A concrete foundation grounding resistance measurement system

Abstract

The utility model relates to concrete foundation grounding resistance measurement technical field, especially in kind of concrete foundation grounding resistance measurement system, including foundation muscle, annular electrode and concrete conductive foundation layer, annular electrode is set in the outside of foundation muscle and annular electrode is connected with foundation muscle, concrete conductive foundation layer is wrapped in the outside of foundation muscle and annular electrode, and foundation muscle extends and passes out concrete conductive foundation layer, so need not through manual driving into grounding ground pole, fundamentally avoided the damage to concrete structure, guaranteed the structural integrity and strength of concrete foundation, while concrete conductive foundation layer is equipped with temperature sensor, humidity transducer and stress sensor, and temperature sensor, humidity transducer and stress sensor are respectively surrounded and set in the periphery of annular electrode, so accurate capture the temperature, humidity and stress change of annular electrode periphery concrete, thereby can improve the measurement precision of concrete foundation grounding resistance.

Description

Technical Field

[0001] This utility model relates to the field of concrete foundation grounding resistance measurement technology, and in particular to a concrete foundation grounding resistance measurement system. Background Technology

[0002] In fields such as power engineering and building construction, the measurement of grounding resistance of concrete foundations is crucial, as the measurement results directly affect the safe operation of equipment and the effectiveness of grounding protection. However, traditional methods for measuring the grounding resistance of concrete foundations have many defects and shortcomings.

[0003] Traditional measurement methods require manually driving in grounding electrodes, an operation that can cause irreversible damage to the concrete structure, affecting the overall strength and stability of the concrete foundation and shortening its service life. For concrete foundations of transmission lines, current measurement methods are also susceptible to electromagnetic interference from nearby high-voltage lines, and soil runoff can also interfere with the measurement process, leading to deviations in the measurement data.

[0004] In addition, grounding resistance is significantly affected by a variety of objective environmental factors: temperature changes alter the resistivity of concrete and surrounding soil, humidity fluctuations affect the current conduction path and efficiency, and uneven resistivity within concrete leads to an unbalanced current distribution. These factors work together to greatly reduce the accuracy of grounding resistance results obtained by traditional measurement methods, making it difficult to meet the strict requirements of engineering for grounding resistance measurement accuracy and posing a hidden danger to the safe operation of equipment. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a concrete foundation grounding resistance measurement system that can improve the measurement accuracy of concrete foundation grounding resistance.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A concrete foundation grounding resistance measurement system includes foundation reinforcement, a ring electrode, and a conductive concrete foundation layer; The annular electrode is sleeved on the outside of the foundation reinforcement and connected to the foundation reinforcement. The conductive concrete base layer is wrapped around the foundation reinforcement and the annular electrode. The foundation reinforcement extends and passes through the conductive concrete base layer. The conductive concrete base layer is equipped with a temperature sensor, a humidity sensor, and a stress sensor, which are respectively arranged around the annular electrode.

[0007] Furthermore, the annular electrode is wrapped with a first conductive gel layer.

[0008] Furthermore, a copper-plated alloy probe is also provided inside the conductive concrete foundation layer. The copper-plated alloy probe is located directly above the annular electrode, and a steel bar is connected to the copper-plated alloy probe as a grounding lead for measuring the grounding resistance of the concrete foundation.

[0009] Furthermore, a second conductive gel layer is provided within the conductive concrete base layer. The second conductive gel layer is located between the copper-plated alloy probe plate and the annular electrode, and the second conductive gel layer is in contact with the copper-plated alloy probe plate.

[0010] Furthermore, it also includes a first anchor bolt disposed on the outside of the concrete conductive base layer, wherein the reinforcing bar passes through the concrete conductive base layer and is connected to the first anchor bolt.

[0011] Furthermore, there are multiple annular electrodes, all of which are sleeved on the outside of the foundation reinforcement, and the multiple annular electrodes are spaced apart along the axial direction of the foundation reinforcement.

