An overhead line ground-air current monitoring interactive device

Abstract

This invention relates to an overhead line ground-to-air current monitoring interactive device, characterized in that it includes a monitoring end and a terminal; the monitoring end includes a current sensor (1), a current sensor housing A (2), a current sensor housing B (3), a current display screen (4), a monitoring device housing A (5), a PCB control board (6), a monitoring interaction board (7), and a monitoring device housing B (8); the current sensor (1) is installed in the opening groove of the current sensor housing A (2) and the current sensor housing B (3), and opens and closes through the shaft hole at the bottom of the housing as a rotating shaft; the current sensor housing is fixed to the monitoring device housing B (8) by a pin, and a torsion spring is installed at the rotating shaft of the monitoring device housing to provide closing torque to make the current sensor close tightly; this invention solves the problems of insufficient safety, limited applicability, single monitoring method, and delayed information interaction in the prior art.

Description

Technical Field

[0001] This invention relates to a monitoring device, and more particularly to an interactive device for monitoring the ground-to-air current of overhead lines. Background Technology

[0002] In the field of 10kV distribution network live-line working current monitoring and operation protection, existing technical solutions mainly revolve around single-mode current acquisition, one-way early warning prompts, and decentralized installation and deployment.

[0003] Currently, ground-to-air current monitoring mainly includes clamp-on ammeters and high-voltage AC submarine cable grounding current monitoring systems.

[0004] Clamp meters are a core measuring tool commonly used by electrical engineers, electronics engineers, and related technicians. Their key feature is the ability to measure current without disconnecting the circuit, making them crucial in electrical maintenance and equipment debugging. Compared to traditional ammeters that require circuit disconnection, clamp meters achieve non-invasive measurement through clamping, and are widely used in industrial electrical maintenance to determine overload conditions and in building electrical debugging to ensure three-phase load balance. However, existing clamp meters are primarily suitable for low-voltage routine electrical maintenance and offer little practical help for 10kV distribution network live-line work. Furthermore, the significant differences between low-voltage and high-voltage working conditions prevent their application in 10kV operation and maintenance.

[0005] The high-voltage AC submarine cable grounding current monitoring system is designed for the power transmission mode that is gradually forming in urban centers, which is mainly based on high-voltage cables and supplemented by overhead lines. It is mainly used to monitor the grounding current of buried cables to prevent lightning current from entering the cable lines. This type of system is a fixed device for long-term monitoring and is used in conjunction with buried cables and other equipment. It cannot be adapted for actual operation on 10kV overhead lines.

[0006] The existing technology has the following main drawbacks:

[0007] First, there is a lack of safety. Existing clamp-on ammeters require operators to connect the load to the three-phase power supply at close range and to constantly monitor current changes. This prolonged close contact with live parts poses a significant safety hazard and also delays communication with ground personnel.

[0008] Secondly, its applicability is limited. The high-voltage AC submarine cable monitoring system can only be installed at fixed locations. It is not suitable for flexible operation locations for overhead line operations, and the single-point information exchange equipment is not easy to carry.

[0009] Third, the monitoring methods are limited. Existing online monitoring devices have very limited means of monitoring the operation status of 10kV field distribution network live-line work. They only rely on some instruments and equipment to determine whether the operation status is normal, and there are currently no other monitoring methods.

[0010] Fourth, information exchange is lagging. In the existing technology, there is a delay in information exchange between current monitoring equipment and operators, making it impossible to achieve real-time synchronous early warning between the monitoring end and the terminal, and making it difficult to form an effective dual safety guarantee mechanism. Summary of the Invention

[0011] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide an overhead line ground-air current monitoring and interaction device to solve the problems of insufficient safety, limited applicability, single monitoring method and delayed information interaction in the prior art.

[0012] The specific technical solution of the present invention is as follows:

[0013] An interactive device for monitoring ground-to-air current of overhead lines, characterized in that it includes a monitoring end and a terminal;

[0014] The monitoring terminal includes a current sensor (1), a current sensor housing A (2), a current sensor housing B (3), a current display screen (4), a monitoring device housing A (5), a PCB control board (6), a monitoring interaction board (7), and a monitoring device housing B (8).

