Beidou-based coal mining subsidence area photovoltaic support monitoring device

Abstract

The utility model discloses a coal mining subsidence area photovoltaic support monitoring device based on Beidou, comprising a photovoltaic support erected on the ground, the high end of the photovoltaic support supports a photovoltaic panel, and the bottom end of the photovoltaic support is provided with a GNSS acquisition instrument; a static force level gauge is arranged at the high end of the photovoltaic support, and pile foundation differential settlement information caused by ground settlement of the photovoltaic support is collected; the Beidou short message communication module is used for assisting data transmission acquired by the static leveling instrument; and the system further comprises a user terminal control module. The beneficial effects are that operation and maintenance personnel can conveniently monitor the deformation condition of the photovoltaic support in a coal mining subsidence area and the surface collapse condition, complete period monitoring is carried out on the surface collapse, a fixed support can be repaired in time, and damage to the support and a photovoltaic assembly caused by excessive deformation of the photovoltaic support due to excessive surface subsidence is avoided.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic support monitoring, specifically to a photovoltaic support monitoring device based on BeiDou in coal mining subsidence areas. Background Technology

[0002] During coal mining, underground ore extraction causes ground subsidence, resulting in land damage and ecological degradation. Constructing photovoltaic (PV) power stations in these subsidence areas not only utilizes land resources for green energy generation but also promotes ecological restoration through vegetation recovery and soil improvement, achieving a win-win situation for environmental protection and energy production. The integrated utilization model of PV + coal mining subsidence area management is an innovative approach that combines PV power generation technology with ecological restoration of coal mining subsidence areas. This model not only provides sustainable economic income for the subsidence areas but also improves the local ecological environment, achieving comprehensive resource utilization and sustainable development. It has broad application prospects and promotional value in the future.

[0003] Photovoltaic supports built in coal mining subsidence areas are subjected to secondary stresses caused by uneven settlement of the foundation, resulting in complex stress conditions. In areas with large foundation settlement, timely repairs are often necessary. However, due to the large size of the photovoltaic field, it is difficult to monitor the deformation of the photovoltaic supports in real time, which causes trouble for the operation, maintenance and repair of the photovoltaic power station. Utility Model Content

[0004] The purpose of this invention is to provide a BeiDou-based photovoltaic support monitoring device for coal mining subsidence areas in order to solve the above problems, as detailed below.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This utility model provides a photovoltaic support monitoring device for coal mining subsidence areas based on Beidou, including a photovoltaic support erected on the ground, with the high end of the photovoltaic support supporting the photovoltaic panels, and a GNSS data acquisition instrument arranged at the bottom end of the photovoltaic support to collect ground subsidence information in the subsidence area;

[0007] A static level is installed at the high end of the photovoltaic support to collect information on uneven settlement of the pile foundation caused by ground settlement.

[0008] It also includes the BeiDou short message communication module that assists in the data transmission of the data collected by the hydrostatic level, and a user terminal control module that receives data collected by the GNSS data acquisition instrument and the hydrostatic level.

[0009] The user terminal control module is powered on and connected to a display module and an early warning module.

[0010] To further explain, the bottom of the photovoltaic support includes multiple legs, and the legs are distributed in a rectangular array.

[0011] To further explain, the GNSS data acquisition device is arranged at the bottom of each of the legs, at the junction of the legs, and in the middle of the array. The GNSS data acquisition device is fixed to the legs by bolts through a "gate"-shaped or frame-shaped frame.

[0012] To further explain, the hydrostatic level is located on the outer side of the legs on both sides of the width.

[0013] To further explain, each of the photovoltaic supports is equipped with an even number of the hydrostatic level instruments.

[0014] To further explain, the data transmission of the hydrostatic level is transmitted to the user terminal control module via wireless Bluetooth.

[0015] To further explain, the output end of the photovoltaic panel is connected to a battery via an inverter, and both the hydrostatic level and the GNSS data acquisition instrument are electrically connected to the battery.

[0016] To further clarify, the user terminal control module can be a computer terminal or a mobile phone terminal.

[0017] The beneficial effects are:

[0018] It can facilitate operation and maintenance personnel to monitor the deformation of photovoltaic supports and ground subsidence in coal mining subsidence areas, and conduct full-cycle monitoring of ground subsidence so as to repair the fixed supports in a timely manner and avoid damage to the supports and photovoltaic modules caused by excessive deformation of photovoltaic supports due to excessive ground subsidence. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a flowchart illustrating the structure of this utility model;

[0021] Figure 2 This is a power supply structure diagram of the GNSS data acquisition instrument and the hydrostatic level in this utility model;

[0022] Figure 3 This is a schematic diagram of the installation structure of the static level instrument on the photovoltaic support in this utility model.