[0012] Furthermore, the plurality of annular electrodes are arranged at equal intervals along the axial direction of the foundation reinforcement, and the spacing between two adjacent annular electrodes ranges from 45mm to 55mm.

[0013] Furthermore, it also includes a foundation grounding resistance compensation and correction module, which is electrically connected to the temperature sensor, humidity sensor and stress sensor respectively.

[0014] Furthermore, the basic grounding resistance compensation and correction module includes a DDS signal generator, a phase difference detection unit, a material characteristic compensation unit, and a main control unit; The main control unit is electrically connected to the DDS signal generator and the material feature compensation unit, respectively. The phase difference detection unit is electrically connected to the DDS signal generator and the material feature compensation unit, respectively. The material feature compensation unit is electrically connected to the temperature sensor, the humidity sensor and the stress sensor, respectively.

[0015] Furthermore, it also includes a second anchor bolt disposed on the outside of the concrete conductive base layer, wherein the foundation reinforcement passes through the concrete conductive base layer and is connected to the second anchor bolt.

[0016] The beneficial effects of this utility model are as follows: This solution involves setting up foundation reinforcement, a ring electrode, and a conductive concrete base layer. The ring electrode is sleeved and connected to the outside of the foundation reinforcement, eliminating the need for manual grounding electrodes and fundamentally avoiding damage to the concrete structure, thus ensuring the structural integrity and strength of the concrete foundation. Furthermore, temperature, humidity, and stress sensors are placed around the ring electrode to accurately capture temperature, humidity, and stress changes in the concrete surrounding the ring electrode, thereby improving the measurement accuracy of the concrete foundation's grounding resistance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the concrete foundation grounding resistance measurement system of this utility model; Figure 2 This is a schematic diagram of the concrete foundation grounding resistance measurement system of this utility model; Figure 3 For the present utility model Figure 2 Enlarged view of point A in the middle; Figure 4 For the present utility model Figure 2 Enlarged view at point B in the middle; Figure 5 This is a top view of the concrete foundation grounding resistance measurement system of this utility model; Figure 6 This is a connection block diagram of the concrete foundation grounding resistance measurement system of this utility model; Label Explanation: 1. Foundation reinforcement; 101. Second main reinforcement; 102. Distribution reinforcement; 2. Ring electrode; 3. Conductive concrete foundation layer; 4. Temperature sensor; 5. Humidity sensor; 6. Stress sensor; 7. First conductive gel layer; 8. Copper-plated alloy probe plate; 9. Reinforcing bar; 10. Second conductive gel layer; 11. First anchor bolt; 12. Foundation grounding resistance compensation and correction module; 121. DDS signal generator; 122. Phase difference detection unit; 123. Material characteristic compensation unit; 124. Main control unit; 125. Power supply unit; 126. Display unit; 13. Second anchor bolt; 14. First main reinforcement; 15. Anchor bolt. Detailed Implementation

[0018] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0019] Please refer to Figure 1 A concrete foundation grounding resistance measurement system includes a foundation reinforcement 1, a ring electrode 2, and a concrete conductive foundation layer 3. The annular electrode 2 is sleeved on the outside of the foundation reinforcement 1 and connected to the foundation reinforcement 1. The concrete conductive base layer 3 is wrapped around the foundation reinforcement 1 and the annular electrode 2. The foundation reinforcement 1 extends and passes through the concrete conductive base layer 3. The conductive concrete base layer 3 is equipped with a temperature sensor 4, a humidity sensor 5, and a stress sensor 6, which are respectively arranged around the annular electrode 2.

[0020] As can be seen from the above description, the beneficial effects of this utility model are as follows: This solution involves setting up a foundation reinforcement 1, a ring electrode 2, and a conductive concrete foundation layer 3. The ring electrode 2 is fitted onto and connected to the outside of the foundation reinforcement 1, eliminating the need for manual grounding electrodes and fundamentally avoiding damage to the concrete structure, thus ensuring the structural integrity and strength of the concrete foundation. Furthermore, it incorporates a temperature sensor 4, a humidity sensor 5, and a stress sensor 6, which are positioned around the ring electrode 2. This allows for precise detection of temperature, humidity, and stress changes in the concrete surrounding the ring electrode 2, thereby improving the accuracy of the measurement of the grounding resistance of the concrete foundation.