[0015] The current sensor (1) is installed in the opening groove of the current sensor housing A (2) and the current sensor housing B (3), and opens and closes through the shaft hole at the bottom of the housing as a rotating shaft; the current sensor housing is fixed to the monitoring device housing B (8) by a pin, and a torsion spring is installed at the rotating shaft of the monitoring device housing to provide closing torque so that the current sensor is tightly closed.

[0016] The PCB control board (6) is electrically connected to the current display screen (4) and the monitoring interaction board (7), and the signal line of the current sensor (1) is connected to the PCB control board (6); the PCB control board (6) integrates an IM1266 computing element and an ESP32 chip, which are used to calculate the current value, compare the threshold and issue an alarm signal;

[0017] The terminal includes a terminal housing A (9), a terminal housing B (10), a terminal display screen (11), a terminal control board (12), and a terminal interaction board (13); the terminal display screen (11) and the terminal interaction board (13) are respectively connected to the terminal control board (12); the monitoring end and the terminal establish a wireless data transmission link through the monitoring interaction board (7) and the terminal interaction board (13) to realize real-time synchronization of current data and early warning signals.

[0018] Preferably, the current sensor (1) adopts electromagnetic coil induction technology to perform non-contact current monitoring by sensing the induced current on the main line; the monitoring end is hung on the overhead line work point by an insulated short rod so that the workers do not need to come into close contact with the live body.

[0019] Preferably, both the monitoring end and the terminal are equipped with alarms; when the PCB control board (6) determines that the current value exceeds or falls below the preset threshold, the monitoring end and the terminal trigger alarms synchronously to achieve real-time synchronous early warning in both ground and air.

[0020] Preferably, the terminal is connected to multiple monitoring terminals simultaneously to enable independent setting of upper and lower current thresholds for each monitoring terminal; the monitoring terminal is equipped with a threshold adjustment button for setting the alarm trigger threshold for current monitoring.

[0021] Preferably, the two mating surfaces of the current sensor (1) are provided with high temperature resistant and insulating anti-slip silicone pads; the opening and closing points of the current sensor housing A (2) and the current sensor housing B (3) are provided with positioning buckles so that when the sensor is closed in place, the corresponding two positioning buckles will be locked.

[0022] Preferably, the PCB control board (6) is equipped with a zero-position calibration function. After powering on, it reads and stores the sensing value when the sensor is closed but not clamped to the circuit. The sensing value is then automatically subtracted during subsequent detection to achieve a zero error value.

[0023] Preferably, the coil of the current sensor (1) is wrapped with a copper foil shielding layer, and the copper foil shielding layer is grounded; the PCB control board (6) is provided with a filter capacitor, and the sensor signal line is a shielded line that runs close to the inner wall of the monitoring device housing.

[0024] Preferably, the bottom of the housing B (8) of the monitoring device is provided with an angle sensor for real-time detection of the line sway angle; the ESP32 chip of the PCB control board (6) calls the compensation algorithm according to the angle sensor signal to compensate and correct the detected current value.

[0025] Preferably, when the PCB control board (6) detects that the current value exceeds the preset threshold, it automatically locks and stores the abnormal current value and the time of the abnormality; the terminal display screen (11) is provided with an abnormality query button for viewing abnormal records; the abnormal records can be exported through the terminal interaction board (13).

[0026] Preferably, the PCB control board (6) adopts a low power consumption design. When the current value is stable within the preset threshold range, it automatically switches to the low power consumption mode. When an abnormal current is detected, it automatically switches back to the normal mode. The current display screen (4) and the terminal display screen (11) display the remaining power in real time. When the power is lower than the preset value, both ends issue a low power warning. The outer shell A (5) of the monitoring device is provided with a replaceable battery compartment.

[0027] Compared with the prior art, the present invention has the following significant advantages:

[0028] 1. Achieve real-time synchronous early warning in both ground and air, solving the problem of incomplete security protection caused by "delayed information exchange and one-way early warning" in existing technologies.

[0029] This invention employs a dual-end linkage design of "monitoring end-terminal". The monitoring end, through a PCB control board integrating an IM1266 computing element and an ESP32 chip, processes current monitoring data in real time. This data is then transmitted to the terminal via a monitoring interaction board, achieving real-time synchronization of monitoring data and early warning signals. Simultaneously, both the monitoring end and the terminal are equipped with alarms; when the monitoring data exceeds a preset threshold, both ends can trigger alarms synchronously. This technology overcomes the limitations of existing technologies where only a single terminal or monitoring end provides early warnings, and signal transmission is delayed. It allows ground and aerial workers to simultaneously obtain risk warning information, forming a dual safety protection system.

