASH storage chip 21. The MCU processor 20 is connected to the 485 level conversion chip 22 and the FLASH storage chip 21.

[0040] In this embodiment, the raw signal collected by the water level and temperature sensor 1 is transmitted via data line 5 and first input to the RS485 level conversion chip 22. Since the water level and temperature sensor 1 uses the industrial standard RS485 signal interface for output, its signal level is not directly compatible with the input logic of the MCU. Therefore, the RS485 level conversion chip 22 is set to convert the RS485 bus level into a TTL level signal that can be recognized by the MCU processor 20, so as to realize the conversion and compatibility between the communication protocol and the level standard.

[0041] After the signal is received via the 485 level conversion chip 22, the MCU processor 20 immediately parses the received data frame, including logical processing operations such as extracting water level and temperature values, standardizing data format, and adding timestamps. The parsed valid data is then judged and filtered according to internal preset rules and transferred to the FLASH storage chip 21 for temporary storage. This FLASH storage chip 21 is non-volatile, enabling it to continuously save historical monitoring data in the event of power failure or communication interruption, ensuring data integrity and providing a reliable basis for subsequent data uploads, local retrieval, or anomaly tracing.

[0042] Furthermore, the MCU processor 20 enters a low-power sleep state via an internal timer or RTC module. All peripheral modules, such as sensors, displays, and communication circuits, are powered off or enter standby mode in this state, retaining only the timing function. Power consumption is typically below a few microamps. The internal timing unit of the MCU processor 20 automatically triggers a wake-up signal at set intervals, such as every 30 minutes or every 2 hours. The MCU resumes operation, controls the water level and temperature sensor 1 to complete one data acquisition cycle, processes the data, and then re-enters sleep mode. In addition to timed wake-up, if on-site personnel initiate a connection via Bluetooth using operation button 9 or mobile device 23, the MCU can also be woken up by an external interrupt signal, entering an instant interaction or configuration state, and automatically returning to sleep mode after the operation is completed.

[0043] In any of the above embodiments, the data acquisition and transmission device 2 further includes a Bluetooth circuit 14, which is connected to the signal acquisition and conversion circuit 19 to achieve wireless connection with the external mobile device 23, and to read water level data and temperature data and configure parameters through the mobile device 23.

[0044] In this embodiment, when on-site personnel bring their mobile device 23 close to the monitoring device and launch the accompanying APP, the Bluetooth circuit 14 actively broadcasts its own identification information through the Bluetooth antenna 8. After the mobile device 23 detects the device signal, it establishes a pairing connection. Once the connection is successful, the signal acquisition and conversion circuit 19 sends the latest water level data, temperature data, and equipment operating status cached in the MCU processor 20 to the mobile device 23 in real time, enabling operators to view the current acquisition status, historical trend data, or recorded abnormal information through the interface.

[0045] Meanwhile, users can also issue parameter configuration commands via mobile device 23, such as modifying the acquisition interval, setting the communication frequency, and enabling / disabling certain functional modules. These configuration commands are transmitted via Bluetooth circuit 14, parsed and stored by MCU processor 20, and ultimately updated in the signal acquisition control logic and data upload strategy, allowing the device operation strategy to be flexibly adjusted according to on-site requirements. Furthermore, during device debugging or initial deployment, Bluetooth circuit 14 can also serve as a quick configuration channel, replacing the traditional physical interface configuration method, lowering the debugging threshold and shortening the deployment cycle.

[0046] In any of the above embodiments, the data acquisition and transmission device 2 further includes a display control circuit 15 and a key input control circuit 16.

[0047] The display control circuit 15 connects the display screen 10 and the signal acquisition and conversion circuit 19.

[0048] The key input control circuit 16 connects the operation key 9 and the signal acquisition and conversion circuit 19.

[0049] In this embodiment, the display control circuit 15 converts the data structure processed in the signal acquisition and conversion circuit 19 into visual output instructions, and drives the display screen 10 to display the acquisition results and device operating status in graphical or digital form. The key input control circuit 16 is connected to the operation key 9, and is used to acquire the user's physical pressing operation signal, convert it into a standardized digital signal and transmit it to the MCU processor 20 in the signal acquisition and conversion circuit 19 for recognition and response.

[0050] Furthermore, data cable 5 is a dedicated RS485 data cable, which connects the data acquisition and transmission device 2 and the water level and temperature sensor 1 through a waterproof connector 11.

[0051] Furthermore, a battery compartment 13 is provided inside the waterproof sealed housing 4, and the battery 18 is a disposable lithium battery installed in the battery compartment 13.

[0052] Furthermore, a waterproof and breathable valve 12 is provided on the waterproof and sealed housing 4. The waterproof and breathable valve 12 is used to achieve air pressure balance between the inside and outside of the waterproof and sealed housing 4.

[0053] Furthermore, the waterproof sealing housing 4 is provided with a double sealing structure, which includes a first sealing ring 6 and a second sealing ring 7; the first sealing ring 6 is provided on the edge of the housing of the waterproof sealing housing 4, and the second sealing ring 7 is provided on the edge of the cover of the waterproof sealing housing 4.

[0054] Working principle: After the device is put into use, battery 18 (disposable lithium battery) is installed in battery compartment 13 to provide independent, long-cycle power supply for the entire device. All functional modules are encapsulated inside a waterproof sealed housing 4. The waterproof sealed housing 4 forms a double sealing structure through a first sealing ring 6 set on the edge of the housing and a second sealing ring 7 set on the edge of the cover. At the same time, its outer shell is also equipped with a waterproof vent valve 12 to balance the internal and external pressure difference, ensuring the sealing and stability of the equipment during long-term operation in the field environment.