[0021] For further details, please refer to Figure 2 and Figure 3 The annular electrode 2 is wrapped with a first conductive gel layer 7.

[0022] As can be seen from the above description, the first conductive gel layer 7 wrapped around the annular electrode 2 can effectively eliminate the contact resistance between the annular electrode 2 and the concrete conductive base layer 3. The presence of contact resistance will cause poor current conduction and interfere with the normal measurement of grounding resistance. The setting of the first conductive gel layer 7 makes the current conduction between the annular electrode 2 and the concrete conductive base layer 3 smoother, reduces the interference of contact resistance on the measurement results, and further improves the accuracy of grounding resistance measurement.

[0023] For further details, please refer to Figure 1 , Figure 2 , Figure 4 and Figure 5 The concrete conductive foundation layer 3 is also provided with a copper-plated alloy probe plate 8, which is located directly above the annular electrode 2. The copper-plated alloy probe plate 8 is connected with a steel bar 9, which serves as the grounding lead wire for measuring the grounding resistance of the concrete foundation.

[0024] As described above, the copper-plated alloy probe plate 8 provides a stable grounding lead connection point for grounding resistance measurement. Its position directly above the ring electrode 2 allows for more direct acquisition of the current signal around the ring electrode 2, ensuring the stability and reliability of signal transmission during grounding resistance measurement. Simultaneously, the connected steel bar 9 serves as the grounding lead, eliminating the need for additional complex lead structures, simplifying the overall system layout, and reducing construction difficulty.

[0025] For further details, please refer to Figure 2 and Figure 4 The concrete conductive base layer 3 is further provided with a second conductive gel layer 10, which is located on the copper-plated alloy probe plate 8 and between the annular electrode 2, and the second conductive gel layer 10 is in contact with the copper-plated alloy probe plate 8.

[0026] As can be seen from the above description, the second conductive gel layer 10 is located between the copper-plated alloy probe plate 8 and the annular electrode 2 and is in contact with the copper-plated alloy probe plate 8. It can not only eliminate the contact resistance between the copper-plated alloy probe plate 8 and the concrete conductive base layer 3, but also optimize the current conduction path between the copper-plated alloy probe plate 8 and the annular electrode 2, making the current transmission between the two more stable and uniform, avoiding measurement errors caused by contact resistance or poor conduction path, and further improving measurement accuracy.

[0027] For further details, please refer to Figure 2 and Figure 4 It also includes a first anchor bolt 11 set on the outside of the concrete conductive base layer 3, and the steel bar 9 passes through the concrete conductive base layer 3 and is connected to the first anchor bolt 11.

[0028] As described above, the reinforcing bar 9 passes through the concrete conductive foundation layer 3 and connects to the first anchor bolt 11. On the one hand, the anchor bolt provides stable fixed support for the reinforcing bar 9, ensuring that the grounding down conductor will not be displaced or loosened due to external forces during long-term use, thus ensuring the stability of the grounding system. On the other hand, this connection method makes the connection between the grounding down conductor and the external grounding system more convenient and reliable, simplifies the docking process between the system and external equipment, and improves construction efficiency.

[0029] For further details, please refer to Figure 1 and Figure 2 The number of annular electrodes 2 is multiple, and the multiple annular electrodes 2 are all sleeved on the outside of the foundation rib 1, and the multiple annular electrodes 2 are spaced apart along the axial direction of the foundation rib 1.

[0030] As described above, multiple ring electrodes 2 are spaced apart along the axis of the foundation reinforcement 1, enabling comprehensive monitoring of current dissipation at different heights and in different areas of the concrete foundation. Compared to a single ring electrode 2, which can only monitor a local area, the arrangement of multiple ring electrodes 2 can obtain more comprehensive current distribution data, providing richer evidence for the subsequent accurate calculation and correction of grounding resistance, and improving the system's accuracy in assessing the overall grounding performance of the concrete foundation.