[0030] 2. Improve the stability and efficiency of data transmission and processing, and solve the problems of "high risk of data interaction interruption and low processing efficiency" in existing technologies.

[0031] This invention integrates the IM1266 computing element and the ESP32 chip onto a single PCB control board, achieving integrated processing of data acquisition, computation, and transmission, reducing data loss and latency during transmission between multiple components. Simultaneously, a dedicated monitoring and interaction board establishes a directional data link with the terminal, avoiding signal interference with other devices. Compared to existing technologies that employ distributed components for data processing and rely on highly versatile transmission links, this invention's integrated processing and directional transmission technology significantly improves the stability and efficiency of data interaction, ensuring reliable data transmission in high-voltage operating scenarios.

[0032] 3. Adapt to the insulation protection requirements of high-voltage live-line work, and solve the problem that "interactive components are not adapted to high-voltage scenarios, posing a risk of electric shock" in existing technologies.

[0033] The monitoring-end interaction components (PCB control board and monitoring interaction board) of this invention are all integrated into the monitoring device housing made of insulating material, and the monitoring device is physically isolated from the operator through an insulating short rod; the wireless transmission link between the terminal and the monitoring end does not require a physical wire connection, avoiding the risk of the line coming into contact with high-voltage live parts. Existing interaction components often do not consider high-voltage insulation protection or use wired transmission methods, which can easily lead to electric shock hazards in high-voltage live-line working scenarios. The insulation integration and wireless transmission technology of this invention enable the two-way interaction function to be safely adapted to 10kV distribution network overhead line live-line working scenarios, expanding the applicability of the technology.

[0034] 4. The dual-fixation structure and anti-slip design ensure stable contact between the current sensor and the overhead line, improving monitoring accuracy.

[0035] This invention features high-temperature resistant, insulating, and anti-slip silicone pads on both mating surfaces of the current sensor, and a positioning buckle at the opening of the current sensor housing, forming a dual fixing structure of "torsion spring torque + buckle positioning." This prevents the sensor from loosening and causing detection deviations due to the weakening of the torsion spring force after prolonged operation. Simultaneously, the PCB control board has a zero-point calibration function. Upon power-on, it automatically reads and stores the sensing value when the sensor is closed but not clamped to the circuit. During subsequent detections, the zero-error value is automatically subtracted, avoiding the influence of slight errors in the sensor itself on the detection results and significantly improving monitoring accuracy.

[0036] 5. Through electromagnetic shielding and filtering design, external electromagnetic interference is effectively suppressed, ensuring stable and accurate detection values.

[0037] This invention employs a copper foil shielding layer wrapped around the coil of the current sensor and grounded to block most of the external electromagnetic signals. A filter capacitor is installed on the PCB control board to filter out minute interference signals mixed in with the current signal. The sensor signal line uses shielded wire and runs close to the inner wall of the monitoring device housing, avoiding intersections with other lines. These technical measures effectively suppress electromagnetic signals from surrounding lines and electromagnetic interference from tools during 10kV overhead power line operations, ensuring stable and accurate detection values.

[0038] 6. By using angle sensors and compensation algorithms, detection deviations caused by line vibration are automatically corrected to ensure the accuracy of monitoring data.

[0039] This invention incorporates an angle sensor at the bottom of the monitoring device's housing to detect the angle of line sway in real time. The ESP32 chip on the PCB control board receives signals from the angle sensor in real time. When line sway is detected or the sensor angle changes, a preset compensation algorithm is automatically invoked to compensate and correct the currently detected current value. This technique ensures that even if the overhead line sways slightly in the wind, the detected current value remains consistent with the actual current in the line, without any deviation.

[0040] 7. It has the function of storing and tracing abnormal records, which facilitates subsequent troubleshooting and fault analysis.

[0041] When the detected current value exceeds a preset threshold, the PCB control board automatically locks and stores the abnormal current value and the time of occurrence. The terminal display screen has an abnormality query button, allowing operators to view all abnormal records. The abnormal records can be exported to a mobile phone via the terminal interaction board. This technology solves the problem of "abnormal values ​​cannot be retained or traced," facilitating subsequent data processing, fault reporting, and analysis of momentary line faults or other causes by operators.