[0023] The annotations in the attached figures are explained as follows:

[0024] 1. GNSS data acquisition instrument; 2. Hydrostatic level; 3. User terminal control module. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] First embodiment:

[0027] See Figures 1-3 As shown, this utility model provides a photovoltaic support monitoring device for coal mining subsidence areas based on Beidou, including a photovoltaic support erected on the ground, a photovoltaic panel supported at the high end of the photovoltaic support, and a GNSS data acquisition instrument 1 arranged at the bottom of the photovoltaic support to collect ground subsidence information in the subsidence area.

[0028] A static level 2 is installed at the high end of the photovoltaic support to collect information on uneven settlement of the pile foundation caused by ground settlement.

[0029] It also includes a Beidou short message communication module for data transmission from the auxiliary hydrostatic level 2, and a user terminal control module 3. The user terminal control module 3 receives data from the GNSS data acquisition instrument 1 and the hydrostatic level 2, and calculates the settlement result of the photovoltaic support. The user terminal control module 3 is electrically connected to a display module and an early warning module. The result is displayed on the display module of the user terminal control module 3. When the calculated settlement result exceeds the set threshold, the early warning module will issue an alarm. Manual detection can be used to detect the settlement of the photovoltaic support and assist in the calculation and correction of the settlement result. This device can achieve "ground" monitoring at the "mm" level through dual detection, monitor the surface settlement of the subsidence area throughout the entire cycle, and issue timely warnings when the settlement exceeds the limit. This allows maintenance personnel to loosen the support bolts before the ground settlement deformation becomes too large, increasing the deformation capacity of the photovoltaic support and reducing damage to the photovoltaic modules.

[0030] Throughout the device, the inclination angle of the support can be determined by monitoring the pile settlement data using hydrostatic level 2.

[0031]

[0032] In the formula, Δ1 is the uneven settlement difference of the photovoltaic support pile foundation monitored and collected by the hydrostatic level instrument 2;

[0033] D is the center distance between two adjacent pile foundations of the photovoltaic support;

[0034] α1 is the tilt angle of the photovoltaic support obtained by monitoring with hydrostatic level 2.

[0035] By comparing and analyzing the ground settlement information monitored by GNSS with the settlement difference of the photovoltaic support pile foundation monitored by the hydrostatic level 2, the tilt angle of the photovoltaic support can be directly obtained from the ground settlement information.

[0036] In principle, the monitoring data from the hydrostatic level 2 instrument is used to verify the GNSS monitoring data, and the ground settlement information monitored by the GNSS is corrected during the data analysis phase. This allows the tilt angle of the photovoltaic support after ground settlement to be inferred solely from the ground settlement monitored by the GNSS instrument.

[0037] [k][Δ2]=[Δ1]

[0038] k is the correction coefficient obtained through data regression analysis;

[0039] Δ2 represents ground subsidence information collected by GNSS monitoring.

[0040] In summary, the relationship between the support tilt angle and ground settlement can be obtained:

[0041]

[0042] By monitoring the microcracks in the components after settlement using an EL detector, the relationship between ground settlement information and component microcracks can be determined, thereby establishing an early warning mechanism and issuing alarms.

[0043] The second embodiment differs from the first embodiment in that:

[0044] The photovoltaic (PV) support structure comprises multiple legs arranged in a rectangular array at its base. A GNSS data acquisition unit (GNSS 1) is positioned at the bottom of each leg, at the leg junctions, and in the center of the array. The GNSS 1 is fixed to the legs via bolts using a "gate"-shaped or frame-shaped bracket. Assuming the PV support legs are arranged in a rectangular array, such as 2×2, 2×3, or 3×3, this arrangement ensures comprehensive monitoring of the base's settlement. As the monitoring data accumulates, different... Monitoring the settlement of the support frame and outriggers allows for more accurate results. Each outrigger requires at least one monitoring point to ensure comprehensive monitoring of settlement changes. GNSS data acquisition unit 1 primarily utilizes the BeiDou short message communication module for data transmission. It uses the BeiDou satellite system or ground base stations for data transmission, making it suitable for long-distance communication. Furthermore, BeiDou short message communication mainly transmits information via satellite, enabling data transmission in areas without terrestrial networks. Due to the larger number of GNSS data acquisition units 1 installed, using BeiDou short message communication is suitable for transmitting large amounts of data, resulting in better transmission performance.