[0031] For further details, please refer to Figure 1 and Figure 2 The multiple ring electrodes 2 are arranged at equal intervals along the axial direction of the foundation rib 1, and the spacing between two adjacent ring electrodes 2 is in the range of 45mm-55mm.

[0032] As can be seen from the above description, the multiple ring electrodes 2 are set at equal intervals and the spacing is controlled within the range of 45mm-55mm. This can ensure that the monitoring areas between adjacent ring electrodes 2 do not have obvious overlap or omission, thus achieving uniform coverage monitoring of the concrete foundation. It can also avoid cost waste and signal interference caused by too small a spacing, or monitoring blind spots caused by too large a spacing. It can ensure monitoring accuracy while taking into account economy and practicality.

[0033] For further details, please refer to Figure 6 It also includes a basic grounding resistance compensation and correction module 12, which is electrically connected to the temperature sensor 4, the humidity sensor 5 and the stress sensor 6 respectively.

[0034] As described above, the foundation grounding resistance compensation and correction module 12 is electrically connected to three types of sensors, enabling it to receive temperature, humidity, and stress data collected by the sensors in real time, and to compensate and correct the grounding resistance measurement results based on this data. This module effectively eliminates the influence of temperature, humidity, and stress changes on concrete resistivity and grounding resistance, correcting measurement results that were originally affected by environmental factors to data closer to the true values, thus significantly improving the accuracy of grounding resistance measurement.

[0035] For further details, please refer to Figure 6 The basic grounding resistance compensation and correction module 12 includes a DDS signal generator 121, a phase difference detection unit 122, a material characteristic compensation unit 123, and a main control unit 124. The main control unit 124 is electrically connected to the DDS signal generator 121 and the material feature compensation unit 123 respectively. The phase difference detection unit 122 is electrically connected to the DDS signal generator 121 and the material feature compensation unit 123 respectively. The material feature compensation unit 123 is electrically connected to the temperature sensor 4, the humidity sensor 5 and the stress sensor 6 respectively.

[0036] As described above, the DDS signal generator 121 can output a stable sweep frequency signal, providing a reliable signal source for grounding resistance measurement; the phase difference detection unit 122 can accurately measure the phase difference between current and voltage, providing key parameters for grounding resistance calculation; the material characteristic compensation unit 123 specifically processes the data collected by the sensor and performs targeted compensation calculations; the main control unit 124 coordinates the work of each component to ensure the efficient and orderly operation of the module. The collaborative work of each unit forms a complete compensation and correction process, further improving the accuracy and efficiency of compensation and correction, and ensuring the reliability of the grounding resistance measurement results.

[0037] For further details, please refer to Figure 1 and Figure 2 It also includes a second anchor bolt 13 disposed on the outside of the concrete conductive base layer 3, wherein the foundation reinforcement 1 passes through the concrete conductive base layer 3 and is connected to the second anchor bolt 13.

[0038] As can be seen from the above description, the connection between the foundation reinforcement 1 and the second anchor bolt 13 provides an additional option for fixing the foundation reinforcement 1.

[0039] Please refer to Figures 1 to 6 As shown, Embodiment 1 of this utility model is as follows: Please refer to Figure 1 A concrete foundation grounding resistance measurement system includes a foundation reinforcement 1, a ring electrode 2, and a concrete conductive foundation layer 3. The annular electrode 2 is sleeved on the outside of the base reinforcement 1 and connected to the base reinforcement 1 (the annular electrode 2 and the base reinforcement 1 are connected by welding). The concrete conductive base layer 3 is wrapped around the base reinforcement 1 and the annular electrode 2. The base reinforcement 1 extends and passes through the concrete conductive base layer 3. The conductive concrete base layer 3 is equipped with a temperature sensor 4, a humidity sensor 5, and a stress sensor 6 (the temperature sensor 4, humidity sensor 5, and stress sensor 6 are all traditional sensors, and any sensor capable of performing the corresponding function is acceptable). The temperature sensor 4, humidity sensor 5, and stress sensor 6 are respectively arranged around the annular electrode 2.