[0042] 8. It adopts a low-power design and a replaceable battery to ensure continuous monitoring capability during long-term operation.

[0043] This invention optimizes the power supply circuit of the PCB control board, employing a low-power design. When the device detects that the current value is stable within a preset threshold range, it automatically switches to a low-power mode, reducing power consumption by 50%. When an abnormal current is detected, it automatically switches back to normal mode, ensuring that the device can be used continuously for more than 3 hours on a single charge. The current display screen and terminal display screen show the remaining power in real time, and both ends issue a low power warning when the power is lower than a preset value. The battery adopts a replaceable design, with a concealed battery compartment in the monitoring device casing, allowing operators to carry a spare battery for quick replacement. This technical approach avoids the safety hazards of monitoring interruption due to sudden power failure and the inability of operators to obtain abnormal current information in a timely manner. Attached Figure Description

[0044] Figure 1 This is an exploded view of the monitoring terminal of the present invention;

[0045] Figure 2 This is an exploded view of the terminal of the present invention. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0047] This invention provides an overhead line ground-air current monitoring and interactive device, suitable for live-line work on 10kV distribution network overhead lines. It enables real-time monitoring of overhead line current, threshold determination, two-way synchronous ground-air early warning, and remote interaction. The device adopts a dual-end linkage architecture: the monitoring end is connected to the overhead line work point for current acquisition and processing, while the terminal is held by ground personnel, enabling real-time synchronous data display and early warning information reception.

[0048] The overall structure of the device is as follows Figure 1 , 2 As shown, the overhead line ground-air current monitoring and interactive device of the present invention includes two main parts: a monitoring end and a terminal.

[0049] The monitoring end includes a current sensor (1), a current sensor housing A (2), a current sensor housing B (3), a current display screen (4), a monitoring device housing A (5), a PCB control board (6), a monitoring interaction board (7), and a monitoring device housing B (8).

[0050] The terminal includes terminal housing A (9), terminal housing B (10), terminal display screen (11), terminal control board (12), and terminal interaction board (13).

[0051] The monitoring end and the terminal establish a wireless data transmission link through the monitoring interaction board (7) and the terminal interaction board (13) to realize real-time synchronization of current data and early warning signals.

[0052] Specific embodiments of the monitoring end structure

[0053] Example 1: A current sensor assembly includes a current sensor (1), a current sensor housing A (2), and a current sensor housing B (3). The current sensor (1) employs electromagnetic coil induction technology to perform non-contact current monitoring by sensing the induced current on the main conductor. The current sensor (1) is installed in the opening grooves of the current sensor housing A (2) and the current sensor housing B (3). The housings are used to hold the current sensor (including current sensor housing A and current sensor housing B). The current sensor housing A and current sensor housing B are fixed by screws.

[0054] On each of the two mating surfaces of the current sensor (1), a small piece of high-temperature resistant, insulating, and non-slip silicone pad is attached. The silicone pad is 1-2mm thick and cut to the same size as the mating surface of the sensor. When the torsion spring is closed, the silicone pad can firmly press against the two current sensors. Even if the circuit shakes slightly or the device shifts due to wind, there will be no gaps in the sensors, thus avoiding missed detection of induced current or underestimation of the value due to poor contact.

[0055] At the opening and closing points of the current sensor housing A (2) and the current sensor housing B (3), there are two corresponding positioning buckles. When the torsion spring causes the two current sensors to close in place, the corresponding positioning buckles will lock into each other, forming a double fixing structure of "torsion spring torque + buckle positioning" to prevent the torsion spring force from decaying after long-term operation, which would cause the sensor to loosen and cause detection deviation.

[0056] Example 2 Current sensor housing installation structure: The assembled current sensor housing is installed on the monitoring device housing B (8). The rotating shaft hole at the bottom of the current sensor housing is fixed with a pin so that the two halves of the current sensor housing can only open and close along this shaft hole.

[0057] The torsion spring is installed on the rotating shaft of the monitoring device housing. The two legs of the torsion spring are inserted into the bracket ears on both sides of the rotating shaft of the current monitoring housing to transmit the closing torque and make the current sensor close tightly.