[0045] In addition, the static level 2 is installed on the outer side of the legs on both sides of the width, and an even number of static level 2 are installed on each photovoltaic support. The data transmission of the static level 2 is transmitted to the user terminal control module 3 via wireless Bluetooth. Although the cooperation of the Beidou system and GNSS data acquisition instrument 1 can provide position data, if more precise positioning accuracy, such as millimeter-level accuracy, is required, NTP (Network Time Protocol) or GPS synchronization technology can be used to ensure time synchronization of multiple static level 2 instruments.

[0046] The third embodiment differs from the first embodiment in that:

[0047] The output of the photovoltaic panel is connected to a battery via an inverter. The hydrostatic level 2 and GNSS data acquisition instrument 1 are both electrically connected to the battery. The photovoltaic panel converts solar energy into electricity, while the inverter converts the direct current generated by the solar energy into electricity suitable for battery storage. This fully utilizes solar energy resources, storing the electricity generated during the day to ensure continued use at night or on cloudy days. In this structure, the hydrostatic level 2 and GNSS data acquisition instrument 1 obtain power from the battery, eliminating the need for an external power source. This not only reduces dependence on the external power grid but also allows for independent operation in locations far from power facilities, increasing the system's flexibility and adaptability.

[0048] The fourth embodiment differs from the first embodiment in that:

[0049] Using BeiDou high-precision positioning service technology, we can monitor and provide real-time early warning of surface subsidence and deformation of key points of flexible supports in coal mining subsidence areas.

[0050] The specific operating steps are as follows:

[0051] 1. Install monitoring and sensing equipment in the subsidence area, including a hydrostatic level and GNSS equipment. The specific construction plan for the GNSS equipment is as follows: First, establish a geologically stable zone reference station on the support structure near the coal mining subsidence area, and then arrange the stations in a grid pattern within the subsidence area. The hydrostatic level will be positioned on top of the photovoltaic support pile foundation, with two levels deployed for each support group.

[0052] 2. After ground subsidence, information is collected using the above-mentioned sensing devices;

[0053] 3. Transmit the collected information to the user terminal;

[0054] 4. Based on the on-site monitoring data of component microcracks, the maximum allowable tilt angle for uneven settlement of the support was determined;

[0055] 5. Establish an early warning mechanism based on data analysis conclusions, and issue alarms to user terminals according to the mechanism.

[0056] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A Beidou-based coal mining subsidence area photovoltaic support monitoring device, comprising a photovoltaic support erected on the ground, the high end of the photovoltaic support being provided with photovoltaic panel support, characterized in that: a GNSS collector (1) is arranged at the bottom end of the photovoltaic support to collect subsidence area ground subsidence information; a static level gauge (2) is arranged at the high end of the photovoltaic support to collect pile foundation uneven settlement information caused by ground subsidence of the photovoltaic support; the Beidou short message communication module for assisting the static level gauge (2) in collecting data transmission is further included, and a user terminal control module (3) is further included to receive data collected by the GNSS collector (1) and the static level gauge (2); a display module and a warning module are electrically connected to the user terminal control module (3).

2. The monitoring device for photovoltaic support in coal mining subsidence area based on Beidou according to claim 1, characterized in that: The photovoltaic support bottom comprises a plurality of legs, and the legs are arranged in a rectangular array.

3. The monitoring device for photovoltaic support in coal mining subsidence area based on Beidou according to claim 2, characterized in that: The GNSS collector (1) is arranged at the bottom end of each leg, the intersection of the legs, and the position in the middle of the array, and the GNSS collector (1) is bolted with the legs through a "door" shaped or frame shaped frame.

4. The monitoring device for photovoltaic support in coal mining subsidence area based on Beidou according to claim 2, characterized in that: The static level gauge (2) is arranged outside the legs on both sides of the width.

5. The monitoring device for photovoltaic support in coal mining subsidence area based on Beidou according to claim 4, characterized in that: An even number of static level gauges (2) are arranged on each photovoltaic support.

6. The Beidou-based coal mining subsidence area photovoltaic support monitoring device according to claim 5, characterized in that: The data transmission of the static level gauge (2) is transmitted to the user terminal control module (3) through wireless Bluetooth.

7. The monitoring device for photovoltaic support in coal mining subsidence area based on Beidou according to claim 1, characterized in that: The output end of the photovoltaic panel is connected with a storage battery through an inverter, and the static level gauge (2) and the GNSS collector (1) are electrically connected with the storage battery.

8. The monitoring device for photovoltaic support in coal mining subsidence area based on Beidou according to claim 1, characterized in that: The user terminal control module (3) is a computer terminal and a mobile phone terminal.

Images