[0040] The aforementioned concrete foundation grounding resistance measurement system can be applied to the measurement of concrete foundation grounding resistance in power engineering (such as transmission line towers and substation equipment), building engineering, new energy facilities (such as photovoltaic power station supports and wind farm towers) and transportation engineering (such as railway catenary supports and highway bridge piers). It can improve measurement accuracy by combining environmental factor compensation and correction without damaging the concrete structure, and avoid the influence of electromagnetic interference and soil runoff.

[0041] The annular electrode 2 uses iron, which has good electrical conductivity, as the electrode material.

[0042] Please refer to Figure 2 and Figure 3 The annular electrode 2 is wrapped with a first conductive gel layer 7.

[0043] The conductive concrete base layer 3 is made of carbon fiber concrete.

[0044] Please refer to Figure 1 , Figure 2 , Figure 4 and Figure 5 The concrete conductive base layer 3 is also provided with a copper-plated alloy probe plate 8, which is located directly above the annular electrode 2. The copper-plated alloy probe plate 8 is connected to a steel bar 9 (5mm in diameter) that serves as a grounding lead wire for measuring the grounding resistance of the concrete base.

[0045] Please refer to Figure 2 and Figure 4 The concrete conductive base layer 3 is further provided with a second conductive gel layer 10, which is located on the copper-plated alloy probe plate 8 and between the annular electrode 2, and the second conductive gel layer 10 is in contact with the copper-plated alloy probe plate 8.

[0046] Please refer to Figure 2 and Figure 4 The axes of the concrete conductive base layer 3, the annular electrode 2, and the copper-plated alloy probe plate 8 all coincide with the axis of the base reinforcement 1.

[0047] It also includes a first anchor bolt 11 set on the outside of the concrete conductive base layer 3, and the reinforcing bar 9 passes through the concrete conductive base layer 3 and is connected to the first anchor bolt 11.

[0048] Please refer to Figure 1 and Figure 2 The number of annular electrodes 2 is multiple, and the multiple annular electrodes 2 are all sleeved on the outside of the foundation rib 1, and the multiple annular electrodes 2 are spaced apart along the axial direction of the foundation rib 1.

[0049] Please refer to Figure 1 and Figure 2 The multiple ring electrodes 2 are arranged at equal intervals along the axial direction of the base rib 1, and the spacing between two adjacent ring electrodes 2 is 45mm-55mm, preferably 50mm.

[0050] Please refer to Figure 6 It also includes a basic grounding resistance compensation and correction module 12, which is electrically connected to the temperature sensor 4, the humidity sensor 5 and the stress sensor 6 respectively.

[0051] Please refer to Figure 6The temperature sensor 4, humidity sensor 5 and stress sensor 6 are all connected to the foundation grounding resistance compensation and correction module 12 via copper-nickel alloy terminals.

[0052] The basic grounding resistance compensation and correction module 12 includes a DDS signal generator 121 (DDS stands for Direct Digital Synthesis), a phase difference detection unit 122, a material characteristic compensation unit 123, and a main control unit 124. The main control unit 124 is electrically connected to the DDS signal generator 121 and the material feature compensation unit 123 (using a chip of model ADuCM355), respectively. The phase difference detection unit 122 is electrically connected to the DDS signal generator 121 and the material feature compensation unit 123, respectively. The material feature compensation unit 123 is electrically connected to the temperature sensor 4, the humidity sensor 5 and the stress sensor 6, respectively.

[0053] Please refer to Figure 6 The basic grounding resistance compensation and correction module 12 further includes a power supply unit 125 (using an LT1963 chip for voltage regulation) and a display unit 126 (using an SSD1306 chip). The power supply unit 125 is electrically connected to the DDS signal generator 121, the phase difference detection unit 122, the material characteristic compensation unit 123, the main control unit 124, and the display unit 126, respectively. The display unit 126 is electrically connected to the main control unit 124.