[0058] Example 3: PCB control board assembly, including PCB control board (6), current display screen (4) and monitoring interaction board (7). PCB control board (6) integrates IM1266 computing element and ESP32 chip. IM1266 computing element is used to calculate current value, and ESP32 chip is used for data comparison, threshold determination and signal control.

[0059] The current display screen (4) and the monitoring interaction board (7) are connected to the PCB control board (6) for displaying current data signals and interacting with terminal information.

[0060] The signal line of the current sensor (1) is connected to the PCB control board (6). The PCB control board (6) is installed on the housing A (5) of the monitoring device, and the current threshold is adjusted and set by the button. The housing A (5) of the monitoring device is locked with the housing B (8) of the monitoring device to fix the control board.

[0061] After powering on, the alarm trigger settings for current monitoring exceeding or falling below the threshold can be adjusted using the three control threshold adjustment buttons.

[0062] Example 4: Electromagnetic shielding and filtering design. To suppress electromagnetic signals from surrounding lines and electromagnetic interference from work tools during 10kV overhead distribution line operations, the following technical means are adopted:

[0063] A thin copper foil shielding layer is wrapped around the coil of the current sensor (1). One end of the copper foil shielding layer is grounded and connected to the grounding terminal of the monitoring device housing B (8). The copper foil shielding layer can block most of the messy electromagnetic signals from the outside, prevent interference signals from entering the coil, and ensure that the coil only senses the current of the overhead line itself.

[0064] Add a small filter capacitor to the PCB control board (6). The current signal transmitted from the sensor is first filtered by the capacitor to remove the tiny interference signals mixed in, and then transmitted to the IM1266 component for calculation, so as to avoid the interference signal causing the calculated current value to be wrong.

[0065] The sensor's signal cable is a shielded cable, and the cable should be as short as possible. When routing the cable, it should be close to the inner wall of the monitoring device housing and should not cross with other lines to further reduce signal interference and ensure stable and accurate detection values.

[0066] Compared with the prior art, the present invention has the following significant advantages:

[0067] 1. Achieve real-time synchronous early warning in both ground and air, solving the problem of incomplete security protection caused by "delayed information exchange and one-way early warning" in existing technologies.

[0068] This invention employs a dual-end linkage design of "monitoring end-terminal". The monitoring end, through a PCB control board integrating an IM1266 computing element and an ESP32 chip, processes current monitoring data in real time. This data is then transmitted to the terminal via a monitoring interaction board, achieving real-time synchronization of monitoring data and early warning signals. Simultaneously, both the monitoring end and the terminal are equipped with alarms; when the monitoring data exceeds a preset threshold, both ends can trigger alarms synchronously. This technology overcomes the limitations of existing technologies where only a single terminal or monitoring end provides early warnings, and signal transmission is delayed. It allows ground and aerial workers to simultaneously obtain risk warning information, forming a dual safety protection system.

[0069] 2. Improve the stability and efficiency of data transmission and processing, and solve the problems of "high risk of data interaction interruption and low processing efficiency" in existing technologies.

[0070] This invention integrates the IM1266 computing element and the ESP32 chip onto a single PCB control board, achieving integrated processing of data acquisition, computation, and transmission, reducing data loss and latency during transmission between multiple components. Simultaneously, a dedicated monitoring and interaction board establishes a directional data link with the terminal, avoiding signal interference with other devices. Compared to existing technologies that employ distributed components for data processing and rely on highly versatile transmission links, this invention's integrated processing and directional transmission technology significantly improves the stability and efficiency of data interaction, ensuring reliable data transmission in high-voltage operating scenarios.

[0071] 3. Adapt to the insulation protection requirements of high-voltage live-line work, and solve the problem that "interactive components are not adapted to high-voltage scenarios, posing a risk of electric shock" in existing technologies.

[0072] The monitoring-end interaction components (PCB control board and monitoring interaction board) of this invention are all integrated into the monitoring device housing made of insulating material, and the monitoring device is physically isolated from the operator through an insulating short rod; the wireless transmission link between the terminal and the monitoring end does not require a physical wire connection, avoiding the risk of the line coming into contact with high-voltage live parts. Existing interaction components often do not consider high-voltage insulation protection or use wired transmission methods, which can easily lead to electric shock hazards in high-voltage live-line working scenarios. The insulation integration and wireless transmission technology of this invention enable the two-way interaction function to be safely adapted to 10kV distribution network overhead line live-line working scenarios, expanding the applicability of the technology.