[0055] The MCU processor 20 is located in the signal acquisition and conversion circuit 19, possessing ultra-low power consumption control capabilities and supporting automatic sleep and timed wake-up functions. At the set wake-up time, the MCU processor 20 controls the water level and temperature sensor 1 to begin collecting groundwater level and temperature data. The water level and temperature sensor 1 is encapsulated in an underground protective housing, and transmits analog or digital signals to the ground-based data acquisition and transmission device 2 via a buried data cable 5. The data cable 5 achieves reliable connection with the data acquisition and transmission device 2 through a waterproof connector 11 to prevent moisture intrusion.

[0056] The 485 level conversion chip 22 in the signal acquisition and conversion circuit 19 processes the sensor signal at a standard interface level. The FLASH storage chip 21 temporarily buffers and stores the acquired data locally. The MCU processor 20 parses, classifies, and organizes the transmitted data, and sends the water level and temperature information to the display screen 10 for on-site display via the display control circuit 15. Simultaneously, the MCU processor 20 listens for input signals from the operation button 9 via the button input control circuit 16, supporting manual wake-up, start-up of acquisition, or function switching on-site.

[0057] Bluetooth circuit 14 is connected to signal acquisition and conversion circuit 19, and at the same time establishes a wireless communication connection with external mobile device 23 through Bluetooth antenna 8. Users can perform operations such as setting device parameters, reading historical data, and upgrading the system through the APP on mobile device 23, which enhances the convenience of local debugging and configuration.

[0058] The processed data is output from the signal acquisition and conversion circuit 19 to the communication circuit 17, which then wirelessly uploads the data to a remote platform via the connected antenna 3. The communication circuit 17 supports multiple IoT network standards such as NB-IoT, 4G, or GPRS, and can report water level and temperature monitoring data and equipment operating status to the water resource supervision platform or environmental monitoring center in real time. All the above units are powered by the battery 18.

[0059] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An automatic groundwater data monitoring device, characterized in that, include: A water level and temperature sensor (1) is used to be installed underground to collect groundwater level and temperature data; The data acquisition and transmission device (2) is connected to the water level and temperature sensor (1) via a data cable (5); the data acquisition and transmission device (2) is used to receive and process the water level data and the temperature data; The display screen (10) and operation buttons (9) are electrically connected to the data acquisition and transmission device (2); the display screen (10) is used to display the water level data and the temperature data on site, and the operation buttons (9) are used to wake up and set parameters of the automatic groundwater data monitoring device. A communication circuit (17) is installed in the data acquisition and transmission device (2). The communication circuit (17) is used to wirelessly transmit the water level data and temperature data processed by the data acquisition and transmission device (2). Antenna (3) is connected to the communication circuit (17) and is used to realize wireless data communication; A battery (18) is used to power the water level and temperature sensor (1), the data acquisition and transmission device (2), the communication circuit (17), the display screen (10) and the operation buttons (9); The waterproof sealed housing (4) houses the data acquisition and transmission device (2), the communication circuit (17), the display screen (10), the operation buttons (9), and the battery (18).

2. The automatic groundwater data monitoring device according to claim 1, characterized in that, The data acquisition and transmission device (2) includes a signal acquisition and conversion circuit (19) electrically connected to the water level and temperature sensor (1). The signal acquisition and conversion circuit (19) includes an MCU processor (20), a 485 level conversion chip (22), and a FLASH storage chip (21). The MCU processor (20) is connected to the 485 level conversion chip (22) and the FLASH storage chip (21).

3. The automatic groundwater data monitoring device according to claim 2, characterized in that, The data acquisition and transmission device (2) also includes a Bluetooth circuit (14), which is connected to the signal acquisition and conversion circuit (19) to achieve wireless connection with an external mobile device (23) and to read the water level data and temperature data and configure parameters through the mobile device (23).

4. The automatic groundwater data monitoring device according to claim 2 or 3, characterized in that, The data acquisition and transmission device (2) also includes a display control circuit (15) and a key input control circuit (16); The display control circuit (15) is connected to the display screen (10) and the signal acquisition and conversion circuit (19); The key input control circuit (16) is connected to the operation key (9) and the signal acquisition and conversion circuit (19).

5. The automatic groundwater data monitoring device according to claim 1, characterized in that, The data cable (5) is a dedicated RS485 data cable, which is connected to the data acquisition and transmission device (2) and the water level and temperature sensor (1) through a waterproof connector (11).

6. The automatic groundwater data monitoring device according to claim 1, characterized in that, The waterproof sealed housing (4) is provided with a battery compartment (13), and the battery (18) is a disposable lithium battery installed in the battery compartment (13).

7. The automatic groundwater data monitoring device according to claim 1, characterized in that, The waterproof sealing housing (4) is provided with a waterproof vent valve (12), which is used to achieve air pressure balance between the inside and outside of the waterproof sealing housing (4).

8. The automatic groundwater data monitoring device according to claim 1, characterized in that, The waterproof sealing housing (4) is provided with a double sealing structure, which includes a first sealing ring (6) and a second sealing ring (7); the first sealing ring (6) is disposed on the edge of the housing of the waterproof sealing housing (4), and the second sealing ring (7) is disposed on the edge of the cover of the waterproof sealing housing (4).

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