[0054] Please refer to Figure 1 and Figure 2 It also includes a second anchor bolt 13 disposed on the outside of the concrete conductive base layer 3, wherein the foundation reinforcement 1 passes through the concrete conductive base layer 3 and is connected to the second anchor bolt 13.

[0055] The concrete conductive base layer 3 is also provided with a first main reinforcement 14. The first main reinforcement 14 is located outside the annular electrode 2. One end of the first main reinforcement 14 passes through the concrete conductive base layer 3, and an anchor rod 15 is sleeved on the other end of the first main reinforcement 14 that passes through the concrete conductive base layer 3.

[0056] Please refer to Figure 1 , Figure 2 and Figure 5 The foundation reinforcement 1 includes multiple interconnected second main reinforcements 101 and distribution reinforcements 102. The multiple second main reinforcements 101 and multiple distribution reinforcements 102 are all located inside the annular electrode 2. The second main reinforcements 101 pass through the concrete conductive foundation layer 3, and the multiple distribution reinforcements 102 are connected to the annular electrode 2.

[0057] The working principle of the above-mentioned concrete foundation grounding resistance measurement system is as follows: During the concrete foundation pouring stage, according to the system structure design, the annular electrode 2 is sleeved on the outside of the foundation reinforcement 1 and connected to it. A first conductive gel layer 7 is wrapped around the annular electrode 2. At the same time, the temperature sensor 4, humidity sensor 5, and stress sensor 6 are embedded in the concrete conductive base layer 3 and positioned close to the annular electrode 2. Subsequently, the copper-plated alloy probe plate 8 is placed directly above the annular electrode 2. A second conductive gel layer 10 is placed between the copper-plated alloy probe plate 8 and the annular electrode 2. The reinforcing bar 9 connected to the copper-plated alloy probe plate 8 is passed through the concrete conductive base layer 3 and connected to the first anchor bolt 11 or the second anchor bolt 13 according to actual needs. Finally, the foundation reinforcement 1, the annular electrode 2, the copper-plated alloy probe plate 8, and various sensors are wrapped with the concrete conductive base layer 3 to complete the pre-embedded installation of the system.

[0058] During system operation, the steel bar 9 connected to the copper-plated alloy probe plate 8 is used as the grounding down conductor, and the raw data of the grounding resistance of the concrete foundation is initially obtained in conjunction with external measurement methods (such as the Wenner method). During this process, the ring electrode 2 monitors the current dissipation inside the concrete foundation in real time, and the temperature sensor 4, humidity sensor 5 and stress sensor 6 collect the temperature, humidity and stress data of the concrete, respectively, and transmit these data to the foundation grounding resistance compensation and correction module 12.

[0059] In the basic grounding resistance compensation and correction module 12, the DDS signal generator 121 outputs a frequency sweep signal of 0.1Hz~10kHz. After eliminating power frequency interference through a Gaussian window weighting algorithm, the optimized signal is transmitted to the phase difference detection unit 122 (using an AD8302 chip). This unit accurately measures the current-voltage phase difference and transmits the data to the material characteristic compensation unit 123. Simultaneously, the material characteristic compensation unit 123 receives data from three types of sensors (temperature sensor 4, humidity sensor 5, and stress sensor 6), and calculates the corresponding compensation coefficients based on the temperature correction coefficient formula, humidity correction coefficient formula, and resistivity correction coefficient formula (combined with stress data to calculate the strain compensation factor). The main control unit 124 (using an STM32H743 chip) coordinates the work of each unit, combining the original grounding resistance data with each compensation coefficient, and using formulas... The corrected grounding resistance value is calculated, thus completing the accurate measurement of the grounding resistance of the concrete foundation. Specifically: The temperature correction factor is: ; in, α is the temperature coefficient of resistance of the material. For carbon fiber-based concrete, α is 0.002.