[0073] 4. The dual-fixation structure and anti-slip design ensure stable contact between the current sensor and the overhead line, improving monitoring accuracy.

[0074] This invention features high-temperature resistant, insulating, and anti-slip silicone pads on both mating surfaces of the current sensor, and a positioning buckle at the opening of the current sensor housing, forming a dual fixing structure of "torsion spring torque + buckle positioning." This prevents the sensor from loosening and causing detection deviations due to the weakening of the torsion spring force after prolonged operation. Simultaneously, the PCB control board has a zero-point calibration function. Upon power-on, it automatically reads and stores the sensing value when the sensor is closed but not clamped to the circuit. During subsequent detections, the zero-error value is automatically subtracted, avoiding the influence of slight errors in the sensor itself on the detection results and significantly improving monitoring accuracy.

[0075] 5. Through electromagnetic shielding and filtering design, external electromagnetic interference is effectively suppressed, ensuring stable and accurate detection values.

[0076] This invention employs a copper foil shielding layer wrapped around the coil of the current sensor and grounded to block most of the external electromagnetic signals. A filter capacitor is installed on the PCB control board to filter out minute interference signals mixed in with the current signal. The sensor signal line uses shielded wire and runs close to the inner wall of the monitoring device housing, avoiding intersections with other lines. These technical measures effectively suppress electromagnetic signals from surrounding lines and electromagnetic interference from tools during 10kV overhead power line operations, ensuring stable and accurate detection values.

[0077] 6. By using angle sensors and compensation algorithms, detection deviations caused by line vibration are automatically corrected to ensure the accuracy of monitoring data.

[0078] This invention incorporates an angle sensor at the bottom of the monitoring device's housing to detect the angle of line sway in real time. The ESP32 chip on the PCB control board receives signals from the angle sensor in real time. When line sway is detected or the sensor angle changes, a preset compensation algorithm is automatically invoked to compensate and correct the currently detected current value. This technique ensures that even if the overhead line sways slightly in the wind, the detected current value remains consistent with the actual current in the line, without any deviation.

[0079] 7. It has the function of storing and tracing abnormal records, which facilitates subsequent troubleshooting and fault analysis.

[0080] When the detected current value exceeds a preset threshold, the PCB control board automatically locks and stores the abnormal current value and the time of occurrence. The terminal display screen has an abnormality query button, allowing operators to view all abnormal records. The abnormal records can be exported to a mobile phone via the terminal interaction board. This technology solves the problem of "abnormal values ​​cannot be retained or traced," facilitating subsequent data processing, fault reporting, and analysis of momentary line faults or other causes by operators.

[0081] 8. It adopts a low-power design and a replaceable battery to ensure continuous monitoring capability during long-term operation.

[0082] This invention optimizes the power supply circuit of the PCB control board, employing a low-power design. When the device detects that the current value is stable within a preset threshold range, it automatically switches to a low-power mode, reducing power consumption by 50%. When an abnormal current is detected, it automatically switches back to normal mode, ensuring that the device can be used continuously for more than 3 hours on a single charge. The current display screen and terminal display screen show the remaining power in real time, and both ends issue a low power warning when the power is lower than a preset value. The battery adopts a replaceable design, with a concealed battery compartment in the monitoring device casing, allowing operators to carry a spare battery for quick replacement. This technical approach avoids the safety hazards of monitoring interruption due to sudden power failure and the inability of operators to obtain abnormal current information in a timely manner.

[0083] The above description is only a preferred embodiment of the present invention. For those skilled in the art, designing different forms of interactive devices based on the teachings of the present invention does not require creative labor. All equivalent changes, modifications, substitutions and variations made in accordance with the scope of the patent application of the present invention without departing from the principles and spirit of the present invention shall be covered by the present invention.