[0060] The resistivity correction factor is: ; in, Humidity sensitivity coefficient This represents the average annual humidity of the area. The humidity value is measured by humidity sensor 5.

[0061] The resistivity correction factor is: ; in and All of these are strain compensation factors.

[0062] In summary, the concrete foundation grounding resistance measurement system provided by this utility model, by setting up foundation reinforcement, a ring electrode, and a conductive concrete foundation layer, with the ring electrode sleeved and connected to the outside of the foundation reinforcement, eliminates the need for manual grounding electrodes, fundamentally avoiding damage to the concrete structure and ensuring the structural integrity and strength of the concrete foundation. Furthermore, by incorporating temperature, humidity, and stress sensors, which are respectively arranged around the ring electrode, the system can accurately capture changes in temperature, humidity, and stress in the concrete surrounding the ring electrode, thereby improving the measurement accuracy of the concrete foundation grounding resistance.

[0063] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A system for measuring the grounding resistance of a concrete foundation, characterized in that, Includes foundation reinforcement, ring electrodes, and a conductive concrete base layer; The annular electrode is sleeved on the outside of the foundation reinforcement and connected to the foundation reinforcement. The conductive concrete base layer is wrapped around the foundation reinforcement and the annular electrode. The foundation reinforcement extends and passes through the conductive concrete base layer. The conductive concrete base layer is equipped with a temperature sensor, a humidity sensor, and a stress sensor, which are respectively arranged around the annular electrode.

2. The concrete foundation grounding resistance measurement system according to claim 1, characterized in that, The annular electrode is wrapped with a first conductive gel layer.

3. The concrete foundation grounding resistance measurement system according to claim 1, characterized in that, The conductive concrete base layer is also equipped with a copper-plated alloy probe plate, which is located directly above the annular electrode. The copper-plated alloy probe plate is connected to a steel bar that serves as a grounding lead for measuring the grounding resistance of the concrete base.

4. The concrete foundation grounding resistance measurement system according to claim 3, characterized in that, The conductive concrete base layer is further provided with a second conductive gel layer, which is located between the copper-plated alloy probe plate and the annular electrode, and the second conductive gel layer is in contact with the copper-plated alloy probe plate.

5. The concrete foundation grounding resistance measurement system according to claim 3, characterized in that, It also includes a first anchor bolt set on the outside of the concrete conductive base layer, wherein the reinforcing bar passes through the concrete conductive base layer and is connected to the first anchor bolt.

6. The concrete foundation grounding resistance measurement system according to claim 1, characterized in that, The number of annular electrodes is multiple, and all annular electrodes are sleeved on the outside of the foundation reinforcement, and the multiple annular electrodes are spaced apart along the axial direction of the foundation reinforcement.

7. The concrete foundation grounding resistance measurement system according to claim 6, characterized in that, The multiple ring electrodes are arranged at equal intervals along the axial direction of the foundation reinforcement, and the spacing between two adjacent ring electrodes is 45mm-55mm.

8. The concrete foundation grounding resistance measurement system according to claim 1, characterized in that, It also includes a basic grounding resistance compensation and correction module, which is electrically connected to the temperature sensor, humidity sensor and stress sensor respectively.

9. The concrete foundation grounding resistance measurement system according to claim 8, characterized in that, The basic grounding resistance compensation and correction module includes a DDS signal generator, a phase difference detection unit, a material characteristic compensation unit, and a main control unit; The main control unit is electrically connected to the DDS signal generator and the material feature compensation unit, respectively. The phase difference detection unit is electrically connected to the DDS signal generator and the material feature compensation unit, respectively. The material feature compensation unit is electrically connected to the temperature sensor, the humidity sensor and the stress sensor, respectively.

10. The concrete foundation grounding resistance measurement system according to claim 1, characterized in that, It also includes a second anchor bolt installed on the outside of the concrete conductive base layer, wherein the foundation reinforcement passes through the concrete conductive base layer and is connected to the second anchor bolt.

Images