Claims

1. An interactive device for monitoring overhead line ground-to-air current, characterized in that, Including monitoring terminals and endpoints; The monitoring terminal includes a current sensor (1), a current sensor housing A (2), a current sensor housing B (3), a current display screen (4), a monitoring device housing A (5), a PCB control board (6), a monitoring interaction board (7), and a monitoring device housing B (8). The current sensor (1) is installed in the opening groove of the current sensor housing A (2) and the current sensor housing B (3), and opens and closes through the shaft hole at the bottom of the housing as a rotating shaft; the current sensor housing is fixed to the monitoring device housing B (8) by a pin, and a torsion spring is installed at the rotating shaft of the monitoring device housing to provide closing torque so that the current sensor is tightly closed. The PCB control board (6) is electrically connected to the current display screen (4) and the monitoring interaction board (7), and the signal line of the current sensor (1) is connected to the PCB control board (6); the PCB control board (6) integrates an IM1266 computing element and an ESP32 chip, which are used to calculate the current value, compare the threshold and issue an alarm signal; The terminal includes a terminal housing A (9), a terminal housing B (10), a terminal display screen (11), a terminal control board (12), and a terminal interaction board (13); the terminal display screen (11) and the terminal interaction board (13) are respectively connected to the terminal control board (12); the monitoring end and the terminal establish a wireless data transmission link through the monitoring interaction board (7) and the terminal interaction board (13) to realize real-time synchronization of current data and early warning signals.

2. The overhead line ground-to-air current monitoring and interactive device according to claim 1, characterized in that, The current sensor (1) adopts electromagnetic coil induction technology to perform non-contact current monitoring by sensing the induced current on the main line; the monitoring end is hung on the overhead line work point by an insulated short rod so that the workers do not need to come into close contact with the live body.

3. The overhead line ground-to-air current monitoring and interactive device according to claim 1, characterized in that, Both the monitoring end and the terminal are equipped with alarms; when the PCB control board (6) determines that the current value exceeds or falls below the preset threshold, the monitoring end and the terminal trigger alarms synchronously to achieve real-time synchronous early warning in both ground and air.

4. The overhead line ground-to-air current monitoring and interactive device according to claim 1, characterized in that, The terminal can connect to multiple monitoring terminals simultaneously to enable independent setting of upper and lower current thresholds for each monitoring terminal; the monitoring terminal is equipped with a threshold adjustment button for setting the alarm trigger threshold for current monitoring.

5. The overhead line ground-to-air current monitoring and interactive device according to claim 1, characterized in that, The two mating surfaces of the current sensor (1) are provided with high temperature resistant and insulating anti-slip silicone pads; the opening and closing points of the current sensor housing A (2) and the current sensor housing B (3) are provided with positioning buckles, so that when the sensor is closed in place, the corresponding two positioning buckles will be locked.

6. The overhead line ground-to-air current monitoring and interactive device according to claim 1, characterized in that, The PCB control board (6) is equipped with a zero-position calibration function. After powering on, it reads and stores the sensing value when the sensor is closed but not clamped to the circuit. The sensing value is automatically subtracted during subsequent detection to achieve a zero error value.

7. The overhead line ground-to-air current monitoring and interactive device according to claim 1, characterized in that, The coil of the current sensor (1) is wrapped with a copper foil shielding layer, which is grounded; the PCB control board (6) is equipped with a filter capacitor, and the sensor signal line is a shielded line that runs close to the inner wall of the monitoring device housing.

8. The overhead line ground-to-air current monitoring and interactive device according to claim 1, characterized in that, An angle sensor is provided at the bottom of the housing B (8) of the monitoring device to detect the line sway angle in real time; the ESP32 chip of the PCB control board (6) calls the compensation algorithm according to the angle sensor signal to compensate and correct the detected current value.

9. The overhead line ground-to-air current monitoring and interactive device according to claim 1, characterized in that, When the PCB control board (6) detects that the current value exceeds the preset threshold, it automatically locks and stores the abnormal current value and the time of the abnormality; the terminal display screen (11) is equipped with an abnormality query button for viewing abnormal records; the abnormal records can be exported through the terminal interaction board (13).

10. The overhead line ground-to-air current monitoring and interactive device according to claim 1, characterized in that, The PCB control board (6) adopts a low power consumption design. When the current value is stable within the preset threshold range, it automatically switches to the low power consumption mode. When an abnormal current is detected, it automatically switches back to the normal mode. The current display screen (4) and the terminal display screen (11) display the remaining power in real time. When the power is lower than the preset value, both ends issue a low power warning. The outer shell A (5) of the monitoring device is equipped with a replaceable battery compartment.

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